VATTENFALL’S NUCLEAR POWER PLANTS OFF THE GRID

Sweden In this year’s programme, which runs until October, some 4,000 employees will be working on the maintenance and upgrading of Vattenfall’s nuclear power plants. A total of SEK 2 billion is being spent as just over a third of Sweden’s power generation capacity is temporarily withdrawn from service.

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.

Outages 2017:
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

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