I'd just fill the sucker brim full with water and then take the 10"
angle grinder to it. Leave the valve cracked open to account for initial
thermal expansion of the water, but once you're through the side water
will leak out faster than it can expand.
I've done this with oil drums and refrigerant receiver tanks (oily
ammonia residue), no bang yet. But really I'd steer clear of propane
tanks, there are plenty of other things of similar size/shape that
didn't have an ubber flammable gas in it.
BTW the oily residue can and does explode, my shop teacher in high
school lost an eye that way, while teaching a class, thought the drum
was clean, but it still had a 1-2 molecule thick layer of engine oil on
the inside surfaces. The drum looked like a flower afterwards....
Thomas.
On 26/10/2010 10:14 PM, Brad Stogsdill wrote:
>
> Greetings-
> My procedure -
>
> 1. I opened my tank and let it sit updie down and blew air into it
> for several minutes to drive out any gas fumes.
> 2. It still stank and had oily residue in bottom so I put some water,
> gravel and a few drops soap in it and shook it and swirled it arounds
> and poured it out. repeated until it it came out pretty clean.
> 3. blew it out dry again with mouth open down to let out any possible
> vapors.
> 4. At this point I figured anything that would vaporize and burn was
> washed out and l then I chopped in half with a 10 inch grinding wheel.
>
> I dont know if the oily residue can burn or not but I felt better
> getting it out.
>
> Regards
> Bradley
>
>
> --- On Tue, 10/26/10, Ron Thompson <barebooger@cfl.rr.com
> <mailto:barebooger%40cfl.rr.com>> wrote:
>
> From: Ron Thompson <barebooger@cfl.rr.com
> <mailto:barebooger%40cfl.rr.com>>
> Subject: Re: [gingery_machines] Cutting Propane Bottles WAS:Re:
> Propane Foundry Questions
> To: gingery_machines@yahoogroups.com
> <mailto:gingery_machines%40yahoogroups.com>
> Date: Tuesday, October 26, 2010, 6:11 AM
>
>
>
> It will.
>
> Water positively displaces any residual propane. Remove the valve, fill
> it completely with water, dump it and cut by what ever means you choose.
>
> On 10/25/2010 10:57 PM, Thomas Kirby wrote:
> >
> > I would think that filling it with water would do the job.
> >
> > My blog: www.animalculture.org
> >
> > --- On Mon, 10/25/10, Clane Kaluna <gear@hawaii.rr.com
> <mailto:gear%40hawaii.rr.com>
> > <mailto:gear%40hawaii.rr.com>> wrote:
> >
> > Thanks David!
> >
> > A week, two weeks, a month, however long it takes. I didn't know that
> >
> > tip about the dry ice. I'd say I qualify as a coward myself hehe.
> >
> > Thanks Again,
> >
> > Clane Kaluna
> >
> > Honolulu, Hawaii
> >
> > [Non-text portions of this message have been removed]
> >
> >
>
> --
>
> Ron Thompson
> On the Beautiful Florida Space Coast, right beside the Kennedy Space
> Center, USA
>
> Sometimes you just gotta do what makes you smile.<GRIN>
>
> http://www.plansandprojects.com My hobby pages are here:
> http://www.plansandprojects.com/My%20Machines/
>
> Visit the castinghobby FAQ:
> http://castinghobbyfaq.bareboogerhost.com/
>
> [Non-text portions of this message have been removed]
>
> [Non-text portions of this message have been removed]
>
>
[Non-text portions of this message have been removed]
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