[Dsg-rich] disconnected RICH N2 backup manifold banks

[Bill Crahen]

Looking at the photos I took, I did not see any labels on the valves- 
something which should probably be corrected at some point. 
functionally, there is no difference between connection at MV4 and MV1, 
although you should be able to physically "walk down"  the P&I diagram- 
it should be an accurate map.

On 2/8/2019 8:06 AM, Tyler Lemon wrote:
>
> Hello Bob,
>
>
> Thank you for letting us know it has been approved.
>
>
> I found the attached PDF in the Pressure Systems DocuShare, but there 
> is a small difference between that drawing and how it was installed in 
> Hall B. The backup manifold was connected to the existing panel at MV4.
>
>
> Best regards,
>
> Tyler
>
> ------------------------------------------------------------------------
> *From:* Bob Miller
> *Sent:* Thursday, February 7, 2019 5:16:43 PM
> *To:* Denny Insley; Tyler Lemon; dsg-rich; Bill Crahen
> *Subject:* Re: disconnected RICH N2 backup manifold banks
>
> Hi Tyler,
>
>
> The modifications for the RICH backup N2 have been completed and 
> approved by the design authority, Bill Crahen.
>
>
> Regards,
>
> Bob
>
>
>
> ------------------------------------------------------------------------
> *From:* Denny Insley
> *Sent:* Thursday, February 7, 2019 9:13 AM
> *To:* Tyler Lemon; Bob Miller; dsg-rich
> *Subject:* Re: disconnected RICH N2 backup manifold banks
> Sure
>
> Get Outlook for iOS 
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> ------------------------------------------------------------------------
> *From:* Tyler Lemon
> *Sent:* Thursday, February 7, 2019 8:50:21 AM
> *To:* Bob Miller; Denny Insley; dsg-rich
> *Subject:* disconnected RICH N2 backup manifold banks
>
> Hello Bob and Denny,
>
>
> George mentioned this morning that the two backup N2 banks for RICH 
> have been disconnected from the backup manifold because correct 
> orifices and relief valves were not installed on the N2 banks.
>
>
> He also mentioned that he has given the components to Hall B this 
> morning to be able to install the missing relief valves and orifices.
>
>
> Once the N2 banks are set back up with the correct components, could 
> the bank regulators be set to 20 psi and 18 psi rather than 12 psi and 
> 10 psi?
>
>
> The higher pressures would compensate for the pressure drop across the 
> N2 panel filters and the system should be able to flow what is needed 
> to RICH from the backup system.
>
>
> Best regards,
>
> Tyler
>
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