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Rupture Disc

rupture disc premature failure

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Posted 25 September 2018 - 07:09 AM

Hi all,


If rupture disc is sized for the Gas / Vapor service, but due to some requirement, same rupture disc is being installed on the the liquid service. How the burst pressure will change?


Original design of rupture disc for Gas condition : - Temperature - 92°C , Mol Wgt - 34.7 kg/kmol, Burst pressure 8.0 kg/cm2g.


New liquid condition : - Temperature - 35°C , Density 994 kg/m3 , what will be Burst pressure ?


Directly what will happen, burst pressure will increase or decrease?

Can i get some relation or any other source to understand the effect on bursting pressure due to change in the fluid conditions?



#2 breizh


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Posted 25 September 2018 - 09:42 AM

Hi ,

consider the document attached .

I'm very confused with your query.

Make sure someone knowledgeable about safety device is checking your work .



Attached Files

#3 latexman


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Posted 25 September 2018 - 10:41 AM

Attached File  RD burst pressure vs T.png   138.3KB   0 downloads


It depends on the material(s) your rupture disk is made from.  Ask your vendor this exact question along with item number.  



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Posted 26 September 2018 - 03:16 AM

Hi Breizh,


Sorry if i created any confusion

Thanks for the paper - will go through this.


Hi latexman,


Thanks - will try to contact vendor.

And the material is SS316..

#5 vjsureka81


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Posted 29 September 2018 - 02:06 AM

Hi All,


I am newly joined & happy to be here for learning & sharing.


Its related to rapture disc ,


How to decide the set Pressure difference in PRV and rapture disc for a particular equipment..? (once rapture disc (Installed parallel) brust due to high pressurization, material goes out , then whats the use of installed PRV.?


There should be any difference in set pressure.?


And the installation criteria of PRV & rapture disc (like should install parallel or in series)..?


Please guide,



#6 Art Montemayor

Art Montemayor

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Posted 01 October 2018 - 07:17 PM



Is your query really about a "rapture" disc, or is this just some levity injected into the thread?

#7 vjsureka81


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Posted 07 October 2018 - 10:59 PM

Dear Sir,


Its a query about Rapture Disc at my level ,



#8 latexman


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Posted 08 October 2018 - 05:50 AM



The correct spelling is rupture.

#9 runsaep


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Posted 29 October 2018 - 04:26 AM

somebody have a spreadsheet for rupture disc sizing?

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