I have been a little alarmed by some suggestions on this site regarding the opening up of components. Warnings in particular relate to power transistors, oil filled transformers, and oil filled capacitors.
Many power transistors, especially those manufactured in the 60's-70's and those from ex eastern block countries, contain a material called Beryllium. Either beryllium copper or Beryllium Oxide. This is used because it has very good thermal conductivity, and the Oxide is also a good insulator.
The danger comes from sawing or grinding open a device containing this material as very small quantities are LETHAL if inhaled. I think it only takes a few micro grams to be fatal.
The problem with the oil filled transformers and capacitors is P.C.B's. Although now outlawed, a lot of older ex equipment transformers and capacitors used Polychlorinated Biphenyals. This is highly Carcinogenic and and should not come into contact with your skin or the vapour be inhaled. ( The same way that a tissue can soak up water, the skin is able to absorb many liquids.)
My advise is do not open up ANY component unless you are absolutely sure it doesn't present a hazard by doing so, and if you decide then it's ok, do it in a safe area and dispose of the remnants properly.
Also remember that if you vacuum up hazardous dust, it can get into the air either by passing though the filter, or when you empty the container.
If you are not sure, then post a question on here for proper advice. Please take care folks!!!
Many power transistors, especially those manufactured in the 60's-70's and those from ex eastern block countries, contain a material called Beryllium. Either beryllium copper or Beryllium Oxide. This is used because it has very good thermal conductivity, and the Oxide is also a good insulator.
The danger comes from sawing or grinding open a device containing this material as very small quantities are LETHAL if inhaled. I think it only takes a few micro grams to be fatal.
The problem with the oil filled transformers and capacitors is P.C.B's. Although now outlawed, a lot of older ex equipment transformers and capacitors used Polychlorinated Biphenyals. This is highly Carcinogenic and and should not come into contact with your skin or the vapour be inhaled. ( The same way that a tissue can soak up water, the skin is able to absorb many liquids.)
My advise is do not open up ANY component unless you are absolutely sure it doesn't present a hazard by doing so, and if you decide then it's ok, do it in a safe area and dispose of the remnants properly.
Also remember that if you vacuum up hazardous dust, it can get into the air either by passing though the filter, or when you empty the container.
If you are not sure, then post a question on here for proper advice. Please take care folks!!!
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