LEGISLATION
Western Cape Noise Control Regulations PN200/2013Western Cape Noise Control Regulations PN200/2013
Regulation 2
Prohibition of disturbing noise
(a) cause a disturbing noise; or
(b) allow a disturbing noise to be caused by any person, animal, machine, device,
apparatus, vehicle, vessel or model aircraft, or any combination thereof.
Regulation 5
Noise from machinery in residential areas
ventilation or air conditioning equipment, or any similar device, in a residential area if the
noise on the property projection plane exceeds 50 dBA or exceeds the residual noise level by
more than 5 dBA, except if authorised by the local authority or in an emergency.
Regulation 3
nuisance.
GENERATOR NOISE:
densely populated areas.
• generator engines create noise from both their mechanical and combustion
forces These sounds range from 100 121 dB depending on the size of the
engine Cooling fans are also a big source of noise pollution They produce
noise by moving air at high speeds as it passes through the engine and
radiator Cooling fans produce noise at levels varying from 100 105 dB at a
distance of one meter Alternators cause noise from the friction of the cooling
air and the brushes oscillating between 80 90 dBA Inductive noise is caused
by fluctuations in the current of the winding of the alternator that causes a
mechanical noise that varies between 80 90 dB at a meter Without an
exhaust muffler, engine exhaust noise ranges from 120 130 dBA or more, but
can be reduced by at least 15 dBA with a standard muffler Mechanical
vibrations of the different parts and structural components will also add to the
radiating sounds.
Quieter options
speed. (Diesel/petrol)
• Water cooled engines are quieter than air cooled gens.
• Newer technology generators are quieter and more fuel efficient. Newer generators also
focus more on smooth running engines and vibration reduction. Inverter type generators
are an example.
Mufflers and Silencers
types of mufflers including chamber type and spiral type Chamber type
mufflers are more effective while spiral type mufflers are more compact
• There are three types of silencers including reactive, absorptive, and
combination Reactive silencers use three chambers to help trap noise and
work best for low to mid range sounds Absorptive silencers use fiberglass
insulation to absorb high frequency sounds Combination silencers combine
designs of reactive and absorptive silencers to muffle a wide range of sounds
The only downfall to silencers is that they can possibly restrict airflow to some
degree and can impact performance Silencers are broken down into eight
categories of noise dampening.
Insulation, baffles and anti-vibration devices
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