[Opera-CONNIE] loss of vacuum

[Guillermo Fernandez]

Hi Carla,

it would be good if pamela and alejandro ca participate, they are our most
qualified persons in the container.

Guillermo


On Monday, January 12, 2015, Carla Brenda Bonifazi <bonifazi at if.ufrj.br>
wrote:

>
> Hi Guillermo,
>
> Thanks for the report.  In fact, tomorrow Martin and Stefan are going to
> Angra at the afternoon to be able to be at the Training Center early in the
> morning the following day. So, in fact we will have people at the container
> to work Wednesday morning, planning shift schedule.  Do you think that
> Pamela and Alejandro should anticipate they travel?
>
> Cheers, Carla.
>
> ----------
> Carla Bonifazi
> IF – UFRJ
> Av. Athos da Silveira Ramos, 149
> Centro de Tecnologia - bloco A - Cidade Universitária
> Rio de Janeiro - RJ - CP: 68528 - CEP: 21941-972
> Tel:  3938-7727 /  98112 3625 (celular)
> E-mail: bonifazi at if.ufrj.br <javascript:;>
>
>
>
>
>
> On 12/01/2015, at 19:59, Guillermo Fernandez <fmoroni.guillermo at gmail.com
> <javascript:;>> wrote:
>
> > Hello,
> >
> > it seems we have had another shutdown of the system, but this time due
> to a problem in the vacuum system, on Saturday 10th in the evening. The
> system started the warm up process of the detector because a detection of
> pressure above the safe limit. The pump indicates Error 006 which
> correspond to
> >
> > <PastedGraphic-1.png>
> >
> > The pump started sending this error at 22:20:56 GMT on 1/10/15. Few
> minutes before the system started in shutdown.
> >
> > The rough pump is still running, but not the turbo pump. However, the
> vacuum at the moment is 9.34 mbars, much higher than expected only with the
> rough pump.
> > It is attached a report of the more important variables (and a zoom of
> the last our). Together with the loss of vacuum, there was a very quick
> increase of the temperature of the different parts of the pump and an
> abrupt decrease of the turbo pump rpm. Also the "temperature motor" was the
> variable with the largest excursion. These signals might indicate we had
> some leak in the system. It would be very interesting to hear the opinion
> of someone with more experience with vacuum pumps.
> >
> > I know there are people going to the nuclear plant tomorrow. What time
> are you planning to be there and for how long?
> > We may use the man power there to corroborate the detector status and
> start making some vacuum tests. Can you share the phone number of at least
> two more people going there tomorrow? just in case we have some problems
> with the experiment's phone.
> >
> > The solution of this problem might not be simple. Even some simple tests
> on the vacuum system might take some time, taking into account they should
> be done carefully and with guidance from abroad.
> >
> > Regards,
> >
> > Guillermo
> >
> > <report.pdf>
> > <report.pdf>_______________________________________________
> > Opera-CONNIE mailing list
> > Opera-CONNIE at listas.if.ufrj.br <javascript:;>
> > http://listas.if.ufrj.br/listinfo/opera-connie
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listas.if.ufrj.br/pipermail/opera-connie/attachments/20150113/b3f3366f/attachment-0001.html>