Forze misurate e sforzi percepiti nel taglio dei sarmenti di vite
Schillaci, G.; Balloni, S.; Bonsignore, R.; Camillieri, D.; Romano, E.
Atti del III Convegno Nazionale di Viticultura
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San Michele all'Adige (TN)
Fondazione Edmund Mach
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|Riassunto in Inglese:|
The risk assessment is imposed by repetitive movements by Title VI of the Legislative Decree 81/08 (Consolidation Act on safety at work). International standards EN 1005-5 (Evaluation of repetitive high frequency) and ISO 11228-3 (Ergonomics - Manual handling - Part 3: Handling of low loads at high frequency) and particularly the latter, the recommended method for OCRA risk assessment by repetitive movements of upper limbs.
The final product of the OCRA method (OCcupational Repetitive Actions) is a numeric index (OCRA index) based on qualitative assessments in some respects, such as that linked to the effort at work.
Risk assessment is essentially based on two procedures, a first initial screening procedure based on the use of a checklist proposed by the standard, and a detailed procedure that leads to established analytical methods internationally recognized, with a preference expressed ISO 11228-3 for the OCRA method.
According to investigations carried out using this methodology on the vineyard manual pruning, the cuts made on the plant and follow one another quickly for the duration of the shift, causing movements and high repetition frequency in the upper limbs that may in the long run determine muscle-skeletal. Disorders.
Other surveys on stress caused by the cutting of branches of different grape varieties in different conditions, detected by sensorised shears has enabled it to produce a scale of resistance and confirm the qualitative statements issued by operators during interviews.
This paper intends to pursue the investigations undertaken on muscle skeletal disorders during the vine pruning. With the use of checklists for interviews to operators, relief on work conducted on field, values of the force derived from cutting trials using sensorised shears carried out on various vine cultivars, the authors seek to ensure consistency index of effort employed by OCRA with the results of the measurements.