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An Experimental-assessment of Human Exposure-levels to Aircraft Noise-hazards in the Neighbouring-environments of four Nigerian Airports

Ibhadode, Osagie and Oyedepo, Sunday Olayinka and Ogunro, Steve and Azeta, Joseph and Banjo, SolomonO. and Umanah, I. I. and Apeh, E.S. and Ayoola, A. R. (2018) An Experimental-assessment of Human Exposure-levels to Aircraft Noise-hazards in the Neighbouring-environments of four Nigerian Airports. In: ICESW IOP Publishing IOP Conf. Series: Materials Science and Engineering.

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Abstract

This paper reports a scientific-assessment of the exposure-levels of aircraft noisehazards suffered by persons living/working within the neighbourhoods of four Airports [Ibadan, Benin-City, Warri and Owerri] in Nigeria. Physical measurements of selected aircraft and environmental noise parameters [Ambient Noise Level ( ANL ), Sound Pressure Level ( SPL ), Aircraft Take-off Noise-level ( ATNL ) and Aircraft Landing Noise-level ( ALNL )]; were carried-out using the integrated CR811C Noise meter, during one hundred and twenty (120) periodic noise sampling-surveys; performed [from January to December 2017] at thirty (30) randomly-selected study-locations, within the vicinity of each of these four(4) airports in accordance with the Method/Standard-procedures specified by the International Standards Organisation’s (ISO) relevant standards—ISO 3891, ISO 1996-1 and ISO 1996-2. The results showed that: while SPL ranged from 103-115 dB( A) , ANL ranged from 52.3 – 64.1 dB( A) , the ATNL ranged from 69.6 – 87.7 dB( A) , and ALNL ranged from 66.2 – 82.7 dB( A) . Actually, these results are alarming, since they significantly exceed the WHO Standard Recommended Maximum Noise-levels of: 35 dB( A) [Indoor], 55 dB( A) [Outdoor] to prevent Speech-intelligibility, Noise-annoyance & Sleep-disturbance; and 90 dB( A) [being the Permissible Noise level/limit for 8hour daytime safe human exposure]. These and the results of the Statistical analysis (Wilcoxon Sign Rank Test) carried-out, clearly prove the existence of a generally ignored, but yet dangerous problem of continuous human-exposure to excessively highlevels of Aircraft noise-hazards to which residents of Airports’ neighborhoods are subjected.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Aircraft Noise-hazard, Airport, Environment, Exposure-level, Noise-level
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 23 Oct 2018 14:25
Last Modified: 23 Oct 2018 14:25
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/12012

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