Abstract
SPSA is a flexible program for probabilistic safety analysis. It includes options for event and fault tree definition, data base management, cutset search, probability calculation, and uncertainty simulation. A simple test problem with about twenty gates and 27 basic events was calculated manually and with the SPSA program. The agreement of the results was practically exact for point value calculations with no common cause failures. For calculations with lognormally distributed unavailabilities and common cause failure models the agreement of the mean value core damage probability was good. Slight differences were found in the error factor of the result. This is supposed to be due to approximations in treating common cause failures and dependencies between minimal cutsets in the manual calculations. (orig.). (5 refs., 3 figs., 13 tabs.).
Citation Formats
Sandberg, J, and Virolainen, R.
Comparison of the core damage probability by the SPSA computer program and by analytical methods - a simplified loss of offsite power. Validation of the SPSA program.
Finland: N. p.,
1993.
Web.
Sandberg, J, & Virolainen, R.
Comparison of the core damage probability by the SPSA computer program and by analytical methods - a simplified loss of offsite power. Validation of the SPSA program.
Finland.
Sandberg, J, and Virolainen, R.
1993.
"Comparison of the core damage probability by the SPSA computer program and by analytical methods - a simplified loss of offsite power. Validation of the SPSA program."
Finland.
@misc{etde_10152753,
title = {Comparison of the core damage probability by the SPSA computer program and by analytical methods - a simplified loss of offsite power. Validation of the SPSA program}
author = {Sandberg, J, and Virolainen, R}
abstractNote = {SPSA is a flexible program for probabilistic safety analysis. It includes options for event and fault tree definition, data base management, cutset search, probability calculation, and uncertainty simulation. A simple test problem with about twenty gates and 27 basic events was calculated manually and with the SPSA program. The agreement of the results was practically exact for point value calculations with no common cause failures. For calculations with lognormally distributed unavailabilities and common cause failure models the agreement of the mean value core damage probability was good. Slight differences were found in the error factor of the result. This is supposed to be due to approximations in treating common cause failures and dependencies between minimal cutsets in the manual calculations. (orig.). (5 refs., 3 figs., 13 tabs.).}
place = {Finland}
year = {1993}
month = {Nov}
}
title = {Comparison of the core damage probability by the SPSA computer program and by analytical methods - a simplified loss of offsite power. Validation of the SPSA program}
author = {Sandberg, J, and Virolainen, R}
abstractNote = {SPSA is a flexible program for probabilistic safety analysis. It includes options for event and fault tree definition, data base management, cutset search, probability calculation, and uncertainty simulation. A simple test problem with about twenty gates and 27 basic events was calculated manually and with the SPSA program. The agreement of the results was practically exact for point value calculations with no common cause failures. For calculations with lognormally distributed unavailabilities and common cause failure models the agreement of the mean value core damage probability was good. Slight differences were found in the error factor of the result. This is supposed to be due to approximations in treating common cause failures and dependencies between minimal cutsets in the manual calculations. (orig.). (5 refs., 3 figs., 13 tabs.).}
place = {Finland}
year = {1993}
month = {Nov}
}