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Constant Backpressure


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#1 shahidulislam48

shahidulislam48

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Posted 11 December 2016 - 07:11 AM

Hello,

 

Can anyone help me to find out the constant back pressure of Rupture Disk of the following system?

If I am not wrong, I guess it will be 1 barg.

 

Attached File  DSC_0011.JPG   39.85KB   2 downloads

 

Many Thanks.



#2 fallah

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Posted 11 December 2016 - 08:13 AM

Hi,

 

It is normally 0 barg which can be monitored by a PG to check about the leakage occurrence. But, as a RD is a differential pressure device, if it's intended to be 1 barg it should be considered in its burst pressure...



#3 shahidulislam48

shahidulislam48

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Posted 11 December 2016 - 01:21 PM

Hi,

It is normally 0 barg which can be monitored by a PG to check about the leakage occurrence. But, as a RD is a differential pressure device, if it's intended to be 1 barg it should be considered in its burst pressure...


If I think that before the installation of PSV, the back pressure that has been experienced by the RD is from the K.O. drum and constant.

If then I install PSV, fluid that have been trapped inside pipeline of length h, will provide the same back pressure as before to the RD.

That is how I came up with 1 barg.

It is true that during the installation of PSV, RD will expose to atmosphere and will have constant back pressure of 0 barg.

Thanks.




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