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At 0207 CST, on 02-14-08 the Plant Shift S … At 0207 CST, on 02-14-08 the Plant Shift Superintendent (PSS) was notified that an alarm was received in the C-333 Area Control Room for the C-333 Unit 5 Cell 8 UF6 Release Detection (PGLD) System. Operators responded to the local panel and verified the alarm was not due to a UF6 release, but local panel lights were flickering. Operators attempted to test the system and the system would not test fire. This PGLD System contains detectors that cover the C-333 Unit 5 Cell 8 cell housing roof and inter-cell housing and section 4 of the cell bypass housing. At the time of this alarm, C-333 Unit 5 Cell 8 and section 4 of the cell bypass were operating above atmospheric pressure. TSR 2.4.4.1 requires that at least the minimum number of detector heads in the cell housing roof, inter-cell housing, and section 4 of the cell bypass housing are operable during steady state operations above atmospheric pressure. With the Unit 5 Cell 8 PGLD System inoperable, none of the required 3 heads in the cell housing roof and inter-cell housing were operable and only two of the required 3 heads in the cell bypass housing were operable. This PGLD System was declared inoperable. TSR LCOs 2.4.4.1.B.1 and 2.4.4.1 .C.1 were entered and a continuous smoke watch was put in place within one hour. An investigation is ongoing to attempt to determine the cause of the failure. This event is being reported as a 24 hour event in accordance with 10CFR 76.120(c)(2)(i). This is an event in which equipment is disabled or fails to function as designed when: a.) the equipment is required by a TSR to prevent releases, prevent exposures to radiation and radioactive materials exceeding specified limits, mitigate the consequences of an accident, or restore this facility to a pre-established safe condition after an accident; b.) the equipment is required by a TSR to be available and operable and either should have been operating or should have operated on demand, and c.) no redundant equipment is available and operable to perform the required safety function.</br>The NRC Senior Resident Inspector has been notified of this event.Inspector has been notified of this event.
08:07:00, 14 February 2008 +
43,987 +
14:10:00, 14 February 2008 +
08:07:00, 14 February 2008 +
At 0207 CST, on 02-14-08 the Plant Shift S … At 0207 CST, on 02-14-08 the Plant Shift Superintendent (PSS) was notified that an alarm was received in the C-333 Area Control Room for the C-333 Unit 5 Cell 8 UF6 Release Detection (PGLD) System. Operators responded to the local panel and verified the alarm was not due to a UF6 release, but local panel lights were flickering. Operators attempted to test the system and the system would not test fire. This PGLD System contains detectors that cover the C-333 Unit 5 Cell 8 cell housing roof and inter-cell housing and section 4 of the cell bypass housing. At the time of this alarm, C-333 Unit 5 Cell 8 and section 4 of the cell bypass were operating above atmospheric pressure. TSR 2.4.4.1 requires that at least the minimum number of detector heads in the cell housing roof, inter-cell housing, and section 4 of the cell bypass housing are operable during steady state operations above atmospheric pressure. With the Unit 5 Cell 8 PGLD System inoperable, none of the required 3 heads in the cell housing roof and inter-cell housing were operable and only two of the required 3 heads in the cell bypass housing were operable. This PGLD System was declared inoperable. TSR LCOs 2.4.4.1.B.1 and 2.4.4.1 .C.1 were entered and a continuous smoke watch was put in place within one hour. An investigation is ongoing to attempt to determine the cause of the failure. This event is being reported as a 24 hour event in accordance with 10CFR 76.120(c)(2)(i). This is an event in which equipment is disabled or fails to function as designed when: a.) the equipment is required by a TSR to prevent releases, prevent exposures to radiation and radioactive materials exceeding specified limits, mitigate the consequences of an accident, or restore this facility to a pre-established safe condition after an accident; b.) the equipment is required by a TSR to be available and operable and either should have been operating or should have operated on demand, and c.) no redundant equipment is available and operable to perform the required safety function.</br>The NRC Senior Resident Inspector has been notified of this event.Inspector has been notified of this event.
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00:00:00, 14 February 2008 +
GDP-1 +
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
23:30:24, 24 November 2018 +
14:10:00, 14 February 2008 +
0.252 d (6.05 hours, 0.036 weeks, 0.00829 months) +
08:07:00, 14 February 2008 +
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