HTGR accident initiation and progression analysis status report. Phase II risk assessment
The primary purpose of this report is to document AIPA studies performed on the HTGR since issuance of the eight volumes. Implementation of the R and D recommendations is discussed, which includes consideration of new initiating events and accident sequences, modeling of fission product release from fuel particles, factors affecting PCRV plateout during core heatup, and the effect of earthquakes on plant operation. The Phase II risk assessment of core heatup events is presented. The major elements of the study include event trees and probability assessments, physical process evaluations, and evaluation of fission product transport and the associated radiological consequences. A risk assessment of accidents initiated by failures of the steam generators, including economizer-evaporator-superheater sections and the reheaters, is presented and the impact of various plant design options is quantified.
- Research Organization:
- General Atomics, San Diego, CA (United States)
- DOE Contract Number:
- EY-76-C-03-0167-065
- OSTI ID:
- 6649461
- Report Number(s):
- GA-A-15000; TRN: 78-017211
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
HTGR TYPE REACTORS
REACTOR ACCIDENTS
REACTOR SAFETY
FAILURES
FAULT TREE ANALYSIS
FISSION PRODUCT RELEASE
RADIATION DOSES
RADIATION HAZARDS
RADIOACTIVITY TRANSPORT
REACTOR COMPONENTS
ACCIDENTS
DOSES
GAS COOLED REACTORS
GRAPHITE MODERATED REACTORS
HAZARDS
HEALTH HAZARDS
REACTORS
SAFETY
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
220900* - Nuclear Reactor Technology- Reactor Safety
210300 - Power Reactors
Nonbreeding
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