GB 7957.2-2009Cap lights for use in mines susceptible to firedamp - Part 2: Performance and other safety-related matters (English PDF)
瓦斯环境用矿灯 第2部分：性能和其它相关安全事项
GB 7957.2 | Evolution and historical versions
| Std ID | Title | Status |
|---|---|---|
| GB 7957-2023 | Safety technical requirement for cap lamps in coal mine | Valid |
| GB/T 7957-2017 | General requirements for construction，performance and explosion protected testing of caplights for use in mines susceptible to firedamp | Obsolete |
| GB 7957.2-2009 | Cap lights for use in mines susceptible to firedamp - Part 2: Performance and other safety-related matters | Obsolete |
GB 7957.2-2009 is obsolete. It has been replaced by GB/T 7957-2017. This page sells the obsolete edition, for projects and contracts that still cite it.
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Issued by
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China
Level / Type
National · Mandatory
Issue date
September 30, 2009
Implementation date
February 1, 2010
Scope
GB 7957.2-2009 is the English-translated version of 瓦斯环境用矿灯 第2部分：性能和其它相关安全事项.
GB 7957.2-2009 is the Chinese national standard "Cap lights for use in mines susceptible to firedamp - Part 2: Performance and other safety-related matters".
It was issued on September 30, 2009 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and the Standardization Administration of China, and took effect on February 1, 2010. It is obsolete: it has been replaced by GB/T 7957-2017.
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Document preview — GB 7957.2-2009
National Standard of the People's Republic of China
Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China
Contents
- Document data
1 Document data
Sector: National standard (Mandatory).
Issuing body: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China.
Date of issue: 2009-09-30.
Date of implementation: 2010-02-01.
Status: obsolete, replaced by GB/T 7957-2017.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.
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