Singapore legislation
Regulation 2
Regulation 2
Definitions
Subregulation 1
In these Regulations, unless the context otherwise requires —
Definition
“competent person”, in relation to any work to be carried out, means a person who has sufficient experience and training to perform the work;
Definition
“dB(A)” means decibels of A-weighted sound pressure level measured by an instrument with an electrical network having the characteristics specified by the International Electrotechnical Commission;
Definition
“dB(C)” means decibels of C-weighted sound pressure level measured by an instrument with an electrical network having the characteristics specified by the International Electrotechnical Commission;
Definition
“equivalent sound pressure level”, in relation to a fluctuating sound pressure level, means a constant sound pressure level measured over a duration of time which has the same cumulative acoustic energy as the fluctuating sound pressure level measured over the same duration;
Definition
“peak sound pressure level” means the absolute maximum or highest C-weighted sound pressure level of any continuous, intermittent, instantaneous or impact noise;
Definition
“relevant person” means a person at work in a workplace who is exposed or is likely to be exposed to excessive noise;
Definition
“responsible person”, in relation to a relevant person, means —
his employer; or
the principal under whose direction the relevant person carries out the work in the workplace.
Subregulation 2
For the purposes of these Regulations —
a person shall be deemed to be exposed to excessive noise, if the noise that he would be exposed to, when not wearing any hearing protector, exceeds —
the permissible exposure limit for noise specified in the First Schedule;
an equivalent sound pressure level of 85 dB(A) over an 8-hour work day, in any case where the noise is at a fluctuating sound pressure level; or
a peak sound pressure level exceeding 140 dB(C); and
sound pressure level shall be calculated according to the following formula:where SPLis the sound pressure level;logis the common logarithm;Pis the sound pressure; andPois the standard reference pressure of 20 microPascals