05000352/FIN-2018002-01

Finding

Title

Failure to Conduct Adequate Radiation Surveys and Evaluate Potential Radiological Hazards

Description

A self-revealing Green finding and associated NCV of 10 CFR 20.1501, Surveys and Monitoring: General, was identified when Exelon failed to perform adequate loose surface contamination surveys of the Unit 1 RWCU isolation valve room prior to authorizing work to hang shadow shielding near the HV-051-1F017A valve, and also during the conduct of the work itself. Exelon also did not identify very high levels of loose surface contamination on overhead piping and structures which surrounded the work area. This failure resulted in unplanned internal radiation exposures to three personnel, including an RPT who was assigned to monitor the radiological aspects of the work.

01
Site:	Limerick
Report	IR 05000352/2018002 Section 2RS1
Date counted	Jun 30, 2018 (2018Q2)
Type:	NCV: Green
cornerstone	Or Safety
Identified by:	Self-revealing
Inspection Procedure:	IP 71124.01
Inspectors (proximate)	S Rutenkroger M Henrion C Safouri S Barber A Turilin H Anagnostopoulos L Andrews N Floyd E Dipaolo J Greives
Violation of:	10 CFR 20, Standards for Protection Against Radiation 10 CFR 20.1501, Surveys and Monitoring
CCA	H.11, Challenge the Unknown
INPO aspect	QA.2
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Finding - Limerick - IR 05000352/2018002

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

IR 05000352/2018002: 1 2

Finding List (Limerick) @ 2018Q2

CCA Matrix: 2018Q2

	Q	CCA	Title
05000353/FIN-2017003-01	2017Q3	H.7	Operational Condition Mode Change from Startup to Run was Made with RCIC Inoperable
05000352/FIN-2017007-01	2017Q4	H.6	Failure to Document Technical Basis for Service Temperature Changes for Limitorque Motor Operated Valve Limit Switches
05000353/FIN-2017004-01	2017Q4	H.5	Unplanned HPCI Inoperability Due to Isolating All Suction Sources During Post-Maintenance Te s t i n g
05000353/FIN-2018001-01	2018Q1		Failure of Emergency Diesel Generator Lube Oil Pipe Nipple Fitting
05000352/FIN-2018001-02	2018Q1		Emergency Diesel Generator Combustion Air Overheating
05000352/FIN-2018002-01	2018Q2	H.11	Failure to Conduct Adequate Radiation Surveys and Evaluate Potential Radiological Hazards
05000352/FIN-2018002-02	2018Q2		Unit 1 Core Spray Pump Failed to Start Resulting in Condition Prohibited by Technical Specifications

Self-Identified List (Limerick)

	Q	Title
05000352/FIN-2017003-02	2017Q3	Licensee-Identified Violation

[Limerick Findings full list]

05000352/FIN-2018002-01

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