13 juin 2013
Découverte d’une fuite d’eau inacceptable sur le circuit primaire au niveau d’une soudure. Le taux de fuite est estimé à moins de 230 litres par heure. La condition dégradée a été retenue par la NRC.
1ère divergence : juin 1986 - Type BWR Mark 1 - P : 1 191 MWe
Available in english only.
Facility : HOPE CREEK - State : NJ - Unit : [1] - RX Type : [1] GE-4 Event Date : 06/13/2013 - Event Time : 02:52 -
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(3)(ii)(A) - DEGRADED CONDITION
Initial PWR : 0 % Current PWR : 0 %
Event Text
DISCOVERY OF PRESSURE BOUNDARY LEAKAGE
"On 6/13/13 at approximately 0252 EDT, during the initial walk down of the drywell of the Hope Creek Unit 1 forced outage, water was observed leaking from a 40% circumferential crack in a weld in the RHR vent line adjacent to the outboard isolation valve (BCV-597). The estimated leakage rate through the crack is less than one gallon per minute. The RHR vent line is one-inch ASME Class 1 piping. Hope Creek Unit 1 is stable in Operational Condition 3, Hot Shutdown.
"This report is being made under 10CFR50.72(b)(3)(ii)(A) for a weld or material defect in the primary coolant system which cannot be found acceptable under applicable ASME standards.
"The NRC Resident Inspector has been notified. The only safety-related equipment out of service at the time event was the ’C’ Service Water Pump, which was tagged for scheduled maintenance.
"No personnel injuries occurred. No radiation releases occurred."
The licensee entered a 24 hr. action statement under T.S. 3.4.3.2, Condition A to be in mode 4 by 0252 EDT on 6/14/13.
The licensee will be notifying the Lower Alloways Creek township.
Event Number : 49110
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2013/20130614en.html#en49110
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