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1 – Introduction to Ergonomics

With the increase of the cadences, the optimization of the processes and above all the more important consideration of the men in the enterprises, ergonomics is today a high-stakes activity.

2-The Therbligs

Developed at the beginning of the twentieth century, the Therbligs mark the start of movement studies and the taking into account of ergonomics in the development of processes and methods of work.

The OSHA checklist

The OSHA checklist is a simple tool to begin a process of detecting and reducing MSD.

OREGE

The Orège method proposes the originality to be based on a confrontation between the evaluation of a specialist and that of the operator. It allows a good involvement and understanding.

Load port – standard NF X35-109

We are often subject to handling, whether in an office or in production. These handlings represent the majority of MSD and accidents.

OCRA

OCRA analysis is a powerful tool for detecting problems related to very repetitive tasks (several times not minutes), with low load levels (-3kg).

REBA Grid

The REBA grid is a more global evolution than the RULA grid. Conceived by the same authors, it will allow to take into account the posture of the whole body.

Snook tables

The Snook tables provide a value of the proportion of the population being able to perform some manual task.

NIOSH Equation

The NIOSH equation is the most common tool for analyzing load uplift problems and preventing back problems.

The RULA grid

The RULA grid is a method of evaluating work postures. It highlights the risk of postures related to the observed work cycle and to issue a “rating” on this risk.

ART

The ART tool allows you to evaluate the risks of the upper body (hand and arm) linked to very repetitive tasks.

MAC

The MAC tool is a tool for evaluating the risk of injuries associated with multiple lifting, transport or Handling operations.

The TLV

The TLVs are tables showing stress limit values beyond which the work presents significant risks of MSD. There are tables for carrying loads and manual operations.

Job Strain Index

The Job Strain Index is an assessment method created to estimate the level of risk of developing a musculoskeletal disorder by hand, wrist, forearm or elbow for intensive repetitive tasks.

LUBA

The LUBA method is a technique for evaluating postural stresses on the upper part of the body.

QEC

The QEC (Quick exposure Check) is used to evaluate the exposure level of a worker to MSD risks for the back, shoulders/arms, wrists/hands and neck.

Mantra

This method of risk prevention MSD allows to cross many criteria (Vibration, frequency, effort…) To assess the level of exposure of the lower limbs, back, neck, shoulders, arms, wrists and hands.

OWAS

This method of Finnish origin allows to assess the risks of MSD for the trunk and the lower and upper limbs.

CTD Risk

The CTD Risk is an ergonomic work analysis tool that is based on an analysis of the frequency of tasks of efforts, vibrations… for the upper body.

Position at the desk

In the Professional and home world, we spend most of our time sitting. Yet the seated position is not suitable for human morphology at all.

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