SOHC Posted October 19, 2012 Share Posted October 19, 2012 I have a diesel tank with a small gash in it, I have drained and removed the tank, I was wondering is it safe to weld or will it explode? I havent played with diesel ever. When I didn't know much I welded a petrol tank witch I had washed out with water but it exploaded and split open down the seam, it was like getting hit by a train Quote Link to comment Share on other sites More sharing options...
Simon Posted October 19, 2012 Share Posted October 19, 2012 You don't need to worry about explosions. The worst it will do is catch fire. You do need to make sure the welding surface is 100% clean of diesel though. Quote Link to comment Share on other sites More sharing options...
SOHC Posted October 19, 2012 Author Share Posted October 19, 2012 It will soon burn off, Quote Link to comment Share on other sites More sharing options...
drftnmaz Posted October 19, 2012 Share Posted October 19, 2012 i'd be tempted to wash a little bit of petrol around in there, then do the exhaust pipe trick for 5mins to be safe... i've never tried a diesel tank tho Quote Link to comment Share on other sites More sharing options...
SOHC Posted October 19, 2012 Author Share Posted October 19, 2012 Just been reading about the exhaust pipe trick, I think it will make it even safer being diesel. Quote Link to comment Share on other sites More sharing options...
mjrstar Posted October 19, 2012 Share Posted October 19, 2012 if you have a welder why not have a slow purge with inert gas whist carrying out said weld. maybe 8-10 litres / min of CO2 or suchlike? Beats a repeat fireball?? Quote Link to comment Share on other sites More sharing options...
SOHC Posted October 19, 2012 Author Share Posted October 19, 2012 I was going to weld it with the oxy acetylene, I could purge it with the MIG welding gas and let it flow in wile welding like you say, probley the best way Quote Link to comment Share on other sites More sharing options...
eke_zetec_RWD Posted October 19, 2012 Share Posted October 19, 2012 diesel pretty safe, iv done quite a few alloy tanks still half full. if your real worried just perge it. Quote Link to comment Share on other sites More sharing options...
SOHC Posted October 20, 2012 Author Share Posted October 20, 2012 Did it, I purged it with Supamix, nothing exciting happend, it didn't ever burn, there was vapour comming out witch wouldn't even catch fire. Thanks everyone for the help. Quote Link to comment Share on other sites More sharing options...
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