chintan virani pressure vessel

8/2/2019 CHINTAN VIRANI Pressure Vessel

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CONTROLLED DOCUMENT

Title: PRESSURE VESSEL SPECIFICATION

Controlled Ref No: W1000SM3124353 Revision: 1

Name Date

Prepared by: Garry Ralls 2 7 / 1 1 / 0 8

Approved by: M Hamblin 2 7 / 1 1 / 0 8

Custodian: Godfrey Howard 2 7 / 1 1 / 0 8

Concurrence(Agreement that must be obtained if an item is prepared external to, but impacts, a department or division. If

concurrence is required, it must be noted within the body of the item).

1.

2.

3.

Woodside Management System Sub-processes MUST obtain concurrence endorsement from BopCom. The date of the BopCommeeting where endorsement is granted should be indicated below.

BopCom Endorsement Meeting date when endorsement granted:

REVISION HISTORY

Revision Description Date Prepared by Approved by

0 Doc number change from A3000SM025 29/09/2006 D Gomes G Howard

1 Revised to allow use on external website 11/2008 G Ralls M Hamblin

INFORMATION SECURITYCONFIDENTIALITY CLASSIFICATION(Check one box only)

REVIEW STATUS(Check one box only) PREPARED(Check one box only)

Unclassified(Shared without Restrictions)

Review on/by(29/09/2011)

By WEL

Restricted(Freely Sharedwithin Woodside and

Associated Companies)

Review Not Required For WELUnder PO/Contract No:

Confidential(Shared With Selected Personnel)

Most Confidential(Strict Need-to-Know Basis)

This document is protected by copyright. No part of this document may be reproduced, adapted, transmitted, or stored in any form byany process (electronic or otherwise) without the specific written consent of Woodside. All rights are reserved.

Controlled Ref No: W1000SM3124353 Revision: 1 Native file DRIMS No: 3124353 Page 1 of 40

Uncontrolled when printed. Refer to electronic version for most up to date information.


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Title: Pressure Vessel Specification




OPERATIONS / PROJECTS USE ONLY

Operating Facility:

Key TAG Nos:

DOCUMENT DISTRIBUTION

Copy No.Full Name / External Organisation Name (if applicable)

(Show Username (WOPID) to differentiate between persons with identicalnames).

Hard CopyElectronic

Notification

00 WEL Document Control

01 TW Doc Control

02 CAJV Doc Control

03 Gilbert Habets(10063)

04 Peter Nalepa(3019)

05 Mike Hamblin(3227)

06 Pluto Eng Coordinator(2404)

07 Sunrise Eng Manager(7521)

08 Browse Eng Coordinator(4350)

09 LNG Project Development Eng Manager(8927)

10 Clive Saxton(3606)

11 Tony Glesson TW ENG Manager

12 Iain Denholm CAJV Eng Manager


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PREFACE

Woodside Energy Ltd. (WEL) has developed a suite of Engineering and Technical Standards andGuidelines. It is intended that these reflect the most suitable engineering practices for use on allnew WEL facilities as well as the modification of existing facilities. The application of the Standards

is mandatory. The application of Guidelines is to support the implementation of the Standards, andare considered best practice, but are not mandatory.

The Standards are based on the experience acquired by WEL personnel and contractors duringWELs involvement with the design, construction, operation and maintenance of WEL processingunits and facilities. Where appropriate, the Standards are based on or make reference to nationaland international standards and codes of practice.

The objective of this publication is to ensure the overall integrity of engineering design and toachieve maximum technical and economic benefits through the standardisation of engineering andtechnical practices.

The use by WEL contractors or manufacturers/suppliers of the Engineering and TechnicalStandards contained in this publication does not relieve them of any responsibility whatsoever forthe quality of design, materials and workmanship that they have been engaged to provide.

Where the standards to be used for a certain application are not provided for in this publication,WEL expects that the standards that are used will achieve the same level of integrity as reflected inthis publication. If WEL contractors or manufacturers/suppliers have any doubt as to the relevantstandard to use, then they must consult WEL, however they will remain responsible at all times forthe use of the most appropriate standard. Specific requirements may be added as an addendum tothese Standards and Guidelines for various projects. Project specific requirements must not departfrom the requirements of the Engineering and Technical Standards contained in this publication.Where changes or additions to these Standards are required, they must be raised as a deviation

and presented to the WEL Technical Authority for consideration.

WEL grants the right to use these Standards and Guidelines to WELs consultants, contractors andsuppliers who are contractually authorised to do so and to any tier of contractor to its consultants,contractors and suppliers who are contractually required to comply with them.

DISCLAIMER

WEL and its joint venture partners disclaim any liability of whatsoever nature for any damage(including injury or death) suffered by any company or person whomsoever as a result of or inconnection with the use, application or implementation of any standard, combination of standards

or any part thereof contained in this publication.


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TABLE OF CONTENTS

1. INTRODUCTION...................................................................................................71.1 Scope ................................................................................................................................ 71.2 Definitions.......................................................................................................................... 71.3 Abbreviations..................................................................................................................... 71.4 Units .................................................................................................................................. 81.5 Language .......................................................................................................................... 82. CODES, STANDARDS AND PROJECT SPECIFICATIONS................................82.1 Project / Company Standards ........................................................................................... 82.2 Shell Standard Drawings................................................................................................... 82.3 Codes and Standards........................................................................................................ 92.3.1 Australian Standards......................................................................................................... 92.3.2 ASME (American Society of Mechanical Engineers) ...................................................... 102.3.3 ASTM (American Society for Testing and Materials) ...................................................... 102.3.4 BSI (British Standards Institution) ................................................................................... 102.3.5 Welding Research Council.............................................................................................. 102.3.6 ISO .................................................................................................................................. 112.4 Order of Precedence....................................................................................................... 112.5 Vessels to be installed within Australia or Australian Territories ..................................... 112.6 Vessels to be installed outside Australia or Australian Territories................................... 123. HSEQ REQUIREMENTS ....................................................................................123.1 General............................................................................................................................ 123.2 Inspection and Testing .................................................................................................... 123.2.1 Non Destructive Testing.................................................................................................. 123.3 Quality Records............................................................................................................... 123.4 Material Certification & Traceability Requirements ......................................................... 133.4.1 Certification Requirements .............................................................................................. 133.4.2 Traceability Requirements............................................................................................... 133.5 Marking for Identification and Traceability....................................................................... 144. GENERAL REQUIREMENTS .............................................................................144.1 Scope of Work................................................................................................................. 144.2 Design Life ...................................................................................................................... 144.3 Transportation................................................................................................................. 144.4 Weight Control................................................................................................................. 145. TECHNICAL REQUIREMENTS..........................................................................145.1 General............................................................................................................................ 145.2 Materials.......................................................................................................................... 155.2.1 Carbon and Carbon-Manganese Steels.......................................................................... 155.2.2 Duplex Stainless Steels................................................................................................... 155.2.3 Clad Steel Vessels .......................................................................................................... 165.3 Non-Destructive Testing of Materials .............................................................................. 16


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5.4 Nozzle Loads................................................................................................................... 175.5 Specific Design Requirements ........................................................................................ 175.5.1 Design Loadings.............................................................................................................. 175.5.2 Acceptable Weld Joint Details......................................................................................... 175.5.3 Nozzles and Flanges....................................................................................................... 185.5.4 Attachment Loadings....................................................................................................... 195.5.5 Fixed Internals................................................................................................................. 205.5.6 Vessel Supports .............................................................................................................. 205.5.7 Bolting ............................................................................................................................. 205.5.8 Tolerances....................................................................................................................... 215.5.9 Corrosion Allowances...................................................................................................... 215.6 Electrical Requirements .................................................................................................. 215.6.1 Earth Bonding.................................................................................................................. 215.7 Lifting Attachments.......................................................................................................... 225.8 Fabrication and Manufacture........................................................................................... 225.8.1 General............................................................................................................................ 225.8.2 Forming ........................................................................................................................... 226. WELDING ...........................................................................................................236.1 Welding Procedures and Qualification............................................................................ 236.2 Qualification Testing of Welding Procedures for Duplex Stainless Steel ........................ 246.3 Qualification Testing of Welding Procedures for Clad Steel Vessels .............................. 246.4 Welder Qualifications ...................................................................................................... 246.5 Consumable Control........................................................................................................ 246.6 Production Welding ......................................................................................................... 256.6.1 General............................................................................................................................ 256.6.2 Clad Steel Vessels .......................................................................................................... 256.7 Post Weld Cleaning of Non-Ferritic Vessels ................................................................... 267. INSPECTION AND TEST....................................................................................267.1 Pressure Tests ................................................................................................................ 267.2 Non Destructive Examination.......................................................................................... 277.2.1 NDE Procedures ............................................................................................................. 277.2.2 NDE Personnel................................................................................................................ 277.2.3 NDE During Production................................................................................................... 277.2.4 Storage of Radiographs .................................................................................................. 277.3 Heat Treatment ............................................................................................................... 287.4 Cleaning of Vessels......................................................................................................... 288. NAMEPLATE......................................................................................................289. COATINGS AND EXTERNAL MARKING ..........................................................2810. SPARES AND SPECIAL TOOLS .......................................................................2910.1 Spares............................................................................................................................. 2910.2 Special Tools................................................................................................................... 3011. PACKAGING FOR TRANSPORT.......................................................................30


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12. DOCUMENTATION.............................................................................................31 13. APPENDICIES ....................................................................................................32APPENDIX A - ADDITIONAL REQUIREMENTS FOR VESSELS CONSTRUCTED OFMATERIAL WITH CORROSION RESISTANT CLADDING..............................................32APPENDIX D - VESSEL NAMEPLATE DETAILS ........................................................39


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1. INTRODUCTION

1.1 Scope

This specification describes the minimum general/functional and technical requirementsfor the design, fabrication, inspection, testing and supply of Pressure Vessels.

1.2 Definitions

The following definitions are used for the purpose of this specification. All other standarddefinitions are provided in the contract document.

Approved

Means accepted by Company, such acceptance shall

not relieve the Supplier of its obligations under the

Contract

CompanyWoodside Energy Limited (WEL) or any agency,

consultant or contractor acting on behalf of WEL

ContractThe agreement between Company and Supplier to

perform the work

Supplier

If applicable, the company or organisation responsible

for the supply of the equipment and services specified

in this document

Inspector Person acting on behalf of the Company

Shall / Must / Will Mandatory requirement

Should Recommended course of action

May / Can One acceptable course of action

1.3 Abbreviations

AS Australian Standard

ASTM American Society for Testing and Materials

BOD Basis of Design

DEP (Shell) Design Engineering Practice

DN Diameter Nominal

EDRL Engineering Document Requirements List

FEED Front End Engineering Design

HSE Health, Safety and Environment

HSEQ Health, Safety, Environment and Quality

ISO International Organisation for Standardisation

ITP Inspection and Test Plan


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MDR Manufacturers Data Report

MT Magnetic Particle Testing

NDT Non-Destructive Testing

PT Dye Penetrant Testing

PWHT Post Weld Heat Treatment

RT Radiographic Testing

SDS Supplier Document Schedule

UT Ultrasonic Testing

1.4 Units

Units shall be in accordance with referenced Standard AS1000 except that pressure shallbe expressed as MegaPascals (gauge) (MPa(g)).

1.5 LanguageAll documentation and correspondence shall be in the English language.

2. CODES, STANDARDS AND PROJECT SPECIFICATIONS

The equipment shall be designed and tested in accordance with the requirements of thisspecification, the relevant data sheets, the following Project / Company specifications, theITT/Purchase Order (PO) documentation and the latest editions of the following codes andstandards as applicable at time of placement of Contract.

2.1 Project / Company Standards

Document No. Document Title

W1000SM030 Supply of Bolts, Stud Bolts and Nuts for Offshore Use

W1000SM3132441 Thermal and Acoustic Insulation

A3000SQ160371HSEQ Requirements Supply of Products andServices

A3000SG158829Supplier Documentation and Data RequirementsSpecification

W9000SG005 Standard Specification for Forwarding, Packaging,Marking and Invoicing of Overseas Shipments

W1000SM002 Protective Coatings Standard

DRIMS# 2315552 Generic Pressure Vessel Datasheet

2.2 Shell Standard Drawings


S 10.010 Vortex Breakers
http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=3132562http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=4743407http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=4743407http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=4743407http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=4743407http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=4743407http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=4743407http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=4743407http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=4743407http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=3205381http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=4743407http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=4743407http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=3205381http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=4743407http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=4743407http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=4743407http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=4743407http://supplierinfo.woodside.com.au/Link/?Loc=LO&Lg=N&dmsn=3132562


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S 10.016Flanges for Non-pressure Pipe Connections InsideVessels

S 10.046 Stilling Well for Displacement Type Level Instruments

S 10.070 Davit for ANS or BS Blind Flanges

S 10.101 Equipment Nozzles

S 10.103Typical Details of Bush-Lined, Overlay Welded and CladSteel Nozzles NOTE Bush-Lined Nozzles are notpermitted for this project

S 20.001 Skirts Cylindrical and Conical

S 20.004Anchor Bolt Ring or Lugs and Base Plate for Columns,Vertical Vessels and Steel Stacks

S 22.002 Saddles for Horizontal Vessels

S 68.004Earthing Boss for Steel Structures, Tanks and Vessels -NOTE All Stainless Steel shall be 316 minimum.

2.3 Codes and Standards

2.3.1 Australian Standards


AS 1000 Metric System of Units

AS 1171Methods of Magnetic Particle Testing of FerromagneticProducts and Components

AS 1170.2 Structural Design Actions - Wind Actions

AS 1210 Pressure Vessels

AS 1710Non-Destructive Testing Ultrasonic Testing of Carbonand Low Alloy Steel Plate Test Methods and QualityClassification

AS 1791 Chromate Conversion Coatings Zinc and Cadmium

AS 1816 Metallic Materials - Brinnel Hardness Tests

AS 1817 Metallic Materials - Vickers Hardness Test

AS 1897 Electroplated Coatings on Threaded Components

AS 2207Non-Destructive Testing Ultrasonic Testing of FusionWelded Joints in Carbon & Low Alloy Steels

AS 3752Welding Methods for determination of the diffusiblehydrogen content of ferritic weld metal produced by arcwelding

AS 3920.1Assurance of Product Quality Pressure EquipmentManufacture

AS 3992Boilers and Pressure Vessels - Welding and BrazingQualification

AS 4037 Boilers and Pressure Vessels - Examination and Testing

AS 4343 Pressure Equipment Hazard Levels




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AS 4458 Pressure Equipment - Manufacture

2.3.2 ASME (American Society of Mechanical Engineers)


ASME B1.1 Unified Screw Threads

ASME B16.5 Steel Pipe Flanges and Flanged Fittings

ASME B16.20Metallic Gaskets for Pipe Flanges Ring Joint, SpiralWound and Jacketed

ASME B16.47 Large Diameter Steel Flanges (Series A)

ASME Sect VBoiler and Pressure Vessel Code NondestructiveExamination

ASME Sect VIIIBoiler and Pressure Vessel Code - Rules forConstruction of Pressure Vessels

2.3.3 ASTM (American Society for Testing and Materials)


ASTM A264Standard Specification for Stainless Chromium-Nickel Steel-Clad Plate

ASTM A325Standard Specification for Structural Bolts, Steel, HeatTreated, 120/105 ksi Minimum Tensile Strength

ASTM A578Standard Specification for Straight-Beam UltrasonicExamination of Plain and Clad Steel Plates for SpecialApplications

ASTM E562 Standard Test Method for Determining Volume Fraction bySystematic Manual Point Count

2.3.4 BSI (British Standards Institution)


PD 5500 Specification for Unfired Fusion Welded Pressure Vessels

EN 1043-1Destructive tests on welds in metallic materials - Hardnesstesting - Part 1: Hardness test on arc welded joints

EN 10160Ultrasonic testing of steel flat product of thickness equal orgreater then 6mm (reflection method)

EN 10204 Metallic Products Types of Inspection Documents

2.3.5 Welding Research Council


WRC 107Local Stresses in Spherical and Cylindrical Shells due toExternal Loadings

WRC 297Local Stresses in Cylindrical Shells due to ExternalLoadings on Nozzles Supplement to WRC Bulletin No.


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107

2.3.6 ISO


ISO 3690Welding and allied processes - Determination of hydrogencontent in ferritic steel arc weld metal

ISO 9001 Quality management systems - Requirements

ISO 9712Non-destructive testing - Qualification and certification ofpersonnel

2.4 Order of Precedence

In the case of conflict between this specification and other referenced documents, datasheets, codes and standards, the Supplier shall bring the matter to the Companysattention for clarification in writing. The order of precedence shall be as follows (highestfirst):

1. Applicable Legislation and Statutory Requirements (see 2.5 below).

2. Equipment Purchase Order.

3. Project Data Sheets.

4. This Specification including Appendices attached hereto.

5. Project Specifications and Drawings.

6. Referenced Woodside Offshore Engineering Standards (OES) and Shell Designand Engineering Practices (DEPs).

7. Australian Standards.

8. International Codes and Standards.

All deviations from the requirements of this specification, its attachments and thereferenced Codes and Standards shall be stated in the tender. In the absence of such astatement, Suppliers full compliance shall be assumed.

Compliance by the Supplier with the provisions of this specification does not relieve themof their responsibility to furnish equipment and accessories of a proper mechanical designsuited to meet the specified service conditions and/or local codes governing health andsafety.

2.5 Vessels to be installed within Australia or Australian Territories

Vessel to be installed within Australia or Australian Territories must be designed andfabricated to:1- AS1210 or,2- designed and fabricated to an equivalent code such as ASME VIII or PD 5500,provided the design is verified to AS1210 by an independent third party approved by theCompany


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2.6 Vessels to be installed outside Australia or Australian Territories

Vessels to be installed outside Australian or Australian Territories shall be design andfabricated to either AS1210 or a code as comparable to AS1210 approved by theCompany. The following codes are considered comparable:ASME VIIIPD5500

3. HSEQ REQUIREMENTS

3.1 General

The Supplier shall develop and implement HSEQ management systems for the workswhich shall meet the requirements of Company document No: A3000-SQ-160371.

Quality Assurance management systems shall be in accordance with AS/NZS ISO9001:2000.

Documents and data formats are defined in Company document No: A3000-SG-158829.

3.2 Inspection and Testing

The Supplier shall perform inspection and testing activities in accordance with therequirements of this specification and Company approved Inspection and Test Plan (ITP).The ITP shall be submitted to the Company for approval as defined in the EDRL attachedto the Material Requisition.

The Supplier shall provide Company access to Supplier/sub-suppliers premises at anytime.

3.2.1 Non Destructive Testing

NDT shall be carried out in accordance with the requirements of the relevant Code andwith this Specification.

The proposed extent of the NDT, governing procedures, techniques and acceptancecriteria shall be detailed on the Suppliers Inspection and Test Plan.

3.3 Quality Records

The Supplier shall generate quality records from the inspection and test activities listed inthis specification and in accordance with the approved inspection and test plan(s).Documents and drawings shall be submitted as agreed in the Suppliers SupplierDocument Schedule (SDS).

The records shall be compiled and reviewed by the Supplier following the completion ofeach inspection and test.

Quality Records to be included in the Manufacturer's Data Report (MDR) are nominated inthe EDRL contained within the Material Requisition. Those records not nominated forinclusion in the MDR shall be available for Company review throughout the contract periodand thereafter retained in accordance with industry standards. The MDR shall becompiled as inspection and testing progresses. Quality records requiring Companyreview and or endorsement shall be forwarded to the Company progressively throughoutthe contract period.


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Quality records requiring traceability as detailed in the Material Requisition shall bear anidentical marking to the item inspected or tested.

3.4 Material Certification & Traceability Requirements

3.4.1 Certification Requirements

Material Certification for the project shall be in accordance with EN 10204, MetallicProducts Types of Inspection Documents. The Certification Requirements definedwithin the Material Requisition are the minimum Certificate types for the specificcomponents.

3.4.2 Traceability Requirements

Two categories of traceability are utilised for the project, Full Traceability and PurchaseOrder Compliance. The required category for various pressure vessel components isdefined within the Material Requisition. The Supplier shall demonstrate the existence of,and compliance with, a formalised procedure which shall be used to ensure that thecorrect materials have been used and that the following requirements are met by theSupplier, manufacturer or vendor.Full TraceabilityThe Supplier shall maintain a traceability system which ensures that all materials usedcan be positively identified back to original manufacturers' certificates. As a minimum thisprocedure shall include the following actions:

Materials shall be checked on receipt against accompanying originalmanufacturers' certificates for compliance with specified requirements.

Material batch, specification and grade details shall be positively identified (bypermanent marking wherever possible) throughout manufacture.

Transfer of material identification shall be witnessed and documented by theSupplier's inspector.

Records of material location shall be maintained.

Before the application of the surface treatment a complete record of materiallocation shall be compiled for incorporation into the Manufacturing DataRecords.

Construction records shall contain material location records and originalmanufacturers' certificates.

As-built records shall be maintained.

Purchase Order ComplianceThe Supplier shall maintain a system that whereby auditing of the system can verifycompliance with purchase order requirements. As a minimum this system shall includethe following actions:

Materials shall be checked on receipt for compliance with purchase orderrequirements.

The Supplier shall, for materials that are issued with lot or batch traceablecertification (eg. welding consumables, etc.), maintain batch or lot segregationup to the point of use.


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3.5 Marking for Identification and Traceability

The Supplier shall mark items for identification and traceability in accordance with thefollowing requirements.

Markings to facilitate identification and traceability during processing shall bemaintained throughout the manufacture and fabrication stages. The Supplier

shall propose the method for identification marking during processing forCompany approval.

Markings covered in final assembly and/or coating shall be first transferred toas-built traceability quality records. The transfer of markings to traceabilityquality records may be subject to Company verification.

Markings to facilitate permanent identification and traceability shall be inaccordance with the Material Requisition and shall remain visible for the life ofthe item.

4. GENERAL REQUIREMENTS4.1 Scope of Work

Suppliers scope includes design calculations, drawings and documentation,provision of all materials, manufacture, inspection, non-destructive examination,trial assembly, testing, painting and delivery as defined in the MaterialRequisition.

The Supplier should draw upon their existing pre-engineered or standarddesigns as far as is practicable in order to satisfy the functional and technicalrequirements described within this specification and referenced documentation.

4.2 Design LifeThe pressure vessels shall be designed for continuous service at the conditions specifiedin the data sheets for a life of 30 years minimum unless otherwise specified in Datasheet.

4.3 Transportation

All equipment for the shall be specified and designed to withstand concurrent dynamicand static loading and transportation accelerations as defined within the referenced SiteData Sheet to supplied by the Company.

4.4 Weight Control

The Supplier shall exercise an active weight control system throughout the design and

fabrication of the Equipment. The Supplier shall submit an Equipment Weight Data Sheetwith weight and centre of gravity information.

5. TECHNICAL REQUIREMENTS

5.1 General

The Supplier shall comply with the Design Verification and Fabrication Inspectionrequirements of AS 3920.1. These requirements are based upon the vessel Hazard Levelas calculated in accordance with the requirements of AS 4343, and the status of theDesigners Quality System. This Hazard Level will be defined within the vessel data sheet.


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For columns with height to diameter ratio equal or greater than 10:1 the design shallconsider vibration and the critical wind velocity, the allowable deflection at the top shall notexceed 1/200th of the total height.

Supplier shall provide full service bolting and a service gasket for all manholes,

hand-holes, and other flanges for which a blind flange or mating flange is provided bySupplier.

Unless specifically defined otherwise on the relevant Data Sheet, all vessels operateunder steady state pressure and temperature.

Supplier shall design and provide bracing as required to protect the vessel and internalsduring shipment. Temporary welding to the vessel will not be permitted.

Supplier shall design, supply and install all lifting and tailing lugs, clips, attachments, andother members that are welded or attached to the outside or inside surface of the vesselor to the vessel supports. Wherever possible attachments shall be via full penetration butt

welds. If the datasheet indicates that the vessel will be in cyclic operation, all attachmentwelds shall be located as remote as practicable from gross structural discontinuities andother welds.

5.2 Materials

Material specification shall be as defined on the Vessel Data Sheet unless specific writtenapproval is obtained from the Company, any Supplier proposal for substitution of materialsshall include ASTM/ASME or AS designations and any relevant Code cases.

5.2.1 Carbon and Carbon-Manganese Steels

The following requirements apply:

Maximum Carbon content shall be 0.23% for plate and piping material.

Maximum Carbon content shall be 0.25% for forged material.

Maximum Niobium content shall be 0.05%.

Boron shall not be intentionally added to the steel and as a trace element it shallnot exceed 0.0005%.

The total content of micro-alloying elements shall be limited as follows:

(Nb+V+Ti) 0.08%

The Carbon Equivalent shall satisfy one of the following requirements:

Ceq = C + Mn/6 0.42 (may only be used where the material specificationdefines C and Mn only)

Ceq = C + Mn/6 +(Cr + Mo + V)/5 + (Cu + Ni)/15 0.43

If not already specified in the relevant material specification, the analysis forplate shall include: Cu, Ni, V, Mo, Nb, Ti, B.

5.2.2 Duplex Stainless Steels

All Duplex Stainless Steel (DSS) material shall have a minimum Nitrogen content of0.15%, regardless of the requirements of the material specification.


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All DSS material shall have a minimum pitting resistance equivalent number (PREN) of35, calculated as per the following equation:

PREN = wt % Cr + (3.3 x wt % Mo) + (16 x wt % N).

The volume fraction of ferrite and austenite shall be determined by the point counttechnique of ASTM E562 by examination of a micro section for each heat of DSS material.The ferrite content shall be in the range 40% to 60%.

5.2.3 Clad Steel Vessels

See Appendix A.

5.3 Non-Destructive Testing of Materials

Pressure containing components of 50mm and greater nominal thickness shall beultrasonically tested. Testing of plates shall be in accordance with EN10160 and platesshall meet Class S2E2 criteria. Testing of forgings shall be in accordance with the

techniques and acceptance criteria of ASME VIII-Div. 2 Section AM-203.2.

All forgings having a minimum design temperature of 20C or lower, and having a throughflange bolt hole thickness of 50mm and greater, shall be examined by Magnetic ParticleTesting (MT) or Dye Penetrant Testing (PT). MT and PT shall be carried out inaccordance with articles 7 & 25 and 6 & 24 of ASME V respectively.

Acceptance criteria for MT and PT testing of forgings shall be as follows:

Forging surfaces shall be free from tears or crack like indications longer than 1.5mm.

Other indications are acceptable if the maximum number and the maximum length of the

indications comply with the criteria shown in Table 1 below:

a) Any area containing an indication greater than 1.5mm shall be cleaned andexamined at 5 x magnification or ground and re-inspected as necessary toassure that it is not a crack or a tear. The length of any indication shall notexceed of the material thickness at the location of the indication. Thenumber of indications in 1000mm2 shall not exceed 3.

b) Randomly distributed indications of 1.5mm and less shall not be counted.

c) The distance separating two longitudinally aligned indications shall be notless than 4 times the length of the longer indication, however, when the total

length of the longitudinally aligned indications does not exceed the maximumlength permitted for a single indication, these aligned indications shall beconsidered as one indication and shall not be the cause for rejection.

d) The distance separating two linear indications not longitudinally aligned shallnot be less than the length of the longer indication.

Table 1 Acceptance Criteria for MT and PT of Forgings

Discontinuities and other indications outside the acceptance criteria of (6) above may beground out provided that the minimum required thickness is maintained, such instances


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will not be regarded as rejected items. Smooth surfaces shall be maintained whendressing such flaws and verification of complete flaw removal will be by either MT of PTtesting. In the case of linear indications the Supplier shall inform the Company as to theprobable cause and intended corrective actions to avoid recurrence of the defect.

Where clad material is specified on the vessel data sheet it shall comply with the

requirements of Appendix B Additional Requirements for Vessels Constructed of Materialwith Corrosion Resistant Cladding of this Specification.

5.4 Nozzle Loads

External loads to be accommodated by vessel nozzles are defined in Appendix B, theseloads need not be applied to manways.

The defined nozzle loads act concurrently.

The effect of nozzle loads on the fully corroded vessel shall be analysed in accordancewith WRC 107 and WRC 297, Finite Element Analysis, PD5500 or other equivalentmethod.

If other than nominal changes, such as nozzle or pad sizes, are required to any design toaccommodate the requirements then the Company may be consulted with regard toreducing the loads for specific nozzle(s). Any such load reductions can only be basedupon actual pipe stress or similar analysis.

5.5 Specific Design Requirements

5.5.1 Design Loadings

The vessels and their supports shall be designed to withstand the following:

Operating loads including wind and seismic loading as specified in the vesseldata sheet for maximum and normal operating liquid levels and for the emptycondition.

Hydrostatic test load for the fully flooded vessel using a contents specific gravityof 1 and including 75% of the derived wind force. Any additional loads shall bespecified in the vessel data sheet.

Blast Load: The blast load resistance requirements of each pressure vesselwhere required shall be specified on the vessel datasheet on a project specificbasis.

Other loads specified on the Vessel Datasheet.

5.5.2 Acceptable Weld Joint Details

For vessels designed and fabricated to AS1210, only the following figures of joint detailsare acceptable:

Fig. 3.5.1.5. (A) a, b, f, g, j, k, l, m and n.

Fig. 3.5.1.5. (B) a, b, c, e and f.

Fig. 3.5.1.5. (C) a, c, f, g and h for details (a) and (c) Backing Strips shall notbe used.


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For vessels designed and fabricated to codes other than AS1210, joint designs shall beselected to match as closely as possible those listed above (no permanent backing strips,no partial penetration butt welds).

Wherever possible attachment welds shall be full penetration butts. Where fillet welds arepermitted for internal and external attachments they shall be continuous welds.

Brazed and/or soldered joints shall not be used.

For attachment of Unstayed Flat Ends and Covers only the following joint arrangementsare acceptable:

Fig. 3.15.1 a, b-1, b-2, d, g, k, l, m and p.

The minimum distance between the edges of adjacent welds shall be 50mm or twice thethickness of the pressure part, whichever is greater. If this cannot be achieved in the caseof a pad attachment weld adjacent to a pressure part weld then the pad attachment shallcross the pressure part weld completely by 50mm or twice the pressure part thickness,

whichever is greater. Prior to welding the attachment the pressure part weld shall bedressed (to facilitate snug fitting of the attachment) and shall be subjected to NDE asspecified in AS 4037 Table 7.1.

Longitudinally welded joints shall not be located behind any plate or obstruction thatprevents inspection of the weld on the inside of the vessel. Circumferentially welded jointsshall clear any support ring welds by at least 25 mm.

5.5.3 Nozzles and Flanges

Nozzle flanges shall be in accordance with ASME B16.5. Flanges larger than the scopeof ASME B16.5 shall be in accordance with ASME B16.47 Series A.

Gaskets shall be 316 spiral wound graphite filled with inner and outer support rings unlessotherwise specified on the vessel data sheet.

Other standard flanges (e.g. API, DIN or JIS) can only be used will approval of theCompany unless otherwise specified on the vessel data sheet.

Non standard flanges (as defined above) shall be designed in accordance with AS1210and shall include a detailed FEA analysis of the joint with consideration of the gasket. Theanalysis must consider all loads likely to be seen during both testing and operation of thejoint.

Where vessel shell thickness is equal to or greater than 100mm, nozzles shall be of theforged saddle type.

Where the vessel datasheet specifies cyclic operation welded reinforcement pads are notpermitted. Any reinforcement shall be integral to the nozzle or vessel.

Studded pad type nozzles or manholes are not permitted.

Where nozzle reinforcing pads are permitted their thickness shall not exceed 40mm or thevessel wall thickness, whichever is smaller.


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Reinforcing pads of DN250 and smaller nozzles shall have one 6mm tell-tale hole. Padsfor nozzles greater than DN250 shall have two NPT tell-tale holes provided at 180spacing. All tell-tale holes shall be plugged with heavy grease after pneumatic test.

Minimum manway size shall be DN600 unless specifically shown otherwise on the vesseldata sheet.

Only the following joint arrangements are acceptable:

Figure 3.19.3 (A) a, b, c, d, e, f, g,

Fig. 3.19.3. (B) f, g, h, j, and k.

Fif. 3.19.3. (C) a, b, c (for non-cyclic service only)

Fig. 3.19.3. (D) a, b, c, e, f and g.

Fig. 3.19.9. b, c, d, e and f.

Screwed and socket welded connections are not permitted.

The reinforcing fillet of the nozzle attachment welds shall blend smoothly into the vesseland into the nozzle wall without any notch, sharp corner or undercut.

Nozzles shall have a 6mm radius applied to the inside edge.

Unless otherwise specified, flanges shall be weld neck or long weld neck type. Slip-ontype flanges or nozzles are not permitted.

Bolt holes shall straddle natural centre lines.

Davits shall be provided for all Manholes. Manholes shall be provided with handgripsinside the vessel and, when located more than one metre above the base of the vessel,shall have internal ladder rungs.

Handhole covers heavier than 15 kg shall be provided with either davits or hinges.

In addition to the requirements of AS1210, openings shall also comply with therequirements of ASME Section VIII Division 1 Appendix 1 Para 1-7 where size of openingexceeds the following:

For vessels 1520 mm inside diameter and less, the lesser of one-half the vessel diameteror 508 mm (nozzle inside diameter).

For vessels over 1520 mm inside diameter, the lesser of one-third the vessel diameter or1000 mm (nozzle inside diameter).

5.5.4 Attachment Loadings

External loads to be accommodated by vessel attachments are defined on the vessel datasheet.

The effect of attachment loads on the fully corroded vessel shall be analysed inaccordance with WRC 107 and WRC 297 or other detailed analysis such as FEA.Pressure shall be included where applicable.


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If changes are required to any design to accommodate external loads then the Companyshall be consulted with regard to reducing the loads for specific attachments.

All attachments shall be designed to provide easy access for maintenance and surfacecoating. Sharp corners shall be a 25mm minimum radius to prevent injury.

5.5.5 Fixed Internals

Fixed internal piping DN200 with no pressure differential shall be 3mm minimumthickness before corrosion allowance is added, fixed piping >DN200 shall be 6mmminimum before corrosion allowance is added.

Corrosion allowance on non-removable internal parts shall be the same as the vesselcorrosion allowance and shall be applied to all exposed surfaces, including attachmentfillet welds.

Bolting of internals shall be securely tightened a second nut or suitable adhesive.

All internal crevices where supports and fixed internals are welded to the shell or headsshall be seal welded to exclude process fluids. All seal welds shall have the specifiedcorrosion allowance added to the throat thickness.

5.5.6 Vessel Supports

For vessel support design 50% of the defined nozzle load for each nozzle shall beconsidered to be acting on the nozzles. Load directions shall be based upon the mostconservative support design, i.e. the worst case nozzle load summation. Nozzle loadsmay be assumed to be acting at the vessel Centre of Gravity for the purpose of supportdesign.

Support design shall take loading during hydrostatic testing into consideration.

Horizontal vessels shall be provided with two support saddles. One support shall allow forhorizontal thermal expansion, with the expansion slot length equal to twice the differentialexpansion between the maximum and minimum vessel design temperature plus the slotwidth plus 10mm.

For vertical vessels where a skirt support is used, the mean diameter of the skirt shallcoincide with the mean diameter of the vessel at the point of attachment.

For vertical vessels with a full skirt support, an access opening(s) shall be provided toallow access for inspection of the shell.

The vessel support(s) shall consider blast loads when specified on the vessel datasheet

5.5.7 Bolting

Flange bolting, stud bolts and nuts shall comply with the requirements of specificationW1000SM030.

Bolting materials shall be as specified on the relevant vessel data sheet.

Bolting for internals shall be ISO Metric Coarse thread form.


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External bolting for covers, blind flanges, and shell flanges shall be stud bolt, with 2 heavyhex nuts each.

For sizes 1" and greater, stud lengths shall be increased by a minimum of one nutthickness to allow the use of hydraulic tensioning equipment.

Nuts shall be impact tested to the same values as their corresponding studs.

5.5.8 Tolerances

See Appendix C.

5.5.9 Corrosion Allowances

The corrosion allowances for vessels shall be as shown in Table 2 below, unlessotherwise specified in the vessel datasheet.

Service Materials Corrosion allowance (mm)

General process Carbon steel

Low alloy steel

3

Non-corrosive or verymildly corrosive e.g.steam, dry compressedair, LPG, LNG, drynatural gas

Carbon steel

Fine-grain carbon steel

1

Fine grain carbon steel

3.5% Ni steel

9% Ni steel

1Service in which theoperating temperatureis always below 0C

Aluminium

Stainless steel

0

Stainless steel 0Removable internals

Removable internalsconsidered heavily-loaded(e.g. catalyst grids) in non-clad carbon steel or low alloy

steel vessels

50% of the corrosion allowancespecified for the vessel shall beapplied to each surface of theinternal

Table 2 Corrosion Allowances

5.6 Electrical Requirements

5.6.1 Earth Bonding

All vessels shall be provided with two earthing connections approximately 180 apart,welded to the skirt or two opposing support legs or one on each saddle support web.


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5.7 Lifting Attachments

Lifting attachments shall be designed and verified by qualified experienced engineersworking for a body that holds ISO 9001 certification. Should the design body not hold anISO 9001 certificate then the design shall be certified by a classification society, i.e.Lloyds, DNV etc. Design calculations shall also be submitted to the Company for review.The vessel fabricator shall be experienced and competent in the fabrication of such items

and shall hold an ISO 9001 certificate (or Company approved equivalent).Adequate lifting lugs/trunnions shall be provided to allow safe lifting of the vessels. Liftingpoint location shall be selected to ensure that lifting slings do not bear upon the vessel orits protective packing. The lug locations shall ensure that the vessel is "suspended level",within a tolerance of two percent of the total lifted vessel length.

100 % of the load for two, three and four point lifts shall be assumed to be taken by two ofthe slings.

Total lift loads for the design of lifting lugs/trunnions shall include the dead weight of thevessel plus the weight of packaging materials attached to the vessel during shipment.Lifting lugs/trunnions shall be designed using an impact factor of 2.0.

Lifting attachments shall be full penetration butt welded subjected to 100% NDE.

5.8 Fabrication and Manufacture

5.8.1 General

All plates shall be laid out so that there will be a minimum of welded seams.

Thermally cut edges shall be dressed back to the greater of 1mm or as per Table 5.1 ofAS4458 by machining or grinding.

Sheared edges between 11 and 25mm thickness shall be dressed back at least 3mm bymachining or grinding.

Weld metal shall not be used to build up the edges of plates that are too short or thosethat contain large cavities without prior approval of Company.Welded joints in horizontal vessels shall not interfere with supports.

All support saddles and bearing plates shall be continuously welded to the vessel andprovided with a 6mm tell tale vent hole which shall be plugged with heavy grease aftercoating.

Manufacture involving welding shall not be sublet to others without the prior written

approval of the Company.

5.8.2 Forming

Prior to the forming of stainless steel plates, the working surfaces of the rolls or tools shallbe completely free of ferrous chips, scale, dirt and other foreign materials.

All plates which have been cold rolled into cylinders with an internal diameter less than 20times the plate thickness or cold formed into dished ends or where the forming generatesmore than 5% extreme fibre strain shall be stress relieved.

Austenitic stainless steels shall be solution annealed after hot forming.


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Cold formed austenitic and duplex stainless steels, where extreme fibre strains exceed10%, shall be subjected to a post forming heat treatment.

Prior to fabrication the Supplier shall demonstrate by simulated heat treatment on testpieces that any component subject to heat treatment will retain the minimum specified

mechanical or other properties specified for the parent material after the heat treatment.This shall include all heat treatments such as normalising, quenching and/or temperingand post-weld heat treatment. All such tests shall be recorded and documented andincluded in the Manufacturers Data Report (MDR).Normalising shall be performed separately, not as part of the hot forming operation, andshall be recorded and documented on temperature recording chart.

Supplier shall submit, for Company review, detailed procedures for all proposed heattreatments.

Hot formed sections of shells and heads shall have the scale removed after forming by gritblasting or pickling.

6. WELDING

6.1 Welding Procedures and Qualification

Documentation of welding procedures and qualifications, including weld repair proceduresand qualifications, shall be submitted as follows:

Welding Procedure Specifications (WPSs) shall be submitted for review prior tothe start of Procedure Qualification. Submissions shall include a brief summary

of the application of each welding procedure with respect to the type of joint andmaterial, the qualified range of each welding parameter and a Weld Map whichidentifies the usage of the WPS. Upon Company approval of the WPS theSupplier may proceed with the Procedure Qualification.

Full Procedure Qualification Record Packages (PQRs), including runningsheets, NDT reports, mechanical test reports, PWHT chart if applicable, materialand consumable certificates, shall be submitted for review, and shall beapproved by the Company, prior to the start of any welding utilising the subjectWPS.

Pre-qualified procedures in accordance with AS3992 Section 2 may besubmitted for review.

Previously qualified procedures may be submitted for review.

For bare wire consumables (GTAW, GMAW, SAW), change of brand or productname is not considered an essential variable, provided the wire used forproduction welding is of the same classification (e.g. AWS A5.9: E316L) as thatused for procedure qualification.

For fluxed consumables (SMAW, FCAW, SAW flux), brand substitution is notpermitted, and both WPS and PQR running sheet must clearly specify brand,product name and classification of consumables. Change of brand, productname or classification requires re-qualification of the welding procedure.


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All fluxed consumables shall be capable of depositing low hydrogen (


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6.6 Production Welding

6.6.1 General

Care shall be taken to ensure that electrodes are struck either in the weld groove or ondummy material outside the proper material to be welded. If arc strikes occur outside theweld groove, the area shall be ground and subjected to non-destructive testing to ensure

that no cracks have resulted.

Temporary attachment welds on pressure retaining parts shall be removed to within 5 mmof the parent shell plate, then ground flush. The surface under such welds, and backingrings, which have been removed, shall be examined either by magnetic particle Inspection(MT) or dye-penetrant (PT) testing to ensure removal of unacceptable surfacediscontinuities.

Welds with defective areas shall have:

The defects removed.

Confirmation of defect removal by MT, or if the material is non ferritic, by dye-penetrant testing.

Repair welding using approved qualified procedures.

The excavation for the repair weld shall be a minimum of 75 mm length.

The finished weld repair shall, as a minimum, be subjected to the NDE requiredfor the original weld. In addition the surface shall be re-examined by MT or PTtesting.

If the repair involves serious alterations or repair to already repaired defects,approval of Company shall be obtained before proceeding with the repair.

All repair welding, inspection and testing shall be fully recorded and documented

Injurious defects identified during the course of fabrication either visually or byinspection techniques shall not be repaired unless authorised by the Company.

Welders causing an excessive proportion of unsound welds, e.g. 10% or greatershall be identified and diverted from this work.

Welding outside the confines of the fabrication shop shall not be permitted. In exceptionalcircumstances, such welding may be permitted after review of the reason and plannedarrangements to protect the welding from weather conditions. This shall include protectionfrom wind, rain and run-off.

All welding and NDT operations shall be completed before PWHT, pressure testing andcoating. To this end a hold point shall be designated on the ITP to provide assurance thatall welding, NDT and associated documentation are completed before these operations.NDT shall be repeated after hydrotest and/or PWHT as prescribed by AS 4037 Section 6.

6.6.2 Clad Steel Vessels

When depositing weld overlay to reinstate cladding at butt welds during vesselmanufacture, the following sequence and precautions shall be observed:


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After stripping back the cladding, all the edges of the parent material that areprepared for welding, the base material and cladding shall be subjected to dyepenetrant testing.

Any defect or remnant stainless steel detected shall be removed by grinding ormachining. Elimination of the defect or remnant stainless cladding shall beconfirmed by dye penetrant testing / copper sulphate swab.

The weld seam in the substrate shall be ground flush before depositing the weldoverlay.

Clad surfaces shall be protected at all times from physical damage and surfacecontamination from iron dust particles, weld spatter, etc.

Contaminated clad surfaces shall be chemically cleaned such that the finishrequired by the material specification, against which it was furnished, is restored.

Where attachments are to be welded to clad materials, the WPS to be used shallbe submitted to the Company for review and approval.

Fit-up devices shall not be welded to the cladding.

6.7 Post Weld Cleaning of Non-Ferritic Vessels

Non-ferritic (austenitic and duplex stainless steels, titanium, nickel alloy) shall be free ofiron contamination and oxide scale discolouration. After the completion of weldingoperations, all welds and discoloured or contaminated surfaces shall be pickled,passivated and thoroughly washed, all in accordance with a Company approvedprocedure.

7. INSPECTION AND TEST

7.1 Pressure TestsVessels shall be tested at the test pressure specified by the design Code for a period ofnot less than 30 minutes in the presence of the Company's Inspector. The testing shall becarried out in accordance with AS4037.

The test medium for hydrostatic testing shall be potable water unless otherwise approvedby the Company. For stainless steel or stainless steel clad vessels, the water shall notcontain chlorides in excess of 200ppm and a water analysis certificate shall be providedconfirming compliance.

External attachment pads shall be tested with soapy water and air at 100 kPag prior to

PWHT and the final hydrostatic test.

Horizontal vessels shall be tested on permanent support saddles and not otherwisesupported.

After hydrostatic test, all water shall be completely removed and vessel interior shall bethoroughly dried. The vessel shall be re-checked for distortion within the limits provided byAS4458.

After completion of the vessel pressure test, welding on the pressure-containing portion ofthe vessel is not permitted without prior approval by the Company.


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7.2 Non Destructive Examination

An NDE schedule shall be submitted to the Company prior to manufacture. The scheduleidentifies for each type of joint the method, sensitivity, amount and stage of test. (Anexample of reporting format is contained in AS 4037, Appendix E). The Principal shallreview the schedule to assess whether it provides optimum detection of imperfectionsrequiring assessment. The schedule shall include in-process NDE used to detect and

remove defects prior to post weld heat treatment.

7.2.1 NDE Procedures

NDE procedures shall be submitted to the Company for review before the commencementof any examination.

7.2.2 NDE Personnel

Non-destructive testing personnel shall be qualified in the technique being used, inaccordance with ISO 9712. Ultrasonic inspection shall be performed by a Level II or IIItechnician. A Level II or III technician is also required for interpretation of radiographs. AllNDE reports shall be reviewed and endorsed by a Level III technician.

7.2.3 NDE During Production

Where heads are to be formed from more than one plate, weld seams are to be fullytested AFTER forming.

Ultrasonic examination shall include weld scanning for transverse indications.

Visual inspection reports shall include observations on any evidence of oxidationassociated with stainless steel welding and the effectiveness of subsequent cleaningoperations.

All overlay deposited onto girth and seam welds shall be 100% dye penetrant tested after

welding to ensure that deposits are free from cracks and other unacceptableimperfections. The surface examination shall be repeated after PWHT, to demonstratethat cracks or other unacceptable imperfections have not developed.

The ferrite content of production overlay welds shall be tested using a ferrite scope. Theextent of testing shall be:

A minimum of five readings per course.

A minimum of five readings per head.

A minimum of one reading per nozzle.

The acceptance levels shall be 3-8% ferrite for PWHT vessels and 3-10% ferrite for non-PWHT vessels.

7.2.4 Storage of Radiographs

The NDT Contractor shall retain all exposed radiographic films on file for a period of fiveyears from the date of issue of the relevant test report.


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7.3 Heat Treatment

Supplier shall submit a detailed procedure for Company approval for all proposed PWHToperations, subsequent heat treatment shall be strictly in accordance with the approvedprocedure.

7.4 Cleaning of Vessels

Each vessel shall be thoroughly cleaned inside and outside and shall be free from grease,weld spatter, scale, slag, rust, and any other foreign matter.

8. NAMEPLATE

A 316L stainless steel nameplate shall be fixed to each vessel. The attachment shall beto a bracket which extends a minimum of 50mm beyond the specified insulation thickness.

In addition to Code requirements the nameplate shall provide the following data:

Client name.

Project name.

PO number.

Equipment title.

Equipment tag number.

Suppliers name.

Serial number.

Date of manufacture.

Appendix D shows further detail of nameplate and bracket dimensions and layout.

9. COATINGS AND EXTERNAL MARKING

Vessels that are specified as requiring external coating shall have all exterior surfacescoated, including the inside of skirts, the exterior of the bottom head for vertical vesselsand the inside of flange bolt holes.

Surface preparation and coating for both internal and external surfaces shall be inaccordance with the requirements of specification W1000SM002. The required coating

system will be defined upon the respective data sheet.

Painting shall be performed after completion of all testing.

Vessels shall be clearly identified by painting or dye stencilling the vessel equipmentnumber with lettering of minimum 200mm high in a conspicuous location on the shell,head, or support.

Vertical vessels shall be marked on the base and first 300mm of skirt, indicating the North,South, East, and West axes. The co-ordinates shall be indicated with a painted line and


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letter for each, according to the orientation shown on the vessel drawings. The markingsshall be made on the shell near the bottom tangent line if the vessel does not have a skirt.

Horizontal vessels shall have one head marked North, South, East, or West as shown onthe vessel drawings.

The colour of paint for marking and lettering shall conspicuously contrast with the vesselsurface.

The centre of gravity shall be included on vessel general arrangement drawings and shallbe marked on all vessels by painting a continuous 75mm wide circumferential stripe. Theletters C-G and shipping weight in tonnes shall be painted at 2 locations diametricallyopposite and adjacent to the stripe.

Vessels or vessel parts that have been subjected to PWHT shall be clearly marked"POSTWELD HEAT TREATED - DO NOT FLAME CUT OR WELD THIS VESSEL." Theabove requirements shall be clearly marked on the vessel exterior in block letters 75mmhigh in a contrasting colour and shall be clearly visible.

Clad vessels shall be clearly marked with type and thickness of cladding provided, on thevessel exterior in block letters 75mm high in a contrasting colour and shall be clearlyvisible.

10. SPARES AND SPECIAL TOOLS

10.1 Spares

The Supplier shall provide the following items:

Two spare gaskets for all manholes, nozzles with blinds and internal flanges(where at least one of each pair of mating internal flanges has been provided bythe vessel Supplier).

10% spare studs and nuts (with a minimum quantity of 2 of each size) for allmanholes, nozzles with blinds and internal flanges (where at least one of eachpair of mating internal flanges has been provided by the vessel Supplier).

The Supplier shall provide a recommended list of the following spares:

Pre-commissioning, commissioning and start-up spares.

Recommended spares list for two years operation.

The Company shall agree pre-commissioning, commissioning, and start-up spares to beincluded in Purchase Order.

All spare parts furnished by the Supplier shall be clearly marked as Spare Parts,packaged separately and wrapped and packed to preserve items as new condition undernormal storage conditions. The same parts shall be properly tagged so that lateridentification as to their intended usage will be facilitated.

Packing lists shall be furnished complete and in detail so that parts can be handledwithout unpacking.


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10.2 Special Tools

The Supplier shall identify all necessary special tools required to perform routinemaintenance and any other recommended tools for specialised procedures. TheCompany shall agree all special tools which will be included in the Purchase Order.

11. PACKAGING FOR TRANSPORTUnless stated otherwise in the equipment data sheet, all equipment must be preservedand packaged suitable for 12 months outdoor storage in tropical marine conditions. Allequipment and materials shall be properly protected from damage for sea freight.

The Supplier shall comply with the general requirements of Company SpecificationW9000-SG-005 Standard Specification for Forwarding, Packaging, Marking and Invoicingof Shipments.

Machined surfaces and all threads shall be protected.

Unless otherwise specified, flange faces (other than those furnished with permanentblinds) shall be protected either by a steel plate with gasket, not smaller than the flangeoutside diameter, secured with a minimum of 4 bolts and sealed with waterproof tape.

Welding stub ends shall be provided with steel or plastic weld bevel protectors.

Internal and external parts and piping assembled with the vessel shall be suitablysupported and braced to prevent damage during handling and transportation.

For vertical vessels, or where the permanent saddles of horizontal vessels cannot beutilised for shipping, separate steel shipping saddles shall be provided, these shall providea 75mm clearance between any nozzle and the ground. Supplier shall provide a drawingshowing the vessel rigging and temporary saddle arrangement for Company review.

A horizontal vessel may use its permanent welded on saddles for transport duringshipment. If a boot or nozzle projection extends below the saddle baseplates, then steelsaddle extensions shall be secured to the saddles to provide a 75mm minimum groundclearance for the protruding part.

Temporary shipping saddles and/or saddle extensions shall be secured to the vessel suchthat these items will remain attached to the vessel during lifting operations.

The Supplier shall propose the methods and submit detailed procedures for approval that

address the protection, preservation, packaging and shipment marking for each item inthe scope of supply.

The Supplier shall be aware of the stringent nature of the Australian quarantineregulations in regard to fumigation/treatment of packing timbers and the scheduleconstraints associated with the fumigation process. These requirements are outlined inAppendix 2 of W9000SG005.


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12. DOCUMENTATION

The Supplier shall provide documentation in accordance with the Supplier DocumentRequirements Specification A3000SG158829 and as specified in the EngineeringDocument Requirements List (EDRL) included within the Material Requisition / PurchaseOrder.


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13. APPENDICIES

APPENDIX A - Additional Requirements for Vessels Constructed Of Material withCorrosion Resistant Cladding

1.0 GENERAL

1.1 The thickness of the cladding (integrally clad or weld overlay) or lining shall not beincluded as part of the required wall thickness.

1.2 The Supplier shall ensure that the design of the vessel and cladding or lining takesaccount of the differential thermal expansion between base and cladding materials.Cladding or lining shall have sufficient ductility to accommodate any strain likely to beimposed during service.

1.3 Tray support rings, downcomer and bolting bars, may be welded to the cladding.

1.4 Major support beams for internals shall be designed/fabricated using the followingmethod of construction:

Integral cladding shall be stripped back.

The removed cladding shall be replaced with weld overlay.

A bracket matching the weld overlay material shall then be welded to the weldoverlay.

1.5 The corrosion resistance of any internal permanent attachment to the vessel shall be notless than that of the inner lining of the vessel in the area of the attachment.

1.6 Thickness of cladding shall be as specified on the vessel data sheet. Initial thickness ofplates shall be adequate to give the required minimum thickness of cladding and base

metal after forming.2.0 MATERIALS

2.1 Integrally clad plates shall be of the homogeneously clad type as obtained by roll claddingor explosive cladding. The clad plates shall conform to ASTM A263, A264 and A265 asapplicable, irrespective of the design calculation method used.

2.2 Linings other than those obtained by using integrally clad plate or overlay weld depositsshall not be used without prior approval of the Company.

3.0 CONNECTIONS, NOZZLES AND FLANGES

3.1 The nozzles in clad vessels shall have a weld overlay applied to all surfaces in contactwith the process liquid and to the gasket face. Prior to applying the weld overlay, thenozzle shall be machined such that when the weld overlay is applied and machined thefinal required internal diameter is achieved. The weld overlay on the flange face shallbe machined to t