1910.255(a)(3)
Personnel. Workmen designated to operate resistance welding equipment shall have been properly instructed and judged competent to operate such equipment
1910.255(e)
Maintenance. Periodic inspection shall be made by qualified maintenance personnel, and a certification record maintained. The certification record shall include the date of inspection, the signature of the person who performed the inspection and the serial number, or other identifier, for the equipment inspected. The operator shall be instructed to report any equipment defects to his supervisor and the use of the equipment shall be discontinued until safety repairs have been completed.
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