05000317/FIN-2018001-01

Finding

Title

Failure to Conduct Adequate Radiation Surveys and Evaluate Potential Radiological Hazards

Description

Aself-revealed Green non-cited violation(NCV)of Title 10 Code of Federal Regulations(10 CFR) 20.1501, Surveys and Monitoring: General, was identified when Exelon failed to perform adequate surveys of the 11 reactor coolant pump bay area following the aggregation of 25 high dose-rate in-core detectors in one area of the flooded refueling cavity, which is adjacent to the pump bay. Surveys were not performed as required after radiological conditions changed and radiological hazard mitigation measures, such as locking and controlling access in accordance with Exelon procedures, were not implemented, resulting in accessible dose-rates of up to 2,000 millirem per hour(mrem/hr)in the pump bay

01
Site:	Calvert Cliffs
Report	IR 05000317/2018001 Section HUMAN PERFORMANCE, NO CC AREA
Date counted	Mar 31, 2018 (2018Q1)
Type:	NCV:
cornerstone	Or Safety
Identified by:	Self-revealing
Inspection Procedure:	IP 2RS1
Inspectors (proximate)	71124.0
Violation of:	10 CFR 20, Standards for Protection Against Radiation 10 CFR 20.1501, Surveys and Monitoring 10 CFR 20.1601, Control of Exposure From External Sources in Restricted Areas
CCA	QA.2,
INPO aspect	NO SL
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v • d • e

Finding - Calvert Cliffs - IR 05000317/2018001

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

IR 05000317/2018001: 1

Finding List (Calvert Cliffs) @ 2018Q1

CCA Matrix: 2018Q1

	Q	CCA	Title
05000317/FIN-2017004-01	2017Q4	P.6	Inadequate Assessment of Fire Brigade Performance During an Announced Fire Drill
05000317/FIN-2018001-01	2018Q1		Failure to Conduct Adequate Radiation Surveys and Evaluate Potential Radiological Hazards

Self-Identified List (Calvert Cliffs)

[Calvert Cliffs Findings full list]

05000317/FIN-2018001-01

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