ENS 50086

v t e ENS Event
18:56 May 5, 2014
Title	Manual Reactor Scram with Rod Motion While Shutdown
Event Description	During planned testing of the Control Rod Drive (CRD) system, the reactor trip breakers were opened via the manual reactor trip push buttons to de-energize a CRD motor in response to a high temperature. The partially withdrawn control rods fully inserted and all other rods remained in their initial positions. This manual Reactor Protection System (RPS) actuation while the reactor was not critical is reportable in accordance with 10 CFR 50.72(b)(3)(iv)(A). The licensee notified the NRC Resident Inspector, the State of Ohio, and Ottawa and Lucas Counties.

ENS 50086 +/-
Where
Davis Besse Ohio (NRC Region 3)
Reporting

10 CFR 50.72(b)(3)(iv)(A), System Actuation
LER:	05000346/LER-2014-002 Regarding Manual Initiation of the Reactor Protection System Due to Disconnected Cooling of a Control Rod Drive
Time - Person (Reporting Time:+2.35 h0.0979 days <br />0.014 weeks <br />0.00322 months <br />)
Opened:	Nick Buehler 21:17 May 5, 2014
NRC Officer:	Donald Norwood
Last Updated:	May 5, 2014
50086 - NRC Website Loading map...
v • d • e

v t e Emergency Notification System
Davis Besse with 10 CFR 50.72(b)(3)(iv)(A), System Actuation
WEEKMONTHYEAR2016-09-10T07:43:00 [Table view]
[ENS list for Davis Besse]

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