Zitat:
Zitat von weltzufluss
Das ist ja mal was! Wo ihm Gebäude waren eigentlich die Brände? Und wodurch/durchwas wurden diese dort ausgelöst?
Dann wäre noch zu klären, wo sich denn die Dieseltanks und Transformatoren befunden haben.
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Table 1–2. Emergency power systems in WTC 7.
Salomon Smith Barney
(SSB) System
Base Building System Mayor's OEM System
Fuel Storage Tank Two 12,000 gal tanks Two 6,000 gal tanks Single 6,000 gal tank
Capacities
1st floor
Tank Locations Below the loading dock Below the loading dock
Two on 5th floor Nine on the 5th floor Three on the 7th floor
Locations of Generator(s)
Nonea
Single 275 gal tank on the Single 275 gal day tank
Day Tanks and Locations
5th floor on the 7th floor
Two, on the 1st floor; Two, on the 1st floor,
Day Tank Pump Two circulating pumps on
1st floor, 70 gal/min
Locations and Capacities 4.4 gal/min 12 gal/min
Ambassador (U.S. Secret Generator and 50 gal day
tank on 9th floor; two
Service) Modification
pumps on the 1st floor,
2.4 gal/min
American Express Generator and 275 gal day
tank on 8th floor; two
Modification
pumps on the 1st floor,
2.8 gal/min
The NYCBC had a limit of one day tank per floor. Since there was a day tank on the 5th floor for the base generators, the SSB
system used a pressurized fuel distribution system, in which pumps continuously circulated fuel whenever the generators were
running. There was enough fuel (35 gal) in the valve rig and piping on the 5th floor to start the diesel engines, which, in turn,
would supply power to operate the circulating pumps.
Figure 1–10 depicts the locations of the electrical generators, the day tanks, and the fuel lines that
connected them to the below-ground fuel tanks.
The base building tanks were full on September 11, 2001. Several months following the attacks on the
WTC, a contractor recovered an estimated 23,000 gal of fuel from these tanks. NIST estimated that
approximately 1000 gal ± 1000 gal was unaccounted. The fate of the fuel in the three day tanks is
unknown, so NIST assumed they were full on September 11, 2001.
The fate of the fuel in the two tanks for the SSB system was also unknown. Thus, NIST assumed that all
of the fuel would have been available to feed fires either at ground level or on the 5th floor.
The NYCBC had a limit of one day tank per floor. Since there was a day tank on the 5th floor for the base generators, the SSB
system used a pressurized fuel distribution system, in which pumps continuously circulated fuel whenever the generators were
running. There was enough fuel (35 gal) in the valve rig and piping on the 5th floor to start the diesel engines, which, in turn,
would supply power to operate the circulating pumps.
Figure 1–10 depicts the locations of the electrical generators, the day tanks, and the fuel lines that
connected them to the below-ground fuel tanks.
The base building tanks were full on September 11, 2001. Several months following the attacks on the
WTC, a contractor recovered an estimated 23,000 gal of fuel from these tanks. NIST estimated that
approximately 1000 gal ± 1000 gal was unaccounted. The fate of the fuel in the three day tanks is
unknown, so NIST assumed they were full on September 11, 2001.
The NYCBC had a limit of one day tank per floor. Since there was a day tank on the 5th floor for the base generators, the SSB
system used a pressurized fuel distribution system, in which pumps continuously circulated fuel whenever the generators were
running. There was enough fuel (35 gal) in the valve rig and piping on the 5th floor to start the diesel engines, which, in turn,
would supply power to operate the circulating pumps.
Figure 1–10 depicts the locations of the electrical generators, the day tanks, and the fuel lines that
connected them to the below-ground fuel tanks.
The base building tanks were full on September 11, 2001. Several months following the attacks on the
WTC, a contractor recovered an estimated 23,000 gal of fuel from these tanks. NIST estimated that
approximately 1000 gal ± 1000 gal was unaccounted. The fate of the fuel in the three day tanks is
unknown, so NIST assumed they were full on September 11, 2001.
The fate of the fuel in the two tanks for the SSB system was also unknown. Thus, NIST assumed that all
of the fuel would have been available to feed fires either at ground level or on the 5th floor.
No trace of the Mayor’s OEM system tank or fuel was found. Since the pumps used to fill the day tank
on the 7th floor would only have run when the low fuel switch came on, NIST assumed that all the fuel
was available. This tank was enclosed in 4 h fire rated construction and was provided with a total
flooding fire suppression system.
Graphik zu den Tanks und Aggregaten siehe Seite 50 NIST-Report WTC 7
Beschreibung der Brandherde ab Seite 54