[Dsg-rich] Nitrogen system

[Tyler Lemon]

Hi Valery,

Morgan mentioned that the nitrogen supply pressure could drop by about 10 psi. Currently, we’re measuring about 35 psi at the supply of RICH’s nitrogen panel. The regulator on RICH’s nitrogen panel is set to about 5-10 psi, I believe. RICH should be good since a 10 psi drop in supply pressure would be mitigated by the regulator being set to a low pressure. 

The regulator on the panel would also protect against the over-pressure Morgan mentioned that could also occur. 

As Marc mentioned, we will be monitoring the flow and conditions in RICH and can advise/adjust if necessary. 

Best regards,
Tyler

> On Nov 2, 2018, at 5:17 PM, Marc McMullen <mcmullen at jlab.org> wrote:
> 
> Hi Valery,
> 
> I spoke with Tyler earlier and he is aware of the situation. Currently, he says there are no adjustments needed. However, he is monitoring the situation and we can adjust or advise Hall B if necessary.
> 
> Marc McMullen
> Physics Division
> Detector Support Group
> 7738
> 
> From: "Valery Kubarovsky" <vpk at jlab.org>
> To: "Marc McMullen" <mcmullen at jlab.org>
> Cc: "Morgan Cook" <mcookiv at jlab.org>, "Tyler Lemon" <tlemon at jlab.org>, dsg-svt at jlab.org, dsg-ft at jlab.org, "dsg-rich" <dsg-rich at jlab.org>
> Sent: Friday, November 2, 2018 5:04:34 PM
> Subject: Re: [Dsg-rich] Nitrogen system
> 
> Hi Marc,
> Do we need to do something with RICH due to this exercise?
> Best,
> Valery
> 
> 
> From: "Marc McMullen" <mcmullen at jlab.org>
> To: "Morgan Cook" <mcookiv at jlab.org>, "Tyler Lemon" <tlemon at jlab.org>, dsg-svt at jlab.org, dsg-ft at jlab.org, "dsg-rich" <dsg-rich at jlab.org>
> Sent: Friday, November 2, 2018 3:32:53 PM
> Subject: Re: [Dsg-rich] Nitrogen system
> Hi Morgan,
> 
> I am forwarding this to the detector groups which utilize the nitrogen 
> system, so that preparations can be made if necessary.
> 
> Regards,
> 
> Marc
> 
> On 11/2/2018 3:16 PM, Morgan Cook wrote:
> > Greetings,
> >
> > During the morning hours of the next hall opening, presumably Monday, November 5, possibly Tuesday, November 6, the Nitrogen gas system will experience some pressure changes while the regulators are being rebalanced.  The pressure changes are expected to be in the 5-10 psi range.  At the end of the aforementioned rebalancing, there may be a slight increase in the pressure of the Nitrogen going to the hall.  The said increase may be around 5 psi, maybe less, maybe a psi or two more.
> >
> > If you have any equipment that will be effected by the previously mentioned pressure changes during the rebalancing of the regulators or by the small increase in line pressure, please be prepared to make adjustments as needed.  Hence the reason for rebalancing while the hall is accessible.
> >
> > Your cooperation, as you are, is appreciated.
> >
> > Cordially,
> > Morgan Cook
> 
> -- 
> Marc McMullen
> Detector Support Group
> 757-269-7738
> 
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