05000293/FIN-2008007-04

Finding

Title

Non-Conservative Calculation for SSW Pump Minimum Flowrate

Description

Green. The team identified a finding of very low safety significance involving a non-cited violation of 10 CFR 50, Appendix B, Criterion III, Design Control, in that, Entergy did not properly translate design basis parameters into specifications and procedures for the salt service water (SSW) system. Specifically, the system hydraulic analysis did not establish a system leakage limit, and the plant operating procedures allowed alignments that could have led to a condition where system leakage could have been in excess of the available margin. Entergy entered this issue into their corrective action system and instituted immediate corrective actions. This finding is more than minor because the deficiency represented reasonable doubt on the operability of the SSW system. The finding is associated with the design control attribute of the Mitigating Systems Cornerstone and affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The team determined the finding was of very low safety significance (Green) because it was a design deficiency confirmed not to result in a loss of the SSW system. (1R21.2.1.11

04
Site:	Pilgrim
Report	IR 05000293/2008007 Section 1R21
Date counted	Jun 30, 2008 (2008Q2)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71111.21
Inspectors (proximate)	L Scholl S Pindale G Skinner M Shlyamberg J Schoppy A Patel L Casey L Doerflein
INPO aspect
'
v • d • e

Finding - Pilgrim - IR 05000293/2008007

1(0)2(1)3(2)4(0)5(3)6(0)7(4)201(0)402(0)403(0)502(0)19(0)

IR 05000293/2008007: 1 2 3 4

Finding List (Pilgrim) @ 2008Q2

CCA Matrix: 2008Q2

	Q	CCA	Title
05000293/FIN-2008002-01	2008Q1	H.13	Inadequate Risk Assessment for Emerency Maintenance on A5 Emergency Bus Undervoltage Relays
05000293/FIN-2008007-01	2008Q2	P.2	Inadequate Corrective Actions for \"B\" Battery Charger Circuit Breaker
05000293/FIN-2008007-02	2008Q2	P.2	Inadequate Corrective Actions in Response to an Intake De-watering Event.
05000293/FIN-2008007-03	2008Q2		Inadequate Design Control for Switchyard Voltage Criteria
05000293/FIN-2008007-04	2008Q2		Non-Conservative Calculation for SSW Pump Minimum Flowrate

Self-Identified List (Pilgrim)

	Q	Title
05000293/FIN-2008003-01	2008Q2	Licensee-Identified Violation
05000293/FIN-2008003-02	2008Q2	Licensee-Identified Violation

[Pilgrim Findings full list]

05000293/FIN-2008007-04

Navigation menu

Search