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CONDITION
C. Dewadation or loss of the
Building 985 exhaust
ventilation system
filtration capabilinr.
D. Differential pressure in the
Buiiding 991 exhaust
ventilation system plenum
is < 0.5 in. W.P. negative
with resDect to
atmospheric reference.
E. Differential pressure in
Room 170 is < 0.02 in.
w.g. negative with respect
to atmospheric reference.
F. Differential uressure
across the Building 991
exhaust ventilation system
plenum is > 4 in. w.g
negative.
REOTJIRED ACTiON
C. 1 SUSPEND OPERATIONS in
the AFFECTED AREQLS.
OR
C.2 Stop operation of Building 985
exhaust ventilation system
main exhaust fans.
D. 1 SUSPEND OPERATIONS in
the AFFECTED AWAS.
E. 1 SUSPEND OPERATIONS in
Rooms 134, 135. 147. and 170.
F,1 SUSPEND OPERATIOXS in
the AFFECTED AREAS.
4 hours.
2 hours.
I hours.
4 hours.
I hours.
A-45 Building 99 1 Complex FS AR
Appendix A