Experiment on scram for HCRDS in utmost accident at high temperature
Creators
- 1. Tsinghua Univ., Beijing (China). Inst. of Nuclear Energy Technology
Description
Based on the principle of hydraulic control rod driving system (HCRDS), a new scram method was given, which makes the pressure inside step cylinder release, to solve the scram problem of HCRDS in control rod hang-up accident and inversion conditions, and some experiments at high temperature have been done with the 1:1 experimental loop of the HCRDS for the 200 MW nuclear heating reactor (NHR-200). The results show that the control rod falls much quickly than that in normal condition. The differential pressure between the outside and inside of step cylinder can reach a big value after the pressure inside step cylinder release. In other word, the hydraulic control rod, which can overcome certain frictional resistance in control rod hang-up accident or its gravity in inversion conditions, may insert the nuclear reactor core. So the new method is an alternative for scram of HCRDS in utmost accident
Additional details
Publishing Information
- Journal Title
- Chinese Journal of Nuclear Science and Engineering
- Journal Volume
- 22
- Journal Issue
- 4
- Journal Page Range
- p. 331-335, 342
- ISSN
- 0258-0918
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 34043873
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Descriptors DEI
- BENCH-SCALE EXPERIMENTS; CONTROL ROD DRIVES; DYNAMIC PROGRAMMING; ERRORS; HYDRAULIC CONTROL DEVICES; PERFORMANCE; PROCESS HEAT REACTORS; ROD DROP ACCIDENTS; SAFETY ANALYSIS; SCRAM
- Descriptors DEC
- ACCIDENTS; CONTROL EQUIPMENT; EQUIPMENT; HYDRAULIC EQUIPMENT; PROGRAMMING; REACTIVITY INSERTIONS; REACTOR ACCIDENTS; REACTOR COMPONENTS; REACTOR SHUTDOWN; REACTORS; SHUTDOWN