05000282/FIN-2012011-03

Finding

Title

Failure to Update the Calculations for Steam Generator Draining

Description

An inspector-identified finding of very low safety significance and an NCV of 10 CFR 50, Appendix B, Criterion III, was identified due to the licensees failure to update engineering calculations for the amount of nitrogen to be used during steam generator tube draining. Specifically, the failure to correctly include the number of plugged steam generator tubes into the engineering calculations was considered a performance deficiency. This deficiency was more than minor, as it contributed to the vessel overpressure that resulted in over-draining of the RCS on March 6 2012, and a NOUE. The licensee initiated ARs 01328420, 01329464, and 01328366 to evaluate this issue. This finding was determined to be cross-cutting in the area of Resources, specifically having complete and up-to-date design documentation (H.2.(c)). Because the licensee inappropriately placed the engineering calculations in non-active status, they were not updated to reflect the actual number of plugged steam generator tubes. This resulted in the station procedure incorrectly stating the amount of nitrogen needed and the amount of water removed during steam generator tube draining.

03
Site:	Prairie Island
Report	IR 05000282/2012011 Section 4OA5
Date counted	Sep 30, 2012 (2012Q3)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:
Inspectors (proximate)	N Shah K Riemer C Moore
CCA	H.7, Documentation
INPO aspect	WP.3
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v • d • e

Finding - Prairie Island - IR 05000282/2012011

1(0)2(13)3(6)4(2)5(11)7(3)8(0)9(0)10(0)11(3)301(0)402(1)403(0)404(0)406(0)501(0)503(0)504(1)

IR 05000282/2012011: 1 2 3

Finding List (Prairie Island) @ 2012Q3

CCA Matrix: 2012Q3

	Q	CCA	Title
05000306/FIN-2011005-04	2011Q4	H.14	Failure to Complete Immediate Operability Determination on Molded Case Circuit Breakers
05000282/FIN-2011012-01	2011Q4		Flammable Gas Bottles Installed and/or Stored in the Auxiliary Building
05000282/FIN-2011012-02	2011Q4	H.13	Failure to Correct a Condition Adverse to Quality
05000306/FIN-2011005-01	2011Q4		Potential Technical Specification NON-COMPLIANCE While Completing Repairs on Motor Damper 32421
05000306/FIN-2011005-03	2011Q4		Potential Maintenance Rule Scoping Issue for Residual Heat Removal Pump Pit Sump Pumps and Level Switches
05000282/FIN-2011405-01	2011Q4	H.14	Security
05000306/FIN-2011005-05	2011Q4		Potential Safety System Functional Failure Due to Steam Exclusion Damper Issues
05000306/FIN-2011005-02	2011Q4		Appendix R Fire Barrier Degraded Between Fire Areas 118 and 128
05000282/FIN-2012002-02	2012Q1		Review Of Steam Exclusion Damper Maintenance Effectiveness
05000282/FIN-2012002-08	2012Q1		Unit 2 Manual Reactor Trip During Shutdown for Outage 2R27
05000282/FIN-2012002-11	2012Q1	H.12	Inadequate Operational Log Entries
05000282/FIN-2012002-10	2012Q1		Inadequate Three Hour Fire Barrier Between Bus 26 And Bus 27 Rooms
05000282/FIN-2012002-09	2012Q1		Review of Root Cause Evaluation for March 6, 2012, Notice of Unusual Event
05000282/FIN-2012002-07	2012Q1	P.3	Failure to Timely Activate ERDS
05000306/FIN-2012002-06	2012Q1	H.10	Failure to Timely Augment the On-Shift Staffing
05000282/FIN-2012002-05	2012Q1	H.2	Failure to Implement Procedure Use and Adherence Requirements While Draining Sodium Hypochlorite Draw Down Tank
05000282/FIN-2012002-04	2012Q1	H.14	Failure to Assess Operability of Circuit Breakers due to Inadequate Lubrication
05000282/FIN-2012002-03	2012Q1	H.13	Failure to Properly Assess Operability of D2 EDG following Surveillance Testing
05000282/FIN-2012002-01	2012Q1	H.5	Breaker 212E-44 Failure due to Lack of Preventive Maintenance
05000282/FIN-2012003-05	2012Q2		Impact of Outside Air Temperatures on D1 and D2 EDG Operability
05000282/FIN-2012003-04	2012Q2		Failure to Make a 60 Day Report Pursuant to 10 CFR 50.73
05000282/FIN-2012003-03	2012Q2		Failure to Make a 60 Day Report Pursuant to 10 CFR 50.73
05000306/FIN-2012003-02	2012Q2	H.5	Failure to Properly Assess and Manage Risk
05000282/FIN-2012003-01	2012Q2	P.2	Unit 2 Reactor Trip Due to Operation of LOW Pressure Turbine Outside ITS Design
05000282/FIN-2012007-03	2012Q3		Lack of Design Basis Information for Steam Exclusion Damper Leakage
05000282/FIN-2012011-03	2012Q3	H.7	Failure to Update the Calculations for Steam Generator Draining
05000282/FIN-2012004-02	2012Q3		Unit 1 Required Shutdown Due to D1 and D2 Emergency Diesel Generator Exhaust Fires
05000282/FIN-2012007-02	2012Q3		Failure to Perform Maintenance Rule Evaluations After Discovering Degraded Radiation Monitors
05000282/FIN-2012011-02	2012Q3	H.7	Inadequate Procedure for Draining of Reactor Coolant System
05000282/FIN-2012011-01	2012Q3	P.3	Failure to Take Corrective Action for Reactor Coolant System Level Indication Issues
05000282/FIN-2012004-01	2012Q3	H.2	Failure to Perform Adequate Past Operability Evaluations After Discovering Degraded Component Cooling Heat Exchangers
05000282/FIN-2012007-01	2012Q3		Number of Air Receivers Required to Be Greater than 480 PSIG to Support EDG Operability

Self-Identified List (Prairie Island)

	Q	Title
05000306/FIN-2011005-07	2011Q4	Licensee-Identified Violation
05000282/FIN-2011405-02	2011Q4	Security
05000306/FIN-2011005-06	2011Q4	Licensee-Identified Violation
05000306/FIN-2011005-08	2011Q4	Licensee-Identified Violation
05000306/FIN-2011005-09	2011Q4	Licensee-Identified Violation
05000282/FIN-2012002-13	2012Q1	Licensee-Identified Violation
05000282/FIN-2012002-12	2012Q1	Licensee-Identified Violation
05000282/FIN-2012003-06	2012Q2	Licensee-Identified Violation
05000282/FIN-2012402-01	2012Q3	Security

[Prairie Island Findings full list]

05000282/FIN-2012011-03

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