05000388/FIN-2016004-03

Finding

Title

Refuel Floor Radiation Monitor Inoperable Due to being Improperly Calibrated

Description

Green. A finding of very low safety significance (Green) and NCV of TS 5.4.1, Procedures was self-revealed when Susquehanna incorrectly calibrated the Unit 1 B refuel floor high exhaust duct high radiation monitor on November 15, 2014. This impacted the initiation capability of secondary containment isolation and control room emergency outside air supply system (CREOASS) and resulted in Susquehanna exceeding the allowed outage time for TSs 3.3.6.2, Secondary Containment Isolation, and 3.3.7.1, CREOASS Instrumentation. Upon identification of the issue, Susquehanna properly calibrated the radiation monitor to restore its operability. This finding is more than minor because it is associated with the Human Performance (Routine OPS/Maintenance Performance) attribute of the Barrier Integrity cornerstone and affected the cornerstone objective of providing reasonable assurance that physical design barriers (Secondary Containment and Control Room Ventilation) protect the public from radionuclide releases caused by accidents or events. Specifically, incorrectly calibrating the radiation monitor resulted in both systems being inoperable for almost two years. In accordance with IMC 0609.04, Initial Characterization of Findings, and Exhibit 3 of IMC 0609, Appendix A, The SDP for Findings At-Power, both dated June 19, 2012, the inspectors determined that this finding is of very low safety significance (Green) because the performance deficiency was only associated with the radiological barrier function of the Control Room and Secondary Containment. This finding had a cross-cutting aspect in the area of Human Performance, Avoid Complacency because Susquehanna did not recognize and plan for the possibility of mistakes, latent problems, or inherent risk, even while expecting successful outcomes. Specifically, Susquehanna personnel did not consider the potential undesired consequences of their actions before performing work and implement appropriate error-reduction tools (e.g. self-check, peer-check). [H.12]

03
Site:	Susquehanna
Report	IR 05000388/2016004 Section 1R22
Date counted	Dec 31, 2016 (2016Q4)
Type:	NCV: Green
cornerstone	Barrier Integrity
Identified by:	Self-revealing
Inspection Procedure:	IP 71111.22
Inspectors (proximate)	B Smith D Schroeder E Gray J Deboer J Furia J Greives P Ott S Anderson T Daun
Violation of:	Technical Specification - Procedures
CCA	H.12, Avoid Complacency
INPO aspect	QA.4
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v • d • e

Finding - Susquehanna - IR 05000388/2016004

1(5)2(7)3(2)4(5)5(0)6(0)7(2)8(4)301(0)403(0)406(1)502(0)502(0)

IR 05000388/2016004: 1 2 4 5 3

Finding List (Susquehanna) @ 2016Q4

CCA Matrix: 2016Q4

	Q	CCA	Title
05000387/FIN-2016001-03	2016Q1	H.5	Failure to Correct Fatigue Related Cracking of the B RRP Lower Seal Cavity Vent Line
05000388/FIN-2016001-01	2016Q1	H.5	Failure to Assess and Manage Risk of Maintenance Activities for a SLC System Flow Surveillance
05000387/FIN-2016001-02	2016Q1		Failure to Report Loss of Safety Function as Required by 10 CFR 50.73(a)(2)(v)
05000387/FIN-2016002-06	2016Q2	H.4	Entry into a Locked High Radiation Area without Radiological Briefing
05000387/FIN-2016002-05	2016Q2	P.3	Entry into a High Radiation Area without Radiological Briefing
05000387/FIN-2016002-04	2016Q2	P.1	Failure to Critique an Incorrect PAR Notification
05000387/FIN-2016002-03	2016Q2	H.13	Failure of B EDG to Reach Rated Frequency within 10 Seconds
05000387/FIN-2016002-02	2016Q2	P.2	Failure to Promptly Correct a Condition Adverse to Quality with A EDG MOC Switch
05000387/FIN-2016002-01	2016Q2	H.14	Failure to Promptly Identify a Condition Adverse to Quality Associated with Primary Containment Isolation Valves
05000388/FIN-2016002-07	2016Q2	H.8	HPCI Overridden Prior to Manual Reactor Scram
05000387/FIN-2016008-01	2016Q3	H.4	Failure to Write a Condition Report for Degraded Conditions Which Challenged Operability of Safety Related Equipment
05000387/FIN-2016008-02	2016Q3	H.8	Failure to Implement and Maintain Quality Procedure Results in Control Room Chiller Inoperability
05000387/FIN-2016008-04	2016Q3		Failure to Promptly Identify and Correct a Condition Adverse to Quality on Vital 480 VAC MCCs
05000388/FIN-2016003-01	2016Q3	H.5	Inadequate Work Instructions for Breaching Internal Flood Barrier
05000387/FIN-2016003-02	2016Q3	H.12	Risk Management Actions Not Adequately Implemented
05000387/FIN-2016406-01	2016Q3	P.2	Security
05000388/FIN-2016008-03	2016Q3	P.3	Failure to Implement or Develop Timely Interim or Final Corrective Actions for a Degraded Condition
05000387/FIN-2016004-05	2016Q4		LERs Associated with Reactor Coolant Pressure Boundary Leakage
05000387/FIN-2016004-04	2016Q4	H.5	Auxiliary Bus Load Shed when a Daisy Chained Neutral was Interrupted during Maintenance
05000388/FIN-2016004-03	2016Q4	H.12	Refuel Floor Radiation Monitor Inoperable Due to being Improperly Calibrated
05000387/FIN-2016004-02	2016Q4	P.2	Failure to Promptly Correct a Condition Adverse to Quality with LPCI Swing Bus Automatic Transfer Switches
05000387/FIN-2016004-01	2016Q4	H.7	Failure Rates Exceed (20%) Twenty Percent for Biennial Requalification Exam
05000387/FIN-2016007-01	2016Q4		Failure to Specify and Maintain Safety-Related Quality Standards and Materials Essential for Reactor Core Isolation Cooling

Self-Identified List (Susquehanna)

	Q	Title
05000387/FIN-2016001-04	2016Q1	Licensee-Identified Violation
05000388/FIN-2016001-05	2016Q1	Licensee-Identified Violation
05000387/FIN-2016007-02	2016Q4	Licensee-Identified Violation

[Susquehanna Findings full list]

05000388/FIN-2016004-03

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