As more states around the country legalize cannabis recreationally and medicinally, cannabis-related facilities must consider how to be safe and legally compliant. Different types of cannabis facilities will require different safety measures.
These hazards include egress, carbon dioxide enrichment, and cannabis extraction processes. Extraction processes vary, but can include the use of explosive materials.
Safety Concerns in Processing Facilities
Hazardous materials are used during the extraction process of cannabis. An NFPA brochure on cannabis safety breaks down the most common safety issues related to cannabis extraction, "During the extraction process, chemicals are removed from the plant for use in other cannabis based products."
Carbon dioxide is commonly injected to rooms with cannabis plants. These chemicals must be safely dispensed. According to the NPFA, "The extraction process is commonly completed by using a solvent, such as LP-gas or carbon dioxide, to strip the oils holding these chemicals from plant clippings."
Some common issues with extraction rooms, as defined by the NFPA, are listed below:
Topics to Consider
- Bulk handling and mixing of gases
- Off-gassing from products can be hazardous
- Improperly designed, installed or maintained equipment can create explosions
Marijuana growing, processing, or extraction facilities: Liquified petroleum gases and liquified natural gases
Failures or leaks of CO2 systems can pose health and safety risks to employees and first responders
Marijuana growing, processing, or extraction facilities, compressed gases and cryogenic fluids
Inconsistent or incomplete peer review for approved, non-listed extraction equipment
Marijuana growing, processing or extraction facilities
Learn more about other cannabis-related facility safety concerns here.
HazMat Buildings for Cannabis Facilities
DENIOS has experience providing hazardous material storage buildings to cannabis facilities. The structures protect workers and the environment from the processes used during these processes. Chapter 38 of the NFPA fire code was created to, “address the unique hazards of facilities where the growing and processing of marijuana occurs.”
Depending on the use of the facility, different occupancy codes will apply. For example, a grow facility will fall under 188.8.131.52 as “an occupancy primarily for the storage or sheltering of goods, merchandise, products, or vehicles.”
According to the NFPA, where the plants are being processed, the facility may require a classification of an industrial occupancy, defined in 184.108.40.206. “An occupancy in which products are manufactured or in which processing, assembling, mixing, packaging, finishing, decorating, or repair operations are conducted.” Extraction process facilities also fall under this classification.
Cannabis Worker Safety
Workers in the cannabis industry can face additional hazards while on the job. According to the “Guide to Worker Safety and Health in the Marijuana Industry” these include exposure to biological hazards, chemical hazards and physical hazards. Using the correct PPE can help protect workers.
“Biological hazards can arise from directly working with plants,” the Guide to Worker Safety and Health in the Marijuana industry says. These biological hazards can include mold, allergens and sensitizers.
Carbon dioxide, carbon monoxide, pesticides and disinfectants are a few of the chemical hazards cannabis workers can be exposed to. Carbon dioxide is commonly used throughout the industry to increase plant growth. “In addition to liquid gas form, solid carbon dioxide or dry ice can be used for extraction processes.” When working with dry ice, the proper gloves and safety glasses should be worn
"Physical hazards include hazards that might exist within the workplace that can cause physical harm or injury." In cannabis facilities, these can include powered industrial trucks, flammable and combustible gases, compressed gases and heights. "Flammable and combustible liquids are present in almost every workplace, including the marijuana industry," according to the Guide to Worker Safety. Correct PPE and storage solutions should be used for flammable and combustible materials.
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