September 3, 2004

* Brunswick's EDG model susceptible to catastrophic piston defect

March 29, 2004

* Cooper - both EDGs found inoperable due to closed valve between two fuel oil tanks

March 8, 2004

* Susquehanna - diesel generator autostart when incorrect fuses removed during maintenance

* Wolf Creek - switchyard equipment problem caused loss of power; EDG autostarted

March 5, 2004

* Nine Mile Point - EDG exhaust fan dampers would open despite snow and ice

March 4, 2004

* Hatch - diesel generator autostart

February 17, 2004

* Crystal River - diesel turbochargers, not yet in use, had design flaw

December 3, 2003

Example of EDG failure when needed, from another industry

When the Illinois American water treatment plant on Mattis Avenue lost offsite power last Friday, a huge backup diesel generator at the water plant automatically kicked on, but it lost coolant and overheated after about 15 minutes. Coolant was added to the backup generator and it was returned to working order 45 minutes later.

[Source: David Baker, eastern division manager for Illinois American Water, cited by Mike Monson, "Meeting on water episode set" The News-Gazette (Champaign IL), December 3, 2003]

August 15, 2003

* Fermi - if LOCA occurred when offsite voltage was degraded, would diesels start quick enough to protect safety-related equipment?

July 26, 2003

* McGuire - new roof over diesel generators had to be redone after it, twice, caught on fire due to heat from the diesels

July 2, 2003

* Seabrook wants to add 5 MW of non-safety diesel power

April 24-25, 2003 - Event Report - Fish story at D.C. Cook plant - a bevy of fish at intake screens degarded flow to turbine, prompting manual reactor trip, and to EDGs, prompting all to be declared inoperable. The Alert lasted about 25 hours.

April 23, 2003