Understanding Gas Hazards In Your Cooler

None of us usually consider the dangers associated with the use of gases present in a bar or restaurant. Specifically in an enclosed space, like a walk in cooler. It's easy to forget about until you have a problem.

What hazard, it's gas? Co2 and Nitrogen (N2) are both colorless, odorless gasses, exist naturally in our atmosphere, and are non-toxic. The hazard lies with using them in an enclosed space, where concentrated levels can occur. Co2 is denser than air, and in concentrated levels, displaces the Oxygen we breathe. Instead of poisoning, it causes asphyxiation. You're essentially drowning....

Normal CO2 Levels

The effects of CO2 on adults at good health can be summarized to:

• normal outdoor level: 350 - 450 ppm

• acceptable levels: < 600 ppm

• complaints of stuffiness and odors: 600 - 1000 ppm

• ASHRAE and OSHA standards: 1000 ppm

• general drowsiness: 1000 - 2500 ppm

• adverse health effects may be expected: 2500 - 5000 ppm

• maximum allowed concentration within a 8 hour working period: 5000 - 10000 ppm

• maximum allowed concentration within a 15 minute working period: 30000 ppm

Extreme and Dangerous CO2 Levels

• slightly intoxicating, breathing and pulse rate increase, nausea: 30000 - 40000 ppm

• above plus headaches and sight impairment: 50000 ppm

• unconscious, further exposure death: 100000 ppm

If you experience drowsiness, dizziness, and a feeling of panic, leave the area and seek fresh air.

Cover Your Liabilities!

Protect yourself and your staff! Advise them of a potential gas hazard with OSHA compliant warning signage clearly posted at walk in cooler, and bulk gas storage areas. Or, consider installing a Co2 level alarm system in the area. Signs are inexpensive, alarms are more of an investment, but covering your liabilities, and advising of potential hazards at the workplace could save you big money in the event of a mishap.