Insulating oil regeneration and PCB destruction

Insulating mineral liquids can be regenerated to prolong their lifetime and avoid failure of the transformer. The regeneration removes unwanted degradation products from the oil. This paper gives a background to the effects of degradation products, transformer monitoring and ways of removing of unwanted products.PCB is discussed as a special case with a background to the legislation and health aspects. Oil management is considered from both legislative and health and safety view points.