UpCodes logo
Jump To Full Code Chapter
66.19.1 Scope
This section shall apply to the handling and use of flammable and combustible liquids in specific operations as herein described. [30:19.1]
66.19.2 Definitions Specific to Section 66.19
66.19.2.1* Cooking Oil
Where used in this chapter, cooking oil shall be defined as a Class IIIB combustible liquid. This definition shall apply to both fresh, or new, cooking oil and waste, or used, cooking oil. [30:19.2.1]
66.19.3 Reserved
66.19.4 Recirculating Heat Transfer Systems
66.19.4.1 Scope
66.19.4.1.1
This section shall apply only to recirculating heat transfer systems that use a heat transfer fluid that is heated up to or above its flash point under normal operation. [30:19.4.1.1]
66.19.4.1.2
This section shall not apply to process streams used as a means of heat transfer or to any heat transfer system of 60 gal (230 L) capacity or less. [30:19.4.1.2]
66.19.4.2* General Requirements
A heater or vaporizer for heat transfer fluid that is located inside a building shall meet all applicable requirements of Section 66.17. [30:19.4.2]
66.19.4.3* System Design
66.19.4.3.1*
Drainage shall be provided at strategic low points in the heat transfer system. Drains shall be piped to a safe location that is capable of accommodating the total capacity of the system or the capacity of that part of the system that is isolated. [30:19.4.3.1]
66.19.4.3.2*
Where the heat transfer system expansion tank is located above floor level and has a capacity of more than 250 gal (950 L), it shall be provided with a low-point drain line that can allow the expansion tank to drain to a drain tank on a lower level. The drain line valve shall be operable from a safe location. [30:19.4.3.2]
66.19.4.3.3
A heat transfer fluid system shall not be used to provide direct building heat. [30:19.4.3.3]
66.19.4.3.4
All pressure-relief device outlets shall be piped to a safe location. [30:19.4.3.4]
66.19.4.4* Fuel Burner Controls and Interlocks
Oil- or gas- fired heaters or vaporizers shall be designed and installed in accordance with the applicable requirements of NFPA 31 or NFPA 85 whichever is applicable. Wood dust suspension-fired heaters or vaporizers shall be designed and installed in accordance with the applicable requirements of NFPA 85. [30:19.4.4]
66.19.4.5 Piping
66.19.4.5.1*
Piping shall meet all applicable requirements of Section 66.27. [30:19.4.5.1]
66.19.4.5.2
All pipe connections shall be welded. [30:19.4.5.2]
66.19.4.5.2.1
Welded, threaded connections shall be permitted to be used for piping 2 in. (50 mm) and smaller. [30:19.4.5.2.1]
66.19.4.5.2.2
Mechanical joints shall be permitted to be used at pump, valve, and equipment connections. [30:19.4.5.2.2]
66.19.4.5.3
New piping that is to be insulated with permanent insulation and existing piping that has been disturbed and is to be reinsulated with permanent insulation shall be covered with a closed-cell, nonabsorbent insulation material. [30:19.4.5.3]
66.19.4.5.3.1
Where all pipe joints are welded and where there are no other points in the system subject to leakage, such as at valves or pumps, other types of insulation shall be permitted. [30:19.4.5.3.1]
66.19.4.5.3.2
Where dams are formed around possible leak-producing areas, using metal "donut" flanges that are welded to the pipe or using a "donut" segment of nonabsorbent insulation sealed to the pipe to prevent migration of leakage into adjacent insulation, the piping from dam to dam shall be considered to be a closed system and other types of insulation shall be permitted. The area subject to leakage where the dam has been constructed shall be insulated with nonabsorbent insulation or a nonabsorbent insulation system. [30:19.4.5.3.2]
66.19.4.5.3.3
Where removable, reusable insulated covers are required for access, the covers shall be fabricated of flexible or rigid insulation that is encapsulated in a manner to provide a nonabsorbent insulation system to prevent absorption of leakage into the insulation. [30:19.4.5.3.3]
66.19.4.6 Fire Protection
66.19.4.6.1*
Automatic sprinkler protection meeting the requirements of Section 13.3 and NFPA 13 for Extra Hazard (Group I) Occupancies shall be provided for building areas containing a heat transfer system heater or vaporizer. [30:19.4.6.1]
66.19.4.6.2
An alternate fire protection system shall be permitted to be used, if approved by the AHJ. Such alternate system shall be designed and installed in accordance with the appropriate NFPA standard and with manufacturer's recommendations for the system selected. [30:19.4.6.2]
66.19.4.7 Operation
66.19.4.7.1*
Operations involving heat transfer fluid systems and equipment shall be reviewed to ensure that the fire and explosion hazards resulting from loss of containment of the fluid or failure of the system are provided with corresponding fire prevention and emergency action plans. [30:19.4.7.1]
66.19.4.7.2
Operators of heat transfer systems shall be trained in the hazards of improper operation of the system and leakage and shall be trained to recognize upset conditions that can lead to dangerous situations. [30:19.4.7.2]
66.19.4.7.3
Safety interlocks shall be inspected, calibrated, and tested annually or at other intervals established in accordance with other applicable standards to determine that they are in proper operating condition. [30:19.4.7.3]
66.19.5 Vapor Recovery and Vapor Processing Systems
66.19.5.1 Scope
66.19.5.1.1
This section shall apply to vapor recovery and vapor processing systems where the vapor source operates at pressures from vacuum up to and including a gauge pressure of 1.0 psi (6.9 kPa), or where there is a potential for vapor mixtures in the flammable range. [30:19.5.1.1]
66.19.5.1.2
This section shall not apply to the following:
  1. Marine systems that comply with U.S. Department of Transportation Regulations in Title 33, Code of Federal Regulations, Parts 154, 155, and 156, and U.S. Coast Guard Regulations in Title 46, Code of Federal Regulations, Parts 30, 32, 35, and 39
  2. Marine and automotive service station systems that comply with Chapter 30 and NFPA 30A
[30:19.5.1.2]
66.19.5.2 Overpressure Protection and Vacuum Protection
Tanks and equipment shall have independent venting for overpressure or vacuum conditions that could occur from malfunction of the vapor recovery or vapor processing system.
Exception: For tanks, venting shall comply with 66.21.4.3. [30:19.5.2]
66.19.5.3 Vent Location
66.19.5.3.1
Vents on vapor processing systems shall be not less than 12 ft (3.7 m) from adjacent ground level, with outlets located and directed so that ignitible vapors will disperse to a concentration below the lower flammable limit before reaching any location that contains an ignition source. [30:19.5.3.1]
66.19.5.3.2
Vent outlets shall be located so that vapors will not be trapped by eaves or other obstructions and shall be at least 5 ft (1.5 m) from building openings and at least 15 ft (4.5 m) from powered ventilation air intake devices. [30:19.5.3.2]
66.19.5.3.3
Vapor processing equipment and their vents shall be located in accordance with 66.17.3. [30:19.5.3.3]
66.19.5.4 Vapor Collection Systems
66.19.5.4.1
Vapor collection piping shall be designed to prevent trapping liquid. [30:19.5.4.1]
66.19.5.4.2
Vapor recovery and vapor processing systems that are not designed to handle liquid shall be provided with a means to eliminate any liquid that carries over to or condenses in the vapor collection system. [30:19.5.4.2]
66.19.5.5 Liquid Level Monitoring
66.19.5.5.1*
A liquid knock-out vessel used in the vapor collection system shall have means to verify the liquid level and a high liquid level sensor that activates an alarm. [30:19.5.5.1]
66.19.5.5.2
For unattended facilities, the high liquid level sensor shall initiate shutdown of liquid transfer into the vessel and shutdown of vapor recovery or vapor processing systems. [30:19.5.5.2]
66.19.5.6 Overfill Protection
66.19.5.6.1
Storage tanks served by vapor processing or vapor recovery systems shall be equipped with overfill protection in accordance with 66.21.7.1. [30:19.5.6.1]
66.19.5.6.2
Overfill protection of tank vehicles shall be in accordance with applicable provisions of 66.28.11.1. [30:19.5.6.2]
66.19.5.7 Sources of Ignition
66.19.5.7.1 Vapor Release
Tank or equipment openings provided for purposes of vapor recovery shall be protected against possible vapor release in accordance with 66.23.13.7 and 66.28.11.1.8.1. [30:19.5.7.1]
66.19.5.7.2* Electrical Area Classification
Electrical area classification shall be in accordance with Section 66.7. [30:19.5.7.2]
66.19.5.7.3* Static Electricity
Vapor collection and vapor processing equipment shall be protected against static electricity in accordance with 66.6.5.4. [30:19.5.7.3]
66.19.5.7.4* Spontaneous Ignition
Equipment shall be designed or written procedures established and implemented to prevent ignition where the potential exists for spontaneous ignition. [30:19.5.7.4]
66.19.5.7.5* Friction Heat or Sparks From Mechanical Equipment
Mechanical equipment used to move vapors that are in the flammable range shall be designed to prevent sparks or other ignition sources under both normal and equipment malfunction conditions. [30:19.5.7.5]
66.19.5.7.6* Flame Propagation
Where there is reasonable potential for ignition of a vapor mixture in the flammable range, means shall be provided to stop the propagation of flame through the vapor collection system. The means chosen shall prevent flame propagation under the conditions with which they will be used. [30:19.5.7.6]
66.19.5.7.7 Explosion Protection
Where used, explosion protection systems shall comply with NFPA 69. [30:19.5.7.7]
66.19.5.8 Emergency Shutdown Systems
Emergency shutdown systems shall be designed to fail to a safe position in the event of loss of normal system power (i.e., air or electric) or equipment malfunction. [30:19.5.8]
66.19.6 Solvent Distillation Units
66.19.6.1 Scope
66.19.6.1.1
This section shall apply to solvent distillation units having distillation chambers or still pots that do not exceed 60 gal (227 L) nominal capacity and are used to recycle Class I, Class II, or Class IIIA liquids. [30:19.6.1.1]
66.19.6.1.2
This section shall not apply to research, testing, or experimental processes; to distillation processes carried out in petroleum refineries, chemical plants, or distilleries; or to distillation equipment used in dry cleaning operations. [30:19.6.1.2]
66.19.6.2 Equipment
Solvent distillation units shall be approved or shall be listed in accordance with ANSI/UL 2208, Standard for Solvent Distillation Units. [30:19.6.2]
66.19.6.3 Solvents
Solvent distillation units shall only be used to distill liquids for which they have been investigated and that are listed on the unit's marking or contained within the manufacturers' literature. [30:19.6.3]
66.19.6.3.1
Unstable or reactive liquids or materials shall not be processed unless they have been specifically listed on the system's markings or contained within the manufacturer's literature. [30:19.6.3.1]
66.19.6.4 Location
66.19.6.4.1
Solvent distillation units shall be located and operated in locations in accordance with their approval or listing. [30:19.6.4.1]
66.19.6.4.2
Solvent distillation units shall not be used in basements. [30:19.6.4.2]
66.19.6.4.3
Solvent distillation units shall be located away from potential sources of ignition, as indicated on the unit's marking. [30:19.6.4.3]
66.19.6.5 Liquid Storage
Distilled liquids and liquids awaiting distillation shall be stored in accordance with this Code. [30:19.6.5]
66.19.7 Cooking Oil Storage Tank Systems in Commercial Kitchens
66.19.7.1 Scope
66.19.7.1.1
This section shall apply to storage tank systems for cooking oil, as defined in 66.19.2.1, located in commercial kitchens where tank capacities are greater than 60 gal (227 L). [30:19.7.1.1]
66.19.7.1.2
This section shall apply to both fresh and waste cooking oil storage tank systems. [30:19.7.1.2]
66.19.7.1.3*
Where there are conflicts between the requirements of this section and requirements of other sections of this code, the requirements of this section shall take precedence. [30:19.7.1.3]
66.19.7.2 Design and Construction of Cooking Oil Storage Tanks
66.19.7.2.1 Materials of Construction
Tanks shall be constructed of materials of metallic or nonmetallic construction. [30:19.7.2.1]
66.19.7.2.1.1
Tanks and their appurtenances shall be constructed of materials compatible with cooking oil. [30:19.7.2.1.1]
66.19.7.2.1.2*
For tanks storing waste cooking oil, the materials of construction of the tanks and their appurtenances shall be compatible with cooking oil at minimum temperatures of 140°F (60°C) continuous and 235°F (113°C) intermittent. [30:19.7.2.1.2]
66.19.7.2.2 Design Standards
66.19.7.2.2.1*
Metallic cooking oil storage tanks shall be listed in accordance with ANSI/UL 142, Standard for Steel Aboveground Tanks for Flammable and Combustible Liquids, or ANSI/UL 80, Standard for Steel Tanks for Oil-Burner Fuels and Other Combustible Liquids. [30:19.7.2.2.1]
66.19.7.2.2.2
Nonmetallic cooking oil storage tanks shall be listed in accordance with UL 2152, Outline of Investigation for Special Purpose Nonmetallic Containers and Tanks for Specific Combustible or Noncombustible Liquids, and shall not exceed 200 gal (757 L) per tank. [30:19.7.2.2.2]
66.19.7.2.3 Normal Venting
66.19.7.2.3.1
The normal vent(s) shall be located above the maximum normal liquid level. [30:19.7.2.3.1]
66.19.7.2.3.2
The normal vent shall be at least as large as the largest filling or withdrawal connection. [30:19.7.2.3.2]
66.19.7.2.3.3
Where used, normal vents, including vent piping, that are smaller than 1.25 in. (32 mm) nominal inside diameter shall be tested to verify that internal tank pressures will remain below a gauge pressure of 0.5 psi (3.5 kPa) under maximum expected flow rates for tank filling and withdrawal. These tests shall be permitted to be conducted by a qualified outside agency or by the manufacturer, if certified by a qualified observer. [30:19.7.2.3.3]
66.19.7.2.3.4*
Normal vents shall be permitted to discharge inside the building. [30:19.7.2.3.4]
66.19.7.2.4 Emergency Venting
66.19.7.2.4.1
Cooking oil storage tanks shall be provided with emergency relief venting in accordance with Section 66.22. [30:19.7.2.4.1]
66.19.7.2.4.2*
For nonmetallic cooking oil storage tanks, emergency relief venting by form of construction shall be permitted. This shall include the low melting point of the material of construction of the tank. [30:19.7.2.4.2]
66.19.7.2.4.3
For metallic cooking oil storage tanks, emergency relief venting by form of construction shall be prohibited. [30:19.7.2.4.3]
See More

Related Code Sections

66.19 Flammable and Combustible Liquids, Specific Operations
This section shall apply to the handling and use of flammable and combustible liquids in specific operations as herein described. [30:19.1 ...
66.19.6 Flammable and Combustible Liquids, Solvent Distillation Units
in petroleum refineries, chemical plants, or distilleries; or to distillation equipment used in dry cleaning operations. [30:19.6.1.2 ...
66.19.2.1* Flammable and Combustible Liquids, Cooking Oil
Where used in this chapter, cooking oil shall be defined as a Class IIIB combustible liquid. This definition shall apply to both fresh, or new ...
66.19.4.7 Flammable and Combustible Liquids, Operation
Operations involving heat transfer fluid systems and equipment shall be reviewed to ensure that the fire and explosion hazards resulting from loss ...