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Home›Courses›Hazardous Materials & HAZWOPER›Cryogenics and Compressed Gas Safety Interactive Training

Cryogenics and Compressed Gas Safety Interactive Training

30 minutesENHazardous Materials & HAZWOPER29 CFR 1910.101 (Compressed Gases), 29 CFR 1910.104 (Oxygen), CGA P-1
Quick Answer

Cryogenics and Compressed Gas Safety is a 30-minute online course that covers the hazards, safe handling procedures, and emergency response protocols for cryogenic liquids and compressed gas systems. It addresses OSHA requirements under 29 CFR 1910.101 and 29 CFR 1910.104 and is designed for workers in laboratory, university, healthcare, and industrial settings. The course includes a downloadable certificate of completion.

Course Overview

Cryogenic liquids - gases cooled to extremely low temperatures and stored under high pressure - present a unique combination of hazards including severe cold burns, asphyxiation from oxygen displacement, and pressure-related explosion risks. Nearly 200 different types of gases are used in compressed form across industrial and research settings, and cryogenic variants such as liquid nitrogen (-320F), liquid helium (-452F), and liquid oxygen (-297F) require specialized handling procedures. OSHA regulations under 29 CFR 1910.101 through 1910.104 establish baseline requirements for compressed gas handling, and the Compressed Gas Association provides detailed guidance for cryogenic systems.

This course trains your employees on the specific hazards of cryogenic liquids and compressed gas systems, including proper handling of Dewar flasks and cryogenic containers, pressure relief requirements, ventilation for enclosed spaces, and personal protective equipment. Your team will learn how cryogenic liquids behave when they warm and expand to gas phase, understand the asphyxiation risks in confined or poorly ventilated areas, and follow the safety procedures that prevent cold burns, pressure buildup incidents, and oxygen-enriched atmosphere hazards.

What You'll Learn

  • Physical properties of cryogenic liquids and their expansion ratios from liquid to gas phase
  • Cold burn prevention and first aid for cryogenic contact injuries
  • Asphyxiation hazards from oxygen displacement in enclosed or poorly ventilated areas
  • Pressure buildup risks and the importance of proper venting and pressure relief devices
  • Safe handling of Dewar flasks, cryogenic containers, and transfer equipment
  • Storage requirements including ventilation, separation, and container inspection
  • Personal protective equipment including cryogenic gloves, face shields, and protective clothing
  • Emergency procedures for cryogenic spills, leaks, and container failures

Who Needs This Training

  • University and research laboratory workers who handle liquid nitrogen, helium, or argon
  • Healthcare facility staff who manage cryogenic storage systems for biological specimens
  • Industrial gas distribution and delivery personnel
  • Manufacturing workers in semiconductor, metalworking, and food processing operations using cryogenic gases
  • MRI suite technicians who work with liquid helium cooling systems
  • Maintenance technicians responsible for cryogenic piping and storage equipment

Regulatory Background

OSHA regulates compressed and cryogenic gases through several standards: 29 CFR 1910.101 covers general compressed gas requirements, 29 CFR 1910.104 addresses oxygen systems specifically, and the General Duty Clause applies to cryogenic hazards not covered by specific standards. The Compressed Gas Association's CGA P-1 pamphlet, incorporated by reference in the OSHA standard, provides detailed handling and storage guidance for both compressed and cryogenic gases. Facilities that use large quantities of certain gases may also be subject to Process Safety Management at 29 CFR 1910.119 and the EPA's Risk Management Program. OSHA cites employers for improperly stored cryogenic containers, inadequate ventilation in areas where cryogenic gases are used, failure to provide appropriate PPE, and lack of employee training. Serious violations carry penalties of up to $16,550, and incidents resulting in employee injury from cryogenic exposure often lead to investigations that uncover multiple violations.

Frequently Asked Questions

Cryogenic liquids expand dramatically when they warm to gas phase - liquid nitrogen, for example, expands approximately 694 times its liquid volume. A relatively small spill in an enclosed or poorly ventilated room can rapidly displace enough oxygen to create an immediately life-threatening atmosphere. Normal air contains approximately 20.9% oxygen; levels below 19.5% are considered oxygen-deficient by OSHA, and levels below 16% can cause impaired judgment and coordination. Several fatalities have occurred in research settings when liquid nitrogen was released in rooms without adequate ventilation or oxygen monitoring.
Workers handling cryogenic liquids should wear loose-fitting cryogenic gloves that can be quickly removed if liquid spills inside them, a full-face shield or safety goggles, a long-sleeved lab coat or protective apron, and closed-toe shoes. Pants should be worn outside of boots or shoes so that spilled liquid cannot collect inside footwear. Standard leather or cloth gloves are inadequate for cryogenic temperatures and should not be used. For operations involving large quantities or transfer operations, additional body protection may be necessary.
Cryogenic containers must be stored in well-ventilated areas to prevent oxygen depletion from normal boil-off. They should never be stored in sealed rooms, closets, or other enclosed spaces without mechanical ventilation and oxygen monitoring. Containers should be kept upright, on level surfaces, away from heat sources, and protected from physical damage. Pressure relief devices must never be blocked or tampered with. Indoor storage areas should have oxygen monitors with alarms set at 19.5% oxygen concentration.
A compressed gas cylinder stores gas under high pressure (typically 2,000 to 2,640 psi) at ambient temperature in a heavy-walled metal container. A Dewar flask stores liquefied gas at very low temperature and relatively lower pressure in a double-walled, vacuum-insulated container. Dewars have pressure relief valves that vent gas as the liquid slowly warms, and they must never be sealed completely. Both require proper handling, but the hazards differ - cylinders primarily present pressure and projectile risks, while Dewars present cold-burn and asphyxiation risks in addition to pressure concerns.
OSHA does not have a specific standard requiring oxygen monitors in all cryogenic work areas, but the General Duty Clause obligates employers to protect workers from recognized hazards, which includes oxygen depletion from cryogenic gas release. Industry best practice and CGA guidelines recommend continuous oxygen monitoring with audible and visual alarms in any enclosed or semi-enclosed area where cryogenic liquids are stored, transferred, or used. Many universities and research institutions require oxygen monitoring as a standard safety measure in cryogenic work areas.

Related Courses

Employers training their teams on cryogenic safety often pair this course with Compressed Gas Cylinders - Handling and Storage for comprehensive coverage of both standard and cryogenic compressed gas systems, and with Laboratory Safety: Safe Work Practices for research settings where cryogenic liquids are commonly used alongside other laboratory hazards.

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$29.95
per person
Volume Pricing
Team Size Price per Person
1 - 9$29.95
10 - 24$23.95
25 - 49$21.55
50 - 99$17.50
Subtotal $29.95

Certificate of completion included. Downloadable upon passing the final assessment.

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$29.95
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