NYC 9/11 Public Portal Document
2.4 Passive Shaft/Duct Visual Inspection Form Page 1 of 1
Passive Shaft-Duct Identification:
Location: n Area Served:
I Surface Component
System Components Dust/ %ETC i; not
(NOTE: if component not present (NP), not found (NF) or inaccessible (1) please Debris Dust present
indicate in last column) Present? Present?
4 not
found
4
inaccessible
Outside air intake (if servicing supply air): Location:
Accessible for inspection? Y N (explain):
louvers, grates, screens or weather ca
Exhaust outlet/louver (if servicing exhaust air): Location:
Accessible for inspection? V_'/1 N (explain): 7 'v
louvers, rates, screens or weather ca n./
Supply air distribution (if servicing supply air):
Supply air outlet(s) Est. total qty No. locations inspected
Specify shaft substrate (circle): metal fibrous Blass lined metal masonry
fibrous class board flex-duct wood
Accessible fire dam ers Est. total No. locations ins ected
Pi es'mechanical equipment, etc. located in shaft P
r eturn air distribution (if servicing exhaust air):
L Exhaust air inlet(s) Est. total qty No. locations inspected t;,i
Specify shaft substrate (circle): metal fibrous glass lined metal masonry
fibrous glass board flex-duct wood
Accessible fire dampers Est. total gty No. locations inspected n, P
Pi es'ntechanical equipm ent, etc. located in shaft
Other (specify):
Other Information:
General impression (indicate recommendations for cleaning based on finding of WTC dust):
KEY: NP = not present; NF = not found; I = inaccessible; U = unknown I
NYC-WTC 000130432
OCR can misread numbers and units. Confirm readings against the page image before using them.