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  • CARBON MONOXIDE AND SYNGAS PIPELINE SYSTEMS

    IGC Doc 120/04/E

    GLOBALLY HARMONISED DOCUMENT

    EUROPEAN INDUSTRIAL GASES ASSOCIATION

    AVENUE DES ARTS 3-5 B 1210 BRUSSELS Tel : +32 2 217 70 98 Fax : +32 2 219 85 14

    E-mail : info@eiga.org Internet : http://www.eiga.org

  • EIGA 2004 - EIGA grants permission to reproduce this publication provided the Association is acknowledged as the source

    EUROPEAN INDUSTRIAL GASES ASSOCIATION Avenue des Arts 3-5 B 1210 Brussels Tel +32 2 217 70 98 Fax +32 2 219 85 14

    E-mail: info@eiga.org Internet: http://www.eiga.org

    IGC Doc 120/04

    CARBON MONOXIDE AND MIXTURES PIPELINE SYSTEMES

    KEYWORDS

    CARBON MONOXIDE

    CORROSION

    CLEANING

    CONTRACTOR

    ENVIRONMENT

    FIRE

    HAZARD

    HYDROGEN

    INSPECTION

    LEGISLATION

    METERING

    PIPING SYSTEM

    PREVENTION

    SAFETY

    TRANSPORTATION

    VALVE

    WELDING

    WORK PERMIT

    Disclaimer

    All technical publications of EIGA or under EIGA's name, including Codes of practice, Safety procedures and any other technical information contained in such publications were obtained from sources believed to be reliable and are based on technical information and experience currently available from members of EIGA and others at the date of their issuance. While EIGA recommends reference to or use of its publications by its members, such reference to or use of EIGA's publications by its members or third parties are purely voluntary and not binding. Therefore, EIGA or its members make no guarantee of the results and assume no liability or responsibility in connection with the reference to or use of information or suggestions contained in EIGA's publications. EIGA has no control whatsoever as regards, performance or non performance, misinterpretation, proper or improper use of any information or suggestions contained in EIGA's publications by any person or entity (including EIGA members) and EIGA expressly disclaims any liability in connection thereto. EIGA's publications are subject to periodic review and users are cautioned to obtain the latest edition.

  • IGC DOC 120/04

    Table of Contents

    1 Introduction ......................................................................................................................................1

    2 Scope and purpose..........................................................................................................................1

    3 Definitions ........................................................................................................................................2

    4 Design philosophy............................................................................................................................5 4.1 General criteria .........................................................................................................................5 4.2 Properties of Syngas ................................................................................................................6

    4.2.1 Flammability ......................................................................................................................6 4.2.2 Toxicity ..............................................................................................................................7 4.2.3 Brittle fracture and environmental damage mechanisms..................................................7

    4.3 Metallic Materials ......................................................................................................................8 4.3.1 Generalities .......................................................................................................................8 4.3.2 Carbon Steels....................................................................................................................9 4.3.3 Microalloyed Steels .........................................................................................................11 4.3.4 Carbon-Molybdenum (C-Mo) and Carbon-Molybdenum-Chrome (C-Mo-Cr) Low Alloy Steels...............................................................................................................................12 4.3.5 Stainless Steels...............................................................................................................13 4.3.6 Nickel Alloys ....................................................................................................................13 4.3.7 Copper and Cobalt Alloys................................................................................................13 4.3.8 Carbonyl Formation.........................................................................................................13

    4.4 Non metallic materials ............................................................................................................13 4.4.1 CO compatibility with Non Metallic Material ....................................................................14 4.4.2 H2 Compatibility with Non Metallic Material ....................................................................14 4.4.3 Syngas.............................................................................................................................15

    4.5 Piping systems........................................................................................................................15 4.5.1 Underground piping systems...........................................................................................15 4.5.2 Above-ground piping systems.........................................................................................16 4.5.3 Pipeline markers..............................................................................................................16 4.5.4 Corrosion protection ........................................................................................................16 4.5.5 Leakage Surveys.............................................................................................................18

    4.6 Hazard analysis and risk assessment ....................................................................................18 4.6.1 General............................................................................................................................18 4.6.2 Identification of the hazards ............................................................................................19 4.6.3 Mitigating measures ........................................................................................................19 4.6.4 Typical event scenarii ......................................................................................................19 4.6.5 Consequences of these events .......................................................................................19 4.6.6 Selection of simulation model parameters ......................................................................19 4.6.7 Criteria for the feared event.............................................................................................20 4.6.8 Definition of the zone to be studied around the pipe.......................................................21 4.6.9 Risk criteria......................................................................................................................21

    4.7 Siting of stations .....................................................................................................................21 4.7.1 General............................................................................................................................21 4.7.2 Release of CO/Syngas during maintenance ...................................................................21 4.7.3 Case of CO/Syngas leaks ...............................................................................................22

    5 Piping, valves and equipment........................................................................................................22 5.1 General criteria .......................................................................................................................22 5.2 Material selection criteria........................................................................................................22 5.3 Electrical hazardous area requirements.................................................................................22 5.4 Piping......................................................................................................................................23

    5.4.1 Venting and flare destruction systems ............................................................................23 5.4.2 Flanges and Gaskets ......................................................................................................23 5.4.3 Threaded connections.....................................................................................................24 5.4.4 Instrument tubing.............................................................................................................24

    5.5 Valves .....................................................................................................................................24 5.5.1 General............................................................................................................................24

  • IGC DOC 120/04

    5.5.2 Valve functions ................................................................................................................24 5.5.3 Valve type summary........................................................................................................26 5.5

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