Statistics Act, 1999
R 385
Environment Conservation Act, 1989 (Act No. 73 of 1989)RegulationsNoise Control1. Definitions |
In these Regulations any word or expression to which a meaning has been assigned in the Act, shall have the meaning so assigned to it and, unless the context otherwise indicates-
"ambient sound level"
means the reading on an integrating impulse sound level meter taken at a measuring point in the absence of any alleged disturbing noise at the end of a total period of at least 10 minutes, after such meter had been put into operation;
"animal"
also includes birds and poultry;
"controlled area"
means a piece of land designated by a local authority where, in the case of-
| a) | road transport noise in the vicinity of a road- |
| i) | the reading on an integrating impulse sound level meter, taken outdoors at the end of a period extending from 06:00 to 24:00 while such meter is in operation, exceeds 65 dBA; or |
| ii) | the equivalent continuous "A"-weighted sound pressure level at a height of at least 1,2 metres, but not more than 1,4 metres, above the ground for a period extending from 06:00 to 24:00 as calculated in accordance with SABS 0210-1986, titled: "Code of Practice for calculating and predicting road traffic noise", published under Government Notice No. 358 of 20 February 1987, and projected for a period of 15 years following the date on which the local authority has made such designation, exceeds 65 dBA; |
| b) | aircraft noise in the vicinity of an airfield, the calculated noisiness index, projected for a period of 15 years following the date on which the local authority has made such designation, exceeds 65 dBA; or |
| c) | industrial noise in the vicinity of an industry- |
| i) | the reading on an integrating impulse sound level meter, taken outdoors at the end of a period of 24 hours while such meter is in operation, exceeds 61 dBA; or |
| ii) | the calculated outdoor equivalent continuous "A"-weighted sound pressure level at a height of at least 1,2 metres, but not more than 1,4 metres, above the ground for a period of 24 hours, exceeds 61 dBA; |
"dBA"
means the value of the sound pressure level in decibels, determined using a frequency weighting network A, and derived from the following equation:
"disturbing noise"
means 'n noise level which exceeds the zone sound level or, if no zone sound level has been designated, a noise level which exceeds the ambient sound level at the same measuring point by 7 dBA or more;
"erect"
also means alter, convert, extend or re-erect;
"integrating impulse sound level meter"
means a device which integrates a function of the root mean square value of sound pressure over a period of time while it is set on "l"-time weighting and indicates the result in dBA;
"measuring point"
relating to-
| a) | a piece of land from which an alleged disturbing noise emanates, means a point outside the property projection plane where an alleged disturbing noise, in the opinion of a local authority, shall be measured in accordance with the provisions of regulation 6; |
| b) | a building with more than one occupant, means a point in or outside the building where an alleged disturbing noise, in the opinion of a local authority, shall be measured in accordance with the provisions of regulation 6; and |
| c) | a stationary vehicle, means a point as described in SABS 0181-1981, titled: "Code of Practice for the measurement of noise emitted by road vehicles when stationary", published under General Notice 463 of 9 July 1982, where a measuring microphone shall be placed; |
"noise level"
means the reading on an integrating impulse sound level meter taken at a measuring point in the presence of any alleged disturbing noise at the end of a total period of at least 10 minutes, after such meter had been put into operation, and, if the alleged disturbing noise has a discernible pitch, to which 5 dBA has been added;
"noise nuisance"
means any sound which disturbs or impairs or may disturb or impair the convenience or peace of any person;
"noisiness index"
means a number expressed in dBA as defined in SABS 0117-1974, titled: "Code of Practice for the determination and limitation of disturbance around an aerodrome due to noise from aeroplanes", published under Government Notice No. 151 of 1 February 1985;
"plant"
means a refrigeration machine, air-conditioners, fan system, compressor, power generator or pump;
"property projection plane"
means a vertical plane on, and including the boundary line of a piece of land defining the boundaries of such piece of land in space;
"recreational vehicle"
also means--
| a) | an off-road vehicle, scrambler, dune buggy or ultra-light aircraft; |
| b) | a model aircraft, vessel or vehicle; |
| c) | any aircraft or helicopter used for sport or recreational purposes; or |
| d) | any other conveyance or model which in the opinion of a local authority is a recreational vehicle; |
"sound level"
means the reading on a sound level meter taken at a measuring point;
"sound level meter"
means a device measuring sound pressure while it is set on "F"-time weighting and indicates the result in dBA;
"the Act"
means the Environment Conservation Act, 1989 (Act No. 73 of 1989);
"zone sound level"
means a derived dBA value determined indirectly by means of a series of measurements, calculations or table readings and designated by a local authority for an area.
