GB/T 42292-2022 in English
VALIDOccupational exposure dose assessment of pressurized water reactor nuclear power plant
- Issued on:2022-12-30
- Implemented on:2023-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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《GB/T 42292-2022压水堆核电厂职业照射剂量评价》由TC58（全国核能标准化技术委员会）归口，TC58SC2（全国核能标准化技术委员会辐射防护分会）执行，主管部门为国家标准委。
Introduction
1. Background and significance of standard formulation
As an important energy facility, pressurized water reactor nuclear power plants will inevitably generate radiation during operation. In order to protect workers from occupational exposure and ensure the effectiveness of radiation protection measures, the GB/T42292-2022 "Occupational Exposure Dose Evaluation for Pressurized Water Reactor Nuclear Power Plants" standard came into being. This standard aims to standardize the occupational exposure dose evaluation methods during the design and operation stages of pressurized water reactor nuclear power plants to ensure the health and safety of workers.
2. Main contents of occupational exposure dose evaluation
Occupational exposure dose evaluation includes two aspects: personal dose and collective dose:
- Personal dose: Evaluate the effective dose of workers due to external and internal exposure to ensure that it does not exceed the dose limit specified by the state.
- Collective dose: Assess the total effective dose received by all nuclear power plant workers due to occupational exposure and optimize radiation protection measures to reduce the overall risk.
3. Dose assessment methods and technical requirements
The standard specifies detailed dose assessment methods:
| Evaluation stage | Dose type | Main technical requirements |
|---|---|---|
| Design stage | Personal dose Collective dose | - Follow the principle of radiation protection optimization - Evaluate dose through theoretical calculations and operational experience feedback data |
| Operation stage | Personal dose Collective dose | - Regularly monitor staff doses - Establish medium- and long-term dose management goals - Optimize radiation protection measures |
Note: Dose evaluation needs to be combined with actual operating conditions to ensure the accuracy and operability of the evaluation results.
4. Comparison of standard framework and optimization suggestions
The following is a comparison of the main dimensions of the standard with other relevant radiation protection standards:
| Standard dimensions | GB/T42292-2022 | Internationally accepted standards | Optimization suggestions |
|---|---|---|---|
| Dose limits | - Personal dose limit: 50mSv/year - Collective dose limit: no fixed upper limit | - ICRP recommendation: 20-50mSv/year | It is recommended to further optimize dose management targets in combination with international experience. |
| Monitoring requirements | - Regularly monitor the dose of staff - Establish dose statistics report | - Real-time monitoring of dose data | It is recommended to introduce an intelligent dose monitoring system. |
5. Implementation suggestions
To ensure the effective implementation of the standard, the following suggestions are put forward:
- Establish a professional radiation protection team: responsible for dose evaluation, monitoring and optimization.
- Improve monitoring equipment and data management: Use advanced dose measurement equipment and establish a complete dose database.
- Strengthen training and publicity: Regularly train staff on radiation protection knowledge to ensure that the standard requirements are deeply rooted in the hearts of the people.
- Optimize radiation protection measures: formulate special protection plans for high-risk operations to reduce occupational radiation doses.
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