GBZ 122-2002 Ionization Smoke Fire Detector Health Protection Standard GBZ122-2002 Standard download decompression password: www.bzxz.net

Ics13.100
National Occupation of the People's Republic of China
! Health standards
GBZ122-2002
Health protection standards for ionization smoke fire detectorsRadiological protection standardsforionizationsmokefiredetectors2002-04-08 Issued
Ministry of Health of the People's Republic of China
2002-06-01 Implementation
Normative references
Terms and definitions
Radiological protection requirements for products
Protection requirements for production and disassembly and cleaning
Protection requirements for storage, transportation, installation, maintenance and salesProtection requirements for use
Product protection inspection rules
Appendix A (Normative Appendix) Inspection method for surface contamination and leakage of radioactive sources of ionization smoke fire detectors
This standard is formulated in accordance with the "Law of the People's Republic of China on the Prevention and Control of Occupational Diseases". If the original standard GB16365-1996 is inconsistent with this standard, this standard shall prevail. Chapters 4 to 8 and Appendix A of this standard are mandatory contents, and the rest are recommended contents. Appendix A of this standard is a normative appendix.
This standard is proposed and managed by the Ministry of Health.
The drafting units of this standard are: Guangdong Provincial Institute of Labor Health and Occupational Disease Prevention and Control, Jiangsu Provincial Health and Epidemic Prevention Station and Industrial Hygiene Laboratory of the Ministry of Health. The main drafters of this standard are: Cha Yongru, Fan Baosheng, Zhou Shunyuan, Zhou Xiaoya and Wu Baode. The Ministry of Health of the People's Republic of China is responsible for interpreting this standard. Standard for hygienic protection of ionization smoke fire detectors 1 Scope
GBZ122-2002
This standard specifies the radiation health protection requirements for ionization smoke fire detector products and their production, operation, use, disassembly and disposal.
This standard applies to practices involving ionization smoke fire detectors and their radioactive sources that may cause exposure to personnel, but does not apply to protection in the production of radioactive sources for ionization smoke fire detectors. 2 Normative references
The clauses in the following documents become clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version shall apply to this standard.
GB4075 Classification of sealed radioactive sources
General provisions for sealed radioactive sources
GB4076
GB4792
Basic standard for radiation health protection
Radiation protection provisions
GB8703
GB11806
Regulations on safe transportation of radioactive materials
GB16353 Standard for radiation health protection of consumer products containing radioactive materials 3 Terms and definitions
The following terms and definitions apply to this standard. 3.1 Ionization smoke fire detector ionization smoke fire detector A detector that uses the principle of smoke particles changing the ionization current in the ionization chamber to realize fire alarm, and contains a radioactive source. It is a type of smoke detector, referred to as ion smoke detector. 4 Product radiation protection requirements
4.1 General requirements
4.1.1 The structure of the ion smoke detector should be such that the radioactive source is not easily exposed without special tools. 4.1.2 The external radiation dose equivalent rate at any point 0.1m away from the surface of the ion smoke detector shall not exceed IuSv/h
4.1.3 The radioactive contamination on the surface of the ion smoke detector shall not exceed the following limits: a radioactive material: 0.4Bq/cm2;Www.bzxZ.net
β radioactive material: 4Bq/cm2.
4:2 Requirements for radioactive sources
4.2.1 The total activity of the 241Am radioactive source in each ion smoke detector shall be controlled within the following limits according to its place of use:
a) For household use: 37kBq×2;
b) For use in other places: 370kBq×2.
If the radioactive source of the ion smoke fire detector uses other nuclides, it must be evaluated for radiation health protection. 4.2.2 The following contents shall be clearly and firmly marked on the ion smoke fire detector: a) The chemical symbol and activity of the radioactive nuclides used; b) The ionizing radiation symbol.
4.3 Requirements for packaging and instructions
4.3.1 The following contents shall be clearly and firmly marked on any packaging of ion smoke fire detector products: a) The chemical symbol of the radioactive nuclides contained in the product; b) The product batch number, manufacturing date and production unit 4.3.2 Ion smoke fire detector products must have instructions including the following contents: a) The chemical symbol and activity of the radioactive nuclides contained in the product; b) The name of the production unit and the registration certificate number of the radioisotope work permit; c) The product batch number and manufacturing date;
d) Precautions for radiation health protection;
e) The correct way to dispose of discarded products;
f) The product quality inspection certificate number and the name of the inspector. 4.4 Other requirements
4.41 Before the ion smoke fire detector is put into production, it shall undergo a radiation health protection assessment. The exposure of the product and its radioactive source to the public may comply with the provisions of GB16353. 4.4.2 Imported ion smoke fire detectors must comply with the requirements of Article 4.1, and shall comply with the requirements of Articles 4.2 and 4.3.
5 Protection requirements for production and disassembly and cleaning
5.1 The radiation work in the manufacture, assembly and disassembly and cleaning of ion smoke fire detectors shall be subject to radiation protection in accordance with the provisions of GB4792 and GB8703.
The disassembly and cleaning work site of ion smoke fire detectors shall have the necessary radiation protection conditions for open radiation workplaces.
5.2 In the manufacturing, assembly and disassembly and cleaning sites of ion smoke fire detectors, the storage volume of unused and discarded radioactive sources, semi-finished products and finished products of ion smoke fire detectors containing radioactive sources shall not exceed the maximum daily equivalent operation volume specified by the health authority for open workplaces.
5.3 Units engaged in the manufacture, assembly and disassembly of ion smoke fire detectors must establish and improve the payment, storage and accounting system for standby and abandoned radioactive sources, semi-finished and finished ion smoke fire detectors containing radioactive sources. 5,4 In the workplaces where ion smoke fire detectors are manufactured, assembled and disassembled, a system of safe operation, radiation dose monitoring and surface contamination monitoring shall be established and improved. 6 Protection requirements for storage, transportation, installation, maintenance and sales 6.1 Units engaged in the storage, transportation, installation, maintenance or sales of ion smoke fire detectors shall be approved by the health authorities: if their operations meet the national radiation work level, they must have the basic conditions for engaging in such radiation work and hold a radioactive isotope work permit registration certificate. 6.2 The transportation of ion smoke fire detectors shall comply with the provisions of GB11806. 6.3 The storage of ion smoke fire detectors shall meet the requirements specified in GB4792 and GB8703, and a payment, storage and accounting system for ion smoke fire detectors shall be established and improved. 7 Protection requirements for use
7.1 Units and individuals using ion smoke fire detectors shall not dismantle, replace, clean or arbitrarily discard ion smoke fire detectors.
7,2 Units and individuals using ion smoke fire detectors shall promptly return the discarded ion smoke fire detectors to the product production unit, import unit or their entrusted recycling unit according to the product purchase channel. 7.3 Units using ion smoke fire detectors shall file with the health authority and designate a person to be responsible for the purchase acceptance, custody and storage of ion smoke fire detectors; keep account books recording the use, standby and discarded ion smoke fire detectors and ion smoke fire detector installation location maps and conduct regular inspections to prevent loss: Once an ion smoke fire detector is found to be lost or stolen, it shall be reported to the health authority in a timely manner. 8 Product protection inspection rules
8.1 Type inspection
8.1.1 The production of ion smoke fire detectors must be subject to type inspection if it falls into any of the following situations:a) Before the new product goes into production:
b) Before two years of continuous production;
c) Before the next production after an interval of more than one year;
Before the product with major changes in design process or materials goes into production:
e) When the provincial health administrative department or above deems it necessary. 8.1.2 The items for type inspection of ion smoke fire detector products refer to the product radiation protection requirements specified in Chapter 4, other product standards related to ion smoke fire detectors, and the radiation protection performance requirements specified in the product standards for ion smoke fire detector radiation sources. 8.2 Inspection before product sales
8.2.1 Whether the ion smoke fire detector products meet the requirements of radiation health protection performance shall be inspected by the product manufacturer, and unqualified products shall not be shipped. 8.2.2 Whether the radioactive source used in the ion smoke fire detector meets the requirements of radiation health protection performance shall be inspected by the radioactive source manufacturer, and the ion smoke fire detector manufacturer shall review the radioactive source inspection certificate and conduct surface contamination inspection and leakage inspection on the radioactive source. The inspection methods shall refer to any of the methods listed in Chapter A1 and Chapter A2 of Appendix A (Normative Appendix). Unqualified radioactive sources shall not be used in the production of ion smoke fire detectors. 8.2.3 Before each batch of ion smoke fire detectors leaves the factory, the manufacturer and importer shall conduct sampling inspection of the quality of radiation health protection performance in accordance with the requirements of Chapter 4 when each batch of ion smoke fire detectors is imported. 8.3 The manufacturers and operators of ion smoke fire detectors and their competent departments shall strengthen protection management to ensure that ion smoke fire detector products meet the provisions of this standard and pass due inspections. 8.4: Provincial and above health administrative departments have the right to supervise and conduct random inspections on the radiation health protection performance of ion smoke detectors. Appendix A
(Normative Appendix)
Test methods for surface contamination and leakage of radioactive sources of ion smoke fire detectors? A1 Surface contamination test method
A1: 1 Wet wiping method
Use a highly hygroscopic soft material (such as filter paper, cotton) and apply a liquid that does not corrode the surface material of the radioactive source but can remove radioactive contamination 2, and wipe the entire surface of the radioactive source. Measure the radioactivity of the wiped material. If it is less than 185Bq, the surface of the radioactive source can be considered to be uncontaminated.
Note: 1) This test method refers to the provisions of GB4076 and GB4075. 2) Such as water or low-concentration detergents and chelating agents. A1.2 Immersion method
Immerse the radioactive source in a liquid that does not corrode the surface material of the radioactive source but can remove radioactive contamination, keep it at (50±5)℃ for 4h, take out the radioactive source, and measure the radioactivity of the liquid. If it is less than 185Bq, the radioactive source can be considered to be free of contamination.
A2 Leakage test method
A2.1 Wet wiping method
If the wet wiping method test result shows no surface contamination, the radioactive source can be considered to be free of leakage at the same time; if the wet wiping method test result shows surface contamination, the radioactive source should be decontaminated and tested again after 7 days. If the activity of the radioactive source is still less than 185Bq, the radioactive source can be considered to be free of leakage. A2.2 Immersion method
If the immersion method test result shows no surface contamination, the radioactive source can be considered to be free of leakage at the same time; if the immersion method test result shows surface contamination, the radioactive source should be decontaminated and tested again after 7 days. If the activity of the radioactive source is still less than 185Bq: the radioactive source can be considered to have no leakage.
A2.3 Dry wiping method
Place the radioactive source in an ultrasonic cleaner and clean it with a non-corrosive liquid such as trichloroethylene or ethylenediaminetetraacetic acid (EDTA) for 10 minutes, then rinse with water and then with acetone, and place it until dry. Wipe the surface of the radioactive source with a soft material (such as filter paper, cotton) and measure the radioactive activity of the wiped material. If it is less than 185Bq, wipe the surface of the radioactive source again after 7 days and measure the radioactive activity of the wiped material. If it is still less than 185Bq, the radioactive source can be considered to have no leakage.
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