<html><body><div style="font-family: arial,helvetica,sans-serif; font-size: 12pt; color: #000000"><div>This will require a pressure systems design authority (DA) to perform the analysis, fill out the documentation, and make a determination if it can be used. <br></div><div><br data-mce-bogus="1"></div><div>This will require a P&I diagram and a spreadsheet listing all components to be used in the test setup, pressure and volume of gas, etc. First you need to find a pressure systems DA and ask them if they will be the DA for your test setup.</div><div><br data-mce-bogus="1"></div><div>I know it seems like much to do about nothing, but our hands are tied. The ASME pressure system requirements must be followed.<br data-mce-bogus="1"></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>"George Jacobs" <jacobsg@jlab.org>, dsg-ft@jlab.org<br><b>Sent: </b>Friday, May 5, 2017 12:11:40 PM<br><b>Subject: </b>nitrogen purge<br></div><div><br></div><div data-marker="__QUOTED_TEXT__">Dear George,<br>we are in the process of re-closing the forward tagger calorimeter to <br>prepare for this summer installation. We would like to test quickly the <br>circuit for the nitrogen purge using a nitrogen bottle in the EEL <br>building. It would be a very quick test just to make sure the circuit is <br>mounted correctly before proceeding with the rest of the assembly <br>procedure. Would it be possible to do it today?<br>Sorry for the very short notice!<br>Best regards,<br> Raffaella<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>