美国压缩气体协会 CGA 341-2007 (R2011) Specification for Insulated Cargo Tank for Nonflammable Cryogenic Liquids Sixth Edition 非易燃低温液体隔热液货舱规范第六版

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CGA 341—2007

REAFFIRMED 2011

SPECIFICATION FOR

INSULATED CARGO TANK

FOR NONFLAMMABLE

CRYOGENIC LIQUIDS

SIXTH EDITION

COMPRESSED GAS ASSOCIATION, INC.

14501 George Carter Way, Suite 103

Chantilly, VA 20151

Phone: 703-788-2700

FAX: 703-961-1831

E-mail: cga@cganet.com

CGA 341—2007

REAFFIRMED 2011

SPECIFICATION FOR INSULATED

CARGO TANK FOR NONFLAMMABLE

CRYOGENIC LIQUIDS

SIXTH EDITION

CGA 341—2007 COMPRESSED GAS ASSOCIATION, INC. PAGE ii

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

method, 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

Association 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 opportunity to be heard. Proposed changes may be submitted via the Internet at our website,

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 10-049

Bulk Distribution Equipment & Standards Committee

NOTE—No technical information has been changed from the 2007 edition. This reaffirmed edition may include

minor editorial changes.

NOTE—Technical changes from the previous edition are underlined.

REAFFIRMED: 2011

SIXTH EDITION: 2007

FIFTH EDITION: 2002

FOURTH EDITION: 1995

THIRD EDITION: 1987

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

information 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 341—2007 COMPRESSED GAS ASSOCIATION, INC. PAGE iii

Contents Page

1 Introduction and scope ................................................................................................................................... 1

2 Definitions ....................................................................................................................................................... 1

3 General requirements ..................................................................................................................................... 2

3.1 Design pressure and design service temperature ............................................................................... 2

3.2 Regulations.......................................................................................................................................... 2

3.3 Liquid container ................................................................................................................................... 2

3.4 Inner support system ........................................................................................................................... 3

3.5 Insulation ............................................................................................................................................. 3

3.6 Outer jacket ......................................................................................................................................... 4

4 Materials ......................................................................................................................................................... 7

4.1 Liquid container ................................................................................................................................... 7

4.2 Other components ............................................................................................................................... 7

4.3 Outer jacket ......................................................................................................................................... 7

4.4 Cleaning .............................................................................................................................................. 7

5 Joints .............................................................................................................................................................. 7

5.1 General ................................................................................................................................................ 7

5.2 Welding................................................................................................................................................ 8

5.3 Location ............................................................................................................................................... 8

5.4 Attachments......................................................................................................................................... 8

6 Piping and controls ......................................................................................................................................... 8

6.1 Manholes ............................................................................................................................................. 8

6.2 Outlets ................................................................................................................................................. 8

6.3 Discharge control shutoff valves.......................................................................................................... 8

6.4 Pressure relief devices ........................................................................................................................ 8

6.5 Piping, valves, fittings, and hose ......................................................................................................... 9

7 Protection of piping, valves, and fittings ....................................................................................................... 10

7.1 General .............................................................................................................................................. 10

7.2 Mid-tank piping protective housing .................................................................................................... 10

7.3 Rear bumper...................................................................................................................................... 10

8 Supports and anchoring ............................................................................................................................... 10

8.1 Cargo tank with frame ....................................................................................................................... 10

8.2 Frameless cargo tank ........................................................................................................................ 10

9 Gauging devices ........................................................................................................................................... 11

9.1 Level gauging devices ....................................................................................................................... 11

9.2 Pressure gauges ............................................................................................................................... 11

9.3 Vacuum gauges................................................................................................................................. 11

10 Pumps .......................................................................................................................................................... 11

11 Testing .......................................................................................................................................................... 11

11.1 General .............................................................................................................................................. 11

11.2 Piping and appurtenances ................................................................................................................. 11

12 Marking of tanks ........................................................................................................................................... 12

12.1 Code and name plate ........................................................................................................................ 12

13 Certification .................................................................................................................................................. 12

13.1 General .............................................................................................................................................. 12

13.2 Retention ........................................................................................................................................... 13

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摘要：

本规范文档《美国压缩气体协会 CGA 341-2007 (R2011) Specification for Insulated Cargo Tank for Nonflammable Cryogenic Liquids Sixth Edition》是国际上广泛应用于非易燃低温液体（如液氮、液氧、液氩等）隔热液货罐设计、制造与检验的核心标准。该第六版规范由美国压缩气体协会（CGA）发布，涵盖了从材料选择、结构强度、隔热性能到运输安全的全方位技术要求，适用于公路、铁路及船用低温液货罐的合规性评估。对

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美国压缩气体协会 CGA 341-2007 (R2011) Specification for Insulated Cargo Tank for Nonflammable Cryogenic Liquids Sixth Edition 非易燃低温液体隔热液货舱规范第六版

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