ENS 43452: Difference between revisions

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v t e ENS Event
05:58 May 3, 2007
Title	Invalid System Actuation
Event Description	This event is being reported in accordance with 10 CFR 50.73(a)(1) and 10 CFR 50.73(a)(2)(iv)(A). This condition meets the criteria of 10 CFR 50.73(a)(2)(iv)(A) for any event or condition that results in manual or automatic actuation for any of the systems listed in paragraph 10 CFR 50.73(a)(2)(iv)(B). The specific requirements apply here to 'General containment isolation signals affecting containment isolation valves in more than one system.' During the performance of surveillance instruction 'Low Pressure Coolant Injection (LPCI) 'B' and 'C' Initiation and Loss of EH12 Response Time Test,' the following valves auto closed during the test activities: - 1G61-F0075 (Containment Equipment Drain Inboard Isolation), - 1G61-F0165 (Containment Floor Drain Inboard Isolation), - 1P11-F0090 (Containment Pools Drain Inboard Isolation), and - 1P50-F140 (Containment Vessel Chilled Water Inboard Return MOV Isolation) The signals are considered to be invalid as the signals were a result of test activities and not actual plant conditions. The valve logic to close the valves was momentarily satisfied due to the sequence of electrical power restoration during the test; however, the test did not address the valve movement and the valve actuations could not be considered to be preplanned. The system actuations were considered to be partial, and the valves functioned successfully as designed. The event was captured within the corrective action program under condition report (CR) 07-19866. The resident inspector was notified of this event notification.

ENS 43452 +/-
Where
Perry Ohio (NRC Region 3)
Reporting

10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation
Time - Person (Reporting Time:+1329.32 h55.388 days <br />7.913 weeks <br />1.821 months <br />)
Opened:	Thomas Stec 15:17 Jun 27, 2007
NRC Officer:	Steve Sandin
Last Updated:	Jun 27, 2007
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v • d • e

v t e Emergency Notification System
Perry with 10 CFR 50.73(a)(1), Submit an LER
WEEKMONTHYEAR2021-03-23T04:37:00 [Table view]
[ENS list for Perry]

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