Fiber-releasing materials

Thermal system applications include steam or hot-water pipe coverings and thermal block insulation found on boilers and hot water tanks.

Fireproofing insulation may be found on building structural beams and decking. Acoustical insulation (soundproofing) commonly has been applied as a troweled-on plaster in school and office building stairwells and hallways.

Unfortunately, with time and exposure to damaging forces (e.g., severe weather, chemicals, mechanical forces, etc.), many asbestos-containing materials may become crumbled, pulverized or reduced to powder, thereby releasing asbestos fibers, or may deteriorate to the extent that they may release fibers if disturbed.

Since inhalation of asbestos fibers has been linked to the development of respiratory and other diseases, any material which is friable, or has a high probability of releasing fibers, must be handled in accordance with the Asbestos NESHAP.