scope:

This standard shall specify the minimum requirements for the design, performance, testing, and certification of new combination unit respirator (CUR) systems and for the replacement parts, components, and accessories for such respirators.

This standard shall not specify requirements for respiratory protection equipment that is used for firefighting operations.

This standard shall not specify requirements for any accessories not certified by the National Institute for Occupational Safety and Health (NIOSH) that could be attached to a CUR.

This standard shall not establish criteria for CURs for water or underwater operations.

This standard shall not establish criteria for protection from ionizing radiation.

Safety.

This standard shall not be construed as addressing all of the safety concerns associated with the use of CURs.

It shall be the responsibility of the persons and organizations that use CURs to establish safety and health practices and to determine the applicability of regulatory limitations prior to use.

This standard shall not be construed as addressing all of the safety concerns, if any, associated with the use of this standard by testing facilities.

It shall be the responsibility of the persons and organizations that use this standard to conduct testing of CURs to establish safety and health practices and to determine the applicability of regulatory limitations prior to using this standard for any designing, manufacturing, or testing.

Nothing herein shall restrict any jurisdiction or manufacturer from exceeding these minimum requirements.