05000306/FIN-2011005-03

Finding

Title

Potential Maintenance Rule Scoping Issue for Residual Heat Removal Pump Pit Sump Pumps and Level Switches

Description

The inspectors identified a URI regarding the need to include the residual heat removal (RHR) pump pit sump pumps and level switches within the scope of the licensees maintenance rule program. Description: During a review of daily corrective action documents, the inspectors noted several documents which questioned the safety classification of the sump pumps and level switches located in the RHR pump pits. The sump pumps and level switches were used to remove water from the pits that may accumulate due to system leakage. Based upon the information in these corrective action documents, the inspectors selected the sump pumps and level switches (which were considered part of the waste liquid system) for additional review. The inspectors reviewed information contained within the licensees computer database and determined that the sump pumps and level switches were functionally checked every three years. The inspectors reviewed the maintenance history and determined that the functional checks were performed within the required periodicity. The inspectors reviewed the licensees Maintenance Rule Bases Document to determine whether the waste liquid systems risk-significant functions had been properly scoped into the maintenance rule. Title 10 CFR Part 50.65 required licensees to include equipment whose failure could prevent safety-related SSCs from fulfilling their safety function as part of their maintenance rule program. The inspectors noted that the RHR pump pit sump pumps and level switches were not included in the licensees maintenance rule program even though the failure of this equipment during an RHR pump pit internal flood may prevent the RHR system (a safety-related system) from fulfilling its safety function. As a result, the inspectors were concerned that the licensee may not be monitoring the performance of the sump pumps and level switches as required by the NRC. The inspectors discussed their concern with maintenance rule and system engineering personnel. At the conclusion of the inspection, the licensee was reviewing licensing and design basis information to determine whether the RHR pump pit sump pumps and level switches were credited as part of the internal flooding analysis. The inspectors planned to review the licensees results when they were available to aid in determining whether the licensee was in compliance with 10 CFR Part 50.65. As a result, this issue was determined to be unresolved pending the inspectors\\\' review of the licensees licensing and design basis information

03
Site:	Prairie Island
Report	IR 05000306/2011005 Section 1R12
Date counted	Dec 31, 2011 (2011Q4)
Type:	URI:
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71111.12
Inspectors (proximate)	C Moore C Thomas D Passehl D Szwarc J Beavers J Jandovitz K Riemer K Stoedter M Phalen P Zurawski R Langstaff V Myers A Dunlop A Shaikhr Bakers Bell D Mcneil D Oliver K Riemer K Stoedter M Phalen P Voss P Zurawski
INPO aspect
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v • d • e

Finding - Prairie Island - IR 05000306/2011005

2(4)3(13)4(9)5(9)6(0)7(0)8(0)9(0)10(1)11(0)12(2)201(0)202(0)403(1)404(0)405(2)406(0)502(1)14(0)

IR 05000306/2011005: 1 2 3 4 5 6 7 8 9

Finding List (Prairie Island) @ 2011Q4

CCA Matrix: 2011Q4

	Q	CCA	Title
05000282/FIN-2011002-04	2011Q1		Evaluation of Equipment Stored near Safety-Related Equipment
05000282/FIN-2011002-01	2011Q1	H.4 H.5	Flammable Gas Cylinders Stored in Safety-Related Area
05000282/FIN-2011002-02	2011Q1	P.3	Failure to Appropriately Complete an Operability Recommendation for the Unit 1 Battery Calculations
05000282/FIN-2011002-03	2011Q1	P.2	Failure to Appropriately Complete an Operability Recommendation on the Unit 1 Fuel Oil System
05000282/FIN-2011003-05	2011Q2		Evaluation of Equipment Stored near Safety-Related Equipment
05000282/FIN-2011403-01	2011Q2	H.8	Security
05000282/FIN-2011010-01	2011Q2		Failure to Ensure that the Train A and Train B DC Electrical Power Subsystems Remained Operable in Modes 1 through 4
05000282/FIN-2011003-10	2011Q2	H.5	Failure To Prescribe Appropriate Procedure For In-Service Testing of Check Valves
05000282/FIN-2011003-09	2011Q2	H.2	Alternate Methods Were Not Developed for Monitoring Inaccessible Susceptible Locations
05000282/FIN-2011003-08	2011Q2	P.5	Failure to Evaluate the Effects of Dynamic Loads at the CS Discharge Piping
05000282/FIN-2011003-07	2011Q2	P.5	GL 2008-01 Evaluations Did Not Adequately Verify the Design for Susceptible Locations of Gas Accumulation in Piping Systems
05000282/FIN-2011003-06	2011Q2		No Full Flow Testing of PORV Air Supply Check Valves
05000282/FIN-2011003-02	2011Q2		Failure to Assess the Impact of Changes in the Plants Isotopic Profile
05000282/FIN-2011003-01	2011Q2	H.2	Failure to Maintain Reactor Head Height/Distance Limitation From Reactor Vessel
05000282/FIN-2011502-01	2011Q2		Incomplete and Inaccurate Emergency Action Level Change Submittal
05000306/FIN-2011003-03	2011Q2		Unit 2 Reactor Trip during Severe Weather
05000306/FIN-2011003-04	2011Q2		Multiple SAMG Procedures not Consistent with Industry Guidance
05000306/FIN-2011004-01	2011Q3	H.14	Radiation Monitors Not Fully Scoped Into or Assessed by the Maintenance Rule Program
05000306/FIN-2011004-05	2011Q3		Failure to Incorporate Revised Battery Room Temperature Information into Existing Operability Recommendation
05000306/FIN-2011004-08	2011Q3	P.5	Unit 2 Reactor Trip due to Mis-operation of Substation Breakers
05000282/FIN-2011004-07	2011Q3		Failure to Provide Complete and Accurate Information in a Licensee Event Report
05000282/FIN-2011004-04	2011Q3	H.8	Failure to Make Eight Hour Report Pursuant to 10 CFR 50.72
05000306/FIN-2011004-02	2011Q3	H.8	Corrective Action Assignments Closed Without Completion of Tasks
05000306/FIN-2011004-06	2011Q3		Failure to Provide Complete and Accurate Information in a Licensee Event Report
05000306/FIN-2011004-03	2011Q3	H.8	Failure to Make Eight Hour Report Pursuant to 10 CFR 50.72
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
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-2011405-01	2011Q4	H.14	Security

Self-Identified List (Prairie Island)

	Q	Title
05000282/FIN-2011003-11	2011Q2	Licensee-Identified Violation
05000282/FIN-2011003-12	2011Q2	Licensee-Identified Violation
05000282/FIN-2011003-13	2011Q2	Licensee-Identified Violation
05000306/FIN-2011004-09	2011Q3	Licensee-Identified Violation
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

[Prairie Island Findings full list]

05000306/FIN-2011005-03

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