05000282/FIN-2012002-09

Finding

Title

Review of Root Cause Evaluation for March 6, 2012, Notice of Unusual Event

Description

On March 6, 2012, operations personnel declared a Notice of Unusual Event due to receiving an indication that Unit 2 RCS leakage was greater than 10 gallons per minute. The inspectors were in the control room when the event was declared. The inspectors observed the operators respond to the event to ensure that the licensees procedural requirements were followed. The inspectors also monitored available control room indications to determine whether any equipment complications occurred while the operators were responding to the event. None were identified. The inspectors initial review of this event determined that a leak in the RCS had not occurred. However, it appeared that the procedures used to drain a portion of the RCS and the Unit 2 reactor head vent piping may be deficient. Both the inspectors and the licensees review of this event were ongoing at the conclusion of the inspection period. As a result, this item will be carried as a URI pending the inspectors review of the licensees root cause evaluation report and the proposed corrective actions

09
Site:	Prairie Island
Report	IR 05000282/2012002 Section 4OA3
Date counted	Mar 31, 2012 (2012Q1)
Type:	URI: Green
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71153
Inspectors (proximate)	N Shah K Riemer C Moorec Moorec Thomas D Passehl D Szwarc J Beavers J Jandovitz K Riemer K Stoedter M Phalen P Zurawski R Langstaff V Myers A Dunlop A Shaikh
INPO aspect
'
v • d • e

Finding - Prairie Island - IR 05000282/2012002

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 05000282/2012002: 1 2 3 4 5 7 8 9 10 11 12 13 6

Finding List (Prairie Island) @ 2012Q1

CCA Matrix: 2012Q1

	Q	CCA	Title
05000306/FIN-2011004-03	2011Q3	H.8	Failure to Make Eight Hour Report Pursuant to 10 CFR 50.72
05000306/FIN-2011004-06	2011Q3		Failure to Provide Complete and Accurate Information in a Licensee Event Report
05000306/FIN-2011004-01	2011Q3	H.14	Radiation Monitors Not Fully Scoped Into or Assessed by the Maintenance Rule Program
05000306/FIN-2011004-02	2011Q3	H.8	Corrective Action Assignments Closed Without Completion of Tasks
05000282/FIN-2011004-04	2011Q3	H.8	Failure to Make Eight Hour Report Pursuant to 10 CFR 50.72
05000282/FIN-2011004-07	2011Q3		Failure to Provide Complete and Accurate Information in a Licensee Event Report
05000306/FIN-2011004-08	2011Q3	P.5	Unit 2 Reactor Trip due to Mis-operation of Substation Breakers
05000306/FIN-2011004-05	2011Q3		Failure to Incorporate Revised Battery Room Temperature Information into Existing Operability Recommendation
05000282/FIN-2011012-01	2011Q4		Flammable Gas Bottles Installed and/or Stored in the Auxiliary Building
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
05000282/FIN-2011012-02	2011Q4	H.13	Failure to Correct a Condition Adverse to Quality
05000306/FIN-2011005-04	2011Q4	H.14	Failure to Complete Immediate Operability Determination on Molded Case Circuit Breakers
05000282/FIN-2012002-08	2012Q1		Unit 2 Manual Reactor Trip During Shutdown for Outage 2R27
05000282/FIN-2012002-02	2012Q1		Review Of Steam Exclusion Damper Maintenance Effectiveness
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

Self-Identified List (Prairie Island)

	Q	Title
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
05000282/FIN-2012002-13	2012Q1	Licensee-Identified Violation
05000282/FIN-2012002-12	2012Q1	Licensee-Identified Violation

[Prairie Island Findings full list]

05000282/FIN-2012002-09

Navigation menu

Search