Event Report: Massachusetts nuke declares safety system inoperable

Yesterday afternoon, workers wer performing maintenance on the sole reactor at the Pilgrim nuclear power plant in Massachusetts when they discovered that a valve in the High Pressure Coolant Injection (HPCI) system failed to open. According to the Event Report submitted to the NRC: “The HPCI-24 valve has a safety function to open on a demand signal during certain event mitigation scenarios requiring the HPCI system operation.” This caused Pilgrim to declare the HPCI inoperable.

Although the Event Report said that the reactor was entering a Limiting Condition of Operation, Pilgrim Unit 1 is still listed at 100 per cent output as of this morning’s Reactor Status report.

The Pilgrim reactor is a General Electric Mark I, of the type that melted down at Fukushima.

 

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About Robert Singleton

By day, I work for a call center. In my spare time, I try to save my hometown (and planet) from a nearly constant onslaught of greedheads, lunatics and land developers. I live in a fictional town called Austin, Texas, where I go to way too many meetings.
This entry was posted in Event Reports, GE Mark I reactor, Nuclear Regulatory Commission, Pilgrim, Reactor problems and tagged , , , , . Bookmark the permalink.

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