C1D1 vs. C1D2 Guidelines: Understanding the Differences

C1D1 vs. C1D2 Guidelines: Understanding the Differences

When it comes down to operational security, there are few things as complex to handle as hazardous materials. Due to the widespread use of flammable, explosive, corrosive, acidic, and poisonous items, government agencies established regulations to keep business operations in check. Without such guidance and oversight, unsafe business practices could compromise staff safety.

Though every industry is different when it comes down to particularities, cannabis is one such sector where hazards could harm workers. The last thing you want is to have a problem with cannabis processing and allow an unsafe production environment to persist. That’s why C1D1 and C1D2 certifications exist. Here is the key to understanding the differences between C1D1 and C1D2 guidelines.

Safety Location Classification 101

C1D1 and C1D2 are not randomly generated numbers and letters; they correspond to a comprehensive safety location classification system. These designations refer to various classes and divisions of materials and situations that render various business practices dangerous. Understanding the parameters for these classifications will help every cannabis business operate with maximum safety precautions and above-board practices.


The safety class and division structure came from a joint effort by the National Fire Protection Association and Occupational Safety and Health Administration. These organizations work to ensure that all workplace hazards, and specifically, fire-related ones, remain in check. Though these regulations only scratch the surface of their bureaucratic purview, the C1D1 and C1D2 guidelines are vital to cannabis growers, extractors, purifiers, and producers.

Class 1 Division 1

Class one locations contain flammable gas vapors in significant quantities that could lead to a fire or explosion. Division one designations indicate that these gases are present during regular operating conditions. However, the vapors only release during specific atypical situations like maintenance repairs, leaks, breakdowns, or improper operation.

Class 1 Division 2

These codes refer to the same flammable gas situation. Division two designations indicate that the gases are present but only in closed systems or containers. Again, exposure to these gases occurs during problematic scenarios like production errors and machine ruptures.

Zoning and Certifications

C1D1 and C1D2 codes express nuanced expectations for general workplace safety; they apply to specific areas on the production floor. The easiest way to bound and cordon off these hazard-bearing locales is with clearly marked zoning designations. In your cannabis lab, you should mark what materials you have in the space and the prevalent hazards associated with them.

C1D1 and C1D2 information is more than a suggestion—it is a certification for a business production space. While you should certainly use the information and regulations while building and organizing your setup, it is not uncommon for local government inspectors to assess your fire safety compliance. Ensure your facility is up to snuff by using certified machines and organizational techniques.

Cannabis Extraction and Safety Classifications

Cannabis extraction methods vary based on scientific procedure, but they usually require the use of heat or flammable substances. Due to this hazardous presence, cannabis facilities must have safety regulations in place. Otherwise, the classifications are worthless and don’t prevent employee harm.

The Hazards of Cannabis Production

The most common cannabis production problems arise during the extraction phase. The extraction room fills with flammable solvent concentrations that will build. Unless otherwise ventilated, this buildup could mix with heat or open flames and cause an explosion.

This may beg the question, “Why use flammable solvents in the first place?” Well, ethanol and hydrocarbons are two of the prime extraction solvents that are efficient and easy to procure. Unfortunately, they are both highly combustible, making for potentially unsafe working conditions.

C1D1 in the Cannabis Industry

C1D1 compliant cannabis labs typically receive this designation based on the quality of equipment they use. Solvent recovery pumps must have fire-compliant ratings; otherwise, the vapors will create an unsafe work environment. Additionally, manufacturers design decarboxylation reactors and centrifuges with fire safety in mind.

C1D2 in the Cannabis Industry

C1D2 tools in the cannabis industry usually include explosion-proof oil pumps and solvent evaporators. These machines can handle flammable liquids and gases while keeping them contained in sealed chambers.

Cannabis Production Safety Tips

Knowing about C1D1 and C1D2 guidelines is useless without practical ways to implement safety technology. Here are a few of the best cannabis production safety tips for manufacturers and extractors:

  • Ventilate extraction rooms. The extraction room is where all the solvents perform their work, creating vaporous by-products that could cause an explosion. While you cannot make ethanol or hydrocarbon inflammable, you can remove the hazard altogether. Ventilating these rooms will secure working conditions and prevent fire code noncompliance.
  • Install sensors for hazardous materials. The hazardous materials that cause spontaneous combustion and dangerous fires are difficult to detect—particularly invisible gases. The best way to detect these hazards is with fine-tuned sensors. As you install these tools, make sure you set them with calibration gas. This way, you know the sensors are working and accurate enough to detect dangerous concentrations of hazardous fumes.
  • Secure electrical housings. You must secure all electrical housings in your cannabis production facility. Without air-tight protection, wandering ethanol or hydrocarbon gases could mix the electrical flow and cause an electrical fire. The last thing you want is for your light bulbs or power outlets to produce dangerous flames.
  • Continually educate all staff. Aside from practical tools, it is not enough to simply implement a piece of equipment. You must educate all staff about your safety protocols and continually train technicians on their equipment. The more they understand about your business policies and complex machines, the less likely a workplace injury will occur—especially since most C1 problems stem from misuse or poor handling.

Understanding the differences between C1D1 and C1D2 guidelines can mean the difference between a successful, safe operation and a harmful, ineffective one. As you design, build, and fortify your cannabis extraction facility, make sure you incorporate the best machines on the market.

Without fire-code-compliant technology, you could be in trouble later down the road. Contact us today at Beaker & Wrench to learn more about our C1D1 and C1D2 certified equipment. We can help you find the perfect machines for your facility.

C1D1 vs. C1D2 Guidelines: Understanding the Differences

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