Regarding Corrosion-Induced Bonding Results in Setpoint Drift for Multiple Safety Relief Valves
Person / Time
ML12146A273
Site:	Hatch
Issue date:	05/25/2012
From:	Ajluni M Southern Co, Southern Nuclear Operating Co
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
NL-12-1092 LER 12-004-00
Download: ML12146A273 (12)
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LER-2012-004, Regarding Corrosion-Induced Bonding Results in Setpoint Drift for Multiple Safety Relief Valves

Event date:
Report date:
3212012004R00 - NRC Website
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Licensee Event Report

Hatch

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		Reporting criterion
05000366/LER-2012-001, 0 for Edwin I. Hatch Nuclear Plant, 2B Standby Gas Treatment Filter Train Found Operating at Higher Flow than Allowed by Technical Specification	0 for Edwin I. Hatch Nuclear Plant, 2B Standby Gas Treatment Filter Train Found Operating at Higher Flow than Allowed by Technical Specification	10 CFR 50.73(a)(2)(iv)(A), System Actuation 10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown 10 CFR 50.73(a)(2)(ix)(A), Prevented Safety Function in Multiple System 10 CFR 50.73(a)(2)(viii)(A)
05000321/LER-2012-001, Regarding Non-Compliance with Technical Specification 3.9.4 for Control Rod Position Indication During Shutdown	Regarding Non-Compliance with Technical Specification 3.9.4 for Control Rod Position Indication During Shutdown	10 CFR 50.73(a)(2)(iv)(A), System Actuation 10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown 10 CFR 50.73(a)(2)(ix)(A), Prevented Safety Function in Multiple System 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(i)(8) 10 CFR 50.73(a)(2)(v)(8) 10 CFR 50.73(a)(2)(ii)(8)
05000321/LER-2012-002, Regarding Failure of 1C EDG Output Breaker to Close Results in Condition Prohibited by Technical Specifications	Regarding Failure of 1C EDG Output Breaker to Close Results in Condition Prohibited by Technical Specifications	10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(v)(B), Loss of Safety Function - Remove Residual Heat 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown 10 CFR 50.73(a)(2)(ix)(A), Prevented Safety Function in Multiple System 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(viii)(B)
05000321/LER-2012-003, Leak in Reactor Pressure Boundary at Small Bore Piping Fillet Weld	Leak in Reactor Pressure Boundary at Small Bore Piping Fillet Weld	10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications
05000321/LER-2012-003, Regarding Leak in Reactor Pressure Boundary at Small Bore Piping Fillet Weld	Regarding Leak in Reactor Pressure Boundary at Small Bore Piping Fillet Weld	10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown 10 CFR 50.73(a)(2)(ix)(A), Prevented Safety Function in Multiple System 10 CFR 50.73(a)(2) 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(viii)(B) 10 CFR 50.73(a)(2)(i)(6)
05000321/LER-2012-004, Regarding Corrosion-Induced Bonding Results in Setpoint Drift for Multiple Safety Relief Valves	Regarding Corrosion-Induced Bonding Results in Setpoint Drift for Multiple Safety Relief Valves

05000321/LER-2012-004, Regarding Corrosion-Induced Bonding Results in Setpoint Drift for Multiple Safety Relief Valves

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