Location: South Western Ontario, Canada
Application: Gas storage compressor station. Noise and engine emission reduction from (11) eleven reciprocating engine / compressor / turbo chargers used to inject and withdraw natural gas into storage pools.
The Issues:
The existing exhaust systems and associated turbo chargers are located outside the compressor building. It was determined that the present sound level at the closest receptors exceeded the sound level limit for stationary sources by up to 20 dBA. The sources of this excess were the turbo chargers which are located a considerable height above ground level, and the existing engine exhaust noise entering atmosphere. Also, to meet the emissions contaminant requirement the height of the point of entry to atmosphere needed to be increased to 20-23M (65.6-75.4 ft.) above ground level. Most of the units had exhaust silencers fitted. However, some of them needed to be replaced due to deterioration associated with age.
Engineered Solutions:
NVC Olsonfab supplied the following scope of work:
- Designed, engineered ad manufactured (11) eleven complete exhaust systems including the following…
- (3) three, replacement, reactive, 25-30 dBA overall noise reduction, primary exhaust silencers.
- (11) eleven additional, absorptive, 15-20 dBA overall noise reduction, secondary exhaust silencers
- Exhaust ducting
- Exhaust stacks
- Exhaust support structures, platforms and ladders
- Expansion joints
- Emission test ports
- Thermal / acoustic lagging with stainless steel cladding
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Designed, engineered and manufactured a 10m (33ft) high sound reducing, barrier wall to completely screen all (11) eleven units including the following…
- Barrier wall assembled from NVC Olsonfab, Quietwall Standard modular noise reducing panels. Sections of the panels were preassembled in our plant to facilitate fast, easy assembly at site.
- Self-supporting, structural steel support frame so that no additional loads were taken by the adjacent compressor building.
- Personnel doors
- Ventilation openings with acoustic louvres to minimise heat buildup around the screened equipment.
- Sealed openings for existing piping, structural members, etc.
- Provided:
- Site consultation and co-ordination to ensure the most cost effective solutions, taking into account the overall noise reduction to be achieved, proximity of existing equipment and minimising the amount of site rework required, including civil work.
- Complete design, engineering and drawings for all mechanical and civil work
- Partial supervision of installation to ensure error free, fast, and acoustically correct procedures.
