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NOTE: This is an unformatted excerpt from our online fire protection training library.

Class III Areas

Class III Considerations

Thermal Blanketing

Like combustible dusts, fibers and flyings may build up may build up
In order to keep fibers and flyings from accumulating, especially in areas that are difficult to clean, surfaces may be sloped at 45° or more. This method is recommended in woodworking facilities as covered by NFPA 664. on equipment and enclosure surfaces. In most cases, layers of fibers and flyings will form thermal insulation "blankets" that interfere with heat dissipation from the surfaces they blanket. This will in turn cause an increase in the surface temperature and increase the risk of ignition of the fibers or flyings.
NOTE: This is an unformatted excerpt from our online fire protection training library.

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