Abstract
A probability safety assessment (PSA) of Level 1 (assessment of plant failures leading to the determination of core damage frequency) has been carried out for the NPP Kozloduy Units 5 and 6 (reactors WWER-1000). The scope of the study includes all significant accident initiators including seismic (earthquake) and fire initiators. Event trees for all initiators and fault trees for front line systems, support systems and major safety systems have been built. A distribution of the different initiators has been established as follows: internal initiators - 85%, seismic initiators - 5%, fire initiators- 10%. The loss of offsite power was identified as main contributor from the internal initiators with frequency 1,1.10{sup -4}/y. It is concluded that the safety functions of WWER-1000 are adequately covered by the safety systems. 4 refs., 2 tabs.
Citation Formats
Boyadzhiev, A, and Manchev, B.
Probability safety assessment of the Kozloduy-5 and Kozloduy-6 reactors.
Bulgaria: N. p.,
1995.
Web.
Boyadzhiev, A, & Manchev, B.
Probability safety assessment of the Kozloduy-5 and Kozloduy-6 reactors.
Bulgaria.
Boyadzhiev, A, and Manchev, B.
1995.
"Probability safety assessment of the Kozloduy-5 and Kozloduy-6 reactors."
Bulgaria.
@misc{etde_463241,
title = {Probability safety assessment of the Kozloduy-5 and Kozloduy-6 reactors}
author = {Boyadzhiev, A, and Manchev, B}
abstractNote = {A probability safety assessment (PSA) of Level 1 (assessment of plant failures leading to the determination of core damage frequency) has been carried out for the NPP Kozloduy Units 5 and 6 (reactors WWER-1000). The scope of the study includes all significant accident initiators including seismic (earthquake) and fire initiators. Event trees for all initiators and fault trees for front line systems, support systems and major safety systems have been built. A distribution of the different initiators has been established as follows: internal initiators - 85%, seismic initiators - 5%, fire initiators- 10%. The loss of offsite power was identified as main contributor from the internal initiators with frequency 1,1.10{sup -4}/y. It is concluded that the safety functions of WWER-1000 are adequately covered by the safety systems. 4 refs., 2 tabs.}
place = {Bulgaria}
year = {1995}
month = {Dec}
}
title = {Probability safety assessment of the Kozloduy-5 and Kozloduy-6 reactors}
author = {Boyadzhiev, A, and Manchev, B}
abstractNote = {A probability safety assessment (PSA) of Level 1 (assessment of plant failures leading to the determination of core damage frequency) has been carried out for the NPP Kozloduy Units 5 and 6 (reactors WWER-1000). The scope of the study includes all significant accident initiators including seismic (earthquake) and fire initiators. Event trees for all initiators and fault trees for front line systems, support systems and major safety systems have been built. A distribution of the different initiators has been established as follows: internal initiators - 85%, seismic initiators - 5%, fire initiators- 10%. The loss of offsite power was identified as main contributor from the internal initiators with frequency 1,1.10{sup -4}/y. It is concluded that the safety functions of WWER-1000 are adequately covered by the safety systems. 4 refs., 2 tabs.}
place = {Bulgaria}
year = {1995}
month = {Dec}
}