NYC 9/11 Public Portal Document
2.4 Passive Shaft/Duct Visual Inspection Form Page 1 of 1
Passive Shaft/Duct Identification:
Location: Area Served:
~O
Surface Component
System Components Dust/ WTC not
[NOTE:-if component not present (NP), not found (NF) or inaccessible (I) please Debris Dust present
indicate in last column) Present? Present? not
found
4
inaccessible
Outside air intake (if servicing supply air): Location:
L
Accessible for inspection? Y N (explain):
louvers, grates, screens or weather cap j k F
Exhaust outlet/louver (if exhaust air): Location: out
;
serv7N,_(explain):
Accessible for inspection? Y /V
louvers, grates, screens or weather ca
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 Blass board flex-duct wood
Accessible fire dampers Est. total qty No. locations inspected
Pipes/mechanical equipment, etc. located in shaft P
r eturn air distribution (if servicing exhaust air):
L Exhaust air inlet(s) Est. total gty5 No. locations inspected_
Specify shaft substrate (circle): metal fibrous class lined metal masonry /v
i roux glass board flex-duct wood
Accessible fire dam ers Est. total No. locations ins ected AJ P
Pi es/mechanical e ui ment, etc. located in shaft NP
Other (specify):
Other Information:
General impression (indicate recommendations for cleaning based on finding of WTC dust):
i .E :': ` ? _rt present; NF = not found; I = inaccessible; U = unknown
NYC-WTC 000133803
OCR can misread numbers and units. Confirm readings against the page image before using them.