Section 296-52-67230. Initiating systems.

Latest version.

(1) Electric systems.

(a) Safety switch. A safety switch must be:

(i) Placed at intervals in the permanent firing line when firing from a power circuit.

(ii) Made:

(A) So it can only be locked in the "off position"

OR

(B) With a short-circuiting arrangement of the firing lines to the detonator circuit

(b) Lighting gap. A lighting gap must be:

(i) At least five feet ahead (in the firing system) of the main firing switch, between the switch and power source.

(ii) Bridged by a flexible jumper cord just before firing the blast.

[Statutory Authority: RCW 49.17.010, [49.17].040, and [49.17].050. WSR 02-03-125, § 296-52-67230, filed 1/23/02, effective 3/1/02.]

RCW 49.17.010, [49.17].040, and [49.17].050. WSR 02-03-125, § 296-52-67230, filed 1/23/02, effective 3/1/02.

                    
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