GB 16556-2025 English PDFGB 16556: Historical versions
Basic dataStandard ID: GB 16556-2025 (GB16556-2025)Description (Translated English): Respiratory protection - Self-contained open-circuit compressed air breathing apparatus Sector / Industry: National Standard Date of Implementation: 2026-09-01 Older Standard (superseded by this standard): GB/T 16556-2007 GB/T 16556-2007
self-contained open-circuit compressed air breathing apparatus
ICS 13.340.30
C 73
National Standards of People's Republic of China
Replaces GB 16556-1996
Self-contained open circuit compressed air respirator
2007-06-26 released
2008-02-01 implementation
Chinese nationals llfl released
t = 4
Self-contained open circuit compressed air respirator
ScopeThis standard specifies the technical requirements, inspection rules, test methods, classifications, labels, signs, packages Loading, storage and transportation requirements. The wood standard applies to positive pressure self-contained open circuit compressed air respirators (hereinafter referred to as air respirators). The wood standard does not apply to oxygen respirators, diving respirators, escape air respirators and negative pressure air respirators.Normative ReferencesThe terms in the F column documents have become the terms of this standard after being referenced. For dated references, all subsequent documents The amendments (excluding the content of errata) or revisions are not applicable to this standard, however, all parties that have reached an agreement in accordance with this standard are encouraged to study Is the latest version of these files available? For undated references, the latest version of the wood is applicable to the wood standard. General pressure gauge GB/T 1226 GB/T 2410 Test method for light transmittance and haze of transparent plastics GB/T 2891-1995 Test method for filter type anti-virus and hood performance GB 3836.1 Electrical equipment for explosive gas atmospheres-Part 1. General requirements GB 3 8 3 6.4 Electrical equipment for explosive gas atmospheres Part 4. Intrinsically safe “i” GB 5 0 9 9 seamless steel cylinder GB/T 5 4 5 5-1 9 9 7 Textile combustion performance test vertical method GB/T 7307-2001 55 degree unsealed pipe thread DOT-CFFC Carbon-Fiber Aluminum Cylinders 3 terms and definitions The following terms and definitions apply to this standard. 3.1 The mask is used to fit tightly around the face of the person wearing it, so that the respiratory organs, eyes and face of the person are completely exposed to outside air or hypoxia. Isolation, a type of respirator with its own compressed air source to supply clean air for breathing, and exhaled gas directly into the atmosphere. 3.2 An air respirator in which the pressure in the cavity formed between the mask and the person's face is not lower than the ambient pressure during any breathing cycle. 3.3 Air breathing apparatus for fire-fighting and emergency services An air respirator used by firefighters and personnel undertaking emergency response tasks for nuclear, biological and chemical emergencies. 3.4 Air breathing apparatus for industrial services An air respirator used by workers in mining, petrochemical industry, metallurgy, ship transportation, public utilities and other industries 3.5 Static pressure After the positive pressure device of the air supply valve is opened, the pressure in the mask cavity when the air circuit of the air breathing apparatus is balanced. 4 Classification and marking 4.1 Classification 4.1.1 Classification by Use. a) Industrial air respirator, marked with code. G; b) Fire and emergency air respirators, marked with the code. X. 4.1.2 Classification according to rated gas storage. According to the rated air storage tt Q at 0.1 MPa, 2 (TC), air respirators can be divided into. a) 600 L Q \u003cC800 L，标记代号：6; b) 800 L \u003cQ\u003c1.200 L，标记代号：8; c) 1.200 L \u003cQ\u003c1 600 1\u003e , Marked code. 12; d) 1 600 L \u003cQ\u003c2 000 L，标记代号：16; e) 2 000 L \u003cQ\u003c2 400 L，标记代号.20; f) Q> 2 4001, mark code. 24. 4.2 Marking The product mark consists of five parts. name, this standard number, air respirator category, cylinder category, and rated gas storage. Air breathing See 4.1 for the class mark code and rated gas storage M mark code of the device. The letters F and G represent composite gas cylinders and steel gas cylinders, respectively. Example. U is suitable for air respirator for fire fighting and emergency rescue. It uses a compound gas cylinder with a rated gas storage S of 1 800 L. It is marked as. Air respirator GB/T 16556-XF-16 The meaning of each element in the mark is as follows. Fire fighting and air breathing apparatus; Composite gas cylinder Rated air storage capacity from 1 600 L to 2 000 U Example 2. An air respirator suitable for industrial use, using a steel gas cylinder, with a rated gas storage capacity of 14⑻ L, and the rt mark is. Air respirator GB/T 16556-OG-12 The meaning of each element of mark 屮 is as follows. G industrial air respirator; G-steel gas cylinder; 12-The rated gas storage capacity is 1.200 L ~ 1 600 L. X- 5 Technical requirements 5.1 General 5.1.1 In all tests, all air respirator samples tested shall meet the requirements of this standard. 5.1.2 Unless otherwise specified, when a test clause is cited, all its sub-clauses shall be cited at the same time. 5.1.3 When medium voltage auxiliary joints are installed, they shall meet the requirements specified in Appendix A. 5.2 Ergonomic requirements The technical requirements of this standard take into account the interaction between the wearer, the air respirator and the workplace where it may be used. Air call The aspirator shall meet the requirements specified in 5.3, 5.9 and 5.10. 5.3 Design requirements 5.3.1 Air respirators should be simple, compact, reliable, and easy to inspect based on information provided by the manufacturer. 5.3.2 The air respirator should be strong and reliable, and can withstand the rough use phenomenon that may be encountered in use and suitable for its category. 5.3.3 The air respirator should have no protruding parts, and the protruding part of the air respirator should not be hung when the wearer passes through the narrow passage. 5.3.4 The surface of the parts of the air respirator that may come into contact with the wearer shall be free of sharp edges and burrs. 5.3.5 The parts of the air respirator that need to be operated by the wearer shall be within reach and shall be easily identified by touching by hand. All adjustable The components and control valves should not be accidentally changed during use. 5.3.6 The wearer shall be able to continue breathing from the air respirator while removing the air respirator back gear while still wearing a mask. 5.3.7 The air respirator should be able to maintain its full function when it is in any direction. 5.3.8 The installation position of the air respirator gas cylinder valve should enable the wearer to open and close the gas cylinder while wearing. 5.3.9 When using the same specifications of air respirators (of the same category), the cylinders should be replaced without special tools. When the manufacturer When declaring that the air respirator can use different ranges of cylinders, the worst case conditions should be determined and tested. 5.3.10 Air respirators equipped with more than one cylinder may have independent cylinder valves on each cylinder. 5.3.11 The same air respirator cannot be equipped with cylinders with different rated pressures. 5.3.12 An air respirator with a lower rated working pressure cannot be fitted to a cylinder with a higher rated inflation pressure. The test shall be carried out in accordance with 6.3 and 6.4. 5.3.13 Fire-fighting and emergency air respirators shall use composite gas cylinders, and the rated use time shall not be less than 30 minutes. 5.4 Material requirements 5.4.1 All materials used in air respirators shall have appropriate mechanical strength and aging resistance. Tested according to 6.3, 6.4 and 6.6 Required. 5.4.2 Bare parts on air respirators shall not use aluminum, magnesium, titanium and their alloys. 5.4.3 Materials on the air respirator that may come into direct contact with the user's skin should be non-irritating to the skin and not harmful to health. The test shall be carried out in accordance with 6.3 and 6.4. 5.5 Cleaning and disinfection The materials used in the air respirator should be resistant to the cleaning and disinfectant recommended by the manufacturer, without significant damage after cleaning and disinfection. test The inspection shall be carried out in accordance with the provisions of 6.3 and 6.4. 5.6 Quality The overall weight of the air-breathing device with a mask and full of air for respiration should not exceed 18 kg. The test shall be carried out in accordance with the provisions of 6.1 and 6.3. 5.7 Connection 5.7.1-General requirements Air breathing apparatus connections shall be easily removable for cleaning, inspection and testing. All removable connections should be removed after disassembly Easy to connect and fasten by hand. When the connector is disassembled during normal use and maintenance, the seal used should not fall off and shift. test Proceed as specified in 6.3 and 6.4. 5.7.2 Connectors (when assembled) Twisting of air breathing apparatus breathing hoses and connecting tubes should not affect the installation of connections or the performance of the air breathing apparatus, or cause breathing Disengagement of hoses and connecting pipes. The structure of the connection should prevent accidental interruption of the air supply. The test shall be carried out in accordance with 6.3 and 6.4. 5.7.3 Bonding strength of full face mask, air supply valve and breathing hose (when assembled) The bonding strength between the breathing hose and the full face joint, the air supply valve, or between the full face joint and the air supply valve should be not less than 250 N. The test shall be carried out in accordance with 6.7. 5.7.4 Connection of air supply system and full face mask The connection mode of the air respirator air supply system and the full face mask can adopt fixed joints, special joints or threaded joints. Full face joint The bonding strength should be not less than 500 N. The test shall be carried out in accordance with the provisions of 3.11 in GB/T 2891-1995, and no shedding shall occur. 5.7.5 Interchangeability of high, medium and low voltage connections High, medium and low voltage connections shall not be interchangeable. The test shall be carried out in accordance with 6.3. 5.8 Mask 5.8.1 The mask should cover at least the eyes, nose and mouth of the wearer. 5.8.2 The mask tight-fitting frame should closely fit the contour of the human face without obvious tenderness; the co-determining system of the mask should have sufficient strength and elasticity And should be adjustable according to the needs of the wearer. The leakage coefficient of the mask should not be greater than 0.005%. Test according to GB/T 2891-1995 3.1. 5.8.3 The mask should have a wide field of vision, and the vision should be true and undistorted. The total visual field retention rate is not less than 70%, and the double 0 visual field retention rate is not less than 55%. The lower field of view is not less than 35 °. The test is carried out in accordance with 3.3 of GB/T 2891-1995. 5.8.4 The mask lens should have a certain resistance to impact and rupture. It should be able to withstand a speed of 44.2 m/s and a diameter of 3 Shock. The test is carried out according to the method in Appendix B. 5.8.5 The light transmittance of the mask lens should not be less than 85%. The test is carried out in accordance with the provisions of GB 2410. 5.8.6 The mask should be sufficiently airtight. When the pressure in the mask is 4.7 kPa ± 0.5 kPa, the pressure drop within 1 minute should not be greater than 40 Pa; or when using underwater airtight inspection method, no bubbles should appear in the joints of the mask. Test according to GB/T 2891-1995 3.4 Specify or use underwater airtight methods. 5.8,7 The carbon dioxide content of the mask should not exceed 1%. The test shall be carried out in accordance with the provisions of 6.8. 5.9 Carrying gear The test is carried out in accordance with 6.4. 5.9.1 The structure and shape of the harness should conform to ergonomic principles, without local tenderness. 5.9.2 The harness should enable the wearer to quickly and easily wear and remove air respirators without assistance. The harness should be adjustable and should not be without Intentionally slide or shift. 5.9.3 In the practical performance test, the wearer should not feel uncomfortable and nervous when wearing the air respirator; When working in a space-constrained environment, the air respirator should interfere with the wearer's activities as little as possible. 5.9.4 During the entire performance test, the harness should not slide, shift, or still allow the air respirator to be firmly carried on the The carrier's body. 5.10 Practical performance 5.10.1 Air respirators shall be subjected to practical tests under real conditions. These practical tests are used to check other laboratories specified in this standard Unidentified air respirator defect. 5.10.2 In any activity, if any subject fails to complete the specified activity because the air respirator is not suitable for its intended use Motion, the air respirator is deemed unqualified. 5.10.3 After completing all activities, the subject should answer the following questions. a) the ease of putting on and taking off; b) the fastness, adjustability, locking and comfort of the headband; c) the comfort of the mask; d) compatibility with the skin; e) the comfort of the harness and harness; f) wearing comfort and balance; g) clear vision, including security, as seen through the eye window of the mask; h) field of view; i) call clarity; j) Locking of buckles and connectors; k) the reach of control valves and pressure gauges; l) the operability and effectiveness of the alarm; m) operability of breathing hoses; n) the effect of breathing hoses on the free movement of the head; O) breathing comfort (eg temperature, pressure and volume); P) Any tension or discomfort due to air velocity or distribution q) other opinions on the structural design and the materials used; r) Other opinions reported by the subjects. The testing organization will use these questions to determine whether the test air breathing apparatus can pass the test. Steel ball 5.10.4 The testing organization shall provide full details of the practical tests that indicate a defect. Note. This enables other testing institutions to repeat these tests in order to evaluate the conclusions reached. The test shall be carried out in accordance with the provisions of 6.4 and 6.5.2. 5.1 1 Temperature and flame adaptability 5.11.1 Temperature adaptability 5.11.1.1-General requirements The air respirator should work without failure between 3CTC ~ 6CTC. Air respirators for special temperature ranges should be operated as specified Test and indicate temperature conditions. Air respirators shall meet 5.11.1.2 and 5.11.1.3 at the highest and lowest temperatures in the specified temperature range. Prescribed breathing resistance. 5.11.1.2 Respiratory resistance at low temperatures Positive pressure should be maintained in the breathing chamber of the air respirator mask, and the expiratory resistance during the test should not be greater than 1 kPa. Test according to 6.5.1.1 Required. 5.11.1.3 Breathing resistance under high temperature conditions Positive pressure should be maintained in the breathing chamber of the air respirator mask, and the expiratory resistance during the test should not be greater than 1 kPa. Test according to 6.5.1.2 Required. 5.1 1.2 Component flame adaptability 5.11.2.1 The materials of the harness and buckle shall have flame retardant properties, and their afterflame time shall not be greater than 5 s, and the average damage length of the fabric material shall not be Greater than 100 5.11.2.2 Masks, breathing hoses (connected to the masks), medium pressure hoses, and air supply valves shall have "Xiao Xi" characteristics, that is, the materials used shall be flame retardant Performance, afterflame time should not be greater than 5 5.11.2.3 Components may be deformed after the test, and they should still be airtight, meet the requirements of breathing resistance, and there should be no interruption of air supply. The test shall be carried out in accordance with the provisions of 6.5.1.3 and 6.9. 5.1 1.3 Thermal radiation resistance The masks, breathing hoses (connected to the mask), pressure hoses, and air supply valves of fire and emergency air respirators shall be subjected to heat radiation test. Although it may be deformed after the heat radiation test for 20 minutes, it should be able to remain sealed and meet the respiratory resistance requirements specified in 5.21, which should not occur The air supply is cut off, it is considered that these parts have heat radiation resistance. The test shall be carried out in accordance with 6.10. 5.1 2 Anti-particle performance The components of compressed air supplied to the air respirator shall be capable of filtering particulates in the compressed air. The test shall be carried out in accordance with 6.3. 5.1 3 High-voltage components 5.13.1 Metal high-pressure pipes, valves and connecting parts have been proved by tests to be able to withstand 1.5 times the rated working pressure of the gas cylinder. 5.13.2 Non-metallic parts have been proven to be able to withstand 2 times the rated working pressure of the cylinder The test shall be carried out in accordance with the provisions of 6.1 and 6.3. 5.1 4 Cylinder 5.14.1 Steel gas cylinders shall meet the requirements of GB 5099. 5.14.2 Compound gas cylinders shall comply with the regulations of DOT-CFFC. The test shall be carried out in accordance with 6.3. 5.1 5 cylinder valve 5.15.1 The design of the cylinder valve shall ensure safety performance. 5.15.2 The gas cylinder valve shall be able to prevent the clogging and transmission of particles which may be contained in the compressed air. 5.15.3 The structure of the gas cylinder valve shall be such that the valve handle cannot be completely unscrewed from the valve body during normal operation. The opening direction of the gas cylinder valve is reversed Hour hand. 5.15.4 The structure of the gas cylinder valve shall be such that the gas cylinder valve will not be inadvertently closed after opening. . The test is carried out in accordance with the provisions of 6.3, 6.5.1.3 and GB/T 5455. mm S o 5.15.5 The gas cylinder valve shall be provided with a bursting diaphragm, and its bursting pressure shall be (1.2 ~ 1.5) times the rated working pressure of the gas cylinder. 5.15.6 The thread of the output end of the gas cylinder valve is internal thread, the thread size is G5/8, and its tolerance should meet the requirements of Table 1 in GB/T 7307-2001. Regulations. The test shall be carried out in accordance with 6.3 and 6.4. 5.16 Pressure reducer 5.16.1 General requirements 5.16.1.1 When an air respirator is provided with a pressure reducer, any adjustable part of the pressurizing section should be firmly locked and properly sealed Measures that enable illegal regulation to be observed. 5.16.1.2 When the downstream components of an air respirator cannot support the full pressure in the cylinder, a pressure relief valve should be provided. The test shall be carried out in accordance with 6.3. 5.16.2 Air respirator with pressure relief valve 5.16.2.1 The pressure relief valve of the pressure reducer shall be capable of passing an air flow of 400 L/min at a pressure not exceeding 3 MPa. 5.16.2.2 After the pressure relief valve of the pressure reducer is activated, the inhalation resistance and exhalation resistance shall not be greater than 2.5 kPa......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 16556-2025_English be delivered?Answer: Upon your order, we will start to translate GB 16556-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB 16556-2025_English with my colleagues?Answer: Yes. 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