05000424/FIN-2018002-02

Finding

Title

High Vibrations on Unit 2 NSCW Pump No. 3 Result in Pump Inoperability

Description

An NRC-identified Green NCV of 10 CFR 50 Appendix B, Criterion III, Design Control, was identified for the licensees failure to ensure that design control measures for the Unit 2 train A (2A) nuclear service cooling water (NSCW) pump no. 3 motor replacement, conducted in May 2015, adequately evaluated and addressed structural resonance of the pump, commensurate with the original pumps. As a result, the pump operated at higher than desired vibrations, since installation, causing accelerated bearing wear and premature failure of the motor in February 2018. The licensees failure to ensure that design control measures for the 2A NSCW pump no. 3 motor replacement adequately evaluated and addressed structural resonance of the pump, commensurate with the original pumps was a performance deficiency.

02
Site:	Vogtle
Report	IR 05000424/2018002 Section 4OA2
Date counted	Jun 30, 2018 (2018Q2)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71152
Inspectors (proximate)	M Endress A Alen S Sanchez C Fontana T Morrissey J Hamman A Blamey
Violation of:	10 CFR 50 Appendix B 10 CFR 50 Appendix B Criterion III, Design Control
CCA	H.6, Design Margins
INPO aspect	WP.2
'
v • d • e

Finding - Vogtle - IR 05000424/2018002

1(3)2(2)3(1)4(0)5(0)6(0)11(0)90(0)410(3)411(0)412(0)440(0)

IR 05000424/2018002: 1 2

Finding List (Vogtle) @ 2018Q2

CCA Matrix: 2018Q2

	Q	CCA	Title
05000425/FIN-2017003-02	2017Q3	H.1	Failure to Maintain ECCS Flow Balance and Check Valve Inservice Test Procedure
05000425/FIN-2017003-03	2017Q3	H.12	Failure to Maintain Cleanliness of Motor Operated Valve Limit Switch Compartment
05000424/FIN-2017406-01	2017Q3		Security
05000424/FIN-2017003-01	2017Q3	H.11	Failure to Implement and Establish Appropriate Work Instructions Affecting Safety-Related Chiller
05000425/FIN-2017009-01	2017Q4		Failure to Install Drain Hole
05000425/FIN-2017004-01	2017Q4		Failure to Implement and Establish Appropriate Work Instructions for PMT of Namco Limit Switch on 2HV-8920
05000424/FIN-2017004-02	2017Q4	H.1	Failure to Maintain NEMA Type 4 Qualification for the Nuclear Service Cooling Water Pumps
05000424/FIN-2018001-01	2018Q1		Failure to Provide Work Instructions for Sealing Around NSCW System Pump Shaft Well Access Openings
05000424/FIN-2018001-02	2018Q1		Inadequate Acceptance Criteria for Testing of NSCW Pump Discharge Valves
05000425/FIN-2018001-03	2018Q1		Inadequate Refurbishment of Emergency Diesel Generator Pneumatic Control System Logic Boards
05000424/FIN-2018410-01	2018Q1		Security
05000424/FIN-2018410-02	2018Q1		Security
05000424/FIN-2018410-03	2018Q1		Security
05000424/FIN-2018002-01	2018Q2	H.9	Failure to Adequately Load Emergency Deisel Generator (EDG) During 24-Hour Endurance Test
05000424/FIN-2018002-02	2018Q2	H.6	High Vibrations on Unit 2 NSCW Pump No. 3 Result in Pump Inoperability

Self-Identified List (Vogtle)

	Q	Title
05000424/FIN-2017003-04	2017Q3	Licensee-Identified Violation
05000424/FIN-2017003-05	2017Q3	Licensee-Identified Violation
05000424/FIN-2017004-03	2017Q4	Licensee-Identified Violation

[Vogtle Findings full list]

05000424/FIN-2018002-02

Navigation menu

Search