DNV OSS 305 (2004) Rules for Certification & Verification of Diving System

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OFFSHORE SERVICE SPECIFICATION DNV-OSS-305

RULES FOR CERTIFICATION AND VERIFICATION OF DIVING SYSTEMS JANUARY 2004

DET NORSKE VERITAS

FOREWORD DET NORSKE VERITAS (DNV) is an autonomous and independent foundation with the objectives of safeguarding life, property and the environment, at sea and onshore. DNV undertakes classification, certification, and other verification and consultancy services relating to quality of ships, offshore units and installations, and onshore industries worldwide, and carries out research in relation to these functions. DNV Offshore Codes consist of a three level hierarchy of documents: — Offshore Service Specifications. Provide principles and procedures of DNV classification, certification, verification and consultancy services. — Offshore Standards. Provide technical provisions and acceptance criteria for general use by the offshore industry as well as the technical basis for DNV offshore services. — Recommended Practices. Provide proven technology and sound engineering practice as well as guidance for the higher level Offshore Service Specifications and Offshore Standards. DNV Offshore Codes are offered within the following areas: A) Qualification, Quality and Safety Methodology B) Materials Technology C) Structures D) Systems E) Special Facilities F) Pipelines and Risers G) Asset Operation H) Marine Operations

Amendments and Corrections This document is valid until superseded by a new revision. Minor amendments and corrections will be published in a separate document on the DNV web-site; normally updated twice per year (April and October). To access the web-site, select short-cut options "Technology Services" and "Offshore Rules and Standards" at http://www.dnv.com/ The electronic web-versions of the DNV Offshore Codes will be regularly updated to include these amendments and corrections.

Comments may be sent by e-mail to [email protected] For subscription orders or information about subscription terms, please use [email protected] Comprehensive information about DNV services, research and publications can be found at http://www.dnv.com, or can be obtained from DNV, Veritasveien 1, N-1322 Høvik, Norway; Tel +47 67 57 99 00, Fax +47 67 57 99 11.

© Det Norske Veritas. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, including photocopying and recording, without the prior written consent of Det Norske Veritas. Computer Typesetting (FM+SGML) by Det Norske Veritas. Printed in Norway.

If any person suffers loss or damage which is proved to have been caused by any negligent act or omission of Det Norske Veritas, then Det Norske Veritas shall pay compensation to such person for his proved direct loss or damage. However, the compensation shall not exceed an amount equal to ten times the fee charged for the service in question, provided that the maximum compensation shall never exceed USD 2 million. In this provision "Det Norske Veritas" shall mean the Foundation Det Norske Veritas as well as all its subsidiaries, directors, officers, employees, agents and any other acting on behalf of Det Norske Veritas.

Offshore Service Specification DNV-OSS-305, January 2004 Introduction – Page 3

INTRODUCTION This Service Specification was approved by the Director of Technology in January 2004. This Service Specification enters into force 1 July 2004. The Rules for Classification of Ships Pt.6 Ch.1 Sec.4 “Diving Systems”, remain extant until 1 July 2004, after which they will be deleted. The rules for diving systems are contained in two books: a) The Rules for Classification of Ships Pt.6 Ch.1 Sec.4 (obsolescent) b) The Rules for Certification of Diving Systems – 1988 (obsolescent) The information contained in these two books has been rearranged and included in the following Offshore Codes: DNV-OSS-305– Rules for Certification and Verification of Diving Systems DNV-OS-E402– Offshore Standard for Diving Systems

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Offshore Service Specification DNV-OSS-305, January 2004 Contents – Page 5

CONTENTS Sec. 1

Introduction........................................................... 7

A. Introduction ............................................................................ 7 A A A A A

100 200 300 400 500

General.............................................................................. 7 Objectives ......................................................................... 7 Application........................................................................ 7 Scope of application for verification ................................ 7 Organisation of DNV-OSS-305........................................ 7

B. Definitions .............................................................................. 7 B 100 B 200 B 300

General.............................................................................. 7 Auxiliary verb forms......................................................... 7 Definitions ........................................................................ 7

C. Normative References ............................................................ 8 C C C C C C C

100 200 300 400 500 600 700

Offshore Service Specifications........................................ 8 Offshore Standards ........................................................... 8 Recommended practices ................................................... 9 Rules ................................................................................. 9 Certification notes and Classification notes...................... 9 Guidelines ......................................................................... 9 Other normative references............................................... 9

D. Informative References......................................................... 10 D 100

General............................................................................ 10

E. Abbreviations and Symbols (Guidance)............................... 10

H H H H

400 500 600 700

Classification Certificate (Class Notation) ..................... 17 Verification Comments .................................................. 18 Audit Report ................................................................... 18 Survey Reports and Visit Reports................................... 18

I. Use of Quality Management Systems...................................18 I I I I

100 200 300 400

General............................................................................ 18 Quality Plans................................................................... 18 Inspection and Test Plans ............................................... 19 Review of Quality Management Programme ................. 19

J. Maintenance of Class Notation.............................................19 J J J J J J

100 200 300 400 500 600

General............................................................................ 19 Validity of Certification Documents .............................. 19 Assumptions ................................................................... 19 Verification During Operation ....................................... 20 Obligations...................................................................... 20 Non-conformance report – Condition of Class............... 20

App. A Instances where DNV-OSS-305 (and DNV-OS-E402) Require Certification ......................................... 21 A. General..................................................................................21 A 100

Introduction..................................................................... 21

B. Design and Manufacturers....................................................21

E 100 E 200

Abbreviations.................................................................. 10 Symbols .......................................................................... 10

Sec. 2

Service Overview and requirements ................. 11

D. Installation ...........................................................................23

A. General.................................................................................. 11

E. Operations.............................................................................23

A 100

Objectives ....................................................................... 11

C. Materials and Components ...................................................21

Introduction .................................................................... 11 Justifications for certification or classification............... 11

App. B List of Instances where DNV-OSS-305 (AND DNV-OS-E402) Require attendance by DNV .............................. 24

C. Overview on Verification, Certification and Classification . 11

A. General..................................................................................24

B. Background (Informative) .................................................... 11 B 100 B 200 C C C C C C C

100 200 300 400 500 600 700

General............................................................................ 11 Purpose of verification.................................................... 11 Verification as a complementary activity ....................... 11 Project management........................................................ 11 Certification to DNV-OS-E402 ...................................... 12 Certification to other standards....................................... 12 Classification .................................................................. 12

A 100

Introduction..................................................................... 24

B. Design ...................................................................................24 C. Materials and Components ...................................................25 D. Installation ...........................................................................26

D. Service Process ..................................................................... 12

E. Operations.............................................................................26

D D D D D D

General principles ........................................................... 12 Scopes of work................................................................ 12 Overall safety objective .................................................. 12 Assessment of risk .......................................................... 12 Technical innovation and contractor experience ............ 12 Quality management systems ......................................... 13

App. C List of sources to assist in obtaining reference documents ............................................................ 27

E. Information Flow.................................................................. 13

App. D Examples of Certification Documents .............. 28

E 100 E 200 E 300

Communication lines ...................................................... 13 Obligations...................................................................... 13 Notification ..................................................................... 14

A. General..................................................................................28

F. Pre-certification .................................................................... 14

B. Certification Documents.......................................................29

100 200 300 400 500 600

F 100

Verification during conceptual design........................... 14

G. Certification and Classification ............................................ 14 G G G G G G G

100 200 300 400 500 600 700

General............................................................................ 14 Certification .................................................................... 14 Classification .................................................................. 14 Overall Project Management .......................................... 15 Verification during Design ............................................. 15 Verification during Construction.................................... 16 Testing ............................................................................ 16

A. General..................................................................................27 A 100

A 100

Purpose of Certification Documents............................... 16 Certification Documents Provided ................................. 17 Validity of Certification Documents............................... 17

Introduction..................................................................... 28

B 100 B B B B B B B

H. Certification Documents....................................................... 16 H 100 H 200 H 300

General Principles........................................................... 27

B B

Request for Certification/Classification of Diving Systems and parts of Diving Systems (Form no. 14.30a) ........................................................... 29 200 Classification Certificate (Form no. cship)..................... 31 300 Certificate of Interim Class (Form 40.010a)................... 34 400 Installation Report Diving System (Form no. 51.71a) ... 36 500 Certificate for Diving System (Form no. 14.39a)........... 39 600 Certificate for Transferable Diving System (Form no. 14.33a) ........................................................... 40 700 Data Sheet for Diving System (Form 20.201a) .............. 41 800 Certificate for Chambers for Diving Systems (Form no. 14.31a) ........................................................... 61 900 Certificate for Diving Bells (Form no. 14.32a) .............. 63 1000 Examination of Lifting Appliances of Lifting Gear (Form no. CG11) ............................................................ 64

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Offshore Service Specification DNV-OSS-305, January 2004 Page 6 – Contents

B 1100 Survey Report (Form no. 40.9a) .....................................66 B 1200 Plan Approval letter (Example) ......................................67 B 1300 Diving System Safety Certificate (Form no. DSV-SERT) ...................................................68

C 200

App. E Generic Description of Project Sub-phases...... 71

App. F Selection of Safety Objective............................. 72

A. General.................................................................................. 71

A. General..................................................................................72

A 100

A 100

Introduction .....................................................................71

Detail design ...................................................................71

D. Other Phases .........................................................................71 D 100

General ............................................................................71

General Principles ...........................................................72

B. Initial Studies........................................................................ 71

B. Trigger Questions ................................................................. 72

B 100 B 200

B B B B B

Feasibility Study .............................................................71 Concept Study .................................................................71

C. Design................................................................................... 71 C 100

Basic Design ...................................................................71

100 200 300 400 500

Overall Safety Objective.................................................72 Assessment of risk ..........................................................72 Technical Innovation.......................................................72 Contractors’ Experience..................................................72 Quality Management Systems ........................................72

DET NORSKE VERITAS

Offshore Service Specification DNV-OSS-305, January 2004 Sec.1 – Page 7

SECTION 1 INTRODUCTION A. Introduction A 100 General 101 This Offshore Service Specification (OSS) gives criteria for and guidance on certification of complete diving systems, and verification of the integrity of parts of diving systems. 102 Controlling documents relating to offshore systems consist of a three-level hierarchy with these main features: a) Principles and procedures related to DNV’s certification and verification services are separate from technical requirements and are presented in DNV Offshore Service Specifications. Offshore Service Specifications present the scope and extent of DNV’s services. b) Technical requirements are issued as self-contained DNV Offshore Standards. Offshore Standards are issued as neutral technical standards to enable their use by national authorities, as international codes and as company or project specifications without reference to DNV’s services. c) Associated product documents are issued as DNV Recommended Practices. The Recommended Practices give DNV’s interpretation of safe engineering practice for general use by industry. Guidance note: Product documents issued under previous document structures may be called “Classification Notes” or “Guidelines”. The latest revision of all DNV documents may be found in the publications list in the DNV web site www.dnv.com. ---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

specified conditions. Other aspects, such as its fitness for purpose, with respect to specified diving operations, may be included in DNV’s scope of work, if desired by the client. A 400 Scope of application for verification 401 This OSS may be adopted for the verification of parts of a diving system. The principles may also be used in communications about the extent and scope of verification activities that are not part of a scheme for certification. A 500 Organisation of DNV-OSS-305 501 This document consists of two sections and six appendices: — Sec.1 gives the general scope of the document, informative background information, definitions and references. — Sec.2 describes the certification process and the activities for each of the project phases. Furthermore, it describes the documents issued during and as a result of the certification process. The use of quality management systems is addressed here too. — Appendix A lists the instances where DNV-OS-E402 and DNV-OSS-305 requires certification. — Appendix B lists the instances where DNV-OS-E402 and DNV-OSS-305 requires attendance by DNV. — Appendix C is a list of sources to assist in obtaining reference documents. — Appendix D gives examples of certification documents. — Appendix E outlines generic project sub phases. — Appendix F is a series of key questions when selecting safety objectives.

A 200 Objectives 201 The objectives of this document are to:

B. Definitions

a) describe DNV’s certification and verification services for diving systems b) provide guidance for owners and other parties for the selection of the level of involvement of those carrying out the certification and verification activities c) provide a common communication platform for describing the extent of verification activities. A 300 Application 301 This OSS applies to verification, certification and classification during the design, construction and operation of diving systems. Classification is described in more detail in DSVOSS-101 “Rules for Classification of Offshore Drilling and Support Units” and in DNV Rules for Ships. 302 This OSS describes the necessary activities to be carried out to obtain initial DNV diving system component certificates and DSV class notation. In addition the general requirements outlined in DNV-OSS-101 “Rules for Classification of Offshore Drilling and Support Units” apply. 303 Statutory certification of diving systems to the requirements of national authorities is not included specifically in the scope of application of this OSS. Such certification shall be governed by the regulations of the appointing authority. However, if these authorities do not give detailed procedures, this OSS will be used by DNV as a guideline for its work when appointed. 304 The primary scope of the certification work is the verification of the components and the integrity of the diving system, and or its capacity to support diving operations under the

B 100 General 101 The definitions in DNV-OS-E402 Sec.1 also apply to this OSS. B 200 Auxiliary verb forms 201 The terms will, can and may are used when describing DNV’s actions or activities, and the terms shall, should and may are used when referring to other parties than DNV. 202 Shall: Indicates requirements strictly to be followed in order to conform with this OSS and from which deviation is normally not permitted. However, deviations may be permitted in the case of technical alternatives as outlined in DNV-OSE402 Sec.1 A304. 203 Should: Indicates that among several possibilities, one is recommended as particularly suitable, without mentioning or excluding others, or that a certain course of action is preferred but not necessarily required. Other possibilities may be applied subject to agreement. 204 Will: Indicates a mandatory action or activity to be undertaken by DNV. (See “shall” for other parties.) 205 Can: Indicates an action or activity that DNV not necessarily does unless specifically requested by the Client. (See “should” for other parties.) 206 May: Verbal form used to indicate a course of action permissible within the limits of the OSS. B 300 Definitions 301 Certificate [of Conformity]: A document signed by a

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Offshore Service Specification DNV-OSS-305, January 2004 Page 8 – Sec.1

qualified party affirming that, at the time of assessment, the product or service met the stated requirements (BS 4778: Part 2). Guidance note: For this OSS, the 'document' is a DNV certificate or a class notation, and it is signed by DNV. For this OSS, a 'Certificate' is a short document (often a single page) stating compliance with specified requirements. The results from associated verification shall be contained in a separate (single or multiple volume) report or letter. ---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

302 Certification: Used in this document to mean all the verification activities associated with a process leading up to the issue of a Certificate. Guidance note: In this OSS when Certification is used it designates the overall scope of work or multiple activities for the issue of a Certificate, whilst Verification is also used for single activities associated with the work. This in essence means that Certification is Verification for which the deliverable includes the issue of a Certificate. Other (related) definitions are: BS 4778: Part 2: Certification: The authoritative act of documenting compliance with requirements. EN 45011: Certification of Conformity: Action by a third party, demonstrating that adequate confidence is provided that a duly identified product, process or service is in conformity with a specific standard or other normative document. ISO 8402: 1994: Verification: Confirmation by examination and provision of objective evidence that specified requirements have been fulfilled.

310 Manufacture (DNV-OS-E402): Making of articles or materials, sometimes in larger volumes. In relation to diving systems, refers to activities for the production of pressure vessels, distribution panels and other components, performed under contracts from one or more contractors. 311 Operations (phase): The phase when the diving system is being used for the purpose for which it was designed. 312 Risk (DNV-OS-E402): The qualitative or quantitative likelihood of an accident or unplanned event occurring, considered in conjunction with the potential consequences of such a failure. In quantitative terms, risk is the quantified probability of a defined failure mode times its quantified consequence. 313 Risk reduction measures: Those measures taken to reduce the risks to the operation of the diving system and to the health and safety of personnel associated with it or in its vicinity by: a) Reduction in the probability of failure. b) Mitigation of the consequences of failure. Guidance note: The usual order of preference of risk reduction measures is: a)

inherent safety

b)

prevention

c)

detection

d)

control

e)

mitigation

f)

emergency response ---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

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303 Client: DNV’s contractual partner. It may be the purchaser, the owner or the contractor.

314 Safety objectives: The safety goals for the construction, operation and decommissioning of the diving system including acceptance criteria for the level of risk acceptable to the owner.

304 Construction phase (DNV-OS-E402): All phases during construction, including fabrication, installation, testing and commissioning, up until the installation or system is safe and operable for intended use. In relation to diving systems, this includes procurements, manufacture assembly, rectification, installation, testing, commissioning and repair.

315 Statement of compliance: A statement or report signed by a qualified party affirming that, at the time of assessment, the defined phase, or collection of activities, met the requirements stated by the owner.

305 Design (DNV-OS-E402): All related engineering to design of the diving system. 306 Design phase: An initial phase that takes a systematic approach to the production of specifications, drawings and other documents to ensure that the diving system meets specified requirements (including design reviews to ensure that design output is verified against design input requirements). See ISO 9001.

316 Verification (DNV-OS-E402): An examination to confirm that an activity, a product or a service is in accordance with specified requirements. Guidance note: The examination shall be based on information, which can be proved true, based on facts obtained through observation, measurement, test or other means. See also Certification. ---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

307 Hazard: A deviation (departure from the design and operating intention) which could cause damage, injury or other form of loss (Chemical Industries Association HAZOP Guide). 308 HAZOP (HAZard and OPerability study): The application of a formal systematic critical examination to the process and engineering intentions of new or existing facilities to assess the hazard potential of inadvertent operation or malfunction of individual items of equipment and their consequential effects on the facility as a whole (Chemical Industries Association HAZOP Guide). 309 Installation (activity) (DNV-OS-E402): The operations related to installing the equipment, diving system or support structure, e.g. mounting chambers and handling systems etc., including final testing and preparation for operation.

C. Normative References C 100

Offshore Service Specifications

101 The latest revision of the following documents apply: Table C1 Offshore Service Specifications Reference Title DNV-OSS-101 Rules for Classification of Offshore Drilling and Support Units

C 200

Offshore Standards

201 The latest revision of the following documents apply:

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Offshore Service Specification DNV-OSS-305, January 2004 Sec.1 – Page 9

Table C2 Offshore Standards Reference Title DNV-OS-A101 Safety Principles and Arrangements DNV-OS-D201 Electrical Systems and Equipment DNV-OS-D202 Instrumentation and Telecommunication systems DNV-OS-D301 Fire Protection DNV-OS-E402 Diving Systems

EN 738-1, -2 and -3: 1997/1998 EN-1964-1:2000 EN 1968 :2002 EN 10204 EN ISO 11120:1999

C 300 Recommended practices 301 The latest revision of the following documents apply: EN 13445 EN 45011

Table C3 Recommended practices Reference Title DNV-RP-A201 Standard Documentation Types

C 400 Rules 401 The latest revision of the following documents apply: Table C4 Rules Title DNV Rules for Classification of Ships DNV Rules for Lifting Appliances

C 500 Certification notes and Classification notes The latest revision of the following documents apply: (Empty) C 600 Guidelines The latest revision of the following documents apply: (Empty) C 700 Other normative references 701 The latest revision of the following documents apply: Table C5 Other normative references Reference Title ASME VIII Div.1 Boiler and Pressure Vessel Code ASME ASME PVHO-1-1997 Safety Standard for Pressure Vessels for edition (or latest) Human Occupancy ASME PVHO-2-2002 Safety Standard for Pressure Vessels for edition (or latest) Human Occupancy in Service Guidelines for PVHO Acrylic Windows. ASTM G93-96 Standard Practice for Cleaning Methods and Cleanliness Levels for Materials and Equipment Used in Oxygen-Enriched Environments API Codes for hoses API 17E Specification for Subsea Production Control Umbilicals BS 4778 Quality Vocabulary, Part 2 Quality Concepts and Related Definitions, 1991, British Standards Institute, London. BS 5355 Specification for filling ratios and developed pressures for liquefiable and permanent gases.

EN 1708-1:1999 IMO Resolution A.831(19) IMO Resolution A.692(17) IMO MSC/Circ.645 of 6 June 1994 IMO Resolution A.809(19) IMO res. MSC.61(67) IMO resolution A.468 (XII) IEC No.79-10 ISO 6385-1981 ISO 9000 ISO 10013 ISO 10 380, BS6501 ISO 10474 ISO 13628-5

PD5500:2000 SAE J 517, DIN EN 853, 856, 857

Pressure regulators for use with medical gases Transportable gas cylinders (part 1:1999, part 2:2001 or part 3:2000) Periodic Inspection and testing of Seamless gas cylinders Metallic Products - Types of inspection documents./ ISO 10474:1991 Steel and steel products -- Inspection documents Gas cylinders - Refillable seamless steel tubes for compressed gas transport, of water capacity between 150 l and 3000 l - Design construction and testing (ISO 11120:1999): Unfired pressure vessels General Criteria for Certification Bodies Operating Product Certification, 1998, European Committee for Standardization, Brussels. Welding - Basic weld joint details in steel Code of Safety for Diving Systems, 1995, Guidelines and Specifications for Hyperbaric Evacuation Systems, 1991. Guidelines for Vessels with dynamic positioning systems In reference to SOLAS Regulation III/6.2.1 and III/6.2.2. (FTP Code) Code on noise levels onboard ships. International Electro technical Commission's Publication No.79-10, and IMO (MODU) Code chapter 6, Ergonomic Principles in the Design of Work Systems guidance on the selection and use of quality systems, and guidance on developing quality manuals. Flexible metallic hoses Steel and Steel Products - Inspection Documents /EN 10204 Metallic Products - Types of Inspection Documents “Petroleum and natural gas industries – Design and operation of subsea production systems – Part 5: Subsea control umbilicals” Specification for Unfired Fusion Welded Pressure Vessels Rubber Hoses and Hose Assemblies

Guidance note: The latest revision of the DNV documents may be found in the publication list at the DNV website www.dnv.com. For other sources see DNV OSS-305 appendix C.

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Offshore Service Specification DNV-OSS-305, January 2004 Page 10 – Sec.1

D. Informative References D 100

General

Table D1 Informative references Reference Title A Guide to Hazard and Operability Studies, 1979, Chemical Industries Association Limited, London. DNV Rules for Certification of Diving Systems, 1988 NORSOK Standard Manned Underwater Operations U-100 EN 849:1996 Transportable Gas Cylinders - Cylinder Valves - Specification and Type Testing EN ISO 11114-3:1997 Transportable Gas Cylinders - Compatibility of Cylinder and Valve Materials with Gas Contents - Part 3: Autogenous Ignition Test in Oxygen Atmosphere EN ISO 2503:1998 Gas Welding Equipment - Pressure Regulators for Gas Cylinders used in Welding, Cutting and Allied Processes up to 300 bar ILO Convention 133, Accommodation of crews 1970 (NFPA) Codes National Fire Protection Agency SOLAS 1974 (International Convention for the Safety of Life at Sea).

E. Abbreviations and Symbols (Guidance) E 100 API ASME ASTM AUT BS* C-Mn CE CRA DNV DP EBW FMEA HAZ HAZOP HFW HPIC IM ISO KV LBW MPQT MPS MSA NACE NDE NDT NPD P Q QA QC QP

QRA ROV UTS WPS YS

Quantitative Risk Analysis Remotely Operated Vehicle Ultimate Tensile Strength Welding Procedure Specification Yield Stress

E 200 Symbols 201 Latin characters A D Dmax Dmin Di E

= = = = = =

Cross section area Nominal outside diameter. Greatest measured inside or outside diameter Smallest measured inside or outside diameter D-2tnom = Nominal internal diameter Young’s Modulus

f0

= Ovality, --------------------------------

H Hs ID O OD T Tmax T min

= = = = = = = =

D max – D min D

Abbreviations American Petroleum Institute American Society of Mechanical Engineers American Society for Testing and Materials Automatic Ultrasonic Testing British Standard (Note: Now PD – Public document) Carbon Manganese Conformité Européene (European Conformity) Corrosion Resistant Alloy Det Norske Veritas Dynamic Positioning Electronic Beam Welded Failure Mode Effect Analysis Heat Affected Zone Hazard and Operability Study High Frequency Welding Hydrogen Pressure Induced Cracking Installation Manual International Organisation for Standardisation Charpy value Laser Beam Welded Manufacturing Procedure Qualification Test Manufacturing Procedure Specification Manufacturing Survey Arrangement National Association of Corrosion Engineers Non-Destructive Examination (Non-Destructive Testing) see NDE Norwegian Petroleum Directorate Production Qualification Quality Assurance Quality Control Quality Plan

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Wave height Significant wave height Nominal inside diameter Out of roundness, Dmax - Dmin Nominal outside diameter Operating temperature Maximum design temperature Minimum design temperature

Offshore Service Specification DNV-OSS-305, January 2004 Sec.2 – Page 11

SECTION 2 SERVICE OVERVIEW AND REQUIREMENTS A. General A 100 Objectives 101 The objectives of this section are to provide: a) an overview of certification and verification activities relating to diving systems b) details of DNV’s certification and verification services for diving systems c) information on the classification process in general.

B. Background (Informative) B 100 Introduction 101 Certification of diving systems has been carried out historically with a scope and depth of involvement specified by the certifying body, with the same end result – a certificate. The depth of involvement, or level of certification, has not always been easily detected from the certificate. In addition, the owner may select closer levels of certification involvement to ensure that the certifying body's scope is well defined. Guidance note: The purpose of the diving system certificates and class notation is to confirm that the diving system, as installed and ready for use, is in a condition that complies with the technical requirements. It does not confirm that the schedule or cost of the project has been according to plan. Strictly, the class notation covers only the as-installed condition of the diving system and, hence, the conditions affecting this are of particular interest. However, the certification process requires that all the prior phases are verified and that any temporary phases are in accordance with DNV-OS-E402 and has an acceptable risk level. The certification or verification may, in the described scenarios, provide a statement of compliance at the completion of each of the project’s stages. Class notation will be provided when the diving system is ready for operation, and only when DNV’s scope of work is the certification of the complete project. ---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

B 200 Justifications for certification or classification 201 Some national authorities require certification of diving systems and their components and have appointed specific organisations qualified for this work. 202 Some national authorities may have detailed requirements for the certification activity, while others leave the definition of the necessary work-up to the appointed organisation. Other national authorities require specific documents to be verified and approved by them, some hold the owner responsible for the verification activities and others again, may not have any specific requirements. Guidance note: The term 'statutory certification' is sometimes used to distinguish certification performed by appointment of a national authority from that performed on the general recognition of the certifying body. ---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

203 However, even where national authorities do not require certification of diving systems, certification is a convenient tool for the owner to obtain independent verification of his contractor(s) work or to show financiers, partners, insurers and

the public that the diving system complies with the relevant standard. 204 Additionally, it is good business practice to subject critical work to a third-party check, as this reduces the possibility of errors remaining undetected. Third-party certification will ensure that the verifier has an independent view and perspective when performing this activity. Furthermore, it will avoid the situation where errors could be overlooked by engineers because of their closeness to the work with the diving system. 205 Certification can also be used as a part of the project risk management. As certification increases confidence that the diving system complies with the requirements placed on it by national authorities and the owner, it follows that the risk of failure of the diving system decreases due to independent certification. Thus, certification contributes to project risk management and risk reduction.

C. Overview on Verification, Certification and Classification C 100 General 101 Applying these principles of verification for distinct smaller or larger parts of the diving system or selected phases may not result in a certificate. Therefore, instead of using the term certification, the term verification is used to describe this service. 102 Verification to DNV-OS-E402, to other standards or to clients’ specifications may use this OSS as a communication platform and for the preparation of project-specific scope of worktables in the same manner as for certification. C 200 Purpose of verification 201 Verification constitutes a systematic and independent examination of the various phases in the life of a diving system to determine whether it has (or continues to have) sufficient integrity for its purpose. C 300 Verification as a complementary activity 301 Verification shall be complementary to routine design, construction and operations activities and not a substitute for them. Therefore, although verification will take into account the work, and the assurance of that work, carried out by the owner and its contractors, it is inevitable that it will duplicate some work that has been carried out previously by other parties involved in the diving system. C 400 Project management 401 Certification should be planned in close co-operation with the owner and each of its contractors, to provide a scope of work that is tailor-made to the schedule of each production process or activity, i.e. to make the verification activities, surveillance and hold points, an integrated activity. Guidance note: Some contractors have approved quality control systems and quality control departments, with competent personnel to perform, for example, inspection at manufacturing plants and specialist material engineers competent to review and verify the performance of manufacturers. Reference is made to 'Manufacturing Survey Arrangements' described in DNV Rules for Classification of Ships Pt.1 Ch.1 Sec.3 A. In that situation DNV’s certification activities can be confined to:

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Offshore Service Specification DNV-OSS-305, January 2004 Page 12 – Sec.2

a) b) c)

reviewing the competence of the Contractor’s personnel auditing their working methods and their performance of that work reviewing the documents produced by them. ---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

C 500 Certification to DNV-OS-E402 501 The certification process described in this OSS is tailormade for the certification of diving systems built in accordance with the offshore standard - DNV-OS-E402 "Diving Systems". 502 Where DNV-OS-E402 refers to certification, survey, acceptance, agreement or qualification this shall be by DNV. A list of these instances is provided in Appendix B. C 600 Certification to other standards 601 DNV certification to internationally recognised standards shall follow the principles described in this OSS. 602 Where other standards and external criteria are used, the exact terms of reference and documents to be issued shall be agreed at the beginning of the project and formally defined in the contract. The use of other standards does not allow for a reduction of the quality management requirements as described in the safety philosophy of DNV-OS-E402. 603 DNV reserves the right to call for additional requirements to cover issues essential to the certification and classification process if not covered by the standards in question. 604 It is normally not acceptable to mix standards due to the possible differences in safety philosophies. Guidance note: Most standards are a coherent collection of requirements for all the relevant aspects of a system. These aspects are normally adjusted to give an overall acceptable safety level. To pick requirements from different standards can then easily result in unpredictable (low) levels of safety. However, in some instances a mixture of standards need to be applied where certain aspects are not covered in one standard alone. (e.g. ASME PVHO-1 applies to acrylic windows regardless of the design code for the pressure vessel. ---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

C 700 Classification 701 DNV Classification is described in Sec.3 D300, in DNV-OSS-101 “Rules for Classification of Offshore Drilling and Support Units” and in DNV Rules for Ships.

D. Service Process D 100 General principles 101 The process of DNV’s certification and verification of diving systems is based on distinct project phases and the recognition of key milestones. Verification performed by DNV as part of the certification process, progresses through these project phases and includes all aspects of the project. 102 The certification process follows the project phases: Pre-certification (optional): a) conceptual design.

d) manufacturing of diving systems. Classification a) installation b) project completion with issue of classification certificate including DSV class notation. Maintenance of Class Notation: a) operations, maintenance, repair and surveys. See also DNV-OSS-101 “Rules for Classification of Offshore Drilling and Support Units”, and DNV Rules for Ships Pt.7 Ch.2 Sec.4 C. Guidance note: Where projects or other standards use other terms, these can be used provided they are well defined and agreed. Appendix E includes some generic descriptions of typical subphases. This may be used as guidance when agreeing the content or completeness of a sub-phase. ---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

D 200 Scopes of work 201 Generic scopes of work for certification and verification are given in the tables in this section. 202 The classification will cover the following matters: a) the vessel's ability to keep its position during diving operations b) the hull structural arrangements related to the diving system, e.g. moon pool (launching and recovery well for bell) c) the arrangement and installation of the diving system d) the complete diving system with respect to safety and functioning e) stability and floatability. D 300 Overall safety objective 301 The owner should define an overall safety objective covering all phases of the diving system from design to operation. The safety objective should address the main safety goals as well as establishing acceptance criteria for the level of risk acceptable to the owner. Depending on the diving operation and its location the risk could be measured in terms of human injuries as well as environmental, political and economic consequences. D 400 Assessment of risk 401 A systematic review should be carried out to identify and evaluate the probabilities and consequences of failures in the diving system. The extent of the review shall reflect the criticality of the diving system, the planned operation and previous experience with similar diving systems. This review shall identify the risk to the operation of the diving system and to the health and safety of personnel associated with it or in its vicinity. The scope should be agreed upon. 402 Once the risks have been identified their extent can be reduced to a level as low as reasonably practicable by means of one or both of: a) reduction in the probability of failure b) mitigation of the consequences of failure.

Certification: a) detail design b) construction. c) manufacturing of diving system components and assemblies

The result of the systematic review of these risks is measured against the safety objectives. D 500 Technical innovation and contractor experience 501 The degree of technical innovation in the diving system

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shall be considered. Risks to the diving operation are likely to be greater for a diving system with a high degree of technical innovation than with a diving system designed, manufactured and installed to well-known criteria in well-known vessels.

Guidance note: The recommendation springs from DNV’s experience with projects where communications difficulties between the parties have jeopardised the issue of certificates.

502 Similarly, the degree of risk to the diving system should be considered where contractors are inexperienced or the work schedule is tight.

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503

1st party

Factors to be considered include:

owner

a) degree of difficulty in achieving technical requirements b) knowledge of similar diving systems c) knowledge of contractors’ general system experience d) knowledge of contractors’ experience in similar work. D 600

3rd party Designer or constructor

Quality management systems

601 Adequate quality management systems shall be implemented to ensure that gross errors in the work for diving system design, construction and operations are limited. Guidance note: By ‘adequate’ it is meant that the quality management system should reflect the complexity of the work and the ability of the workers to implement the system. The functionality of the quality management system depends on the ability to take a sober approach, and arrive at a system that does not appear alienating. ---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

602 Factors to be considered when evaluating the adequacy of the quality management system include: a) whether or not an ISO 9000 or equivalent certified system is in place b) results from external audits c) results from internal audits d) experience with contractors’ previous work e) project work-force familiarity with the quality management system, e.g. has there been a rapid expansion of the work force or are all parties of a joint venture familiar with the same system. Guidance note: Most organisations have quality management systems certified by an accredited third party certification body. However, when business increases, they expand their staff quickly by taking on contract personnel often for a fixed period or for the duration of a particular contract. This influx of new personnel can lead to problems of control of both the whole organisation and of particular projects. Quality problems may then occur, as these new personnel have no detailed knowledge of the organisation’s business methods, its ethos or its working procedures. ---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

Communication lines

101 Communication lines are illustrated in Figure 1 Communication Lines. Which lines that are open for communication depends on the particular contractual agreements. 102 For instances where DNV (3rd party) does not have a contract with the owner (1st party), DNV recommends strongly that the owner, through his contract with the 2nd party, secures a direct communication line from DNV to owner and vice versa.

DNV

Figure 1 Communication Lines

E 200 Obligations 201 In order to achieve the purpose and benefits of certification the involved parties shall be mutually obliged to share and act upon all relevant information pertaining to the certification scope. 202 The owner shall be obliged to: a) inform DNV about the basis for selecting the safety objectives and the investigations and assumptions made in this context b) give DNV full access to all information concerning the certification scope for the diving system and ensure that clauses to this effect are included in contracts for parties acting on behalf of the owner and parties providing products, processes and services covered by the certification scope, c) ensure that DNV is involved in the handling of deviations from specified requirements within the certification scope d) act upon information provided by DNV with respect to events or circumstances that may jeopardise the project and or the purpose and benefit of certification e) ensure that the Safety objective established for the project is known and pursued by parties acting on behalf of the owner and parties providing products, processes and services covered by the certification scope. 203

Second parties shall be obliged to:

a) perform their assigned tasks in accordance with the safety objectives established for the diving project b) provide the owner and DNV with all relevant information pertaining to the certification scope. 204

E. Information Flow E 100

2nd party

DNV will be obliged to:

a) inform the owner if, in the opinion of DNV, the basis for selecting the safety objectives or the assumptions made in this respect are found to be in error or assessed incorrectly b) inform the owner of events or circumstances that, in the opinion of DNV, may jeopardise the project and or the purpose and benefit of certification c) effectively perform all certification work and adjust the level of involvement according to the actual performance of parties providing products, processes and services covered by the certification scope.

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E 300 Notification 301 It is assumed that the owner make an assessment of the required safety objectives for a project before preparing tender documents for design and construction activities. The owner can then specify this in Invitations to Tender. This will give contractors clear guidance and reference when estimating the extent and cost of efforts associated with certification activities. Guidance note: It is recommended that a concept evaluation of the project be done by DNV, to identify the major issues, which need to be agreed at the start of the project. ---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

F. Pre-certification F 100 Verification during conceptual design 101 Verification need not only be performed as part of a complete certification of a diving system but can be standalone service for all or part of a project. 102 Verification during the conceptual and or feasibility studies of a project is not a prerequisite for certification. However, verification of the early stages of a project can reduce the need for verification during the design and construction phases. 103 It is advisable to combine the design verification during pre-certification with additional review of the operational aspects of the support vessel and the project schedule.

G. Certification and Classification G 100 General 101 Design and construction aspects, relevant to diving system safety and integrity, will be covered by certification. 102 Verification describes the individual activities undertaken by DNV at the various stages of the design, construction and operation of the diving system. 103 Certification describes the totality of verification activities leading up to the issue of a DNV certificate. 104 The following parts and systems are covered by DNV’s certification and verification of a complete diving system (for definitions, see Sec.1 D and DNV-OS-E402 Sec.1 D): a) b) c) d) e) f) g) h) i) j) k) l) m) n) o)

chambers bell permanent gas storage containers other pressure vessels life support systems electrical systems and installations fire protection, detection and extinction launch and recovery systems main umbilical pipes, valves and fittings booster pumps and compressors helium reclaim plant (if installed) gas analysers gas mixing units gas absorbers

p) q) r) s) t)

breathing systems depth gauges sanitary system communication system arrangement for hyperbaric rescue of divers in saturation.

G 200 Certification 201 Upon request from the manufacturer, DNV certificates may be issued for a diving system which has been designed, built, equipped, marked, inspected and tested in compliance with the DNV-OSS-305, DNV-OS-E402 and or applicable codes, standards or regulations. These will be stated in the Data Sheet for Diving System (Form 20.201a). 202 The operational limitations and basic assumptions and conditions for use will also be stated in the Data Sheet for Diving System. 203 The Society's commission related to the certification of materials and components (CMC) is completed when the certificates are forwarded to the manufacturer. 204 For environmental control systems a copy of the approved test program completed with the final set points will be endorsed by the Surveyor, and shall eventually be kept available onboard. G 300 Classification 301 Upon class request, the Society's surveyor may inspect the installation of the system and attend the final necessary tests. 302 When a diving system certified by the Society has been installed on a ship or a mobile offshore platform covered by the Society’s classification, an additional class notation DSV (see G303) may be included in the ship's or the platform's class, provided the following requirements are met: a) The requirements for stability and floatability are as given in DNV Rules for Classification of Ships Pt.5 Ch.7 Sec.3 D and Sec.4 B for additional class notation SF, as far as these requirements are applicable. b) The ship or the platform (semi-submersible) shall be arranged for keeping its position safely during diving operations. The DYNPOS Class Notation AUTR is required as a minimum level of redundancy for diving in conjunction with DP operations. However, contracts may stipulate a higher level of redundancy for certain operations, such as hyperbaric welding. c) Cranes and other lifting appliances for diving bell handling systems shall be certified in compliance with the Society's rules for Certification of Lifting Appliances (separate publication), as far as applicable, and the additional requirements for handling systems given in DNVOS-E402 Sec.7. d) The installation and testing requirements given in DNV Rules for Classification of Ships or DNV-OSS-101 ”Rules for Classification of Offshore Drilling and Support Units” shall have been complied with in addition to the testing requirements given in DNV-OS-E402 Sec.2 J, which also apply. e) The diving system will be subjected to periodical surveys as specified in the respective rules for classification, in order to ensure that the system is properly maintained in good condition for retention of class. See also DNV-OSS101 “Rules for Classification of Offshore Drilling and Support Units” Ch.3 and DNV Rules for Ships Pt.7 Ch.2 Sec.4C. 303 Depending on the operational restrictions, diving systems may obtain one of the class notations given in Table G1

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cordance with relevant parts of DNV-OS-E402 Sec.2 J, the system or components may be registered under the Class Notation with DNV.

for a ship or mobile offshore platform. Table G1 Class Notations Class DSVSURFACE Restrictions dmax< 60msw* Top< 8 hours

Provisions

DSVDSV-SAT BOUNCE dmax< 125msw* None, except Top< 24 hours those imposed by the requirements and assumptions in the certificate, appendix to Classification certificate and Data Sheet (20.201a) Open or closed Closed bell Closed bell bell allowed No HES required

HES by means of bell allowed

Dedicated HES required

*msw = metres sea water, dmax = maximum operating depth.

306 When a diving system not certified by the Society, is installed onboard a ship or mobile offshore unit covered by the Society's Classification, the diving system shall be designed, manufactured and maintained in accordance with the statutory requirements and periodical surveys shall be carried out by a competent person. The Society can require verifying that equipment which may have an influence on the safety of the ship, or the ship's personnel, shall be reviewed with respect to requirements in the Society's Rules. Such equipment may include, but is not limited to, foundations and structures relating to heavy items of equipment, electrical consumers supplied from the ships electrical supply and equipment posing a risk in terms of fire and/or explosion. G 400

Overall Project Management

Guidance note: As life saving appliances is covered by statutory regulations, there may be overriding requirements for Hyperbaric Evacuation Systems (HES). Consequently, it is important to inform DNV at an early stage what Flag State is intended for the vessel and what geographical areas of operation the diving system should be approved for.

401 It is assumed that overall project management is implemented as a means by which the entire project is controlled.

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403 Documents required in each section of DNV-OS-E402 shall be submitted for review and or approval by DNV. The documents required shall be organised in accordance with a register.

Requirements which do not specifically refer to DSV-SURFACE, DSV-BOUNCE or DSV-SAT diving systems, or which are called minimum requirements in the Standard, apply to all systems. In DNV-OS-E402, the major differences between DSV-SURFACE, DSV-BOUNCE and DSV-SAT diving systems appear as requirements for the: a) physical size of the chambers b) life support system c) control stand d) communication system e) capacity of emergency power supply. 304 When a diving system certified by the Society has been installed on: a) a ship or a mobile offshore platform not covered by the Society's classification, or b) on a fixed offshore installation, or

402 Necessary controls shall be in place to ensure that information flows between the various interfaces. This is especially important where separate contractors have been employed for different phases of the project such as design and installation.

404 Definition of scope of work for overall project management will follow Table G2. Table G2 Scope of work for overall project management Activity Review of the project management process by a) review of project quality management documentation. b) audit of project quality management system c) review of sub-contractor control d) review of interface controls e) review of methods of information flow

G 500

501 Design verification is the examination of the assumptions, methods and results of the design process and is performed at the specified level of certification to ensure that the specified requirements of the diving system will be achieved. It is recommended that Failure Mode Effect Analysis (FMEA) is carried out concurrently with design.

c) on an onshore site,

Guidance note: Levels may apply to various aspects of the certification process, such as the hierarchy of the certificates or the scope of work. The level may be specified by various parties to the contract, by the governing documents or by statutory regulations.

an arrangement similar to classification may be agreed for periodical surveys in order to ensure proper maintenance of the diving system. Corresponding documents may be issued. DNV will require that the ship or mobile offshore platform be classified in a recognized classification society. The main particulars of the diving system will be entered in the “Register of vessels classed with DNV”.

Verification during Design

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502

Design verification will entail:

305 When a diving system, or part of a diving system, has been certified by another recognised classification society, evidence of previous design approval will be required. Such evidence shall include drawings of the arrangement and details bearing the approval stamp, or specifically covered by an approval letter. In addition, for components requiring certification, the corresponding certificates shall be available along with maintenance records.

a) reviewing specifications for design

After review of the evidence and examination and testing in ac-

503

b) reviewing design reports and drawings c) performing independent parallel calculations for certain systems and components d) reviewing specifications for construction and operation, resulting from design. Definition of scope of work for verification of design

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will follow Table G3.

e)

Table G3 Scope of work for verification of design Verification activity Review of the design process by a) review of design quality management documentation b) audit of design quality management system Review of specifications for design by c) review of the design basis with emphasis on the location on and interface with the support vessel. Evaluation of the design criteria Review of design reports and drawings by d) review of the main documentation to ensure that the main conditions have been accounted for in design, that the governing conditions are identified, and that the chosen design philosophies are in accordance with specified codes and standards e) evaluation of the main methods used and spot checks of the input data and the calculation results f) detail review of main design reports Performing independent parallel calculations by g) simplified independent analysis and calculation(s) performed by spot checks h) advanced independent analysis and calculation(s) performed by spot checks Review of specifications for construction and operation by i) spot check of critical aspects j) review of main specifications k) review of underlying specifications

G 600

Verification during Construction

601 Verification during construction is either carried out by means of full time attendance, audits, inspection or spot checks of the work, as appropriate, in sufficient detail to ensure that the specified requirements of the diving system will be achieved. 602 Verification of these activities relates not only to the contractor’s work but also to the monitoring of this work carried out by others. 603 During construction verification shall consist of one, or more, of: a) reviewing the construction process b) reviewing construction procedures c) reviewing qualification process d) surveillance during construction activities e) reviewing final documentation. 604 Definition of scope of work for certification of construction shall follow Table G4 and for manufacturing and fabrication, Table G5 and Table G6 for final testing and completion. Table G4 Scope of work for attendance during manufacturing and fabrication of components Verification activity Review of the manufacturing and fabrication process a) Review of manufacturing management systems b) Audit of the quality management system Review of manufacturing and fabrication procedures c) Review manufacturing, fabrication, method and inspection procedures for confirmation of compliance with the manufacturing specification Review of qualification process d) Review the Manufacturing Procedure Specification, (MPS), Manufacturing Procedure Qualification Test (MPQT), if applicable

Full time attendance during MPQT, if applicable, or first day production Surveillance during manufacturing and fabrication activities f) Attendance during testing, to ensure, based on spot checks, that the delivered products have been produced in accordance with the manufacturing specification Review of final documentation Guidance note: Components and materials may be ordered with certificates of varying degrees of independent 3rd party verification (e.g. 3.1C according to EN 10204). This can be integrated in the overall certification activities, so as not to duplicate work. ---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

Table G5 Scope of work for attendance during installation Verification activity Review of the installation process a) Review of installation management systems b) Audit of the quality management system Review of installation procedures c) Spot check of Installation Manual, (IM) d) For critical operations (identified from the FMEA and HAZOP studies) review the IM Review of qualification process e) For critical operations, review the qualification of the IM f) Full time attendance during tests, if applicable, or at start-up Surveillance during installation activities g) Attendance during start up of each sub-system installation. h) Full time attendance during trials and associated visit- based attendance during testing. Review of final documentation

G 700

Testing

701 After completed installation, the diving system is to be tested in compliance with an approved test program in presence of the surveyor. The required tests are stated in DNV-OSE402 Sec.2 J300. Table G6 Scope of work for attendance during final testing for operation, including as-built survey and project completion Verification activity Review of procedures a) Review of the procedures for system tests to ensure that the test procedure will test the diving system in accordance with the design requirements Surveillance during testing and completion activities b) Attendance during pressure testing. c) Full time attendance during pipe testing and audit based attendance during cleaning, and drying. d) Full time attendance during as-built surveying and system testing Review of final documentation e) Check of as-built documentation f) Review of as-built documentation

H. Certification Documents H 100

Purpose of Certification Documents

101 Certification documents are normally issued by DNV. The purpose of these documents is to provide documentation that objective evidence has been presented to confirm the diving system’s components conformity with the requirements and to document the work performed by DNV.

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102 Final certification documents, consisting of statements and certificates, are formal documents in which DNV states that a particular aspect of the work (a product or service) has been completed in conformance with the requirements for certification specified or requested for the diving system by the owner.

(Classification Certificate) Class notation with Appendix

Guidance note: Examples of document forms are found in Appendix D. ---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

103 Intermediate certification documents may act as a form of progress reporting showing completion of limited certification activities for various issues, items or phases of the project. 104 The certification documents are as follows and the hierarchy is shown in Figure 2 below: a) b) c) d) e) f) g) h) i)

Installation report and Data Sheet

class notation with appendix installation report with data sheet product certificates material certificates verification report intermediate documents audit reports verification comments visit reports and survey reports.

Product Certificates

Material certificates

Figure 2 Document Hierarchy for Certification

H 200 Certification Documents Provided 201 The types of documents issued by DNV for the different stages of the certification process are illustrated in Table H1.

Certification phase Pre - Certification

Certification

H 300 Validity of Certification Documents 301 Certification documents are, in principle, documents confirming that an examination has been carried out, and are valid only at the date of issue. 302 However, for some certificates a specified period of validity, and maintenance conditions for ensuring this validity, may be given in the certificate. e.g. statutory and main Class certificates.

Classification

Operation, Maintenance and Repair

Operation

Retention of Class Notation

Documents for individual phase or natural part thereof: Certificates of materials and components, survey reports and Data Sheet

Project Completion

Installation

Manufacturing of sub-systems and assemblies

Manufacturing of Components

Manufacturing of materials

Letter

Approval letter

Certificate, Data Sheet and Class Notation

Types of Certification Documents Provided

Detail Design

Project Phases

Conceptual Design

Table H1 Diving System Certification – Documents Provided by DNV Reference Standard DNV Offshore Standard DNV-OS- E402 “Diving Systems” and for certification DNV-OSS-305 “Rules for Certification and Verification of Diving Systems” Design Construction

Maintenance of Classification

H 400 Classification Certificate (Class Notation) 401 A DSV Class notation will be issued in the Classification Certificate as a formal statement confirming that the diving system has been completed in accordance with specified requirements. 402 An appendix to the Class certificate and a Data Sheet for diving system will support the Class Notation. 403 The Class notation will only be issued when all relevant activities have been satisfactorily completed. Outstanding issues will prevent the issue of the Class notation unless deemed

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of lesser importance, in which case Conditions of Class will be issued. 404 Accompanying documents to the class notation will contain: a) diving system description and item number, in a data sheet (DNV Form 20.201a) accompanying the certificates and reports b) operational limitations and conditions of use for which the diving system is intended c) codes and standards with which the diving system has been found to comply. 405 An officer at DNV Høvik will sign the full-term classification certificate, whereas the local officers will sign the underlying certificates. A local DNV officer will sign the interim class certificate. 406 The DNV Høvik office will file the as-built documentation including the main certificates and drawings. Underlying certificates are filed at the local station. 407 Examples of some documents are shown in Appendix D. H 500 Verification Comments 501 Reviews of documents will be reported using plan approval letters of response. These letters may give details to the client of aspects that DNV: a) considers do not meet the specified requirements b) does not have enough information to make a decision c) offers advice based on its own experience. Only in the first two instances does DNV expect a response from the owner or its contractors. 502 An example of a typical plan approval letter of response is shown in Appendix D. H 600 Audit Report 601 Audit reports are issued to confirm that a company’s quality management system has been reviewed to confirm compliance (or not) with the nominated standard and project requirements. In addition, the audit reports confirm compliance with the documented procedures and that these procedures are effective. 602 Audit reports will contain information such as whether: a) the company has a documented quality system b) this quality system been certified by an accredited certification body for the product (or service) in question c) the quality system covers the following quality assurance elements adequately for the product: i) ii) iii) iv) v) vi) vii)

organisation authority and responsibility job descriptions for key persons internal quality audits documentation change control job instructions and procedures non-conformance and corrective action.

d) there are adequate procedures for activities such as: i) calibration of equipment ii) material identification and marking iii) control of special processes such as welding, NDT, PWHT iv) non-conformance identification and handling

v) inspection status vi) final inspection. e) the company’s facilities are, in general, considered adequate for the scope of supply f) a quality plan been prepared for the order concerned g) the purchaser or their appointed inspection agency are planned to attend the works h) there are any problem areas identified. H 700 Survey Reports and Visit Reports 701 Visit reports are documentation and recording of attendance activities by DNV. Guidance note: Visit reports are called by different names. e.g. Survey Report. ---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

702 A survey report will contain enough information to identify clearly the product or service that has been examined, the operating conditions or specifications to which it has been examined and the conclusion reached by DNV. 703 The survey report will be printed on the relevant form and will contain as much information as possible in accordance with the standard headings in the form. In addition, the report number will be shown.

I. Use of Quality Management Systems I 100 General 101 The assurance of diving system integrity requires that gross errors during design, construction and operation be minimised. The likelihood of gross errors shall be reduced in a systematic manner by the operation of a quality management system adequate for the work being carried out. 102 Quality management systems frequently are documented at three levels: a) the quality manual and related procedures document how the organisation, as a whole, manages the quality of all its products and services b) the quality plan documents the specific procedures related to a particular project c) the inspection and test plan documents how the quality control activities for a particular project shall be carried out and recorded. I 200 Quality Plans 201 The basic function of a quality plan is as an aid in the management of a project. In an organisation with many quality procedures for a variety of functions the quality plan states those that are applicable to that particular project. The quality plan acts as a route map through the complexities of management of the project and highlights those activities relevant to quality management. 202 The project quality plan normally consists of two parts; firstly, a narrative description of the means of controlling the project, and secondly, a tabular description of the inspections and tests to be carried out during the work. 203 The quality plan should address: a) organisational details of the project b) authorities and responsibilities of key personnel c) interfaces between, the client, contractors, sub-contractors and third parties

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d) quality assurance activities placed on sub-contractors e) cross references to existing company procedures. 204 The narrative part of the quality plan should include a description of: a) b) c) d) e)

the applicable standards project organisation and responsibilities review of the contractual requirements project planning and progress reporting procedures for such activities as design control, purchasing, construction, installation, commissioning, interface control and auditing.

205 Additionally, the narrative part of the plan should describe the documentation requirements It should be specified: a) b) c) d) e) f) g) h)

what documents are required at what stage these documents are required who is responsible for preparing the documents relevant parties to whom documents are submitted how any necessary approvals are acquired who has originals and who has copies if copies have to be certified copies the length of time documents are to be retained and by whom.

I 300 Inspection and Test Plans 301 The tabular description of the inspections and tests to be carried out during the work is frequently known as the inspection and test plan. 302 The following items should be checked for inclusion within the inspection and test plan: a) each inspection and test point and its relative location in the production cycle should be shown b) the characteristics to be inspected and tested at each point should be identified c) the use of sub-contractors should be indicated and details of how the verification of sub-contractor’s quality shall be carried out should be shown d) hold points established by the constructor, the operator or a third party, where witness or review of the selected inspection or test is required, should be shown. I 400 Review of Quality Management Programme 401 The contractor’s quality manual will be reviewed for compliance with ISO 9001 or 9002 as appropriate. The contractor’s operations should be audited to establish compliance with the documented system. 402 If the contractor has a quality system certified by an accredited third party certification body, this may be taken as evidence of a satisfactory quality system provided the certificate is relevant to the contractor’s scope of work for the system. However, the last two years’ periodical audit reports shall be reviewed to identify if any recurring non-conformities have been revealed. 403 Any weaknesses revealed during this audit, or review of periodical audit reports, shall be considered when planning the contractor monitoring activities. 404 Surveillance of the continuing acceptability of the contractor’s quality management system is carried out by observing a selection of audits carried out by the contractor as part of its internal audit system. The audits to be observed should be selected over the length of the project at suitable intervals and

should cover as wide a selection of activities as possible. 405 Contractors’ inspection and test plans for the various activities undertaken during their scope of work for the project will be reviewed and accepted, if adequate.

J. Maintenance of Class Notation J 100 General 101 During the operations phase, verification in order to maintain the Class notation is outlined in DNV-OSS-101 “Rules for Classification of Offshore Drilling and Support Units” and DNV Rules for Ships. J 200 Validity of Certification Documents 201 A prerequisite for the retention of validity of certificates in the operations phase is that an in-service contract has been established between the owner, or owner's representative, and DNV. 202 The period of validity of a Class certificate subject to examination by DNV will not exceed 5 years. After that period the Class certificate may be renewed, provided a satisfactory renewal survey has been carried out. 203 Some certificates having a period of validity will have a specific area to be signed by DNV annually showing satisfactory completion of the annual assessments required so as to continue the certificate’s validity. These certificates will become invalid if the signatures are not present. For diving systems this applies to the statutory certificate 'IMO Diving System Safety Certificate'. J 300 Assumptions 301 Classification is based on the assumption that: a) the diving systems shall be properly maintained and operated by competent personnel b) that a pre-check procedure is followed to ensure that all systems and components function properly before start of each operation c) that current, wave and wind conditions shall be within the design limits for the various systems. 302 Diving systems in operation will retain their class notation provided that: a) the diving system is operated within the specified limitations b) the owner provides adequate documentation from inspection and maintenance activities c) the owner maintains any installed systems for condition monitoring and carries out condition evaluations as applicable d) information about damage, repairs and modifications, which may affect the certification, is promptly reported to DNV e) Conditions of Class issued by DNV are acted upon within the specified time. 303 It is also assumed that whenever a significant component of the diving system is repaired or replaced it is re-tested or certified in accordance with the Service Specification. A report will be issued after any modification or repair of the diving system. 304 Diving systems that are temporarily out of service shall be subject to periodical inspections if the class notation is to be retained. The inspection requirements will be agreed upon between the owner and DNV.

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305 to:

The class notation can be withdrawn if the owner fails

a) comply with the operational procedures for the diving system accepted by DNV b) carry out the regular in-service inspection and maintenance programme according to the procedures accepted by DNV c) comply with any conditions of class issued by DNV. 306 Additionally, the class notation can be withdrawn if the diving system: a) is damaged, or is suspected of having been damaged, in a manner likely to impair its safety or integrity b) demonstrates signs of deterioration likely to impair its safety or integrity c) is subjected to any modifications or repairs, which can impair its safety or integrity d) is considered demobilised. 307 If the situation leading to withdrawal of the Class notation no longer exists, the Notation may be reinstated. However, the diving system will be subject to special assessment or monitoring prior to and or following the reinstating of the Class Notation. J 400 Verification During Operation 401 Verification during operation is carried out by periodical or occasional surveys, of the system in sufficient detail to ensure that the specified requirements of the system continue to be achieved. 402 Assessment of these activities will relate to the owner’s, as well as any contractor’s, work. 403 Periodical assessments will be carried out to confirm that any deterioration of the diving system is within acceptable limits and that the diving system continues to be fit for its intended purpose. Guidance note: Periodic surveys are normally done on an annual basis, with renewal surveys done every fifth year. For DNV class, intermediate surveys are done at the second or third annual survey. (See DNV-OSS-101 “Rules for Classification of Offshore Drilling and Support Units” Ch.3 Sec.4 and DNV Rules for Classification of Ships Pt.7 Ch.2) ---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

404 Additional assessments shall be carried out to confirm that any damage, deterioration or modification to the diving system does not render the diving system unsuitable for its intended purpose.

J 500 Obligations 501 To maintain a Certificate during the operational phase, DNV shall be kept informed about the condition of the diving system. DNV shall have full access to information concerning operation, inspection and maintenance activities. 502 The owner shall notify DNV immediately if any of the events as listed below occur, and DNV will review the need for carrying out assessments and surveys as deemed necessary if: a) the diving system is damaged, or is suspected of having been damaged in a manner likely to impair its safety, reliability, strength or integrity b) the diving system demonstrates signs of deterioration likely to impair its safety, reliability, strength or integrity c) the diving system is subjected to any alterations, repairs or replacements. 503 DNV shall be: a) informed when inspections required to retain the Class notation are to be carried out b) given timely notification of occasions when such parts of the diving system, as are not normally accessible for inspection, may be examined c) given timely advance notification of any diving system repair activities. 504 Once a Condition of Class is issued formally, the validity of the Class is conditional on successful completion of the required action within the specified time. 505 The owner shall notify DNV upon the fulfilment of a non-conformance correction, enabling DNV to carry out a verification of the work. 506 DNV is responsible for, in a timely manner: a) carrying out the agreed assessments b) issuing all reports and any necessary non-conformance report. J 600 Non-conformance report – Condition of Class 601 Where, after assessment of the diving system during the operations phase, DNV does not consider that items examined meet the specified requirements, non-conformance reports are issued in the form of Conditions of Class. 602 Narrative reports containing all relevant information will be issued. This information shall enable precise identification of the area of DNV’s concern. 603 No corrective action will be proposed by DNV, as it is the owner’s responsibility to do so.

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APPENDIX A INSTANCES WHERE DNV-OSS-305 (AND DNV-OS-E402) REQUIRE CERTIFICATION A. General A 100 Introduction 101 The Tables B to E give the instances where DNV-OSE402 requires certification. In those cases where DNV is providing a certificate, this shall be a DNV Product Certificate (NV). (See DNV Rules for Ships Pt.1 Ch.1 Sec.3 A900 regarding definitions of DNV Product Certificates (NV), Works Cer-

tificates (W) and Test Report (TR)). 102 The table is subdivided into: a) b) c) d)

design materials and components installation and operations.

B. Design and Manufacturers Table B1 Instances of Certification required in DNV-OS-E402 - Design and Manufacturers Section Letter Hundred Description 3 C 201 Manufacturers of pressure vessels - Approved manufacturer 3 C 202 Welders - Approved welders 3 C 203 NDE operators - Approved NDE operators 3 E 101 Manufacturers of gas cylinders - Approved manufacturer 3 F 301 Manufacturers of acrylic cast material - Approved manufacturer by ASME Table B2 Instances of Certification required in DNV-OSS-305 - Design and Manufacturers Section Letter Hundred Description -

C. Materials and Components Table C1 Instances of Certification required in DNV-OS-E402 - Materials and Components Section Letter Hundred Description 2 E 301 Certified components for systems used in Hazardous Zone 2. - Special consideration 3 B 105 Pressure vessels for human occupancy (PVHO) - NV Product Certificate 3 B 108 Windows in PVHO - NV Product Certificate 3 C 102 Material grades - TR Test Reports 3 C 103 Materials for main pressure retaining parts - NV Product Certificate 3 C 104 Stainless steel parts welded to non-stainless pressure vessel - TR Test Report 3 E 101 Gas cylinders - NV Product Certificate 3 E 101 Gas bags for Helium reclaim systems - (TR) Test Report 3 E 102 Materials for Gas cylinders - NV Product Certificate or W Certificate 3 E 400 Production tests of gas cylinders - TR Test Reports 3 F 201 Materials for acrylic windows - TR Test Reports 3 F 401 Cast materials for windows - W Certificate (3) (F) (501) (Windows in PVHO - NV Certificate) as for Sec.3 B108 4 B 201 Pressure relief devices and shut-off valves - W Works certificates 4 C 101 Manifolds - (W) Works Certificate and (TR) Test Report. 4 C 301 BIBS Masks - (W) Works certificate 4 D 104 Components for oxygen systems - (TR) Test Report 4 E 101 Pressure relief valves - (W) Works certificates and (TR) Test Report* 4 E 103 Filters - (W) Works certificate 4 E 105 Shut-off valves - (W) Works certificates 4 E 201 Overpressure alarm - (W) Works certificate and (TR) Test Report 4 E 301 Non-return valves, flow-fuses and valves - (W) Works certificates and (TR) Test Reports 4 E 303 Safety valves and Overpressure alarm - (W) Works certificate and (TR) Test Report 4 E 304 Chamber mounted valves for water - (W) Works certificate and (TR) Test Report

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Table C1 Instances of Certification required in DNV-OS-E402 - Materials and Components (Continued) 4 F Heaters for Bells and chambers - (W) Works Certificate and (TR) Test Report 4 F 101 Temperature indicator - (W) Works certificate and (TR) Test Report 4 F 200 Temperature controls - (W) Works certificate 4 F 401 Noise reduction - (TR) Test Report 4 G 200 Control, alarm and safety systems in CCBS - (W) Works certificates and (TR) Test Reports. 4 H 100 Closed Circuit Breathing System (CCBS) - (NV) Product Certificate and (TR) Test Reports 4 I 102/103 Lights - (W) Works certificates 4 I 203 Monitors in wet bell - (TR) Test Reports 5 B Electrical motors - (W) Works certificate under 100 kW - (NV) Product Certificate over 100kW 5 B 305 Fire Proof Cables - Type Approval and (W) Works Certificate 5 B 601 Electrical switchboards - NV Product Certificate 5 C 501 Cables - Type Approval or (W) Works certificate with (TR) Test Report 5 C 502 Electrical penetrators for pressure vessels - NV Product Certificate and TR Test Report 5 D 5 E 6 B 102 Non-hazardous materials - (TR) Test Report 6 B 202 A-60 Fire division including bulkhead penetrators - DNV Type Approval Certificates 6 C 100/200 Fire detection and alarm systems - Type Approval and (NV) Product certificate 6 D 100 Fixed fire extinguishing system - Various certificates and Type Approval depending on system. ref. DNV Rules for Ships Pt.4 Ch.10. - Sprinklers require Type Approval and (W) Works Certificates 6 D 200 Manually operated fire fighting device for inner area - Type Approval and/or (TR) Test Report and/or (W) Works certificate depending on device. 6 E 101 Fireman’s outfit - Various certification requirements depending on Statutory regulations. (W) Works Certificates as a minimum with (TR) Test Reports. 6 E 201 Portable fire extinguishers - Type Approval ref. DNV Rules for Ships Pt.4 Ch.10 7 A 101 Launch and recovery system certified as lifting appliance - NV Product Certificate 7 A Winches and power packs - (NV) Product Certificates 7 C 201 Ropes - (NV) Product certificates with (TR) Test Reports 7 C 202 Blocks, Sheaves and shackles - (NV) Product certificates 7 C 203 Materials for structural members in launch and recovery systems - NV Product Certificate 8 A 402 Materials and components in oxygen systems - (TR) Test Report and (W) Works Certificates 8 B Piping – (NV) Product or (W) Works Certificate (see Ship Rules Pt.4 Ch.6) 8 B 101 Welding – WPQ, WPS and welders 8 B 301 Oxygen shock test – (TR) Test report 8 B 203 Flexible hose assemblies (with couplings) - Type Approval Certificate and Works Certificate (W) 8 C Valves and Pressure regulators - (W) Works Certificates 8 D Fittings and Pipe connections - (W) Works Certificates 8 E Compressors - (NV) Product Certificate 8 F Umbilical - (NV) Product Certificate 9 Hyperbaric Evacuation System and Hyperbaric Evacuation Unit - Statement/Certificate of conformance depending on statutory engagement. - (TR) Test Report (9) (A) (402) (Chamber for Hyperbaric Evacuation Unit) as for Sec.3 B105 9 A 1801 Launch and Recovery system (HES) - Type Approval and (TR) Test Report Table C2 Instances of Certification required in DNV-OSS-305 - Materials and Components Section Letter Hundred Description -

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D. Installation Table D1 Instances of Certification required in DNV-OS-E402 - Installation Section Letter Hundred Description 2 C 500 Certification of diving system 2 C 700 Classification of diving system 2 J 300 Installation report 2 K Survey report Table D2 Instances of Certification required in DNV-OSS-305 – Installation Section Letter Hundred Description 2 G 200 Certification of Diving System 2 G 300 Classification of Diving System 2 H 200 Certification documents 2 H 401 Classification Certificate 2 H 402 Appendix to Classification Certificate 2 H 405 Full term or Interim Class Certificate

E. Operations Table E1 Instances of Certification required in DNV-OS-E402 – Operations Section Letter Hundred Description -

Table E2 Instances of Certification required in DNV-OSS-305 - Operations Section Letter Hundred Description 2 J 202 Renewal of Classification Certificate 2 J 506 Survey reports

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APPENDIX B LIST OF INSTANCES WHERE DNV-OSS-305 (AND DNV-OS-E402) REQUIRE ATTENDANCE BY DNV 102 The table is subdivided into:

A. General A 100 Introduction 101 Tables B to E give the instances where DNV-OSS-305 and or DNV-OS-E402 require attendance by a surveyor. In those cases where DNV is providing a certificate, this attendance shall be by DNV.

a) design b) materials and components c) installation d) operations.

B. Design Table B1 Instances of Attendance in DNV-OS-E402 - Design Section Letter Hundred Description 1 A 305/307 Consideration of application of standard 2 B 200 Review safety objective 2 B 300 Verify adequate systematic review 2 B 500 Verify quality assurance by assessment of quality system 2 C 100 Kick-off meeting before concept development 2 C 100 Verify concept development 2 C 200 Review execution plan 2 C 300 Meet at suitable milestone after plan for manufacture, installation and operation. 2 E 301 Define Hazardous zones. Consideration for the location of diving system in Hazardous Zone 2. 2 E 402 Define acceptance level of deflection in ships hull 2 E 403 Acceptance of alternative standard 2 E 601 Approval of foundations 2 F 102 Consideration of requirements for mooring by anchors (if applicable) 2 G 501 Define maximum sea state (see also Sec.7 A103) 2 I 104 Acceptance of documentation 2 J 101 Verify as built status against approved drawings 2 J 103 Approve installation test programme 2 J 201 Acceptance of test pressure to be used for equipment designed over 35 bar. 3 B 104 Acceptance of other pressure vessel code 3 C 102 Consideration for use of other material grades 3 C 201 Manufacturers of pressure vessels - Approval of manufacturer 3 C 202 Welding - Approval of design specifications 3 C 203 NDE - Approval of NDE design specifications 3 D 102 Acceptance of finite element analysis 3 E 101 Manufacturers of gas cylinders - Approval of manufacturer 3 E 103 Acceptance of other standard and Design evaluation 4 Verify design specifications 5 A 500 Define essential services and emergency services 5 B 102 Consideration for use of higher voltages than 30V 5 B 303 Acceptance of control gear in inner area 5 E 601 Consideration for use of other analysis instrumentation to detect other gases 6 B 102 Consideration of alternatives to material testing 6 D 102.a Approved extinguishing system 6 D 105 Consideration of fire extinguishing on open deck 6 E 201 Type Approval of portable fire extinguishers 7 A 103 Define load conditions 7 B Verify design specifications 7 C 203 Acceptance of other codes/standards 8 B Verify design specifications 9 Various considerations in regard to Hyperbaric evacuation.

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Table B2 Instances of Attendance in DNV-OSS-305 - Design Section Letter Hundred Description 2 G 403 Document review 2 G 404 Review overall project management 2 G 500 Design verification 2 G 503 Audit of design quality system 2 H 501 Issue plan approval letters

C. Materials and Components Table C1 Instances of Attendance in DNV-OS-E402 - Materials and Components Section Letter Hundred Description 2 E 301 Certified components for systems used in Hazardous Zone 2. - Special consideration 2 H 104 Verify documentation 2 J Verify overall test requirements in general 2 J 201 Pressure tests – Attend and/or verify tests 2 J 202 Compressors - Attend and/or verify tests 2 J 203 Closed circuit breathing systems (CCBS) - Attend and/or verify tests 2 J 204 Flexible hoses - Attend and/or verify tests 2 J 205 Umbilical - Attend and/or verify tests 2 J 206 Electrical pressure vessel penetrators - Attend and/or verify tests 3 B 102 Testing according to applied standard 3 B 105 Pressure vessels for human occupancy (PVHO) - NV Certification 3 B 107 Smaller gas cylinders considered essential - NV Certification 3 B 108 Windows in PVHO - NV Certification 3 C 102 Additional testing of materials 3 C 103 Materials for main pressure retaining parts - NV Certification 3 C 202 Testing of weld qualifications and approval of welders 3 C 203 Audit NDE and approval of NDE operators 3 C 204 Testing after heat treatment 3 D 102 Consideration of strain gauge measurements as an alternative 3 E 101 Gas cylinders - NV Certification 3 E 102 Materials for Gas cylinders - NV Certification 3 E 103 Testing to applied standard 3 E 400 Production tests 3 F 200/300 Testing of acrylic material in accordance with ASME PVHO-1 (3) (F) (301) Manufacturers of acrylic cast material - Approval of manufacturer by ASME or DNV 3 F 501 Test of windows (Windows in PVHO - NV Certification) as for Sec.3 B110 4 D 104 Testing of components for oxygen systems 4 F Heaters for Bells and chambers - DNV (TR) Test Report 4 H 100 Testing of Closed Circuit Breathing System (CCBS) - (NV) Certification and (TR) Test Reports 5 B Electrical motors - (NV) Certification over 100kW 5 B 305 Fire Proof Cables - DNV Type Approval 5 B 600 Testing in accordance with DNV-OS-201 5 B 601 Electrical switchboards - NV Certification 5 C 201 Testing pressure resistant enclosures – (TR) Test report 5 C 502 Electrical penetrators for pressure vessels - NV Certification and TR Test Report 6 B 102 Test of 'non hazardous materials' – verify test report 6 B 202 A-60 Fire division including bulkhead penetrators - DNV Type Approval Certificates 6 C 100/200 Fire detection and alarm systems - DNV Type Approval and (NV) Certification 6 D 100 Fixed fire extinguishing system - Various certificates and Type Approval depending on system. ref. DNV Rules for Ships Pt.4 Ch.10. - Sprinklers require DNV Type Approval 6 D 200 Manually operated fire fighting device for inner area - DNV Type Approval and/or (TR) Test Report depending on device. 6 E 201 Portable fire extinguishers - DNV Type Approval ref. DNV Rules for Ships Pt.4 Ch.10 7 A 101 Launch and recovery system certified as lifting appliance - NV Certification 7 B 400 Power tests – Test report 7 C Winches and power packs - (NV) Certification 7 C 201 Ropes - (NV) Product Certification with (TR) Test Reports

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7 7 8 8 8 8 8 8 8 8 8 9

C C B B B B B E F F F -

202 203 102 103 104 206 300 600 700 -

9 9 (9) 9

A A (A) A

204 1801 (402) 2600

Blocks, Sheaves and shackles - (NV) Certification Materials for structural members in launch and recovery systems - NV Certification Approve welding materials and welders NDE of piping with (TR) Test Reports Hydrostatic testing of piping with (TR) Test Reports Test of umbilical hoses with (TR) Test Reports Shock testing of hoses for use in oxygen systems with (TR) Test Reports Compressors - (NV) Certification Umbilical - (NV) Certification Mechanical testing of umbilical with (TR) Test Reports Completion testing of umbilical with (TR) Test Reports Hyperbaric Evacuation System and Hyperbaric Evacuation Unit - Statement/Certificate of conformance depending on statutory engagement. - (TR) Test Report Test of Hyperbaric Evacuation System with (TR) Test Reports Launch and Recovery system (HES) - Type Approval and (TR) Test Report (Chamber for Hyperbaric Evacuation Unit) as for Sec.3 B105 Hyperbaric Evacuation System tests and drills with (TR) Test Reports

Table C2 Instances of Attendance in DNV-OSS-305 - Materials and Components Section Letter Hundred Description 2 G 600 Verification during construction 2 H 600 Audits with reports 2 H 700 Surveys with reports 2 I 400 Review of quality management programme

D. Installation Table D1 Instances of Attendance in DNV-OS-E402 - Installation Section Letter Hundred Description 2 C 303 Test requirements with reports 2 J Overall test requirements with reports 2 J 303 Acceptance of actual leakage rate during testing 3 A 400 Testing and marking after completion with reports Table D2 Instances of Attendance in DNV-OSS-305 - Installation Section Letter Hundred Description 2 G 300 Installation survey 2 G 700 Testing 2 H Issue of certification documents 2 H 405 Signing of Classification certificates

E. Operations Table E1 Instances of Attendance in DNV-OS-E402 - Operations Section Letter Hundred Description 2 C 304 Evaluate plans for operations 2 C 305 Evaluate plans for demobilisation 2 J Overall test requirements 3 A 400 Testing and marking after completion Table E2 Instances of Attendance in DNV-OSS-305 - Operations Section Letter Hundred Description 2 J 201 Establish in-service contract 2 J 203 Endorsing certificates periodically 2 J 303 Retesting and certification after repairs 2 J 304 Periodic inspections of systems temporarily out of service 2 J 307 Inspections to reinstate Class Notation 2 J 506 Assessments of corrections of non-conformance 2 J 600 Non-conformance reporting

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APPENDIX C LIST OF SOURCES TO ASSIST IN OBTAINING REFERENCE DOCUMENTS A. General A 100 General Principles 101 The usual procedure for buying standards is to order through the national standards organisations.

Alternatively, one might use a commercial organisation such as http://www.ili.co.uk/. IMO documents are frequently available through local publishing firms, but may also be ordered through the IMO home page.

Reference Document — Offshore Standards DNV-OS-xx (e.g. DNV-OS-E402 "Diving Systems") — A Guide to Hazard and Operability Studies, 1979, Chemical Industries Association Limited, London. — ISO 8402 Quality – Vocabulary, 1994 — ISO 6385-1981 Ergonomic principles of the design of work systems — ISO 9000 guidance on the selection and use of quality systems, — ISO 10013 guidance on developing quality manuals. — ISO 10 380, BS6501 Flexible metallic hoses — ISO 10474 Steel and steel products; inspection documents — ISO 13628-5 Sub sea control umbilicals — BS 4778 Quality Vocabulary, Part 2 Quality Concepts and Related Definitions, 1991, British Standards Institute, London. — EN 45011 General Criteria for Certification Bodies Operating Product Certification, 1998 — EN585, Section 11.5.3. Gas welding equipment - Pressure regulators for gas cylinders used in welding, cutting and allied processes up to 200 bar — EN 10204 Metallic products; types of inspection documents — ASME VIII Div.1 — ASME PVHO-1-1993 edition (or later) "Safety Standard for Pressure Vessels for Human Occupancy". — API codes for hoses — API 17E "Specification for Sub sea Production Control Umbilicals". — IMO Code of Safety for Diving Systems, 1995 Resolution A.831(19), — IMO Guidelines and Specifications for Hyperbaric Evacuation Systems, 1991 Resolution A.692(17) — IMO MSC/Circ.645 of 6 June 1994 “Guidelines for Vessels with dynamic positioning systems” — IMO Resolution A.809(19) in reference to SOLAS Regulation III/ 6.2.1 and III/6.2.2. — IMO res. MSC.61(67) (FTP Code) FTP code : international code for application of fire test procedures : resolution MSC.61(67) : including fire test procedures referred to in and relevant to the FTP code — IMO resolution A.468 (XII) code on noise levels onboard ships. — IMO (MODU) Code chapter 6 — SOLAS 1974 (International Convention for the Safety of Life at Sea). — AODC and IMCA documents — International Electro technical Commission's Publication No.79-10 — NORSOK Standard U-100 'Manned Underwater Operations' — PD5500:2000 Specification for unfired fusion welded pressure vessels SAE J 517 HYDRAULIC HOSE

Source DNV, Veritasvn 1, N-1322, Høvik, Norway http://www.dnv.com. http://www.cia.org.uk/ International Organization for Standardization, Geneva. http://www.iso.ch/

British Standards Institute http://www.bsi-global.com/ European Committee for Standardization, Brussels. http://www.cenorm.be/

American Society of Mechanical Engineers http://www.asme.org/ American Petroleum Institute http://api-ec.api.org/ International Maritime Organization http://www.imo.org/

http://www.imca-int.com/ http://www.iec.ch/ http://www.nts.no/norsok/ British Standards Institute http://www.bsi-global.com/ Society of Automotive Engineers

— EN 853 Rubber hoses and hose assemblies - Wire braid reinforced http://www.sae.org/ hydraulic type - Specification, 856 Rubber hoses and hose assemblies - Rubber-covered spiral wire reinforced hydraulic type Specification, 857 Rubber hoses and hose assemblies - Wire braid reinforced compact type for hydraulic applications - Specification — National Fire Protection Agency Codes NFPA (National Fire Protection Association) 1 Batterymarch Park, P.O. Box 9101, Quincy, MA 02269-9101 USA Teleph: +1 617 770-3000 Fax: +1 617 770-0700 www.nfpa.org

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APPENDIX D EXAMPLES OF CERTIFICATION DOCUMENTS A. General A 100

Introduction

101 Some examples of certification documents are given below. These documents are not intended to be representative of the complete suit of documents issued but are given as examples of the main documents mentioned in the text of the service specification. 102

The documents shown are:

a) Request for Certification/Classification of Diving Systems and parts of Diving Systems (Form no. 14.30a) b) Classification Certificate (Form no. cship) c) Certificate of Interim Class (Form 40.010a)

d) Installation Report Diving System (Form no. 51.71a) e) Certificate for Diving System (Form no. 14.39a) f) Certificate for Transferable Diving System (Form no. 14.33a) g) Data Sheet for Diving System (Form 20.201a) h) Certificate for Chambers for Diving Systems (Form no. 14.31a) i) Certificate for Diving Bells (Form no. 14.32a) j) Examination of Lifting Appliances of Lifting Gear (Form no. CG11) k) Survey Report (Form no. 40.9a) l) Plan Approval letter (Example) m) Diving System Safety Certificate (Form no. DSV-SERT)

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B. Certification Documents B 100

Request for Certification/Classification of Diving Systems and parts of Diving Systems (Form no. 14.30a)

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B 200

Classification Certificate (Form no. cship)

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B 300

Certificate of Interim Class (Form 40.010a)

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B 400

Installation Report Diving System (Form no. 51.71a)

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B 500

Certificate for Diving System (Form no. 14.39a)

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B 600

Certificate for Transferable Diving System (Form no. 14.33a)

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B 700

Data Sheet for Diving System (Form 20.201a)

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B 800

Certificate for Chambers for Diving Systems (Form no. 14.31a)

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B 900

Certificate for Diving Bells (Form no. 14.32a)

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Offshore Service Specification DNV-OSS-305, January 2004 Page 64 – App.D

B 1000 Examination of Lifting Appliances of Lifting Gear (Form no. CG11)

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Offshore Service Specification DNV-OSS-305, January 2004 App.D – Page 65

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Offshore Service Specification DNV-OSS-305, January 2004 Page 66 – App.D

B 1100 Survey Report (Form no. 40.9a)

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Offshore Service Specification DNV-OSS-305, January 2004 App.D – Page 67

B 1200 Plan Approval letter (Example)

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Offshore Service Specification DNV-OSS-305, January 2004 Page 68 – App.D

B 1300 Diving System Safety Certificate (Form no. DSV-SERT)

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Offshore Service Specification DNV-OSS-305, January 2004 App.D – Page 69

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Offshore Service Specification DNV-OSS-305, January 2004 Page 70 – App.D

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Offshore Service Specification DNV-OSS-305, January 2004 App.E – Page 71

APPENDIX E GENERIC DESCRIPTION OF PROJECT SUB-PHASES A. General A 100 Introduction 101 Some examples of descriptions of project sub-phases or milestones are given below. These descriptions are not intended to be precise definitions but are given as suggestions as to how particular project-specific definitions can look.

B. Initial Studies B 100 Feasibility Study 101 A feasibility study is a study directed at evaluation of the feasibility of one or more concepts. 102 The feasibility study is an evaluation of one or more proposed technical concepts against project cost and schedule. It should identify special technical problems and indicate the solution or solve these to the degree necessary to confirm the feasibility of the project cost and schedule. 103 The feasibility study shall address all essential cost and schedule aspects, and should conclude on what the most uncertain factors are and how they should be approached. It should preferably address aspects such as support vessel design, special legislation etc. that are peripheral to diving system integrity. B 200 Concept Study 201 A concept study is a design made to establish the main dimensions and data of the diving system. 202 These include, for example, diameter, wall thickness, material type etc. Other aspects include placement on the support vessel and identification of possible needs for major conversion works (existing vessels and designs) and or (additional) surveys. In short, the study has to establish the basic parameters for the work to be performed in the next stages of design and a means for more detailed cost estimation and possibly comparison of a number of concepts detailed to the same level. 203 It is expected only to indicate the preferred or possible methods or solutions of how to solve design issues, configurations, installation practices, etc. On this basis it is expected that the concept study documentation identifies how far the design has reached, what needs to be further detailed or investigated and how the designer foresees the use of the given information as part of the subsequent design.

mensions and data of the diving system to a level where it is possible to make a detailed cost estimate and to place fabrication orders without taking any significant economic risk. 102

The following should be defined:

a) The maximum significant wave height in which the bell is to be launched, the diving system group (SURFACEBOUNCE - SAT), the range of ambient temperatures, maximum operating depth(s), maximum operating time(s), b) number of chambers and their dimensions, number of bells and their dimensions, other pressure vessels and their particulars, gas storage with particulars, c) number of compressors with their particulars, helium reclaim plant with particulars (if fitted), umbilical with particulars, d) basic information on electrical supply and distribution with estimated consumers and capacity, e) proposed fire protection, f)

particulars of the handling system(s) and

g) proposed hyperbaric evacuation system. h) A draft to the Data Sheet for Diving System (DNV form 20.201a) should be made to give an overview of the system. This Data Sheet may be updated as the project progresses. In short, to establish a design for which only local details remain to be defined. 103 On this basis, it is expected that a large part of the basic design documentation will be the final design documentation and that it identifies what needs to be further detailed or investigated and how this shall be done by the designer. C 200

201 Detail design means the finalisation of design. It can entail all stages of design, as it does not necessarily have to be preceded by another distinct phase. It shall address all design issues for all items of the diving system and finalise all the specifications for the subsequent production phases.

D. Other Phases D 100

C. Design C 100 Basic Design 101 Basic design is a design made to establish the main di-

Detail design

General

101 Descriptions of other project phases, such as Construction (manufacturing, installation, and commissioning) or Operations are not given, as there is rarely any confusion of their meaning or extent. (See also DNV-OS-E402 Sec.1D)

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Offshore Service Specification DNV-OSS-305, January 2004 Page 72 – App.F

APPENDIX F SELECTION OF SAFETY OBJECTIVE A. General A 100 General Principles 101 The selection of the safety objective depends on the criticality of each of the elements that have an impact on the management of risks to the diving system. 102 Certification shall direct greatest effort at those elements of the diving system where the risk is highest and whose failure or reduced performance will have the most significant impact on: a) safety risks b) environmental risks c) economic risks. 103 Suitable selection factors include, but are not limited to, the: a) overall safety objectives for the diving system b) assessment of the risks associated with the diving and the measures taken to reduce these risks c) degree of technical innovation in the diving system d) experience of the contractors in carrying out the work e) quality management systems of the owner and its contractors. 104 Due to the diversity of various diving systems, their contents, their degree of innovation, the geographic location, et cetera, it is not possible to give precise guidelines on how to decide what safety objective is appropriate for each particular diving system. 105 Therefore, guidance is given as a series of questions that should be answered when deciding the appropriate safety objective for a diving system. This list is not exhaustive and other questions should be added to the list if appropriate for a particular diving system. 106 It must be emphasised that the contribution of each element should be judged qualitatively and or quantitatively. Wherever possible quantified risk assessment data should use to provide a justifiable basis for any decisions made. 107 Depending of the stage of the project, the activities may not have taken place yet in which case the questions can also be posed in another form, i.e. “Is …. planned to be?”

Overall Safety Objective

a) Does the safety objective address the main safety goals? b) Does the safety objective establish acceptance criteria for the level of risk acceptable to the owner? c) Is this risk (depending on the diving and its location) measured in terms of human injuries as well as environmental, economic and political consequences? B 200

B 300

Assessment of risk

a) Has a systematic review been carried out to identify and evaluate the probabilities and consequences of failures in the diving system?

Technical Innovation

a) Has the degree of technical innovation in the diving system been considered? b) Has it been considered that risks to the diving are likely to be greater with a high degree of technical innovation than with a diving designed, manufactured and installed to well-known criteria in well-known waters? c) Have factors been considered in the selection of the appropriate certification such as: d) Degree of difficulty in achieving technical requirements? e) Knowledge of similar diving systems? f) Effect of the new diving system on the area or vessel? B 400

Contractors’ Experience

a) Has the degree of risk to the diving system been considered where design, construction or installation contractors are inexperienced? b) Has the degree of risk been considered where the contractors are experienced but not in similar work? c) Has the degree of risk been considered where the work schedule is tight? B 500

B. Trigger Questions B 100

b) Has this review judged the contribution of each element qualitatively and or quantitatively and used, where possible, quantified risk assessment data to provide a justifiable basis for any decisions made? c) Does the extent of the review reflect the criticality of the diving system, the planned operation and previous experience with similar diving systems? d) Does this review identify the risk to the operation of the diving system and to the health and safety of personnel associated with it or in its vicinity? e) Has the extent of the identified risks been reduced to a level as low as reasonably practicable by means of one or both of: f) Reduction in the probability of failure? g) Mitigation of the consequences of failure? h) Has the result of the systematic review of the risks been measured against the owner’s safety objective? i) Has the result of this review been used in the selection of the appropriate certification activity?

Quality Management Systems

a) Have all parties involved in the diving system implemented an adequate quality management system to ensure that gross errors in the work are limited? b) Do these parties include the: i) ii) iii) iv) v)

owner? Design contractor? Construction contractors? Installation contractor? Operator?

c) Do the factors being considered when evaluating the adequacy of the quality management system include:

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Offshore Service Specification DNV-OSS-305, January 2004 App.F – Page 73

d) Whether or not an ISO 9000 or equivalent certified system is in place? i)

Results from external audits?

ii) Results from internal audits? iii) Experience with contractors’ previous work? iv) Project work force familiarity with the quality management system?

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Offshore Service Specification DNV-OSS-305, January 2004 Page 74 – App.F

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