Probably had one. Given the number of fatalities and injuries, my guess was that it was a huge liquid leak that quickly overwhelmed anyone nearby. O2 sensor would have been useless. Only takes one brather and you go down. Since liquid N2 is cold the vapors will be at ground level where they are. Am trying to get details on this incident

Eugene Ngai

Chemically Speaking LLC

www.chemicallyspeakingllc.com

How much does an oxygen sensor/alarm cost? -- Pete

Wow.  https://abcnews.go.com/US/wireStory/liquid-nitrogen-leak-georgia-poultry-plant-kills-75543081

GAINESVILLE, Ga, -- A liquid nitrogen leak at a northeast Georgia poultry plant killed six people Thursday, with multiple others taken to the hospital, officials said.

 

At least three of those injured at the Foundation Food Group plant in Gainesville were reported in critical condition.

 

Poultry plants rely on refrigeration systems that can include liquid nitrogen. Firefighters, the U.S. Occupational Safety and Health Administration and the state fire marshal were investigating the cause of the leak.

 

"It was a leak of unknown cause that has occurred in the system here," Hall County Fire Department Division Chief Zach Brackett said. "We still have a lot of information we're trying to gather from the scene."

 

Foundation Food Group Vice President for Human Resources Nicholas Ancrum called the leak a tragic accident and said early indications are that a nitrogen line ruptured in the facility.

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