NYC 9/11 Public Portal Document
2.4 - Passive Shaft/Duct Visual Inspection Form Page 1 of I
Passive ShatvUuct laenttttcation: +L
Location: (, Area Served:
Su Component
System Components Dustt Ce 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 cap
Exhaust outlet/louver (if servicing exhaust air): Location: 1L &
Accessible for inspection? Y V N (explain): ~/ /!✓
louvers, rates, screens or weather ca C ^J
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 glass board flex-duct wood
Accessible fire dam ers Est. total No. locations ins ected
Pi es/mechanical equipment, etc. located in shaft P
Return air distribution (if servicing exhaust air):
Exhaust air inlet(s) Est. total qty S No. locations inspected I
Specify shaft substrate (circle): metal fibrous glass lined metal masonry N
fibrous glass board flex-duct wood !
Accessible fire dam ers Est. total No. locations ins ected fj p
Pi es/mechanical equipment, etc. located in shaft
P
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
1
NYC-WTC 000133635
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