Propane haulers
Discussion in 'Hazmat Trucking Forum' started by Badmon, Dec 25, 2020.
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Dale thompson and blairandgretchen Thank this. -
Okay if i have an emergency and #### is leaking like mad and i need to shut down my valves on either end, trailer or storage tank end, walk me through what you would do. Im curious how long youve been doing it and how many times youve been burned
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Shut it off at the source, the trailer( or truck) A leak of any kind is usually pretty serious stuff.
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Ive just started doing transport in a 18 wheeler. The other day it was rainy and cold and after unloading and while bleeding off the tank, for the first time i noticed the cloud shoot up out of the little bleeder tube and come tf back down and surround the back end of my trailer. Scared my drawers brown just to find out that it does that every time, you just cant see it every time. Not to mention by the time i was done the entire pipe on the storage side right up underneath the wheel valve was frosted over. Of course all of my connections were tight, it was the plant's end of things that had the slight leak. Yikes
RockinChair Thanks this. -
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2. Stop the leak as far as possible upstream at the source.
If the leak is on your trailer, activate the emergency shutoff on the trailer, there's one on the back right and one at the front left. If your internals are air-operated you will either flip a switch or turn a valve handle. If your internals are cable-operated there will be a handle for you to pull.
If the leak is on the customer's side then go throw the little switch (or plunger) that opens and closes all the vapor-actuated valves in the customer's piping.
3. Block-in all of the other valves that you opened in order to unload.
The colder it is outside, the more condensation you will see coming out the back when you open the bleeder. If your customer is fussy about it then just open the bleeder a little bit so that the cloud won't be quite so big. -
MrJoop and RockinChair Thank this.
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Every time you finish loading or unloading there’s pressure in the hose between the valves that must be released before disconnecting. Frosted lines are normal pay attention to the tank temperature and outside ambient temperature and always pay attention to wind direction when unloading ( this is really important when hauling NH3 ) sometimes there is some liquid in your hose which makes a bigger vapor cloud when blowing off.
RockinChair, Badmon and wis bang Thank this. -
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