NYC 9/11 Public Portal Document
2'4 Passive Shaft/Duct Visual Inspection Form Page 1 of I
Passive Shaft/Duct Identification:
Location: Area Served:
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
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: df
Accessible for inspection? Y/ N (explain): y Aj
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 glass lined metal masonry
fibrous glass board flex-duct wood
Accessible fire dam ers Est. total No. locations ins ected
Pi es/mechanical equipment, etc. located in shaft P
eturn air distribution (if servicing exhaust air):
Exhaust air inlet(s) Est. total qty No. locations inspected
Specify shaft substrate (circle): meta fibrous glass lined metal masonry y
fibrous glass board flex-duct wood r
Accessible fire dampers Est. total qty No. locations inspected /V
Pi es/mechanical equipment, etc. located in shaft
Other (specify):
Other Information:
General impression (indicate recommendations for cleaning based on finding of «'TC dust):
'I
C?:Y: NP = not present; NF = not found; I = inaccessible; U = unknown
NYC-WTC 000133805
OCR can misread numbers and units. Confirm readings against the page image before using them.