Section 325.50051. Scope and application.

(1) These rules apply to all occupational exposures to methylenedianiline (MDA), chemical abstracts service registry no. 101-77-9, except as provided in subrules

(2)      to (6) of this rule. This application includes construction, alteration, repair, maintenance, and renovation activities that involve MDA. These rules also apply to the transportation, disposal, storage, containment, and spill cleanup of MDA at construction sites.

(2)   Except as provided in subrule (7) of this rule and in R 325.50056c, these rules do not apply to the processing, use, and handling of products that contain MDA if initial monitoring indicates that the product is not capable of releasing MDA in excess of the action level under the expected conditions of processing, use, and handling that will cause the greatest  possible   release  and  if  dermal  exposure  to   MDA,  as  defined   in R 325.50052(6), cannot occur.

(3)    Except as provided in subrule (7) of this rule, these rules do not apply to the processing, use, and handling of products that contain MDA if objective data are reasonably relied upon that demonstrate that the product is not capable of releasing MDA under the expected conditions of processing, use, and handling which will cause the greatest possible release and if dermal exposure to MDA cannot occur.

(4)       Except for the requirements of R 325.50054 and the requirements of Occupational Health  Standard  Part  430  “Hazard  Communication”   as  referenced  in R 325.50051a, these rules do not apply to the storage, transportation, distribution, or sale of MDA in intact containers that are sealed in a manner that contains the MDA dusts, vapors, or liquids.

(5)     Except as provided in subrule (7) of this rule, these rules do not apply to materials in any form that contain less than 0.1% MDA by weight or volume.

(6)   Except as provided in subrule (7) of this rule, these rules do not apply to finished articles that contain MDA, as defined in R 325.50052(10).

(7)    Where products that contain MDA are exempted pursuant to the provisions of subrules (2) to (6) of this rule, an employer shall maintain records of the initial monitoring results or objective data supporting that exemption and the basis for the

employer's  reliance   on  the  data,  as   provided  in  the  recordkeeping   provisions  of R 325.50072 to R 325.50072g.

History: 1993 AACS; 2015 AACS.