Assessment of noise pollution in friendship textile mill limited, Ubongo —Dar es Salaam

Yhdego, Michael

doi:10.1016/0160-4120(91)90282-u

Cited by 11 publications

(10 citation statements)

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“…In contrast, the customers and workers in restaurants are safe according to World Health Organization (WHO) occupational standards whose noise limit value is 85 dBA. On the other hand, when compared our results to other studies done in Textile Mill, wood and metal works industries in Dar es Salaam as reported by Yhdego, (1991) and Mbuligwe (2004) the noise levels in the studied restaurants are lower than in those sites.…”

Section: Resultssupporting

confidence: 52%

Investigation of Noise Pollution in Restaurants in Morogoro Municipality, Tanzania, East Africa

Samagwa¹,

Mkoma²,

Tungaraza³

2010

Journal of Applied Sciences and Environmental Management

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ABSTRACT:The assessment of the present status of sound levels in seven restaurants at Morogoro municipality was studied. The indoor and outdoor ambient noise levels were measured twice a day, thrice a week for a period of two months by using digital sound level meter. In addition, questionnaires survey was used to assess sources of noise pollution in restaurants environment. The results show that the measured noise level in all studied restaurants ranged from 61dBA to 64dBA. The measured indoor noise levels were higher than outdoor in B-One, High Classic and Vyakula vya Asili restaurants and vise versa in Saddiq, Princes and Malindi dishes restaurants. The correlation coefficients between the indoors and outdoors locations in all the restaurants were either negative or less than 0.3 thus suggesting little or no impact of the indoor environment on the outdoor environment's noise level. In comparison with permissible Tanzania Bureau of Standards the measured indoor ambient noise levels in the restaurants were higher than the maximum permissible standard limit of 55dBA for mixed residential zones. As for sources of noise pollution at Morogoro municipality, the study shows that people who visit restaurants to have a meal encounter three kinds of noise pollution: the noise created by other customers, the noise from outside (the street), and the noise provided by the music systems which are run in most restaurants. Therefore, proper planning for restaurants areas and other use zones is recommended @ JASEM

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Section: Resultssupporting

confidence: 52%

Investigation of Noise Pollution in Restaurants in Morogoro Municipality, Tanzania, East Africa

Samagwa¹,

Mkoma²,

Tungaraza³

2010

Journal of Applied Sciences and Environmental Management

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“…The authors highlighted the problem of high noise levels in the range of 100 to 110 dB(A) encountered in industries and also stated that very few noise control measures are being adopted in textile industries. Yhdego 3) investigated the occupational noise exposure of workers in textile industries in Tanzania. The results of the investigation indicate gross occupational exposure to noise in these industries where more than 30% of the workers are exposed to noise levels exceeding 90 dB(A).…”

Section: Noise In Textile Industriesmentioning

confidence: 99%

Evaluation of Occupational Environment in Two Textile Plants in Northern India with Specific Reference to Noise

Bedi

2006

Ind Health

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Occupational Noise exposure has been linked with a range of negative health effects by various researchers. The resulting injury of occupational hearing loss is also a well recognized and global problem. To protect workers from hearing damage due to noise exposure and other related health effects, a vast store of knowledge has been accumulated till date about its nature, etiology and time course. There is still ignorance, amongst majority of people working in industries in developing and third world countries including India about ill effects of exposure to high values of noise. The study being reported here has been carried out in two textile plants located in Northern Indian state of Punjab. Equivalent sound pressure level L eq has been measured in various sections of these plants with the help of a Class-I type digital sound level meter. The noise spectrum has been evaluated with the help of 1/3 octave filter set. A cross sectional study involving 112 workers exposed to different levels of occupational noise has been conducted. The results of the study establish the fact that noise level in certain sections of the plants i.e Loom Shed, Spinning, Ring Frame, TFO Area is more than the acceptable limit of 90 dBA for 8 h exposure stipulated by OSHA. The noise level in other sections like carding, blow room, combing etc., although is less than 90 dB(A) , but is quite higher than limits used for assessment of noise for community response. Octave band analysis of the noise shows the presence of high sound level in 4,000 Hz frequency range, which can be a major reason for causing occupational hearing loss. The results of the interview questionnaire which included a number of parameters reveal the following; (i) only 29% workers are aware about the effects of noise on health (ii) 28% workers are using ear protectors (iii) the satisfaction with the working environment is related to noise level, as workers exposed to comparatively less noise level report better satisfaction (iv) 70% of the workers reported that high noise level causes speech interference (v) 42% workers report the noise to be annoying. The study thus demonstrates the presence of gross occupational noise exposure in both the plants and the author believes that occupational noise exposure and the related effects in India is a widespread problem.

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“…A number of studies have been carried out in the last few decades to evaluate the occupational environment in processing and manufacturing industries, mining industries, and oil and gas industries (Deborah et al 2005;Kock et al 2004;Raman 2006;Boateng and Amedofu 2004;Ydego 1991;Kisku and Bhargara 2006;Georgiescu 2000;Avwiri and Nte 2003), and the results show that a high percentage of industrial workers were exposed to more than 85 dB(A) noise levels. In spite of these studies, high noise levels have been traditionally taken for granted in industries in developing countries, especially Nigeria.…”

Section: Introductionmentioning

confidence: 97%

“…The ambient noise levels in these workplaces was found to be over 90 dB (A), and the results showed that noise induced hearing impairment was present in 100% of the workers exposed for a period of 14 years. Ydego (1991) investigated the occupational noise exposure of workers in textiles industries in Tanzania. The results of the investigation indicate gross occupational exposure to noise in these industries where more than 30% of the workers are exposed to noise levels exceeding 90 dB(A).…”

Section: Introductionmentioning

confidence: 99%

Assessment of noise level in sundry processing and manufacturing industries in Ilorin metropolis, Nigeria

Oyedepo

Saadu

2009

Environ Monit Assess

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In this work, noise level in five selected processing and manufacturing industries in Ilorin are evaluated and compared. Emphasis is given to noise emitted by individual industrial machinery from the selected industries. Event L(Aeq) and L(N) cycles were studied to identify the noisy machines and to generate baseline data. Findings show that hammer mill machine from mineral-bearing rock-crushing mills produced the highest average noise [98.4 dB(A)], an electric generator 1 [95.6 dB(A)] from the soft drink bottling industry, an electric generator [97.7 dB(A)] from the beer brewing and bottling industry, a vacuum pump [93.1 dB(A)] from the tobacco making industry, and an electric generator 2 [94.1 dB(A)] from the mattress-making industry. The highest and lowest average noise exposure levels are recorded in mineral-bearing rock-crushing mills [93.16 dB(A)] and the mattress making industry [84.69 dB(A)], respectively. The study shows that, at 95% confidence level, there is significant difference (P < 0.05) in noise levels in the industries surveyed. The percentages of machines that emit noise above Federal Environmental Protection Agency and Occupational Safety and Health Administration recommendations [90 dB(A)] are from the soft drink bottling industry (83.3%), the beer brewing and bottling industry (42.9%), the tobacco making industry (71.4%), the mattress making industry (11.1%), and minerals crushing mills (87.5%). In the past 20 years, the noise levels in the soft drink bottling industry were reduced by 0.58 dB(A), and those of the beer brewing and bottling industry were reduced by 9.66 dB(A). However, that of the mattress making industry increased by 2.69 dB(A). On average, the noise level in these industries has been reduced by 2.52 dB(A). The results of this study show that the noise control measures put in place have significant impacts on the noise exposure level in the industries surveyed.

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Assessment of noise pollution in friendship textile mill limited, Ubongo —Dar es Salaam

Cited by 11 publications

References 0 publications

Investigation of Noise Pollution in Restaurants in Morogoro Municipality, Tanzania, East Africa

Investigation of Noise Pollution in Restaurants in Morogoro Municipality, Tanzania, East Africa

Evaluation of Occupational Environment in Two Textile Plants in Northern India with Specific Reference to Noise

Assessment of noise level in sundry processing and manufacturing industries in Ilorin metropolis, Nigeria

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