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1. WELCOME
Topic: Noise pollution and its impact from
industry
26/01/2021 1
TO OUR PRESENTATION
Name ID Page No.
1. Jubayar Al Mahmud 2016200400017 1-10
2. Tusher Kante Dhar 2017000400033 12-15
3. Towfiq ahmed 2017000400129 17-23
4. Istiaq Adip 2017000400009 25-29
5. Baha Uddin Reza 2017000400096 31-34
6. Hriday Bhuiya 2017000400020 36-39

2. JUBAYAR AL MAHMUD
2016200400017
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3. WHAT IS NOISE?
Noise: Noise is nothing but an unacceptable level of sound that
hampers mental and physical peace, and may induce severe damage
to the health.
Normal range of hearing: The normal range of hearing for a healthy
young person is from approximately 20 Hz to 20,000 Hz.
Suitable range- 500 Hz to 4000 Hz – the speech frequencies.
This presentation is a summary of a study which was conducted at
Gorai union under Mirzapur upozila of Tangail district.
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4. TABLE 1
Noise level standards in Bangladesh in various areas during day and
night time.
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5. TABLE 2
Sources of noise according to the type of industry.
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6. TABLE 3
Noise level (dB) of the selected Industry
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7. TABLE 4
The noise level and their impacts on human according to the doctors.
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8. SURVEY ON WORKERS
Percent of respondents about the knowledge of noise pollution in study
area.
Types of problem faced for noise pollution in study area.
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9. SURVEY ON WORKERS
Comments of responds depending on the thinking of tolerable and
intolerable noise level in study area.
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10. RESULTS AND RECOMMENDATION
Result: The result of this study shows that the workers of all
industries are victim to high levels of noise. The older workers were
more vulnerable to high level of noise.
Recommendation: Implementing one or more of the following
hierarchy of control measure can manage excessive noise levels:
 Substituting noisy machinery with quieter machinery are more
efficient to control noise pollution.
 Engineering controls by treating the noise at the source or in its
transmission path.
 Providing hearing protectors.
 Appropriate design of compressed-air lines and ventilation ducts.
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11. TUSHER KANTE DHAR
2017000400033
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12. EFFECT OF NOISE POLLUTION
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13. NON-AUDITORY EFFECTS OF NOISE
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Table 1:-

14. WHO GUIDELINES FOR
ENVIRONMENT QUALITY
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15. RESULTS AND DISCUSSION
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Table 2:-

16. TOWFIQ AHMED
2017000400129
26/01/2021 16

17. INTRODUCTION
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In courses of time, our export getting bigger and bigger –especially our RMG sector
and right now we are the 2nd largest Gmt exporter in the world after China. Though
there is a big gap in between China and Bangladesh regarding yearly
exporting turn over in garment sector but we could stand our country in a good
position crossing some other neighborhood countries and worldwide as well.
While the textile industrialization getting bigger, then it also talking about
organizational health and safety issue for the workers. In a textile industry as well
as garments –there are lot of operations which involved with health risk and need a
good safety environment for workers. I would like to talk about today the “Standard
Noise level &Pollution in the textile Industry and Environment” which is being a bit
over looked by buyers and owners but the issue is burning.

18. NOISE INDUCED HEARING LOSS”
(NIHL)- :
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NIHL has recently become one of the biggest occupational disease risks and
occupational NIHL contributing to 16% of global deafness and it is the real fact. So we
can realize noise in textile industry and garment cannot be overlooked as well as in
our country environment and it is deeply related with a big compliant issue from
buyer point of view. Of late, it is strictly controlled by the buyers so far as a part of
OHS. Actually what is the noise level—-In atmospheric sounding and noise pollution,
ambient noise level (sometimes called background noise level, reference sound level,
or room noise level) is the background sound pressure level at a given location,
normally specified as a reference level to study a new intrusive sound source.

19. WHAT SHOULD BE THE
ACCEPTABLE NOISE LEVEL
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The decibel (dB) level acceptable under ILO and Occupational Safety and Health
Administration (OSHA) of USA for an eight-hour day cannot exceed 85-90 dB; for six
hours the limit is 92 dB; for four hours the maximum limit is 95 dB; for three hours the
limit is 97 dB; for two hours 100 dB; for one and a half hours 102 dB and for one hour
105 dB.

20. HOW DOES NOISE AFFECT :
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WHO has described noise pollution as an underestimated threat that can cause
hearing loss, cardiovascular problems, cognitive impairment, stress and
depression. Noise pollution can affect people in several ways, some of which are
listed below:
1. HEARING LOSS
2. POOR COGNITIVE OUTCOME
3. CARDIOVASCULAR DISEASE
4. SLEEP DISTURBANCES
5. TROUBLE IN COMMUNICATING
6. VARIOUS OTHER PHYSICAL OR MENTAL LOSSES
7. ANNOYANCE
8. GETTING TIRED AND EXHAUSTEDOCCUPATIONAL HEALTH HAZARD

21. HOW DO YOU MEASURE NOISE
LEVEL
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The energy in a sound wave can be measured
using Decibels. The Decibel Meter shows
examples of things that make noise and
measurements in decibels. Amplitude measures
how forceful the wave is. It is measured in
decibels or dBA of sound pressure.

22. FIVE TIPS TO REDUCE NOISE IN
TEXTILE INDUSTRY
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1) Use hearing protection,
2) Do not operate noisy machinery
3) Measure and map noise
4) Move noisy tasks
5) Isolate noise

23. FINAL WORDS:
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Bangladesh has, over the last 40 years, seen a significant growth in the textile
manufacturing & Export. Almost 80% of foreign currency coming from
garments exporting and 4 million people are involved directly in the sector.
The increase in manufacturing has led to an increased exposure to high levels
of noise and has contributed to increase NIHL among textile workers. Again,
Garment workers in Bangladesh face noise levels of 96-100 Decibels which is
a significant contributor to NIHL among women textile workers . So it is the
right time to take pragmatic steps to reduce noise pollution in the industries
and country as well. Already some of the textile industries made their
position far better than even abroad and present government is taking some
stern action as well as arranging awareness seminars/meeting on this issue.
Students from universities and some of the organizations members
demonstrate against noise pollution, arranging rally and so on. But the
precondition to reduce noise pollution in a minimum level is public awareness
and commitment, simultaneously government has to be taken logical &
customized noise management policy studying & analyzing other countries
policies in the world.

24. ISTIAQ ADIP
2017000400009
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25. INTRODUCTION
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26. SOURCES OF NOISE POLLUTION :
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27. STATUS OF NOISE LEVEL INSIDE
THE INDUSTRIES
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28. IMPACT OF NOISE
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29. CONCLUSION :
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Though the noise level inside and outside the visited industry is in the satisfactory level
but still there are some problems regarding noise coming from different machinery used
in the production system of the industries. Thus specific workers involved in operating
that specific machinery need special care as the noise can ultimately affect the workers’
health. Thus the following activities can be taken as general recommendation for the
control of noise inside the industry:
Use of ear muff as a mandatory by the workers engaged in operating machinery that
produces sound in the range of 80 dBA and above.
Replacing very old machineries that produce excess noise.
Isolation of the generator room from the main industrial workplace and use of ear
muff by the respective personnel engaged in operating the generator
Beside the general recommendations, based on the observed scenarios and findings
some more specific suggestions can be implemented by various industries for the
improvement of noise and its related status in the industries of KHIA.

30. BAHA UDDIN REZA
2017000400096
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31. INTRODUCTION
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Noise is an unwanted sound that interferes with the function in a given space. It is
subjective because what is disturbing and unacceptable to one may be acceptable to
another. It is difficult to give a very clear definition of an irritating noise. In recent years,
even a developing country like Bangladesh has taken positive steps against excessive
noise. Like air and water pollution, noise pollution has been accepted as a major threat to
human beings.
The problem of noise pollution can be combated when' there are means of measuring
noise levels and a system of classification. The decibel is a dimensionless number, which
relates sound intensity or sound pressure levels to some reference point. The human ear
is able to hear I - 130 decibels.It’s damage a lot human health also its effect on
environment.

32. EFFECT OF NOISE ON HUMAN
BEINGS
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Apart from damage to hearing, there is evidence
that noise also affects the people in the following
other ways:
• Reduced performance, e.g. reduced ability to concentrate.
• Disturbance of sleep.
• Annoyance (oral communication is difficult or impossible), which
manifests itself primarily in emotional responses.
• Excitement (activation) of the central and vegetative nervous
system, e.g. increased blood pressure, higher heart frequency, and
effect on metabolism.

33. REDUCTION OF NOISE
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Reduction of noise is important and above all a
demanding task. Machinery manufacturers have
attempted to keep the noise emission as low as possible,
but what would have been achieved in lowering down the
noise level has been cancelled out by the continuous
increase in speed. Further progress in this field is
foreseeable with the aid of computer-aided online
control.

34. CONCLUSION
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In Bangladesh industry, the noise level is high
and it is high time that the mills must
recognize this as an environmental problem
with an impact on occupational environment
and take steps to reduce it.It is important to
keep a close control over pollutants so that
we can maintain the environment in an
acceptable condition for future generations.

35. HRIDAY BHUIYA
2017000400020
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36. SOURCE OF NOISE POLLUTION
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1.Industrial source
2.Transport vehicles
3.Household
4.Public address system
5.Agricultural machine
6.Defence equipment

37. EFFECT OF NOISE
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1. Physical Effect
2. Psychological Effect

38. NOISE POLLUTION LEVEL AND ITS
HARMFUL EFFECTS:
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LEVEL (in db) Effects
up to 23 ……………………….. No disturbance
30—60 ……………………….. Stress, tension, psychological (illness, heart attact) effects
especially at upper range.
60—90 ……………………….. Damage to health, psychological and vegetative (disturbance
in stomach-gall function, pains in muscles, high blood pressure, disturbance in sleeping)
60—120 ……………………… Damages to health and ontological (ear diseases) effects
Above
120 ……………………. Painful effects in long run.

39. REFERENCES
Jubayar:-
https://www.banglajol.info/index.php/JESNR/article/view/32187
Tusher:-
https://www.researchgate.net/publication/265099084_Industrial_Noise_Pollution_and_its_Impacts_on_Worke
rs_in_the_Textile_Based_Cottage_Industries_An_Empirical_Study
DOI:- 10.5812/jjhs.25357
Baha Uddin reja:-
I Talukdar M K, Analysis and synthesis of shllttle proPlilsion
and retardatioll, Ph.D thesis, Indian Institute of Technology, Delhi, I981.
2 Talukdar M K, in Prereqllisites of Successful Installation of High Speed Looms, edited by M L Gulrajani [Textile Association
(India), Delhi], 1983, 13.
Hriday Bhuiya:-
https://www.yourarticlelibrary.com/speech/noise-pollution-definition-sources-and-effects-of-noise-
pollution/28295
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