Evaluating the protective capacity of two-post ROPS for a seat-belted occupant during a farm tractor overturn.
Guan-J; Hsiao-H; Zwiener-JV; Current-RS; Lutz-TJ; Cantis-DM; Powers-JR Jr.; Newbraugh-BH; Spahr-JS
J Agric Saf Health 2011 Jan; 17(1):15-32
This study evaluated the effectiveness of a commercial rollover protective structure (ROPS) and size-extended ROPS in protecting a 95th percentile male operator during tractor overturns. Six rear upset tests (commercial ROPS) and ten side upset tests (commercial and size-extended ROPS) were conducted. A 95th percentile instrumented male manikin was used in all tests. Head injury criterion (HIC 15 ), 80 g limit on resultant head acceleration, neck injury criterion (N ij ), and peak axial force (extension-compression) were employed to evaluate injury potential. In all rear tests, the manikin's head impact with the ground was within the tolerance limits for head/neck injuries. Based on limited trials in the side tests, the study observed a small to moderate chance of neck injuries under the commercial and size-extended ROPS conditions; the injury risk was not statistically significant between these two test conditions. This study identified a risk of non-fatal injuries for large-size operators in side overturns, although the prevention effectiveness of commercial versus size-extended ROPS cannot be determined without further testing. These findings may have implications for future ROPS designs.
Agricultural-industry; Agricultural-machinery; Agricultural-processes; Agricultural-workers; Agriculture; Engineering-controls; Equipment-design; Farmers; Injuries; Injury-prevention; Machine-guarding; Risk-analysis; Safety-equipment; Safety-measures; Tractors;
Author Keywords: Agricultural safety; Clearance zone; Injuries; Rollover protective structures; Tractor overturn
Jinhua Guan, NIOSH Division of Safety Research, 1095 Willowdale Road, MS G800, Morgantown, WV 26505
DSR; OMSHR; EPRO
Construction; Services: Public Safety
Journal of Agricultural Safety and Health