http://www.nordpoolspot.com/alerts/UMM_feed/ Urgent Market Messages (UMMs) give updates on failures, planned revisions and other reasons for capacity changes in grid, production and consumption. http://www.nordpoolspot.com/umm/ Yearly maintenance. Revision moved from week 37. Saaheim (180 MW) which was a part of the original UMM is still out of production in week 37 (120 MW outage), but under the new report limit of 200 MW per station and is the excluded from the follow up UMM. 2008-08-20T10:18+02:00 http://www.nordpoolspot.com/umm/ Stop due to grid connection outage. 2008-08-20T10:11+02:00 http://www.nordpoolspot.com/umm/ Yearly maintenance. Revision moved from week 37. 2008-08-20T10:08+02:00 http://www.nordpoolspot.com/umm/ Yearly maintenance. 2008-08-20T10:01+02:00 http://www.nordpoolspot.com/umm/ Failure at Feda substation in Norway. 2008-08-20T09:59+02:00 http://www.nordpoolspot.com/umm/ Duration unknown. Failure at Feda substation in Norway. 2008-08-20T08:11+02:00 http://www.nordpoolspot.com/umm/ During the start up test program after outage 2008 Ringhals 3 will perform a turbine trip 23/8 11:00. Ringhals 3 will be back at full power 14:00. 2008-08-20T07:40+02:00 http://www.nordpoolspot.com/umm/ During the start up test program after outage 2008 Ringhals 3 will perform a reactor trip 30/8 11:00. Ringhals 3 will be back at full power 19:00. 2008-08-20T07:39+02:00 http://www.nordpoolspot.com/umm/ During the start up test program after outage 2008 Ringhals 3 will reduce the power about 50 MW 21/8 10:00 and then perform a loadsving 100 MW down and 100 MW up. After that Ringhals 3 will increase the power back to full power 21/8 15:00 2008-08-20T07:38+02:00 http://www.nordpoolspot.com/umm/ Valve test (5 hours) 2008-08-20T07:31+02:00 http://www.nordpoolspot.com/umm/ 2008-08-19T21:46+02:00 http://www.nordpoolspot.com/umm/ 2008-08-19T20:48+02:00 http://www.nordpoolspot.com/umm/ 2008-08-19T16:28+02:00 http://www.nordpoolspot.com/umm/ Ringhals 3 reduction of power due to fuel problems and going to cold shut down. Ringhals 3 will earliest be back on grid sunday the 24/8 at noon. 2008-08-19T15:12+02:00 http://www.nordpoolspot.com/umm/ Change of contact brusches 2008-08-19T14:35+02:00 http://www.nordpoolspot.com/umm/ Due to the continued work in STRÖMMA substation, Svenska Kraftnät forsee a need for a daily regulation of units 2-4 in Ringhals power plant during the period specified above. The total hourly regulation of the units is forecast not to exceed 700 MW. Update 080819 13:45. Due to the forced redution of the output from Ringhals unit 3 the output from Ringhals unit 4 is no longer restricted. A new restriction of the output from unit 4 may be enforced when unit 3 is fully operationable again. 2008-08-14 13:05 Further Information The output from Ringhals unit 4 will be reduced with 450 MW during the above specified time period. There is also a risk that the output from Ringhals unit 2 will be reduced with another 240 MW during low load condition during the above specified time period. 2008-08-19T14:00+02:00 http://www.nordpoolspot.com/umm/ Reserve Power Plant Tjeldbergodden New event start and event stop. The reserve power plant shall be available for the TSO in situations with severe lack of energy. The plant is soon ready for testing. During testing the scheduled production will be sold in the elspot market as follows: 25.08-07.09 Low effect test, 0-50 MW production 08.09-14.09 Shutdown test, 0-150 MW production 15.09-21.09 Endurance test, 150 MW production Schedule will be updated if plans are changed. 2008-08-19T13:34+02:00 http://www.nordpoolspot.com/umm/ Ringhals 3 reduction of power due to fuel problems and going to cold shut down. Duration unknown. 2008-08-19T13:30+02:00 http://www.nordpoolspot.com/umm/ Reparation of heat exchanger. Expected back during the evening. 2008-08-19T13:27+02:00 http://www.nordpoolspot.com/umm/ 2008-08-19T12:07+02:00 http://www.nordpoolspot.com/umm/ The inspection is cancelled. 2008-08-19T11:59+02:00 http://www.nordpoolspot.com/umm/ Variable load test(0-100%). 2008-08-19T11:32+02:00 http://www.nordpoolspot.com/umm/ Variable load test(0-100%. 2008-08-19T11:25+02:00 http://www.nordpoolspot.com/umm/ Controlling system failed. G2 back after 25 minutes, G1 is back around noon. 2008-08-19T11:17+02:00 http://www.nordpoolspot.com/umm/ 2008-08-19T11:03+02:00 http://www.nordpoolspot.com/umm/ Duration is still unknown, fault localisation continues. 2008-08-19T10:53+02:00 http://www.nordpoolspot.com/umm/ Work on Konti Skan and i Strömma 2008-08-19T10:47+02:00 http://www.nordpoolspot.com/umm/ 2008-08-19T10:47+02:00