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At 1534 on 10/25/11 Site Engineering and L … At 1534 on 10/25/11 Site Engineering and Licensing reported the following to the Operations Department:</br>The following deficiency was identified during reviews for NFPA 805 Transition: Cable 1B11 (#12 awg - Fire Area Route 16, 17) from the shunt in the 250 VDC Battery Board 1 (0-BDDD-280-0001) compartment #1, to the control room ammeter 1-EI-57-38 mounted on Control Room Panel 1-9-8, is not fused or otherwise protected against an electrical fault. The 250 VDC Battery 1 is an un-grounded DC system. However, in a scenario where the 250 VDC Battery Board system negative becomes grounded at the same time the ammeter cable 1B11 has a fault to ground, the cable may not be protected and the cable could auto-ignite anywhere along the cables length from the ground fault location back to the battery source. For example, in a Fire Area 16 (Control Bay) scenario, these ground faults could result in a fire being spread from Fire Area 16 to Fire Area 17 (Battery Board 1). Fuses should be added to protect these cable conductors.</br>A similar condition exists for the remote ammeters on Unit Battery Board 2 (Cable 2B11 - Fire Area Route 16, 18), Unit Battery Board 3 (Cable 3B11 - Fire Area Route 16, 19), Unit Battery Board 4 (Cable 2B4018 - Fire Area Route 16, 26), Unit Battery Board 5 (Cable 1B383 - Fire Area Route 16, 26), and Unit Battery Board 6 (Cable 3B336 - Fire Area Route 16, 26).</br>This condition is reportable as an 8 hour notification to the NRC IAW 10CFR 50.72(b)(3)(ii)(B), 'Any event or condition that results in the nuclear power plant being in an unanalyzed condition that significantly degrades plant safety.'</br>This is also reportable as 60 day written report IAW 10CFR 50.73(a)(2)(ii)(B).</br>Fire watch compensatory measures are in place for the Fire Areas of concern. Ref. FPIP#09-1920</br>The NRC resident has been notified of this event.</br>This event was entered into the licensee's Corrective Action Program as PER# 452185. Corrective Action Program as PER# 452185. +
20:34:00, 25 October 2011 +
47,374 +
23:49:00, 25 October 2011 +
20:34:00, 25 October 2011 +
At 1534 on 10/25/11 Site Engineering and L … At 1534 on 10/25/11 Site Engineering and Licensing reported the following to the Operations Department:</br>The following deficiency was identified during reviews for NFPA 805 Transition: Cable 1B11 (#12 awg - Fire Area Route 16, 17) from the shunt in the 250 VDC Battery Board 1 (0-BDDD-280-0001) compartment #1, to the control room ammeter 1-EI-57-38 mounted on Control Room Panel 1-9-8, is not fused or otherwise protected against an electrical fault. The 250 VDC Battery 1 is an un-grounded DC system. However, in a scenario where the 250 VDC Battery Board system negative becomes grounded at the same time the ammeter cable 1B11 has a fault to ground, the cable may not be protected and the cable could auto-ignite anywhere along the cables length from the ground fault location back to the battery source. For example, in a Fire Area 16 (Control Bay) scenario, these ground faults could result in a fire being spread from Fire Area 16 to Fire Area 17 (Battery Board 1). Fuses should be added to protect these cable conductors.</br>A similar condition exists for the remote ammeters on Unit Battery Board 2 (Cable 2B11 - Fire Area Route 16, 18), Unit Battery Board 3 (Cable 3B11 - Fire Area Route 16, 19), Unit Battery Board 4 (Cable 2B4018 - Fire Area Route 16, 26), Unit Battery Board 5 (Cable 1B383 - Fire Area Route 16, 26), and Unit Battery Board 6 (Cable 3B336 - Fire Area Route 16, 26).</br>This condition is reportable as an 8 hour notification to the NRC IAW 10CFR 50.72(b)(3)(ii)(B), 'Any event or condition that results in the nuclear power plant being in an unanalyzed condition that significantly degrades plant safety.'</br>This is also reportable as 60 day written report IAW 10CFR 50.73(a)(2)(ii)(B).</br>Fire watch compensatory measures are in place for the Fire Areas of concern. Ref. FPIP#09-1920</br>The NRC resident has been notified of this event.</br>This event was entered into the licensee's Corrective Action Program as PER# 452185. Corrective Action Program as PER# 452185. +
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00:00:00, 26 October 2011 +
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