SY/T 6519-2001 Classification of gases, vapors and dusts for electrical equipment in hazardous (classified) areas
Some standard content:
Record number: 9605-2(01
Petroleum and natural gas industry standard of the People's Republic of China S/T 6519201
Classification of gases, vapors and dusts for electrical,equipment in hazardous (elassified) locations2001+0924Released
National Economic and Trade Commission
2002-01-01Implementation
SY/T 6S19—2001
Industrial grade materials:
Sichuan grade materials
4 Reference documents
Gases and gases
Appendix 4 (recommended records)
Appendix B (recommended records)
Appendix ((recommended records)
Detailed explanation
Reference publications
SY/T6519-—2001
This standard is equivalent to the American Fire Protection Association NFI'A497M "Classification of gases, vapors and powders for electrical equipment in emergency (classified) areas" (1991 edition). This standard provides information about specific flammable gases, flammable liquids and flammable powders. This standard is intended to help dangerous goods (Classification) Select the special self-gas equipment required in the area. In the revision process of this standard, according to the needs of the content, the "Introduction" and "Index" of the original standard were omitted, and the contents that conflicted with the current laws and regulations of my country were rectified accordingly. This standard is based on the appendix A, appendix B, and appendix C (all appendices with obvious reminders). This standard was drafted by the National Technical Committee for Industrial Safety Standardization of Shengli Oil and Gas Administration. The drafting unit of this standard is the Safety and Environmental Protection Department of Shengli Oil and Gas Administration. Zhao Laishan, Pan Yuxing, Xie Kehua
The main drafters of this standard are Zhang Yong, Li Junrong, Hao Qingshan, Chen Jianyi [Classification of gases, vapors and dusts related to electrical equipment in the area of hazard classification of the People's Republic of China] or gases, yapory anul duats fur cleeLrical.egulpment in hazardous (classified) areas Note: An asterisk (*) on a section number or text indicates that the corresponding section in Appendix A contains explanatory material. 1 Overview
1.1 Scope
SY/T651920011
This standard provides data on the requirements for the following types of flammable gases, combustible and flammable liquids and flammable components. The tables in this standard are not intended to include all other material:
1.2 Purpose
This standard is intended to assist in the selection of special electrical equipment required for use in hazardous (classified) areas (see Article 500 of the National Electrical Code N1A70).
1.3 Definitions
The following definitions apply in this standard.
1.3.1 Approved
Means approval of the product under control.
1.3.2 The competent authority is the organization, office or individual responsible for approving the equipment, installation or process. 1.3.3 Combustion temperature, particularly in relation to heating or consuming materials, is the minimum temperature required to ignite or sustain combustion of solids, liquids or gases (see NF1A325M "Fire hazard characteristics of irritable gases and selective ignitable bodies" 3). 1.3.4 Class I, Classification Iaas I, Diviaion I, in the following locations: (1) The ignition temperature of combustible gas vapors present under normal working conditions: (2) Frequent exposure to such gases or vapors by maintenance or repair personnel or due to the presence of such gases or vapors: (3) Changes in equipment or processing Failure or misoperation may release flammable vapors and gases with a flammable concentration and may also cause electrical equipment failure [see FPA7U "National Gas Regulations" 50% (]
1.3.5T Class 2 Class 1, Class 2
The following locations: (1) Places where flammable or combustible gases are handled, processed or used, but the filters, gases or gases in them are usually confined in a closed system. They will only be released when the container system accidentally ruptures or fails, or when the equipment is abnormal: (2) The flammability of gases or vapors is usually stopped by mechanical ventilation, and it may cause danger due to failure or abnormality of the ventilation equipment; (3) The flammability of gases or vapors adjacent to Class 1 and Class 2 ventilation may be too high. Regional convection, unless there is sufficient positive pressure ventilation from the clean air source and effective measures are taken to prevent ventilation failure to stop this double flow. 1.3.6T Class 1, divisiot1 The following locations: (1) Under normal working conditions, there is flammable dust in the air, the amount of which is sufficient to produce an explosive or ignitable mixture; (2) Mechanical failure or abnormal operation of machinery or equipment may cause such an explosive or ignitable mixture, and there is also a simultaneous malfunction of electrical equipment, protective equipment or other reasons to produce an ignition source; (3) There is conductive dust that may reach a dangerous amount. See NF1A70 National Electrical Code 500-6 (a), 1.3.7 Paper 2 Classification clagsT, diviskon2 The following places: The amount of flammable dust in the air is not usually enough to produce explosive or ignitable compounds, and the concentration of flammable dust is not enough to interfere with the operation of electrical equipment and other instruments, but the combustible dust may be incubated in the air due to handling or accidental failure of equipment. Or on electrical equipment, or the accumulation of solid flammable materials may be sufficient to interfere with the safety of electrical equipment or may become ignitable due to abnormal conditions or other reasons of electrical equipment. See NEPA0 National Standard 50-G (: 1.3.8 Heat mmsrihle
Any solid particle with a diameter of 420 or less that has a risk of ignition or explosion when collected and will ignite in the air or its gaseous oxidants.
1.3.9 Combustible liquids are classified into: Class T liquids: flash point equal to or greater than 37.8°C (100°F) but less than 60°C (140°F); Class A liquids: flash point equal to or greater than 60°C (140°F) but less than 200°C (200°F); Class B liquids: flash point equal to or greater than 200°C (140°F) but less than 200°C (200°F). (See NHPA3216 Basic Classification Standards for Flammable and Combustible Liquids) 1.3.10 Explosion hazard level xpbuinverity due to dust explosion hazard (Section 3.3) 1.3.11 Flammable liquid with flash point lower than 38℃ (100F) and gas below 275k (40) is subdivided into: LA grade liquid: flash point lower than 22.8℃ (73F) and flash point equal to or greater than 37.8℃ (10F) IB grade liquid: flash point lower than 22.8 (73F) and flash point equal to or greater than 37.8℃ (10F) IC grade liquid: flash point equal to or greater than 22.HT: (73) but lower than 37.8 (1). (See NF114321 Basic Classification Standards for Flammable and Combustible Liquids) 1.3.12 Flash point μoint
The lowest temperature at which a substance can emit a sufficient concentration of fumes to form a mixture with air near the surface of a liquid (see NEA321 for the classification of flammable and combustible concentrations). 1.3.13 Hybsidust
A mixture of a substance with one or more flammable gases or gases. 1.3.14 Ignition sensitivity is used to measure the ease with which a combustible dust in a state of ignition is ignited. 1.3,15 Labeling is complete. The manufacturer shall attach a label, specification number or other mark to the equipment or material by an organization recognized by the manufacturer and related to product evaluation. The organization shall conduct regular inspections on the production of the labeled equipment or materials, and use the label to indicate that the production of the manufacturer's equipment or materials complies with the corresponding standards or approved working methods.16 Listed
Equipment or materials that are registered in a register published by an organization recognized by the authority having jurisdiction over the product evaluation, which has conducted production inspections of the registered equipment or materials; with the help of the registration, the equipment or materials are checked and found to be suitable for use in the specified conditions. 2 Sensitive Materials - Gases and Vapors
2.1 NEF47 Sections 500 and 501 of the National Electrical Code provide relevant information on the use of electrical equipment in locations where flammable gases and vapors may pose a hazard. In general, the equipment must meet the standards for Class 1 and Class 2 as specified in NEPA70, the National Electrical Code. However, in some areas, the presence of flammable gases or vapors does not necessarily require the use of special electrical equipment in this area. A place with Class 2 cases has some fire requirements, and due to technical requirements, these conditions cannot be changed. The temperature of the surface of the equipment may exceed the auto-ignition degree of the treated material. In addition, some materials will spontaneously ignite when exposed to air. Special electrical equipment cannot prevent ignition from other fire sources. 2.2 Materials are determined based on the specifications of the test materials and chemical structure. It can be inferred that any untested grouping of a particular material may not be accurate. Therefore, in some cases, it is recommended that the untested material be submitted to a qualified laboratory to verify the determined grouping. 2.3 Table 2.3 lists the flammable gases or vapors of flammable liquids as defined in NFPA 321, "Standard for the Classification of Combustible and Combustible Gases". These gases or vapors form ignitable or flammable mixtures with air at ambient temperature. This applies to special electrical equipment:
Table 2.3 Classification and ignition speed of flammable and liquid gases with flash points below 100F (37.8°C) (4°C) Village
Propylene glycol (prohibited)
Allyl alcohol
Allyl alcohol
Acrylic acid esters
Acrylic acid pyridine
1. 3-Diene
1: Butadiene
2-1-ol
age normal device
Ethylene
N-butylene
One state chemical embedding
B (e)*
White room (ArT)
Chlorobutadiene
Butadiene
Cyclo2-cyclopentane
Cyclopropane
1.1-two years
1.2-year
1.3-two-crystal
【一一】
One isobutylene
One isobutylene
One isobutylene
One methyl film||tt| |1-N-methylamine
Epoxyethane
Propyl terminal acid ester (banned)
2-dicarboxylic acid
1,2-diethane
Ethylene oxide
Ethylene oxide
+ethyl acetatebZxz.net
Acetylase
Ethyl acetate
Medium aldehyde (gas)
SY/T65192001
Table 2.3 (Chain)
Natural benefit (AIT)
Fuel and combustible working gas
(Volume 0% or less)
High-chemical treatment
Research and development of chemical
Ethyl isobutylene
Isobutyl alcohol
Isobutylene
Isopropyl ether
Isopropyl acetate
Isopropyl acetate
Isopropyl acetate
Isopropyl acetate
Isopropyl acetate
Isopropyl acetate
Isopropyl acetate
Isopropyl acetate
(See fuel and combustible working gas)
Diacetylene
Methoxyacetylene
Methoxypropane (heptyl)
Methyl acrylate
SY/T 6519—2001
Table 2.3 (line)
Autoignition temperature (ATT)
536-660
761842
20 -47[
4nsi~4×
Methyl acetal
Methyl formate
Methyl butyl ketone
Methyl alcohol
2-methyl 1 1.1 Methyl alcohol Naphtha [petroleum] Nitrate ethyl acetate Methane 1.1-acetylene sulfone 2.1-pyrocarbon 1 ...
SY/T65192001
Table 2.3 (Wide)
The hazardous properties of fuels and industrial gases are similar to those of nitrogen and can be classified according to the test results. *x
?1 If the equipment is not sealed with a light seal (2.5er.t
in) or 2.5um
464·529
) or higher than F, according to Section 501.5 () of the NaPA gas specification, the short circuit shown in brackets is allowed. +2) For classifications related to hydrogen, see ANSI/ASHRAE15 Safety Code for Refrigeration and AYA2. [Safety Requirements for the Storage and Operation of Water]: *3) Some chemicals may require protection beyond the requirements of any of the above groups, for example, a bowl of flammable chemicals is such a chemical, because it has a low natural twist and a small time interval for the first transmission of the organization.
) Naphtha and oxygen mixtures, the use temperature of which is 20-135, for example, light petroleum, petroleum aldehydes and naphtha are also products of this energy
This industry's combustion temperature is determined by FTA5SM, which is called the number of degrees of fire hazard characteristics of the materials listed in the safety characteristics of the materials listed in 2.4. In 2.4, the >FPA321 basic classification standard for combustible liquids is called the normal gas, which is defined as the mature gas of the liquid, and this The material will not form a flammable mixture with air at ambient temperature unless heated to 1°C above its flash point. Only in this case is special electrical equipment required [see NFP" Flammable and Combustible Materials Specification! [3] Table 2.4 gives the hot gas temperature and ignition temperature (AII) of the selected reduced body equal to or greater than 3.8°C (100°F) but less than 0°C (140°C). According to 1.1.3 of the NFA30 Flammable and Combustible Materials Specification, , only in places where there is a sealed material above the flash point, it is necessary to hold the electrical equipment,
spontaneous combustion
explosive
propylene glycol
service hall accepts the following
propylene energy: (banned)
-1-yl glyceraldehyde
cyclohexanone
isopropyl benzene
diisobutylene
trimethylolpropene
|Ethylene glycol monoacetaldehyde
Ethylene glycol monoaldehyde
2-Diethylhexyl
Acid
Formic acid (0%)
Secondary ester of ethyl acetate
Ethylene glycol monoacetaldehyde ... (e)ti
743·843
410-765
74-518
Iiriti
Enjoy the mixing degree of combustion
595·4.50
210-·407
Sijia stem pin
Sanbing account
Has been classified through trial analysis
SY/T65192001
Table 2.4 (end)
All spontaneous combustion
1) According to 501.5 (of the National Standard for Combustion Gases), if all conduits with single-pass or sealed diameters are 2.Sm () or more, the maximum ignition temperature shown in the brackets is the maximum of each type listed in NFPA325 (Fire Hazards of Combustible Liquids, Gases, and Slow-Combustion Solids). Table 2.5.Class A flammable vapors are listed in NFPA 321, Basic Classification Standard for Flammable and Combustible Gases: These materials will not form flammable gases with air when incubated at temperatures above their flash point. In addition, vapors generated by heating the gas cool rapidly in air, and there is a possibility of obtaining a commercial flash point or magnetic bonding when the gas cools, etc. The gas is at an ignitable temperature, which requires special electrical equipment (see 1.1.3 of VFPA 30). Table 2.5 Composition and white temperature (AIT) of selected liquids with flash point equal to or less than 60°C: (140°C - 200°F) but less than 93.3°C: (2[1°C) Liquid vapor composition and white temperature (AIT) : 1.1.2 of the total flammable bond of aluminum NIPA3) only requires special electrical equipment for the presence or disposal of materials above their flash point, the reduced gas of which is cooled in air, from the relevant area of the fertilizer to the temperature maintained above the flash point of the rolling body.
Transparent egg chaos
For non-acetal
n-"age
Model-quiet base gun
-Guizhou
Near-ammonia tablets
Self-invested degree (AT)
133R-1110
S5U - S:
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