When dumping lye from plastic bags into the methanol mixing tank I have noticed some evidence of static electricity. The beads of lye will dance around a little and cling to the bag. Recently after dumping a bag I touched the small metal tank lid to close it and I got a good zap of static. Nothing bad happened that time. I now will always touch the metal frame somewhere away from the lid before touching the lid. Or I could clip a ground wire to my ear. I wonder if you can buy gold alligator clips. Live and learn.
Here are some good best practices to avoid static arcs as well.
Another tip to avoid feeling a whack from the static shock is to hold a key or other metal object and then touch it to the grounded metal, the arc will discharge through the metal and you wont feel it at all.
Simple schematic for a pump and heater control with a high limit
Sensor for the biodiesel/glycerin layer
It's fun to do that on a cats' nose.
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