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

10 CFR 50.73 +, 10 CFR 50.46 +, 10 CFR 50.73#a2ivA +, 10 CFR 50.72#b2i +  and 10 CFR 50.72#a1i +

05000454  +, 05000455  +, 00454  +  and 00455  +

Tulon T +  and Exelon +

05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +, 05000454/LER-2012-001, Regarding Unit 2 Loss of Normal Offsite Power and Reactor Trip and Unit 1 Loss of Normal Offsite Power Due to Failure of System Auxiliary Transformer Inverted Insulators +...

0.0116 d (0.279 hours, 0.00166 weeks, 3.82022e-4 months)  +, 8.333333e-4 d (0.02 hours, 1.190476e-4 weeks, 2.7396e-5 months)  +, 1.388889e-4 d (0.00333 hours, 1.984127e-5 weeks, 4.566e-6 months)  +, 4.166667e-4 d (0.01 hours, 5.952381e-5 weeks, 1.3698e-5 months)  +, 0.0127 d (0.306 hours, 0.00182 weeks, 4.1855e-4 months)  +, 0.0135 d (0.324 hours, 0.00193 weeks, 4.44424e-4 months)  +, 0.00264 d (0.0633 hours, 3.769841e-4 weeks, 8.6754e-5 months)  +, 0.0228 d (0.546 hours, 0.00325 weeks, 7.48063e-4 months)  +, 3.935185e-4 d (0.00944 hours, 5.621693e-5 weeks, 1.2937e-5 months)  +, 0.0231 d (0.556 hours, 0.00331 weeks, 7.61e-4 months)  +, 0.02 d (0.481 hours, 0.00286 weeks, 6.58265e-4 months)  +, 0.0249 d (0.598 hours, 0.00356 weeks, 8.19597e-4 months)  +, 0.021 d (0.505 hours, 0.003 weeks, 6.913685e-4 months)  +, 2.893519e-4 d (0.00694 hours, 4.133598e-5 weeks, 9.5125e-6 months)  +, 0.0243 d (0.583 hours, 0.00347 weeks, 7.9905e-4 months)  +, 2.314815e-4 d (0.00556 hours, 3.306878e-5 weeks, 7.61e-6 months)  +, 0.0209 d (0.501 hours, 0.00298 weeks, 6.860415e-4 months)  +  and 0.0246 d (0.589 hours, 0.00351 weeks, 8.07421e-4 months)  +

05000454/LER-1996-007 +  and 05000455/LER-2008-001, Re Emergency Diesel Generators and Auxiliary Feedwater Pump Automatic Start Resulting from a Loss of Offsite Power Due to a Failed Insulator Causing a Differential Phase Overcurrent +

NRC Form 366, Licensee Event Report +  and NRC Form 300A +

4kV +, 4.16kV +  and 345kV +

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) +, 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) +  and 10 CFR 50.73(a)(2)(viii)(8) +

Byron +  and NPF-66 +

Washington +  and Ohio +

Steam Generator +, Reactor Coolant System +, Emergency Diesel Generator +, Auxiliary Feedwater +, Residual Heat Removal +  and Emergency Core Cooling System +

TS-3.0.3 +, TS-3.8.1 +  and TS-3.8.9 +

Office of Nuclear Reactor Regulation +  and Document Control Desk +

Safe Shutdown +, Open Phase Condition +, Loss of Offsite Power +  and Offsite Circuit +

https://lersearch.inl.gov/Index.aspx?Page=PDFView?Doc::4542012001R00.pdf  +  and http://pbadupws.nrc.gov/docs/ML1209/ML12090A492.pdf  +