5.2. ES Vol 1B (Binder 3) - Appendix 12.1 Operational Noise Calculations and Results

7/31/2019 5.2. ES Vol 1B (Binder 3) - Appendix 12.1 Operational Noise Calculations and Results

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Appendix 12.1

Operational Noise Calculations and Results


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Operational Noise Calculations and Results

Absorption Coefficient/SRI Data

AbsorptionCoefficient Data

Reference 63 125 250 500 1000 2000 4000 8000

Standard brickwork A 0.05 0.05 0.05 0.04 0.02 0.04 0.05 0.05

Solid timber door B 0.14 0.14 0.14 0.10 0.06 0.08 0.10 0.10

Ventilation grille perm2

C 0.60 0.60 0.60 0.60 0.60 0.60 0.60 0.60

20g galvanised sheetsteel

A 0.35 0.35 0.39 0.44 0.49 0.54 0.57 0.57

Smooth unpaintedconcrete

B 0.01 0.01 0.01 0.02 0.02 0.02 0.05 0.05

SOUNDREDUCTION DATA

Reference 63 125 250 500 1000 2000 4000 8000

Single leaf block

work fair faced D 36 37 40 46 54 56 56 56Solid core wooddoor, no seals

around perimeterE 19 22 26 24 23 20 20 20

Ventilation grille 10 10 10 10 10 10 10 10


F 8 14 20 26 32 38 38 38

REFERENCES

Danish Buildings Research Institute (derived from other sources - ODEON) C

Bobran, H.W., "Handbuch der Bauphysik" Verlag Ilstein Berlin 1973 (Odeon) B

Flakt Woods, Practical guide to noise control. 5th Edition A

Acoustics in the Built Environment, Duncan Templeton, Butterworth Architecture, 1993 D

NRCC, Noise Control in Buildings, Cyril M.Harris E

Building Bulletin 93 F


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Noise Breakout from Gas Compressor HousingRoom Constant Calculation

North Wall Elevation

Dimensions

Total Area

31 x 5.8 = 179.8m2

Assumptions

2 x Roller shutter doors 7.2 x 3.8 = 27.4m2 x 2 = 54.8m2

1 Access door 2.4 x 1.2 = 2.9m2

Total brick wall area 179.8 54.8 2.9 = 122.1m2

South Wall Elevation

Dimensions

Total Area

31 x 5.8 = 179.8m2

Assumptions

Wall is all brickwork with x2 ventilation grilles 1.5 x 9.5 = 14.25 x 2 = 28.5m2

East/West Wall Elevation

Total Area

11.8 x 5.8 = 68.4m2

(11.8 x 2.5)/2 = 14.8m2

Total area = 68.4 + 14.8 = 83.2m2


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Ceiling Area

Total Area

2.52 + 4.152 = 23.5 SQROOT 23.5 =4.84.8 x 31 = 148.8 x 2 = 297.6m2

Assumptions

No ceiling treatment applied

BRICKTIMBERDOOR

ROLLERSHUTTER

DOOR

CONCRETEFLOOR

CEILING LOUVRES

NORTH 122.1 2.9 54.8 0 297.6 0SOUTH 151.3 0 0 0 0 28.5EAST 83.2 0 0 0 0 0WEST 83.2 0 0 0 0 0FLOOR 0 0 0 365.8 0 0CEILING 0 0 0 0 0 0TOTAL 468.3 2.9 54.8 365.8 297.6 28.5

TOTAL SURFACE AREA 1217.9

OCTAVE BAND CENTRE FREQUENCY63 125 250 500 1000 2000 4000 8000

WALLS 23.4 23.4 23.4 18.7 9.4 18.7 23.4 23.4CEILING 3.0 3.0 3.0 6.0 6.0 6.0 8.9 8.9

TIMBER DOOR 0.4 0.4 0.4 0.3 0.2 0.2 0.3 0.3FLOOR 3.7 3.7 3.7 7.3 7.3 7.3 18.3 18.3VENTS 17.1 17.1 17.1 17.1 17.1 17.1 17.1 17.1

ROLLER DOOR 0.5 0.5 0.5 1.1 1.1 1.1 1.6 1.60.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

TOTAL48 1 48 1 48 1 50 5 41 0 50 4 69 7 69 7


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Reverberant Sound Pressure Level Inside Building

Assumed Contents of Compressor Building 2 x Mopico compressors@ 107.2Lw and 6 x control valves @ 75 Lw

Total internal sound power level

107.2 +107.2 = 110.2dB

75+75+75+75+75+75 = 82.8dB

110.2 + 82.8 = 110.2dB (control valves are negligible)

63 125 250 500 1000 2000 4000 8000Total Internal SoundPower Level 110.2 110.2 110.2 110.2 110.2 110.2 110.2 110.2ROOM CONSTANT 50.1 50.1 50.1 52.7 42.4 52.6 73.9 73.9

1 4/Rc 0.08 0.08 0.08 0.08 0.09 0.08 0.05 0.05

2Q {DIRECTIVITYFACTOR} 2 2 2 2 2 2 2 2

3 Q/{4X3.142X.r SQ} 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.044 3 + 1 0.12 0.12 0.12 0.12 0.13 0.12 0.09 0.095 10 X LOG [4] -9.2 -9.2 -9.2 -9.4 -8.7 -9.4 -10.3 -10.36 SWL + [5] 101.0 101.0 101.0 100.8 101.5 100.8 99.9 99.9

Total Internal Reverberant Sound Pressure Level @ 500Hz 100.8 dB


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NORTHERN WALL 500HzSingle leaf brick 46

Timber Door 24

Vent 1020g galvanised sheet

steel 26

total Area 179.8

Wall 122.1Door 2.9Vent 0

Roller Shutter Door 54.8000

T=10^(-C5/10) 0.00002512T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00306701

Area x T 0.01154511Area x T 0.00000000Area x T 0.13765138Area x T 0.00000000Area x T 0.00000000Area x T 0.00000000

Sum 0.00084685

COMPOSITE SRI 30.7REVERBERANT SPL 100.8

EXTERNAL SPL 64.1


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SOUTHERN WALL 500HzSingle leaf brick 46

Timber Door 24


steel 26

total Area 179.8

Wall 151.3Door 0Vent 28.5

Roller Shutter Door 0000

T=10^(-C5/10) 0.00002512T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00380048


Sum 0.01587208


EXTERNAL SPL 76.8


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EASTERN/WESTERNWALL

500

Single leaf brick 46

Timber Door 24Vent 10

20g galvanised sheetsteel 26

total Area 83.2Wall 83.2Door 0Vent 0


T=10^(-C5/10) 0.00002512T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00208989Area x T 0.00000000Area x T 0.00000000Area x T 0.00000000Area x T 0.00000000Area x T 0.00000000Area x T 0.00000000

Sum 0.00002512COMPOSITE SRI 46.0

REVERBERANT SPL 100.8EXTERNAL SPL 48.8

TOTAL EXTERNAL SPL


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ROOF 500Single leaf brick 46

Timber Door 24


steel 26

total Area 297.6

Wall 0Door 0Vent 0


T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00000000


Sum 0.00251189


EXTERNAL SPL 68.8TOTAL EXTERNAL SPL


11/53

Noise Breakout from Seawater Pumping StationRoom Constant Calculation

North/South Wall Elevation

Dimensions

Total Area

40 x 5.0 = 200.0m2

Assumptions

5 Access door 2.4 x 1.2 = 2.9m2 x 5 = 14.6m2

Total brick wall area 200 14.6 = 185.4m2

East Wall Elevation

Total Area

13.5 x 5.0 = 67.5m2

(13.5 x 2)/2 = 13.5m2

Total area = 67.5 + 13.5 = 81.0m2

Assumptions

Wall has roller shutter door and 2 access doors

Roller Door 4 x 4.4 = 18.0m2

Access Door 2.4 x 1.2 = 2.9m2 x 2 = 5.8m2

Total brick area = 81 18 5.8 = 57.2m2

West Wall Elevation

Total Area

13.5 x 5.0 = 67.5m2


12/53

Floor Area

Total Area

40.0. x 13.5 = 540m2

AssumptionsFloor is all unpainted concrete

Ceiling Area

Total Area

2.02 + 6.752 = 49.6 SQROOT 49.6 =7.07.0 x 40 = 280 x 2 = 560m2

AssumptionsNo ceiling treatment applied

BRICKTIMBERDOOR

ROLLERSHUTTER

DOOR

CONCRETEFLOOR

CEILING LOUVRES

NORTH 185.4 14.6 0 0 0 0SOUTH 185.4 14.6 0 0 0 0EAST 57.2 5.8 18.0 0 0 0WEST 75.2 5.8 0 0 0 0FLOOR 0 0 0 540.0 0 0CEILING 0 0 0 0 560.0 0TOTAL 503.2 40.8 18.0 540.0 560.0 0

TOTAL SURFACE AREA 1662.0


WALLS 25.2 25.2 25.2 20.1 10.1 20.1 25.2 25.2CEILING 5.6 5.6 5.6 11.2 11.2 11.2 16.8 16.8

TIMBER DOOR 5.7 5.7 5.7 4.1 2.4 3.3 4.1 4.1FLOOR 5.4 5.4 5.4 10.8 10.8 10.8 27.0 27.0

LOUVRES 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0ROLLER DOOR 0 2 0 2 0 2 0 4 0 4 0 4 0 5 0 5


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Assumed Contents of Seawater Pumping Station Building 7 x Salt Water Pumps@ 85.0Lw and Electrical Switch Gear @ 75 Lw


85 x7 = 93.5dB

93.5 + 75.0 = 93.5dB (Switch Gear is negligible)

63 125 250 500 1000 2000 4000 8000Total Internal SoundPower Level 93.5 93.5 93.5 93.5 93.5 93.5 93.5 93.5ROOM CONSTANT 43.1 43.1 43.1 47.9 35.6 47.0 77.0 77.0

1 4/Rc 0.09 0.09 0.09 0.08 0.11 0.09 0.05 0.05


3 Q/{4X3.142X.r SQ} 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.044 3 + 1 0.13 0.13 0.13 0.12 0.15 0.12 0.09 0.09

5 10 X LOG [4] -8.8 -8.8 -8.8 -9.1 -8.2 -9.0-

10.4-

10.46 SWL + [5] 84.7 84.7 84.7 84.4 85.3 84.5 83.1 83.1

Total Internal Reverberant Sound Pressure Level is@500Hz 84.4 dB


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NORTHERN/SOUTHERNWALL

500


Timber Door 24Vent 10


26

000

total Area 200Wall 185.4Door 14.6Vent 0


T=10^(-C5/10) 0.00002512T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000





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EASTERN WALL 500Single leaf brick 46

Timber Door 24


steel26

000

total Area 81



T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00143680


Sum 0.00086100


EXTERNAL SPL 47.8


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WESTERN WALL 500Single leaf brick 46

Timber Door 24


steel26

000

total Area 81



T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00188894


Sum 0.00030838


EXTERNAL SPL 43.3


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Timber Door 24


steel26

000

total Area 560

Wall 0Door 0Vent 0


T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00000000


Sum 0.00251189


EXTERNAL SPL 52.4


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Noise Breakout from Pump HallRoom Constant Calculation

Wall 1 and 3

Dimensions

Total Area

24.5 x 5.0 = 122.5m2

Assumptions

All brick wall

Wall 2

Total Area

10.5 x 5.0 = 52.5m2

2.5 x 5.25 = 13.1m2

Total area = 52.5 + 13.1 = 65.6m2

Assumptions

All brick wall

Wall 4

Total Area

10.5 x 5.0 = 52.5m2

2.5 x 5.25 = 13.1m2

Total area = 52.5 + 13.1 = 65.6m2

Assumptions


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Ceiling Area

Total Area

2.52 + 5.252 = 33.8 SQROOT 33.8 =5.8m5.8 x 24.5 = 142.1 x 2 = 284.2m2


BRICKTIMBERDOOR

ROLLERSHUTTER

DOOR

CONCRETEFLOOR

CEILING LOUVRES

1 122.5 0 0 0 0 02 65.6 0 0 0 0 03 122.5 0 0 0 0 0

4 53.6 12.0 0 0 0 0FLOOR 0 0 0 257.3 0 0CEILING 0 0 0 0 284.2 0TOTAL 0

TOTAL SURFACE AREA


WALLS 0.05 0.05 0.05 0.04 0.02 0.04 0.05 0.05CEILING 0.35 0.35 0.39 0.44 0.49 0.54 0.57 0.57


LOUVRES 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6ROLLER DOOR 0.35 0.35 0.39 0.44 0.49 0.54 0.57 0.57

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0


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Assumed Contents of Seawater Pumping Station Building

12 x Salt Water Discharge Pumps@ 85.0 Lw and 12 x Control Valves @ 75.0 Lw


85 x12 = 95.8dB

75 x12 = 85.8dB

95.8 + 85.8 = 96.2dB

63 125 250 500 1000 2000 4000 8000Total Internal SoundPower Level 96.2 96.2 96.2 96.2 96.2 96.2 96.2 96.2

ROOM CONSTANT 139.7 139.7 154.6 173.1 182.0 212.8 248.1 248.1

1 4/Rc 0.03 0.03 0.03 0.02 0.02 0.02 0.02 0.02


3 Q/{4X3.142X.r SQ} 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.044 3 + 1 0.07 0.07 0.07 0.06 0.06 0.06 0.06 0.065 10 X LOG [4] -11.6 -11.6 -11.8 -12.0 -12.1 -12.3 -12.5 -12.56 SWL + [5] 84.6 84.6 84.4 84.2 84.1 83.9 83.7 83.7

Total Internal Reverberant Sound Pressure Level @500Hz 84.2 dB

Wall 3 not included as it is adjacent to ECE and Control Room


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Wall 1 500Single leaf brick 46

Timber Door 24


steel26

000

total Area 112.5

Wall 112.5Door 0Vent 0


T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00282587


Sum 0.00002512

COMPOSITE SRI 46.0REVERBERANT SPL 84.2EXTERNAL SPL 32.2


22/53

WALL 2 500Single leaf brick 46

Timber Door 24


steel26

000

total Area 65.6



T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00164780


Sum 0.00002512



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Timber Door 24


steel26

000

total Area 65.6



T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00134637


Sum 0.00074877



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Timber Door 24


steel26

000

total Area 284.2

Wall 0Door 0Vent 0


T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00000000


Sum 0.00251189



25/53

Noise Breakout from Booster Pump ECE RoomRoom Constant Calculation

Wall 1Dimensions

Total Area

12 x 2.5 = 30.0m2

Assumptions

1 doorway

Door - 2 x 2 = 4.0m2

Wall - 30 - 4 = 26.0m2

Wall 2Total Area

10.5 x 2.5 = 26.3m2

2.5 x 5.25 = 13.1m2

Total area = 26.3 + 13.1 = 39.4m

2

Assumptions

All brick wall with 1 doorway2.4 x 1.2 = 2.9m2Total brick wall area

39.4 2.9 = 36.5m2

Wall 3

Total Area

12.0 x 2.5 = 30.0m2


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Floor Area

Total Area

12.0. x 10.5 = 126m2


Ceiling Area

Total Area

52 + 5.252 = 52.6 SQROOT 52.5 = 7.3m7.3 x 12 = 87 x 2 = 174m2


BRICKTIMBERDOOR

ROLLERSHUTTER

DOOR

CONCRETEFLOOR

CEILING LOUVRES

1 26.0 4.0 0.0 0.0 0.0 0.02 36.5 2.9 0.0 0.0 0.0 0.03 30.0 0.0 0.0 0.0 0.0 0.0

4 39.4 0.0 0.0 0.0 0.0 0.0FLOOR 0.0 0.0 0.0 126.0 0.0 0.0CEILING 0.0 0.0 0.0 0.0 174.0 0.0TOTAL

TOTAL SURFACE AREA

OCTAVE BAND CENTRE FREQUENCY

63 125 250 500 1000 2000 4000 8000WALLS 6.6 6.6 6.6 5.3 2.6 5.3 6.6 6.6

CEILING 60.9 60.9 67.9 76.6 85.3 94.0 99.2 99.2TIMBER DOOR 1.0 1.0 1.0 0.7 0.4 0.6 0.7 0.7

FLOOR 3.7 3.7 3.7 7.4 7.4 7.4 18.6 18.6


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Assumed Contents of ECE Building

Electrical Control Equipment @75dB Lw

63 125 250 500 1000 2000 4000 8000

Total Internal SoundPower Level 75 75 75 75 75 75 75 75ROOM CONSTANT 80.7 80.7 89.5 103.6 111.3 127.1 153.0 153.0

1 4/Rc 0.05 0.05 0.04 0.04 0.04 0.03 0.03 0.03


3 Q/{4X3.142X.r SQ} 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04

4 3 + 1 0.09 0.09 0.08 0.08 0.08 0.07 0.07 0.07

5 10 X LOG [4]-

10.5-

10.5-

10.7 -11.1 -11.2 -11.5 -11.8 -11.86 SWL + [5] 64.5 64.5 64.3 63.9 63.8 63.5 63.2 63.2

Total Internal Reverberant Sound Pressure Level is 63.9 dB

Wall 3 not included as it is adjacent to ECE and Control Room


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Timber Door 24


steel26

000

total Area 26Wall 22Door 4Vent 0


T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00055262


Sum 0.00063373



29/53

WALL 3 and 4 500Single leaf brick 46

Timber Door 24


steel26

000



T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00075357


Sum 0.00002512



30/53

Roof 500Single leaf brick 46

Timber Door 24


steel26

000



T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00000000





31/53

Noise Breakout from Booster Pump Control RoomRoom Constant Calculation

Wall 1Dimensions

Total Area

5 x 1 = 5m2

5/2 = 2.5m2

2.5 + 5 = 7.5m2Assumptions

1 doorway

Door 2.4 x 1.2 = 2.9m2

Wall 7.5 2.9 = 4.6m2

Wall 2

Total Area

4 x 10 = 40.0m2

Assumptions

All brick wall with 1 doorway2.4 x 1.2 = 2.9m2Total brick wall area

40.0 2.9 = 37.1m2

Wall 3Same as wall 1 but with no door, all brick

7.5m2


32/53

Floor Area

Total Area

5.5 x 10 = 55m2


Ceiling Area

Total Area

52 x 12 = 26.0 SQROOT= 5.1m2

5.1 x 10 = 51m2


BRICKTIMBERDOOR

ROLLERSHUTTER

DOOR

CONCRETEFLOOR

CEILING LOUVRES

1 4.6 2.9 0 0 0 02 37.1 2.9 0 0 0 03 7.5 0 0 0 0 04 40.0 0 0 0 0 0

FLOOR 0 0 0 40 0 0CEILING 0 0 0 0 51 0TOTAL

TOTAL SURFACE AREA


63 125 250 500 1000 2000 4000 8000WALLS 4.5 4.5 4.5 3.6 1.8 3.6 4.5 4.5


FLOOR 3.7 3.7 3.7 7.4 7.4 7.4 18.6 18.6LOUVRES 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0


33/53


Assumed Contents of Control Room Building

Electrical Control Equipment @75dB Lw

63 125 250 500 1000 2000 4000 8000


1 4/Rc 0.14 0.14 0.13 0.11 0.11 0.09 0.07 0.07


3 Q/{4X3.142X.r SQ} 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04

4 3 + 1 0.18 0.18 0.17 0.15 0.15 0.13 0.11 0.115 10 X LOG [4] -7.4 -7.4 -7.7 -8.3 -8.3 -8.7 -9.7 -9.76 SWL + [5] 67.6 67.6 67.3 66.7 66.7 66.3 65.3 65.3


Wall 2 and 3 not included as it is adjacent to ECE and Pump Hall


34/53


Timber Door 24

Vent 1020g galvanised sheetsteel

26

000

total Area 7.5Wall 4.6Door 2.9Vent 0


T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00011555





35/53

WALL 3 and 4 500Single leaf brick 46

Timber Door 24


26

000



T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00100475





36/53


Timber Door 24


26

000



T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00000000





37/53

Noise Breakout from Switch Gear RoomRoom Constant Calculation

Wall 1Dimensions

Total Area

4.5 x 2.5 = 11.25m2

Assumptions

1 doorway

Door 2 x 2 = 4.0m2

Wall 11.25 4.0 = 7.25m2

Wall 2 and 4

Total Area

7 x 2.5 = 17.5m2

1.5 x 3.5 = 5.25m2

5.25 + 17.5 = 22.75m2

Assumptions

All brick wall

Wall 3

Total Area

4.5 x 25 = 11.25m2

Assumptions


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Ceiling Area

Total Area

1.52

x 3.52

= 14.5 SQROOT= 3.8m2

3.8 x 4.5 = 17.1 x 2= 34.2m2


BRICKTIMBERDOOR

ROLLERSHUTTER

DOOR

CONCRETEFLOOR

CEILING LOUVRES

1 7.25 4.0 0 0 0 02 22.75 0 0 0 0 03 11.25 0 0 0 0 0

4 22.75 0 0 0 0 0FLOOR 0 0 0 31.5 0 0CEILING 0 0 0 0 34.2 0TOTAL

TOTAL SURFACE AREA


63 125 250 500 1000 2000 4000 8000WALLS 3.2 3.2 3.2 2.6 1.3 2.6 3.2 3.2

CEILING 12.0 12.0 13.3 15.0 16.8 18.5 19.5 19.5



0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0


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Switch Gear @ 75dB Lw

63 125 250 500 1000 2000 4000 8000


1 4/Rc 0.20 0.20 0.18 0.15 0.15 0.13 0.09 0.09


3 Q/{4X3.142X.r SQ} 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.044 3 + 1 0.24 0.24 0.22 0.19 0.19 0.17 0.13 0.135 10 X LOG [4] -6.3 -6.3 -6.5 -7.2 -7.3 -7.7 -9.0 -9.06 SWL + [5] 68.7 68.7 68.5 67.8 67.7 67.3 66.0 66.0

Total Internal Reverberant Sound Pressure Level @ 500Hz 67.8 dB

Wall 2 and 4 not included as it is adjacent to ECE room


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41/53


Timber Door 24

Vent 10


26

000

total Area 11.25Wall 11.25

Door 0Vent 0


T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00028259




R f 500


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Timber Door 24

Vent 10


26

000

total Area 34.2Wall 0

Door 0Vent 0


T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00000000




N i B k t f St db G t R


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Noise Breakout from Standby Generator RoomRoom Constant Calculation

Wall 1Dimensions

Total Area

2.5 x 3 = 7.5m2

Assumptions

1 doorway

Door 2 x 2 = 4.0m2

Wall 7.5 4.0 = 3.5m2

Wall 2 and 4

Total Area

7 x 2.5 = 17.5m2

1.5 x 3.5 = 5.25m2

5.25 + 17.25 = 22.75m2

Assumptions

All brick wall

Wall 3

Total Area

2.5 x 3 = 7.5m2

Assumptions

Ceiling Area


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Ceiling Area

Total Area

1.5

2

x 3.5

2

= 14.5 SQROOT= 3.8m

2

3.8 x 3 = 11.4 x 2= 22.8m2


BRICKTIMBERDOOR

ROLLERSHUTTER

DOOR

CONCRETEFLOOR

CEILING LOUVRES

1 4.0 3.5 0 0 0 02 22.75 0 0 0 0 03 7.5 0 0 0 0 0

4 22.75 0 0 0 0 0FLOOR 0 0 0 21 0 0CEILING 0 0 0 0 34.2 0TOTAL

TOTAL SURFACE AREA


63 125 250 500 1000 2000 4000 8000WALLS 2.9 2.9 2.9 2.3 1.1 2.3 2.9 2.9


FLOOR 3.7 3.7 3.7 7.4 7.4 7.4 18.6 18.6


0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0



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Diesel Generator 102dB Lw from BS 5228 Ref 53 Table D.7

63 125 250 500 1000 2000 4000 8000


1 4/Rc 0.20 0.20 0.19 0.15 0.15 0.13 0.09 0.09


3 Q/{4X3.142X.r SQ} 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.044 3 + 1 0.24 0.24 0.23 0.19 0.19 0.17 0.13 0.135 10 X LOG [4] -6.2 -6.2 -6.4 -7.2 -7.3 -7.7 -8.9 -8.96 SWL + [5] 95.8 95.8 95.6 94.8 94.7 94.3 93.1 93.1


Wall 2 not included as it is adjacent to switch gear room

Wall 1 500


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Timber Door 24

Vent 10


26

000


Door 3.5Vent 0


T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000

Area x T 0.00010048




WALL 3 500


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Timber Door 24

Vent 10


26

000


Door 0Vent 0


T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000




Wall 4 500


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Timber Door 24

Vent 10


26

000


Door 0Vent 0


T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000




Roof 500


49/53


Timber Door 24

Vent 10


26

000


Door 0Vent 0


T=10^(-C5/10) 0.00002512

T=10^(-C5/10) 0.00398107T=10^(-C5/10) 0.10000000T=10^(-C5/10) 0.00251189T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000T=10^(-C5/10) 1.00000000




PLANT AND EQUIPMENT SOUND POWER LEVELS


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PLANT AND EQUIPMENT SOUND POWER LEVELSUSED IN ASSESSMENT

Plant / EquipmentSound Power

LwPlant / Equipment

Sound PowerLw

Deaerator Bund 70 NTS Gas Filter Coalesces 75Deaerator Tanks 0 Pig Receivers 75

Cavity Sump Pumps 70 Pipe work Gas Service 75Air-Compressed gas 90 Pipe work Liquid Service 75

Air-Regeneration gas 73.1 Pipe work Vent System 75CO2 Package 70 Pressure Letdown Valves 91Condensate Tank 75 Regeneration Gas Heater 85Control Valves 80 Slug catchers 75Control Valves GasService

75 Sump Pumps 75

Control Valves LiquidService

75 Vent KO Drum 75

Corrosion inhibitorpackage incl tank &pumps

92 Nitrogen Stack Silencer 80

Dry Glycol Tank 75 Vent Stack 110Electrical Switch Yard 85 VSD Cooling System Coolers 88Fuel Gas Package 85 Wet Glycol Tank 75Fuel gas package 70 Nitrogen Generation Package 70

Gas - Glycol HeatExchanger

75 Air-Regeneration gas 73.1

Gas Heaters 75 Control Valves Gas Service 75Glycol Contactor 75 Control Valves Liquid Service 75Glycol Filters 75 Methanol Injection Pumps 75

Glycol Make-up Pump 80 Control Valves 80Glycol Make-up Tank 75 Glycol Make-up Pump 80

Glycol RegenerationUnit 93 Heating Medium Make-up Pump 80

Glycol Separator 75 Miscellaneous Pumps 80Heating MediumCirculation Pumps

88 Nitrogen Stack Silencer NO 80

H i M di M k

Plant / EquipmentSound Power

LPlant / Equipment

Sound PowerL


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Plant / EquipmentLw

Plant / EquipmentLw

LP Compressor Cooler 93 VSD Cooling System Coolers 88LP Compressor

SuctionDrum 75 Air-Compressed gas 90Methanol InjectionPumps

75 HP Glycol Pumps 90

Methanol Pumps 90 Methanol Pumps 90Methanol Storage Tank 75 Pressure Letdown Valves 91Miscellaneous Pumps 80 HP Compressor Cooler 93Nitrogen Back-up

System70 LP Compressor Cooler 93

Nitrogen GenerationPackage

70 Nitrogen Vent Stack 80

Vent Stack* 110

*Vent stack has not been included in results. The vents are only used for routinemaintenance and for emergencies. During normal operation the flow will be essentially

zero. During an emergency the plant is depressurised in zones, each event is a high flow,but only for 15 minutes.

Predicted Noise LevelsExtract from scope of BS 4142

The method is not suitable for assessing the noise measured inside buildings or when the

background and rating noise levels are both very low. NOTE. For the purposes of thisstandard, background noise levels below about 30 dB and rating levels below about 35 dBare considered to be very low.

The above extract suggests that BS 4142 may not be applicable for this project asbackground noise levels are below 30dB and the highest rating noise level is 37.1 (with5dB penalty applied).

Table below provides a comparison of levels against BS4142 (with 5dB penalty), WorldHealth Organisation levels, BS8233 internal noise levels and Minerals Policy Statement 2.

PREDICTED RATING BACKGROUND BS8233


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50

RECEPTORPREDICTEDNOISELEVEL

RATINGNOISELEVEL

BACKGROUNDNOISE

BS4142 WHO BS8233INTERNALLEVEL

MPS 2

DAY NIGHT DAY NIGHT DAY NIGHT DAY NIGHT

Cote Walls Farm South Faade 30.0 35.0 32.2 24.8 2.8 10.2 -25.0 -10.0 -10.0 -25.0 -12.0Cote Walls Farm North Faade 21.8 26.8 32.2 24.8 -5.4 2.0 -33.2 -18.2 -18.2 -33.2 -20.2

Cote Walls Farm West Faade 29.1 34.1 32.2 24.8 1.9 9.3 -25.9 -10.9 -10.9 -25.9 -12.9

Cote Walls Farm East Faade 32.2 37.2 32.2 24.8 5.0 12.4 -22.8 -7.8 -7.8 -22.8 -9.8

Ivy Cottages 27.3 32.3 32.2 24.8 0.1 7.5 -27.7 -12.7 -12.7 -27.7 -14.7

Park Farm 28.9 33.9 32.2 24.8 1.7 9.1 -26.1 -11.1 -11.1 -26.1 -13.1

Carters Farm 15.9 20.9 34.9 29.5 -14.0 -8.6 -39.1 -24.1 -24.1 -39.1 -26.1

Elm Farm 12.5 17.5 38.6 N/A -21.1 N/A -42.5 -27.5 -27.5 -42.5 -29.5

Corcas Farm 27.2 32.2 32.2 24.8 0.0 7.4 -27.8 -12.8 -12.8 -27.8 -14.8

Rossall Hospital 28.7 33.7 41.7 37.4 -8.0 -3.7 -26.3 -11.3 -11.3 -26.3 -13.3

Rossall School 17.8 22.8 41.7 37.4 -18.9 -14.6 -37.2 -22.2 -22.2 -37.2 -24.2

Blackpool and The Fylde College 13.1 18.1 41.7 37.4 -23.6 -19.3 -41.9 -26.9 -26.9 -41.9 -28.9

Sportsmans Cottage and Caravan Park 23.6 28.6 34.8 29.8 -6.2 -1.2 -31.4 -16.4 -16.4 -31.4 -18.4

Riverside Cottage 24.5 29.5 34.8 29.8 -5.3 -0.3 -30.5 -15.5 -15.5 -30.5 -17.5

Little Height o th Hill 23.3 28.3 34.9 29.5 -6.6 -1.2 -31.7 -16.7 -16.7 -31.7 -18.7

Height o th Hill 23.2 28.2 34.9 29.5 -6.7 -1.3 -31.8 -16.8 -16.8 -31.8 -18.8

The Grange 23.2 28.2 32.2 24.8 -4.0 3.4 -31.8 -16.8 -16.8 -31.8 -18.8

Stanah House Caravan Park 9.6 14.6 36.9 33.2 -22.3 -18.6 -45.4 -30.4 -30.4 -45.4 -32.4

Harbour Village Development 26.6 31.6 35.6 32.2 -4.0 -0.6 -28.4 -13.4 -13.4 -28.4 -15.4

Broadwater Caravan Park 13.9 18.9 47.7 34.1 -28.8 -15.2 -41.1 -26.1 -26.1 -41.1 -28.1

Residential Dwellings Along West Way 18.8 23.8 36.9 33.2 -13.1 -9.4 -36.2 -21.2 -21.2 -36.2 -23.2

Residential Dwellings Along South Strand 13.6 18.6 35.6 32.2 -17.0 -13.6 -41.4 -26.4 -26.4 -41.4 -28.4

Red cell indicates rating level in excess of 10dB of background noise level.

Amber cell indicates rating level in excess of 5dB but less than 10dB of background noise level.

Green cell indicate rating noise level less than background noise level.

Predicted Construction and Operation Noise Levels


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51

Predicted Construction and Operation Noise Levels

RECEPTOR

PREDICTED

NOISELEVELDAYTIME

PREDICTED

NOISELEVELNIGHT TIME

BACKGROUND

NOISE

WHOBS8233INTERNALLEVEL

MPS 2

DAY NIGHT DAY NIGHT DAY NIGHT

Cote Walls Farm South Faade 34.1 34.1 32.2 24.8 -20.9 -5.9 -5.9 -20.9 -7.9

Cote Walls Farm North Faade 31.8 31.8 32.2 24.8 -23.2 -8.2 -8.2 -23.2 -10.2

Cote Walls Farm West Faade 33.0 33.0 32.2 24.8 -22 -7.0 -7.0 -22 -9.0

Cote Walls Farm East Faade 34.7 34.7 32.2 24.8 -20.3 -5.3 -5.3 -20.3 -7.3

Ivy Cottages 36.1 28.3 32.2 24.8 -18.9 -11.7 -11.7 -18.9 -13.7

Park Farm 32.1 29.6 32.2 24.8 -22.9 -10.4 -10.4 -22.9 -12.4

Corcas Farm 28.7 28.2 32.2 24.8 -26.3 -11.8 -11.8 -26.3 -13.8

Sportsman Cottage and Caravan Park 26.0 26.0 34.8 29.8 -29 -14.0 -14.0 -29 -16.0

Riverside Cottage 26.5 26.5 34.8 29.8 -28.5 -13.5 -13.5 -28.5 -15.5

Little Height o th Hill 26.1 25.9 34.9 29.5 -28.9 -14.1 -14.1 -28.9 -16.1

Height o th Hill 26.2 25.8 34.9 29.5 -28.8 -14.2 -14.2 -28.8 -16.2

The Grange 26.4 25.9 32.2 24.8 -28.6 -14.1 -14.1 -28.6 -16.1

Documents

5.2. ES Vol 1B (Binder 3) - Appendix 12.1 Operational Noise Calculations and Results