[en] Long term maintenance at Loviisa is based on an eight-year cycle; every eighth year inspection of the pressure vessel cladding, welds and nozzles; every fourth year visual inspection inside the reactor vessel and partial ultrasonic inspections of the vessel welds; in other years simple refuelling outages. The length of these outages has been reduced to 50, 40 and 20 days, respectively, and huge efforts are made to match major equipment overhauls and replacements to this programme. The details of the outage planning are described. (author)

[en] IVO, Power Engineering Ltd. has developed a company-wide approach to plant life management. The first stage of plant life management comprises operational and maintenance histories, design and plant inspection data using advanced computer systems. The life of the plant can be controlled by maintenance, refurbishment and inspection programs, and by varying the method of plant operation. On-line monitoring is needed, and cost control and training must be taken into account if the life of the plant is to be managed efficiently. Identifying the life-limiting factors is essential at Loviisa. It has been concentrated on the aging in the form of materials degradation due to fatigue, erosion, corrosion, radiation and thermal effects. Certain other life-limiting factors are also mentioned