GB/T 37241-2018 English PDF

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GB/T 37241-2018: Guide on inerting for the prevention of explosions
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 37241-2018	839	Add to Cart	6 days	Guide on inerting for the prevention of explosions	Valid

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Basic data

Standard ID: GB/T 37241-2018 (GB/T37241-2018)
Description (Translated English): Guide on inerting for the prevention of explosions
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: C67
Classification of International Standard: 13.230
Word Count Estimation: 42,485
Date of Issue: 2018-12-28
Date of Implementation: 2019-07-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 37241-2018: Guide on inerting for the prevention of explosions

---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.
Guide on inerting for the prevention of explosions ICS 13.230 C67 National Standards of People's Republic of China Inertization and explosion protection guide Published on.2018-12-28 2019-07-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 General requirements 3 5 inerting method 4 6 inerting system 6 7 Personal protection 10 Appendix A (informative) The limiting oxygen concentration of common flammable gases and dusts is 11 Appendix B (informative) Explosive concentration range of combustible gas and combustible dust 15 Appendix C (informative) Inerting calculation 22 Appendix D (informative) Prevents air from diffusing downward into the release tube 25 Appendix E (informative) Solid material double valve 27 Appendix F (informative) Open container charge 29 Appendix G (informative) Process equipment inerting example 31 Appendix H (informative) Common Oxygen Concentration Detector 34 Reference 36

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the Emergency Management Department of the People's Republic of China. This standard is under the jurisdiction of the National Safety Production Standardization Technical Committee (SAC/TC288). This standard was drafted. Tianjin Fire Research Institute of the Ministry of Public Security, Institute of Industrial Explosion and Protection of Northeastern University, Shaanxi Provincial Public Security Fire Brigade, China Wuhuan Engineering Co., Ltd., Sinopec Engineering Construction Co., Ltd., MCC Saidi Engineering Technology Co., Ltd., Weitron Fire Safety Group-owned company, Shenhua Group Co., Ltd. The main drafters of this standard. Ren Changxing, Du Xia, Li Ye, Zhong Shengjun, Zhang Ming, Li Jin, Zhang Xin, Zhang Wang, Wang Wei, Yang Jianguo, Dong Haibin, Wang Ruoqing, Chen Le, Li Wei, Li Huiying, Li Hua.

Introduction

Inerting protection is to prevent combustible dust or gas in the equipment by introducing inert gas or adding inert dust to the equipment to be protected. An inertial explosion-proof technology for explosions. Inert explosion-proof is commonly used in coal chemical, electric power, steel, cement and other coal powder preparation systems, and can also be used in petroleum. Neutralization of atmospheres in explosive atmospheres of combustible dusts, combustible gases or mixtures of chemicals, plastics, pharmaceuticals, pesticides, etc. On the lower pressure The rising rate of dust can be drastically reduced by mixing a small amount of inert dust. Usually mixed with 60% inert dust, the explosiveness is complete Lost. Dust inerting may have little effect on the explosion pressure, but it has a great influence on the rate of explosion pressure rise, which can slow down the development of the explosion. Or make the explosion a slow burning. This standard does not involve the inertia of inert dust. This standard is for optimizing the selection of industrial fireproof and explosion-proof inerting technology methods, determining the minimum oxygen content of combustible mixed dust or gas, and calculating the inertia. The flow of gas, as well as the storage of inert gases, monitoring systems and the design of linkage control are instructive. Inertization and explosion protection guide

1 Scope

This standard gives the basic method and inerting system technology for inerting and explosion of atmosphere in combustible dust or flammable gas explosive environment. Claim. This standard applies to the inerting of the inert gas into the explosive atmosphere of combustible dust, combustible gas or a mixture thereof. Chemical technology, partial inerting can be referred to implementation. This standard does not apply to the following situations. ---Inertization technology that uses inert dust to combustible dust to prevent dust explosion; --- Techniques for setting a fire-resistant metal mesh in a gas space in a container or storage tank to prevent explosion of flammable liquid vapor; ---Extinguishing; --- Techniques for controlling the concentration of combustible substances above the upper explosion limit to avoid an explosive atmosphere; --- Control the dust layer or dust deposits to occur in the fire, spontaneous combustion, exothermic reaction or fire protection in the dust layer.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 15604 dust explosion-proof terminology GB 25285.1 Explosive environmental explosion prevention and protection - Part 1. Basic principles and methods

3 Terms and definitions

The following terms and definitions as defined in GB/T 15604 and GB 25285.1 apply to this document. 3.1 Inerting The mixture in the system cannot be explosive by adding inert gas to the protected system or adding inert dust to the combustible dust. Environment, or explosion-proof technology that increases the difficulty of ignition of the mixture. 3.2 Atmosphere inertia atmosphereinerting By filling the protected system with inert gas, the mixture in the system can not form an explosive environment, or increase the difficulty of the mixture ignition. Explosion-proof technology. 3.3 Completely inerted absoluteinerting One of the inerting techniques, because the proportional concentration of the inert gas in the protected system is sufficiently high, regardless of the ratio of combustibles to oxygen-containing gas mixture For example, no change will create an explosive environment. 3.4 Partially inertial partialinerting One of the inerting techniques, which controls the oxygen concentration in the system by charging an inert gas into the protected system to make combustible gas or combustible dust. ......

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