Hello All,

Do any of my fellow olde tymers have weight (or density) data for the various types of asbestos insulation that was used on power plant high energy piping systems in the past?

The Piping Hanbook, Fifth Edition, says the range is between 17 and 40 pounds per cubic foot, but Johns Manville people tell me it is about the same as Cal-Sil (I don't believe it).

This becomes important when a plant gets into asbestos abatement and replaces all their old asbestos insulation with the new stuff - the spring hangers have to be reset or replaced.

Thanks in advance for the data.

Best regards, John.