ENS 40537

v t e ENS Event
20:10 Feb 22, 2004
Title	Manual Scram at Peach Bottom 2 Due to Decreasing Condenser Vacuum
Event Description	Peach Bottom Unit 2 reactor was manually scrammed due to degrading main condenser vacuum. The reactor was manually scrammed prior to reaching the automatic scram setpoint. All plant systems responded as expected with no significant issues noted. A Group II and Group III Primary Containment Isolation was received due to reactor water level passing through 1 inch. All isolation systems responded as required and repositioned to their expected positions. The licensee also indicated that all control rods properly inserted into the core. The method of decay heat removal was using the main condenser. The licensee initiated a post scram review to identify and correct the source of degrading vacuum. The licensee also indicated the manual scram was initiated at 25 inches and lowering of condenser vacuum. The licensee notified the NRC Resident Inspector.

ENS 40537 +/-
Where
Peach Bottom Pennsylvania (NRC Region 1)
Reporting

10 CFR 50.72(b)(2)(iv)(B), RPS Actuation 10 CFR 50.72(b)(3)(iv)(A), System Actuation
Time - Person (Reporting Time:+-1.47 h-0.0613 days <br />-0.00875 weeks <br />-0.00201 months <br />)
Opened:	Barry Hedrick 18:42 Feb 22, 2004
NRC Officer:	Rich Laura
Last Updated:	Feb 22, 2004
40537 - NRC Website
v • d • e

v t e Emergency Notification System
Peach Bottom with 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation
WEEKMONTHYEAR2024-01-29T17:02:00 [Table view]
[ENS list for Peach Bottom]

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