NYC 9/11 Public Portal Document
2.2 Mechanical Exhaust System ` isual Inspection Form Page I of I
Mechanical Exhaust System Identification:
Location: h Area Served:
Associated mechanical room: clean Y N dry Y stored chemicals'refuse
N Y N
Surface Component
System Components S
Dust! WTC E not
(COTE: if component not present (NP), not found (NF) or inaccessible (I) please Debris Dust present
Present? Present?
indicate in last column] 4 not
found
Inaccessible
Exhaust air outlet: Location:
Accessible for inspection? Y ✓ N (explain):
I
louvi'ls, grates andor screens N
outside air duct
outside air dam er(s)
Exhaust fan unit:
blower assembly Incl. blower wheel, housing, air vanes, in-line noise v
attenuators
_ blower housing acoustical linin_e
vibration collars
Exhaust air distribution:
Exhaust air ducts Est total In ft LIO No. locations
inspected
Spec if.v type (circle): seta! fibrous class lined metal masonry fibrous_£l2ss board ~l N
flex-duct 1
Accessible in-line fire dampers Est. total qty No. locations ins ected 1J
Accessible turning vanes Es:. total a No. locations inspected I
Exhaust air grilles Est. total ty No. locations ins ected i
Other (specify):
Other Information:
General impression (indicate recommendations for cleaning based on finding of WNTC dust):
KEY: NP = not resent; NF = not found; I = inaccessible; U _ unknown -__
NYC-WTC 000135933
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