TNAG-1613-FCO40-2221-Executive-Council-of-Hong-Kong-memoranda-and-minutes-of-meet-1987 — Page 246

4.

Construction Noise Permits for non-percussive piling are only required

for the carrying out of such work between 1900 hours and 0700 hours on

any two consecutive days or

at any time on general holidays (including

Sundays), and may only be issued in accordance with the Technical

Memorandum on Noise from Construction Works other than Percussive

Piling.

2.

DETERMINATION OF THE PERMITTED HOURS OF OPERATION FOR PERCUSSIVE

PILING WORKS

Location of the Most Affected Noise Sensitive Receiver

2.1

Step 1

(NSR)

The NSR which will be most affected by noise from the percussive piling

shall be identified.

For the purpose of this Technical Memorandum any

Memorandum any domestic premises,

hotel, hostel, temporary housing accommodation, hospital, medical

clinic, educational institution, place of public worship, library, court

of law or performing arts centre shall be considered to be a NSR. Any other premises or place, not being in the nature of industrial premises,

which is considered by the Authority to have a similar sensitivity to

noise as the premises and places above shall also be considered to be a

NSR. Any premises or place shall, however, be considered to be a NSR

only when it is in use for its intended purpose.

2.2 Step 2 Determination of the Accep' able Noise Level (ANL) for

the Noise Sensitive Receiver (NSR)

The Authority shall determine the appropriate ANL for the NSR under

consideration from Table 1. If Table 1 is not directly applicable to

the NSR under consideration the Authority may make use of such ANL as it

considers appropriate.

If in the opinion of the Authority the NSR will be materially affected

by noise from percussive piling associated with more than one CNP, the

Authority may make such correction to the ANL as it considers

appropriate having regard to standard acoustical principles and

practices.