Exceptions: An anti-siphon valve or other siphon-breaking device shall not be required where either:
- An approved foot valve is used in the tank, or
- No. 6 fuel oil is used.
Exception: Piping for fuel-oil systems utilizing a transfer pump to equipment at levels above the lowest floor or to storage tanks at levels above the lowest floor in buildings shall comply with the requirements of Section 1305.9.5.
TABLE 1302.3a FUEL OIL PIPING
|MATERIAL||STANDARD (see Chapter 15)|
|Brass pipe||ASTM B 43|
|Copper or copper-alloy pipe||ASTM B 42; ASTM B 302|
|Copper or copper-alloy tubing |
(Type K, or L (PVC coated))
|ASTM B 75; ASTM B 88; |
ASTM B 280
|Labeled pipe||(See Section 1302.4)|
|Nonmetallic pipe||ASTM D 2996|
|Steel pipe||ASTM A 53M; ASTM A 106|
|Steel tubingb||ASTM A 254; ASTM A 539|
|a. Brass tubing, and copper tubing type M are not permitted.|
|b. Steel tubing shall only be permitted when installed by the equipment manufacturer in accordance with UL 2200 and UL labeled.|
Exception: Storage tanks in buildings that comply with all of the following conditions:
- The tank is located above ground on the lowest floor;
- The tank does not exceed 330 gallons (1250 L); and
- The tank is provided with a 3/4-inch (19.1 mm) opening for gravity discharge and a 1-inch (25 mm) opening in the bottom for cleaning and protection against corrosion.
TABLE 1305.7(1) VENT PIPING FOR UNDERGROUND TANKS
|TANK SIZE||MINIMUM VENT DIAMETER|
|660 gallons (2500 L) or less||11/4 inch (32 mm)|
|661 gallons (2505 L) to 3,000 gallons |
(11 355 L)
|11/2 inch (38 mm)|
|3,001 gallons (11 360 L) to 10,000 |
gallons (37 850 L)
|2 inch (51 mm)|
|10,001 gallons (37 855 L) to 20,000 |
gallons (75 700 L)
|21/2 inch (64 mm)|
|Larger than 20,000 gallons (75 700 L)||3 inch (76 mm)|
TABLE 1305.7(2) VENT PIPING FOR TANKS INSTALLED INSIDE BUILDINGS
|TANK SIZE||MINIMUM VENT DIAMETER|
|660 gallons (2500 L) or less||11/4 inch (32 mm)a|
|Larger than |
660 gallons (2500 L)
|Sized to prevent abnormal pressure |
in the tank during filling but not
smaller than the pipe size specified
in Table 1305.7(1)
- Liquid fuel normal vent pipes shall terminate outside of buildings in a nonhazardous location at a point not less than 2 feet (610 mm) measured vertically or horizontally from any building opening and not less than 2 feet (610 mm) nor more than 12 feet (3658 mm) above the fill pipe terminal.
- If the normal vent pipe terminal is not visible from the fill pipe terminal location, a 1-inch (25 mm) tell-tale line shall be connected to the tank and shall parallel the fill pipe and terminate at the fill pipe terminal with an unthreaded end. Such tell-tale lines shall be provided with a check valve set to prevent flow of surface water to the storage tank.
- Normal vent pipes shall terminate sufficiently above the ground to avoid being obstructed with snow or ice.
- Normal vent pipes from tanks containing heaters shall be extended to a location where oil vapors discharging from the normal vent will be readily diffused.
- The pressure in oil lines to oil-burning equipment located above the lowest floor of a building shall not be more than is required to circulate oil to and from the burners, and all parts of the oil system shall be capable of withstanding the maximum working pressure in that part of the system.
- A remote control shall be provided to stop the flow of oil to any burner wherever located, and to any oil-burning equipment located on levels above the lowest floor in buildings. Such control shall be located outside the entrance to the room in which the burner is located and as close to such entrance as practicable, except that when an outside location is impracticable, such control may be located immediately inside the room in which the burner is located, provided such location is accessible at all times. All such controls shall be permanently labeled: "REMOTE CONTROL FOR BURNER," or as appropriate to the oil-burning equipment. On storage tanks of 60 gallons (227 L) or less capacity used with manually operated equipment, such remote control may be installed in the supply lines between tank and burner.
- In systems where either steam or air is used for atomizing the oil, the oil and the atomizing supply shall be interlocked so that where the supply of either is interrupted, the supply of the other will be immediately cut off.
- Buildings of Type I,II, IIIA, IV or VA construction with a total limit of 15,000 gallons. The maximum size of each individual tank shall be 15,000 gallons (56 775 L) provided that all such tanks are located in a room or enclosure dedicated to oil storage that is separated from the rest of the building by fire-resistance-rated construction of at least 3 hours. Notwithstanding Section 1305.11.1, in such cases, the maximum total quantity in the building shall be limited to 15,000 gallons (56 775 L).
- Buildings of Type IIIB or VB construction with a total limit of 10,000 gallons. The maximum size of each individual tank shall be 10,000 gallons (37 850 L) provided that all such tanks are located in a room or enclosure dedicated to oil storage that is separated from the rest of the building by fire-resistance-rated construction of at least 3 hours. Notwithstanding Section 1305.11.1, in such cases, the maximum total quantity in the building shall be limited to 10,000 gallons (56 775 L).
- Buildings of any type construction with a total limit of 100,000 gallons. The maximum size of each individual tank shall be 25,000 gallons (94 625 L) provided that all such tanks are enclosed in a vault (i) with walls, floor, and top having a fire-resistance rating of not less than 3 hours, (ii) with such walls bonded to the floor, and (iii) with such top and walls of the vault independent of the building structure. An exterior building wall having a fire-resistance rating of not less than 3 hours shall be permitted to serve as a wall of the vault. The vault shall be located in a dedicated room or area of the building that is cut off vertically and horizontally from other areas and floors of the building by assemblies having a fire-resistance rating of not less than 2 hours. Where the aggregate fuel-oil storage on the lowest level of the building exceeds 50,000 gallons (189 250 L), such storage shall be protected with an alternative automatic fire-extinguishing system complying with this code and the New York City Fire Code.
Exception: Fuel-oil storage capacity in areas of special flood hazard and shaded X-Zones, as defined in Section G201.2 of Appendix G of the New York City Building Code, shall comply with Section G307.4 of Appendix G of the New York City Building Code.
- Containment. Fuel-oil tanks having a capacity of more than 660 gallons (2500 L) shall be provided with secondary containment intended to prevent any leakage of fuel oil from the tank from entering the environment. The capacity of the containment shall equal or exceed the capacity of the tank served.
- Burial. Regardless of capacity, fuel-oil tanks shall be buried with the top of the tank at least 2 feet (610 mm) below ground. Tanks shall be placed in firm soil and shall be surrounded by clean sand or well-tamped earth, free from ashes or other corrosive substance, and free from stones that will not pass a 1-inch (25 mm) mesh.
- Anchorage. When necessary to prevent floating, fuel-oil tanks, regardless of capacity, shall be securely anchored.
- Distance to foundations. Regardless of capacity, no fuel-oil tank shall be buried within 3 feet (914 mm) of any foundation wall or footing.
- Special limitations near subways. Regardless of capacity, no fuel-oil tank shall be placed within 20 feet (6096 mm) of the outside line of a subway wall. For the purpose of the foregoing requirement, a subway shall be deemed to include any subsurface railroad or rapid transit roadbed.
- Enclosure of room. Installation of tank(s) and enclosure of room shall comply with Section 1305.11.1.2.
- Fire-extinguishing system. Fire extinguishing systems shall comply with Section 1305.11.1.2.
- Ventilation. Rooms containing fuel-oil tanks which exceed 1375 gallons (5200 L) shall be ventilated to limit the concentration of vapors within the room at or below 25 percent of the Lower Flammable Limit (LFL) of the fuel oil being used.
- Containment. Fuel-oil tanks having a capacity of more than 660 gallons (2500 L) storage shall be provided with secondary containment intended to capture any leakage of fuel oil from the tank. The capacity of the containment shall equal or exceed the capacity of the tank served. For fuel storage, the capacity shall include the portion of the tank up to the height of the containment.
- Special limitations near subways. Regardless of capacity, fuel-oil tanks located within the outer lines of the subway, or within 20 feet (6096 mm) of the outside line of a subway shall be placed within a welded steel oil-tight pan of not less than No. 18 Gage metal suitably reinforced and of capacity to contain the contents of the tank. For the purpose of the foregoing requirement, a subway shall be deemed to include any subsurface railroad or rapid transit roadbed.
- Enclosure of room. Fuel-oil tanks and fuel-oil-burning equipment shall be located in a dedicated room or enclosure, having a fire-resistance rating of at least 2 hours. Rooftop tanks need not be enclosed provided that all exterior walls and roof surfaces within 10 feet (3048 mm) horizontally and 20 feet (6096 mm) vertically have a fire-resistance rating of at least 2 hours.
- Fire-extinguishing system. Rooms containing fuel-oil tanks and fuel-oil-burning equipment shall be equipped with an automatic sprinkler system in accordance with Section 903.3.1 of the New York City Building Code. To prevent overfilling of the containment barriers, sprinkler shut-offs shall be located on the outside of tank and generator rooms and prominently placarded for immediate control by the Fire Department.
- Smoke detection. Rooms containing fuel-oil tanks and fuel-oil-burning equipment shall be equipped with automatic smoke detection in accordance with Section 907 of the New York City Building Code, except that heat detectors may be utilized where, during normal operation, products of combustion are present in sufficient quantity to actuate a smoke detector.
- Ventilation. Rooms containing fuel-oil tanks shall be ventilated to limit the concentration of vapors within the room at or below 25 percent of the Lower Flammable Limit (LFL) of the fuel oil being used.
- Containment. Fuel-oil tanks, fuel-oil-burning equipment, and related equipment shall be provided with secondary containment area intended to capture any leakage of fuel oil. Floor drains shall be prohibited in containment areas. For tanks, the capacity of the containment area shall equal or exceed 2 times the capacity of the tank served. For fuel storage, the capacity shall include the portion of the tank up to the height of the containment. For fuel-oil-burning equipment and related equipment, the capacity of the containment area shall equal or exceed 1.5 times the fuel capacity of the equipment.
- Transfer pumps. Fuel-oil tanks shall be filled by means of a transfer pump supplied from a primary storage tank located on the lowest floor. A separate transfer pump and piping circuit shall be provided for each storage tank installed above the lowest floor. No intermediate pumping stations shall be provided between the storage tank and the transfer pump. Appropriate devices shall be provided for the automatic and manual starting and stopping of the transfer pumps so as to prevent the overflow of oil from these storage tanks.
- Indicators and alarms. Indicators and alarms shall be provided for fuel-oil tanks and rooms containing fuel-oil-burning equipment, including a level sensor for height and capacity of fuel oil, high and low levels, and leak detection. The float switch shall be provided within the containment areas and shall be arranged so as to sound an alarm and stop the transfer pump in case of failure of the tank or the control in the tank. These indicators shall be connected to a local audible alarm in the tank room and to a remote alarm located at a supervising station. The wiring shall comply with the New York City Electrical Code.
- Weekly testing. The operation of the float switch shall be tested at least once each week by the holder of the certificate of fitness as provided for in Sections 1301.10 and 1308.3.
- Containment. Regardless of capacity, each fuel-oil storage tank shall be protected by an embankment or dike. Such protection shall have a capacity at least 11/2 times the capacity of the tank so surrounded (including the portion of the tank up to the height of the containment) and shall be at least 4 feet (1219 mm) high, but in no case shall the protection be higher than one-quarter the height of the tank when the height of the tank exceeds 16 feet (4877 mm). Embankments or dikes shall be made of earthwork with clay core, of masonry, of reinforced concrete or of steel. Earth work embankments shall be firmly and compactly built of good earth free from stones, vegetable matter, or other similar material, and shall have a flat section of at least 3 feet (914 mm) at the top and a slope of at least 11/2 (457 mm) rise to 2 feet (610 mm) of run on all sides. Concrete, masonry or steel dikes shall be designed so as to contain safely all of the oil in the tank so surrounded. Embankments or dikes shall be continuous and unpierced, and the outside toe shall be located at least 5 feet (1524 mm) inside of the property line, and no less than 5 feet (1524 mm) from a driveway or parking area.
- Distances to buildings, lot lines and other tanks. Storage tanks of a capacity greater than 330 gallons (1250 L) shall be not less than 11/4 tank diameters and in no case less than 10 feet (3048 mm) from the tax lot line, the nearest building or adjacent tank. However, in no case shall the clearance between individual tanks and the tax lot line be less than the distance fixed by the following formula:
|M.C.||=||Minimum clearance from nearest surface of tank to tax lot line, in feet.|
|G||=||Capacity of tank, in gallons.|
3. Means of egress. Tanks shall be located so as not to obstruct or interfere with any means of egress.
Exception: Such above-ground vertical tanks that are outside of buildings shall comply with Sections 1305.14.1 and 1305.14.5.
- Tanks 36 inches (914 mm) in diameter or less shall have at least a 1/4-inch (6.4 mm) shell and 1/4-inch (6.4 mm) heads.
- Tanks 37 inches (940 mm) to 72 inches (1829 mm) in diameter shall have at least a 1/4-inch (6.4 mm) shell and 5/16-inch (7.9 mm) heads.
- Tanks 73 inches (1854 mm) to 120 inches (3048 mm) in diameter shall have at least a 5/16-inch (7.9 mm) shell and 3/8-inch (9.5 mm) heads.
- Tanks over 120 inches (3048 mm) in diameter shall be of at least 3/8-inch (9.5 mm) steel and shall be stiffened by angle rings or equivalent members so as to retain their cylindrical form.
- Such vertical above-ground cylindrical tanks outside of buildings shall comply with Sections 1305.14.1 and 1305.14.5.
- Such underground tanks need comply only with Section 1305.14.1.
- Storage containers of 6 gallons (23 L) or less used with burners or oil-burning heaters need only be designed so as to withstand a hydrostatic pressure test of at least 5 psi (34 kPa) without permanent deformation, rupture, or leakage, and shall be approved. Such containers shall be installed with rigid metal fasteners for wall, floor, or stand-type installations, and shall be protected against mechanical damage. Portable storage containers of 6 gallons (23 L) or less may be filled by a pump mounted on a storage tank, provided that the pump is approved.
1305.14.5 Additional Construction Standards for Vertical Above-Ground Cylindrical Tanks Outside of Buildings Exceeding 6 Gallons (23 L)
|t||=||Thickness of shell plate in inches.|
|P||=||Head pressure at bottom of ring under consideration in psi.|
|R||=||Radius of shell, in inches.|
|F||=||Factor of safety (taken as 5).|
|T||=||Tensile strength of plate, in psi, as verified by mill test certificate.|
|E||=||Efficiency of vertical joint in ring under consideration. E shall in no case be taken greater than 1.00.|