2 replies to this topic

[victorvikram]

Dear All,

 

I need some clarification(s) on the concept of plant (refinery) and equipment operating life. The examples are as follows:

 

> Plant operating life of 20 years

> The default plant equipment design life shall be taken as follows:
    a) 30 years for heavy wall reactors and separators
    20 years for columns, vessels, heat exchanger shells and similar services.
    c) 12 years for piping, furnace tubes, High Alloy exchanger tubebundles.
    d) 5 years for Carbon Steel / Low Alloy heat exchanger tube bundles.
    e) 15 years for reactors removable internals

 

What are the basis behind these numbers? Is there any literature available that provides the basis of the numbers mentioned above?

 

Kind Regards,

Victor

[Napo]

Victorvikram,

 

You can review the book Peters-Timmerhaus: Plant Design and Economics for Chemical Engineering, McGraw-Hill, 4th. ed., 1991, Ch. 9: Depreciation, p.267.

 

Napo.

Edited by Napo, 19 July 2015 - 12:45 PM.

[breizh]

Victor ,

 

Follow Napo's tip or  try Google "Chemical plant equipment depreciation".

 

Good luck

 

Breizh