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Old 12-01-2019, 06:19 PM   #1
Davy
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Cutting open an early monster tank advice

Ive a spare original early 900 monster tank which has been lined in the past, Iíve tried a few different methods/ solutions to clean it out but nothing works so far.. although Iíve been reading MEK will soften the lining enough to let me get it out. I will try that before I do anything else..
anyway would it could it work if I cut a large panel out of the underside to get at it and clean it out. Then get the panel I cut out welded or braised back in place.
I canít seem to get my pics to load. I use postimage as before but for some reason it just wonít work .
Anyway is it crazy or doable?
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Old 12-01-2019, 06:46 PM   #2
chris.p
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Contact these guys for advice.

https://www.rust.co.uk/product/slosh...ol-tank-seal-7
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Old 12-01-2019, 07:46 PM   #3
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Will call them regarding their AS10 to see if that will do my job instead of cutting it open. But with some of these chemicals the sellers won’t ship to Ireland.
Thanks I’ll keep you posted.
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Old 12-01-2019, 09:17 PM   #4
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Warm sulfuric acid works quite well with the slow cure, high strength epoxies which are what pretty much all the tank liners are.
Also worth considering are toluene, NMP (n-methly-pyrollidone) and MEK (methyl-ethyl-ketone) which are all fairly nasty chemicals and you want to do use them in a very well ventilated space.
Thermal shock also will work but you probably don't want to get the tank that hot and then quench it in cold water (usually needs a few cycles).
It will burn off but can need up to 400C and I've heard that you can use high temperature steam.
The tank will still need lining with something as the inevitable ethanol in fuel will cause water to accumulate in the base of the tank and eat through eventually.
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Old 13-01-2019, 05:59 PM   #5
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A lot of food for thought there. Ok so il try and get my hands on some MEK first then take it from there.
BUT anyone any advice pros cons of cutting it open?
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Old 13-01-2019, 09:10 PM   #6
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Only that if you cut it you've got to shut it.
The only problem I can see is down to the shape of the tank, there isn't really a good place to make a decent sized hole to get access, and I'm not sure how helpful that would be given that the best removal is going to be by using liquid solvents.
If you do cut the tank make sure you have a welder who can do a decent job sticking it back together again.
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