GB 21976.7-2012 PDF EnglishUS$150.00 · In stock · Download in 9 seconds
GB 21976.7-2012: Escape apparatus for building fire - Part 7: Filtering respiratory protective devices for self-rescue from fire Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB 21976.7-2012: Escape apparatus for building fire - Part 7: Filtering respiratory protective devices for self-rescue from fire---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB21976.7-2012 NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 13.220.10 C 85 Escape apparatus for building fire - Part 7.Filtering respiratory protective devices for self-rescue from fire Issued on. NOVEMBER 05, 2012 Implemented on. JUNE 01, 2013 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of PRC; Standardization Administration of PRC. Table of ContentsForeword... 3 1 Scope... 4 2 Normative references... 4 3 Terms and definitions... 4 4 Type, model... 5 5 Technical requirements... 6 6 Test methods... 8 7 Inspection rules... 16 8 Marking, packaging, transportation, storage... 18ForewordClauses 5.1 ~ 5.8, clause 7, clause 8.1.1 of this part are mandatory. The rest are recommended. GB 21976 “Escape apparatus for building fire” is divided into the following parts. - Part 1.Equipment guide; - Part 2.Automatic and repetitive rescue controlled descent device; - Part 3.Escape ladder; - Part 4.Escape slide; - Part 5.Escape device; - Part 6.Escape rope; - Part 7.Filtering respiratory protective devices for self-rescue from fire; - Part 8.Chemical oxygen respiratory protective devices for self-rescue from fire; ... This part is the part 7 of GB 21976. This part was drafted in accordance with the rules given in GB/T 1.1-2009. This part refers to EN 403.2004 “Respiratory protective devices for self-rescue - Filtering devices with hood for escape from fire - Requirements, testing, marking” (English version). This part was proposed by the Ministry of Public Security of the People's Republic of China. This part shall be under the jurisdiction of the National Fire Protection Standardization Technical Committee Fire Equipment Parts Subcommittee (SAC/TC 113/SC 5). Drafting organization of this part. Shanghai Fire Research Institute of the Ministry of Public Security. The main drafters of this part. Ling Xinliang, Dai Guoding, Yang Xiaoshi, Wang Limiao, Zeng Yuelei, Yang Xiaohua. This part is the first release. Escape apparatus for building fire - Part 7.Filtering respiratory protective devices for self-rescue from fire1 ScopeThis part of GB 21976 specifies the type, model, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage, other requirements of the filtering respiratory protective devices for self-rescue from fire. This part applies to the disposable filtering respiratory protective devices for self-rescue from fire worn by personnel when they are in a place where the oxygen concentration in the air is not less than 17% in the event of a fire.2 Normative referencesThe following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this standard. GB 2626-2006 Respiratory protective equipment - non-powered air-purifying particle respirator GB 2890-2009 Respiratory protection - Non-powered air-purifying respirators3 Terms and definitionsThe following terms and definitions apply to this document. 3.1 Filtering respiratory protective devices for self-rescue from fire A respirator for removing harmful gases such as carbon monoxide and smoke by adsorption, absorption, catalysis and direct filtration of a filtering device, for a person to escape in the event of a fire. 3.2 Half mask A mask which closely matches the face, covers the mouth and nose, or covers the mouth, nose, jaw. 3.3 Penetrating concentration The concentration of the medium gas as measured after passing through the filter device. 3.4 Protective time Under the specified test conditions, the time from when the medium gas is introduced into the filter device to the time when the concentration of the penetrated medium gas reaches a defined value. 3.5 Inhalation temperature Under specified test conditions, the temperature of the inhalation airflow as measured at 40 mm from the filter device of the specimen.4 Type, model4.1 Type According to the standby state of the respirator, it is divided into storage type and portable type. The representation of storage type is omitted. The portable type is represented by D. 4.2 Model The preparation of the respirator’s model shall meet the following requirements. Example.5 Technical requirements5.1 Structure 5.1.1 The filtering respiratory protective devices for self-rescue from fire (hereinafter referred to as “respirator”) shall consist of a protective hood, a filtering device, a half mask, or otherwise a protective hood and a filtering device. 5.1.2 The basic design dimensions of the respirator shall be for adults. 5.2 Wearing mass The wearing mass of the respirator shall not exceed 1000 g. 5.3 Materials 5.3.1 Surface quality of metal materials All metal parts of the respirator shall be subjected to corrosion-resistance treatment. The surface shall be free from such defects as cracks, wrinkles, burrs. 5.3.4 Strength of packaging materials The respirator shall be sealed and packaged. The packaging material shall have sufficient fastness. 5.4 Resistance to mechanical impact and environmental change The respirator shall have sufficient stability for the specified mechanical load, ambient temperature and humidity changes. 5.5 Protective performance 5.5.1 Protective performance for carbon monoxide During the rated protective time, in any single 5 min process, the time-weighted average of the carbon monoxide’s penetrating concentration shall not exceed 200 mL/m3, the inhalation temperature shall not exceed 65 °C, the inhalation resistance shall not exceed 800 Pa, the exhalation resistance shall not exceed 300 Pa. 5.6 Protective hood 5.6.1 Air-leakage coefficient The air-leakage coefficient of the eye area of the protective hood shall not exceed 20%. The air-leakage coefficient of the breathing zone shall not exceed 5%. If there is no half mask in the respirator, the air-leakage coefficient of the protective hood shall not exceed 5%. 5.7 Mechanical structural integrity of the respirator at high concentrations of carbon monoxide Under high concentrations of carbon monoxide, the respirator shall maintain its mechanical structural integrity and not pose a hazard to the wearer. 5.8 Connection strength The connection between the filter device and the protective hood can withstand an axial tensile force of not less than 50 N. 5.9 Personnel wearing suitability Without the aid of tools, it shall be able to quickly open the seal of the filter device of the respirator. The wear shall be quick and easy. The strap shall be quick to tighten and disengage.6 Test methods6.1 Structural inspection Use visual inspection and subjective perception for determination. 6.2 Determination of wearing mass Use the electronic scale which has a range of 0 g ~ 3000 g and an accuracy of grade-III to measure the wearing mass of the respirator. 6.3 Material test 6.3.1 Surface quality of metal materials Use visual inspection to determine it. 6.3.4 Strength test of packaging materials 6.3.4.1 Anti-drop performance test Allow the packed respirators (storage-type respirators are not tested) to drop from a height of 1.5 m to a flat concrete floor for 6 times at different azimuth angles. 6.3.4.2 Anti-perforation and anti-tear performance test of packaging materials 6.4 Test of resistance to mechanical collision and environmental change 6.4.1 Test of resistance to mechanical collision It is carried out according to the provisions of 6.2.2.2 and 6.2.2.3 of GB 2626- 2006.The test time of the storage-type respirator is 20 min. The test time of the portable respirator is 100 min. 6.4.2 Test of resistance to environmental change 6.5 Test of protective performance 6.5.1 Test of protection of carbon monoxide 6.5.1.1 Test conditions The test conditions are as shown in Table 1. 6.5.1.3 Test preparation The test preparation is carried out as follows. 6.5.1.5 Record The record shall include the following. 6.5.2 Test of smoke-filter performance The test of smoke-filtering performance is carried out according to the provisions of 7.9.2 ~ 7.9.5 of GB 2890-2009. 6.6 Test of performance of protective hood 6.6.1 Test of air-leakage coefficient The test of the air-leakage coefficient of the protective hood shall be carried out in accordance with the provisions of 6.6.2 ~ 6.6.5 of GB 2890-2009. 6.6.2 Test of view field The test of visual field is carried out according to the provisions of 6.8.2 ~ 6.8.5 of GB 2890-2009. 6.6.3 Test of carbon dioxide content in inhaled gases 6.8 Test of connection strength Use a dynamometer to measure the tension in the direction as shown in Figure 4. 6.9 Test of personnel wearing suitability Only those respirators that have passed the inspections of 5.1 ~ 5.8 can be used for the wearing suitability test.7 Inspection rules7.1 Exit-factory inspection 7.1.1 The product shall pass the inspection by the quality inspection department of the manufacturer and accompanied by the product certificate before exit- factory. 7.2 Type inspection 7.2.1 The product shall be subjected to type inspection in one of the following cases. 7.2.2 The batch size of products as provided for type inspection shall be not less than 200.The type inspection shall be carried out according to Table 4. 7.2.3 When all the type inspection items comply with the requirements of this part, it is qualified.8 Marking, packaging, transportation, storage8.1 Marking 8.1.1 At an eye-catching part of a single respirator, it shall be indicated of the following. 8.1.2 The surface of the package shall have the following contents. 8.1.3 The product’s instruction manual shall contain at least the following. 8.2 Packaging 8.3 Transportation It shall not be mixed with oil or corrosive chemicals during transportation. It shall have measures to prevent sun exposure and rain. 8.4 Storage The product shall be stored in a well-ventilated warehouse which has a temperature of 0 °C~40 °C. It shall be kept away from heat sources and shall not be stored together with flammable or corrosive materials. 8.5 Expiration date of product The product is usually valid for 3 years. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB 21976.7-2012 be delivered?Answer: The full copy PDF of English version of GB 21976.7-2012 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB 21976.7-2012_English with my colleagues?Answer: Yes. 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