In a power plant with gas turbines (combustion turbines), some airborne noise is emitted by the various subsets making up each turbomachinery (in addition to noise emissions associated with the mouths for air intake and exhaust not included in the current project, although regularly studied and subject of simulation and design work (study) by ITS as part of other projects in the field of energy production):
- the turbine compartment i.e. compressors, combustion chamber, turbine
- the auxiliary compartment- the load compartment
- the portion of the envelope of the intake duct enclosed
- the portion of the envelope of the exhaust duct enclosed
- related equipments
This noise is so powerful that it is potentially causing noise pollution for personnel of the operator operating in the vicinity as for the neighborhood (including long distance). It is often necessary to use in such cases a soundproofing equipment of high technology to ensure compliance of the installation of one hand with respect to the legislation on noise at work and on the other hand with respect to the regulation in terms of environmental protection.
ITS will participate in the study of a soundproofing device for a large gas turbine (more than 120 MW for simple cycle, more than 190 MW for combined cycle) for a power generation unit.
This industrial soundproofing equipment will have a sound reduction particularly important (the overall sound power level to be considered is greater than 120 dBA and noise emissions are with a very wide frequency spectrum), requiring a specific study of the partitions and of the ventilation system which is one of the major features of the soundproofing equipment for this sub set of a gas turbine.
The optimization of the cost and of the duration of intervention for assembly and disassembly operations are key factors of success of the efficient soundproofing concept considered.
Specific materials and construction systems to meet ambitious and varied targets in terms of technical performance will be integrated on the occasion of the design study as required.
Related features such as weather resistance, disassembly of the whole and of subsets, securities, lighting, electrical works ... will be integrated according to the needs for this soundproofing device for a sub set of a gas turbine in the context of the study works.
Limitation of noise emissions in energy sector