DNV-OSS-305 Rules for Diving Systems

8/6/2019 DNV-OSS-305 Rules for Diving Systems

1/74

OFFSHORE SERVICE SPECIFICATIONDNV-OSS-305RULES FOR CERTIFICATION ANDVERIFICATION OF DIVING SYSTEM S

JANUARY 2004

DE T NORSKE VERITASpyright Det Norske Veritasvided by IHS under license with DNV Licensee=BG EXPLORATION AND PRODUCTION INDIA LTD/5962943001

Not for Resale, 10/18/2006 23:47:49 MDTreproduction or networking permitted without license from IHS

--```,

`,

`,,

,`,

`,,

```,

`````,

``,

`-`-`,,

`,,

`,

`,,

`---


2/74

FOREWORDDET NORSKE VERITAS (DNV) is an autonomous and independent foundation with the objectives of safeguarding life, prop-erty and the environment, at sea and onshore. DNV undertakes classification, certification, and other verification and consultancyservices relating to quality of ships, offshore units and installations, and onshore industries worldwide, and carries out researchin 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 con-sultancy services.~ Offshore Standards. Provide technical provisions and acceptance criteria for general use by the offshore industry as well asthe technical basis for DNV offshore services.~ Recommended Practices. Provide proven technology and sound engineering practice as well as guidance for the higher levelOffshore Service Specifications and Offshore Standards.DNV Offshore Codes are offered within the following areas:A) Qualification, Quality and Safety MethodologyB) Materials TechnologyC) StructuresD) SystemsE) Special FacilitiesF) Pipelines and RisersG) Asset OperationH) Marine OperationsAmendments and CorrectionsThis document is valid until superseded by a new revision. Minor amendments and corrections will be published in a separatedocument on the DNV web-site; normally updated twice per year (April and October). To access the web-site, select short-cutoptions "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] subscription orders or information about subscription terms, please use [email protected] information about DNV services, research and publications can be found at htt,d/www.dnv.com, or can be obtained from DNV,Veritasveien 1, N-1322 Hmi k, Norway; Tel +47 67 57 99 00, Fax +47 67 57 99 11.O Det Norske Veritas. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, includingphotocopying 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 Nonk e Veritas, then Det Nonk e Veritas shall pay compensation to such personfor his proved direct loss or damage However, the compensation shall not exceed an amount equal to ten times the fee charged for the selyice in question, provided that the maximum compen-sation shall never exceed USD 2 millionIn this provision "Det Nonke Veritas" shall mean the Foundation Det Nonke Veritas as well as all its subsidiaries, directors, officers, employees, agents and any other acting on behalf of DetNonk e Veritaspyright Det Norske Veritasvided by IHS under license with DNV Licensee=BG EXPLORATION AND PRODUCTION INDIA LTD/5962943001


-

-```,

`,

`,,,

`,

`,,

```,

`````,

``,

`-`-`,,

`,,

`,

`,,

`---


3/74

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

INTRODUCTIONThis Service Specification was approved by the Director ofTechnology in January 2004.This Service Specification enters into force 1 July 2004.The Rules for Classification of Ships Pt.6 Ch. 1 Sec.4 DivingSystems, remain extant until 1 July 2004, after which theywill 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 re-arranged and included in the following Offshore Codes:DNV-OSS-305- Rules for Certification and Verification ofDNV-OS-E402- Offshore Standard for Diving SystemsDiving Systems

DETNORSKE ERITASpyright Det Norske Veritasvided by IHS under license with DNV Licensee=BG EXPLORATION AND PRODUCTION INDIA LTD/5962943001Not for Resale, 10/18/2006 23:47:49 MDTreproduction or networking permitted without license from IHS

--```,

`,

`,,,

`,

`,,

```,

`````,

``,

`-`-`,,

`,,

`,

`,,

`---


4/74

pyright Det Norske Veritasvided by IHS under license with DNV Licensee=BG EXPLORATION AND PRODUCTION INDIA LTD/5962943001


--```,`,`,,,`,`,,```,`````,``,`-`-`,,`,,`,`,,`---


5/74

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

CONTENTSSec. 1 Introduction........................................................... 7 H 400 Classification Certificate (Class Notation) ..................... 17H 500 Verification Comments ...... ........... 18A. Introduction ............................................................................ 7 H 600 Audit Report ................................................................... 18........... 18100 General .............. .............................. 7 H 700 Survey Reports and Visit Reports. .A 200 Objectives ......................................................................... 7A 300 ApplicatiA 400 ScopeofA 500 Organisation of DNV-OSS-305 ....................................... 7B. Definitions ............................................................ 7B 100 Gene ..................................B 200 Auxiliary verb forms ..........................B 300 Definitions ......... .............................. 7C. Normative References ............................ 8C 200 Offshore Standard .............................. 8

.................................C 500 Cer s and classification notes ..................... 9C 600 Guidelines......................................................................... 9C 700 Other normative references .............................................. 9D. Informative References ......................................................... 10D 100 General ........................................................................... 10E. Abbreviations and SyE 100 Abbreviations .... ............................ 10E 200 Symbols .............Sec. 2 Service Overview and requirements.................11A. General............................................... 11A 100 Objectives ............................................................. 11B 100 Introduction ....................................... 11B 200 Justifications for certification or class 11C. Overview on Ver3cation, Certification and Classification. 1 1C 100 General ............................................... 11C 200 Purpose of verification ....................... 11C 300 Verification as a complementary activity ....................... 11C 400 Project management ....................................................... 11C 500 Certification to DNV-OS-E402 .......... 12C 600 Certification to other standards .......... 12C 700 Classification .................................................................. 12

. .

B. Background (Informative) .................................................... 11

I. Use of Quality Management Systems ........................I 100 General ............................................ 18I 200 Quality Plans........................................................I 300 Inspection and Test Plans ............................................... 19I 400 Review of Quality Management Programme ......J . Maintenance of Class Notation.. ........................................... 19J 100 General ................................................................J 200 Validity of Certification Documents ...................J 300 Assumptions ........................................................J 400 Verification During Operation ....................................... 20J 500 Obligations ..........................................................J 600 Non-conformance report Condition of Class....App. A Instances whereDNV-OSS-305 (and DNV-OS-E402)

Require Certification ......................................... 21A. General......... ......................................... 21........................................... 21B. Design and Manufacturers .................................................... 2 1C. Materials and Components .........D. Installation .................................................................E. Operations.... ........................................ .23App. B List of Instances whereDNV-OSS-305 (AND DNV-OS-E402)Require attendance by DNV .............................. 24A. General......... ........................................ .2 4........................................... 24B. Design .......... ........................................ .2 4C. Materials and Components ......... ......... 25D. Installation ........................................................................... 26E. Operations.... ........................................ .26App. C List of sources to assist in obtaining referencedocuments............................................................ 27

......................................................................... 2727

D. Service Process ..................................................................... 12:i1O0 General principlesD 200 Scopes of work ..............D 300 Overall safety objectiveD 400 Assessment of risk ................D 500 Technical innovation and conD 600 Quality management systems ............................ 13...............................

A 100 General Principles .............. ...........E. Information Flow ..................................... .............................. 13 App. D Examples of Certification Documents..............28E 1O0 Communication lines ...................................................... 13 . -............................ 13 A. crenerai........................................................................E 200 Obligations ........E 300 Notification ........ ............................ 14 A loo Introduction ............................................ 28F.FG.GGGGGGGH.HHH

. .Pre-certification .................................................................... 14100 Verification during conceptual design........................... 14.......................... 14............................ 14

............................ 15

Certification Documents .......................... 16i00 Purpose of Certific ............................... 16200 Certification Documents Provided ................................. 17300 Validity of Certification Documents .. 17

B.B Certification Documents ............. ..........29100 Request for CertificatiodCl(Form no. 14.30a)........................................................... 29Certificate of Interim Class (Form 40.010a) ..................34Installation Report Diving System (Form no. 51.71a) ...36Certificate for Diving System vorm no. 14.39a) ..........39(Form no. 14.33a)........................................................... 40Data Sheet for Diving System (Form 20.201a) ..............41(Formno. 14 ............................................ 61(Form no. CG1 1) .................................................

Diving Systems and parts of Diving SystemsClassification Certificate (Form no. cship)00300400500600

700800 Certificate fo Diving Systems900 Certificate fo vo rm no. 14.32a)... 631000 Examination of Lifting Appliances of Lifting Ge 64

Certificate for Transferable Diving System


--```,`,`,,,`,`,,```,`````

,``,`-`-`,,`,,`,`,,`---


6/74

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

B 1100 SurveyReport ........................ 66B 1200 Plan Approval 67B 1300 Diving System ....................... .68App. E Generic Description of Project Sub-phases......71A. General............. .............................................. 71A 100 Introducti ................................................. 71

...................... 71........................ 71C. Desig ................................................................... 71c 100 gn .................. ....................... ,71

C 200 Detail design ............................................ 71D. Other Phases ......................................... 71D 100 General........ ........................ 71App. F Selectionof Safety Objective............................. 72A. General ..................72A 1O0 General Principles .................. .72B. Trigge ......................................... 72

.........

...........................

B 100 ........................ 72B 200 72B 300 72B 400 72B 500 Quality Management Systems ........................................ 72

DETNORSKE VERITASpyright Det Norske Veritasvided by IHS under license with DNV Licensee=BG EXPLORATION AND PRODUCTION INDIA LTD/5962943001Not for Resale, 10/18/2006 23:47:49 MDTreproduction or networking permitted without license from IHS

--```,

`,

`,,,

`,

`,,

```,

`````,

``,

`-`-`,,

`,,

`,

`,,

`---


7/74

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

SECTION 1INTRODUCTION

A. IntroductionA 100 General101 This Offshore Service Specification (OSS) gives criteriafor 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 con-sist of a three-level hierarchy with these main features:

Principles and procedures related to DNVs certificationand verification services are separate from technical re-quirements and are presented in DNV Offshore ServiceSpecifications. Offshore Service Specifications presentthe scope and extent of DNVs services.Technical requirements are issued as self-contained DNVOffshore Standards. Offshore Standards are issued as neu-tral technical standards to enable their use by national au-thorities, as international codes and as company or projectspecifications without reference to DNVs services.Associated product documents are issued as DNV Recom-mended Practices. The Recommended Practices giveDNVs interpretation of safe engineering practice for gen-eral use by industry.Guidance note:Product documents issued under previous document structuresmay be called Classification Notes or Guidelines.The latest revision of all DNV documents may be found in thepublications 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---

A 200 Objectives201 The objectives of this document are to:

describe DNVs certification and verification services fordiving systemsprovide guidance for owners and other parties for the se-lection of the level of involvement of those carrying outthe certification and verification activitiesprovide a common communication platform for describ-ing the extent of verification activities.

A 300 Application301 This OSS applies to verification, certification and clas-sification during the design, construction and operation of div-ing systems. Classification is described in more detail in DSV-OSS-101 Rules for Classification of Offshore Drilling andSupport Units and in DNV Rules for Ships.302 This OSS describes the necessary activities to be carriedout to obtain initial DNV diving system component certificatesand DS V class notation. In addition the general requirementsoutlined in DNV-OSS-101 Rules for Classification of Off-shore Drilling and Support Units apply.303 Statutory certification of diving systems to the require-ments of national authorities is not included specifically in thescope of application of this OSS. Such certification shall begoverned by the regulations of the appointing authority. How-ever, if these authorities do not give detailed procedures, thisOSS will be used by DNV as a guideline for its work when ap-pointed.304 The primary scope of the certification work is the verifi-cation of the components and the integrity of the diving sys-tem, and or its capacity to support diving operations under the

specified conditions. Other aspects, such as its fitness for pur-pose, with respect to specified diving operations, may be in-cluded in DNVs scope of work, if desired by the client.A 400 Scope of application for verification401 This OSS may be adopted for the verification of parts ofa diving system. The principles may also be used in commu-nications about the extent and scope of verification activitiesthat are not part of a scheme for certification.A 500 Organisation of DNV-OSS-305501 This document consists of two sections and six appendi-ces:~ Sec.1 gives the general scope of the document, informa-tive background information, definitions and references.~ Sec.2 describes the certification process and the activities

for each of the project phases. Furthermore, it describesthe documents issued during and as a result of the certifi-cation process. The use of quality management systems isaddressed here too.~ Appendix A lists the instances where DNV-OS-E402 andDNV-OSS-305 requires certification.~ Appendix B lists the instances where DNV-OS-E402 andDNV-OSS-305 requires attendance by DNV.~ Appendix C is a list of sources to assist in obtaining refer-ence documents.~ Appendix D gives examples of certification documents.~ Appendix E outlines generic project sub phases.~ Appendix F is a series of key questions when selectingsafety objectives.

B. DefinitionsB 100 General101this OSS.B 200 Auxiliary verb forms201 The terms will, cun and muy are used when describingDNVs actions or activities, and the terms shall, should andmuy are used when referring to other parties than DNV.202 Shall: Indicates requirements strictly to be followed inorder to conform with this OSS and from which deviation isnormally not permitted. However, deviations may be permittedin the case of technical alternatives as outlined in DNV-OS-E402 Sec. 1 A304.203 Should:Indicates that among several possibilities, one isrecommended as particularly suitable, without mentioning orexcluding others, or that a certain course of action is preferredbut not necessarily required. Other possibilities may be appliedsubject to agreement.204 Will: Indicates a mandatory action or activity to be un-dertaken by DNV. (See shall for other parties.)205 Can:Indicates an action or activity that DNV not neces-sarily does unless specifically requested by the Client. (Seeshould for other parties.)206 Muy:Verbal form used to indicate a course of action per-missible within the limits of the OSS.B 300 Definitions301

The definitions in DNV-OS-E402 Sec.1 also apply to

Certijicute (of Conformity]: A document signed by a


--```,

`,

`,,,

`,

`,,

```,

`````,

``,

`-`-`,,

`,,

`,

`,,

`---


8/74

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

qualified party affirming that, at the time of assessment, theproduct or service met the stated requirements (BS 4778: Part2).Guidance note:For this OSS, the document s a DNV certificate or a class nota-tion, and it is signed by DNV.For this OSS, a Certificate s a short document (often a singlepage) stating compliance with specified requirements. The re-sults 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 ver-ification activities associated with a process leading up to theissue of a Certificate.Guidance note:In this OSS when Certzjcation is used it designates the overallscope of work or multiple activities for the issue of a Certzjcate,whilst Verzjcation is also used for single activities associatedwith the work. This in essence means that Certzjcation is Verzj-cation for which the deliverable includes the issue of a Certzj-cate.Other (related) definitions are:BS 4778: Part 2: Certzjcation: The authoritative act of docu-menting compliance with requirements.EN 4501 1: Certzjcation of Conformity:Action by a third party,demonstrating that adequate confidence is provided that a dulyidentified product, process or service is in conformity with a spe-cific standard or other normative document.IS 0 8402: 1994: Verijcation:Codinnation by examination andprovision of objective evidence that specified requirements havebeen fulfilled.

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

303 Client: DNVs contractual partner. It may be the pur-chaser, the owner or the contractor.304 Construction phas e (DNV-OS-E402):All phases duringconstruction, including fabrication, installation, testing andcommissioning, up until the installation or system is safe andoperable for intended use. In relation to diving systems, this in-cludes procurements, manufacture assembly, rectification, in-stallation, testing, commissioning and repair.305 Design (DNV-OS-E402): All related engineering to de-sign of the diving system.306 Design phase: An initial phase that takes a systematicapproach to the production of specifications, drawings and oth-er documents to ensure that the diving system meets specifiedrequirements (including design reviews to ensure that designoutput is verified against design input requirements). See IS09001.307 Hazard:A deviation (departure from the design and op-erating intention) which could cause damage, injury or otherform of loss (Chemical Industries Association HAZOPGuide).308 HAZOP (HAZard and Operability study): The applica-tion of a formal systematic critical examination to the processand engineering intentions of new or existing facilities to as-sess the hazard potential of inadvertent operation or malfnc-tion of individual items of equipment and their consequentialeffects on the facility as a whole (Chemical Industries Associ-ation HAZOP Guide).309 Installation (activity) (DNV-OS-E402): The operationsrelated to installing the equipment, diving system or supportstructure, e.g. mounting chambers and handling systems etc.,including fiial testing and preparation for operation.

310 Manufacture (DNV-OS-E402): Making of articles ormaterials, sometimes in larger volumes. In relation to divingsystems, refers to activities for the production of pressure ves-sels, distribution panels and other components, performed un-der contracts from one or more contractors.311 Operations @h ase): The phase when the diving systemis being used for the purpose for which it was designed.312 Risk (DNV-OS-E402): The qualitative or quantitativelikelihood of an accident or unplanned event occurring, con-sidered in conjunction with the potential consequences of sucha failure. In quantitative terms, risk is the quantified probabil-ity of a defined failure mode times its quantified consequence.313 Risk reduction measures: Those measures taken to re-duce the risks to the operation of the diving system and to thehealth and safety of personnel associated with it or in its vicin-ity 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 safetyb) preventionc) detectiond) controle) mitigationf) emergency response

314 Safety objectives: The safety goals for the construction,operation and decommissioning of the diving system includingacceptance criteria for the level ofrisk acceptable to the owner.315 Statement o compliance: A statement or report signedby a qualified party affirming that, at the time of assessment,the defined phase, or collection of activities, met the require-ments stated by the owner.316 Verification (DNV-OS-E402): An examination to con-firm that an activity, a product or a service is in accordancewith specified requirements.

Guidance note:The examination shall be based on information, which can beproved true, based on facts obtained through observation, meas-urement, test or other means.See also Certijcation.

C. Normative ReferencesC 100 Offshore Service Specifications101 The latest revision of the following documents apply:I Table C1 Offshore Service SpecificationsReference I TitleDNV-OSS-1O1 I Rules for Classificationof Offshore Drilling andI upp port Units IC 200 Offshore Standards

201 The latest revision of the following documents apply:


--```,`,`,,, ,`,,```,```` ,``,`-`-`,,`,,`,`,,`---


9/74


l iN 73X- I , -I iiid -3:1997 199Xl iN- 1964- : I O 0 0l iN I9hX :IO01l iN 10104

I Table C2 Offshore Standards IPresstire reptiliiiors Ih r tisc with iiiediciilpiisesTriiiisporiiiblepiis cyliiiders (pa r i I :1999,Periodic Iiispeciioii iiiid iesiiiip olSeiiiiilesspiis cyliiidersMeiiillic Prodticis - Types oliiispeciioiidoctiiiiciiis. IS0 10474:199 Steel iiiidsteel nrod tic is -- I iisneciioii doc timeiii s

piii.1 1:IOOl o r pari 3:IoOo)ReferenceDNV-OS-A101DNV-OS-D201DNV-OS-D202DNV-OS-D301DNV-OS-E402C 300 Recommended practices301 The latest revision of the following documents apply:

TitleSafety Principles and ArrangementsElectrical Systems and EquipmentInstrumentation and Telecommunicationsys-temsFire ProtectionDivinn Svstems

Table C3 Recommended practicesReference I TitleDNV-RP-A201 I Standard Documentation Tvues

EN IS0 11120: 1999

C 400 Rules401 The latest revision of the following documents apply:

Gas cylinders - Refillable seamless steeltubes for compressed gas transport, of watercapacity between 150 1and 3000 1 Designconstruction and testing (IS0 11120:1999):

I Table C4 Rules

ReferenceASME VI11 Div. 1ASME

TitleDNV Rules for Classification of ShipsDNV Rules for Liftinn Auuliances

TitleBoiler and Pressure Vessel Code

C 500The latest revision of the following documents apply:

Certification notes and Classification notes

(EmpSr)C 600 GuidelinesThe latest revision of the following documents apply:(EmpSr)C 700 Other normative references701 The latest revision of the following documents apply:Table C5 Other normative references I

ASME PVHO-1-1997edition (or latest)edition (or latest)ASME PVHO-2-2002

ASTM G93-96

Safety Standard for Pressure Vessels forHuman OccupancySafety Standard for Pressure Vessels forHuman Occupancy in Service Guidelinesfor PVHO Acrylic Windows.Standard Practice for Cleaning Methodsand Cleanliness Levels for Materials andEquipment Used in Oxygen-EnrichedEnvi-ronmentsCodes for hoses

cepts andRelated Definitions, 1991,BritishStandards Institute. London.BS 5355 Specification for filling ratios and devel-oped pressures for liquefiable and perma-nent gases.

EN 13445EN 4501 1

I Unfired pressure vesselsI General Criteria for Certification BodiesOperating Product Certification, 1998, Eu-ropean Committee for Standardization,Brussels.Weldinn - Basic weld ioint details in steelN 1708-111999

IMO ResolutionA.831(19)IMO ResolutionA.69217) baric Evacuation Svstems. 1991.

Code of Safety for Diving Systems, 1995,Guidelines and Specifications for Hyper-

6 June 1994

IMO resolution A.468 Code on noise levels onboard ships.(XII)E C N0.79-10 International Electro technical Commis-sions Publication No.79-10. and IMOWODU) Code chapter 6,Ergonomic Principles in the Design ofWork Systemsguidance on the selection and use of quality

IS 0 6385-1981IS 0 9000 I systems, andI guidance on developing qualitv manuals.S0 10013 I I I I -IS 0 10 380. BS6501 I Flexible metallic hosesIS 0 10474 Steel and Steel Products - Inspection Docu-ments E N 10204Metallic Products - TvuesIII of Inspection DocumentsI Petroleum and natural gas industries De-S0 13628-5 sign and operation of subsea productionsystems Part 5: Subsea control umbili-calsPD5500:2000SAE J 5 17, DIN EN853.856.857

Specification for Ud ired Fusion WeldedPressure VesselsRubber Hoses and Hose Assemblies

Guidance note:The latest revision of the DNV documents may be found in thepublication list at the DNV website www.dnv.com.For other sources see DNV OSS-305 appendix C.---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---


--```,

`,

`,,,

`,

`,,

```,

`````,

``,

`-`-`,,

`,,

`,

`,,

`---


10/74


ADD,,,

D. Informative ReferencesD 100 General

= Cross section area= Nominal outside diameter.= Greatest measured inside or outside diameter

QRA I Quantitative Risk AnalysisROV IRemotelv Ouerated Vehicle

E

fo

I UTS I Ultimate Tensile Strength

= Youngs Modulus= Ovality, D m a x D m i nD

WPS I Welding Procedure SpecificationYS I Yield Stress

HHsID

lable I> I I nforniativc. c.fc.rc.nc.c.*

= Wave height= Significant wave height= Nominal inside diameter

Refe rence

APIASMEASTM

Title I

American Petroleum InstituteAmerican Society of Mechanical EngineersAmerican Societv for Testing and Materials

BS*C-MnCE

British Standard (Note: Now PD Public document)Carbon ManganeseConformit Eurouene (Eurouean Conformitv)

DNVDPEBWFMEA

Det Norske VentasDynamic PositioningElectronic Beam WeldedFailure Mode Effect Analvsis

IMIS0KVLBW

Installation ManualInternational Organisation for StandardisationCharpy valueLaser Beam Welded

MPQTMPSMSANACE

Manufacturing Procedure Qualification TestManufacturing Procedure SpecificationManufacturing Survey ArrangementNational Association of Corrosion Ennineers

QQAoc

QualificationQuality AssuranceOualitv Control

A Guide to Hazard and Operability Studies,1979, Chemical Industries AssociationLimited, London.DNV Rules for Certification of Diving Sys-tems, 1988Manned Underwater OperationsTransportable Gas Cylinders - CylinderValves - Specification and Type TestingTransportable Gas Cylinders - Compatibili-ty of Cylinder and Valve Materials withGas Contents -Part 3: Autogenous IgnitionTest in Oxygen AtmosphereGas Welding Equipment - Pressure Regula-tors for Gas Cylinders used in Welding,Cutting and Allied Processes up to 300 barAccommodation of crews

E200 Symbols201 Latin characters

NORSOK Standardu-1O0EN 849: 1996EN IS0 11114-311997 IDA.. I = I Smallest measured inside or outside diameter I

IDi I = I D-2tn,, =Nominal internal diameterEN IS 0 2503:1998

IL 0 Convention 133,1970(NFPA) CodesSOLAS 1974

National Fire Protection Agency(International Convention for the Safetv of Out of roundness,O,, - Dmin

Maximum design temperatureTmin Minimum design temperature

Life at Sea).

E. Abbreviations and Symbols (Guidance)E 100 Abbreviations

I AUT I Automatic Ultrasonic Testinn I

I CRA I Corrosion Resistant Allov I

I HAZ I Heat Affected ZoneHAZOPHFW I High Freauencv WeldingI Hazard and Operability Study

I HPIC I Hvdronen Pressure Induced Crackinn I

I NDE INon-Destructive ExaminationNDTNPD I Norwegian Petroleum DirectorateI (Non-DestructiveTesting) see NDE

IP I Production I

I OP I Oualitv Plan I


--```,`,`,,,`,`,,```,`````,``,`-`-`,,`,,`,`,,`---


11/74


SECTION 2SERVICE OVERVIEW AND REQUIREMENTS

A. GeneralA 100 Objectives101 The objectives of this section are to provide:a) an overview of certification and verification activities re-lating to diving systemsb) details of DNVs certification and verification services fordiving systemsc) information on the classification process in general.

B. Background (Informative)B 100 Introduction101 Certification of diving systems has been carried out his-torically with a scope and depth of involvement specified bythe certif$ng body, with the same end result ~ a certificate.The depth of involvement, or level of certification, has not al-ways been easily detected from the certificate. In addition, theowner may select closer levels of certification involvement toensure that the certifiing bodys scope is well defined.

Guidance note:The purpose of the diving system certificates and class notationis to codirm that the diving system, as installed and ready foruse, is in a condition that complies with the technical require-ments. It does not cod irm that the schedule or cost of the projecthas been according to plan.Strictly, the class notation covers only the as-installed conditionof the diving system and, hence, the conditions affecting this areof particular interest. However, the certification process requiresthat all the prior phases are verified and that any temporary phas-es are in accordance with DNV-OS-E402 and has an acceptablerisk level.The certification or verification may, in the described scenarios,provide a statement of compliance at the completion of each ofthe projects stages. Class notation will be provided when thediving system is ready for operation. and only when DNVsscope of work is the certification of the complete proiect.


B 200 Justifications for certification or classification201 Some national authorities require certification of divingsystems and their components and have appointed specific or-ganisations qualified for this work.202 Some national authorities may have detailed require-ments for the certification activity, while others leave the def-inition of the necessary work-up to the appointed organisation.Other national authorities require specific documents to beverified and approved by them, some hold the owner responsi-ble for the verification activities and others again, may nothave any specific requirements.

Guidance note:The term statutory certification s sometimesused to distinguishcertification performed by appointment of a national authorityfrom that performed on the general recognition of the certifyingbody.---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

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

the public that the diving system complies with the relevantstandard.204 Additionally, it is good business practice to subject crit-ical work to a third-party check, as this reduces the possibilityof errors remaining undetected. Third-party certification willensure that the verifier has an independent view and perspec-tive when performing this activity. Furthermore, it will avoidthe situation where errors could be overlooked by engineersbecause of their closeness to the work with the diving system.205 Certification can also be used as a part of the project riskmanagement. As certification increases confidence that thediving system complies with the requirements placed on it bynational authorities and the owner, it follows that the risk offailure of the diving system decreases due to independent cer-tification. Thus, certification contributes to project risk man-agement and risk reduction.

C. Overview on Verification, Certification andClassificationC 100 General101 Applying these principles of verification for distinctsmaller or larger parts of the diving system or selected phasesmay not result in a certificate. Therefore, instead of using theterm certification, the term verification is used to describe thisservice.102 Verification to DNV-OS-E402, to other standards or toclients specifications may use this OSS as a communicationplatform and for the preparation of project-specific scope ofworktables in the same manner as for certification.C 200 Purpose of verification201 Verification constitutes a systematic and independentexamination of the various phases in the life of a diving systemto determine whether it has (or continues to have) sufficient in-tegrity for its purpose.C 300 Verification as a complementary activity301 Verification shall be complementary to routine design,construction and operations activities und not u substitute f o rthem. Therefore, although verification will take into accountthe work, and the assurance of that work, carried out by theowner and its contractors, it is inevitable that it will duplicatesome work that has been carried out previously by other partiesinvolved in the diving system.C 400 Project management401 Certification should be planned in close co-operationwith the owner and each of its contractors, to provide a scopeof work that is tailor-made to the schedule of each productionprocess or activity, i.e. to make the verification activities, sur-veillance and hold points, an integrated activity.

Guidance note:Some contractors have approved quality control systems andquality control departments, with competent personnel to per-form, for example, inspection at manufacturing plants and spe-cialist material engineers competent to review and verify theperformance of manufacturers.Reference is made to Manufacturing Survey Arrangements de-scribed in DNV Rules for Classification of Ships Pt.1 Ch.1 Sec.3A.In that situation DNVs certification activities can be confined to:


--```,`,`,,,`,`,,```,`````,``,`-`-`,,`,,`,`,,`---


12/74


a)b)c)

reviewing the competence of the Contractors personnelauditing their working methods and their performance ofthat workreviewing the documents produced by them.

C 500 Certification to DNV-OS-E402501 The certification process described in this OSS is tailor-made for the certification of diving systems built in accordancewith the offshore standard - DNV-OS-E402 Diving Systems.502 Where DNV-OS-E402 refers to certification, survey, ac-ceptance, agreement or qualification this shall be by DNV. Alist of these instances is provided in Appendix B.C 600 Certification to other standards601 DNV certification to internationally recognised stand-ards shall follow the principles described in this OSS.602 Where other standards and external criteria are used, theexact terms of reference and documents to be issued shall beagreed at the beginning of the project and formally defiied inthe contract. The use of other standards does not allow for a re-duction of the quality management requirements as describedin the safety philosophy of DNV-OS-E402.603 DNV reserves the right to call for additional require-ments to cover issues essential to the certification and classifi-cation process if not covered by the standards in question.604 It is normally not acceptable to mix standards due to thepossible differences in safety philosophies.

Guidance note:Most standards are a coherent collection of requirements for allthe relevant aspects of a system. These aspects are normally ad-justed to give an overall acceptable safety level. To pick require-ments from different standards can then easily result inunpredictable (low) levels of safety. However, in some instancesa mixture of standards need to be applied where certain aspectsare not covered in one standard alone. (e.g. ASME PVHO-1 ap-plies to acrylic windows regardless of the design code for thepressure vessel.---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

C 700 Classification701 DNV Classification is described in Sec.3 D300, inDNV-OSS-10 1 Rules for Classification of Offshore Drillingand Support Units and in DNV Rules for Ships.

D. Service ProcessD 100 General principles101 The process of DNVs certification and verification ofdiving systems is based on distinct project phases and the rec-ognition of key milestones. Verification performed by DNV aspart of the certification process, progresses through theseproject phases and includes all aspects of the project.102 The certification process follows the project phases:Pre-certification (optional).a) conceptual design.Certijication:a) detail designb) construction.c) manufacturing of diving system components and assem-blies

d) manufacturing of diving systems.Classificationa) installationb) project completion with issue of classification certificateincluding DSV class notation.Maintenance o Class Notation:a) operations, maintenance, repair and surveys. See alsoDNV-OSS-101 Rules for Classification of OffshoreDrilling and Support Units, and DNV Rules for ShipsPt.7 Ch.2 Sec.4 C.

Guidance note:Where projects or other standards use other terms, these can beused provided they are well defined and agreed.Appendix E includes some generic descriptions of typical sub-phases. This may be used as guidance when agreeing the contentor completeness of a sub-phase.

D 200 Scopes of work201 Generic scopes of work for certification and verificationare given in the tables in this section.202 The classification will cover the following matters:a) the vessels ability to keep its position during diving oper-ationsb) the hull structural arrangements related to the diving sys-tem, e.g. moon pool (launching and recovery well for bell)c) the arrangement and installation of the diving systemd) the complete diving system with respect to safety andfunctioninge) stability and floatability.D 300 Overall safety objective301 The owner should define an overall safety objective cov-ering all phases of the diving system from design to operation.The safety objective should address the main safety goals aswell as establishing acceptance criteria for the level of risk ac-ceptable to the owner. Depending on the diving operation andits location the risk could be measured in terms of human inju-ries as well as environmental, political and economic conse-quences.D 400 Assessment of risk401 A systematic review should be carried out to identiSland evaluate the probabilities and consequences of failures inthe diving system. The extent of the review shall reflect thecriticality of the diving system, the planned operation and pre-vious experience with similar diving systems. This reviewshall identiSl the risk to the operation of the diving system andto the health and safety of personnel associated with it or in itsvicinity.The scope should be agreed upon.402 Once the risks have been identified their extent can bereduced to a level as low as reasonably practicable by means ofone or both of:a) reduction in the probability of failureb) mitigation of the consequences of failure.The result of the systematic review of these risks is measuredagainst the safety objectives.D 500501

Technical innovation and contractor experienceThe degree of technical innovation in the diving system


--```,`,`,,, ,`,,```,```` ,``,`-`-`,,`,, ,`,,`---


13/74


shall be considered. Risks to the diving operation are likely tobe greater for a diving system with a high degree of technicalinnovation than with a diving system designed, manufacturedand installed to well-known criteria in well-known vessels.502 Similarly, the degree of risk to the diving system shouldbe considered where contractors are inexperienced or the workschedule is tight.503 Factors to be considered include:a) degree of difficulty in achieving technical requirementsb) knowledge of similar diving systemsc) knowledge of contractors general system experienced) knowledge of contractors experience in similar work.D 600 Quality management systems601 Adequate quality management systems shall be imple-mented to ensure that gross errors in the work for diving sys-tem design, construction and operations are limited.

Guidance note:By adequate it is meant that the quality management systemshould reflect the complexity of the work and the ability of theworkers to implement the system. The functionality of the quali-ty management system depends on the ability to take a sober ap-proach, and amve at a system that does not appear alienating.


602 Factors to be considered when evaluating the adequacyof the quality management system include:whether or not an IS 0 9000 or equivalent certified systemis in placeresults from external auditsresults from internal auditsexperience with contractors previous workproject work-force familiarity with the quality manage-ment system, e.g. has there been a rapid expansion of thework force or are all parties of a joint venture familiar withthe same system.Guidance note:Most organisations have quality management systems certifiedby an accredited third party certification body. However, whenbusiness increases, they expand their staff quickly by taking oncontract personnel often for a fixed period or for the duration ofa particular contract.This influx of new personnel can lead to problems of control ofboth the whole organisation and of particular projects. Qualityproblems may then occur, as these new personnel have no de-tailed knowledge of the organisations business methods, itsethos or its working procedures.


E. nformation FlowE 100 Communication lines101 Communication lines are illustrated in Figure 1 Commu-nication Lines. Which lines that are open for communicationdepends on the particular contractual agreements.102 For instances where DNV (31d party) does not have acontract with the owner ( St arty), DNV recommends stronglythat the owner, through his contract with the 2nd arty, securesa direct communication line from DNV to owner and vice ver-sa.

Guidance note:The recommendation springs from DNVs experience withprojects where communications difficulties between the partieshave jeopardised the issue of certificates.---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

2 n d

4 Dm 1constructor \Figure 1Communication Lines

E 200 Obligations201 In order to achieve the purpose and benefits of certifica-tion the involved parties shall be mutually obliged to share andact upon all relevant information pertaining to the certificationscope.202 The owner shall be obliged to:

inform DNV about the basis for selecting the safety objec-tives and the investigations and assumptions made in thiscontextgive DNV full access to all information concerning thecertification scope for the diving system and ensure thatclauses to this effect are included in contracts for partiesacting on behalf of the owner and parties providing prod-ucts, processes and services covered by the certificationscope,ensure that DNV is involved in the handling of deviationsfrom specified requirements within the certification scopeact upon information provided by DNV with respect toevents or circumstances that may jeopardise the projectand or the purpose and benefit of certificationensure that the Safety objective established for the projectis known and pursued by parties acting on behalf of theowner and parties providing products, processes and serv-ices covered by the certification scope.

203a) perform their assigned tasks in accordance with the safetyobjectives established for the diving projectb) provide the owner and DNV with all relevant informationpertaining to the certification scope.204 DNV will be obliged to:a) inform the owner if, in the opinion of DNV, the basis forselecting the safety objectives or the assumptions made inthis respect are found to be in error or assessed incorrectlyb) inform the owner of events or circumstances that, in theopinion of DNV, may jeopardise the project and or the

purpose and benefit of certificationc) effectively perform all certification work and adjust thelevel of involvement according to the actual performanceof parties providing products, processes and services cov-ered by the certification scope.

Second parties shall be obliged to:


--```,`,`,,, ,`,,```,```` ,``,`-`-`,,`,,`,`,,`---


14/74


E 300 Notification301 It is assumed that the owner make an assessment of therequired safety objectives for a project before preparing tenderdocuments for design and construction activities. The ownercan then spec@ this in Invitations to Tender. This will givecontractors clear guidance and reference when estimating theextent and cost of efforts associated with certification activi-ties.

Guidance note:It is recommended that a concept evaluation of the project bedone by DNV, to identify the major issues, which need to beagreed at the start of the project.---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e--.

F. Pre-certificationF 100101 Verification need not only be performed as part of acomplete certification of a diving system but can be stand-alone service for all or part of a project.102 Verification during the conceptual and or feasibilitystudies of a project is not a prerequisite for certification. How-ever, verification of the early stages of a project can reduce theneed for verification during the design and construction phas-es.103 It is advisable to combine the design verification duringpre-certification with additional review of the operational as-pects of the support vessel and the project schedule.

Verification during conceptual design

G. Certification and ClassificationG100 General101 Design and construction aspects, relevant to diving sys-tem safety and integrity, will be covered by certification.102 Verification describes the individual activities undertak-en by DNV at the various stages of the design, construction andoperation of the diving system.103 Certification describes the totality of verification activi-ties leading up to the issue of a DNV certificate.104 The following parts and systems are covered by DNVscertification and verification of a complete diving system (fordefinitions, see Sec. 1 D and DNV-OS-E402 Sec. 1 D):

chambersbellpermanent gas storage containersother pressure vesselslife support systemselectrical systems and installationsfiie protection, detection and extinctionlaunch and recovery systemsmain umbilicalpipes, valves and fittingsbooster pumps and compressorshelium reclaim plant (if installed)gas analysersgas mixing unitsgas absorbers

p) breathing systemsq) depth gaugesr) sanitary systems) communication systemt)G 200 Certification201 Upon request from the manufacturer, DNV certificatesmay be issued for a diving system which has been designed,built, equipped, marked, inspected and tested in compliancewith the DNV-OSS-305, DNV-OS-E402 and or applicablecodes, standards or regulations. These will be stated in the DataSheet for Diving System (Form 20.201a).202 The operational limitations and basic assumptions andconditions for use will also be stated in the Data Sheet for Div-ing System.203 The Societys commission related to the certification ofmaterials and components (CMC) is completed when the cer-tificates are forwarded to the manufacturer.204 For environmental control systems a copy of the ap-proved test program completed with the final set points will beendorsed by the Surveyor, and shall eventually be kept availa-ble onboard.G 300 Classification301 Upon class request, the Societys surveyor may inspectthe installation of the system and attend the final necessarytests.302 When a diving system certified by the Society has beeninstalled on a ship or a mobile offshore platform covered by theSocietys classification, an additional class notation DSV (seeG303) may be included in the ships or the platforms class,provided the following requirements are met:

arrangement for hyperbaric rescue of divers in saturation.

The requirements for stability and floatability are as givenin DNV Rules for Classification of Ships Pt.5 Ch.7 Sec.3D and Sec.4 B for additional class notation SF, as far asthese requirements are applicable.The ship or the platform (semi-submersible) shall be ar-ranged for keeping its position safely during diving opera-tions. The DYNPOS Class Notation AUTR is required asa minimum level of redundancy for diving in conjunctionwith DP operations. However, contracts may stipulate ahigher level of redundancy for certain operations, such ashyperbaric welding.Cranes and other lifting appliances for diving bell han-dling systems shall be certified in compliance with the So -cietys rules for Certification of Lifting Appliances(separate publication), as far as applicable, and the addi-tional requirements for handling systems given in DNV-OS-E402 Sec.7.The installation and testing requirements given in DNVRules for Classification of Ships or DNV-OSS-101 Rulesfor Classification of Offshore Drilling and Support Unitsshall have been complied with in addition to the testing re-quirements given in DNV-OS-E402 Sec.2 J, which alsoThe diving system will be subjected to periodical surveysas specified in the respective rules for classification, in or-der to ensure that the system is properly maintained ingood condition for retention of class. See also DNV-OSS-101 Rules for Classification of Offshore Drilling andSupport Units Ch.3 and DNV Rules for Ships Pt.7 Ch.2Sec.4C.

apply.

303 Depending on the operational restrictions, diving sys-tems may obtain one of the class notations given in Table G1


--```,`,`,,, ,`,,```,```` ,``,`-`-`,,`,,`,`,,`---


15/74


ka,


16/74


will follow Table G3. I e ) Full iime iiiieiidaiicc duriiig MPQT, it 'applicable, o r lirsi day IproductionSurveillance during manufacturing and fabrication activitiesable G3 Scone of work for verification of design IVeriJcation activity

Review of the design process bya) review of desim aualitv management documentation

f) Attendance during testing, to ensure, based on spot checks, thatthe delivered products have been produced in accordance withthe manufacturing specificationReview ofjnal documentationb) audit of desim aualitv mananement svstem I

Review of speci$cations for design byc) review of the design basis with emphasis on the location on andinterface with the support vessel. Evaluation of the design cn -teriaGuidance note:Components and materials may be ordered with certificates ofvarying degrees of independent 3rd party verification (e.g. 3.1Caccording to EN 10204). This can be integrated in the overall cer-tification activities, so as not to duplicate work.

---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e--.Review of design reports and drawings byd) review of the main documentation to ensure that the main con-ditions have been accounted for in design, that the governingconditions are identified, and that the chosen design philoso-phies are in accordance with specified codes and standards

evaluation of the main methods used and spot checks of the in-put data and the calculation resultsdetail review of main design reports

e)f)

Table G5 Scope of work for attendance during installationI Verificationactivitv IIReview of he installation arocess Ia)b)Review of nstallationmocedures

Review of installation management systemsAudit of the quality management systemPerformin nder>endentDaralle1 calculations bv Ig) simplified independent analysis and calculation(s) performed

bv suot checksh) advanced ndependent analysis and calculation(s)performed bysuot checks I c) Suot check of Installation Manual. IM) Id) For critical operations (identified from the FMEA and HAZOPI studies) review the IMeview o f aecifications for construction and oaeration bv Ii) spot check of critical aspectsj ) review of main specificationsk) review of underlving suecifications

Review of quali$cation processe)f)

For critical operations, review the qualification of the IMFull time attendance during tests. if auulicable. or at start-uu

I Surveillance durinp installation activities IG 600 Verification during Construction601 Verification during construction is either carried out bymeans of full time attendance, audits, inspection or spot checksof the work, as appropriate, in sufficient detail to ensure thatthe specified requirements of the diving system will beachieved.602 Verification of these activities relates not only to thecontractor's work but also to the monitoring of this work car-ried out by others.603 During construction verification shall consist of one, ormore, of:a) reviewing the construction processb) reviewing construction proceduresc) reviewing qualification processd) surveillance during construction activitiese) reviewing final documentation.604 Definition of scope of work for certification of construc-tion shall follow Table G4 and for manufacturing and fabrica-tion, Table G5 and Table G6 for final testing and completion.

g)h)Review ofjnal documentationG700 Testing701 After completed installation, the diving system is to betested in compliance with an approved test program in pres-ence of the surveyor. The required tests are stated in DNV-OS-E402 Sec.2 J300.

Attendance during start up of each sub-system installation.Full time attendance during trials and associated visit- based at-tendance during testing.

Table G6 Scope of work for attendance during final testing foroperation, including as-built survey and project completionVerijcationactivityReview ofproceduresa) Review of the procedures for system tests to ensure that the testprocedure will test the diving system in accordance with the de-si m reauirementsSurveillance during testing and completion activitiesb) Attendance during pressure testing.c)d)Review of inal documentation

Full time attendance during pipe testing and audit based attend-ance during cleaning, and drying.Full time attendance during as-built surveying and system test-ingTable G4 Scope of work for attendance during manufacturing

and fabrication of componentsVeriJcation activityReview o f he manufacturing and fabrication mocess

I e) Check of as-built documentationI f) Review of as-built documentation

I a) Review of manufacturinn mananement svstems II b) Audit of the quality management system H. Certification Documents

H 100101 Certification documents are normally issued by DNV.The purpose of these documents is to provide documentationthat objective evidence has been presented to c o n f i he div-ing system's components conformity with the requirementsand to document the work performed by DNV.

Purpose of Certification DocumentsI ' cedures for confirmat& of compliance with the makfactui ingsnecificatianReview of quali$cation process

d) Review the Manufacturing Procedure Suecification, M P S ) ,I ' Manufacturing ProcedureQualificationLTestW Q T ) , if appli-cableDETNORSKE ERITASpyright Det Norske Veritasvided by IHS under license with DNV Licensee=BG EXPLORATION AND PRODUCTION INDIA LTD/5962943001


--```,`,`,,,`,`,,```,`````,``,`-`-`,,`,,`,`,,`---


17/74


Installation report andData Sheet

-

102 Final certification documents, consisting of statementsand certificates, are formal documents in which DNV statesthat a particular aspect of the work (a product or service) hasbeen completed in conformance with the requirements for cer-tification specified or requested for the diving system by theowner.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 formof progress reporting showing completion of limited certifica-tion activities for various issues, items or phases of the project.104 The certification documents are as follows and the hier-archy is shown in Figure 2 below:a) class notation with appendixb) installation report with data sheetc) product certificatesd) material certificatese) verification reportf) intermediate documentsg) audit reportsh) verification commentsi) visit reports and survey reports.

(Classification certificate)Class notation with

Appendix

CertificatesF5aterial certificatesFigure 2Document Hierarchy for CertificationH 200 Certification Documents Provided201 The types of documents issued by DNV for the differentstages of the certification process are illustrated in Table H1.

DNV-OSS-305 Rules for Certification and Verification f Diving System:

Letter

re - Certificatior

ConstructionIocuments for individual phaseApproval or natural part thereof:Certificates of materials and components, surveyreports and Data Sheetletter

ClassificationIertification

Operation

Maintenance ofClassificationH 300 Validity of Certification Documents H 400 Classification Certificate (Class Notation)301 Certification documents are, in principle, documentsconfirming that an examination has been carried out, and arevalid only at the date of issue.302 However, for some certificates a specified period of va-lidiq, and maintenance conditions for ensuring this validity,may be given in the certificate. e.g. statutory and main Classcertificates.

401 A DSV Class notation will be issued in the Classifica-tion Certificate as a formal statement confirming that the div-ing system has been completed in accordance with specifiedrequirements.402 An appendix to the Class certificate and a Data Sheet fordiving system will support the Class Notation.403 The Class notation will only be issued when all relevantactivities have been satisfactorily completed. Outstanding is-sues will prevent the issue of the Class notation unless deemed


--```,

`,

`,,,

`,

`,,

```,

`````,

``,

`-`-`,,

`,,

`,

`,,

`---


18/74


of lesser importance, in which case Conditions of Class will beissued.404 Accompanying documents to the class notation will con-tain:a) diving system description and item number, in a data sheet(DNV Form 20.201a) accompanying the certificates andreportsb) operational limitations and conditions of use for which thediving system is intendedc) codes and standards with which the diving system hasbeen found to comply.405 An officer at DNV H0vik will sign the full-term classi-fication certificate, whereas the local officers will sign the un-derlying certificates. A local DNV officer will sign the interimclass certificate.406 The DNV H0vik office will file the as-built documenta-tion including the main certificates and drawings. Underlyingcertificates are filed at the local station.407 Examples of some documents are shown in Appendix D.H 500 Verification Comments501 Reviews of documents will be reported using plan ap-proval letters of response. These letters may give details to theclient of aspects that DNV:a) considers do not meet the specified requirementsb) does not have enough information to make a decisionc) offers advice based on its own experience.Only in the first two instances does DNV expect a responsefrom the owner or its contractors.502 An example of a typical plan approval letter of responseis shown in Appendix D.H 600 Audit Report601 Audit reports are issued to confirm that a companysquality management system has been reviewed to confirmcompliance (or not) with the nominated standard and projectrequirements. In addition, the audit reports confirm compli-ance with the documented procedures and that these proce-dures are effective.602 Audit reports will contain information such as whether:a) the company has a documented quality systemb) this quality system been certified by an accredited certifi-cation body for the product (or service) in questionc) the quality system covers the following quality assurance

elements adequately for the product:i) organisationii) authority and responsibilityiii) job descriptions for key personsiv) internal quality auditsv) documentation change controlvi) job instructions and proceduresvii) non-conformance and corrective action.

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

PWHT

v) inspection statusvi) final inspection.

e) the companys facilities are, in general, considered ade-quate for the scope of supplyf) a quality plan been prepared for the order concernedg) the purchaser or their appointed inspection agency areplanned to attend the worksh) there are any problem areas identified.H 700701 Visit reports are documentation and recording of attend-ance activities by DNV.

Guidance note:Visit reports are called by different names. e.g. Survey Report.

Suwey Reports and Visit Reports

---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 iden-tify clearly the product or service that has been examined, theoperating conditions or specifications to which it has been ex-amined and the conclusion reached by DNV.703 The survey report will be printed on the relevant formand will contain as much information as possible in accordancewith the standard headings in the form. In addition, the reportnumber will be shown.

I. Use of Quality Management SystemsI100 General101 The assurance of diving system integrity requires thatgross errors during design, construction and operation be min-imised. The likelihood of gross errors shall be reduced in a sys-tematic manner by the operation of a quality managementsystem adequate for the work being carried out.102 Quality management systems frequently are document-ed at three levels:a) the quality manual and related procedures document howthe organisation, as a whole, manages the quality of all itsproducts and servicesb) the quality plan documents the specific procedures relatedto a particular projectc) the inspection and test plan documents how the qualitycontrol activities for a particular project shall be carriedout and recorded.I2 00 Quality Plans201 The basic function of a quality plan is as an aid in themanagement of a project. In an organisation with many qualityprocedures for a variety of functions the quality plan statesthose that are applicable to that particular project. The qualityplan acts as a route map through the complexities of manage-ment of the project and highlights those activities relevant toquality management.202 The project quality plan normally consists of two parts;firstly, a narrative description of the means of controlling theproject, and secondly, a tabular description of the inspectionsand tests to be carried out during the work.203 The quality plan should address:a) organisational details of the projectb) authorities and responsibilities of key personnelc) interfaces between, the client, contractors, sub-contractorsand third parties


--```,`,`,,,`,`,,```,`````,``,`-`-`,,

`,,`,`,,`---


19/74


d) quality assurance activities placed on sub-contractorse) cross references to existing company procedures.204 The narrative part of the quality plan should include adescription of:a) the applicable standardsb) project organisation and responsibilitiesc) review of the contractual requirementsd) project planning and progress reportinge) procedures for such activities as design control, purchas-ing, construction, installation, commissioning, interfacecontrol and auditing.205 Additionally, the narrative part of the plan should de-scribe the documentation requirements It should be specified:a) what documents are requiredb) at what stage these documents are requiredc) who is responsible for preparing the documentsd) relevant parties to whom documents are submittede) how any necessary approvals are acquiredf) who has originals and who has copiesg) if copies have to be certified copiesh) the length of time documents are to be retained and bywhom.I3 00 Inspection and Test Plans301 The tabular description of the inspections and tests to becarried out during the work is frequently known as the inspec-tion and test plan.302 The following items should be checked for inclusionwithin the inspection and test plan:a) each inspection and test point and its relative location inthe production cycle should be shownb) the characteristics to be inspected and tested at each pointshould be identifiedc) the use of sub-contractors should be indicated and detailsof how the verification of sub-contractors quality shall becarried out should be shownd) hold points established by the constructor, the operator ora third party, where witness or review of the selected in-spection or test is required, should be shown.

Review of Quality Management Programme40 0401 The contractors quality manual will be reviewed forcompliance with IS0 9001 or 9002 as appropriate. The con-tractors operations should be audited to establish compliancewith the documented system.402 If the contractor has a quality system certified by an ac-credited third party certification body, this may be taken as ev-idence of a satisfactory quality systemprovided the certificateis relevant to the contractorS scope o work for the system.However, the last two years periodical audit reports shall bereviewed to identiSl if any recurring non-conformities havebeen revealed.403 Any weaknesses revealed during this audit, or review ofperiodical audit reports, shall be considered when planning thecontractor monitoring activities.404 Surveillance of the continuing acceptability of the con-tractors quality management system is carried out by observ-ing a selection of audits carried out by the contractor as part ofits internal audit system. The audits to be observed should beselected 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 ac-tivities undertaken during their scope of work for the projectwill be reviewed and accepted, if adequate.

J. Maintenanceof Class NotationJ100 General101 During the operations phase, verification in order tomaintain the Class notation is outlined in DNV-OSS-101Rules for Classification of Offshore Drilling and SupportUnits and DNV Rules for Ships.J 200201 A prerequisite for the retention of validity of certificatesin the operations phase is that an in-service contract has beenestablished between the owner, or owners representative, andDNV.202 The period of validity of a Class certificate subject to ex-amination by DNV will not exceed 5 years. After that periodthe Class certificate may be renewed, provided a satisfactoryrenewal survey has been carried out.203 Some certificates having a period of validity will have aspecific area to be signed by DNV annually showing satisfac-tory completion of the annual assessments required so as tocontinue the certificates validity. These certificates will be-come invalid if the signatures are not present.For diving systems this applies to the statutory certificate IMODiving System Safety Certificate.J 300 Assumptions301 Classification is based on the assumption that:a) the diving systems shall be properly maintained and oper-ated by competent personnelb) that a pre-check procedure is followed to ensure that allsystems and components function properly before start ofeach operationc) that current, wave and wind conditions shall be within thedesign limits for the various systems.302 Diving systems in operation will retain their class nota-tion provided that:a) the diving system is operated within the specified limita-tionsb) the owner provides adequate documentation from inspec-tion and maintenance activitiesc) the owner maintains any installed systems for conditionmonitoring and carries out condition evaluations as appli-cabled) information about damage, repairs and modifications,which may affect the certification, is promptly reported toDNVe) Conditions of Class issued by DNV are acted upon withinthe specified time.303 It is also assumed that whenever a significant compo-nent of the diving system is repaired or replaced it is re-testedor certified in accordance with the Service Specification. A re-port will be issued after any modification or repair of the div-ing system.304 Diving systems that are temporarily out of service shallbe subject to periodical inspections if the class notation is to beretained. The inspection requirements will be agreed upon be-tween the owner and DNV.

Validity of Certification Documents

DETNORSK VERITASpyright Det Norske Veritasvided by IHS under license with DNV Licensee=BG EXPLORATION AND PRODUCTION INDIA LTD/5962943001Not for Resale, 10/18/2006 23:47:49 MDTreproduction or networking permitted without license from IHS

--```,

`,

`,,,

`,

`,,

```,

`````,

``,

`-`-`,,

`,,

`,

`,,

`

---


20/74

Offshore Service Specification DNV-OSS-305, January 2004Page20 - Sec.2

305 The class notation can be withdrawn if the owner failscomply with the operational procedures for the diving sys-tem accepted by DNVcarry out the regular in-service inspection and mainte-nance programme according to the procedures accepted byDNVcomply with any conditions of class issued by DNV.

306 Additionally, the class notation can be withdrawn if thediving system:a) is damaged, or is suspected of having been damaged, in amanner likely to impair its safety or integrityb) demonstrates signs of deterioration likely to impair itssafety or integrityc) is subjected to any modifications or repairs, which can im-pair its safety or integrityd) is considered demobilised.307 If the situation leading to withdrawal of the Class nota-tion no longer exists, the Notation may be reinstated. However,the diving system will be subject to special assessment or mon-itoring prior to and or following the reinstating of the ClassNotation.J 400 Verification During Operation401 Verification during operation is carried out by periodicalor occasional surveys, of the system in sufficient detail to en-sure that the specified requirements of the system continue tobe achieved.402 Assessment of these activities will relate to the owners,as well as any contractors, work.403 Periodical assessments will be carried out to confirmthat any deterioration of the diving system is within acceptablelimits and that the diving system continues to be fit for its in-tended purpose.

Guidance note:Periodic surveys are normally done on an annual basis, with re-newal surveys done every fifth year. For DNV class, intermedi-ate surveys are done at the second or third annual survey. (SeeDNV-OSS-1O1 Rules for Classification of Offshore Drillingand Support Units Ch.3 Sec.4 and DNV Rules for Classificationof 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 confirmthat any damage, deterioration or modification to the divingsystem does not render the diving system unsuitable for its in-tended purpose.

J 500 Obligations501 To maintain a Certificate during the operational phase,DNV shall be kept informed about the condition of the divingsystem. DNV shall have full access to information concerningoperation, inspection and maintenance activities.502 The owner shall not@ DNV immediately if any of theevents as listed below occur, and DNV will review the need forcarrying out assessments and surveys as deemed necessary if:the diving system is damaged, or is suspected of havingbeen damaged in a manner likely to impair its safety, reli-ability, strength or integrity

the diving system demonstrates signs of deterioration like-ly to impair its safety, reliability, strength or integritythe diving system is subjected to any alterations, repairs orreplacements.

503 DNV shall be:a) informed when inspections required to retain the Class no-tation are to be carried outb) given timely notification of occasions when such parts ofthe diving system, as are not normally accessible for in-spection, may be examinedc) given timely advance notification of any diving system re-pair activities.504 Once a Condition of Class is issued formally, the valid-ity of the Class is conditional on successful completion of therequired action within the specified time.505 The owner shall notiSl DNV upon the fulfilment of anon-conformance correction, enabling DNV to carry out a ver-ification of the work.506 DNV is responsible for, in a timely manner:a) carrying out the agreed assessmentsb) issuing all reports and any necessary non-conformance re-port.J 600 Non-conformance report-Condition of Class601 Where, after assessment of the diving system during theoperations phase, DNV does not consider that items examinedmeet the specified requirements, non-conformance reports areissued in the form of Conditions of Class.602 Narrative reports containing all relevant informationwill be issued. This information shall enable precise identifica-tion of the area of DNVs concern.603 No corrective action will be proposed by DNV, as it isthe owners responsibility to do so.


--```,

`,

`,,,

`,

`,,

```,

`````,

``

,`-`-`,,

`,,

`,

`,,

`---


21/74

Offshore Service Specification DNV-OSS-305, January 2004AppA - Page21

3333

APPENDIX AINSTANCES WHEREREQUIRE CERTIFICATIONDNV-OSS-305 (AND DNV-OS-E402)

C 202 Welders - Approved weldersC 203 NDE operators - Approved NDE operatorsE 1O1 Manufacturers of gas cylinders - Approved manufacturerF 301 Manufacturers of acrvlic cast material - Auuroved manufacturer bv ASME

A. General tificates (W) and Test Report (TR)).102 The table is subdivided into:A 100 Introduction

101 The Tables B to E give the instances where DNV-OS- a) designE402 requires certification. In those cases where DNV is pro-viding a certificate, this shall be a DNV Product Certificate(NV).(See DNV Rules for Ships Pt.1 Ch.1 Sec.3 A900 regard-ing definitions of DNV Product Certificates (NV), Works Cer-b) materials and componentsd) operations.

and

3333

B. Design and Manufacturers

B 108 Windows in PVHO - NV Product CertificateC 102 Material grades - TR Test ReportsCC

103104

Materials for main pressure retaining parts - NV Product CertificateStainless steel Darts welded to non-stainless uressure vessel - TR Test Reuort

Table B1 Instances of Certification required in DNV-OS-E402 - Design and ManufacturersSection I Letter I Hundred I DescriDtion

3333

1 3 1 C I 201 IManufacturers of uressure vessels - Auuroved manufacturer

E 101 Gas cylinders - NV Product CertificateEEE

101102400

Gas bags for Helium reclaim systems - (TR) Test ReportMaterials for Gas cylinders - NV Product Certificate or W CertificateProduction tests of pas cvlinders - TR Test Reuorts

3(3)4

I Table B2 Instances of Certification required in DNV-OSS-305 - Design and Manufacturers

F 401 Cast materials for windows - W Certificate(F)B (501)201

(Windows in PVHO - NV Certificate) as for Sec.3 B108Pressure relief devices and shut-off valves - W Works certificates

Section I Letter I Hundred I Description

4444

C. Materials and Components

CC 301 BIBS Masks - (W) Works certificateD 104 Components for oxygen systems - (TR) Test ReportE

101 Manifolds - ON) Works Certificate and (TR) Test Report.

101 Pressure relief valves - W) Works certificates and TR) Test Reuort*

Table C1 Instances of Certification required in DNV-OS-E402 -Materials and ComponentsSection I Letter I Hundred I Description2 1 E I 301 I Certified comuonents for svstems used in Hazardous Zone 2. - Suecial consideration

4444

1 3 1 B I 105 IPressure vessels for human occuuancv (PVHO) - NV Product Certificate

E 103 Filters - ON) Works certificateE 105 Shut-off valves - ON) Works certificatesEE 201301 Overpressure alarm - ON) Works certificate and (TR) Test ReportNon-return valves. flow-fuses and valves - W) Works certificates and TR) Test Reuorts

1 3 1 F I 201 I Materials for acrylic windows - TR Test Reports

4 1 E I 3034 1 E I 304

I Safety valves and Overpressure alarm - (W) Works certificate and (TR) Test ReportI Chamber mounted valves for water - (W) Works certificate and (TR) Test Report


--```,

`,

`,,,

`,

`,,

```,

`````,

``,

`-`-`,,

`,

,`,

`,,

`---


22/74

Offshore Service Specification DNV-OSS-305, January 2004Page22 - AppA

4444

Table C1 Instances of Certification required in DNV-OS-E402 - Materials and Components (Continued)IHeaters for Bells and chambers - W) Works Certificate and TR) Test Reuort1 F I -F

F 200 Temperature controls - ON) Works certificateF 401 Noise reduction - (TR) Test ReportG

101 Temperature indicator - (W) Works certificate and (TR) Test Report

200 Control. alarm and safetv svstems in CCBS - W) Works certificates and TR) Test Reuorts.

5555

1 4 1 H I 100 I Closed Circuit Breathing System (CCBS) - (NV) Product Certificate and (TR) Test Reports

BB 601 Electrical switchboards - NV Product CertificateCC

305 Fire Proof Cables - Type Approval and (W) Works CertificateCables - Type Approval or (W) Works certificate with (TR) Test ReportElectrical uenetrators for uressure vessels - NV Product Certificate and TR Test Reuort

501502

4 1 I I 102/103 I Lights - ON) Works certificates4 1 I I 203 I Monitors in wet bell - (TR) Test Reuorts

5566666

~I1 5 1 B I - IElectrical motors - W) Works certificate under 100 kW - NV) Product Certificate over 1OOkW

DEB 102 Non-hazardous materials - (TR) Test ReportBCDD

202100/200

100200

A-60 Fire division including bulkhead penetrators - DNV Type Approval CertificatesFire detection and alarm systems - Type Approval and (NV) Product certificateFixed fire extinguishing system - Various certificates and Type Approval depending on system. ref. DNVRules for Ships Pt.4 Ch.10. - Sprinklers require Type Approval and ON) Works CertificatesManually operated fire fighting device for inner area - Type Approval and or (TR) Test Report an dor ON)Works certificate deuendinn on device.

6777

EAA - Winches and power packs - (NV) Product CertificatesC

201101

Portable fire extinguishers- Type Approval ref. DNV Rules for Ships Pt.4 Ch.10Launch and recovery system certified as lifting appliance - NV Product CertificateRoues - NV) Product certificates with TR) Test Reuorts01

Firemans outfit - Various certification requirements depending on Statutory regulations.I I E I lo l I W) Works Certificates as a minimum with TR) Test Reuorts.

788

CAB

203402-

Materials for structural members in launch and recovery systems - NV Product CertificateMaterials and components in oxygen systems - (TR) Test Report and ON) Works CertificatesPiping (NV) Product or ON) Works Certificate (see Ship Rules Pt.4 Ch.6)

1 7 1 C I 202 I Blocks, Sheaves and shackles - (NV) Product certificates

888

B 301 Oxygen shock test (TR) Test reportBC - Valves and Pressure remilators - W) Works Certificates

203 Flexible hose assemblies (with couplings) - Type Approval Certificate and Works CertificateON)1 8 1 B I 101 I Welding WPQ, WPS and welders

8889( 9 )9

D - Fittings and Pipe connections - (W) Works CertificatesE - Compressors - (NV) Product CertificateF - Umbilical - (NV) Product Certificate-

(402)1801

Hyperbaric Evacuation System and Hyperbaric Evacuation Unit - StatemenVCertificateof conformance de-pending on statutory engagement. - (TR) Test Report(Chamber for Hyperbaric Evacuation Unit) as for Sec.3 B105Launch and Recovery system (HES) - Type Approval and (TR) Test Report(A)A

I Table C2 Instances of Certification required in DNV-OSS-305 - Materials and ComDonentsSection I Letter I Hundred I Description

DETNORSKE ERITASpyright Det Norske Veritasvided by IHS under license with DNV Licensee=BG EXPL