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NIOSH Post-Hearing Comments to DOL (Department of Labor) on the Mine Safety and Health Administration Proposed Rule on Automatic Emergency-Parking Brakes for Rubber-Tired Self-Propelled Electric Face Equipment, by R. A. Lemen, August 29, 1988.

PB90132630

Publication Date	1988
Page Count	6
Abstract	The testimony expanded on an earlier testimony which stated that most decelerations of mine vehicles would be much less than 10 gravities (g). Calculations were offered which indicated what was considered to be a worst case determination of deceleration forces for rubber tired underground mining vehicles. The calculation took into account the braking force, coefficient of static friction, vehicle weight, vehicle mass, and acceleration due to gravity. For dry surfaces the values of the coefficient of static friction from the literature were between 0.6 to 0.8 for slow moving, rubber tired vehicles. In this worst case scenario, therefore, it was expected that deceleration forces would be no greater than 0.6 to 0.8g. If the vehicle occupants were properly restrained, then all decelerations due to normal braking operations would not result in injuries. NIOSH reiterated the recommendation that operators and passengers be required to use full body safety restraints and ergonomically designed seats compatible with the deceleration.
Keywords	Mining equipment Brakes(Motion arresters) Regulations Safety devices Government policies Motor vehicles Occupational safety and health Testimony
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	48A - Mineral Industries 57U - Public Health & Industrial Medicine 41I - Job Environment 94D - Job Environment
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH.
Supplemental Notes	See also PB90-132622.
Document Type	Technical Report
NTIS Issue Number	199006

NIOSH Post-Hearing Comments to DOL (Department of Labor) on the Mine Safety and Health Administration Proposed Rule on Automatic Emergency-Parking Brakes for Rubber-Tired Self-Propelled Electric Face Equipment, by R. A. Lemen, August 29, 1988.

NIOSH Post-Hearing Comments to DOL (Department of Labor) on the Mine Safety and Health Administration Proposed Rule on Automatic Emergency-Parking Brakes for Rubber-Tired Self-Propelled Electric Face Equipment, by R. A. Lemen, August 29, 1988.
PB90132630

Publication Date	1988
Page Count	6
Abstract	The testimony expanded on an earlier testimony which stated that most decelerations of mine vehicles would be much less than 10 gravities (g). Calculations were offered which indicated what was considered to be a worst case determination of deceleration forces for rubber tired underground mining vehicles. The calculation took into account the braking force, coefficient of static friction, vehicle weight, vehicle mass, and acceleration due to gravity. For dry surfaces the values of the coefficient of static friction from the literature were between 0.6 to 0.8 for slow moving, rubber tired vehicles. In this worst case scenario, therefore, it was expected that deceleration forces would be no greater than 0.6 to 0.8g. If the vehicle occupants were properly restrained, then all decelerations due to normal braking operations would not result in injuries. NIOSH reiterated the recommendation that operators and passengers be required to use full body safety restraints and ergonomically designed seats compatible with the deceleration.
Keywords	Mining equipment Brakes(Motion arresters) Regulations Safety devices Government policies Motor vehicles Occupational safety and health Testimony
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	48A - Mineral Industries 57U - Public Health & Industrial Medicine 41I - Job Environment 94D - Job Environment
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH.
Supplemental Notes	See also PB90-132622.
Document Type	Technical Report
NTIS Issue Number	199006