Re: Propane tanks

[Mike Young <tvcmikey@yahoo.com>]

Mike here,from Malaysia
While we were waiting for the Electric Boat people to finish up the
sub, I did notice that whenever they did any painting inside [a closed
hull]they used a blower for more than adequate ventilation, and
everyone wore a filter mask. Also, welding ops were suspended while
painting was going on. Another thing, different systems had different
colored pipes, so cover up what you don't want to paint a certain color
[They didn't]

FWAFS,
Mike

--- protek@shreve.net wrote:
>     I sprayed epoxy paint on the inside of my sub. 
> However, spraying
> inside an enclosed chamber is very tricky.  If you
> us any form of flamable
> vehicle you run a strong risk of fire or explosion
> from the large about of
> spray in the enclosed air volume.  When I had
> finished the inside hull, but
> before I added the end caps, I sprayed the inside. 
> It was open on both
> ends and I worked from both ends with the spraying. 
> I then welded the two
> end caps on after they were primed.  There are ways
> of keeping sparks from
> doing damage to existing paint during this process. 
> At this point I sanded
> and/or wire brushed the burned paint back from the
> weld on either side and
> coated the weld area with primer applied with a
> brush.  Then I painted the
> ends with a brush overlapping the existing paint. 
> This may sound tacky
> looking but it is not.  I do not think anyone could
> tell by looking from
> where you sit to drive my sub.
>     I was worried about explosion from static
> discharge inside the hull
> while moving around and spraying.  This was the
> reason for this technique.
> Also it was easier to get a good coverage over most
> of the inside.  I would
> not use oil based paint due to the drying period. 
> If I did it again in
> this manner, I would probably use acrylic urathane
> or some form of acrylic
> enamel.  But you need a good hood and vent system
> for breathing, so you
> will not get any of this material into your lungs.
> 
> Gary Boucher
> 
> 
> At 11:18 PM 4/6/99 -0400, you wrote:
> >Michael B Holt wrote:
> >
> >> What does one need to do to make the tank safe
> and/or clean enough to use
> >> as an inhabitable place?    Anything or nothing?
> >> Somewhere I read about (several) oil tanks used a
> pressure hulls.
> >> Apparently, they retain enough of the oil to be
> dangerous to humans,
> >> somehow.
> >> Any details or experience?
> >>
> >> Michael Holt
> >
> >Hi all,
> >Yes they need to be cleaned out good, unless you
> like the smell or want to
> >get sick.
> >I think I already outlined how I cleaned out the
> propane tank I used to build
> >my sub from. Check the archives? This is just one
> idea. You could use many
> >different kinds of solvents to get the worst of it
> out. I can't recommend any
> >"best" one. Then wash it out with a grease
> dissolving detergent and water.
> >Dry it and sand it, wire brush it, or sandblast it
> clean then prime it. After
> >painting the inside of my sub with a oil based
> metal paint, I have to say it
> >was a bad choice. Oil paint dries very slow and
> gives off a odor for over a
> >year. A friend of mine used an epoxy type paint and
> did not have as much of a
> >paint odor problem.
> >I know, let's ask Phil! Phil, what kind of paint do
> you use on the inside of
> >your subs? How long is the drying time before it is
> safe to occupy? Any body
> >else got any paint info?
> >
> >
> >
> 

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