Washington Administrative Code
Title 296 - Labor and Industries, Department of
Chapter 296-79 - Safety standards for pulp, paper, and paperboard mills and converters
Section 296-79-130 - Crossovers, aisles, passages

(1) Clearances to be marked. Low clearance areas under conveyors which could present a hazard to mobile equipment operations must be identified by a suitable means, such as signs, contrasting colors, or tell-tales.

(2) Crossovers over obstructions in passageways. Crossovers must be provided where employees are required to cross over transmission drive lines or other permanent obstructions in passageways or walkways.