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Telltale For Rupture Disks


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#1 Guest_rammohan_*

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Posted 02 February 2004 - 08:28 PM

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Dear Philip,

I have a problem with a typical case of Rupture disks.

We had used RCS type disks (24") of Continental Disks with a Telltale indiactor (pressure switch by Custom Control Sensors model 646GZE1-7023). The service is LP Flare KO drum discharge. The discharge side of the PSE (rupture disk) is connected to the the line itself downstream. The normal D/P is 0.4 bar and the Rupture disk is set for 1.04 bar d/p bursting pressure.

The client says this will not work and so unsafe and poor enginering. The supplier says it is OK and I too believe it is OK. The client believes an alarm strip only will workof the type continental supplies as BDI strip.

I will appreciate if you can you give me an advise based on your thoughts.

Truely
rammohan

#2 pleckner

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Posted 05 February 2004 - 08:01 PM

Rammohan,

As long as what the client wants will work, then I tend to give it to them. If I strongly disagree, I will try to change their minds. If they still won't see it my way, then I will give them what they want anyways but I will document my objections.

In your case, their request is very reasonable as this is the preferred means to detect a bursting rupture disk. You mention in your post that the "supplier" agrees with you. Is this the manufacturer? Often, the manufacturer and the supplier are two different entities.

I don't like a switch since switches can, and do, fail. This is probably what has your client is concerned about. Just give them the BDI strip and sleep easy.




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