05000400/FIN-2018003-01

Finding

Title

Failure to Implement Adequate Periodic Exercising of Turbine Trip Solenoid Operated Valves

Description

A self-revealing Green finding was identified for the licensees failure to establish and implement adequate preventive maintenance (PM) for exercising the turbine electro-hydraulic auto-stop trip (AST) solenoid operated valves (SOVs) in accordance with procedure AD-EG-ALL-1202, Preventive Maintenance and Surveillance Testing Administration. As a result of the failure to exercise the SOVs at the weekly vendor recommended frequency, three of the four SOVs experienced mechanical binding (sticking) which rendered the turbine emergency trip system incapable of tripping the main turbine within the time response requirements of Technical Specifications.

01
Site:	Harris
Report	IR 05000400/2018003 Section 4OA2
Date counted	Sep 30, 2018 (2018Q3)
Type:	Finding: Green
cornerstone	Mitigating Systems
Identified by:	Self-revealing
Inspection Procedure:	IP 71152
Inspectors (proximate)	J Zeiler A Patz D Hardage
CCA	P.5, Operating Experience
INPO aspect	CL.1
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v • d • e

Finding - Harris - IR 05000400/2018003

1(1)2(7)3(1)4(0)5(0)6(0)10(0)11(0)201(0)301(0)410(1)

IR 05000400/2018003: 1

Finding List (Harris) @ 2018Q3

CCA Matrix: 2018Q3

	Q	CCA	Title
05000400/FIN-2018001-01	2018Q1		Adequacy of Fire Brigade Response During Fire Dril
05000400/FIN-2018410-01	2018Q1		Security
05000400/FIN-2018002-01	2018Q2	P.1	Failure to Promptly Identify and Correct a Condition Adverse to Quality For a Through-Wall Leak in the ESW Screen Wash Piping
05000400/FIN-2018002-02	2018Q2	P.6	Inadequate Fire Brigade Performance Assessment of Announced Fire Drill
05000400/FIN-2018002-03	2018Q2		Failure to Adequately Document Changes to the Emergency Plan
05000400/FIN-2018002-04	2018Q2	H.12	Failure to Implement Adequate Steam Generator Blowdown Demineralizer Control Procedures
05000400/FIN-2018002-05	2018Q2	H.8	Failure to Follow Secondary Water Chemistry Plan for Elevated Levels of Secondary Water Impurities
05000400/FIN-2018002-06	2018Q2	H.5	Failure to Implement Viable Compensatory Actions with Seismic Monitoring System Out of Service for Planned Preventive Maintenance
05000400/FIN-2018002-07	2018Q2		Minor Violation
05000400/FIN-2018003-01	2018Q3	P.5	Failure to Implement Adequate Periodic Exercising of Turbine Trip Solenoid Operated Valves

Self-Identified List (Harris)

[Harris Findings full list]

05000400/FIN-2018003-01

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