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Letter, Licensee Event Report (LER)  and Licensee Event Report

10 CFR 50.73 +, 10 CFR 50.73#a2vD +, 10 CFR 50.72#b3vD +  and 10 CFR 21.2#c +

05000278  +  and 00278  +

Pat Navin +  and Exelon +

05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +, 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +  and 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter +

0.0244 d (0.586 hours, 0.00349 weeks, 8.02855e-4 months)  +, 0.00729 d (0.175 hours, 0.00104 weeks, 2.39715e-4 months)  +, 0.0152 d (0.365 hours, 0.00217 weeks, 5.003575e-4 months)  +, 1.62037e-4 d (0.00389 hours, 2.314815e-5 weeks, 5.327e-6 months)  +  and 0.0255 d (0.611 hours, 0.00364 weeks, 8.371e-4 months)  +

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)(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)(x) +, 10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded +, 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) +  and 10 CFR 50.73(a)(2)(viii)(B) +

Pennsylvania +, Maryland +  and Washington +

High Pressure Coolant Injection +, Reactor Core Isolation Cooling +, Core Spray +, Automatic Depressurization System +, Emergency Core Cooling System +  and Low Pressure Coolant Injection +

Document Control Desk +  and Office of Nuclear Reactor Regulation +

https://lersearch.inl.gov/Index.aspx?Page=PDFView?Doc::2782015001R00.pdf  +  and http://pbadupws.nrc.gov/docs/ML1605/ML16057A011.pdf  +