05000455/FIN-2008003-03: Difference between revisions

Finding

Title

Failure to Perform Evaluation of a Leaking Bolted Connection

Description

The inspectors identified a finding of very low safety significance and associated NCV of 10 CFR 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, regarding the licensees failure to perform adequate evaluations of the boric acid leakage from bolted connections in accordance with Procedure ER-AP-331-1002, Boric Acid Corrosion Control Program Identification, Screening, and Evaluations. This issue was entered into the licensees CAP. Licensee corrective actions included revising the procedure and re-performing the evaluation. As implied by Example 4a of IMC 0612, Power Reactor Inspection Reports, Appendix E, Examples of Minor Issues, the finding was not minor under the category of Insignificant Procedural Errors, because the licensee routinely failed to perform/document engineering evaluations for bolted connections with boric acid leaks. A failure to adequately perform the required evaluation could result in equipment susceptible to the corrosive effects of boric acid being returned to service in a degraded condition and so could become a more significant safety concern. The inspectors applied the IMC 0609, Attachment 0609.04, to this finding. The inspectors checked the Reactivity Control Degraded box in the Mitigation System Cornerstone column of Table 2, and answered no to all of the questions in the Mitigation System Cornerstone column of Table 4a, to conclude that the finding was of very low safety significance (Green). Specifically, the finding did not represent a loss of any safety function. The inspectors determined that this finding was related to the crosscutting component of Human Performance for Work Practices (H.4.(b))

03
Site:	Byron
Report	IR 05000455/2008003 Section 1R08
Date counted	Jun 30, 2008 (2008Q2)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71111.08
Inspectors (proximate)	B Bartlett C Acosta C Thompson C Zoia D Jones J Cassidy J Jacobson N Feliz Adorno R Jickling R Ng R Russell R Skokowski T Bilik V Meghani
CCA	H.8, Procedure Adherence
INPO aspect	WP.4
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Finding - Byron - IR 05000455/2008003

1(0)2(6)3(9)4(3)5(6)6(3)7(0)8(2)9(2)301(0)402(0)403(0)1(0)1(0)

IR 05000455/2008003: 6 1 2 3 4 5 7 8 10

Finding List (Byron) @ 2008Q2

CCA Matrix: 2008Q2

	Q	CCA	Title
05000454/FIN-2007004-02	2007Q3	H.14	Inadequate Basis in 10 CFR 50.59 Evaluation Associated with a Special Test Procedure
05000455/FIN-2008002-03	2008Q1		Unit 2 Notice of Unusual Event Due to Loss of Both System Auxiliary Transformers
05000454/FIN-2008002-02	2008Q1	H.5	Plant Barrier Impairment Permit Not Followed
05000454/FIN-2008002-01	2008Q1	H.2	Failure to Evaluate Radiological Hazards for Alpha Radiation
05000454/FIN-2007009-05	2008Q1	P.1 P.1(a)	Failure to Identify Corroded 0SX138B Valve Bolting During VT-2 Examination
05000454/FIN-2007009-04	2008Q1	H.14	Trm Change Bypasses Procedure Change and Safety Evaluation Processes
05000455/FIN-2008002-04	2008Q1		Unit 1 Train B Auxiliary Feedwater Pump Diesel Fire and Shutdown During Surveillance
05000454/FIN-2007009-02	2008Q1	H.14	Failure to Implement Timely Corrective Actions for Degraded Sx Riser Piping
05000454/FIN-2008006-03	2008Q1	H.5	Unauthorized Transient Combustibles
05000454/FIN-2008006-02	2008Q1		Inadequate Corrective Actions for Motor Operated Valve Breaker Magnetic Trip Settings
05000454/FIN-2007009-01	2008Q1	H.14	Operating Experience Procedure Not Followed for Service Water Corrosion Event
05000454/FIN-2008006-01	2008Q1	H.9 H.2(b)	Failure to Perform 10 CFR 50.59 Evaluations for Changes in Assumed Operator Times
05000454/FIN-2007009-03	2008Q1	H.2(a) H.6	Inadequate Design Margins for Continued Operation of Sx Riser Pipes
05000455/FIN-2008003-04	2008Q2	H.2	Failure to Correctly Tighten Fittings Leads to Failure to Start During a Surveillance of the 0B Sx Makeup Pump
05000455/FIN-2008003-05	2008Q2	H.5	Failure to Perform an Updated Risk Evaluation Prior to Surveillance Testing of the Unit 1 Train a Diesel Generator Based on Existing Plant Conditions
05000455/FIN-2008003-07	2008Q2		Design Bases RE-ANALYSIS of the Ultimate Heat Sink
05000454/FIN-2008003-06	2008Q2		Unit 1 and Unit 2 Auxiliary Feedwater Tunnel Hatch Margin to Safety
05000455/FIN-2008003-03	2008Q2	H.8	Failure to Perform Evaluation of a Leaking Bolted Connection
05000455/FIN-2008003-01	2008Q2	H.8	Fire Suppression Sprinkler Obstruction in the Diesel Oil Storage Tank Room
05000455/FIN-2008003-02	2008Q2	H.14	Failure to Correctly Evaluate and Disposition of a Weld Indication

Self-Identified List (Byron)

	Q	Title
05000454/FIN-2008002-05	2008Q1	Licensee-Identified Violation
05000454/FIN-2008002-06	2008Q1	Licensee-Identified Violation
05000455/FIN-2008003-08	2008Q2	Licensee-Identified Violation
05000455/FIN-2008003-10	2008Q2	Licensee-Identified Violation

[Byron Findings full list]

@@ Line 1: / Line 1: @@
 {{finding
 | title = Failure to Perform Evaluation of a Leaking Bolted Connection
 | docket = 05000455
 | inspection report = IR 05000455/2008003

05000455/FIN-2008003-03: Difference between revisions

Latest revision as of 23:05, 29 May 2018

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05000455/FIN-2008003-03: Difference between revisions

Latest revision as of 23:05, 29 May 2018

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