05000331/FIN-2018002-01

Finding

Title

Inappropriate Procedural Guidance Resulted in Loss of Scram Function and Failure to Enter Technical Specification Limiting Condition for Operation

Description

The inspectors identified a finding of very low safety significance (Green) and a non-cited violation of 10 CFR 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, for the failure to have procedures appropriate to the circumstance for testing the main steam isolation valve (MSIV) and turbine stop valve (TSV) closure functions. Specifically, STP 3.3.1.117, MSIV Functional Test, and STP 3.3.1.119, Main Turbine Stop and Combined Intermediate Valves Test, directed the use of a reactor protection system test box which disabled the MSIV and the TSV closure automatic reactor scram functions while testing specific combinations of MSIVs and TSVs and failed to require entry into appropriate Technical Specification Limiting Condition for Operation action statements.

01
Site:	Duane Arnold
Report	IR 05000331/2018002 Section 4OA3
Date counted	Jun 30, 2018 (2018Q2)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71153
Inspectors (proximate)	C Norton R Stone J Beavers T Nakanishi V Myers K Stoedter
Violation of:	10 CFR 50 Appendix B 10 CFR 50 Appendix B Criterion V Technical Specification
CCA	H.1, Resources
INPO aspect	LA.1
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v • d • e

Finding - Duane Arnold - IR 05000331/2018002

1(1)2(2)3(2)4(0)5(0)6(0)10(2)201(0)410(0)411(1)412(0)413(0)414(0)503(0)

IR 05000331/2018002: 1 2

Finding List (Duane Arnold) @ 2018Q2

CCA Matrix: 2018Q2

	Q	CCA	Title
05000331/FIN-2017004-02	2017Q4		Failure to Evaluate Site Fire and Explosion Hazards in Accordance with 10 CFR 72.212(b) (6)
05000331/FIN-2017004-01	2017Q4	H.4	Failure to Maintain Reactor Water Level within Procedurally Required Level Band Results in Reactor Recirculation Pump Runback
05000331/FIN-2018001-01	2018Q1		Failure to Perform Nondestructive Examination of Main Steam Isolation Valve 4415 Following Machining of Valve Bore
05000331/FIN-2018010-01	2018Q1		Failure to have Adequate Pre-Fire Plans
05000331/FIN-2018010-02	2018Q1		Failure to Include Operator Action in the Plant Operating Procedure
05000331/FIN-2018002-01	2018Q2	H.1	Inappropriate Procedural Guidance Resulted in Loss of Scram Function and Failure to Enter Technical Specification Limiting Condition for Operation
05000331/FIN-2018011-01	2018Q2		Failure to Translate Environmental Qualification Requirements into Maintenance Procedures/Instructions
05000331/FIN-2018002-02	2018Q2		Minor Violation

Self-Identified List (Duane Arnold)

	Q	Title
05000331/FIN-2018411-01	2018Q1	Licensee-Identified Violation

[Duane Arnold Findings full list]

05000331/FIN-2018002-01

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