05000334/FIN-2010004-01

Finding

Title

Inadequate Maintenance Procedure Results in Auto-Disassembly of EDG Intake Damper

Description

A Green, self-revealing finding (FIN) was identified in that an inadequate procedure resulted in a failure to adequately retain a 1-1 Emergency Diesel Generator (EDG) room damper after louver adjustment. Specifically, the adjustment of the 1-1 EDG upper damper (1VS-D-22-2A) in April 2010 led to retention hardware not being sufficiently secure to prevent damper failure and resulted in the linkage failing to open the upper dampers. This was selfrevealing during a crew investigation for a 1-1 EDG alarm on September 5,2010. This issue was entered into the licensee\'s corrective action program under CR 10-82257. Traditional enforcement does not apply because the issue did not have an actual safety consequence or the potential for impacting NRC\'s regulatory function, and was not the result of any willful violation of NRC requirements. The finding is more than minor because it is associated with the procedure quality attribute of the Mitigating Systems cornerstone and affects the availability, reliability and capability of systems that respond to initiating events to prevent undesirable consequences. In accordance with IMC 0609.04 (Table 4a), Phase 1 - Initial Screening and Characterization of Findings, the finding was determined to be of very low safety significance (Green). The cause of this finding relates to the cross-cutting aspect of Human Performance, Resources, in that FENOC did not provide complete procedures to conduct the damper adjustment and retention. [H.2.(c)]

01
Site:	Beaver Valley
Report	IR 05000334/2010004 Section 1R19
Date counted	Sep 30, 2010 (2010Q3)
Type:	Finding: Green
cornerstone	Mitigating Systems
Identified by:	Self-revealing
Inspection Procedure:	IP 71111.19
Inspectors (proximate)	T Moslak D Werkheiser P Kaufman J Krafty R Bellamy E Bonney
CCA	H.7, Documentation
INPO aspect	WP.3
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v • d • e

Finding - Beaver Valley - IR 05000334/2010004

1(0)2(1)3(0)4(1)5(6)6(0)201(1)402(0)403(1)501(0)502(1)301(0)22(0)

IR 05000334/2010004: 1

Finding List (Beaver Valley) @ 2010Q3

CCA Matrix: 2010Q3

	Q	CCA	Title
05000334/FIN-2009005-01	2009Q4	H.8	Failure to Properly Verify Valve Line-up Results in an Overpressurization of the Isolated CIS\" Reactor Coolant Loop.
05000334/FIN-2009005-02	2009Q4	H.9 H.2(b)	Inadequate RHS Shutdown Procedure Results in Unusual Event Declaration.
05000334/FIN-2010002-01	2010Q1	H.8	Human Performance Error Results in Disabling a Control Room Annunciator
05000334/FIN-2010201-01	2010Q1	H.12	Security
05000334/FIN-2010004-01	2010Q3	H.7	Inadequate Maintenance Procedure Results in Auto-Disassembly of EDG Intake Damper
05000334/FIN-2010403-01	2010Q3	H.12	Security

Self-Identified List (Beaver Valley)

	Q	Title
05000334/FIN-2010502-01	2010Q2	Licensee-Identified Violation

[Beaver Valley Findings full list]

05000334/FIN-2010004-01

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