Trimming is a very common operation in arboriculture, in city park as well as in forestry management. For large trees, this operation is often not possible from ground using ladders or elevators. Ladders can be dangerous and since most forestry areas are almost inaccessible, the use of mechanical elevators can be difficult/dangerous. Work activities at height, as tree-climbing, in Italy are regulated by Legislative Decree 81/08. Article 17, obliges the employer to the assessment of any risks for the health and safety of workers in workplaces. Article 71 obliges the employer to periodically inspect the used work equipment. The employer maintains all used PPE with periodical checks in accordance with instructions provided by the manufacturer. Tree-climbing activities expose operators to fall from height risk. Moreover these workers are exposed to other risks like Harness Hang Syndrome, exposure to physical factors, risk due to ergonomics issues, bad work-site organization, poor training. About the latter, Article 37 obliges employers to train workers, while Attachment XXI, specify all the features the courses must fulfil. Optionally workers can obtain a certification recognised at European level. Devices to be used as protection against falls from a height, are reported in Article 115. Their choice rely on two main concepts: security chain and suitability/mutual compatibility. These two different concepts will have to be considered by the employer while selecting the correct PPE. The term “security chain” is referred to all the devices that support and sustain at height the operators and are represented by the anchor point, ropes, harness, shock absorbers and so on. If any of these fails, the entire security chain fails also, so a redundant security line could be used. Suitability/mutual compatibility concepts are referred to specific directives the device is compliant with. Only devices for work use are admitted along the entire security chain. For example different ropes, compliant to EN892, EN1891A or EN1891B directives, are currently available. Among these, only ropes compliant to EN1891A are admitted for work use (suitability). On the other side, in working contest, an EN1891A rope is not compatible with an harness compliant with EN12277C (mutual compatibility).
|Titolo:||A survey of safety issues in tree-climbing applications for forestry management|
|Autori interni:||CARUSO, LUCIANO|
|Data di pubblicazione:||2013|
|Rivista:||JOURNAL OF AGRICULTURAL ENGINEERING|
|Appare nelle tipologie:||1.1 Articolo in rivista|