Safety analysis of ATWS accident mitigating system improving design for China advanced research reactor
Creators
- 1. China Inst. of Atomic Energy, Beijing (China). Dept. of Reactor Engineering Research and Design
Description
The safety analysis of ATWS (Anticipated Transient Without Scram) accident mitigating system improving design, based on the most serious case--ATWS induced by uncontrolled control rod withdrawal is performed for China Advanced Research Reactor (CARR). Many calculations are done at different maximum withdrawal velocity and with different modes of dropping velocity of control rod (dropping by gravity or dropping within 1.5 seconds). The maximum withdrawal velocity admitted by CARR is found. It is confirmed that the withdrawal velocity of 4 mm/s is selected as the design limit of maximum velocity of control rod in any case. In addition, sensitivity analysis is carried out between realistic analysis and conservative analysis modes. The results show that this setting and the maximum velocity are reasonable and safe for CARR
Additional details
Publishing Information
- Journal Title
- Atomic Energy Science and Technology
- Journal Volume
- 37
- Journal Issue
- 6
- Journal Page Range
- p. 523-527
- ISSN
- 1000-6931
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 35080642
- Subject category
- S22: GENERAL STUDIES OF NUCLEAR REACTORS;
- Descriptors DEI
- ATWS; CHINA; CONTROL ELEMENTS; MITIGATION; MODIFICATIONS; REACTOR SAFETY; RESEARCH REACTORS; SAFETY ANALYSIS; SENSITIVITY ANALYSIS; VELOCITY
- Descriptors DEC
- ACCIDENTS; ASIA; DESIGN BASIS ACCIDENTS; REACTOR ACCIDENTS; REACTOR COMPONENTS; REACTORS; RESEARCH AND TEST REACTORS; SAFETY