05000446/FIN-2018011-02

Finding

Title

Failure to Follow a Quality Procedure Associated with the Reactor Makeup and Chemical Control System

Description

The inspectors reviewed a self-revealed, Green, non-cited violation of Technical Specification 5.4.1.a for the licensees failure to follow a quality procedure associated with the reactor makeup and chemical control system which resulted in an unanticipated loss of inventory from the volume control tank in the reactor coolant system. Specifically, on April 28, 2017, a reactor operator failed to complete step 5.2.7.G in quality procedure SOP-104B, Reactor Make-up and Chemical Control System, which would isolate the volume control tank from the chemical and volume control system, prior to directing a nuclear equipment operator to complete subsequent steps 5.2.7.K and 5.2.7.L, which opened isolation valves to the refueling water storage tank. These actions resulted in the unanticipated loss of inventory from the volume control tank into the refueling water storage tank.

02
Site:	Comanche Peak
Report	IR 05000446/2018011 Section 4OA3
Date counted	Sep 30, 2018 (2018Q3)
Type:	NCV: Green
cornerstone	Initiating Events
Identified by:	Self-revealing
Inspection Procedure:	IP 71153
Inspectors (proximate)	R Alexander A Athar J Josey M Haire
Violation of:	Technical Specification - Procedures
CCA	H.12, Avoid Complacency
INPO aspect	QA.4
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v • d • e

Finding - Comanche Peak - IR 05000446/2018011

1(5)2(3)3(2)4(0)5(0)6(0)10(2)11(2)12(0)90(0)301(0)402(0)403(0)404(0)405(0)406(0)

IR 05000446/2018011: 1 2

Finding List (Comanche Peak) @ 2018Q3

CCA Matrix: 2018Q3

	Q	CCA	Title
05000445/FIN-2018001-01	2018Q1		Failure to Follow Commercial Grade Dedication Process
05000445/FIN-2018001-02	2018Q1		Failure to Incorporate Design Information Into System Test Procedures
05000445/FIN-2018001-03	2018Q1		Failure to Provide an Adequate Procedure
05000445/FIN-2018001-04	2018Q1		Inadequate Maintenance Procedure for Feedwater Valves
05000445/FIN-2018001-05	2018Q1		Failure to Correct a Significant Condition Adverse to Quality
05000445/FIN-2018002-01	2018Q2	H.11	Failure to Identify and Correct a Condition Adverse to Quality
05000445/FIN-2018002-02	2018Q2	H.7	Unacceptable Preconditioning of Main Steam Isolation Valves
05000445/FIN-2018002-03	2018Q2		Failure to Incorporate Design Information Into System Test Procedures
05000445/FIN-2018010-01	2018Q3		Failure to Establish Test Program to Verify Residual Heat Removal Suction Valve Capability
05000445/FIN-2018010-02	2018Q3		Failure to Provide Procedural Guidance for the Failure of a Component Cooling Water Surge Tank Makeup Valve
05000446/FIN-2018011-01	2018Q3		Failure to Maintain a Quality Record Complete and Accurate in All Material Respects
05000446/FIN-2018011-02	2018Q3	H.12	Failure to Follow a Quality Procedure Associated with the Reactor Makeup and Chemical Control System
05000445/FIN-2018003-01	2018Q3		Failure to Maintain the Ability to Withstand a Station Blackout
05000445/FIN-2018003-02	2018Q3		Failure to Establish Adequate Procedural Guidance for Processing Technical Changes Performed by A Vendor on Installed Plant Equipment

Self-Identified List (Comanche Peak)

[Comanche Peak Findings full list]

05000446/FIN-2018011-02

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