Finnish Nuclear Power Plants
Client: Teollisuuden Voima Oyj (TVO)
Date: 2011 -
Beele Engineering (Aalten, the Netherlands) has supplied its NOFIRNO sealing system to the Finnish producer of electricity Teollisuuden Voima Oyj (TVO).
The system is used in all the EI60 classified areas of the two nuclear power plant units operated by TVO, Olkiluoto 1 and Olkiluoto 2 (OL1 and OL2) where a minimum pressure tightness of 1.2 bar is required.
OL1 and OL2 are identical boiling water reactor power plant units. The net electrical output of both plants are 880 MW respectively 860 MW. Together the plants produce slightly more than 16% of all the electricity consumed in Finland.
TVO keeps the OL1 and OL2 units running as good as new through carefully planned long-term maintenance. The units are also systematically upgraded to conform to today´s demands. Maintenance and modernization are undertaken on an annual basis.
When several hundreds of pipe penetrations in both reactor units had to be updated and upgraded to the latest standards last year, the NOFIRNO sealing system of Beele Engineering was the system of choice.
Prior to the application in the nuclear power plant units the system was also tested and approved to withstand maximum 30 mSv/h radiation, where a max. radiation of 0.5 mSv during the whole day is allowed for persons.