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CONSTRUCTION
OF PUMPING STATIONS |
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Foundation |
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Excavation |
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Powered Mechanical Equipment |
Reference |
No. Items |
SWL/Item |
On-Time |
Sub-total |
Total SWL |
Total SWL |
|
|
(PME) |
|
|
dB(A) |
% |
SWL dB(A) |
dB(A) |
dB(A) |
|
|
Excavator (mini) |
BS C.3, item 108 |
2 |
97 |
100% |
100 |
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Hydraulic breaker, excavator mounted |
BS C8, item 13 |
1 |
110 |
100% |
110 |
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Lorry (mini) |
BS C.8, item 25 |
2 |
96 |
100% |
99 |
110.7 |
110.72 |
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Formwork, reinforcement & fixing |
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Powered Mechanical Equipment |
Reference |
No. Items |
SWL/Item |
On-Time |
Sub-total |
Total SWL |
Total SWL |
|
|
(PME) |
|
|
dB(A) |
% |
SWL dB(A) |
dB(A) |
dB(A) |
|
|
Mobile crane (mini) |
BS C.7, item 118 |
2 |
99 |
100% |
102 |
102.5 |
102.53 |
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Bar bender and cutter (electric) |
CNP 021 |
2 |
90 |
100% |
93 |
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Concreting |
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Powered Mechanical Equipment |
Reference |
No. Items |
SWL/Item |
On-Time |
Sub-total |
Total SWL |
Total SWL |
|
|
(PME) |
|
|
dB(A) |
% |
SWL dB(A) |
dB(A) |
dB(A) |
|
|
Lorry (mini) |
BS C.8, item 25 |
2 |
96 |
100% |
99 |
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|
Concrete mixer (electric) |
CNP 045 |
2 |
96 |
100% |
99 |
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Air Compressor |
BS C.7, item 24 |
2 |
95 |
100% |
98 |
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Vibratory poker, hand-held (electric) |
BS 5228, Table C.6, item 32 |
2 |
100 |
100% |
103 |
106.3 |
106.26 |
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Backfilling |
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Powered Mechanical Equipment |
Reference |
No. Items |
SWL/Item |
On-Time |
Sub-total |
Total SWL |
Total SWL |
|
|
(PME) |
|
|
dB(A) |
% |
SWL dB(A) |
dB(A) |
dB(A) |
|
|
Compactor |
CNP 050 |
2 |
105 |
100.0% |
108 |
108.0 |
108.01 |
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Superstructural Works |
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Formwork, reinforcement & fixing |
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|
Powered Mechanical Equipment |
Reference |
No. Items |
SWL/Item |
On-time |
Sub-total |
Total SWL |
Total SWL |
|
|
(PME) |
|
|
dB(A) |
% |
SWL dB(A) |
dB(A) |
dB(A) |
|
|
Mobile crane (mini) |
BS C.7, item 118 |
2 |
99 |
100% |
102 |
102.5 |
102.53 |
|
|
Bar bender and cutter (electric) |
CNP 021 |
2 |
90 |
100% |
93 |
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Concreting |
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|
Powered Mechanical Equipment |
Reference |
No. Items |
SWL/Item |
On-Time |
Sub-total |
Total SWL |
Total SWL |
|
|
(PME) |
|
|
dB(A) |
% |
SWL dB(A) |
dB(A) |
dB(A) |
|
|
Lorry (mini) |
BS C.8, item 25 |
2 |
96 |
100% |
99 |
|
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|
Concrete mixer (electric) |
CNP 045 |
2 |
96 |
100% |
99 |
|
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|
Air Compressor |
BS C.7, item 24 |
2 |
95 |
100% |
98 |
|
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|
|
Vibratory poker, hand-held (electric) |
BS 5228, Table C.6, item 32 |
2 |
100 |
100% |
103 |
106.3 |
106.26 |
|
|
Note: |
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|
BS
BS5228 (1997) Part 1 Noise and Vibration Control on Construction and
open sites |
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|
Appendix 4.15a |
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Assumed Powered Mechanical Equipment for
Sewer Construction (With the Use of Quiet Equipment, Restriction on Number of
Plant Operating and Use of Noise Screening Structures) |
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Breaking up pavement |
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|
Powered Mechanical
Equipment |
Reference |
No. Items |
SWL/Item |
On-Time |
Barrier Attenuation |
Sub-total |
Total SWL |
Total SWL |
|
(PME) |
|
|
dB(A) |
% |
dB(A) |
SWL dB(A) |
dB(A) |
dB(A) |
|
Kick Ripper, Saw-and
life method |
R2 |
1 |
103 |
100% |
5 |
98 |
98.0 |
98.00 |
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Excavation of Trench |
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|
Powered Mechanical
Equipment |
Reference |
No. Items |
SWL/Item |
On-Time |
Barrier Attenuation |
Sub-total |
Total SWL |
Total SWL |
|
(PME) |
|
|
dB(A) |
% |
dB(A) |
SWL dB(A) |
dB(A) |
dB(A) |
|
Excavator
(mini) |
BS C.3, item 108 |
1 |
97 |
100% |
|
97 |
|
|
|
Hand-held breaker |
CNP 024 |
1 |
108 |
100% |
10 |
98 |
|
|
|
Air
Compressor |
BS C.7, item 17 |
1 |
90 |
100% |
|
90 |
|
|
|
Lorry
(mini) |
BS C.8, item 25 |
1 |
96 |
100% |
|
96 |
102.1 |
102.12 |
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|
Installation of Pipes
and Bedding |
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|
Powered Mechanical
Equipment |
Reference |
No. Items |
SWL/Item |
On-Time |
Barrier Attenuation |
Sub-total |
Total SWL |
Total SWL |
|
(PME) |
|
|
dB(A) |
% |
dB(A) |
SWL dB(A) |
dB(A) |
dB(A) |
|
Mobile crane (mini) |
BS C.7, item 118 |
1 |
99 |
100% |
|
99 |
|
|
|
Lorry (mini) |
BS C.8, item 25 |
1 |
96 |
100% |
|
96 |
100.8 |
100.76 |
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|
Backfilling |
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|
Powered Mechanical
Equipment |
Reference |
No. Items |
SWL/Item |
On-Time |
Barrier Attenuation |
Sub-total |
Total SWL |
Total SWL |
|
(PME) |
|
|
dB(A) |
% |
dB(A) |
SWL dB(A) |
dB(A) |
dB(A) |
|
Compactor |
CNP 050 |
1 |
105.0 |
100% |
5 |
100.0 |
100.0 |
100.00 |
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|
Reinstating Road
Surface |
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|
Powered Mechanical
Equipment |
Reference |
No. Items |
SWL/Item |
On-time |
Barrier Attenuation |
Sub-total |
Total SWL |
Total SWL |
|
(PME) |
|
|
dB(A) |
% |
dB(A) |
SWL dB(A) |
dB(A) |
dB(A) |
|
Lorry (mini) |
BS C.8, item 25 |
1 |
96 |
100% |
|
96 |
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|
|
Concrete
mixer (electric) |
CNP 045 |
1 |
96 |
100% |
|
96 |
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|
Air
Compressor |
BS C.7, item 17 |
1 |
90 |
100% |
|
90 |
|
|
|
Vibratory poker,
hand-held (Electric) |
BS 5228, Table C.6, item 40 |
1 |
98 |
100% |
|
98 |
101.8 |
101.84 |
|
Note: |
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|
BS BS5228 (1997) Part 1 Noise and Vibration
Control on Construction and open sites |
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|
R2 -
Commercially available quiet concrete demolition method in Hong Kong |
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DREDGING |
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Powered Mechanical Equipment |
Reference |
No. Items |
SWL/Item |
On-time |
|
Sub-total |
Total SWL |
Total SWL |
|
(PME) |
|
|
dB(A) |
% |
|
SWL dB(A) |
dB(A) |
dB(A) |
|
Derrick barge |
CNP 061 |
1 |
104 |
100% |
|
104 |
|
|
|
Dredger, grab |
CNP 063 |
1 |
112 |
100% |
|
112 |
4.0 |
112.64 |
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|
Submarine Outfall |
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|
Erection of Steel Working Platflorm |
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|
Powered Mechanical Equipment |
Reference |
No. Items |
SWL/Item |
On-time |
|
Sub-total |
Total SWL |
Total SWL |
|
(PME) |
|
|
dB(A) |
% |
|
SWL dB(A) |
dB(A) |
dB(A) |
|
Setting up Steel Working
Platform |
|
|
|
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|
|
Air Compressor |
CNP 003 |
1 |
104 |
100% |
|
104 |
|
|
|
Percussion Drill rig, equiped
with down the hole hammer |
CNP 072 |
1 |
110 |
100% |
|
110 |
|
|
|
Generator |
CNP101 |
1 |
108 |
100% |
|
108 |
|
|
|
Crane |
CNP 048 |
1 |
112 |
100% |
|
112 |
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|
|
Barge |
CNP 016 |
1 |
104 |
100% |
|
104 |
8.0 |
115.70 |
|
Grouting |
|
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|
Generator |
CNP101 |
1 |
108 |
100% |
|
108 |
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|
|
Grout Pump |
CNP 106 |
1 |
105 |
100% |
|
105 |
4.0 |
109.76 |
|
Installation of Steel Casing in Rock |
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|
|
Air Compressor |
CNP 003 |
1 |
104 |
100% |
|
104 |
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|
|
Percussion Drill rig, equiped
with ODEX |
CNP 072 |
1 |
110 |
100% |
|
110 |
4.0 |
110.97 |
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|
Erection of Scaffold |
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|
Powered Mechanical Equipment |
Reference |
No. Items |
SWL/Item |
On-time |
|
Sub-total |
Total SWL |
Total SWL |
|
(PME) |
|
|
dB(A) |
% |
|
SWL dB(A) |
dB(A) |
dB(A) |
|
Generator |
CNP101 |
1 |
108 |
100% |
|
108 |
|
|
|
Vibrating Hammer |
CNP 172 |
1 |
115 |
100% |
|
115 |
|
|
|
Barge |
CNP 016 |
1 |
104 |
100% |
|
104 |
5.8 |
116.07 |
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|
Drilling and Installation of HDPE Pipeline |
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|
Powered Mechanical Equipment |
Reference |
No. Items |
SWL/Item |
On-time |
|
Sub-total |
Total SWL |
Total SWL |
|
(PME) |
|
|
dB(A) |
% |
|
SWL dB(A) |
dB(A) |
dB(A) |
|
Horizontal Drilling System1 |
CNP 101 |
1 |
108 |
100% |
|
108 |
5.8 |
|
|
Direct-drive mixing system1 |
CNP 101 |
1 |
108 |
100% |
|
108 |
|
Reclaimer2 |
CNP 282 |
1 |
103 |
100% |
|
103 |
|
Note: |
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|
1 based on
diesel generator |
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2 based on water
pump |
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Appendix 4.16 |
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|
Assumed
Operation Equipment for STW |
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|
Powered Mechanical Equipment |
Reference |
No. Items |
SWL/Item |
Screening* |
|
Sub-total |
Total SWL |
Total SWL |
|
(PME) |
|
|
dB(A) |
dB(A) |
|
SWL dB(A) |
dB(A) |
dB(A) |
|
Submersible water pump |
CNP 283 |
2 |
85 |
10 |
|
78 |
|
|
|
Equalisation transfer pump |
CNP 283 |
1 |
85 |
10 |
|
75 |
|
|
|
Effluent lift pump |
CNP 283 |
1 |
85 |
10 |
|
75 |
|
|
|
Sludge recycling pump |
CNP 283 |
2 |
85 |
10 |
|
78 |
|
|
|
Sludge wasty pump |
CNP 283 |
2 |
85 |
10 |
|
78 |
|
|
|
Sludge pump |
CNP 283 |
1 |
85 |
10 |
|
75 |
|
|
|
Air blower |
estimate1 |
1 |
102 |
10 |
|
92 |
|
|
|
Filter press |
estimate1 |
1 |
94 |
|
|
94 |
|
|
|
Deodouriser |
estimate1 |
1 |
79 |
|
|
79 |
18.6 |
96.49 |
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