Noise generated from electrical & mechanical systems in commercial and industrial premises is controlled under the Noise Control Ordinance (Cap. 400) by means of a Noise Abatement Notice mechanism. “Technical Memorandum for the Assessment of Noise from Places other than Domestic Premises, Public Places or Construction Sites” (TM), as issued under Section 10 of the Noise Control Ordinance, sets out objective noise control criteria in the form of Acceptable Noise Levels (ANL). Noise Abatement Notices may be served on owners or operators of the systems if the emitted noise measured at a Noise Sensitive Receiver (NSR), such as a residential building or a school, does not comply with the noise control criteria.
A brief extract of the technical noise assessment and criteria from the TM is included in Appendix I for easy reference.