Nitrogen Safety Training

Nitrogen Safety Training

Attached is a document that can help guide you in your Nitrogen Safety training. You may use this document to keep handy in your store and to help you train your employees in your store(s).

1.   Nitrogen Facts

Go over each of these facts with your employees

●     Nitrogen makes up around 78% of the atmosphere

●     Liquid nitrogen is -321 degrees Fahrenheit

●     Nitrogen becomes solid at -346 degrees Fahrenheit

●     Nitrogen is a chemical element with the symbol N and the atomic number 7

●     Nitrogen is a colorless, odorless, and tasteless gas

●     Nitrogen is the 5th most abundant element in the universe

●     The human body contains about 3% nitrogen

●     Other uses for nitrogen include fertilizers, cryogenics, fuel systems, explosives and production of electronics.

1.   Nitrogen Terms

Make sure that each employee knows where each item on this list is located in the store, how it works, and how to operate it.

●     Main safety valve

●     Electronic Valves

●     Phase separator

●     Oxygen monitor

●     Vent

●     Pressure builder

 

2.  Nitrogen Risks

Explain to each employee what the 3 risks are when working with liquid nitrogen Explain to each employee what Sub Zero does to keep employees safe from these risks

Ask each employee if they have any worries or concerns about working with liquid nitrogen and address them accordingly.

3.   Sub Zero Rules and Regulations

Go over each of the rules and regulations, explain to employees that breaking any of these rules will result in immediate termination. Tell them of any demonstrations that may be able to learn to entertain customers with.

●     Never, under any circumstances, give Liquid Nitrogen to customers.

●     Never, under any circumstances allow nitrogen come in contact with the customers.

●     Never, under any circumstances try to put nitrogen into any container not built to contain nitrogen.

●     Never use liquid nitrogen for any other purpose than freezing ice cream.

●     Never take liquid nitrogen off the premises.

●     Be knowledgeable about Liquid Nitrogen. Customers are naturally curious about our process, and particularly the Liquid Nitrogen. They will have questions, and even concerns. Be informed and ready to enthusiastically answer them.

●     There are some fun demonstrations you can do with liquid nitrogen for the customers or groups on a field trip, and your manager will know of these. Do not do any demonstrations without prior training and permission for your manager.

 

 

 

4.   Nitrogen issues and procedures

Print off this section of the manual to post in the store, show each employee where it is located.

Every employee should know that the first response to anything regarding nitrogen flowing uncontrolled will be to contain the flow of the nitrogen both by placing a bowl under the nozzle to keep it from spilling on the counter, followed by manually closing the main safety valve to completely stop the flow of nitrogen until they can figure out what the problem is and the steps that they need to follow to fix it.

 

Leaking Piping: If there is any smoke or liquid leaking out of any part of the nozzle or piping.

1.       Contain the leak, place something under the leak to contain the nitrogen from spreading

2.       Close the main safety valve on the tank

3.       Open the electronic valve to empty piping of nitrogen

4.       Use a wrench to tighten the area that it was leaking from

5.       Open the main safety valve

6.       If it is still leaking call your manager/owner

Leaking Valve: Nitrogen leaking out of the nozzle when the electronic valve is closed.


1.       Contain the leak, place something under the leak to contain the nitrogen from spreading

2.       Close the main safety valve on the tank

3.       Open the electronic valve to empty the piping of nitrogen

4.       Call your manager/owner and let them know what is happening


Manager/Owner- Have the employees wait a few minutes and then open the main safety valve to see if the electronic valve will unstick itself. If it does you can continue using the valve but consider replacing it soon as it will normally continue doing this. If the valve does not fix itself then it will need to be replaced right away. If you need to serve customers while the valve is broken you can use the main safety valve to stop and start the flow of nitrogen.

 

Diffuser Comes Off: The diffuser comes unscrewed and comes off the nozzle

1.       Stop the flow of nitrogen with the electronic valve

2.       If the diffuser fell into an ice cream wash off thoroughly and follow the steps for a wet diffuser

3.       Screw the diffuser back into place

 

Diffuser Gets Wet: When the diffuser gets wet the water on it will freeze and clog the holes so nitrogen will not be able to come out.

1.       Unscrew the diffuser

2.       Thoroughly dry the diffuser

3.       Once there is no water on it you can screw the diffuser back on the nozzle

4.       DO NOT OPEN THE ELECTRONIC VALVE WHILE THE DIFFUSER IS NOT ATTACHED

 

Diffuser Breaks: The tip of the diffuser breaks off


1.       Stop the flow of nitrogen using the electronic valve

2.       Unscrew the diffuser

3.       Call your manager to report the incident

4.       Replace with a new diffuser


 

Oxygen Monitor Goes Off: The oxygen monitor starts beeping signifying that there is below the recommended amount of oxygen in the room


1.       Stop dispensing nitrogen

2.       Open all the doors leading outside to allow oxygen to enter the room

3.       If oxygen levels continue to drop, clear the room

4.       Once the monitor stops beeping the room is safe, there are no residual effects

High Pressure on Tank: The nitrogen will be coming out faster than normal and may splash out of the bowl


1.       Check the pressure on the tank

2.       The pressure should be between 25-40 psi

3.       If the pressure is above 40 psi open the vent to relieve the pressure

4.       Once the pressure is back in the proper range close the vent


 

 

 

Low Pressure on Tank: The nitrogen will be coming out slower than normal


1.       Check the pressure on the tank

2.       The pressure on the tank should be between 25-40 psi

3.       If the pressure in below 25 psi turn the pressure builder on

4.       Once the pressure is back in the proper range turn the pressure builder off


 

 

If there are any issues not covered on this list, or if following the instructions doesn’t fix the problem call corporate immediately.

Jerry Hancock C: 801-319-7859 Naomi Hancock: 801-472-2964




Make sure that each employee signs the receipt page, and keep it on file.





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