Ergo-UAS industrialization: management of a massive amount of data to integrate ergonomics into product design and production processes Since 2007 Fiat Group Automobiles adopted UAS method to assign a basic time to execute a motion of an activity described on process sheets where produc-tion cycles are structured and measured with a stan-dard and universal system (MTM-UAS, Methods-Time Measurement). Furthermore, FGA has intro-duced an ergonomic method, EAWS, to calculate, for each work-station, the proper biomechanical load. The previous system, to set standard time applied a relatively constant allowance to each single motion (about 4÷6%), as a function ofbody postures and forces.
Ergo-UAS system connects UAS with EAWS be-cause to feed EAWS method is necessary to input a lot of ergonomic parameters (postures, forces, actions and grip, material manual handling, trolley pushing and pulling) directly on each row of UAS analysis. By the overall working tasks assignment to a work-station (line balancing), Ergo-UAS aims at control-ling and limiting the work-load within the compli-ance ranges set by ISO/CEN standard. Ergo-UAS determines an ergonomic allowance factor, which, added to the total basic time (UAS time) gives the so called standard time. The Ergo-UAS model ranges from a minimum allowance of 1% to a maximum theoretical value of 52%. For workstation under con-trol and well-designed the maximum allowance value is 13,5%.
The core challenges during Ergo-UAS implementa-tion and management are:
– Magnitude of data: UAS analysis, ergo characterizations, Fiat data-blocks, product validities, work cycles, production program (mix of production)
– Speed and frequency of change (business dynamic condition)
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