This specification covers the acceptance testing of insulating rubber matting that are used as a floor covering for the personal protection of workers. The sheeting shall be made from any elastomer or combination of elastomeric compounds. Two types of matting, differing in chemical and physical characteristics, are provided and are designated as Type I, which has been properly vulcanized, and Type II, which has one or more of the following special properties: (A) ozone resistance; (B) flame resistance; and (C) oil resistance. Five classes of matting, designated as Classes 0, 1, 2, 3, and 4, are assigned according to electrical protection characteristics. When evaluated in accordance with the test procedures detailed herein, the matting shall adhere to the following property requirements: electrical properties such as phase-phase maximum use voltage, AC and DC proof-test voltages, AC and DC dielectric breakdown test voltages, and AC and DC electrode clearances; an physical and chemical properties such as moisture absorption, oil resistance, tensile strength, tension set, elongation, resistance to accelerated heat aging, and flame resistance.

1.1 This specification covers acceptance testing of rubber insulating matting for use as a floor covering for protection of workers.

1.2 Two types of matting, differing in chemical and physical characteristics, are provided and are designated as Type I and Type II matting.

The following safety hazards caveat applies only to the test method portion, Sections to , of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 1

Rubber insulating matting should remain flexible for use through normal temperature ranges.

Rubber as used in this specification is a generic term that includes elastomers and elastomer compounds, regardless of origin.

1.3 This test method covers a small-scale horizontal laboratory screening procedure for measuring the rate, extent, or time, or a combination thereof, of burning of rigid or flexible cellular plastics in accordance with this test procedure.

1.4 Materials that exhibit pronounced shrinking, curling, or melting away upon heating cannot be evaluated by this test method.

1.5 This test method is not applicable to materials that cannot be ignited under the conditions of this test, or to materials that exhibit progressive combustion without flame (continued glowing or charring).

The rate of burning or extent of burning of rigid cellular plastics also may be determined by Test Method D 3014 where the specimen is supported vertically.

1.5.1 Warning-During the course of combustion, gases or vapors, are evolved that may be hazardous to personnel. Adequate precautions should be taken to protect the operator.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.