05000282/FIN-2008005-01: Difference between revisions

Finding

Title

Failure of Contractors to Follow Welding Procedures

Description

The inspectors identified a finding of very low safety significance and an associated NCV of 10 CFR Part 50, Appendix B, Criterion V, in September 2008 for the failure of contractor welders to adhere to welding procedures during structural weld overlay (SWOL) repairs on a pressurizer surge nozzle. A review of the weld records indicated that the welders either failed to utilize the correct travel speeds in performing the SWOL or to accurately document relative travel speed settings as required by procedure, in order to ensure that the correct heat input (a welding essential variable) was maintained. The inspectors also identified that the welders failed to input the correct welding parameters into the welding controller for a portion of the overlay as required by procedure. This resulted in the heat input parameters being exceeded. Corrective actions for this issue included the removal and repair of the weld. This finding was more than minor because if left uncorrected, it would have become a more significant safety concern. Specifically, the failure to control the heat input could have reduced the impact toughness of the pressurizer weldment such that it would be susceptible to brittle fracture. The finding was of very low safety significance (Green) because the contractor subsequently addressed the programmed versus actual travel speed discrepancies and determined that the resulting heat inputs were bound by the welding procedure specifications (WPS) parameters. Furthermore, the contractor repaired the surge nozzle as a result of using the incorrect welding parameters before returning Unit 2 to service. The inspectors determined that this finding was cross-cutting in the Human Performance, Work Practices area because licensee personnel failed to ensure supervisory and management oversight of contractor activities such that nuclear safety was supported

01
Site:	Prairie Island
Report	IR 05000282/2008005 Section 1R08
Date counted	Dec 31, 2008 (2008Q4)
Type:	NCV: Green
cornerstone	Initiating Events
Identified by:	NRC identified
Inspection Procedure:	IP 71111.08
Inspectors (proximate)	D Mcneil G O'Dwyer J Giessner K Stoedter L Haeg P Zurawski R Jickling R Winter T Bilik
CCA	H.2, Field Presence
INPO aspect	LA.2
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v • d • e

Finding - Prairie Island - IR 05000282/2008005

1(0)2(5)3(5)4(5)5(9)6(0)7(1)8(1)9(2)10(0)201(0)402(0)403(0)404(0)502(0)10(0)30(0)

IR 05000282/2008005: 1 2 3 4 5 7 8 1 6

Finding List (Prairie Island) @ 2008Q4

CCA Matrix: 2008Q4

	Q	CCA	Title
05000306/FIN-2008002-02	2008Q1		Concerns Regarding Testing of Check valve SI-9-5
05000282/FIN-2008002-01	2008Q1	P.2	TSC Ventilation Issues Resulted in Inadequate Emergency Response Facility
05000282/FIN-2008002-03	2008Q1	H.4 H.5	Worker not in compliance with TS 5.7.1.b received an ED dose-rate alarm when he inappropriately entered a HRA of the plant during steam generator set-up work.
05000282/FIN-2008003-02	2008Q2	H.2	USAR Not Updated to Include Analyses
05000282/FIN-2008003-03	2008Q2	P.2	Failure to Test Check Valve SI-9-5 Under Suitable Environmental Conditions
05000282/FIN-2008003-01	2008Q2		11 TURBINE-DRIVEN Auxiliary Feedwater Pump Inoperable During Startup from Outage 1R25
05000282/FIN-2008004-02	2008Q3	H.14	Load Sequencer Test Procedure Conflicts With Vendor Manual Information
05000282/FIN-2008004-01	2008Q3	P.3	Failure to Maintain Staff Respiratory Qualifications Including Personnel Qualifications Necessary for Emergency Response Duties As Required By Station Procedures.
05000282/FIN-2008004-03	2008Q3	H.14	11 Turbine-Driven Auxiliary Feedwater Pump Inoperable Due to Improperly Installed Insulation
05000282/FIN-2008005-07	2008Q4	H.13	Respirator Qualification Deficiency Results in Non-Compliance with 10 CFR Part 50, Appendix R
05000282/FIN-2008008-01	2008Q4	H.7	11 TDAFWP Inoperable for a Time Period Which Significantly Exceeded Time Allowed by TS
05000282/FIN-2008005-04	2008Q4	H.13	Operator Manipulates Incorrect Component due to Failure to Follow Procedures
05000306/FIN-2008005-06	2008Q4		Abnormal Operating Procedure Entry Conditions
05000282/FIN-2008005-02	2008Q4		Component Cooling Water Susceptible to High Energy Line Break Interaction
05000282/FIN-2008007-01	2008Q4	H.14	Failure to Perform a 10 CFR 50.59 Evaluation for Bulk Hydrogen Storage Facility
05000282/FIN-2008005-01	2008Q4	H.2	Failure of Contractors to Follow Welding Procedures
05000282/FIN-2008005-03	2008Q4	H.2	Control Rod Bent due to Contractors Failure to Follow Procedures
05000282/FIN-2008005-05	2008Q4	H.13	Decrease in Reactor Power due to Failure to Follow Procedures

Self-Identified List (Prairie Island)

	Q	Title
05000282/FIN-2008002-04	2008Q1	Licensee-Identified Violation
05000282/FIN-2008002-05	2008Q1	Licensee-Identified Violation
05000282/FIN-2008003-04	2008Q2	Licensee-Identified Violation
05000282/FIN-2008003-05	2008Q2	Licensee-Identified Violation
05000282/FIN-2008004-04	2008Q3	Licensee-Identified Violation
05000282/FIN-2008004-05	2008Q3	Licensee-Identified Violation
05000282/FIN-2008005-08	2008Q4	Licensee-Identified Violation

[Prairie Island Findings full list]

@@ Line 12: / Line 12: @@
 | identified by = NRC
 | Inspection procedure = IP 71111.08
-| Inspector = D Mcneil, G O, 'Dwyerj Giessner, K Stoedter, L Haeg, P Zurawski, R Jickling, R Winter, T Bilik
+| Inspector = D Mcneil, G O'Dwyer, J Giessner, K Stoedter, L Haeg, P Zurawski, R Jickling, R Winter, T Bilik
 | CCA = H.2
 | INPO aspect = LA.2

05000282/FIN-2008005-01: Difference between revisions

Latest revision as of 00:14, 22 February 2018

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05000282/FIN-2008005-01: Difference between revisions

Latest revision as of 00:14, 22 February 2018

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