this post was submitted on 17 Feb 2025
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How do I shrink heatshrink in an explosion proof room? (lemmy.dbzer0.com)
submitted 4 days ago by Canonical_Warlock@lemmy.dbzer0.com to c/askelectronics@discuss.tchncs.de
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So I'm not sure what the right community for this is but I'm hoping yall can help. I'm a refrigeration service tech and recently I was tasked with replacing a sensor in a room used to store ethanol drums. Due to the nature of the room every device in it had to be rated explosion proof and I couldn't use any tools that could pose any risk of ignition (no heat gun, basically nothing with an electric motor, and definitely no open flames) while working in there. Normally when I splice wires I use heatshrink to cover the splice simply because it looks far more professional than electrical tape and it holds up better over time. However in this case I could not figure out any way of shrinking said heatshrink without posing a potential ignition hazard so I was stuck just wrapping the splice in tape. We do a lot of work for this company so I'm hoping to find a better solution for the next time I am in a similar situation.

So do any of you know any way to shrink heatshrink without posing an ignition hazard or am I stuck just using tape in those situations?

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[–] ignirtoq@fedia.io 2 points 4 days ago

The options from other responses are better (gel, cold shrink tubing), but just for your edification, sand in a box can work as an extremely effective insulator for a short period. So heat up the soldering iron and stick it in a bed of sand in a box to take it in with you. Most of the heat won't escape the box, but it will spread through the tool, so you'll definitely want gloves.