WAC 296-301-220
WAC 296-301-220. Personal protective equipment
(1) Personal protective equipment. Workers engaged in handling acids or caustics in bulk, repairing pipe lines containing acids or caustics, etc., must be provided with personal protective equipment to conform to the requirements of WAC 296-800-160 .
(2) Respiratory protection. You must provide respiratory protection as required in chapter 296-842 WAC.