GB/T 12787-2020
Radiation protection instrumentation—Warning equipment for criticality accidents

Standard No.

GB/T 12787-2020

Language

Chinese

Release Date

2020

Published By

国家市场监督管理总局、中国国家标准化管理委员会

Lastest

GB/T 12787-2020

Replace

GB/T 12787-1991

Scope

This standard applies to devices that issue alarms by detecting gamma radiation and/or neutrons produced by critical accidents. This standard is mainly used for the design of equipment, and does not involve the layout requirements of the equipment. The layout requirements and usage methods of critical alarm equipment are described in ISO7753 and ISO11320. The main purpose of criticality alarm equipment is to detect radiation produced by criticality accidents and to warn personnel. The equipment should provide an appropriate alarm, in the event of a critical accident, to warn the critical accident area and the adjacent affected area (usually the entire nuclear facility) personnel. The purpose of this alarm is to trigger an evacuation alarm and reduce the possibility of personnel being severely exposed. The equipment may also have auxiliary functions, such as: continuous measurement of radiation levels during the setting of the accident, the equipment only does not affect the critical characteristics described in this standard alarm and important (for example: reliability), you can use these auxiliary functions. The objectives of this standard are to specify general characteristics, radiation detection, environmental, mechanical, electromagnetic compatibility and documentation requirements, and to establish acceptance criteria for critical accident alarm devices. This standard does not apply to photon or neutron dose equivalent (rate) measuring instruments or monitors, which are specified by IEC60532, IEC60846 (all parts), IEC61017 (all parts) and IEC61005. This standard also does not apply to equipment and components of nuclear reactor control and safety systems.

GB/T 12787-2020 Referenced Document

• IEC 60050 Amendment 3 - International Electrotechnical Vocabulary (IEV) - Part 904: Environmental standardization for electrical and electronic products and systems
• IEC 61508 Functional Safety of Electrical/Electronic/programmable Electronic Safety - Related Systems Set *** Contains IEC 61508-1 Through IEC 61508-7*** (Edition 2.0; ***NOT AVAILABLE FOR CUSTOM COLLECTIONS AT THIS TIME*** All Retail Customer Must Purchase the DVD
• IEC 62706 Radiation protection instrumentation - Recommended climatic, electromagnetic and mechanical performance requirements and methods of tests
• ISO 7753:1987 Nuclear energy; Performance and testing requirements for criticality detection and alarm systems

GB/T 12787-2020 history

• 2020 GB/T 12787-2020 Radiation protection instrumentation—Warning equipment for criticality accidents
• 1991 GB/T 12787-1991 Warning equipment for criticality accidents