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Recommended sound pressure level for offshore facilities

Published on 18 Nov 2019 by ES Staff


Recommended sound (noise) pressure control level for offshore facilities according to industry standards.

Flares

During Normal Operation (no significant flaring), the maximum sound level of the flares should not exceed 85 dBA at grade level.

During Emergency condition, Start-up or Shut-down, the maximum sound level of the flares should not exceed 115 dBA at grade level.

Air Coolers

The maximum equivalent continuous sound level at 1 meter from Air Coolers should not exceed 80 dBA.

Control Valves and Restriction Orifices

The maximum equivalent continuous sound level at 1 meter from each Control Valve or from each Restriction Orifice operating continuously should not exceed 80 dBA in each operating condition (minimum, normal, maximum sizing conditions).

Vent Discharging to Atmosphere

Vents intended for continuous service (or normal operation) should not exceed a maximum equivalent continuous sound level of 81 dBA at 1 meter.

Emergency Noise Sources: PSV, BDV, PRV, CV, RO and Vents

The maximum equivalent continuous sound pressure level at 1 meter from Emergency Cargo Vent TM2300FK001 shall not exceed 142 dBC (considering location at 70m height from main deck in P01). This requirement permits to ensure noise impact below 115 dBA in accessible areas during emergency.

PSV, BDV, PRV, CV, RO and Vents and their piping intended for emergency use should not exceed a maximum sound level above 110 dBA in any working area.

Piping & Fittings

The maximum sound level at 1 meter from pipes and fittings should not exceed 80 dBA.

Waste Heat Recovery Unit and Air Handling Unit

The maximum equivalent continuous sound level at 1 meter from Waste Heat Recovery Unit and Air Handling Unit should not exceed 80 dBA.

Indoor HVAC Systems

Area Max dBA
Laboratory
50
Workshops
60
Local Electrical Room
70
Local Instrument Room
70
UPS Room 70
Battery Room 70
Crane Cabins
60


Mechanical Packages

Package Max dBA
Amine Filtration Package
81
Antifoam Injection Package
80
Antiscale Injection Skid
81
Baler - Crusher - Drum Compacter
80
Back purge skid
80
Biocide Injection Skid
81
Centrifuge 80
Chemical Injection Skid 81
De-sanding and De-oiling Package
81
Electro-chlorination Package
79
Emulsion Breaker Injection Skid
81
Hydrochloric Acid Injection Skid
81
Marine loading Arms Package 83
MEG Regeneration Unit
81
Nitrogen Generation Package
81
Oxygen Injection Skid
81
Scale Inhibitor Injection Skid
81
Sodium (Bisulfite, Hydroxide, Hypochlorite) Injection Skid
81
Vacuum Package
81
Electrodeionization (EDI) Skid
81
Reverse Osmosis Membrane Skid
81
Cleaning Water Pump Skid 81
Waste Water Transfer Pump Skid 81
Seawater Coarse Filtration Package
81
Demineralization Package
81
Fresh Water Generation Package
81
Membrane Deaeration Package
85
Clean-in-Place (CIP) Skid 81


Pumps

Equipment Max dBA
NGL Reinjection Pump
81
Deethanizer Reflux Pump
81
Depropanizer & Debutanizer Reflux Pump
82
Butane Reinjection Pump
82
LNG Booster Pigging Pump
81
Heat Medium Circulation Pump
80
Condensate Pump
80
Water Wash & Booster Pump
80
Lean Amine HP Pump
80
Amine Regeneration Reflux Pump
80
MEG Injection Pump
80
Make-Up Water Pump
80
Amine Sump Pump
81
Hydrocarbon Closed Drain Drum Pump
81
Lean/Rich Amine Booster Pump
81
Glycol Water Circulation Pump
80
Hydrocarbon Removal Pump
80
MEG Reboiler Pump
80
Lean MEG Pump
80
Reflux Pump
80
Vacuum Pump
80
Seal Water Pump
80
MEG Recycle Pump
80
Reclaimer Lean MEG Pump
70
Salt Pump
70
Centrate Pump
80
Heating Medium Make-Up Pump
81
Seawater Booster Pump
81
Main Cooling Water Circulation Pump
81
Demineralized Water Pump
81



Tags: sound noise