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Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. It is used in oil-filled wet transformers, [ 1 ] some types of high-voltage capacitors , fluorescent lamp ballasts , and some types of high-voltage switches and circuit breakers.
One of the largest deliberate PCB spills in American history occurred in the summer of 1978 when 31,000 gallons (117 m^3) of PCB-contaminated oil were illegally sprayed by the Ward PCB Transformer Company in 3-foot (0.91 m) swaths along the roadsides of some 240 miles (390 km) of North Carolina highway shoulders in 14 counties and at the Fort ...
As transformer oil deteriorates through aging and moisture ingress, transformer oil should, depending on economics, transformer duty and other factors, be tested periodically. [5] Electric utility companies have a vested interest in periodic oil testing because transformers represent a large proportion of their total assets.
An oil sample tube is used to draw, retain and transport the sample of transformer oil in the same condition as it is inside a transformer with all fault gases dissolved in it. It is a gas tight borosilicate glass tube of capacity 150 ml or 250 ml, having two airtight Teflon valves on both the ends. The outlets of these valves have been ...
Soil is contaminated by VOCs and waste oil degradation products and there is a highly concentrated non-aqueous phase layer. [34] 04/01/1997: 03/06/1998: FLD050432251: Florida Steel Corp. Martin: Soil was contaminated by lead, zinc from disposal of dust filtered from the air in the mill and by PCBs from hydraulic fluid leaks.
Eight members of the OPEC+ alliance of oil exporting countries decided Thursday to put off increasing oil production as they face weaker than expected demand and competing production from non ...
The purpose of the Warren County PCB landfill, as the public knew it, was to bury 60,000 tons of PCB-contaminated soil that had been contaminated with toxic PCBs between June and August, 1978, by Robert J. Burns, a business associate with Robert "Buck" Ward of the Ward PCB Transformer Company of Raleigh, North Carolina. Burns and his sons ...
OPEC+ faces a major oil oversupply in 2025, challenging production increases. The coalition has tried to boost oil prices by holding back output. Instead, members are ceding control to non-OPEC ...