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ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING The Back and Material Handling Issues.

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Presentation on theme: "ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING The Back and Material Handling Issues."— Presentation transcript:

1 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING The Back and Material Handling Issues

2 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING Cervical Thoracic Lumbar The Spinal Column

3 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING The Basic Structure

4 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING Short Term or acute effects: Sharp Surfaces Dropped Material Struck-by Moving Materials Mechanical Stress Slips and Falls Simpler Cause and effect relationship Epidemiology of Back Injuries

5 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING Chronic or Long Term Effects Back Ache or Pain Disc Degeneration Cause and effect not as simple, more difficult to analyze Epidemiology

6 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING Out more than 6 months only 50% chance of returning One year only 25% Management and Practitioner Training One study showed that claims dropped from 200K to 20K per year by providing modified work and conservative treat Return to Work

7 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING Material Handling Lifting/Lowering Pushing/Pulling Carrying Weights and Forces Frequency of Activities Load Center of Gravity

8 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING Material Handling

9 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING Job Risk Factors Weight of the Object Location (position of load w.r.t. worker) Frequency of Lifts Stability of the Load Hand Coupling Workplace Geometry Twisting/Stooping Environmental Factors

10 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING Personal Risk Factors Gender Age Anthropometry Lift technique Attitude Strength Training

11 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING Avoid extreme range of motion when lifting Redesign work station/work area to allow freedom of movement Provide handles on material handling equipment Provide lift-assist devices and tables Unit Load Concept Examples of Manual Handling Controls

12 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING Job Design Can reduce one-third of compensable LBP Minimize reach and lift distances Keep off floor Work station design Frequency Relax time standard Rotation Work-Rest allowances

13 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING Job Design Minimize Weight Mechanical aids Carton capacity Balance contents Convert Carry to push/pull Push over pull Use large wheels

14 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING Training Focus on awareness and avoidance Get object as close to body as possible Planning Use of handling aids Back Schools Strength and fitness important

15 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING NIOSH Lifting Equation 1991 Version

16 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING Objective: Reduce occurrence of lifting-related LBP 1981 and 1991 equations 1981 limited to sagittal plane 1991 includes asymmetry and coupling NIOSH Lifting Equation

17 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING Disqualifiers for Use One handed lifts More than 8 hours Seated or kneeling Restricted work space Unstable Objects Carrying, pushing or pulling while lifting Wheelbarrows or shovels High speed motion Unreasonable foot/floor coupling Unfavorable environment

18 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING Definition of Terms RWL = Recommended weight limit LC = Load constant HM = Horizontal multiplier VM = Vertical multiplier DM = Distance multiplier AM = Asymmetric multiplier FM = Frequency multiplier CM = Coupling multiplier

19 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING 1991 Equation RWL = LC x HM x VM x DM x AM x FM x CM

20 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING 1991 Guide Compare RWL to Actual Load (L) If Greater than or equal to 1 problem

21 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING L RWL Lifting Index

22 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING 1991 Multipliers LC = 51 Pounds HM = 10/H VM = x / V-30/ DM =.82 + (1.8/D) AM = 1 – (.0032 x A) FM go to Table CM go to Table

23 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING NIOSH Worksheet

24 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING Lifting Example

25 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING NIOSH Workshop

26 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING Start of LiftEnd of Lift NIOSH Workshop

27 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING NIOSH 1991 Lifting Calculator

28 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING WISHA Calculator for Analyzing Lifting Operations

29 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING

30 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING WISHA Workshop

31 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING WISHA If the job is a hazard Reduce weight of load Increase weight of load so that it requires mechanical assist Reduce the capacity of the container Etc.

32 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING References Applications guide for the revised NIOSH lifting equation – On CD Elements of Ergonomic Programs – On CD Musculoskeletal Disorders and Workplace Factors – On CD Work Practices Guide for Manual Lifting NIOSH

33 ERGONOMICS :: TRAIN-THE-TRAINER PROGRAM :: THE BACK & MATERIAL HANDLING What does the worker need to know from this presentation?


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