ENS 43245

v t e ENS Event
20:58 Mar 17, 2007
Title	Group Isolations Following Manual Reactor Scram
Event Description	On March 17 2007, at approximately 1658 EDT, Group 2 (Reactor Building Ventilation Isolation) and Group 6 (RWCU Isolation) automatic containment isolation signals were received due to low reactor water level following the insertion of a manual scram signal. The manual scram signal was inserted following the reaching of internal administrative limits on changes in unidentified drywell leakage. The receipt of these isolation signals is not unusual following the insertion of a scram signal. The reactor was manually shutdown due to reaching internal administrative limits on changes in unidentified drywell leakage. Prior to the manual shutdown, the leakage had not reached the applicable Technical Specification limits. Drywell leakage as of 1800 EDT was 1.3 GPM identified and 2.59 GPM unidentified with the unit in Hot Shutdown Mode. All safety systems responded as expected. The plant is in a stable condition. Investigation is continuing. The licensee notified the NRC Resident Inspector.

ENS 43245 +/-
Where
Pilgrim Massachusetts (NRC Region 1)
Reporting

10 CFR 50.72(b)(3)(iv)(A), System Actuation
Time - Person (Reporting Time:+0.22 h0.00917 days <br />0.00131 weeks <br />3.01356e-4 months <br />)
Opened:	David Noyes 21:11 Mar 17, 2007
NRC Officer:	John Mackinnon
Last Updated:	Mar 17, 2007
43245 - NRC Website
v • d • e

v t e Emergency Notification System
Pilgrim with 10 CFR 50.72(b)(3)(iv)(A), System Actuation
WEEKMONTHYEAR2019-05-18T03:03:00 [Table view]
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