PLYMOUTH – Late this afternoon the reactor at the Pilgrim Nuclear Power Station experienced what plant officials deemed “an automatic shutdown due to the closure of a single main steam isolation valve, or MSIV.”
There are four (4) main steam lines that carry steam from the reactor to the turbine-generator and the MSIV serves to automatically isolate the reactor from the turbine-generator.
The so-called scram of the reactor, began today (Saturday, August 22) around 4:30 p.m. with the reactor operating at 100 percent.
Continue reading at Pilgrim scrams again: valve problem shuts down Plymouth nuclear reactor
