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(a) Testing of Water.
(1) The minimum resistivity of water shall be 500 ohm/in3.
(2) Every load of water shall be tested immediately prior to use.
(b) Grounding and Bonding Requirements When Using Conductive Hoses.
(1) When washing with a hand gun or utilizing fixed sprinklers, the pumper truck shall be bonded to the same metal structure supporting the insulators being washed.
(2) All equipment used in the washing procedure shall be bonded to the metal structure supporting the insulators being washed.
(3) During washing operations, employees shall not be permitted to step on or off the truck or metal structure, or touch any part of the truck, conductive hoses or metal structure while standing on the ground.
(4) When washing has been completed, the nozzle operator shall be required to remain stationary in his position and observe until the truck operator has disconnected the hose and the truck bond from the metal structure.
(c) Grounding and Bonding Requirements When Using Non-Conductive Hoses.
(1) When a non-conductive hose is used and the operator is in contact with the metal structure, the gun, if conductive, shall be bonded to such structure.
(d) Operational Checks. Prior to the start of washing operations each day, a check shall be made of the insulator washing equipment. Such check shall include, but is not limited to the following: aerial lift equipment, pumps, communication equipment and lights.
NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
1. Amendment filed 12-10-87; operative 1-9-88 (Register 88, No. 1).
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