EEJaime
Electrical
- Jan 14, 2004
- 536
Gentlemen,
I have a peculiar condition at a new project site that I am trying to design. The Architects are driving me insane as usual. Additionally, we have a mechanical engineer from a competing firm and a code consultant that I feel is being overly conservative, (by definition I believe).
What I have is two 1500kW generator sets each sitting on a 1000 gallon diesel, skid mounted fuel tank. These units sit outdoors in a recessed enclosure which will essentially be a concrete tub 45' square.
In addition to this we have a condition where there will be a temporary passenger connector tunnel, (corridor), built about 30' above the generator yard to connect a new passenger terminal concourse with the existing airport terminal structure. This will be in place for a maximum of 14 months.
My reading of NFPA codes leads me to the conclusion that the design is well within applicable code requirements.
Namely NFPA 37, 6.3.3 "FUEL TANKS OUTDOORS(ABOVEGROUND OR UNDERGROUND) OR BENEATH A STRUCTURE. Fuel tanks located outside, either aboveground or underground, or beneath a structure, shall comply with provisions of NFPA 30, Flammable and Combustible Liquids Code."
And NFPA 31 INSTALLATION AND USE OF STATIONARY COMBUSTION ENGINES AND GAS TURBINES, 7.9.3 "A tank or tanks whose capacity exceeds 660 gallons shall be installed in accordance with all applicable requirements of NFPA 30, Flammable and Combustible Liquids Code."
And finally NFPA 30, 15.4-"Outdoor Storage Adjacent to a Building." as well as Tables 22.4.1.1(a) and T22.4.1.1(b) allow this installation as long as:
1) The adjacent building has a 2 hr rating
2) The adjacent building has no openings at grade or above grade that are within 10 ft horizontally of the storage.
3) The adjacent building wall has no openings directly above the storage.
4) The adjacent building has no openings below grade withing 50ft horizontally of the storage.
And from the tables for fuel quantities between 660 and 12000 gallons we need 5' "From Nearest side of any public way or from Narest Important building on the same property. This distance is then halved for a protected above ground tank.
I feel that we meet all requirements for this installation.
I hope I've provided sufficient information for some feedback.
Thank you and regards,
EEJaime
I have a peculiar condition at a new project site that I am trying to design. The Architects are driving me insane as usual. Additionally, we have a mechanical engineer from a competing firm and a code consultant that I feel is being overly conservative, (by definition I believe).
What I have is two 1500kW generator sets each sitting on a 1000 gallon diesel, skid mounted fuel tank. These units sit outdoors in a recessed enclosure which will essentially be a concrete tub 45' square.
In addition to this we have a condition where there will be a temporary passenger connector tunnel, (corridor), built about 30' above the generator yard to connect a new passenger terminal concourse with the existing airport terminal structure. This will be in place for a maximum of 14 months.
My reading of NFPA codes leads me to the conclusion that the design is well within applicable code requirements.
Namely NFPA 37, 6.3.3 "FUEL TANKS OUTDOORS(ABOVEGROUND OR UNDERGROUND) OR BENEATH A STRUCTURE. Fuel tanks located outside, either aboveground or underground, or beneath a structure, shall comply with provisions of NFPA 30, Flammable and Combustible Liquids Code."
And NFPA 31 INSTALLATION AND USE OF STATIONARY COMBUSTION ENGINES AND GAS TURBINES, 7.9.3 "A tank or tanks whose capacity exceeds 660 gallons shall be installed in accordance with all applicable requirements of NFPA 30, Flammable and Combustible Liquids Code."
And finally NFPA 30, 15.4-"Outdoor Storage Adjacent to a Building." as well as Tables 22.4.1.1(a) and T22.4.1.1(b) allow this installation as long as:
1) The adjacent building has a 2 hr rating
2) The adjacent building has no openings at grade or above grade that are within 10 ft horizontally of the storage.
3) The adjacent building wall has no openings directly above the storage.
4) The adjacent building has no openings below grade withing 50ft horizontally of the storage.
And from the tables for fuel quantities between 660 and 12000 gallons we need 5' "From Nearest side of any public way or from Narest Important building on the same property. This distance is then halved for a protected above ground tank.
I feel that we meet all requirements for this installation.
I hope I've provided sufficient information for some feedback.
Thank you and regards,
EEJaime