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Težavnost dela in obremenitev arborista obžagovalca z ropotom pri delu z bencinsko in baterijsko veržno žago
Jeršin, Matevž (Author), Poje, Anton (Mentor) More about this mentor... This link opens in a new window

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Abstract
V diplomskem delu smo ugotavljali sestavo delovnika arborista obžagovalca med izvajanjem nege dreves, opredelili delovne operacije in postopke dela ter sočasno ugotavljali težavnost dela in obremenitev delavca z ropotom. Meritve so potekale na šestih drevesih v drevoredu javorolistnih platan na posestvu Brdo pri Kranju. V delovniku je bilo 88 % delovnega časa porabljenega za delovne operacije produktivnega, ostalih 12 % pa za operacije neproduktivnega časa. Delavec je 36,3 % delovnega časa porabil za premike po drevesu, 34,4 % za nego drevesa, 73,3 % časa pa je opravljal delo na višini. Največji delež časa sta predstavljali operaciji premik po krošnji (27,0 %) in obžagovanje z motorno žago (17,5 %). Mednarodne smernice določajo mejne vrednosti za težavnost dela 35 u/min delovnega pulza in 40 % relativnega delovnega pulza. V vsem posnetem delovnem času je povprečni delovni pulz znašal 52 u/min in relativni delovni pulz 45 %, kar pomeni, da je delo pretežavno. Težavnost je največja med vzponom po vrvi, ko je delovni pulz v povprečju dosegal 62 u/min. Obremenitev z ropotom je ob uporabi bencinske žage med delovnim časom znašala 90,7 dB(A) in 127,3 dB(C), ob uporabi baterijske žage pa 80,7 dB(A) in 124,4 dB(C). Glede na slovensko in evropsko zakonodajo sta bili pri uporabi bencinske verižne žage preseženi spodnja (80 dB(A)) in zgornja opozorilna vrednost (85 dB(A)), pri neuporabi glušnikov pa bi bila presežena tudi mejna vrednost dnevne izpostavljenosti (87 dB(A)). Pri uporabi baterijske žage je bila presežena le spodnja opozorilna vrednost dnevne izpostavljenosti. Glede na rezultate raziskave se za delo arborista obžagovalca z vidika obremenitve z ropotom priporoča uporaba baterijske verižne žage, ki ima manjše škodljive posledice na delavčevo zdravje.

Language:Slovenian
Keywords:arboristika, obremenitev z ropotom, težavnost dela, plezalne tehnike, delovne operacije, arboristično plezanje, časovna študija, bencinska verižna žaga, baterijska verižna žaga
Work type:Bachelor thesis/paper (mb11)
Organization:BF - Biotechnical Faculty
Year:2020
Views:20
Downloads:15
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Secondary language

Language:English
Title:Physical workolad and noise exposure of arborist climber when working with patrol and battery powered chainsaw
Abstract:
In graduation thesis, we determined the structure of arborist climber's work process and defined work operations and procedures. The measurements were carried out on a tree-lined avenue of maple leaf plane trees on the Brdo near Kranj estate. Productive work operations, presented 88 % of working time and the remaining 12 % was spent on non-productive operations. Worker spent 36.3 % of working time for moving on the tree, 34.4 % of time for performing tree care and 73.3 % for working on height. The most time consuming work operations were moving around the canopy (27.0 %) and working with a chainsaw (17.5 %). International guidelines classifie the work of arbostist climber as too difficult, because the average working heart rate of 52 b/min is exceeding the limit value of 35 b/min. Also the relative heart rate reserve of 45 % exceedes the limit value of 40 %. Maximum loads were achieved when ascending on the rope, as the average working heart rate was 62 b/min. Noise exposure while using petrol powered chainsaw was 90,7 dB(A) and 127,3 dB(C) and while using battery powered chainsaw 80,7 dB(A) and 124,4 dB(C). According to Slovenian and European legislation, the use of a petrol powered chainsaw exceeded both lower (80 dB(A)) and higher exposure action value (85 dB(A)). If worker would not use hearing protection the daily exposure limit (87 dB(A)) value would be exceeded. Only the lower exposure action value was exceeded when using a battery powered chainsaw. According to the results the use of a battery powered chainsaw is recommended for arborist climber from a noise exposure standpoint as it has less adverse effects on the worker’s health.

Keywords:Arboriculture, noise exposure, phisycal workload, climbing techniques, work operations, arborist climbing, time study, petrol chainsaw, battery chainsaw

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