ENS 50702: Difference between revisions

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| event date = 10/26/2014 03:40 CDT
| event date = 10/26/2014 03:40 CDT
| last update date = 12/23/2014
| last update date = 12/23/2014
| title = 60-Day Optional Telephone Notification Of Invalid Actuation Of Residual Heat Removal Pump
| title = 60-Day Optional Telephone Notification of Invalid Actuation of Residual Heat Removal Pump
| event text = This 60-day telephone notification is being made under reporting requirements specified by 10 CFR 50.73(a)(2)(iv)(A) and 10 CFR 50.73(a)(1) to describe an invalid actuation of the Unit 1 11 RHR Pump while Unit 1 was at NO MODE. It was a complete actuation. This was not the result of a preplanned sequence during testing and the system was not removed from service.
| event text = This 60-day telephone notification is being made under reporting requirements specified by 10 CFR 50.73(a)(2)(iv)(A) and 10 CFR 50.73(a)(1) to describe an invalid actuation of the Unit 1 11 RHR Pump while Unit 1 was at NO MODE. It was a complete actuation. This was not the result of a preplanned sequence during testing and the system was not removed from service.
At 0340 CDT on October 26, 2014, the Unit 1 11 RHR Pump was noted to have started while investigating an NSSS [nuclear steam supply system] annunciator system ground. The operator verified that the pump had adequate suction path via the RCS Cold Leg and stable pump discharge pressure. The 11 RHR Pump was stopped per the plant's abnormal operating procedure.
At 0340 CDT on October 26, 2014, the Unit 1 11 RHR Pump was noted to have started while investigating an NSSS [nuclear steam supply system] annunciator system ground. The operator verified that the pump had adequate suction path via the RCS Cold Leg and stable pump discharge pressure. The 11 RHR Pump was stopped per the plant's abnormal operating procedure.

Latest revision as of 20:48, 1 March 2018

ENS 50702 +/-
Where
Prairie Island Xcel Energy icon.png
Minnesota (NRC Region 3)
Reporting
10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation

Other Unspec Reqmnt
Time - Person (Reporting Time:+1395.33 h58.139 days <br />8.306 weeks <br />1.911 months <br />)
Opened: Mark Loosbrock
13:00 Dec 23, 2014
NRC Officer: Howie Crouch
Last Updated: Dec 23, 2014
50702 - NRC Website
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