Identification  of excessive  noise in  a  place of  work enables  employers  to  identify employees  who  may  be  exposed  to  excessive  noise  so  that  their  exposures  can  be assessed.

Identification of excessive noise shall involve participation of the affected employees and those who understand the works, operations or processes and have knowledge of the work situation.

Employer shall conduct identification of excessive noise for each area in the workplace by nature of activities/work process using this checklist provided below.

When it has been identified that excessive noise exists in the place of work   noise risk assessment shall be conducted.

The employer  shall  re-identify  excessive  noise, if there  has  been  a  change  in  the machinery,  equipment,  process,  work,  control  measures  or  operation,  in  which  any employee may be exposed to excessive noise. After the result of re-identification indicates possibility of excessive noise, employer shall conduct noise risk assessment.

The examples of changes are:

(a)         installation, modification or removal of machinery;

(b)         a change in workload or equipment operating conditions likely to cause a significant change in noise levels;

(c)          a change in building structure likely to affect noise levels; or

(d)         modification of working arrangements affecting the length of time employees would spend in noisy place of works.

If the  identification  result  shows  no  exposure  to  excessive  noise,  employer  shall  re-identify excessive noise not more than one year since the last identification of excessive noise.