boiler is cover with layer of asbestos why.
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Boilers and Asbestos Exposure. Boilers and the piping networks they're connected to are heavily insulated to prevent heat loss and increase steam system efficiency. In the past, this insulation was made from asbestos.
Asbestos was often used in insulation for boiler pipes to reduce energy costs and prevent fires. Asbestos insulation looks like corrugated cardboard and was wrapped around boiler pipes. ... that's why you'd find at least a 1-inch layer of asbestos concrete around a boiler
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