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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 |
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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 |
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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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Note: |
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BS BS5228 (1997) Part 1 Noise and Vibration
Control on Construction and open sites |
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Appendix
4.12 |
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Assumed Powered Mechanical Equipment for Sewer Construction
(With the Use of Quiet Equipment and Restriction on Number of Plant
Operating) |
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Breaking up pavement |
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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) |
|
Kick Ripper, Saw-and life
method |
R2 |
1 |
103 |
100% |
103 |
103.0 |
103.00 |
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Excavation of Trench |
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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 |
1 |
97 |
100% |
97 |
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Hand-held breaker |
CNP 024 |
1 |
108 |
100% |
108 |
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Air
Compressor |
BS C.7, item 17 |
1 |
90 |
100% |
90 |
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Lorry (mini) |
BS C.8, item 25 |
1 |
96 |
100% |
96 |
108.6 |
108.64 |
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Installation of Pipes and
Bedding |
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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 |
1 |
99 |
100% |
99 |
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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 |
Sub-total |
Total SWL |
Total SWL |
|
(PME) |
|
|
dB(A) |
% |
SWL dB(A) |
dB(A) |
dB(A) |
|
Compactor |
CNP 050 |
1 |
105.0 |
100% |
105.0 |
105.0 |
105.00 |
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Reinstating Road Surface |
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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 |
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 24 |
1 |
95 |
100% |
95 |
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Vibratory poker, hand-held
(Electric) |
BS 5228, Table C.6, item 40 |
1 |
98 |
100% |
98 |
102.4 |
102.41 |
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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 |
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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 |
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Percussion Drill rig, equiped with
down the hole hammer |
CNP 072 |
1 |
110 |
100% |
110 |
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Generator |
CNP101 |
1 |
108 |
100% |
108 |
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Crane |
CNP 048 |
1 |
112 |
100% |
112 |
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Barge |
CNP 016 |
1 |
104 |
100% |
104 |
8.0 |
115.70 |
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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 |
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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 |
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Vibrating Hammer |
CNP 172 |
1 |
115 |
100% |
115 |
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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 |
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Direct-drive mixing system1 |
CNP 101 |
1 |
108 |
100% |
108 |
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Reclaimer2 |
CNP 282 |
1 |
103 |
100% |
103 |
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Note: |
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1 based on diesel
generator |
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2 based on water pump |
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Appendix 4.2 |
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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 |
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Equalisation transfer pump |
CNP 283 |
1 |
85 |
10 |
75 |
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Effluent lift pump |
CNP 283 |
1 |
85 |
10 |
75 |
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Sludge recycling pump |
CNP 283 |
2 |
85 |
10 |
78 |
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Sludge wasty pump |
CNP 283 |
2 |
85 |
10 |
78 |
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Sludge pump |
CNP 283 |
1 |
85 |
10 |
75 |
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Air blower |
estimate1 |
1 |
102 |
10 |
92 |
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Filter press |
estimate1 |
1 |
94 |
|
94 |
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Deodouriser |
estimate1 |
1 |
79 |
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79 |
18.6 |
96.49 |
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Assumed Operation
Equipment for Pumping Station |
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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 |
1 |
85 |
10 |
75 |
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|
Deodouriser |
CNP 241 |
1 |
79 |
|
79 |
10.4 |
80.46 |
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|
Note: |
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* Assume 10 dB(A) noise reduction for
equipment placing in enclosure |
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1 Estimated SWLs of the
equipment obtained from contractors |
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