WAC 296-874-20048. Protect employees from weather hazards

(1) You must prohibit work on or from scaffolds during storms or high winds unless both of the following are met: (a) A competent person has determined that it is safe for employees to be on the scaffold; (b) The employees are protected by either: (i) A personal fall arrest system; or (ii) Wind screens. (2) You must make sure wind screens are not used unless the scaffold is secured against the anticipated wind forces.