CGA P-7-2007
二氧化碳冷却液的转移用海上储罐软管的再次合格鉴定用指南.第5版

STANDARD FOR REQUALIFICATION OF CARGO TANK HOSE USED IN THE TRANSFER OF CARBON DIOXIDE REFRIGERATED LIQUID FIFTH EDITION


 

 

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标准号
CGA P-7-2007
发布日期
2007年
实施日期
废止日期
中国标准分类号
G42
发布单位
US-CGA
引用标准
Code of Federal Regulations, Title 49 (Translation) Parts 100-180, Superintendent of Document, U.S. Government Printing Office, Washington, DC 20402 CSA B620 CSA B622 CGA P-11 CGA G-6.6
被代替标准
CGA P-7-1996
适用范围
The Compressed Gas Association has prepared this standard as a guide for cargo tank hose users in establishing their own hose requalification procedures and standards in carbon dioxide refrigerated liquid transfer service applications. This publication is primarily written for elastomer carbon dioxide hoses, but the general inspections may be applied to hoses for other commodities. It should be understood that this is a minimum standard and may not cover all circumstances for every hose installation and lading. Each user can expect to modify this minimum standard to suit the user's own installation and conditions of service. Acceptance for continued service in accordance with these limits does not guarantee that a hose or coupling assembly is not danger~us or without the possibility of impending failure. These procedures represent the best currently available industry practice. This standard is recommended as being limited in application to hose of the following characteristics: having an inner tube of natural or synthetic elastomer using reinforcement material consisting of a ply or plies of textile fabric or yarn and/or metal wire braid and enveloped with an outer protective cover; and internal diameters from 1/4 in to 4 in (6.4 mm to 102 mm) and maximum rated working pressures from over 125 psig (860 kPa) up to and including 500 psig (3450 kPa)<(UP)2> See CGA G-6.6, Standard for Elastomer-Type Carbon Dioxide Bulk Transfer Hose, for additional information concerning construction of hoses to which this standard applies [5]. Standards for the requalification of Iow pressure hose having 125 psig (860 kPa) and lower maximum rated working pressures used in services such as the transfer of flammable liquids and combustible liquids should be obtained from the appropriate standards sources. In add tion, cryogenic liquids and certain compressed gases such as chlorine require the use of metal hose or hose with metal liners, and users should refer to the specified industry standards or to the manufacturers of such hose with regard to recommendations for reinspection and retesting procedures.

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