Event Notification Report for July 15, 2011, NRC, July 15, 2011:
[Emphasis Added]
Event Number: 47052
Facility: SALEM
Region: 1 State: NJ
Event Date: 07/14/2011
Event Time: 20:53 [EDT]
Emergency Class: UNUSUAL EVENT
10 CFR Section: 50.72(a) (1) (i) – EMERGENCY DECLARED [...]UNUSUAL EVENT DECLARED BASED ON REACTOR COOLANT LEAK GREATER THAN 10 GPM
“At 2053 on July 14, 2011 Salem unit 2 declared an Unusual Event due to reactor coolant system leakage greater than 10 gallons per minute. While performing a monthly Emergency Core Cooling System vent of the high head safety injection piping a motor operated valve was opened and a leak developed on the high head piping greater than 10 gallons per minute. The leak rate was approximately 11-15 gallon per minute. The leak was terminated when the motor operated valve was closed. The time of the leak was about 6 minutes.”
At this time the leak is believed to be from a crack on the Boron Injection Tank (BIT) relief valve line which is connected to the high head piping. A total of approximately 90 gallon of reactor coolant leaked into the BIT room. The licensee has declared the high head safety injection inoperable and is proceeding to shutdown under Tech Spec 3.0.3. [...]
* * * UPDATE FROM KARL HANPHO TO VINCE KLCO ON 7/15/11 AT 0025 EDT* * *
“Salem Unit 2 declared an Unusual Event due to Reactor Coolant System (RCS) leakage being greater than 10 gpm and pressurizer level decreasing. Leakage was estimated to be approximately 15 gpm. [...] Salem Unit 2 began the Technical Specification shutdown [...]
“In addition since the leakage from the weld on the high head charging/safety injection piping exceeded the analyzed limit for ESF leakage outside containment, this event is also being reported in accordance with 10CFR50.72(b)(3)(v) and RAL 11.2.2.b as a condition that prevents the ability to mitigate the consequences of an accident.
“Salem unit 2 is currently at 27% and reducing power.” [...]
* * * UPDATE FROM KARL HANPHO TO CHARLES TEAL ON 7/15/11 AT 0345 EDT* * *
Salem Unit 2 has exited the Unusual Event as of 0339 EDT. The criteria for exit was the leakage rate was below the 10 gpm rate. The plant is in Mode 3 and is preparing to cooldown.
From June 28: Cooling pump fails at New Jersey nuclear reactor, plant shut down
Comment
Stuxnet anyone ?
Are these guys stupid, or what? After Japan's disaster - every nuclear plant should be checked and I mean really checked; Top to Bottom. They are all aging - even in Canada and need an over haul!! New parts need to be installed; not refurbished. This is too much. Where's the next one going to be? The old saying: "Nothing lasts forever", comes to mind!!!
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