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Ergonomic diagnosis of the station 

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By studying the expected work activity at the diving station, we used tools to correctly and objectively define the various ergonomic problems raised by this position, whether physical (awkward postures, injuries, etc.) or cognitive (stress, mental workload, etc.).
The Grafcets of tasks allow to analyze the operator's activity and identify potential organizational problems. 
The analysis of socio-economic criterias was carried out using the Nordic (pain experienced by the operator) and Karasek (mental load experienced by the operator) questionnaires as well as the absenteeism rate. 
The APACT sheet (Association pour la Prévention et l'Amélioration des Conditions de Travail) is a tool from the automotive industry that provides precise notes on 22 points that provide a general overview of the workplace. 

 

This diagnosis allowed us to draw up a list of points to be analysed in more detail, thanks to the use of standardised tools.

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Extensive ergonomic study


First, we studied the difference between the activity prescribed at the substation, and the activity actually carried out by the different operators who occupy this position. The "shortcuts" taken by some operators may be avenues for improvement, or on the contrary highlight a danger.  

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Then we studied the postures in certain tasks of the position, the efforts made, and the handling exercised thanks to the standards:

  • AFNOR, Compilation of French standards for ergonomics, AFNOR, 2000.

  • McATAMNEY L., CORLETT E.N., RULA : A survey method for the investigation of work-related upper limb disorders, Applied Ergonomics, Vol. 24, N°2, pp. 91-99, 1993. 
     

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WORKPLACE IN RESTAURANT

Spring 2018

Team : 3 students

Responsability: team leader

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Ergonomic redesign of a diving station in Solvay's cafeteria

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Context
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We were asked by Solvay to improve working conditions at the cafeteria's diving station, whose team is managed by Sodexo. In this narrow workstation, we were able to identify the main factors contributing to MSD (Musculoskeletal Disorders) and occupational diseases in order to propose corrective solutions in terms of design and organization. 

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The methodology used in the framework of the workstation improvement project is based on the methodology proposed and teached by Sagot (SAGOT J-C., Pour améliorer simultanément moyens de production et conditions de travail, La Technique Moderne, N°6-7, p7-12, 1996).

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Grafcet de la tâche en entrée machine 

Search for solutions 
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The book of specifications summarize the points for improvement that emerged from the in-depth ergonomic study. 

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Many pre-concepts were presented to the company. Example: 

  • Constant height trolleys

  • Inclined shelves

  • Modification of surface's height

  • Reorganization of the space

  • Reallocation of tasks between the customers and the operator...etc

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Finally, we have categorized three solutions according to 3 price orders: order of several thousand euros, several tens of thousands of euros and an optimal total redesign without price order. 

Source: https://www.neopost.fr/equipements/mobilier-salle-courrier/salle-courrier

Conclusion

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This project allowed us to have a concrete vision of ergonomics, at the service of employees and their well-being. The empathy required by such a study leads us in a more intuitive way to put the human being at the centre of design. In addition, we have developed a critical attitude towards the results obtained during this study so that the purpose of this project is adapted to the employee and his activity.   

Team:

Fanny MONNIER

Cyril DIOMANDE

Simon PROST

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