29 avril 2015
Malgré cette perte d’élément de sécurité du cœur, le réacteur a été maintenu en puissance.
Type : BWR Mark 2 - Puissance : 3 486 MWTh - Première divergence : 01/1984
Available in english only.
Event Number : 51027
Facility : COLUMBIA GENERATING STATION - State : WA
Unit : [2] - RX Type : [2] GE-5
Event Date : 04/29/2015 - Event Time : 18:11
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Initial PWR : 95 % Current PWR : 95 %
Event Text
ROD POSITION INDICATOR SYSTEM (RPIS) UNPLANNED OUTAGE
"At 1811 PDT on 04/29/2015, the station declared the RPIS system inoperable when a Control Room panel alarmed the loss of indication. The cause of the equipment loss is under investigation. This unplanned equipment outage is being conservatively reported as a major loss of assessment capability in accordance with 10 CFR 50.72(b)(3)(xiii).
"No other safety equipment has been impacted by this event and the plant continues normal operation."
The NRC Resident Inspector has been notified.
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2015/20150501en.html#en51027