Vent silencer -For pipeline pre comm application

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In summary, the conversation discusses the design and use of a vent silencer for depressurizing activities during gas pipeline pre-commissioning. The silencer will be connected to a 48" pipeline with a length of 1220 km, and dry air will be injected to propel pigs and dispose of water at the other end. The pipeline will be depressurized from 20 barg to 0.5 barg over a period of 5 days, with a sound attenuation of 85 Dba at 40m as the critical parameter. The temporary pipe work connecting the main pipeline to the vent silencer is made of SCH 40 pipe with Ansi #300 RF flanges. For more information on acoustic analysis, the book "Noise
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badri2221
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I am looking forward to design vent silencer , which shall be temporarly connected to the 48'' pipeline for depressurising activites during gas pipeline pre comminissioning ativites.

Dry air shall be injected into pipeline which shall proppel the pigs and move the water infort of the pigs for an overall pipeline length of 1220 kms these water shall be disposed off into sea from the other end ,

its is clcullated that there will b pressure of 20 barg dry air in the pipeline which has to be depressurised over 5 days through the vent silencer .

Parameters :

48" Pipeline,1220 km

Pipeline pressure to be depressurised from 20 barg to 0.5 barg

Scheduled time for depressurisation is 5 days

Sound Attenuation 85 Dba at 40m as a basis for the model ( this being the critical parameter)
Temporary pipe work which connect the main pipeline to vent silencer is SCH 40 pipe with Ansi #300 RF flanges.
 
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I believe your question concerns acoustic analysis. In this case, I would recommend "Noise Control" by Colin Hansen for a detailed treatment.
 

Related to Vent silencer -For pipeline pre comm application

What is a vent silencer?

A vent silencer is a type of equipment used in pipelines to reduce the noise produced by the discharge of pressurized gases or steam. It is designed to absorb and dissipate the sound energy, making it quieter and less disruptive to the surrounding environment.

How does a vent silencer work?

A vent silencer typically consists of a series of expansion chambers or baffles that are designed to reduce the sound energy as it passes through. The sound waves enter the silencer and are reflected back and forth between the chambers, causing them to cancel out and dissipate. This process is known as sound attenuation.

What are the benefits of using a vent silencer?

The main benefit of using a vent silencer is the reduction of noise pollution. It can also help to protect the hearing of workers who are exposed to high levels of noise from the pipeline. Additionally, vent silencers can improve the overall efficiency of the pipeline system by reducing the pressure drop and minimizing the potential for damage to equipment from excessive noise and vibration.

How is a vent silencer installed?

A vent silencer is usually installed at the discharge point of the pipeline, where the noise is generated. It can be mounted directly onto the pipeline or connected with a flange. The size and type of vent silencer required will depend on the specific application and the flow rate of the gas or steam being discharged.

What are the maintenance requirements for a vent silencer?

A vent silencer typically requires minimal maintenance. However, it is important to regularly inspect and clean the silencer to ensure it is functioning properly. Any buildup of debris or corrosion should be removed, and any damaged components should be replaced to maintain the effectiveness of the silencer.

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