I'm a mechanical engineer..My father works at one of the nitrogen filling stations nearby..I always wanted to know how these things work myself.. I've searched alot about nitrogen filling and safety but this video is the best of all videos that I've seen...Thank you guys for such a beautiful explanation of everything....Good luck😊
Great video covering the safety issues using liquid Nitrogen. Most ice cream operators or franchises will not discuss issues such as "burns" as they want to maintain the image of fun.
I want to mention one error. at 3.55 they say to not cover, tape or plug a pressure relieve valve. True although the port pointed to in the video is not a pressure relief valve, it's a vacuum port which should be covered to protect the vacuum from being disturbed. All I ask is that you point to the right part.
should the room storing LN2 have ceiling exhaust or low level exhaust one says ceiling exhaust as nitrogen is lighter than oxygen to so extract effectively at high level; another says the when accidentally pouring some LN2 on the floor, low level exhaust can exhaust out nitrogen which is just been vapourized, not letting them even have chance to reach mid/high level of the room
very informative, learned a lot. specially about safety, relief valve importance, and gas transfer diagrams. any information about rebuilding a Dewar please, in some of our containers we have noticed a vacuum break due to aging of o-ring in the double walls . i have a roughing vacuum pump plus diffusion pump
4:02 Am I to assume that any pressure relief valve doing its intended job, should result in folks running away to call 911 ("emergency services")? These valves blow off a small amount of gas 8-10 times a day. A person can hear it, see it and because that gas is so cold there may be some frost formation....wait for it.....run for your lives!!! I have filled, delivered and serviced thousands of LN2 tanks and feel that this video gives enough good information to be worth watching but also includes enough bad information to cause problems.
I have been working with liquid nitrogen for 5 years now with no formal training. 4:03 is a bit worrying, the pressure release valve is always freezing open and venting into the workspace.
