05000219/FIN-2008003-01

Finding

Title

Improper Valve Reassembly Results in Instrument Air Transient

Description

A self-revealing finding was identified when AmerGen improperly reassembled the inlet valve actuator on the C & D instrument air dryers which damaged its o-ring and subsequently resulted in an instrument air transient on March 24, 2008. This finding was determined not to be a violation of NRC requirements. AmerGens corrective actions included repairing the air dryer inlet valve by replacing the failed o-ring and providing training on o-ring installation to maintenance personnel. The finding was more than minor because it was associated with the equipment performance attribute of the initiating events cornerstone and affected the objective to limit the likelihood of those events that upset plant stability and challenge critical safety functions during power operations. In accordance with inspection manual chapter (IMC) 0609.04, Phase 1 Initial Screen and Characterization of Findings, the inspectors conducted a Phase 1 SDP screening and determined that a detailed Phase 2 evaluation was required to assess the safety significance because the finding contributed to both the likelihood of a reactor trip and the likelihood that mitigation equipment would not be available. The finding was determined to be of very low safety significance based upon the Phase 2 evaluation. The performance deficiency had a cross-cutting aspect in the area of human performance because training was not adequate to ensure proper reassembly of the valve actuator by maintenance personnel H.2(b). (Section 1R12

01
Site:	Oyster Creek
Report	IR 05000219/2008003 Section 1R12
Date counted	Jun 30, 2008 (2008Q2)
Type:	Finding: Green
cornerstone	Initiating Events
Identified by:	Self-revealing
Inspection Procedure:	IP 71111.12
Inspectors (proximate)	M Ferdas R Nimitz J Commiskey R Bellamy O Ayegbiso J Heinly J Kulp J Schoppy
CCA	H.9, Training
INPO aspect	CL.4
'
v • d • e

Finding - Oyster Creek - IR 05000219/2008003

1(0)2(1)3(4)4(3)5(5)6(0)7(1)8(1)9(0)301(0)302(0)402(0)403(0)18(0)

IR 05000219/2008003: 1 2 3 4

Finding List (Oyster Creek) @ 2008Q2

CCA Matrix: 2008Q2

	Q	CCA	Title
05000219/FIN-2007004-01	2007Q3		C Reactor Feedpump Motor Failure
05000219/FIN-2007005-04	2007Q4		Loss of a Condenser Vacuum and Trip of a Feedwater Pump Results in a Reactor SCRAM
05000219/FIN-2008002-01	2008Q1	H.5	Inadequate Risk Assessment Identified Prior to Commencement of Maintenance
05000219/FIN-2008008-01	2008Q2		Failure to Review the Impact of Site Staffing Changes to the Fire Protection Program
05000219/FIN-2008003-01	2008Q2	H.9 H.2(b)	Improper Valve Reassembly Results in Instrument Air Transient
05000219/FIN-2008003-02	2008Q2		Instrument Air Transient Due to Insufficient Preventive Maintenance on Service Air Compressors
05000219/FIN-2008003-04	2008Q2	H.9	Diesel Driven Fire Pump Unavailable Due to Improper Testing
05000219/FIN-2008003-03	2008Q2	H.4 H.5	Potential Preconditioning of Core Spray Valves Prior to ASME In-service Test

Self-Identified List (Oyster Creek)

[Oyster Creek Findings full list]

05000219/FIN-2008003-01

Navigation menu

Search