Procedures for the use of the decontamination unit must be established by the person performing abatement to prevent contamination outside the asbestos work area. A decontamination unit must be used by all persons when exiting a containment. The decontamination unit must:
be contiguous with the containment area except as provided in subpart 2;
consist of a series of connecting rooms with the middle room being the shower room;
have doorways between the rooms and entrances to the unit protected with two overlapping sheets of polyethylene or the functional equivalent; and
In facilities classified in the Standard Industrial Classification Manual, 1987, as a B division, D division-major group 26, or E division-major group 49, the decontamination unit must be connected to the containment where feasible. The Standard Industrial Classification Manual, 1987, is available from the National Technical Information Service, 5285 Port Royal Road, Springfield, Virginia, 22161, or from the State Law Library, Minnesota Judicial Center, 25 Rev. Dr. Martin Luther King Jr. Blvd., St. Paul, Minnesota 55155.
Filtered wastewater from the shower must be discharged to a sanitary sewer or a septic system, or may be collected in barrels for later disposal to a sanitary sewer or septic system.
For small residential abatement, the decontamination unit must consist of at least a clean room, shower room, and dirty room.
For abatement in a facility other than small residential abatement, the decontamination unit must consist of a clean room, an air lock chamber, a shower, an air lock chamber, and a dirty room.
20 SR 2765
June 3, 2013
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