closure project manager - Document Request - U.S. Department of ...

BASES
REQUIRED The four-hour COMPLETION TIME associated with the SUSPEND
ACTION B.2 OPERATIONS REQUIRED ACTION provides adequate time for facility
(continued) management to inform the workers of the required termination and for the workers
to safely terminate the work. The termination of these activities does not negate
any fire watch requirements associated with the original activities. That is, if the
hot work pexmit stipulated a continuous fire watch for eighthours to monitor
equipment while it is cooling, the termination of the activity would not relax the
requirement for a continuous fire watch.
REQUIRED
ACTION C. 1
Revision 1
Sc-nfernber 1939
The four-hour COMPLETION TIME does not result in undue risk due to the low
initiation frequency of a fire, particularly in waste container storage areas, and due
to the already continuous monitoring of the activities by the workers involved in
the dvities. However, the REQUfRED ACTION to SUSPEND OPERATIONS
in AFFECTED AREAS is expected to be implemented as soon as reasonably
achievable, even if this is significantly less than the assigned COMPLETION
TIME. The four-hour COMPLETION TIME should not be used for operational
convenience.
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LCO 3.1 will not be met if the Flow Alarm Transmittal System is not
OPEWLE for Riser System A. The absence of the fire detection and alarm
function in the BUILDING 991 COMPLEX waste container storage areas covered
by Riser SystemA and the Office Area reduces the likelihood that the Fire
Department will be notified that a fire and/or actuation of the Automatic Sprinkler
System has occurred. The Fire Department serves a DEFENSE-IN-DEPTH
protection function in mitigating fires in the facility. The Fire Department also
serves to mitigate facility flooding and water damage due to actuation of the
Automatic Sprinkler System. Without the fire detection and alarm function, the
likelihood of Fire Department response is decreased. The facility will maintain
the Same level of DEFENSE-IN-DEPTH mitigation protection if there is a
capability to notify the Fire Department of small fires prior to their becoming
large fires.
If the Flow Alarm Transmittal System is not OPERABLE for Riser System A, the
facility shall comply with Site requirements for establishing a fire watch in the
AFFECTED AREAS within four-hours. If a fire watch is established, the fire
watch partly replaces the fire detection and alarm functions of the Flow Alarm
Transmittal Systems with a fire watch individual capable of providing the
functions during watch tours. The fire watch individual is expected to notifji the
Fire Department in the event of a fire, either via fire phones or an alternative
method if the fire phones are unavailable. The Fire Department then provides a
DEFENSE-IN-DEPTH fire suppression hction in addition to the Automatic
Sprinkler System.
A-34
Building 99 1 CompIeex FSAR
Appendix A
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