Abstract
The Finnish nuclear power plant units Loviisa 1 and 2 as well as TVO I and II were in operation for almost the whole third quarter of 1991. Longer interruptions in electricity generation were caused by the annual maintenances of the Loviisa plant units. The load factor average was 81.7 %. In a test conducted during the annual maintenance outage of Loviisa 1 it was detected that the check valve of the discharge line of one pressurized emergency make-up tank did not open sufficiently at the tank`s hydrostatic pressure. In connection with a 1988 modification, a too tightly dimensioned bearing had been mounted on the valve`s axle rod and the valve had not been duly tested after the operation. The event is classified as Level 1 on the International Nuclear Event Scale. Other events in this quarter which are classified according to the International Nuclear Event Scale are Level Zero (Below Scale). Occupational radiation doses and releases of radioactive material off-site were below authorised limits in this quarter. Only small amounts of radioactive materials originating in nuclear power plants were detected in samples taken in the vicinity of nuclear power plants.
Tossavainen, K
[1]
- ed.
Citation Formats
Tossavainen, K.
Operation of Finnish nuclear power plants. Quarterly report 3rd quarter, 1991.
Finland: N. p.,
1992.
Web.
Tossavainen, K.
Operation of Finnish nuclear power plants. Quarterly report 3rd quarter, 1991.
Finland.
Tossavainen, K.
1992.
"Operation of Finnish nuclear power plants. Quarterly report 3rd quarter, 1991."
Finland.
@misc{etde_10145202,
title = {Operation of Finnish nuclear power plants. Quarterly report 3rd quarter, 1991}
author = {Tossavainen, K}
abstractNote = {The Finnish nuclear power plant units Loviisa 1 and 2 as well as TVO I and II were in operation for almost the whole third quarter of 1991. Longer interruptions in electricity generation were caused by the annual maintenances of the Loviisa plant units. The load factor average was 81.7 %. In a test conducted during the annual maintenance outage of Loviisa 1 it was detected that the check valve of the discharge line of one pressurized emergency make-up tank did not open sufficiently at the tank`s hydrostatic pressure. In connection with a 1988 modification, a too tightly dimensioned bearing had been mounted on the valve`s axle rod and the valve had not been duly tested after the operation. The event is classified as Level 1 on the International Nuclear Event Scale. Other events in this quarter which are classified according to the International Nuclear Event Scale are Level Zero (Below Scale). Occupational radiation doses and releases of radioactive material off-site were below authorised limits in this quarter. Only small amounts of radioactive materials originating in nuclear power plants were detected in samples taken in the vicinity of nuclear power plants.}
place = {Finland}
year = {1992}
month = {Mar}
}
title = {Operation of Finnish nuclear power plants. Quarterly report 3rd quarter, 1991}
author = {Tossavainen, K}
abstractNote = {The Finnish nuclear power plant units Loviisa 1 and 2 as well as TVO I and II were in operation for almost the whole third quarter of 1991. Longer interruptions in electricity generation were caused by the annual maintenances of the Loviisa plant units. The load factor average was 81.7 %. In a test conducted during the annual maintenance outage of Loviisa 1 it was detected that the check valve of the discharge line of one pressurized emergency make-up tank did not open sufficiently at the tank`s hydrostatic pressure. In connection with a 1988 modification, a too tightly dimensioned bearing had been mounted on the valve`s axle rod and the valve had not been duly tested after the operation. The event is classified as Level 1 on the International Nuclear Event Scale. Other events in this quarter which are classified according to the International Nuclear Event Scale are Level Zero (Below Scale). Occupational radiation doses and releases of radioactive material off-site were below authorised limits in this quarter. Only small amounts of radioactive materials originating in nuclear power plants were detected in samples taken in the vicinity of nuclear power plants.}
place = {Finland}
year = {1992}
month = {Mar}
}