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Etats-Unis : Perry : Découverte de tritium dans les eaux souterraines




20 janvier 2014


Du tritium à un niveau de 46 000 picocuries par litre a été mesuré dans la nappe phréatique sous la centrale. Des actions sont en cours pour tenter d’arrêter la fuite de tritium.

Type : BWR Mark 3 - Puissance : 3 758 MWTh - Première divergence : 06 /1986

Available in english only.


Event Number : 49746 - Facility : PERRY - State : OH -

Unit : [1] - RX Type : [1] GE-6 -

Event Date : 01/21/2014 - Event Time : 01:40 Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(2)(xi) - OFFSITE NOTIFICATION

Initial PWR = 100 % - Current PWR C = 100 %

Event Text

OFFSITE NOTIFICATION DUE TO TRITIUM DISCOVERED IN GROUNDWATER

"This notification is being made pursuant to [10 CFR] 50.72(b)(2)(xi), notification of other government agency. Notification to other government agency, State of Ohio, was made at 0140 [EST] on 1/21/14.

"At 1310 on 1/20/2014, a leak was identified on a feed water Venturi. In response to the water leak, samples were taken to check for the spread of tritium. A positive result for tritium was identified in the under drain system in the Auxiliary Building which requires communications as part of the NEI ground water protection initiative. The positive sample results were obtained at 2330 on 1/20/14. Actions are in progress stop the leak (perform leak injection)."

The EPA limit for groundwater is 20,000 pCi/l. The samples taken by the licensee indicated 46,000 pCi/l.

http://www.nrc.gov/reading-rm/doc-collections/event-status/event/2014/20140122en.html