5706.2 Storage and Dispensing of Flammable and Combustible Liquids on Farms and Construction Sites
Permanent and temporary storage and dispensing of Class I and II liquids for private use on farms and rural areas and at construction sites, earth-moving projects, gravel pits or borrow pits shall be in accordance with Sections 5706.2.1 through 5706.2.8.1.
Exception: Storage and use of fuel oil and containers connected with oil-burning equipment regulated by Section 603 and the International Mechanical Code.
Metal containers used for storage of Class I or II liquids shall be in accordance with DOTn requirements or shall be of an approved design.
Discharge devices shall be of a type that do not develop an internal pressure on the container. Pumping devices or approved self-closing faucets used for dispensing liquids shall not leak and shall be well-maintained. Individual containers shall not be interconnected and shall be kept closed when not in use.
Containers stored outside of buildings shall be in accordance with Section 5704 and the International Building Code.
The capacity of permanent above-ground tanks containing Class I or II liquids shall not exceed 1,100 gallons (4164 L). The capacity of temporary above-ground tanks containing Class I or II liquids shall not exceed 10,000 gallons (37 854 L). Tanks shall be of the single-compartment design.
Exception: Permanent above-ground tanks of greater capacity that meet the requirements of Section 5704.2.
Tanks shall be provided with a method of normal and emergency venting. Normal vents shall be in accordance with Section 5704.2.7.3.
Emergency vents shall be in accordance with Section 5704.2.7.4. Emergency vents shall be arranged to discharge in a manner that prevents localized overheating or flame impingement on any part of the tank in the event that vapors from such vents are ignited.
Tanks with top openings shall be mounted in accordance with either of the following:
- On well-constructed metal legs connected to shoes or runners designed so that the tank is stabilized and the entire tank and its supports can be moved as a unit.
- For stationary tanks, on a stable base of timbers or blocks approximately 6 inches (152 mm) in height that prevents the tank from contacting the ground.
Tanks with a connection in the bottom or the end for gravity-dispensing liquids shall be mounted and equipped as follows:
- Supports to elevate the tank for gravity discharge shall be designed to carry all required loads and provide stability.
- Bottom or end openings for gravity discharge shall be equipped with a valve located adjacent to the tank shell that will close automatically in the event of fire through the operation of an effective heat-activated releasing device. Where this valve cannot be operated manually, it shall be supplemented by a second, manually operated valve.
The gravity discharge outlet shall be provided with an approved hose equipped with a self-closing valve at the discharge end of a type that can be padlocked to its hanger.
Where approved, liquids used as fuels are allowed to be transferred from tank vehicles into the tanks of motor vehicles or special equipment, provided that:
- The tank vehicle's specific function is that of supplying fuel to motor vehicle fuel tanks.
- The dispensing hose does not exceed 100 feet (30 480 mm) in length.
- The dispensing nozzle is an approved type.
- The dispensing hose is properly placed on an approved reel or in a compartment provided before the tank vehicle is moved.
- Signs prohibiting smoking or open flames within 25 feet (7620 mm) of the vehicle or the point of refueling are prominently posted on the tank vehicle.
- Electrical devices and wiring in areas where fuel dispensing is conducted are in accordance with NFPA 70.
- Tank vehicle-dispensing equipment is operated only by designated personnel who are trained to handle and dispense motor fuels.
- Provisions are made for controlling and mitigating unauthorized discharges.