Wash. Admin. Code § 296-803-50060
You must do the following before allowing another employer's personnel to service or maintain machines or equipment if your energy control procedures require they be locked or tagged out:
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. WSR 17-18-075, § 296-803-50060, filed 9/5/17, effective 10/6/17; WSR 04-15-105, § 296-803-50060, filed 7/20/04, effective 11/1/04.]