The annual outages have now started, and some 2,700 employees at Ringhals and Forsmark in addition to about a thousand colleagues from various subcontractors will be working on the power plants. First off the mark is Ringhals 1, to be followed by a complex combination of overhaul and upgrading of Vattenfall’s other reactors involving more than 10,000 maintenance jobs.
Planning of this year’s outage inspections has gone on for several years. Sven-Anders Andersson is head of the Ringhals outage organisation and has experience from more than thirty previous outages:
"During a normal outage, about 2,000 maintenance jobs are carried out on each reactor. It’s a complex task to assure the right personnel, resources and time slots for all these jobs. The main thing is to work safely, ensure good cooperation as well as a high level of commitment."
The plan calls for a total investment of about SEK 2 billion for the annual maintenance and upgrading of the power plants. Major projects at Ringhals include fuel replacement as well as an inspection of the steam turbine at Ringhals 4 and the installation of new mobile, diesel-powered units for standby power at Ringhals 3.
The investments at Forsmark include preparations for the introduction of an independent core cooling system at Forsmark 1 and replacement of a station transformer at Forsmark 2. Forsmark 3 operates on an 18-month cycle, which means that the next outage is not scheduled until 2018.
1 May – 3 June: Ringhals 1
3 June – 28 June: Ringhals 3
25 June – 24 July: Forsmark 1
2 August – 17 September: Ringhals 4
25 August – 24 September: Ringhals 2
3 September – 8 October: Forsmark 2