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玩手机的坏处This document superdes the following document(s):
Revision | Date | Prepared by | Checked by | Approved by | Changes 言之成理 |
怎么给相册设置密码0 | 2012-02-28 | Zhu Dan | He Feng; An Xiaofeng; Han Xuequn Bian Chunlong; Leng Renqiang; He Zhisong | Liu Lubing | New document |
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目录TABLE OF CONTENTS
1.目的purpo
按照液空集团的要求，所有氢气tube trailer上必须安装紧急切断阀，此切断阀在失效情况下将关闭（Fail Clo，下文以FC表示）。由于该紧急切断阀是气动阀门，所以需要配置仪表气源，为了保证仪表气源的可靠性，除了在Tube Trailer车上配置切断阀仪表气源外，在气站现场还需安装后备气源。
According to AL group requirement, all H2 tube trailer should install emergency shut off valve, which will be shut off when in failure status (Fail Clo, FC in following text). Becau this valve is pneumatic type, so instrument air is needed to drive actuator of it, considering reliability of this instrument air source, besides Instrument source for emergency shut off valve is available on tube trailer; back up instrument air source should also be installed on site.
2.适用范围Field of Application
此文件适用于液空中国IM所有客户现场气站和充灌中心。
This document applies to all AL IM customer gas stations and Filling centers.
3.参考文件REFERENCE DOCUMENTS
此文件参考以下液空内部文件最新有效内容，除非另有规定。
The documents quoted below are to be ud according to the latest issue in valid, unless otherwi stated.
[1] | GT-SP-CYL-124 好听的女网名 | SPECIFICATIONS FOR HYDROGEN TUBE AND CYLINDER TRAILERS |
[2] | 心理健康素养GT-PR-COM-021 | SAFETY RULES FOR HYDROGEN INSTALLATIONS AND EQUIPMENT |
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4.设计要求design requirement
氢气tube trailer上配置的切断阀为FC阀门，安装在氢气tube trailer出口手动总阀的上游，所需气源正常工作压力为7barg，最高工作压力为9barg。若气源被切断且压力泄放后，紧急切断阀门将关闭，从而切断氢气供应。因此，当现场发生火灾等紧急情况时，可能的情况下，操作人员可主动将气源切断并泄放，停止氢气输出。若无法靠近氢气站，气源供气软管被烧断后，也会切断氢气输出。现场配置的气源系统有两种形式：现场氮气站供气源和现场氮气钢瓶供气源。
The emergency shut off valve installed on H2 tube trailer is FC type valve, which is installed on the upstream of tube trailer master outlet manual valve. Needed working pressure for instrument air source is 7barg, while the highest working pressure is 9barg. If the instrument air source is cut down and pressure is relead, the emergent shut off valve will be clod and then stop H2 gas supply. So when fire or other emergency occurs, if possible, operator will cut off instrument air source manually to stop H2 supply. If operator cannot get clo to H2 station, H2 supply will also be stopped while instrument air supply ho is burned out. There are two kinds of instrument air source systems on gas station sites: on site N2 gas station and N2 cylinders.
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