An exploratory sensitivity study with the MACCS (MELCOR Accident Consequence Code System) Reactor Accident Consequence Model

Technical Report · Mon Jan 01 00:00:00 EST 1990

DOI:https://doi.org/10.2172/7257834· OSTI ID:7257834

Helton, J. C. ^[1]; Rollstin, J. A; Sprung, J. L. ^[2]; Johnson, J. D. ^[3]

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1. Arizona State Univ., Tempe, AZ (USA). Dept. of Mathematics
2. Sandia National Labs., Albuquerque, NM (USA)
3. Science Applications International Corp., Albuquerque, NM (USA)

An exploratory sensitivity study with the MELCOR Accident Consequence Code System (MACCS) is presented. This study was performed to provide (1) an indication of the possible impact of consequence modeling uncertainties on the results of an integrated probabilistic risk assessment for a nuclear power station, (2) guidance on important parameters to direct data acquisition for future uncertainty analyses with MACCS, (3) a check that MACCS is indeed operating as intended, and (4) insights on the effect of problem gridding on model resolution. The following consequence measures were investigated: early fatalities, prodromal vomiting, lung impairment, population dose (0 to 500 mi), population dose (0 to 10 mi), mean early fatality distance, maximum early fatality distance, mean early fatality risk, probability of one or more early fatalities, and amount of central processing unit (CPU) time required to evaluate MACCS. The analysis used techniques based on Latin hypercube sampling and regression analysis. 106 refs., 21 tabs.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: DOE/EH
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 7257834
• Report Number(s): SAND-88-1465; ON: DE90007614; TRN: 90-007904
• Country of Publication: United States
• Language: English

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