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3.2 LIMITING CONDITION FOR OPERATEON: BUILDIKG 992 COMPLEX
FELTERED EXHAUST V-ENTlLATION SYSTEMS
LCO: The BUILDING 991 &OMPLEX Filtered Exhaust Ventilation Systems
Shall Be OPERABLE, With The Followina:
CONDITION
A. Loss of off-site power to
the BUILDING 99 1
COMPLEX exhaust
ventilation svstems
R. Degradation or loss of the
Building 99 1 exhaust
ventilation svstem
+%ration capabilin..
I. The High Efficiency Particulate Air (HEPA) filter stage in the Buildino 99 1
exhaust ventilation system plenum shall have an efficiency 2 99.9%
2. At least one HFPA fifter staqe in the Building 985 exhaust ventilation
system shall have an efficiency 299.904. if the svstem is intended to be
used.
3. The Building991 exhaust ventilation system plenum shall be at a
differential pressure 2 0 5 in. water 5aug.e (w E.) negative with respect to
atmospheric reference and shdl have a differential pressure across the
plenum 5 4 in. w .~. negative.
4. Room 170 shall be at a differential pressure 2 0.02 in. ~ 7 . g negative with
respect to atmospheric reference when dock doors are closed.
APPLICABILIIY: '4% all times in the BL.DING991 COMPLEX interior container
stora,oe:'staeini! areas other than Room 166. Differential pressure
requirements are not applicable for normal differential pressure
fluctuations (2 5 minutes in duration). Room 170 differential pressure
requirements are not applicable during receipt and shipment operations
in Room 170.
REOWRED ACTIONS:
Revision 1
Sen?ernher 1999
The SUSPEND OPER4TIONS REOL!IRED ACTTOW included in
LCO 3.2 do not include suspension of operations involving movement
of TvDe B shipping containers or Pipe Overpack Containers iPOCs) and
do not include transfer of any containers staqed for shiDment in
Room I70 to a transpon vehicie at the Room 170 dock.
REOURED ACTION
A. 1 SUSPEND OPER4TIONS in
the AFFECTED -AREAS.
B. I SUSPEND OPERATTONS in
the AFFECTED .&REAS.
4 hours.
-- 4 hours.
A-44 Building 99 1 Complex FS.4R
Appendix A