ENS 52240

v t e ENS Event
00:30 Sep 14, 2016
Title	Steam Propagation Barrier Door Found Open
Event Description	During routine operator rounds at 2030 EDT, a steam propagation barrier door (SPBD) was discovered propped open for maintenance activities without appropriate station controls. This condition was in existence from approximately 1720 EDT to 2042 EDT when the SPBD was restored to its normal configuration. Throughout the approximate 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> and 22 minutes, when the SPBD was propped open, both trains of chill water were rendered non-functional due to a potential high energy line break. This subsequently rendered both trains of high-head safety injection inoperable, which placed the plant in Technical Specification 3.0.3. This condition was corrected prior to commencing a Technical Specification 3.0.3 plant shutdown. This condition is reportable under 10 CFR 50.72(b)(3)(v) as any event or condition that at the time of discovery could have prevented the fulfillment of a safety function. The NRC Senior Resident Inspector has been notified.

ENS 52240 +/-
Where
Summer 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:+0.53 h0.0221 days <br />0.00315 weeks <br />7.25994e-4 months <br />)
Opened:	Michael Moore 01:02 Sep 14, 2016
NRC Officer:	Dong Park
Last Updated:	Sep 14, 2016
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v • d • e

v t e Emergency Notification System
Summer with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
WEEKMONTHYEAR2016-09-14T00:30:00 [Table view]
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