(1) When a tube is necessary, loading must be done through a nonsparking loading tube.
(2) Loading tubes and casings must be the same type of metal to prevent electric transient currents from occurring as a result of a galvanic reaction of the metals and water.
[Statutory Authority: RCW 49.17.010, [49.17].040, and [49.17].050. WSR 02-03-125, ยง 296-52-67195, filed 1/23/02, effective 3/1/02.]