You must ensure that a job hazard analysis is made, by qualified personnel, of the operations to be performed on each welding machine to determine the safeguards and personal protective equipment that must be used for each job.
Wash. Admin. Code § 296-24-69009
Order 73-5, § 296-24-69009, filed 5/9/73 and Order 73-4, § 296-24-69009, filed 5/7/73.