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<font size="2"><span style="font-size:11pt">Hi Marco,<br>
</span></font></div>
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<font size="2"><span style="font-size:11pt"><br>
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<font size="2"><span style="font-size: 11pt; color: rgb(12, 100, 192);">- do we still have remote access to the information on the nitrogen
</span><span style="font-size: 11pt; color: rgb(12, 100, 192);">flow? </span><span style="font-size:11pt"><br>
</span></font></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<font size="2"><span style="font-size:11pt">No, the flow can only be remotely read out through that cRIO.</span></font></div>
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<font size="2"><span style="font-size:11pt">There is a local display on the nitrogen panel on top of the forward carriage someone can read in person.</span></font></div>
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<font size="2"><span style="font-size:11pt"><br>
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<font size="2"><span style="font-size:11pt"></span><span style="font-size: 11pt; color: rgb(12, 100, 192);">- do we still have remote access to the information on the humidity level inside the RICH?</span></font></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<font size="2"><span style="font-size:11pt">The humidity in the electronic panel can still be read by the EP cRIO. Those humidity readings are still very low, making me confident that there is still N2 flow to RICH.<br>
</span></font></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<font size="2"><span style="font-size:11pt">We cannot read the humidity in the nitrogen volume because the cRIO appears to have failed.<br>
</span></font></div>
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<font size="2"><span style="font-size:11pt"><br>
</span></font></div>
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<font size="2"><span style="font-size:11pt"></span><span style="font-size: 11pt; color: rgb(12, 100, 192);">- do we still have the alarm system working?</span></font></div>
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<font size="2"><span style="font-size:11pt">To my knowledge, all the alarms are still enabled.<br>
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<font size="2"><span style="font-size:11pt"><br>
</span></font></div>
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<font size="2"><span style="font-size: 11pt; color: rgb(12, 100, 192);">- do we still have the backup system working?</span></font></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<font size="2"><span style="font-size:11pt">Yes, the backup N2 system is still connected and will provide N2 if the main supply pressure stops. This system has no electrically controlled or remote controlled elements so the backup flow automatically starts
if N2 supply pressure is lost through the use of a normally-open pneumatic valve.
</span></font><br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Marco Mirazita <Marco.Mirazita@lnf.infn.it><br>
<b>Sent:</b> Tuesday, March 30, 2021 10:26 AM<br>
<b>To:</b> Tyler Lemon <tlemon@jlab.org><br>
<b>Cc:</b> Denny Insley <dinsley@jlab.org>; Morgan Cook IV <mcookiv@jlab.org>; Bob Miller <rmiller@jlab.org>; dsg-hallb_rich@jlab.org <dsg-hallb_rich@jlab.org>; Valery Kubarovsky <vpk@jlab.org><br>
<b>Subject:</b> [EXTERNAL] Re: [dsg-hallb_rich] Fw: unable to connect to RICH N2 cRIO in hall</font>
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<div class="BodyFragment"><font size="2"><span style="font-size:11pt;">
<div class="PlainText">Hi Tyler,<br>
could you please clarify the situation? In particular:<br>
- do we still have remote access to the information on the nitrogen <br>
flow?<br>
- do we still have remote access to the information on the humidity <br>
level inside the RICH?<br>
- do we still have the alarm system working?<br>
- do we still have the backup system working?<br>
Thank you,<br>
Marco<br>
<br>
<br>
Il 2021-03-29 14:52 Tyler Lemon ha scritto:<br>
> Hi Denny and Morgan,<br>
> <br>
> Please see the email chain below.<br>
> <br>
> Brian went in to Hall B last week to check the the RICH N2 volume<br>
> cRIO that failed and it looks like the cRIO will have to be replaced.<br>
> <br>
> Until the cRIO issue is resolved, can Hall B Engineering periodically<br>
> check the local N2 flow readout for RICH on the top of the forward<br>
> carriage to make sure the detector is still getting appropriate N2<br>
> flow? We're still all working from home and have to make special<br>
> arrangements to go in to the lab.<br>
> <br>
> We can remotely see that the humidity in the RICH electronic panel is<br>
> still very low (below the point we're able to read with the humidity<br>
> sensors), but it'd still be good to check the flow meters in case<br>
> something happens to that cRIO.<br>
> <br>
> Thanks.<br>
> <br>
> -Tyler<br>
> <br>
> -------------------------<br>
> <br>
> From: Dsg-internal <dsg-internal-bounces@jlab.org> on behalf of Tyler<br>
> Lemon <tlemon@jlab.org><br>
> Sent: Monday, March 29, 2021 8:32 AM<br>
> To: Amrit Yegneswaran <yeg@jlab.org>; 'dsg-internal'<br>
> <dsg-internal@jlab.org><br>
> Subject: Re: [Dsg-internal] unable to connect to RICH N2 cRIO in hall<br>
> <br>
> Remotely, no there is not a way.<br>
> <br>
> If you go up to the top of the forward carriage, there are local<br>
> displays on the flow meters.<br>
> <br>
> -------------------------<br>
> <br>
> From: Dsg-internal <dsg-internal-bounces@jlab.org> on behalf of Amrit<br>
> Yegneswaran <yeg@jlab.org><br>
> Sent: Monday, March 29, 2021 8:29:04 AM<br>
> To: 'dsg-internal' <dsg-internal@jlab.org><br>
> Subject: Re: [Dsg-internal] unable to connect to RICH N2 cRIO in hall<br>
> <br>
> thanks brian<br>
> we'll talk about this issue in today's meeting<br>
> is there anyway to see wheteher there is nitrogen flow?<br>
> <br>
> -------------------------<br>
> <br>
> From: Brian Eng <beng@jlab.org><br>
> Sent: Saturday, March 27, 2021 12:15 AM<br>
> To: Amrit Yegneswaran <yeg@jlab.org>; Tyler Lemon <tlemon@jlab.org>;<br>
> 'dsg-internal' <dsg-internal@jlab.org><br>
> Subject: Re: unable to connect to RICH N2 cRIO in hall<br>
> <br>
> It wouldn't force boot into safe mode (still the same blinking status<br>
> LED) nor be detected by MAX when connected via USB or directly with a<br>
> network cable.<br>
> <br>
> Looks like might have to swap the cRIO out, but I'm going to file a<br>
> ticket with NI first to make sure there isn't something else I can do<br>
> locally before doing that since that seems like kind of a pain to do.<br>
> <br>
> -------------------------<br>
> <br>
> From: Brian Eng <beng@jlab.org><br>
> Sent: Friday, March 26, 2021 12:15 AM<br>
> To: Amrit Yegneswaran <yeg@jlab.org>; Tyler Lemon <tlemon@jlab.org>;<br>
> 'dsg-internal' <dsg-internal@jlab.org><br>
> Subject: Re: unable to connect to RICH N2 cRIO in hall<br>
> <br>
> First look isn't good, the status LED on the cRIO is constantly<br>
> blinking which according to the manual means:<br>
> <br>
> The cRIO-9035 has not booted into NI Linux Real-Time. The cRIO-9035<br>
> either booted into an unsupported operating system, was interrupted<br>
> during the boot process, or detected an unrecoverable software error.<br>
> <br>
> I did notice that the network went down/up several times along with<br>
> it trying to access the SD card, so it seems like it's in some sort of<br>
> boot loop.<br>
> <br>
> I didn't bring the Windows laptop down with me today and it's later<br>
> than I planned on being here so I'll try formatting it locally<br>
> tomorrow to see if I can't just get it on the network so that<br>
> Tyler/Pete can reinstall the needed software.<br>
> <br>
> -------------------------<br>
> <br>
> From: Amrit Yegneswaran <yeg@jlab.org><br>
> Sent: Friday, March 19, 2021 4:45 PM<br>
> To: Brian Eng <beng@jlab.org>; Tyler Lemon <tlemon@jlab.org>;<br>
> 'dsg-internal' <dsg-internal@jlab.org><br>
> Subject: Re: unable to connect to RICH N2 cRIO in hall<br>
> <br>
> brian,<br>
> from tyler's e-mail it appears that since there is still N2 so there<br>
> should be no urgent problem.<br>
> which means you can decide when you wish to go.<br>
> like always late in the evening.<br>
> <br>
> pity the hallb techs aren't able to help.<br>
> <br>
> on the good news aide patrizia, is willing to consider the robotic<br>
> version, but we need to come up with a plan on what other project<br>
> (which are on the books we can use the system)<br>
> so all, put on your thinking caps<br>
> <br>
> -------------------------<br>
> <br>
> From: Dsg-internal <dsg-internal-bounces@jlab.org> on behalf of Brian<br>
> Eng <beng@jlab.org><br>
> Sent: Friday, March 19, 2021 2:48 PM<br>
> To: Tyler Lemon <tlemon@jlab.org>; 'dsg-internal'<br>
> <dsg-internal@jlab.org><br>
> Subject: Re: [Dsg-internal] unable to connect to RICH N2 cRIO in hall<br>
> <br>
> I can go in and check it tonight if need be.<br>
> <br>
> -------------------------<br>
> <br>
> From: Dsg-internal <dsg-internal-bounces@jlab.org> on behalf of Tyler<br>
> Lemon <tlemon@jlab.org><br>
> Sent: Friday, March 19, 2021 1:45 PM<br>
> To: 'dsg-internal' <dsg-internal@jlab.org><br>
> Subject: [Dsg-internal] unable to connect to RICH N2 cRIO in hall<br>
> <br>
> Hello,<br>
> <br>
> I'm going to preface this by saying that from the EP cRIO, we can see<br>
> that the humidity in RICH is still low and at a good level so RICH is<br>
> still getting N2 without issues.<br>
> <br>
> That being said, I cannot connect to the N2 volume cRIO (hostname<br>
> richcrio) over the network.<br>
> <br>
> Peter noticed this a few days ago and I asked Hall B engineering to<br>
> check on the cRIO. Their response was not helpful since they just<br>
> looked at the cRIO chassis from the outside. I have since asked them<br>
> to recheck the chassis, looking inside to see if there are any lights<br>
> flashing inside, but this probably won't be done today.<br>
> <br>
> It seems more likely than not that someone will have to go in to Hall<br>
> B to check the cRIO.<br>
> <br>
> Since we can still monitor the internal humidity from the EP cRIO, I<br>
> don't think this is something that has to be absolutely taken care of<br>
> right this movement.<br>
> <br>
> Should I start the process of getting approval to go in myself? Or<br>
> would Brian be able to check the cRIO?<br>
> <br>
> -Tyler<br>
> _______________________________________________<br>
> dsg-hallb_rich mailing list<br>
> dsg-hallb_rich@jlab.org<br>
> <a href="https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rich">https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rich</a><br>
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