scholarly works
Permanent URI for this collectionhttps://repository.ui.edu.ng/handle/123456789/568
Browse
2 results
Search Results
Item Assessment of the noise level generated during ploughing and harrowing operations in Ibadan Nigeria(Asian Researching Publishing Network, 2012-08) Mijinyawa, Y.; Akiyemi, B. A.In an attempt to meet the food demand by the ever increasing human population, the use of machines in the performance of agricultural operations is increasingly being emphasized. Two of the most common operations for which machines are used on the farm are ploughing and harrowing. Tractor operators who perform these functions are known to spend long period of time working with the machines and various implements which generate substantial noise. Exposure to excessive noise could be harmful to human health if not regulated. The focus of this study was to investigate the level of noise to which tractor operators are exposed during ploughing and harrowing operations using MF260 and MF 265 tractors the noise level generated varied from 88.6 to 89.4dBA for ploughing and 86.5 to 88.4 dBA for harrowing. These levels are more than the recommended level of 85dB which indicate that the operators are under threat from noise and precautionary measures are desirable. A good maintenance culture especially the lubrication of parts to reduce noise, the use of ear protector such as ear muffs and plugs and cabins on tractors are recommended as ways by which the noise exposure could be minimized.Item Assessment of noise levels generated in swine production units in Ibadan, Nigeria(Asian Researching Publishing Network(ARPN), 2012-08) Mijinyawa, Y.; Alege, F. P.The increase in pork consumption globally in recent times has led to a corresponding increase in pig production with more people being employed in the industry to provide the needed services. Pigs are known to generate a lot of noise which could constitute a potential health hazard and against which remedial measures must be taken. The establishment of the levels of noise generated in piggery production units and their possible consequences on the workers in such units was the main objective of this study. The research execution consisted of a simple survey among piggery workers to obtain information relevant to noise generation and effect; and physical measurement of the levels of noise generated in selected piggery farms in Ibadan, Nigeria. The survey revealed that workers spend between 3-6 hours daily within the units and wear no noise protective devices. The levels of noise generated in the farms ranged from 95-103 dB (A) and especially during feeding period and other activities. The duration of these noises which are mainly intermittent ranged from 30 to 150 minutes. These levels of noise and the periods for which they last are above the maximum levels of 99 dB (A) over a period of 19 and 140 minutes specified by NIOSH and OSHA respectively. Swine workers in Ibadan, Nigeria are exposed to excessive occupational noise hazards and remedial measures are desirable in order to protect them. The provision of Personal Hearing Protective Devices (PHPDs), adequate medical check-ups as well as use of personal noise dosimeters for the swine workers and good housing structures and facilities for the animals are recommended.