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On February 18, 2015, while the plant was … On February 18, 2015, while the plant was operating at approximately 98% power, it was discovered that four local leak rate procedure erroneously required the closure of the respective motor-operated valve in the packing leak-off line for the outboard main steam isolation valve (MSIV) being tested, when the proper test configuration would require the valve to be open. The net effect of the error was to partially negate the effectiveness of a surveillance test required by Technical Specifications. This condition had existed since the procedures were revised in 1992 to add valve lineup checklists. The incorrect valve position for the subject test procedures was caused by lack of attention to detail when the procedures were developed. An assessment of the effects of the procedure error was conducted, and reasonable assurance was established that the safety function of the outboard MSIVs was not compromised by this condition. The procedures were corrected, and the tests were successfully conducted in the recent refueling outage. This condition is being reported in accordance with 10CFR50.73(a)(2)(i)(B) as operations prohibited by Technical Specifications.ns prohibited by Technical Specifications. +
February 18, 2015 +
On February 18, 2015, while the plant was … On February 18, 2015, while the plant was operating at approximately 98% power, it was discovered that four local leak rate procedure erroneously required the closure of the respective motor-operated valve in the packing leak-off line for the outboard main steam isolation valve (MSIV) being tested, when the proper test configuration would require the valve to be open. The net effect of the error was to partially negate the effectiveness of a surveillance test required by Technical Specifications. This condition had existed since the procedures were revised in 1992 to add valve lineup checklists. The incorrect valve position for the subject test procedures was caused by lack of attention to detail when the procedures were developed. An assessment of the effects of the procedure error was conducted, and reasonable assurance was established that the safety function of the outboard MSIVs was not compromised by this condition. The procedures were corrected, and the tests were successfully conducted in the recent refueling outage. This condition is being reported in accordance with 10CFR50.73(a)(2)(i)(B) as operations prohibited by Technical Specifications.ns prohibited by Technical Specifications. +
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05000458/LER-2015-001, Operations Prohibited by Technical Specifications Due to Deficient Local Leak Rate Test Procedures Containing Erroneous Valve Alignments +, 05000458/LER-2015-001, Operations Prohibited by Technical Specifications Due to Deficient Local Leak Rate Test Procedures Containing Erroneous Valve Alignments +, 05000458/LER-2015-001, Operations Prohibited by Technical Specifications Due to Deficient Local Leak Rate Test Procedures Containing Erroneous Valve Alignments +, 05000458/LER-2015-001, Operations Prohibited by Technical Specifications Due to Deficient Local Leak Rate Test Procedures Containing Erroneous Valve Alignments + and 05000458/LER-2015-001, Operations Prohibited by Technical Specifications Due to Deficient Local Leak Rate Test Procedures Containing Erroneous Valve Alignments +
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00:47:10, 17 November 2016 +
April 16, 2015 +
February 18, 2015 +
Operations Prohibited by Technical Specifications Due to Deficient Local Leak Rate Test Procedures Containing Erroneous Valve Alignments +
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