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By James Roberts
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A growing number of industries now depend on compressed gases and cryogenic fluids to manufacture semiconductors, launch spacecraft, preserve food, deliver healthcare, and support advanced research. That dependence is expected to grow, with a report by Grand View Research projecting the global compressed gas market to reach $6.2 billion by 2030. Yet outside the engineers and technicians who work with these systems every day, few people understand how quickly an invisible gas release can become a life-threatening emergency.
That knowledge gap is becoming more consequential as industrial facilities expand, production becomes more sophisticated, and fire codes continue evolving to address hazards that were once overlooked. Many organizations invest heavily in sophisticated equipment, but the safe movement, monitoring, and management of industrial gases often receive far less public attention despite carrying equally significant consequences when something goes wrong.
Investigations into industrial gas incidents often reveal that the hazard itself was only part of the story. More commonly, multiple routine failures converge, whether through inadequate monitoring, incomplete system design, overlooked maintenance, or gaps in emergency preparedness. On their own, each issue may appear manageable. Together, they can create conditions that escalate rapidly before anyone recognizes the danger.
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A deadly industrial accident can begin with equipment that has operated normally for years. A final investigation report by the U.S. Chemical Safety and Hazard Investigation Board shows that in January 2021, an uncontrolled liquid nitrogen release at a Georgia poultry plant killed six workers and seriously injured four others. The board later found that the facility lacked adequate monitoring systems, warning alarms, and emergency training.
For Jef Frick, founder of Safe Gas Systems, the tragedy illustrates why compressed gases and cryogenic fluids must be treated as an integrated facility risk rather than a routine utility.
Frick says the first challenge is helping owners understand that different gases create different hazards. Nitrogen can displace oxygen and create an oxygen deficiency hazard, commonly known as ODH. Carbon dioxide can also displace oxygen, but elevated carbon dioxide concentrations can become life-threatening before oxygen levels fall enough to set off a conventional oxygen-deficiency alarm.
The National Institute for Occupational Safety and Health places carbon dioxide’s immediately dangerous to life or health concentration at 40,000 parts per million.
“Monitoring carbon dioxide with an oxygen sensor can create a false sense of security,” Frick says. “The gas may reach a dangerous concentration before oxygen falls far enough to trigger the alarm. The detection system has to match the specific gas and the way it behaves inside that facility.”
That distinction matters across aerospace plants, hospitals, laboratories, breweries, food-processing operations, and other facilities that store or distribute gases. Safe Gas Systems, founded in 2014, provides consulting, engineering, field services, gas detection design, cryogenic systems, piping, controls, inspections, and training. Frick explains its role as connecting the gas source, distribution infrastructure, detection equipment, ventilation, shut-off controls, and operating procedures into one safety strategy.
According to Frick, placing sensors without first studying airflow may leave important areas unprotected. His team conducts airflow studies using smoke selected to behave similarly to the gas being evaluated. The movement of that smoke helps determine where vapors may collect under different operating conditions and where detection points should be installed.
“The sensor is only useful when it is positioned where the gas will travel,” he explains. “Facility geometry, ventilation, equipment, doors, temperature, and operating conditions can all change that answer. Detection design should be based on evidence from the space.”
Cryogenic liquids add another layer of complexity because a small volume of liquid can expand into a much larger volume of gas as it warms. Frick notes that liquid nitrogen used for cooling may leave processing equipment with extremely cold vapor. That vapor can cool exhaust piping and cause atmospheric moisture to freeze on interior and exterior surfaces, adding weight and creating maintenance or structural concerns.
Frick believes these examples show why safety planning should begin while a facility is being designed or modified. Owners, architects, engineers, contractors, equipment suppliers, and gas specialists may each control one part of a project. He argues that someone must also examine how those parts operate together, including future expansion, maintenance access, alarm response, ventilation, and employee training. That broader review can also reveal operational consequences that may otherwise remain invisible until condensation, ice, pressure, ventilation, or maintenance problems disrupt the facility.
Codes are bringing greater attention to these questions. Frick participates in the technical committee work surrounding NFPA 55, the code covering compressed gases and cryogenic fluids. He says code development allows lessons from incidents and field experience to influence facilities beyond the projects his own team can reach.
Still, compliance alone does not guarantee readiness. Frick regularly encounters alarms treated as obstacles because they interrupt operations, although an alarm may be identifying the condition it was installed to detect. He says systems also require maintenance, clear response procedures, and employees who understand why bypassing a safeguard can turn several unlikely failures into one preventable emergency.
“Most serious incidents are not caused by one extraordinary event,” Frick says. “Several ordinary problems line up on the same day, and suddenly, the protections people assumed were there are gone. The responsible time to examine a gas system is before those conditions align, because safety cannot depend on how long luck lasts.”
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