GB/T 27862-2011 English PDF

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GB/T 27862-2011: Testing method for classification of chemical hazards -- Fire potential and oxidizing ability of gases and gas mixtures
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 27862-2011	454	Add to Cart	4 days	Testing method for classification of chemical hazards -- Fire potential and oxidizing ability of gases and gas mixtures	Valid

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Basic data

Standard ID: GB/T 27862-2011 (GB/T27862-2011)
Description (Translated English): Testing method for classification of chemical hazards -- Fire potential and oxidizing ability of gases and gas mixtures
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A80
Classification of International Standard: 13.300
Word Count Estimation: 23,268
Date of Issue: 2011-12-30
Date of Implementation: 2012-08-01
Adopted Standard: ISO 10156-2010, IDT
Regulation (derived from): Announcement of Newly Approved National Standards No. 23 of 2011
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the gas or gas mixture is flammable in air under atmospheric conditions and oxidative capacity test methods. This standard applies to the classification of gases and gas mixtures, including the selection of cylinder valve outlet. This standard does not apply to other environmental pressures and temperatures of gases and gas mixtures.

GB/T 27862-2011: Testing method for classification of chemical hazards -- Fire potential and oxidizing ability of gases and gas mixtures

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Testing method for classification of chemical hazards. Fire potential and oxidizing ability of gases and gas mixtures ICS 13.300 A80 National Standards of People's Republic of China Chemical hazard classification test method Gases and gas mixtures of fire potential and oxidizing ability (ISO 10156.2010, Gasesandgasmixtures-Determinationoffire outlets, IDT) Issued on. 2011-12-30 2012-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard uses the translation method, identical with ISO 10156.2010 "gases and gas mixtures by measuring fire potential and oxidizing energy Force the selection of cylinder valve exhaust port. " This standard made the following editorial changes. --- Name to "chemical hazard classification of gases and gas mixtures - Test methods of fire potential and oxidizing ability." This standard is managed by the National Standardization Technical Committee chemicals dangerous (SAC/TC251) and focal points. This standard was drafted. Shandong Entry-Exit Inspection and Quarantine of Jiangsu, the National Quality Supervision and Inspection of dangerous chemicals center. The main drafters of this standard. Tangzhi Xu, Luo Xin, Xu Qin, cattle Zengyuan, Li Xiaofeng, Pangshi Ping, Zhu Yan.

Introduction

ISO 5145 "vent gas cylinder valve and the gas mixture selection and sizing" and other similar criteria established decision-cylinder outlet Practical criteria joints. These parameters are fixed based on the physical and chemical properties of the gas. Air flammability and oxidation potential were special consideration. For pure gases, there is a lot of data in the literature, the difference data depends on the different test methods, and for mixed gas of literature Data is often incomplete or can not be found. This is the difficulty of the standard applications. The primary objective of this standard is to eliminate the uncertainty of the literature exists, and supplementary data on mixed gas already exist. In addition to the selection of cylinder valve exhaust port outside the ISO 10156 later used for other purposes, such as the GHS classification and label Sign system (GHS) for the international transport of dangerous substances and precautionary labeling rules establishing flammability and oxidizing potential data. The second edition of the standard revision began in 2006, the previous version and ISO 10156-2 merged, updated and flammability Oxidizing data. Chemical hazard classification test method Gases and gas mixtures of fire potential and oxidizing ability

1 Scope

This standard specifies the test method for gas or gas mixture in air under atmospheric conditions of flammable and oxidizing ability. This standard applies to the classification of gases and gas mixtures, including the selection of cylinder valve exhaust port. This standard does not apply to other gases and gas mixtures under ambient pressure and temperature. 2 terms, definitions and symbols 2.1 Terms and Definitions The following terms and definitions apply to this document. 2.1.1 Gas or flammable gas air mixture gasorgasmixtureflammableinair Under atmospheric pressure and 20 ℃ in the gas or gases in the air can ignite the mixture. 2.1.2 Air flammable limit lowerflammabilitylimitinair A homogeneous mixture of air and the lowest concentration at the beginning of flame propagation gas or gas mixture. Note. The lower limit of the combustible measured at atmospheric conditions. 2.1.3 Air combustible ceiling upperflammabilitylimitinair Homogeneous mixture of air and gas or gas to flame spread was just beginning to maximum concentration. NOTE. Combustible high limit measured at atmospheric conditions. 2.1.4 Flammable range flammabilityrange Flammable concentration range between the lower limit and high limit. NOTE. The standard "flammable range" also known as "explosive range." 2.1.5 Gasorgasmixturemoreoxidizingthanair gas or gas mixture is more than the air oxidation of At atmospheric pressure, the oxygen content of the oxidant is higher than 23.5%, it can be maintained in the combustion gas or gas mixture. 2.2 Symbol The following symbols apply to this document. Ai. mole fraction of the gas mixture of flammable gas Bk. mole fraction of the inert gas in the mixed gas Ci. Coefficient of oxygen fraction Fi. mixed gas in subparagraph i flammable gas Ik. k-th gas mixture of inert gas Number of mixed gas flammable gases. n ......

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