ENS 47748
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ENS Event | |
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08:00 Mar 16, 2012 | |
Title | Refueling Water Storage Tank Connected to an Unqualified System |
Event Description | The Refueling Water Storage Tank (RWST) was placed on purification in accordance with [site procedure] OP-913, Refueling Water Purification Pump Operation, as directed from OP-301-1, Chemical and Volume Control System (Infrequent Operation), at 0400 [EDT] on 3/16/2012 to support make up of level to the RWST. This condition, connection of the purification loop, is not currently allowed based on unresolved seismic concerns with purification piping to the RWST. This was later discovered during a log review at 0545, and operators were immediately directed to remove the RWST from purification. ITS 3.5.4 was applied from 0400 based on when it was determined that this condition had been entered. ITS 3.5.4 was exited at 0622 when the RWST was removed from purification.
This is being reported pursuant to 50.72(b)(3)(v), Event or Condition That Could Have Prevented Fulfillment of a Safety Function. The licensee notified the NRC Resident Inspector. |
Where | |
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Robinson ![]() South Carolina (NRC Region 2) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
Time - Person (Reporting Time:+2.93 h0.122 days <br />0.0174 weeks <br />0.00401 months <br />) | |
Opened: | Warren Wonka 10:56 Mar 16, 2012 |
NRC Officer: | Vince Klco |
Last Updated: | Mar 16, 2012 |
47748 - NRC Website
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Unit 2 | |
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Reactor critical | Not Critical |
Scram | No |
Before | Hot Shutdown (0 %) |
After | Hot Shutdown (0 %) |
Robinson ![]() | |
WEEKMONTHYEARENS 507782015-01-29T00:57:00029 January 2015 00:57:00
[Table view]Other Unspec Reqmnt, 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Safety System Will Not Function as Required ENS 477482012-03-16T08:00:00016 March 2012 08:00:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Refueling Water Storage Tank Connected to an Unqualified System ENS 480112011-05-04T17:25:0004 May 2011 17:25:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Refueling Water Storage Tank Connected to Non-Seismically Qualified System ENS 463172010-10-07T17:15:0007 October 2010 17:15:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Feedwater Isolation Inadvertently Disabled ENS 460452010-06-24T18:34:00024 June 2010 18:34:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Instrument Buses 3 and 8 Failed Causing Closure of Rhr Valves ENS 406172004-03-28T15:26:00028 March 2004 15:26:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Both Trains of High Pressure Safety Injection Inoperable for 25 Minutes 2015-01-29T00:57:00 | |
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