Section 5706 Special Operations
This section shall cover the provisions for special operations that include, but are not limited to, storage, use, dispensing, mixing or handling of flammable and combustible liquids. The following special operations shall be in accordance with Sections 5701, 5703, 5704 and 5705, except as provided in Section 5706.
- Storage and dispensing of flammable and combustible liquids on farms and construction sites.
- Well drilling and operating.
- Bulk plants or terminals.
- Bulk transfer and process transfer operations utilizing tank vehicles and tank cars.
- Tank vehicles and tank vehicle operation.
- Vapor recovery and vapor-processing systems.
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.
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.
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.
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.
- 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.
- 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.
Storage tanks or boilers, fired heaters, open-flame devices or other sources of ignition shall not be located within 25 feet (7620 mm) of well heads. Smoking is prohibited at wells or tank locations except as designated and in approved posted areas.
Exception: Engines used in the drilling, production and serving of wells.
This section shall apply to all wharves, piers, bulkheads and other structures over or contiguous to navigable water having a primary function of transferring liquid cargo in bulk between shore installations and tank vessels, ships, barges, lighter boats or other mobile floating craft.