Shutdown Tracker

Seawater temps too high for Pilgrim cooling

Seawater temps too high for Pilgrim cooling

PLYMOUTH – The ongoing heat wave could force Pilgrim Nuclear Power Station to shut down, as soaring temperatures continue to warm the Cape Cod Bay waters that the plant relies on to cool key safety systems.

Pilgrim’s license from the Nuclear Regulatory Commission requires the water being drawn from the bay to be no warmer than 75 degrees.…

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Early warning alarm shuts down at Mass. nuclear plant

Early warning alarm shuts down at Mass. nuclear plant

Panels of alarms designed to quickly warn personnel of operational failures at the Pilgrim Nuclear Power Station mysteriously shut down at 12:30 a.m. Monday and just as mysteriously restarted at 2:05 a.m.

The system failure required Entergy, the Louisiana-based owner and operator of the Pilgrim plant, to report “an unusual event” to the Nuclear Regulatory Commission.…

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Pilgrim scram valve fails again

Pilgrim scram valve fails again

Is this a sign of an aging plant past its prime?

The second “event” at Pilgrim in as many weeks – the failure of a “scram discharge valve” – is also the second time this particular valve has failed in the last two months.

The scram discharge volume valve – referred to in the event releases as CV-302-22B – failed Feb.…

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Another close call at Pilgrim

Another close call at Pilgrim

For the second time in two weeks, Entergy’s Pilgrim nuclear reactor experienced an “event” requiring notification to the NRC. The scram discharge volume valve (valve CV-302-22B) failed on March 1, 2013 and February 18, 2013. NRC Event Notification Reports

According to the Union of Concerned Scientists, “The scram discharge volume is a large metal tank that collects the water vented from the control rod’s hydraulic pistons during a scram.…

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NRC says last three Pilgrim Nuclear Power Station shutdowns were unrelated

NRC says last three Pilgrim Nuclear Power Station shutdowns were unrelated

Ten days ago it was a pump problem. Then, a few days later duck hunters came a bit too close for comfort. And Monday a valve leak set off alarms at the Pilgrim Nuclear Power Station. But, according to the Nuclear Regulatory Commission, it does not, as of now, “see any commonalities between these events as two involved different valves and one was caused by personnel error.”

From a layman’s point of view, these three events – and another shutdown in May – could appear to form a troubling pattern.…

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