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GB 24502-2023: Self-rescuer for coal mine
Status: Valid GB 24502: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB 24502-2023 | English | 649 |
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Self-rescuer for coal mine
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GB 24502-2023
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| GB 24502-2009 | English | 879 |
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Chemical oxygen self-rescuer for coal mine
| Obsolete |
GB 24502-2009
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PDF similar to GB 24502-2023
Basic data | Standard ID | GB 24502-2023 (GB24502-2023) | | Description (Translated English) | Self-rescuer for coal mine | | Sector / Industry | National Standard | | Classification of Chinese Standard | D09 | | Classification of International Standard | 13.100 | | Word Count Estimation | 34,364 | | Date of Issue | 2023-09-08 | | Date of Implementation | 2024-10-01 | | Older Standard (superseded by this standard) | GB 24502-2009 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB 24502-2023: Self-rescuer for coal mine---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.
ICS 13.100
CCSD09
National Standards of People's Republic of China
Replace GB 24502-2009
Coal mine self-rescuer
Published on 2023-09-08
2024-10-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
PrefaceⅠ
1 Scope 1
2 Normative reference documents 1
3 Terms and Definitions 1
4 Categories and models 3
5 Requirements 3
6 Test methods 8
7 Inspection Rules 14
8 Marking, packaging, transportation, storage and validity period 18
Appendix A (normative) Self-rescuer protective performance test method 20
Appendix B (normative) Schematic diagram of test device 23
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document replaces GB 24502-2009 "Chemical Oxygen Self-Rescuer for Coal Mines". Compared with GB 24502-2009, except for structural adjustment and editing
In addition to sexual changes, the main technical changes are as follows.
a) Added the terms "high pressure system", "rationed oxygen supply", "manual supply of oxygen" and "automatic supply of oxygen"; deleted the terms "chemical oxygen automatic supply"
"Rescue device", "Exhalation humidity", "Initial oxygen generator", "Rolling impact resistance" and "Drop test" (see Chapter 3, Chapter 3 of the.2009 edition
chapter);
b) Changed the definition of “rated protection time” (see 3.1, 3.2 of the.2009 version);
c) Added requirements for replacement when the compressed oxygen self-rescuer uses calcium hydroxide as the carbon dioxide absorbent (see 5.4.3.2);
d) Added ZH45, ZH90, ZY30, ZY45, ZY60, ZY90, ZY120 models (see 5.5.3);
e) Added provisions for quantitative oxygen supply when the respiratory volume is 35L/min and 10L/min (see 5.7.1);
f) Added provisions for automatic oxygen supply (see 5.7.2);
g) Added provisions for manual oxygen supply (see 5.7.3);
h) Added ventilation resistance requirements and test methods for exhalation valves and inhalation valves (see 5.14.1.1 and 6.14);
i) The requirements and test methods for reverse air leakage of exhalation valves and inhalation valves have been changed (see 5.14.1.2 and 6.15, 5.3.1 of the.2009 edition
and 6.2);
j) Added digital pressure indicator (see 5.14.8);
k) The amount of work done when inspecting the self-rescuer has been changed, and the amount of work done has been increased from 30L/min to 35L/min (see A.1.1 of Appendix A,
2009 version of 6.1.1.1);
l) The oxygen extraction volume and carbon dioxide inlet volume have been changed (see Table A.1 and Table A.2 in Appendix A, Table 2 and Table 3 in the.2009 version);
m) Delete the calculation of the average carbon dioxide concentration of the 15-minute self-rescuer in formula (4) [see formula (A.4) in Appendix A,.2009
version of formula (4)].
Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents.
This document is proposed and managed by the State Mine Safety Supervision Bureau.
The previous versions of this document and the documents it replaces are as follows.
---First published in.2009 as GB 24502-2009;
---This is the first revision.
Coal mine self-rescuer
1 Scope
This document stipulates the classification and model, requirements, inspection rules, marking, packaging, transportation, storage and validity period of self-rescuers for coal mines, and
Corresponding test methods.
This document applies to the design, production, inspection and use of self-rescuers used in coal mines (hereinafter referred to as "self-rescuers").
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document.
GB/T 191 Packaging, storage and transportation pictorial mark
GB/T 1226 General pressure gauge
GB/T 2423.17 Environmental testing of electrical and electronic products Part 2.Test methods Test Ka. Salt spray
GB 2890 Respiratory protection self-priming filter gas mask
GB/T 3836.1 Explosive atmosphere Part 1.General requirements for equipment
GB/T 3836.4 Explosive atmospheres Part 4.Equipment protected by intrinsically safe type "i"
GB/T 5099.1 Seamless steel gas cylinders Part 1.Steel cylinders with a tensile strength of less than 1100MPa after quenching and tempering
GB/T 5099.4 Steel seamless gas cylinders Part 4.Stainless steel seamless gas cylinders
GB/T 8982 Medical and aviation respiratory oxygen
GB/T 10111 Generation of random numbers and their application in product quality sampling inspection
GB/T 28053 Aluminum alloy liner carbon fiber fully wrapped gas cylinder
GB/T 31838.2 Dielectric and resistive properties of solid insulating materials Part 2.Resistive properties (DC method) Volume resistance and
Volume resistivity
AQ/T 1057-2008 Chemical oxygen self-rescuer initial oxygen generator
MT/T 113-1995 General test methods and judgment rules for flame retardant and antistatic properties of polymer products used in underground coal mines
MT/T 427-1995 Technical specifications for potassium superoxide flake oxygen generating agent
MT/T 454-2008 Technical specifications for calcium hydroxide for isolation oxygen breathing apparatus and self-rescuers
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Rated protection time ratedworkingduration
The operating time of the self-rescuer measured under specified test conditions.
3.2
The self-rescuer ensures the normal breathing performance of the human body during the protection period.
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