[Dsg-ft] MVT mixing system - Lite Version

[Aune Stephan]

Hi
An answer on the need for the “lite system”: it will work fine for MVT.

Knowing a Pure isobutene bottle will last more than a 3 month run, check on the remaining weight  on manual scale (no pressure measurement possible) will have to be done ~ monthly. And the bottle could be exchanged between run.

We have another issue to solve here and now.

Yesterday morning we saw that the Argon bottle we use in Eel was empty. We have been using for our test less than 10 l/h since we arrived (we qualify our detector when leak is under 0.05 l/h !) , and only day time. Thus less than 500 l have been used but the bottle (10 000 l) is already empty. 

We, Saclay team, found the leak (~ 50 l/h) this morning. It is outside on the pressure release valve. The same leak we had found 15 months ago on MVT B2. The Eel gas system was not done properly and not tested either, which is surprising considering the amount of safety paperwork we on the other end have to go through to turn anything on.

Bob gave instruction to solve it. I do not want to waste isobutene premix with such a leak.

Stephan

________________________________________
De : Dsg-mvt [dsg-mvt-bounces at jlab.org] de la part de Volker Burkert [burkert at jlab.org]
Envoyé : mardi 6 juin 2017 19:17
À : George Jacobs
Cc : Matt Marchlik; Bob Miller; dsg-mvt at jlab.org; dsg-ft at jlab.org
Objet : Re: [Dsg-mvt] MVT mixing system - Lite Version

George,
Thanks for the information.

Questions:
What parts of the full system does the "lite system" include and what parts does it not include?
If we go with "lite", what is the impact on the operation of the gas system?
Thanks,
Volker


Or asked differently,



----- Original Message -----
From: "George Jacobs" <jacobsg at jlab.org>
To: dsg-mvt at jlab.org, dsg-ft at jlab.org, "Bob Miller" <rmiller at jlab.org>, "Matt Marchlik" <marchlik at jlab.org>, "burkert Burkert" <burkert at jlab.org>, "Stepan Stepanyan" <stepanya at jlab.org>
Sent: Tuesday, June 6, 2017 12:39:00 PM
Subject: MVT mixing system - Lite Version

Please find attached the "Lite" version. Note this cost does not account for any spares.
--
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606

(office) 757-269-7115

(cell)   757-876-0480

(email) jacobsg at jlab.org (website) https://userweb.jlab.org/~jacobsg
_______________________________________________
Dsg-mvt mailing list
Dsg-mvt at jlab.org
https://mailman.jlab.org/mailman/listinfo/dsg-mvt