2 replies to this topic

[zbrna]

Hello everyone,

 

so I have made a similar forum regarding to this, but basically I'm interning in an oil and gas company where they have given me a task/project to work on regarding their oversized gas compressor in the gas plant. They ask me if it is possibly to resize or change the compressor completely and what would the pros and cons be (would it be worth it). However,  I need to check if it is feasible in the first place with the current system they use before proceeding with any options.

 

I asked my supervisor about what factors to consider when it comes to checking the feasability. He said I have to check if it is feasible technical wise, financial wise, time wise, and operation wise. However, for technical, I would like some advice on what to check specifically. Shld i look at the PFD and P&ID? And if yes what should i look out for etc. etc.. What else?

 

thanks

[breizh]

Hi,

Yes, PFD and PID are the documents to understand prior to discuss with equipment suppliers.  You will find the equipment, the piping size and connections, the instruments.

Another document to read if the alarms and security matrix where you will find the consequences to actions from system (DCS,PLC) or Operators called interlocks.

Hazop study is also a document to read and understand.

Note You said there is a compressor decommissioned, this may be the right place to install a new and smaller compressor without interfering with the existing operation.

Prepare a specification sheet to submit to vendors, do your own calculation 

About cost and time, you should consider a reciprocating compressor as a base case (cost and delivery time) and compare with other technologies, centrifugal type and screw type.

Hope this is giving you some pointers.

Good luck

Breizh

Attached Files

•  litterature about centrifugal compressors.pdf   1.48MB   0 downloads
•  anti surge control.pdf   1.26MB   0 downloads
•  anti surge system.pdf   261.86KB   0 downloads
•  anti surge valve.pdf   5.44MB   0 downloads
•  compressor calculation shortcut.pdf   4.14MB   0 downloads
•  Controlling-Centrifugal-Compressors.pdf   651.33KB   0 downloads
•  simulation compresseur.pdf   1.78MB   0 downloads
•  settle out pressure in compressor loop.pdf   117.58KB   1 downloads

[Pilesar]

Compressor systems are quite expensive compared to most other regular equipment. When you talk to your expert compressor vendors, let them know you seek a reliable economic solution. They often provide much engineering work in anticipation of making a sale. They can help analyze whether revamp or replacement makes sense.