You must fit all sheaves with sheave guards to prevent the wire rope from coming off under slack cable or similar conditions.
Wash. Admin. Code § 296-806-42068
Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. 04-14-028, § 296-806-42068, filed 6/29/04, effective 1/1/05.