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GB 23394-2024: Respiratory protection - Positive pressure self-contained closed-circuit compressed oxygen breathing apparatus
Status: Valid GB 23394: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB 23394-2024 | English | 679 |
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Respiratory protection - Positive pressure self-contained closed-circuit compressed oxygen breathing apparatus
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GB 23394-2024
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| GB 23394-2009 | English | 559 |
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Self-contained closed-circuit breathing apparatus of compressed oxygen
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GB 23394-2009
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PDF similar to GB 23394-2024
Basic data | Standard ID | GB 23394-2024 (GB23394-2024) | | Description (Translated English) | Respiratory protection - Positive pressure self-contained closed-circuit compressed oxygen breathing apparatus | | Sector / Industry | National Standard | | Classification of Chinese Standard | C73 | | Classification of International Standard | 13.340.30 | | Word Count Estimation | 34,340 | | Date of Issue | 2024-12-31 | | Date of Implementation | 2026-01-01 | | Older Standard (superseded by this standard) | GB 23394-2009 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB 23394-2024: Respiratory protection - Positive pressure self-contained closed-circuit compressed oxygen breathing apparatus
---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 13.340.30
CCSC73
National Standard of the People's Republic of China
Replaces GB 23394-2009
Respiratory protection positive pressure self-contained closed circuit
Compressed oxygen breathing apparatus
Released on 2024-12-31
2026-01-01 implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Classification and labeling 2
5 Technical Requirements 2
6 Test methods 9
7 Inspection Rules 23
8 Marking, packaging, transportation and storage 26
Appendix A (Normative) Practical performance test method 27
Figure 1 Schematic diagram of the reverse leakage test device for the exhalation valve and the inhalation valve 11
Figure 2 Schematic diagram of the expiratory valve and inspiratory valve ventilation resistance test device 12
Figure 3 Schematic diagram of respiratory protection performance test device 17
Figure 4 Schematic diagram of heat exchanger 18
Figure 5 Schematic diagram of connecting parts 19
Figure 6 Schematic diagram of humidifier 20
Figure 7 Schematic diagram of the test head model 21
Figure 8 Schematic diagram of impact testing machine 22
Figure 9 Schematic diagram of impact testing machine 23
Figure A.1 Building block shape 28
Table 1 Overall weight of oxygen respirator 4
Table 2 Pressure indicator indication value 6
Table 3 Exhalation resistance and inhalation resistance of oxygen respirator 8
Table 4 Protection performance test parameters (I) 8
Table 5 Protection performance test parameters (II) 16
Table 6 Inspection Items 23
Table A.1 Oxygen breathing apparatus simulation operation test time and frequency 27
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB 23394-2009 "Self-contained closed-circuit compressed oxygen breathing apparatus". Compared with GB 23394-2009, in addition to the structural adjustment
In addition to editorial changes, the main technical changes are as follows.
--- Changed the scope (see Chapter 1, Chapter 1 of the.2009 edition);
--- Added provisions for classification of low-pressure gas storage structures and gas cylinders (see 4.1.2, 4.1.3);
--- Changed the marking provisions (see 4.2.1, 4.2 of the.2009 edition);
--- Added the provisions for the production year and number marking on the mask body (see 4.2.2);
--- Added the design requirements for the service life of oxygen breathing apparatus (see 5.1.1);
--- Changed the requirements for carbon dioxide absorbent (see 5.6, 5.4.6 of the.2009 edition);
--- Changed the requirements for cleaning, disinfection and drying of oxygen breathing apparatus (see 5.7, 5.5 of the.2009 edition);
--- Changed the requirements for mask headband strength (see 5.10.3, 5.8.3 of the.2009 edition);
--- Changed the requirements for mask field of view (see 5.10.4, 5.8.4 of the.2009 edition);
--- Added requirements for mask lens haze, wear resistance, prism difference and high-speed particle impact resistance (see 5.10.6, 5.10.7,
5.10.8, 5.10.9);
--- Added requirements for mask defogger (see 5.10.10);
--- Changed the requirements and test methods for the overall air tightness of the mask (see 5.10.11, 6.8.9, 5.8.7, 6.11.4 of the.2009 edition);
--- Changed the requirements for the opening pressure of the exhaust valve (see 5.13.1, 5.11.2 of the.2009 edition);
--- Changed the requirements for the output flow rate of the pressure reducer outlet (see 5.16.2, 5.19.2 of the.2009 edition);
--- Changed the requirements for pressure indicators (see 5.17, 5.20 of the.2009 edition);
--- Added the requirements for the indicated value of the pressure indicator (see Table 2);
--- Added the requirements and test methods for the maximum gas consumption when the alarm is on (see 5.18.2, 6.18.2);
--- Changed the requirements for gas cylinders and gas cylinder valves (see 5.20, 5.21, 5.17, 5.18 of the.2009 edition);
--- Changed the requirements and test methods for air tightness of low-pressure systems (see 5.22.2, 6.21.2, 5.24.2, 6.21.2 of the.2009 edition);
--- Changed the requirements for expiratory resistance and inspiratory resistance (see Table 3, Table 2 of the.2009 edition);
--- Added the requirements for carbon dioxide content when the breathing volume is 30L/min (see 5.24.5.1);
--- Changed the requirements and test methods for temperature resistance (see 5.25, 6.24, 5.14.1, 6.5.1.1 of the.2009 edition);
--- Changed the flame retardant performance requirements and test methods (see 5.26, 6.25, 5.14.2, 6.12 of the.2009 edition);
--- Changed the requirements for radiant heat resistance (see 5.28, 5.14.3 of the.2009 edition);
--- Deleted the storage test method at -6 ℃ (see 6.5.1.2 of the.2009 edition);
--- Changed the requirements for mask performance test (see 6.8, 6.11 of the.2009 edition);
--- Changed the requirements for protective performance test parameters (see Table 4, Table 5, Table 4, Table 5 of the.2009 edition);
--- Added the requirements for cylinder valve test (see 6.20);
--- Changed the provisions of the inspection rules (see Chapter 7, Chapter 7 of the.2009 edition);
--- Changed the marking requirements (see 8.1, 8.1 of the.2009 edition).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document is proposed and coordinated by the Ministry of Emergency Management of the People's Republic of China.
The previous versions of this document and the documents it replaces are as follows.
---First published in.2009 as GB 23394-2009;
---This is the first revision.
Respiratory protection positive pressure self-contained closed circuit
Compressed oxygen breathing apparatus
1 Scope
This document specifies the classification and marking, technical requirements, inspection rules, marking, packaging, transportation, etc. of positive pressure self-contained closed-circuit compressed oxygen breathing apparatus.
The requirements for transport and storage are described and the test methods are described.
This document applies to positive pressure self-contained closed-circuit compressed oxygen breathing apparatus (hereinafter referred to as oxygen breathing apparatus).
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 1226 General pressure gauge
GB/T 2410 Determination of light transmittance and haze of transparent plastics
GB 2626-2019 Respiratory protection Self-priming filter type anti-particulate respirator
GB 2890-2022 Respiratory protection self-priming filter respirator
GB/T 3836.1 Explosive atmospheres Part 1.General requirements for equipment
GB/T 3836.4 Explosive atmospheres Part 4.Equipment protected by intrinsic safety type "i"
GB/T 8982 Medical and aviation breathing oxygen
GB/T 11640 Aluminum alloy seamless gas cylinders
GB/T 16556-2007 Self-contained open-circuit compressed air breathing apparatus
GB/T 28053 Aluminum alloy liner carbon fiber fully wrapped gas cylinder
GB/T 32166.2-2015 Personal protective equipment Eye and face protection Occupational eye and face protection Part 2.Measurement methods
MT/T 454 Technical requirements for calcium hydroxide for isolated oxygen breathing apparatus and self-rescuer
TSG23-2021 Gas Cylinder Safety Technical Regulations
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
breathingapparatus
The mask is used to isolate the wearer's respiratory organs from harmful ambient air, using compressed oxygen as the breathing gas source to absorb exhaled gas.
The carbon dioxide in the low-pressure system is then supplemented with oxygen for breathing, forming a complete breathing cycle.
Air-carrying isolating respiratory protective equipment with a pressure not lower than the ambient pressure.
3.2
High pressure system
It consists of gas cylinders, gas cylinder valves, pressure reducers, manual supply valves, pressure indicators, alarms and other components and connectors that carry high-pressure oxygen.
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