Manual Material Handling & NIOSH Lifting Equation Questions with 100 % correct answers

Manual Material Handling (MMH) - Answer-act of manually grasping and moving an object of a definable size MMH Types - Answer-- lifting - lowering - pushing - pulling - holding - carrying MMH Statistics - Answer-- 2% of workforce affected annually - MMH injuries account for 27% of all industrial injuries - 60% of industrial injury expenses are due to MMH - May be acute but usually CTDs - most MMH injuries affect the back Goal of MMH - Answer-identify limits for MMH tasks (weights, frequency, etc.) Methods of MMH - Answer-- Epidemiological Analysis - Biomechanical Analysis and Models - Work Physiology (Energy Expenditure) - Psychophysics - subjective tolerance limits Challenge of MMH - Answer-variability in people's capacities makes it difficult to identify and define absolute limits Snook Tables - Answer-- psychophysical lifting criteria - assesses lifting, pushing, pulling, carryingNIOSH Lifting Guidelines - Answer-assesses lifting tasks Snook/Ciriello Tables - Answer-- developed by Liberty Mutual - psychophysically derived - subjects performed and were asked about the "acceptability" of multiple combinations of work parameters - determines maximum acceptable force/weight for a chosen percentage of both male and female populations - considers five different MMH activities (lift, lower, push, pull, carry) - designing manual tasks for >75% of the female work population will offer best protection from MMH injuries Lifting/Lowering - Answer-- same approach used for both lift and lower - input information to gather Pushing/Pulling - Answer-- same approach used for both push and pull - considers both the initial and the sustained forces NIOSH Work Practices Guide (WPG) - Answer-- compiled by a panel of expertts in 1981 to provide concrete guidelines to assist industry in the prevention of overexertion injuries during lifting - second panel of expertes was convened in the late 1990's to review recent developments and research in this are and to revise the work practices guide NIOSH WPG Assumptions - Answer-- overexertion injury is the result of job demands that exceed a workers capacity