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Damn Jim, 1200 PSI, in a welded tank!!!!!!!!!
If you tied that tank to your motor cycle and
the end cap blew, even you couldn't do the ride. No need to test much over
what the tank will be used for, just to see if you have a leak. Testing to
destruction can be VERY destructive.
One note on the subject of using pressurized
fluid to test a container.
Be sure to fill it totally with water and avoid any
air pockets to minimize the energy stored. But, even full of fluid, it can
cause a lot of damage if it fails. There's considerable energy stored in
the steel as it expands, even a little bit, under high pressure.
Jim, you already got all the BRASS you need to
test dive your sub. ;-)
Be careful, Dan H
----- Original Message -----
Sent: Wednesday, November 19, 2008 7:57
AM
Subject: [PSUBS-MAILIST] Ballast
Tanks
Hi Dan H,
Thanks again for the tip on using pressure washer
for pressure testing. I only have completed testing one so far, but at 1,200
PSI no pinholes and no endcaps blowing off.
I did have some leakage at the threads, but they
are deformed from welding and I have not finished taping them because I wish
to coat the inside with epoxy prior to getting cutting oil contamination on
the inside surfaces.
I did have one funny screw-up. I for got to put a
blow-off valve to relieve the pressure so I guess I'll have to carefully
partially loosen a fitting and allow it to bleed down as the quick couplers
will not uncouple with pressure inside.
Best Regards,
Jim K
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