05000482/FIN-2018002-02

Finding

Title

Failure to Maintain Adequate Pressurization of the Control Room Envelope

Description

A self-revealed Green NCV of 10 CFR Part 50, Criterion III, Design Control, was identified when the licensee failed to adequately recognize that the cable spreading room floor was a control building ventilation isolation boundary. Specifically, the licensee cut openings in the floor/ceiling between the 2,032 foot and 2,016 foot elevations of the control building and the impact on the control room envelopes ability to pressurize was not recognized. This was a primary contributor to the train B control room emergency ventilation system being unable to maintain the appropriate pressure in the control room envelope.

02
Site:	Wolf Creek
Report	IR 05000482/2018002 Section 4OA2
Date counted	Jun 30, 2018 (2018Q2)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	Self-revealing
Inspection Procedure:	IP 71152
Inspectors (proximate)	D Dodson F Thomas C Alldredge I Anchondo J Melfi J O'Donnell N Taylor
CCA	H.3, Change Management
INPO aspect	LA.5
'
v • d • e

Finding - Wolf Creek - IR 05000482/2018002

1(1)2(3)3(2)4(0)5(0)6(0)7(2)8(0)10(5)11(0)201(4)403(0)404(0)440(0)

IR 05000482/2018002: 1 2 3

Finding List (Wolf Creek) @ 2018Q2

CCA Matrix: 2018Q2

	Q	CCA	Title
05000482/FIN-2017407-01	2017Q3	H.1	Security
05000482/FIN-2017003-01	2017Q3		Programmatic Failure to Scope Floor Drain Function within the Maintenance Rule Monitoring Program
05000482/FIN-2017003-02	2017Q3	P.2	Failure to Ensure the Design Basis was Adequately Represented in the Technical Specification Bases
05000482/FIN-2017003-03	2017Q3	H.1	Failure to Verify Equipment or Systems are Capable of Performing Their Intended Design Function Following Maintenance
05000482/FIN-2017003-04	2017Q3	H.1	Failure to Verify Equipment or Systems are Capable of Performing Their Intended Design Function Following Maintenance
05000482/FIN-2017008-01	2017Q4		InadequateEvaluation of Spurious Valve Operation
05000482/FIN-2017008-02	2017Q4	H.9	Failure to Provide Adequate Emergency Lighting
05000482/FIN-2018001-01	2018Q1		Inadequate Functionality Assessment Associated with the Emergency Excess Letdown Flowpath
05000482/FIN-2018002-01	2018Q2		Announcement of an NRC Inspectors Presence by Station Personnel
05000482/FIN-2018002-02	2018Q2	H.3	Failure to Maintain Adequate Pressurization of the Control Room Envelope
05000482/FIN-2018002-03	2018Q2	H.2	Failure to Adequately Implement Instrumentation and Controls Surveillance Procedures
05000482/FIN-2018007-01	2018Q2	P.2	Failure to Provide Adequate Work Instructions for Preventive Maintenance on Safety-Related Equipment
05000482/FIN-2018007-02	2018Q2		Minor Violation

Self-Identified List (Wolf Creek)

[Wolf Creek Findings full list]

05000482/FIN-2018002-02

Navigation menu

Search