Preliminary risks associated with postulated tritium release from production reactor operation
The Probabilistic Risk Assessment (PRA) of Savannah River Plant (SRP) reactor operation is assessing the off-site risk due to tritium releases during postulated full or partial loss of heavy water moderator accidents. Other sources of tritium in the reactor are less likely to contribute to off-site risk in non-fuel melting accident scenarios. Preliminary determination of the frequency of average partial moderator loss (including incidents with leaks as small as .5 kg) yields an estimate of /approximately/1 per reactor year. The full moderator loss frequency is conservatively chosen as 5 /times/ 10/sup /minus/3/ per reactor year. Conditional consequences, determined with a version of the MACCS code modified to handle tritium, are found to be insignificant. The 95th percentile individual cancer risk is 4 /times/ 10/sup /minus/8/ per reactor year within 16 km of the release point. The full moderator loss accident contributes about 75% of the evaluated risks. 13 refs., 4 figs., 5 tabs.
- Research Organization:
- Savannah River Lab., Aiken, SC (USA)
- DOE Contract Number:
- AC09-76SR00001
- OSTI ID:
- 5074917
- Report Number(s):
- DP-MS-87-143; CONF-880505-15; ON: DE88009307
- Resource Relation:
- Conference: 3. topical meeting on tritium technology in fission, fusion and isotopic applications, Toronto, Canada, 1 May 1988
- Country of Publication:
- United States
- Language:
- English
Similar Records
Consequences of tritium release to water pathways from postulated accidents in a DOE production reactor
Consequences of tritium release to water pathways from postulated accidents in a DOE production reactor
Related Subjects
TRITIUM PRODUCTION REACTORS
RISK ASSESSMENT
HEAVY WATER
INVENTORIES
LEAKS
MODERATORS
REACTOR ACCIDENTS
SAVANNAH RIVER PLANT
TRITIUM
ACCIDENTS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
IRRADIATION REACTORS
ISOTOPES
LIGHT NUCLEI
NATIONAL ORGANIZATIONS
NUCLEI
ODD-EVEN NUCLEI
OXYGEN COMPOUNDS
RADIOISOTOPES
REACTORS
US AEC
US DOE
US ERDA
US ORGANIZATIONS
WATER
YEARS LIVING RADIOISOTOPES
220500* - Nuclear Reactor Technology- Environmental Aspects
220900 - Nuclear Reactor Technology- Reactor Safety