noise pollution control(1)

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Free Powerpoint Templates Noise pollution control in Transportation system Birara Tekesta Ashu Sintayehu N.Leela Manikanta Kumar Apurba Ghosh Presented by ES 600 Environmental Science and Engineering Under the guidance of Dr. Subhankar Karmakar

Flow of presentation :

Flow of presentation Introduction Sources of pollution Noise levels Impacts Measures Summary

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Transportation Noise The major source of noise pollution day in and day out. Serious hazard to man, material and animals. But it is inevitable component of life. Broad classification of transport noise is under three heads Road traffic Air traffic Railway Introduction Sources of pollution Noise levels Impacts Measures Summary

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Traffic Noise Two types of traffic noise : individual vehicles, continuous flow Individual Vehicles Noise from Engine and Transmission system, (damping system) Exhaust noise,(selfishness) Slamming of car doors,(negligence) Brake squeal, (disk brakes) Horns, (fashion) Continuous flow of vehicles that create a channel causing continuous noise Introduction Sources of pollution Noise levels Impacts Measures Summary

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Rail Noise Salient points: Rail noise reach as high as 120-130 dB. Mainly problematic where tracks pass through residential areas. Many surveys have also been conducted*. One heartening fact from survey “ train noise is unavoidable, uncontrollable so they are habituated to it”. The future expectation of increment in rails. Metro’s are however eco friendly and less noise polluting. Unfortunately Indian Railways Act, 1890 is also silent on this issue. Existing Environmental Protection Act 1986 notify noise limits on generator sets. Introduction Sources of pollution Noise levels Impacts Measures Summary * Source: www.spectro. in / noise - pollution - survey .html www. india environmentportal.org. in Environmental noise pollution by Dr.Vijendra Mahandiyan

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Airport Noise Salient features: No doubt growth in the field of civil aviation is a boon but parallely contributed to the environmental pollution. Noise pollution due to take-off and landing – “serious issue”. Supersonic jet planes- one of the biggest irritation in noisy world Sometimes break the window’s panes, crack brick’s plaster etc.. A study in UK at Heathrow airport revealed more number of mental patients in comparison to other quiet places. Military aircrafts also cause annoyance to Residents even in distant areas. Source: www.surreycomet.co.uk/.../4523457. Heathrow _ noise _ pollution Introduction Sources of pollution Noise levels Impacts Measures Summary

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Noise levels Type of vehicle Noise levels Luxury Bus 77dB Small passenger Car 79dB Miniature passenger Car 84dB Sports car 91dB Motor cycle (4 stroke) 94dB Motorcycle (2 stroke) 80dB Table: 1 Noise levels Source: “ Environmental noise pollution’”by Dr.Vijendra Mahandiyan Introduction Sources of pollution Noise levels Impacts Measures Summary

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Table 2: Noise limit for vehicles Source: cpcb.nic.in/ divisionsofheadoffice /pci2/ Noise - vehicle .pdf

Impacts of noise :

Impacts of noise Why bother about noise? Introduction Sources of pollution Noise levels Impacts Measures Summary

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Annoyance Physiological effects Loss of hearing Human performance Nervous system Sleeplessness Damage to material Effects

Control of Noise Pollution :

Control of Noise Pollution The techniques employed for noise control can be broadly classified as Control at source Control in the transmission path Using protective equipment. Introduction Sources of pollution Noise levels Impacts Measures Summary

Measures :

Measures Aircraft Noise Target date must be fixed for implementation of the aircraft emission standards, its operation prohibition if it is not noise certified. New noiseless technology to be used as in USA. Pilot monitoring special screen in plane’s cockpit to show quietest route to take off and landing. Railway noise Invite tenders to plant trees along the rail track. In consideration they will be allowed to advertise their products at railway premises. This is implemented initially in Jodhpur, to be planned in the entire country. Introduction Sources of pollution Noise levels Impacts Measures Summary

Measures:

Measures Mumbai railway adopted a plan to lease out the land. Vegetation growth will lead to environmental purity maintenance. Dual profits of curbing the pollution and restriction of growth of dirty slums along the tracks. In JAPAN some special material is placed on the upper surface of the tracks to reduce rail noise. Road Traffic Noise Condition only to use authorized type of horn (driving license). Proper maintenance of road will also serve the purpose. Introduction Sources of pollution Noise levels Impacts Measures Summary

Measures :

Measures Suggestion for users Avoid slamming of vehicle doors. Do not rev the engine unnecessarily. Keep the silencer in good order. Check the brakes are properly adjusted and do not squeal. The most important remedy is the shift from individual automobile to mass transportation. The supreme court decision to shift from diesel engine vehicles to CNG vehicles (supported by CRRI) has immensely curbed the pollution. Photography technique for anti-highway-noise legislation which prohibits noise levels exceeding 82 dB(passenger car), 92 dB (trucks). Introduction Sources of pollution Noise levels Impacts Measures Summary

Summary :

Summary Whether knowingly or unknowingly, everyone of us contribute to noise pollution . Identify the sources of noise pollution . Efforts shall be made to reduce the undesired noise levels from (unwanted) noise generating sources. Introduction Sources of pollution Noise levels Impacts Measures Summary

Summary :

The public may complain to the statutory Board for violation of noise level limits by any noise generator. Summary

Concluding remarks :

It is high time that everyone should do this bit in curbing the noise pollution, which is otherwise becoming as effective as SLOW POISONING . “Nature has for every one’s need but for no one’s greed” Concluding remarks

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T h a n k y o u

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References [1] www.spectro. in / noise - pollution - survey .html [2] www. india environmentportal.org. in [3] Environmental noise pollution by Dr.Vijendra Mahandiyan [4] www.surreycomet.co.uk/.../4523457. Heathrow _ noise _ pollution [5] www.cpcb.nic.in/divisionsofheadoffice/pci2/ Noise - vehicle .pdf