<html><body><div style="font-family: arial,helvetica,sans-serif; font-size: 12pt; color: #000000"><div>I would hope so. There is already a N2 purge setup for the SVT in the excepted pressure system folder. But, it's not exactly the same.<br></div><div><br data-mce-bogus="1"></div><div>George<br data-mce-bogus="1"></div><div><br></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"Raffaella De Vita" <Raffaella.Devita@ge.infn.it><br><b>To: </b>"Amrit Yegneswaran" <yeg@jlab.org>, "George Jacobs" <jacobsg@jlab.org>, dsg-ft@jlab.org<br><b>Cc: </b>"Raffaella De Vita" <Raffaella.Devita@ge.infn.it><br><b>Sent: </b>Sunday, May 7, 2017 4:04:27 PM<br><b>Subject: </b>Re: [Dsg-ft] nitrogen purge<br></div><div><br></div><div data-marker="__QUOTED_TEXT__">Dear George and Amrit,<br>thanks for the feedback. For the quick check we want to do, canned air <br>maybe the way to go. We will try tomorrow.<br>However to be able to operate the calorimeter for a more complete test, <br>we would really need to restore the nitrogen purge. We will talk to Bob <br>Miller tomorrow to see if we can have a DA assigned. Based on what you <br>explained to us some time ago concerning pressure systems, if we use a <br>bottle with a pressure regulator and an orifice, it should be reasonably <br>simple to get the analysis done, right?<br>Thanks again,<br> Raffaella<br><br><br>Amrit Yegneswaran wrote:<br>> Hi, Perhaps we could use the compressed air line, unfortunately this <br>> could contain moisture ,oil and junk.Or one could use canned air. <br>> Amrit ----- Original Message ----- From: George Jacobs To: Raffaella <br>> De Vita Cc: dsg-ft@jlab.org Sent: Fri, 05 May 2017 16:02:30 -0400 <br>> (EDT) Subject: Re: [Dsg-ft] nitrogen purge This will require a <br>> pressure systems design authority (DA) to perform the analysis, fill <br>> out the documentation, and make a determination if it can be used. <br>> This will require a P&I diagram and a spreadsheet listing all <br>> components to be used in the test setup, pressure and volume of gas, <br>> etc. First you need to find a pressure systems DA and ask them if they <br>> will be the DA for your test setup. I know it seems like much to do <br>> about nothing, but our hands are tied. The ASME pressure system <br>> requirements must be followed. George From: "Raffaella De Vita" To: <br>> "George Jacobs" , dsg-ft@jlab.org Sent: Friday, May 5, 2017 12:11:40 <br>> PM Subject: nitrogen purge Dear George, we are in the process of <br>> re-closing the forward tagger calorimeter to prepare for this summer <br>> installation. We would like to test quickly the circuit for the <br>> nitrogen purge using a nitrogen bottle in the EEL building. It would <br>> be a very quick test just to make sure the circuit is mounted <br>> correctly before proceeding with the rest of the assembly procedure. <br>> Would it be possible to do it today? Sorry for the very short notice! <br>> Best regards, Raffaella -- George Jacobs Physics Detector Support <br>> Group Jefferson Lab 12000 Jefferson Ave. STE 12 Newport News, VA 23606 <br>> (office) 757-269-7115 (cell) 757-876-0480 (email) jacobsg@jlab.org <br>> (website) https://userweb.jlab.org/~jacobsg<br></div><div><br></div><div data-marker="__SIG_POST__">-- <br></div><div>George Jacobs<br>Physics Detector Support Group<br>Jefferson Lab<br>12000 Jefferson Ave.<br>STE 12<br>Newport News, VA 23606<br><br>(office) 757-269-7115<br><br>(cell) 757-876-0480<br><br>(email) jacobsg@jlab.org<br><br>(website) https://userweb.jlab.org/~jacobsg<br></div></div></body></html>