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Publication Title | MARIJUANA EXTRACTION GUIDELINE FOR COMMERCIAL LICENSED FACILITIES

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Denver Fire Department
Fire Prevention Division
745 West Colfax Avenue Denver, CO 80204 p: 720.913.3474 f: 720.913.3596 www.denvergov.org/fire
MARIJUANA EXTRACTION GUIDELINE FOR COMMERCIAL / LICENSED FACILITIES
The information contained within this guideline is provided solely for the convenience of the reader to help clarify how the Denver Fire Code (DFC) applies to marijuana extraction processes and equipment at commercial facilities licensed by the Denver Department of Excise and Licenses. Because every process and building differs, this guideline is not intended to identify or discuss every code requirement applicable and it is not intended to be a regulatory document; therefore, it is the responsibility of the persons performing these processes and/or otherwise responsible for the design or construction of extraction rooms, equipment, and operations to follow all applicable Codes and Standards as adopted by the City and County of Denver. This guideline is based upon the 2016 Denver Fire Code.
Part I – Extraction Process Equipment
Extraction equipment, including equipment used for winterization or other oil refining processes, that use hazardous materials (i.e. flammable / combustible liquids, Carbon Dioxide (CO2), liquefied petroleum gases (i.e. butane), etc) are required to be listed or approved per DFC Section 2703.2.3.
I.A Liquefied Petroleum Gas (LPG) and CO2 Extraction Equipment
Only closed-loop type LPG extraction equipment is permitted. Open blasting extractions or equipment that releases butane to the atmosphere during the extraction process is strictly prohibited.
Because there is no listing (such as UL, ETL, etc) available for compressed-gas extraction systems using hazardous materials, extraction equipment approval is required from the Denver Fire Department for use in the City and County of Denver. To obtain equipment approval, an engineering report (signed and sealed by a licensed Colorado engineer) must be submitted for approval. This approval report is required by DFC Section 104.7.2. It is the responsibility of the engineer to justify how the system meets the Denver Fire Code and any other national standards as a basis of design, including an analysis / description of every component of the system. Thus far, approved LPG (i.e. butane or propane) only closed-loop systems have been designed to applicable sections of NFPA 58. Open-blast LPG extractions are prohibited. In addition to the engineering report, an owners operation manual must be submitted with specific instructions regarding proper use of the equipment and any safety provisions identified. Equipment may be submitted / approved either by a Master Engineering Report or a Site Specific Engineering report. Engineering reports can be submitted in hard copy, signed and sealed by the licensed design professional, at 745 W Colfax, attention Brian Lukus.
In addition to this engineering report approval process, if the extraction equipment uses electrical components, a National Recognized Testing Laboratory (NRTL) listing is also required in addition to the engineering report certifying that the electrical components are compliant with appropriate electrical standards.
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