The timber industry (occupational health) is a branch of the forestry industry for the extraction and primary processing of wood. Logging for industrial purposes consists of the following production processes: felling, cutting, scrapping, harvesting, storing and sending to consumers.
The main operation in the felling of the forest is a sawing of tree trunks with the help of a gasoline or electric. Unfavorable factors in this process are noise (see) of medium-frequency character and local vibration (see). During the operation of the chainsaw, the exhausted gases enter the workers breathing zone, the most unfavorable component of which is carbon monoxide (see). The introduction of a rational mode of work and rest (10-minute breaks after 45 minutes of sawing), warming of hands, warm baths and massage of hands after work significantly reduced the risk of developing a vibration sickness.
Winches, which use winches to dragging trees, are exposed to noise of medium frequency. Tractor tractors are exposed to dust generated by pulling fallen trees, mid-frequency noise from a diesel engine and jerky vibration of varying frequency. Trimming of branches is carried out either manually, or with the help of electric shavers, generating high-frequency vibration. In the cold season, logging workers may be exposed to low temperatures and intense air movement, and mosquito and mosquito bites in the summer.The
Long exposure to vibration and noise can cause vibration sickness (see) and hearing loss (see). Inadequate nutrition in the conditions of felling areas can lead to diseases of the digestive system . For workers performing logging, rheumatism (see), scoliosis (see) of the lumbar spine with deforming spondylosis is observed more often than in workers of other occupations (see).
The main recreational activities in logging are: further mechanization and automation of the extraction and processing of wood, the improvement of mechanized tools and machines, the improvement of the conditions of nutrition and water supply in the cutting areas and the provision of qualified medical care.
The timber industry is a branch of the timber industry for the extraction and primary processing of wood. In the USSR logging operations are mainly mechanized. Unfavorable hygienic factors in the sawing of trees by chainsaws are mid-frequency noise and vibration. Sources of noise: the engine, the chain saw of the chainsaw. Vibration abruptly fluctuates in frequency and amplitude. The felling of the forest with a gasoline-powered saw is accompanied by the release into the breathing zone of the working exhaust gases containing carbon monoxide, products of incomplete combustion of gasoline. In recent years, new models of gasoline-powered saws have been created, which made it possible to reduce the vibration on the handles by 10-12 times, and also to reduce noise during work and to remove the exhaust gases from the worker's breathing zone. A rational mode of work and rest for workers is developed and implemented: a 40-45-minute file and 10-minute breaks, which also contributes to the prevention of vibration sickness.
The working conditions of the winches involved in dragging trees are characterized by considerable nerve stress and the influence of the noise of the mid-frequency spectrum. Tractor tractors are exposed to dust, unfavorable meteorological conditions, mid-frequency noise from a diesel engine, the intensity of which varies depending on the type of tractor, speed and mode of operation. Of great importance is the vibration of a complex nature (jerky low frequency and higher frequencies from engine operation). In some logging enterprises, the stump of twigs is produced by electric twigs, which generate high-frequency vibration.
Workers of the logging industry can observe: a vibrational disease (see), professional deafness (see), diseases of the digestive system , vegetoneurosis of the lower extremities, rheumatic diseases, scoliosis of the lumbar region with deforming spondylosis.
Health improvement measures: further mechanization and automation of wood extraction and processing processes, improvement of mechanized tools and machines, improvement of nutrition and water supply conditions in cutting areas, and provision of qualified medical care. Preliminary and periodic medical examinations play an important role in the prevention of occupational diseases. See also Woodworking industry.