[Sneap] Information request concerning High pressure safety system in electrostatic accelerators

[jonesn7 at comcast.net]

The ORNL EN tandem had an 8" Conflat flange sealed with a Viton ring with only light spring pressure (and gravity) holding it together on the High Energy end pumping tee. I had calculated that it would relieve at ~ 1.5 psi internal pressure. 


Love 'em all.... Let God sort 'em out! 
Nathan Jones 
jonesn7 at comcast.net 


----- Original Message ----- 
From: "Augusto Lombardi" <augusto.lombardi at lnl.infn.it> 
To: sneap at tunl.duke.edu 
Sent: Wednesday, March 18, 2009 4:40:40 AM (GMT-0500) Auto-Detected 
Subject: [Sneap] Information request concerning High pressure safety system in electrostatic accelerators 


Dear Sneapers, 

I am Augusto Lombardi from Legnaro and some of you know me already. 
I am now responsible for the operation of the two single stage machine in Legnaro the AN 2000 and the CN 7 MeV. 

The questions I have for the community is: 



    1. There are any risk analysis and/or records concerning the high pressure hazard due to the column breakdown or any other accident that put in comunication the high pressure vessel with the beam vacuum pipe? (more than 10 bar vessels versus vacuum) 
    2. There are any safety systems for this kind of accident? (we do have break disks and spring loaded valves but ....) 

Thank you all for the help. 
greetings 
Augusto. 

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