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Boat Fuel Tank - Pressure Testing
Posted on 9/7/17 at 5:16 pm
Posted on 9/7/17 at 5:16 pm
Anyone know where to get an metal fuel tank pressure tested in baton rouge? Tank is about 55 gallons. Not sure if tank is leaking or not. Thanks in advance.
Posted on 9/7/17 at 7:47 pm to Droplinebacker
What I did to test a 100 gallon tanks was set it off the ground about a foot. Fill it with water, then I used a piece of PVC piping that was 16' long and 2" wide, connected that to the fill and having it standing straight up and filled that with water. Been a long time, but if I remember right, a gas tank needs to be tested up to 6 psi. By going up that height with the pipe, that gave the tank a 8 psi head pressure.
Another way, fill the tank with water. Block off the fill. Hook up a line with a gauge and a air valve and hook up a compressor with a shut off valve. Bring the pressure up to 8 psi, close the valve and let it sit for a few hours.
By all means, this is NOT CG approve. But for you to feel safe, it will work. Also, if using a compressor, DO NOT go OVER 8 PSI.
Drain the tank of the water and add about a 1/2 gallon of Denature Alcohol when you fill it with gas. Also keep eye, drain any fuel filters as needed.
Another way, fill the tank with water. Block off the fill. Hook up a line with a gauge and a air valve and hook up a compressor with a shut off valve. Bring the pressure up to 8 psi, close the valve and let it sit for a few hours.
By all means, this is NOT CG approve. But for you to feel safe, it will work. Also, if using a compressor, DO NOT go OVER 8 PSI.
Drain the tank of the water and add about a 1/2 gallon of Denature Alcohol when you fill it with gas. Also keep eye, drain any fuel filters as needed.
Posted on 9/7/17 at 8:20 pm to fishfighter
The correct test pressure is 3 psi, which is about 7 ft of head.
Source: ABYC and CFR.
Source: ABYC and CFR.
This post was edited on 9/7/17 at 8:22 pm
Posted on 9/7/17 at 8:32 pm to Droplinebacker
I put an air compressor to my aluminum, took it up to 4psi, then covered the tank in soapy water, no bubbles, hasn't leaked
Posted on 9/7/17 at 9:31 pm to mohalk
quote:
Source: ABYC and CFR
Yep, do that
Posted on 9/7/17 at 10:45 pm to Boston911
That's good. Filling it any more is really pointless for checking leaks and will likely damage the tank, especially if it's 1/8" thick or less.
It's much safer to do a hydrostatic test with a head tube than filling with air. If you over pressurize a pneumatic test, a rupture will be much more violent.
It's much safer to do a hydrostatic test with a head tube than filling with air. If you over pressurize a pneumatic test, a rupture will be much more violent.
This post was edited on 9/7/17 at 10:47 pm
Posted on 9/8/17 at 6:30 am to mohalk
quote:
It's much safer to do a hydrostatic test with a head tube than filling with air. If you over pressurize a pneumatic test, a rupture will be much more violent.
This for sure.
Thanks guys for correcting me on the right pressure. Like I posted, it has been a long time ago I did a testing.
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