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5706.1 General
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.
  1. Storage and dispensing of flammable and combustible liquids on farms and construction sites.
  2. Well drilling and operating.
  3. Bulk plants or terminals.
  4. Bulk transfer and process transfer operations utilizing tank vehicles and tank cars.
  5. Tank vehicles and tank vehicle operation.
  6. Refineries.
  7. Vapor recovery and vapor-processing systems.
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 605 and the International Mechanical Code.
5706.2.1 Combustibles and Open Flames Near Tanks
Storage areas shall be kept free from weeds and extraneous combustible material. Open flames and smoking are prohibited in flammable or combustible liquid storage areas.
5706.2.2 Marking of Tanks and Containers
Tanks and containers for the storage of liquids above ground shall be conspicuously marked with the name of the product that they contain and the words: "FLAMMABLE—KEEP FIRE AND FLAME AWAY." Tanks shall bear the additional marking: "KEEP 50 FEET FROM BUILDINGS."
5706.2.3 Containers for Storage and Use
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.
5706.2.4 Permanent and Temporary Tanks
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.
5706.2.4.1 Fill-Opening Security
Fill openings shall be equipped with a locking closure device. Fill openings shall be separate from vent openings.
5706.2.4.2 Vents
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.
5706.2.4.3 Location
Tanks containing Class I or II liquids shall be kept outside and not less than 50 feet (15 240 mm) from buildings and combustible storage. Additional distance shall be provided where necessary to ensure that vehicles, equipment and containers being filled directly from such tanks will not be less than 50 feet (15 240 mm) from structures, haystacks or other combustible storage.
5706.2.4.4 Locations Where Above-Ground Tanks Are Prohibited
The storage of Class I and II liquids in above-ground tanks is prohibited within the limits established by law as the limits of districts in which such storage is prohibited [JURISDICTION TO SPECIFY].
5706.2.5 Type of Tank
Tanks shall be provided with top openings only or shall be elevated for gravity discharge.
5706.2.5.1 Tanks With Top Openings Only
Tanks with top openings shall be mounted in accordance with either of the following:
  1. 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.
  2. 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.
5706.2.5.1.1 Pumps and Fittings
Tanks with top openings only shall be equipped with a tightly and permanently attached, approved pumping device having an approved hose of sufficient length for filling vehicles, equipment or containers to be served from the tank. Either the pump or the hose shall be equipped with a padlock to its hanger to prevent tampering. An effective antisiphoning device shall be included in the pump discharge unless a self-closing nozzle is provided. Siphons or internal pressure discharge devices shall not be used.
5706.2.5.2 Tanks for Gravity Discharge
Tanks with a connection in the bottom or the end for gravity-dispensing liquids shall be mounted and equipped as follows:
  1. Supports to elevate the tank for gravity discharge shall be designed to carry all required loads and provide stability.
  2. 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.
5706.2.6 Spill Control Drainage Control and Diking
Indoor storage and dispensing areas shall be provided with spill control and drainage control as set forth in Section 5703.4. Outdoor storage areas shall be provided with drainage control or diking as set forth in Section 5704.2.10.
5706.2.7 Portable Fire Extinguishers
Portable fire extinguishers with a minimum rating of 20-B:C and complying with Section 906 shall be provided where required by the fire code official.
5706.2.8 Dispensing From Tank Vehicles
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:
  1. The tank vehicle's specific function is that of supplying fuel to motor vehicle fuel tanks.
  2. The dispensing hose does not exceed 100 feet (30 480 mm) in length.
  3. The dispensing nozzle is an approved type.
  4. The dispensing hose is properly placed on an approved reel or in a compartment provided before the tank vehicle is moved.
  5. 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.
  6. Electrical devices and wiring in areas where fuel dispensing is conducted are in accordance with NFPA 70.
  7. Tank vehicle-dispensing equipment is operated only by designated personnel who are trained to handle and dispense motor fuels.
  8. Provisions are made for controlling and mitigating unauthorized discharges.
5706.2.8.1 Location
Dispensing from tank vehicles shall be conducted not less than 50 feet (15 240 mm) from structures or combustible storage.
5706.3 Well Drilling and Operating
Wells for oil and natural gas shall be drilled and operated in accordance with Sections 5706.3.1 through 5706.3.8.
5706.3.1 Location
The location of wells shall comply with Sections 5706.3.1.1 through 5706.3.1.3.2.
5706.3.1.1 Storage Tanks and Sources of Ignition
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.
5706.3.1.2 Streets and Railways
Wells shall not be drilled within 75 feet (22 860 mm) of any dedicated public street, highway or nearest rail of an operating railway.
5706.3.1.3 Buildings
Wells shall not be drilled within 100 feet (30 480 mm) of buildings not necessary to the operation of the well.
5706.3.1.3.1 Group A, E or I Buildings
Wells shall not be drilled within 300 feet (91 440 mm) of buildings with an occupancy in Group A, E or I.
5706.3.1.3.2 Existing Wells
Where wells are existing, buildings shall not be constructed within the distances set forth in Section 5706.3.1 for separation of wells or buildings.
5706.3.2 Waste Control
Control of waste materials associated with wells shall comply with Sections 5706.3.2.1 and 5706.3.2.2.
5706.3.2.1 Discharge on a Street or Water Channel
Liquids containing crude petroleum or its products shall not be discharged into or on streets, highways, drainage canals or ditches, storm drains or flood control channels.
5706.3.2.2 Discharge and Combustible Materials on Ground
The surface of the ground under, around or near wells, pumps, boilers, oil storage tanks or buildings shall be kept free from oil, waste oil, refuse or waste material.
5706.3.3 Sumps
Sumps associated with wells shall comply with Sections 5706.3.3.1 through 5706.3.3.3.
5706.3.3.1 Maximum Width
Sumps or other basins for the retention of oil or petroleum products shall not exceed 12 feet (3658 mm) in width.
5706.3.3.2 Backfilling
Sumps or other basins for the retention of oil or petroleum products larger than 6 feet by 6 feet by 6 feet (1829 mm by 1829 mm by 1829 mm) shall not be maintained longer than 60 days after the cessation of drilling operations.
5706.3.3.3 Security
Sumps, diversion ditches and depressions used as sumps shall be securely fenced or covered.
5706.3.4 Prevention of Blowouts
Protection shall be provided to control and prevent the blowout of a well. Protection equipment shall meet federal, state and other applicable jurisdiction requirements.
5706.3.5 Storage Tanks
Storage of flammable or combustible liquids in tanks shall be in accordance with Section 5704. Oil storage tanks or groups of tanks shall have posted in a conspicuous place, on or near such tank or tanks, an approved sign with the name of the owner or operator, or the lease number and the telephone number where a responsible person can be reached at any time.
5706.3.6 Soundproofing
Where soundproofing material is required during oil field operations, such material shall be noncombustible.
5706.3.7 Signs
Well locations shall have posted in a conspicuous place on or near such tank or tanks an approved sign with the name of the owner or operator, name of the leasee or the lease number, the well number and the telephone number where a responsible person can be reached at any time. Such signs shall be maintained on the premises from the time materials are delivered for drilling purposes until the well is abandoned.
5706.3.8 Field-Loading Racks
Field-loading racks shall be in accordance with Section 5706.5.
5706.4 Bulk Plants or Terminals
Portions of properties where flammable and combustible liquids are received by tank vessels, pipelines, tank cars or tank vehicles and stored or blended in bulk for the purpose of distribution by tank vessels, pipelines, tanks cars, tank vehicles or containers shall be in accordance with Sections 5706.4.1 through 5706.4.10.4.
5706.4.1 Building Construction
Buildings shall be constructed in accordance with the International Building Code.
5706.4.2 Means of Egress
Rooms in which liquids are stored, used or transferred by pumps shall have means of egress arranged to prevent occupants from being trapped in the event of fire.
5706.4.3 Heating
Rooms in which Class I liquids are stored or used shall be heated only by means not constituting a source of ignition, such as steam or hot water. Rooms containing heating appliances involving sources of ignition shall be located and arranged to prevent entry of flammable vapors.
5706.4.4 Ventilation
Ventilation shall be provided for rooms, buildings and enclosures in which Class I liquids are pumped, used or transferred. Design of ventilation systems shall consider the relatively high specific gravity of the vapors. Where natural ventilation is used, adequate openings in outside walls at floor level, unobstructed except by louvers or coarse screens, shall be provided. Where natural ventilation is inadequate, mechanical ventilation shall be provided in accordance with the International Mechanical Code.
5706.4.4.1 Basements and Pits
Class I liquids shall not be stored or used within a building having a basement or pit into which flammable vapors can travel, unless such area is provided with ventilation designed to prevent the accumulation of flammable vapors therein.
5706.4.4.2 Dispensing of Class I Liquids
Containers of Class I liquids shall not be drawn from or filled within buildings unless a provision is made to prevent the accumulation of flammable vapors in hazardous concentrations. Where mechanical ventilation is required, it shall be kept in operation while flammable vapors could be present.
5706.4.5 Storage
Storage of Class I, II and IIIA liquids in bulk plants shall be in accordance with the applicable provisions of Section 5704.
5706.4.6 Overfill Protection of Class I and II Liquids
Manual and automatic systems shall be provided to prevent overfill during the transfer of Class I and II liquids from mainline pipelines and marine vessels in accordance with API 2350.
5706.4.7 Wharves
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.
5706.4.7.1 Transferring Approvals
Handling packaged cargo of liquids, including full and empty drums, bulk fuel and stores, over a wharf during cargo transfer shall be subject to the approval of the wharf supervisor and the senior deck officer on duty.
5706.4.7.2 Transferring Location
Wharves at which liquid cargoes are to be transferred in bulk quantities to or from tank vessels shall be not less than 100 feet (30 480 mm) from any bridge over a navigable waterway; or from an entrance to, or superstructure of, any vehicular or railroad tunnel under a waterway. The termination of the fixed piping used for loading or unloading at a wharf shall be not less than 200 feet (60 960 mm) from a bridge or from an entrance to, or superstructures of, a tunnel.
5706.4.7.3 Superstructure and Decking Material
Superstructure and decking shall be designed for the intended use. Decking shall be constructed of materials that will afford the desired combination of flexibility, resistance to shock, durability, strength and fire resistance.
5706.4.7.4 Tanks Allowed
Tanks used exclusively for ballast water or Class II or III liquids are allowed to be installed on suitably designed wharves.
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