Minimum Performance Criteria for Operator Front Protective Structure (OFPS) for Certain Equipment
This SAE standard applies to all forestry machines exposed to the hazard of objects penetrating the front of the operator station (other than the roof). This would include:
Front guards for yarders with cabs mounted next to the tower;
Front guards for forestry machines capable of handling material in front of and above the deflection limiting volume (DLV); such as knuckle boom log loaders and swing to tree feller bunchers; but excluding rubber-tired or tracked front-end loaders when equipped with buckets or forks with hold down grapple arm(s); and excluding forwarders and clambunk skidders fitted with load bunk headboards meeting the requirements of ISO 11850.
Rationale: This document was developed to provide criteria for evaluating structures intended to meet the requirements of the Oregon OSHA regulation 437-007-0775, section (12), for the classes of forest machines described in the Scope of this document.