案例分享 | 海工平台压缩机噪声分析计算方法

The first step of the study is to integrate the new compressor platform acoustic model on the existing main platform acoustic model. The model will incorporate:

• the existing main platform (input from Client)；

• the compressor package；

• the noisiest pipes, valves;

The second step is to collect all the acoustic data related to the new compressor platform:

• Noise characteristics of the sources；

• Insulation material used.

Most of the values will come from vendor data and VIBRATEC/CLIENT databases.

The last step is to incorporate these data in the model. Depending on their size and behaviour, sources will be modelled as:

• point sources for small sources (valves, pumps…)；

• linear sources for piping；

• surfaces for large sources (compressor).

Study in detail

The noise study’s aim is to anticipate the impact of the equipment and assess the noise levels in the platform area. Configurations to be studied will have to be agreed with CLIENT; e.g. Normal Production Phase/Emergency operations etc.

The acceptance limits shall be determined with CLIENT. The acceptance limits shall be in accordance with:

• International codes and standards;

• CLIENT general specifications.

  
  

The simulations will be used to:

• Verify that the levels are in accordance with acceptance criteria;

• Recommend compensatory measures;

• Classify some areas as noise restricted areas if no solutions are considered to be acceptable.

When criteria are not met, modifications will be discussed with CLIENT. The final report will be issued in two revisions:

• Draft Issue for CLIENT preliminary review and comment;

• Final Issue for COMPANY approval.

The final report will contain:

• Executive summary;

• Methodology;

• Assumptions;

• Results;

• Noise maps;

• Recommendations and mitigation measures;

• Conclusions regarding noise level acceptability.

Example of a platform noise map