Group members: Cham Pok Man,Gary (1)

Chan Ho Yuen,Davy(2)

Au Wun,Cathy (22)

Fok Kwan Suen,Connie (27)

Leung Yin Hang,Shirley(32)

Ng Wing Ning,Margo(38)

Definition

Sources

Effects

Solutions

Definition of Noise Pollution

• It means the sounds above the level that people cannot accept or tolerate.

• The unit for sounds is decibel (dB). The sounds that above 65dB are noises.

<<<Daily examples of sounds at different levels

Limit of Sound Level (dB)

Time of people can withstand

(per day)

85 4 hours

90 2 hours

93 30 min

97 15 min

103 7 min

110 3 min

120 1.5 min or below

Time of people can withstand different levelof noises

Sources of Noise Pollution

Noise pollution is mainly caused by the following factors:

• Traffic Noise• Construction Noise • Industrial Noise• Aircraft Noise• Domestic Noise

Traffic Noise

• Noise is given off from the engines or horns of vehicles like buses and cars.

• When they travel at a higher speed, the noise is greater.

Construction and Industrial Noise

• The construction work (e.g. piling) usually lasts for 3-5 hours per day and produces a lot of noise.

• Some noise is generated from machinery and air-conditioning in factories.

Aircraft and Other Noise

• During the take-off and landing of flights, the noise produced by planes is great.

• Shops on the street usually play music or promote products at a high volume.

• Noise is also produced by the public in densely-populated districts.

Effects on human

•Disturbing people's thoughts and feelings•Causing different diseases

Effect on government and industry

•Time lost on the job •Payments of worker's compensation for diseases

•A result of society's rising levels of noise

•A common occupational and environmental hazard

•The risk has spread to young adults

•Heavy industrial area should be separated from residential areas

•Using noise attenuating

materials and construction

techniques

-Developing quieter aircraft

-Controlling land development around new airports

-Restricting work hours in designated areas

-Regulating machines used

What You Can Do To Help Reducing Noise

Pet nuisance

•you must prevent your pets from causing any noise nuisance to your neighbours.

•Don't let your dog bark or whine or leave it alone for long periods.

Musical noise

•Keep the volume as low as possible

•When not using headphones or an earpiece, set the bass control at a low level as the "bass beat" can be particularly irritating.

•Avoid practicing early in the morning or during the late evening/night.

•If the instrument has an amplifier, turn the volume down or preferably use personal headphones.

What You Can Do To Help Reducing Noise

What You Can Do To Help Reducing Noise

Renovation noise

•Don't carry out renovation works between 7 p.m. and 7 a.m. or on Sundays or general holidays; otherwise, obtain a valid Construction Noise Permit from the Environmental Protection Department before carrying out the works.

•Don't leave powered tools running idly

•Complete the work as quickly as possible

•Abide by any house rules imposed by the building management in respect of renovation noise such as restriction on working hours.

Others

•Ensure you do not create excessive noise disturbance while playing outside, especially by yelling and engaging in noisy pastimes.

•Keep your electrical appliance in good maintenance condition to avoid causing noise

What You Can Do To Help Reducing Noise

http://www.info.gov.hk/hkcosh/

http://www3.sympatico.ca/noise/

http://www.nonoise.org/

http://www.oshc.org.hk/eng/