Tuesday, September 06, 2016

Junk Plant Pilgrim Second Scram On Ocean High Temperature Cycling

Update

Neal told me, in fact, there are two separate 23 kilovolts lines going into Pilgrim. One going to waste treatment plant and the other attached to the emergency shutdown transformer. Within a few weeks both shorted and created a small brush fire in the owner controlled area. Neal didn't seem to think there is a connection to each grounded event. I Told him if I worked a Pilgrim or the NRC, I'd be digging as hard as I could looking for a connection or link to both events. He said he would pass that onto the resident.
Pilgrim Nuclear Power Plant Shuts Down Following Valve Problem

September 6, 2016

PLYMOUTH – The Pilgrim Nuclear Power Station in Plymouth experienced an unplanned shutdown this morning, according to the Nuclear Regulatory Commission.

A statement from the agency said it was caused by a high water level resulting from a problem with a regulating valve.

Water is pumped into the reactor so that it can be boiled, converted to steam and then piped to the turbine to generate electricity.

The NRC said their onsite inspectors responded to observe operator responses and verify the safe shutdown of the plant just after 8:30 a.m.
 
Feed water regulation valve malfunctions are the types of problems you expect to see with jumping up and down in power.
Spokesman Neil Sheehan said plant owner Entergy will need to identify the cause of the valve fluctuations and make any needed repairs before the reactor can return to service.  
It’s just the latest equipment issue with the troubled plant that is listed as one of the worst in the nation by the NRC.

On Monday, the plant’s power was reduced to 90 percent because of elevated water intake temperatures.
 
I believe they use the 23 kilovolt line as a backup electricity source if the lose all electricity at the site. It is a value safety system. 
There was also a downed tree on the 23-kilovolt power line to the plant’s waste-treatment facility on Sunday evening which caused a small fire near Rocky Hill Road.

The NRC said the line outage did not impact any safety-related equipment at the plant.

Entergy announced last year that they would close Pilgrim by 2019





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