Severe accident source term characteristics for selected Peach Bottom sequences predicted by the MELCOR Code
Abstract
The purpose of this report is to compare in-containment source terms developed for NUREG-1159, which used the Source Term Code Package (STCP), with those generated by MELCOR to identify significant differences. For this comparison, two short-term depressurized station blackout sequences (with a dry cavity and with a flooded cavity) and a Loss-of-Coolant Accident (LOCA) concurrent with complete loss of the Emergency Core Cooling System (ECCS) were analyzed for the Peach Bottom Atomic Power Station (a BWR-4 with a Mark I containment). The results indicate that for the sequences analyzed, the two codes predict similar total in-containment release fractions for each of the element groups. However, the MELCOR/CORBH Package predicts significantly longer times for vessel failure and reduced energy of the released material for the station blackout sequences (when compared to the STCP results). MELCOR also calculated smaller releases into the environment than STCP for the station blackout sequences.
- Authors:
-
- Oak Ridge National Lab., TN (United States)
- Publication Date:
- Research Org.:
- Nuclear Regulatory Commission, Washington, DC (United States). Div. of Safety Issue Resolution; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- Nuclear Regulatory Commission, Washington, DC (United States)
- OSTI Identifier:
- 10182846
- Report Number(s):
- NUREG/CR-5942; ORNL/TM-12229
ON: TI93041291; TRN: 93:021903
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Technical Report
- Resource Relation:
- Other Information: DN: 1 copy to Berta Perez (ESTSC); PBD: Sep 1993
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 22 GENERAL STUDIES OF NUCLEAR REACTORS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; PEACH BOTTOM-2 REACTOR; LOSS OF COOLANT; SOURCE TERMS; PEACH BOTTOM-3 REACTOR; BLACKOUTS; M CODES; CONTAINMENT; COMPUTER CALCULATIONS; CONTAINMENT SYSTEMS; S CODES; ECCS; HEAT TRANSFER; HYDRAULICS; REACTOR SAFETY; 220900; 210100; 990200; POWER REACTORS, NONBREEDING, LIGHT-WATER MODERATED, BOILING WATER COOLED; MATHEMATICS AND COMPUTERS
Citation Formats
Carbajo, J J. Severe accident source term characteristics for selected Peach Bottom sequences predicted by the MELCOR Code. United States: N. p., 1993.
Web. doi:10.2172/10182846.
Carbajo, J J. Severe accident source term characteristics for selected Peach Bottom sequences predicted by the MELCOR Code. United States. https://doi.org/10.2172/10182846
Carbajo, J J. 1993.
"Severe accident source term characteristics for selected Peach Bottom sequences predicted by the MELCOR Code". United States. https://doi.org/10.2172/10182846. https://www.osti.gov/servlets/purl/10182846.
@article{osti_10182846,
title = {Severe accident source term characteristics for selected Peach Bottom sequences predicted by the MELCOR Code},
author = {Carbajo, J J},
abstractNote = {The purpose of this report is to compare in-containment source terms developed for NUREG-1159, which used the Source Term Code Package (STCP), with those generated by MELCOR to identify significant differences. For this comparison, two short-term depressurized station blackout sequences (with a dry cavity and with a flooded cavity) and a Loss-of-Coolant Accident (LOCA) concurrent with complete loss of the Emergency Core Cooling System (ECCS) were analyzed for the Peach Bottom Atomic Power Station (a BWR-4 with a Mark I containment). The results indicate that for the sequences analyzed, the two codes predict similar total in-containment release fractions for each of the element groups. However, the MELCOR/CORBH Package predicts significantly longer times for vessel failure and reduced energy of the released material for the station blackout sequences (when compared to the STCP results). MELCOR also calculated smaller releases into the environment than STCP for the station blackout sequences.},
doi = {10.2172/10182846},
url = {https://www.osti.gov/biblio/10182846},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Sep 01 00:00:00 EDT 1993},
month = {Wed Sep 01 00:00:00 EDT 1993}
}