Plan Review Comments for 7 WTC, April 1998

NYC 9/11 Public Portal Document

r.wo iTidJia^emenl hinal $ubm(UaI 6 M-4.01 • Please correct the cooling loads' typograp deal error for AC-I thru 3. * Complete ventilation index. » Will the motor for the exhaust fan EF.S to be explosion proof? 7 Section Paragraph 1.4: Identify shut off vaJvcs VI ihr 14 on the drawinss. W^e 15110 the butterfly and check valves arc being used?} 8 Section Paragraph 1,4: The abbreviation of fusible linirdampcrs (FLD) do not 15120 correlate with drawings (ALP).__________________ 9 Section • Verify paragraph 1.1 item F. ' 15150 » Edit paragraph 1.2 item A. .

Fire prottetion 1 FPl.Ol Please verify the need to provide fire protcctioi i for the Gal Fuel Oil >ir Tank in accordance withNYS code, Subchaptcy B> Part 1002,7. _________ 2 FP2.07 Verify the need to provide thermal detectors in [the emergency diesel ~ generatora room to close off the Fresh Air Intake and exhaust in case of fire. 3 FP3J23 1. Is there a need"for a' preaetJon sprinldcr system for the A/V room? ~ 2. Verify the need to provide sprinklers ik the electrical closet adjacent to elevator shaft PE-18 and stairway. This i oom contains a 112.5KVA trans former. 3. Verify the distances between sprinklers in tl e Mechanical Room and the watch command areas. 4, Verify fte need of the inspectors test conntt: tioa at the end of the sprinkler system. 5. Show the drain lines for the preaction systco^._______ _______ ■ ■ 4 What measure of fire'prot^og is provided for &c radio room on the roof?

_______________________ PLUMBING______________________ 1 P2.07& What provision Is made to minimize disruption o tenants when the cold P3.23 wajd riser will be installed or when the drain tin ts will be run below their su:q>eoded ceilings. ____________ 2 P3.23 Indicate the location of the backfiow preventgr fijr the two cooling towers. • J Section Where do you use a submersible pump? If that h the sump pump for the 15445 tank room what size reservoir is requhed.

_________________ ______ Electrical _____________________ 1 General • Indicate the motor horsepower for each moto? symbol, • Are meters required? • Complete the riser diagram: indicate the loads being served from each panel and the size of rhe breakers. • Indicate the transformers' type of connection a nd voltages as well as their primary switches and fuses, • Can the oil fill pump, the water tank fill pump and the exhaust fan EF-5 on the 1st floor, be activated from the dual do ^ric power supply. • Show the automatic power transfer distributioj! to the existing pneumatics controls and to the Air Handling u tit serving the 23rd floor. ♦ Show circuit breakers panel schedule.

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