Originally Posted By: Merkava_4
Originally Posted By: demarpaint
+1 Oil is not environmentally friendly when it sinks into the ground or finds its way into the waterways.
What if it's made out of bacon fat?
Company that I worked for in 1990 built a 500KV substation, and had the transformer bunds linked to an oil catch tank, and an oily water separator to trap the oil should a transmission fail.
Fire protection water would be flowing through as well, so they had to have the oily water separator sized to remove and keep the oil IN, while letting the water out (application of Stokes' Law).
To comply they needed to test it with full water volume, and a full charge of oil (10,000gal or so)...no-one was going to do that with transformer oil.
So they used vegetable oil, as it was biodegradable.
However, if it DID fail they broke the law, as an oil spill was an oil spill, and bad when it suffocated fish and aquatic organisms.