美国压缩气体协会 CGA G-6.4-2015 液化二氧化碳在隔热货舱、油罐车和便携式集装箱中的安全传输

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CGA G-6.4—2015

SAFE TRANSFER OF LIQUEFIED

CARBON DIOXIDE IN INSULATED

CARGO TANKS, TANK CARS,

AND PORTABLE CONTAINERS

FOURTH EDITION

PAGE ii COMPRESSED GAS ASSOCIATION, INC. CGA G-6.4—2015

PLEASE NOTE:

The information contained in this document was obtained from sources believed to be reliable and is based on

technical information and experience currently available from members of the Compressed Gas Association,

Inc. and others. However, the Association or its members, jointly or severally, make no guarantee of the results

and assume no liability or responsibility in connection with the information or suggestions herein contained.

Moreover, it should not be assumed that every acceptable commodity grade, test or safety procedure or meth-

od, precaution, equipment or device is contained within, or that abnormal or unusual circumstances may not

warrant or suggest further requirements or additional procedure.

This document is subject to periodic review, and users are cautioned to obtain the latest edition. The Associa-

tion invites comments and suggestions for consideration. In connection with such review, any such comments

or suggestions will be fully reviewed by the Association after giving the party, upon request, a reasonable op-

portunity to be heard. Proposed changes may be submitted via the Internet at our web site, www.cganet.com.

This document should not be confused with federal, state, provincial, or municipal specifications or regulations;

insurance requirements; or national safety codes. While the Association recommends reference to or use of

this document by government agencies and others, this document is purely voluntary and not binding unless

adopted by reference in regulations.

A listing of all publications, audiovisual programs, safety and technical bulletins, and safety posters is available

via the Internet at our website at www.cganet.com. For more information contact CGA at Phone: 703-788-2700,

ext. 799. E-mail: customerservice@cganet.com.

Work Item 11-052

Carbon Dioxide Committee

NOTE—Technical changes from the previous edition are underlined.

FOURTH EDITION: 2015

THIRD EDITION: 2008

SECOND EDITION: 2002

FIRST EDITION: 1992

All materials contained in this work are protected by United States and international copyright laws. No part of this work may be

reproduced or transmitted in any form or by any means, electronic or mechanical including photocopying, recording, or any infor-

mation storage and retrieval system without permission in writing from The Compressed Gas Association, Inc. All requests for

permission to reproduce material from this work should be directed to The Compressed Gas Association, Inc., 14501 George Carter

Way, Suite 103, Chantilly VA 20151. You may not alter or remove any trademark, copyright or other notice from this work.

CGA G-6.4—2015 COMPRESSED GAS ASSOCIATION, INC. PAGE iii

Contents Page

1Introduction ..................................................................................................................................................... 1

2Scope ............................................................................................................................................................. 1

3Definitions ....................................................................................................................................................... 1

4Special hazards .............................................................................................................................................. 3

4.1Dry ice blocking ................................................................................................................................... 3

4.2Trapped liquid ...................................................................................................................................... 3

4.3Personnel overexposure...................................................................................................................... 4

4.4Low temperature effects on materials ................................................................................................. 4

4.5Overfilling containers ........................................................................................................................... 4

4.6Thrust from discharge to atmosphere.................................................................................................. 6

5Physiology of carbon dioxide .......................................................................................................................... 6

5.1General ................................................................................................................................................ 6

5.2Physiological effects of carbon dioxide ................................................................................................ 6

5.3Physical effects of overexposure to carbon dioxide ............................................................................ 7

5.4Regulatory standard ............................................................................................................................ 7

5.5Safety precautions ............................................................................................................................... 7

5.6Rescue and first aid ............................................................................................................................. 7

6Regulations .................................................................................................................................................... 7

6.1Regulatory agencies ............................................................................................................................ 7

6.2Product classification ........................................................................................................................... 8

6.3Container specifications ...................................................................................................................... 8

7Transfer facility design ................................................................................................................................... 9

7.1General ................................................................................................................................................ 9

7.2Hose and hose fittings ....................................................................................................................... 10

7.3Valves ................................................................................................................................................ 10

8Transfer procedures ..................................................................................................................................... 11

8.1General .............................................................................................................................................. 11

8.2Filling carbon dioxide cargo tanks ..................................................................................................... 11

8.3Filling carbon dioxide storage containers from cargo tanks—typical two-hose fill ............................ 14

8.4Filling carbon dioxide storage containers from cargo tanks—single-hose fill .................................... 15

8.5Filling carbon dioxide tank cars at permanent locations .................................................................... 18

8.6Unloading carbon dioxide tank cars .................................................................................................. 21

8.7Mobile storage containers ................................................................................................................. 24

8.8Portable containers (DOT/TC/CTC) .................................................................................................. 25

8.9Filling small, stationary, insulated carbon dioxide supply systems .................................................... 26

9Special handling procedures ........................................................................................................................ 27

9.1First-time fill procedure for liquid carbon dioxide storage tanks ........................................................ 27

9.2Containers that have lost pressure .................................................................................................... 28

9.3Cross-contamination of carbon dioxide in distribution ....................................................................... 28

10References ................................................................................................................................................... 30

11Additional references .................................................................................................................................... 31

Tables

Table 1—Volume expansion upon warming of liquid carbon dioxide saturated at 200 psi (1380 kPa) for a

container with a 350 psi (2410 kPa) MAWP .................................................................................................. 5

Table 2—DOT regulations pertaining to carbon dioxide [9] .................................................................................. 8

Table 3—Piping materials commonly used for carbon dioxide transfer facilities .................................................. 9

Table 4—Fittings ................................................................................................................................................. 10

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标签： #隔热 #氧化

摘要：

本文深入解读美国压缩气体协会发布的CGA G-6.4-2015标准，该标准专注于规范液化二氧化碳在隔热货舱、油罐车及便携式集装箱中的安全传输流程与设备要求。内容涵盖装卸操作、压力控制、紧急切断装置、人员防护及泄漏应急处理等关键环节，旨在为气体行业从业者提供权威的安全操作指南。无论是物流承运方、仓储管理方还是相关安全监管人员，均可通过本文全面掌握国际通行的液化二氧化碳运输规范，有效降低运输风险，确保合规作业。

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