Okla. Admin. Code § 748:20-4-44

Current through Vol. 42, No. 8, January 2, 2025

Section 748:20-4-44 - IFC[®] 2018 Chapter 39 Processing and Extraction Facilities

Chapter 39 of the Oklahoma adopted IFC® has been with the following modifications:

(1) Section 3903.2 Prohibited occupancies. This section has been modified to clarify the section is applicable to both extraction equipment and extraction processes utilizing materials classified as physical hazards in accordance with Section 307 of the International Building Code® and other provisions of this code and shall not be located in any building containing a Group A, E, I or R occupancy. This section has been modified to read: 3903.2 Prohibited occupancies. Extraction equipment and extraction processes utilizing materials classified as physical hazards in accordance with Section 307 of the International Building Code® and other provisions of this code shall not be located in any building containing a Group A, E, I or R occupancy.

(2) Section 3903.3 Location. This section has been modified to clarify extraction equipment and extraction processes utilizing materials classified as physical hazards in accordance with Section 307 of the International Building Code® and other provisions of this code shall be located in a room dedicated to extraction and prohibits the room from being used for any other purpose. The section prohibits the storage of solvents in the extraction room. This section has been modified to read: 3903.3 Location. The extraction equipment and extraction processes utilizing materials classified as physical hazards in accordance with Section 307 of the International Building Code® and other provisions of this code as solvents shall be located in a room dedicated to extraction and the room shall not be used for any other purpose. There shall be no storage of solvents in the extraction room.

(3) Section 3903.4 Post-process purification and winterization. This section has been modified to clarify post processing and winterization includes heating, cooling or pressurizing of the miscella to other than normal pressure or temperature to be approved and performed in an appliance listed for such use and requires compliance with Sections 3903.4.1 or 3903.4.2. The section prohibits the use of domestic or commercial cooking appliances. This section has been modified to read: 3903.4 Post-process purification and winterization. Post-processing and winterization involving the heating, cooling or pressurizing of the miscella to other than normal pressure or temperature shall be approved and performed in an appliance listed for such use and shall comply with Sections 3903.4.1 through 3903.4.3. Domestic or commercial cooking appliances and cooling appliances shall not be used.

(4) Section 3903.4.2 Refrigerators, freezers and other cooling equipment. This section has been added to require refrigerators, freezers and other cooling equipment used to store or cool flammable liquids to be listed for the storage of flammable and/or combustible liquids or shall be listed for Class I Division I locations in accordance with NFPA 70®. This section has been added to read: 3903.4.2 Refrigerators, freezers and other cooling equipment. Refrigerators, freezers and other cooling equipment used to store or cool flammable liquids shall be listed for the storage of flammable and/or combustible liquids or shall be listed for Class I, Division I locations in accordance with NFPA 70®.

(5) Section 3903.4.3. Post-processing. This section has been added to require post-processing operations, including dispensing of flammable liquids between containers, to be performed within a hazardous exhaust fume hood rated for exhausting flammable vapors and listed to UL 1805. The section requires the electrical equipment utilized within the hazardous exhaust fume hood to be rated for use in flammable atmospheres and provides an exception for the exhaust fume hood when an approved exhaust system is installed in accordance with NFPA 91®. This section has been added to read: 3903.4.3 Post-processing. Post-processing operations, including dispensing of flammable liquids between containers, shall be performed within a hazardous exhaust fume hood rated for exhausting flammable vapors and listed in accordance with UL 1805. Electrical equipment used within the hazardous exhaust fume hood shall be rated for use in flammable atmospheres. Exception: A hazardous exhaust fume hood is not required where an approved exhaust system is installed in accordance with NFPA 91®.

(6) Section 3903.5 Use of flammable and combustible liquids. This section has been modified to specify the use of flammable and combustible liquids for liquid extraction processes, including the dispensing of flammable liquids between containers, where the liquid is boiled, distilled, or evaporated, to be located within a hazardous exhaust fume hood, rated for exhausting flammable vapors and listed in accordance with UL 1805. The section requires all electrical equipment used within the hazardous exhaust fume hood to be rated for use in flammable atmospheres and prohibits the heating of flammable or combustible liquids over an open flame, and provides exceptions when certain conditions are met. This section has been modified to read: 3903.5 Use of flammable and combustible liquids. The use of flammable and combustible liquids for liquid extraction processes, including dispensing of flammable liquids between containers, where the liquid is boiled, distilled, or evaporated shall be located within a hazardous exhaust fume hood, rated for exhausting flammable vapors and listed in accordance with UL 1805. Electrical equipment used within the hazardous exhaust fume hood shall be rated for use in flammable atmospheres. Heating of flammable or combustible liquids over an open flame is prohibited. Exceptions:

(A) The use of a heating element not rated for flammable atmospheres, where documentation from the manufacturer, or approved testing laboratory indicates the element is rated for heating of flammable liquids.

(B) Unheated processes at atmospheric pressure using less than 16 oz. (473 ml) of flammable liquids are not required to be located within a hazardous exhaust fume hood.

(C) A hazardous exhaust fume hood is not required where an approved exhaust system is installed in accordance with NFPA 91®. Electrical equipment used within this room shall be rated for use in flammable atmosphere.

(7) Section 3903.6 Liquefied petroleum gas. This section has been modified to require plant processing and extraction utilizing liquefied petroleum gas to comply with Sections 3903.6.1 through 3903.6.4 and other applicable provisions of this code. This section has been modified to read: 3903.6 Liquefied petroleum gas. Plant processing and extraction utilizing liquefied petroleum gas shall comply with Section 3903.6.1 through 3903.6.4 and other applicable provisions of this code.

(8) Section 3903.6.1 Release of gas. This section has been added to prohibit liquefied petroleum gases to be released to the atmosphere except when released in accordance with Section 7.3 of NFPA 58®. This section has been added to read: 3903.6 Release of gas. Liquefied petroleum gases shall not be released to the atmosphere except where released in accordance with Section 7.3 of NFPA 58®.

(9) Section 3903.6.2 Exhaust. This section has been added to require any plant processing and extraction utilizing liquefied petroleum gas including processes for off- gassing spent plant material and oil retrieval to be located under a chemical fume hood and listed in accordance with UL 1805. The section provides an exception where an approved exhaust system is installed in accordance with NFPA 91® This section has been added to read: 3903.6.2 Exhaust. Plant processing and extraction utilizing liquefied petroleum gas, including processes for off-gassing spent plant material and oil retrieval, shall be located under a chemical fume hood, and listed in accordance with UL1805. Exception: A chemical fume hood is not required where an approved exhaust system is installed in accordance with NFPA 91®.

(10) Section 3903.6.3 Electrical. This section has been added to require the extraction room where liquefied petroleum gas is used as a solvent to be classified as Class I, Division I hazardous location in accordance with NFPA 70®. The section requires all conductive equipment and conductive objects within the extraction room to be bonded and grounded with a resistance of less than 1.0 times 10 to the sixth power ohms in accordance with NFPA 70®. This section has been added to read: 3903.6.3 Electrical. The extraction room where liquefied petroleum gas is used as a solvent shall be classified as Class I, Division I hazardous location in accordance with NFPA 70®. All conductive equipment and conductive objects within the extraction room shall be bonded and grounded with a resistance of less than 1.0 times 10 to the sixth power ohms in accordance with NFPA 70®.

(11) Section 3903.6.4 Automatic fire-extinguishing system. This section has been added to require chemical fume hoods and enclosures, including ductwork required by Section 3903.6.2 to be provided with an automatic fire-extinguishing system complying with Section 903.3.1.1, 904.6, 904.8 or 904.10. This section has been added to read: 3903.6.4 Automatic fire-extinguishing system. Chemical fume hoods and enclosures, including ductwork required by Section 3903.6.2 shall be provided with an automatic fire- extinguishing system complying with Section 903.3.1.1, 904.6, 904.8 or 904.10.

(12) Section 3903.7 Carbon dioxide extraction. This section has been added to require plant processing and extraction facilities utilizing carbon dioxide solvents to comply with Sections 3903.7.1 through 3903.7.3, Section 5307 and other applicable provisions of the code. This section has been added to read: 3903.7 Carbon dioxide extraction. Plant processing and extraction facilities utilizing carbon dioxide solvents shall comply with Sections 3903.7.1 through 3903.7.3, Section 5307 and other applicable provisions of this code.

(13) Section 3903.7.1 Storage and handling. This section has been added to require all carbon dioxide compressed gas cylinders to be secured to a fixed object to prevent falling. This section has been added to read: 3903.7.1 Storage and handling. All carbon dioxide compressed gas cylinders shall be secured to a fixed object to prevent falling.

(14) Section 3903.7.2 Gas detection system. This section has been added to require a gas detection system complying with Sections 916 and 5307.4.3 to be provided in a room where carbon dioxide solvents are used in the extraction process. This section has been added to read: 3703.7.2 Gas detection system. A gas detection system complying with Sections 916 and 5307.4.3 shall be provided in a room where carbon dioxide solvents are used in the extraction process.

(15) Section 3903.7.3 Carbon dioxide discharge. This section has been added to require the carbon dioxide equipment pressure relief device and blow-off valves to be piped to the exterior of the building. This section has been added to read: 3903.7.3 Carbon dioxide discharge. The carbon dioxide extraction equipment pressure relief device and blow-off valves shall be piped to the exterior of the building.

(16) Section 3905.3 Emergency power system. This section has been added to require the extraction room lighting and extraction room ventilation system to be provided with emergency power for extraction processes utilizing hydrocarbon gases or liquids as solvents, in accordance with Section 2702 of the International Building Code®. This section has been added to read: 3905.3 Emergency power system. For extraction processes utilizing hydrocarbon gases or liquids as solvents, the extraction room lighting and extraction room ventilation system shall be provided with emergency power in accordance with Section 2702 of the International Building Code®.

Okla. Admin. Code § 748:20-4-44

Adopted by Oklahoma Register, Volume 37, Issue 24, September 1, 2020, eff. 8/3/2020

Adopted by Oklahoma Register, Volume 38, Issue 24, September 1, 2021, eff. 9/14/2021