NYC 9/11 Public Portal Document
2.4. Passive Shaft/Duct Visual Inspection Form Page 1 of 1
Passive Shaft/Duct Identification:
Location:
Q.-'CkDF Area Served:
Surface Component
System Components Dust/ NNTC i; not
(NOTE: if component not present (NP), not found (NF) or inaccessible (I) please Debris Dust present
indicate in last column] Present? Present?
4 not
found
inaccessible
Outside air intake (if servicing supply air): Location:
Accessible for inspection? Y N (explain):
ran
wPatlpr
nr
crreenc
Drntec
louvers
Exhaust outlet/louver (if servicing exhaust air): Location: of
•• ''
Accessible for inspection? Y N (explain):
Y
louvers, rates, 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 glass lined metal masonry
fibrous glass board flex-duct wood
Accessible fire dam ers' Est. total No. locations ins ected
Pipes/mechanical equipment, etc. located in shaft P
Return air distribution (if servicing exhaust air):
Exhaust air inlet(s) Est. total qty L No. locations inspected
Specify shaft substrate (circle): metal fibrous glass lined metal masonry N
fibrous glass board flex-duct wood
Accessible fire dampers Est. total gty No. locations inspected #)
Pipes/mechanical equipment, etc. located in shaft Nf7
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 000133636
OCR can misread numbers and units. Confirm readings against the page image before using them.