Nanticoke Coal Unit 7 Remains Offline for Additional Repairs

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Researched by Industrial Info Information Resources (Sugar Land, Texas). Nanticoke Power Station located in Nanticoke, Ontario and owned by Ontario Power Generation, a subsidiary of the Ministry of Energy, shut down the 500-megawatt (MW) coal-fired Unit 7 on Monday July 9, 2007, due to an unplanned boiler outage.

While the unit was shut down, workers discovered a generator seal malfunction. The plant has stated that the seal’s purpose is to hold hydrogen and at this time there have been no leaks detected, only that it had started to run hot. Plant officials have stated that if there are no leaks discovered they are hoping to return the unit online by Sunday July 15, 2007. Nanticoke’s 500 MW Unit 5 was also taken offline July 12, 2007 to repair a boiler leak and is expected to return online Saturday July 14, 2007 after repairs are complete.

The Nanticoke Power Station began operating in 1972 and has eight coal-fired units. When at full power the plant generates a total capacity of 4,000 MW. All other units are online and will continue to generate at full load.

Ontario Power Generation (OPG) is an Ontario-based electricity generation company whose principal business is the generation and sale of electricity in Ontario. OPG’s generating portfolio has a capacity of over 22,000 megawatts, which is one of the largest power generators in North America. Assets include three nuclear generating stations, five fossil generating stations, 64 hydroelectric generating stations and three wind generating stations.

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