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Hi Vance, I would love to have more practical oilfield
experiences on the dome sealing or installation practices from you. What type of grease, What fit / clearances were they on
diameter. What type of domes 90 – 120 degree
or 180 degree. Where were the O’rings placed? What material were they using for the
gasket/dome face etc. How were the vacuum tests done. (Ie I cant
imagine people sitting inside with soapy water in a vacuum. ) This sort of information is like gold.
How can we get hold of operations manuals
for some of these things? Listening hard to your experiences,
Thks, Hugh From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of vbra676539@aol.com Quite useful. We always
used a vacuum test to verify hull integrity after working on penetrations or
hull seals on one of the oil field boats. Also, it's the best way to install
one of the big dome segment viewports! Grease the mating surface, have two or three
people stand the thing in place, lean on it while the vacuum takes hold, and
then install at your leisure (while running the pump continuously, of course). Hi Jens. That's right. A "
perfect" vacuum is not possible, and that method would have limited use as
an indicator of hull strength. It is fairly inexpensive though, and would ,
like you said, be useful in checking for leaks. Frank D.
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