ENS 41341

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v t e ENS Event
10:45 Jan 17, 2005
Title	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Event Description	THIS IS NOT A NEW REPORT. This event report was originally withheld from public release under the NRC's policy for protecting sensitive unclassified information. The NRC has reevaluated this policy and is now making this event report available to the public with suitable redactions. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * LOSS OF FIRE MONITORING CAPABILITY The following information was received by the licensee via facsimile: I. Event Description On Monday, January 17, 2005, at approximately 0545, Security personnel manning the Central Alarm Station notified the Emergency Team captain [Redacted] that they were unable to detect any information from the facility fire protection system and the system operability was in question. Compensatory measures were put in place: the e-team patrolled the facility with a special emphasis placed on radiologically controlled areas. The system was restored at 0956. II. Evaluation of the Event 10 CFR 70.50(b)(2) states that the NRC must be notified of an event within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> followed by a 30-day written report if the following condition is met: An event in which equipment that meets all of the following three conditions is disabled or fails to function as designed: [10CFR70.50(b)(2)] (1) The equipment is required by regulation or license condition to prevent releases exceeding regulatory limits, to prevent exposures to radiation and radioactive material exceeding regulatory limits, or to mitigate the consequences of an accident; and (2) The equipment is required to be available and operable when it is disabled or fails to function; and (3) No redundant equipment is available and operable to perform the required safety function. License SNM-42, Chapter 1, Section 1.9.2 requires that: "Fire detectors be installed and maintained in controlled areas. These detectors will alarm in the continuously manned NPD security alarm station." The system malfunction in the Central Alarm Station prevented them from being continuously monitored. Evaluations have been performed to determine that the system is not an IROFS and that regulatory limits will not be exceeded by [DELETED]. While SARs 15.9, 15.10, and 15.11 currently list the smoke detectors as IROFS, an evaluation was performed in December, 2004 which determined that these systems were not required to be IROFS and they are in the process of being removed from the ISA Summary. The equipment was required to be available and operable when it failed to function. Also, redundant equipment was not available; however, compensatory measures were utilized. The emergency team was dispatched to patrol the facility and monitor for local alarms and system activations. Special emphasis was placed on controlled areas. Compensatory measures were in place within 15 minutes of notification of the system loss. III. Notification Requirements The event is reportable due to: Although the fire system monitoring is not an IROFS, it is required by the license to mitigate the consequences of an event in a controlled area. Also, it was required to be functional when the communications loss occurred and a redundant system was not available to perform the required safety function. Based on this, notification is required to the NRC within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> followed by a 30-day written report. IV. Status of Corrective Actions: The equipment has been returned to service and is functioning. An investigation of the event is underway. The licensee has notified the NRC Resident Inspector. * * UPDATE ON 05/11/08 BY H. Crouch * * * THIS IS NOT A NEW REPORT. This event report was originally withheld from public release under the NRC's policy for protecting sensitive unclassified information. The NRC has reevaluated this policy and is now making this event report available to the public with suitable redactions. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

ENS 41341 +/-
Where
Bwx Technologies Lynchburg, Virginia (NRC Region 2)
License number:	SNM-42
Reporting

10 CFR 70.50(b)(2)
Time - Person (Reporting Time:+5.52 h0.23 days <br />0.0329 weeks <br />0.00756 months <br />)
Opened:	Leah Morrell 16:16 Jan 17, 2005
NRC Officer:	Bill Huffman
Last Updated:	May 11, 2008
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v • d • e

v t e Emergency Notification System
BWX Technologies with 10 CFR 70.50(b)(2)
WEEKMONTHYEAR2005-01-17T10:45:00 [Table view]
[ENS list for BWX Technologies]

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