NYC 9/11 Public Portal Document
7 7 A4pchnnical Exhaust System Visual Inspection Form Pace I of l
Mechanical Exhaust System Identification: '
Location: O Area Served:
L c-
Associated mechanical room: clean Y N dry Y stored chemicals!refuse
N Y N
Surface Component
System Components Dusts WTC i not
[NOTE:.if component•ttbt present (NP), not found (NF) or inaccessible (I) please Debris Dust present
column] Present? Present? not
indicate in last
found
inaccessible
Exhaust air outlet: Lo tion:
Accessible for inspection? Y 7N (explain):
L ~`
iouvk s, grates and/or screens NA
outside air duct
outside air damper(s) aJ
Exhaust an unit:
blower assembly incl. blower wheel, housing, air vanes, in-line noise
attenuators
blower housing acoustical lining Nn
vibration collars N17
Exhaust air distribution:
Exhaust air ducts Est total In ft SU No. locations
inspected
Specify type (circle): etal fibrous Blass lined metal masonry fibrous glass board
flex-duct wood
Accessible in-line fire dampers Est. total gty No. locations inspected 0
Accessible turning vanes Est. total gty No. location=_ inspected ~Jn
Exhaust air grilles Est. total No. locations inspected 0 2
Other (specify):
Other Information:
General impression (indicate recommendations for cleaning based on finding of \\'TC dust):
KEY: NP = not present; NF = not found; I = inaccessible; U = unknown
NYC-WTC 000133960
OCR can misread numbers and units. Confirm readings against the page image before using them.