5 replies to this topic

[Aneken]

Hi all..

 

Greetings for the day..

 

Can anyone please help me with this problem?

 

Basically i want to know the method by which:

 

Problem :1 I can estimate the amount of instrument air in order to operate control valves.

 

Also i want to know the desired pressure by which the instrument air is to be supplied.

 

(just a rough estimate)

 

Problem :2 I can estimate the amount of plant air which will be used for cleaning.

 

Also i want to know the desired pressure by which the plant air is to be supplied.

 

Thanks in advance.

[breizh]

Aneken ,

For point 1 you need to refer to catalogue  of the supplier of valves . If I remember well using the search engine in this forum you can find information posted by Ankur .

For point 2 , what do you mean by air for cleaning ? Thanks to elaborate .

 

Breizh

[Aneken]

By cleaning i mean.

Cleaning of vessels , Heat exchangers tube etc.

[Aneken]

Well thanks a lot sir..

 

Query is solved.

[breizh]

Aneken ,

I don't know what you mean by cleaning HX with air . Be careful with this type of activity , air is a compressible fluid .

 

Breizh

[gegio1960]

Instrument and Plant Air systems in refineries are usually operated in the range 5-7 barg.