Water Spray Process System

A water spray process system may be used for removal of ACM and PACM from cold line piping if employees carrying out such process have completed a 40-hour separate training course in its use, in addition to training required for employees performing Class I work. The system must meet the following specifications and must be performed by employees using the following work practices:

• Piping must be surrounded on 3 sides by rigid framing.
• A 360 degree water spray, delivered through nozzles supplied by a high pressure separate water line, must be formed around the piping.
• The spray must collide to form a fine aerosol which provides a liquid barrier between workers and the ACM and PACM.

The system must meet the following specifications and must be performed by employees using the following work practices (continued):

• The system must be run for at least 10 minutes before removal begins.
• All removal must take place within the water barrier.
• The system must be operated by at least three persons, one of whom must not perform removal, but must check equipment, and ensure proper operation of the system.
• After removal, the asbestos containing material and presumed asbestos containing material must be bagged while still inside the water barrier.

To learn more about Construction Asbestos Safety visit our Construction Asbestos Safety Online Training web page.