05000306/FIN-2011005-01

Finding

Title

Potential Technical Specification NON-COMPLIANCE While Completing Repairs on Motor Damper 32421

Description

The inspectors identified an unresolved item (URI) due to the potential that Technical Specification (TS) Surveillance Requirement 3.8.1.1 was not performed within one hour of rendering the D5 EDG inoperable on November 10, 2011. On May 15, 2011, the licensee initiated CAP Document 1285989 due to Motor Damper (MD) 32421 (the 21 D5 Diesel Room Exhaust Air MD) failing to close as expected during testing. The licensee immediately evaluated this condition and determined that the failure of MD-32421 to operate as expected did not impact the operability of the diesel ventilation system or the D5 EDG since the outside air temperature was warm enough to keep the D5 EDG room within the required temperature limits. Night shift operations personnel removed MD-32421 from service for repairs at 5:24 a.m. on November 10, 2011. In order to complete the repairs, MD-32420 and MD-32422 were also removed from service. After removing the MDs from service, operations personnel determined that the D5 EDG remained operable and available since the temperature in the D5 EDG room was greater than 50 degrees Fahrenheit (the minimum allowed room temperature). At 6:37 a.m., day shift operations personnel declared the D5 EDG inoperable because the method used to remove the MDs from service eliminated the ability of the dampers to modulate as specified in the USAR. Approximately 20 minutes later, operations personnel restored the ability of all three MDs to modulate and the D5 EDG was declared operable. The licensee initiated CAPs 1312509 and 1313190 to document this issue. The inspectors reviewed TS 3.8.1, AC Sources-Operating, to determine whether operations personnel had complied with TS requirements while removing the MDs from service. Technical Specification Limiting Condition for Operation (LCO) 3.8.1.B required that TS Surveillance Requirement 3.8.1.1 be performed within one hour of rendering an EDG inoperable. During a review of the November 10, 2011, Operations Station Log and the LCO Log the inspectors identified that the MDs discussed above were removed from service between 5:22 and 5:25 a.m. However, TS Surveillance Requirement 3.8.1.1 was not performed within one hour since the operations crew did not believe that removing the MDs from service rendered the D5 EDG inoperable. The licensee was reviewing licensing and design basis documentation for the D5 EDG and the D5 EDG ventilation system at the conclusion of the inspection period. The licensee planned to use the review results to determine whether removing the MDs from service such that they were no longer able to modulate impacted the D5 EDG operability. As a result, this item was determined to be unresolved pending the inspectors review of the licensees licensing and design basis information

01
Site:	Prairie Island
Report	IR 05000306/2011005 Section 1R01
Date counted	Dec 31, 2011 (2011Q4)
Type:	URI:
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71111.01
Inspectors (proximate)	C Moore C Zoia D Betancourt K Riemer K Stoedter P Cardona Morales P Voss P Zurawski S Shahr 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-2011005-01

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