[dsg-svt] DSG work request

[Marc McMullen]

Yuri,

DSG has removed the flow meters and rotameter from the hall for testing. 
The flow meters were used in the hall during the previous run. After 
they are tested we will post results on the dsg-svt mailing list.

Marc


On 7/13/2018 12:39 PM, Yuri Gotra wrote:
>
> Thank you Peter,
>
> A comment on your statement on the flow meters. The models and the 
> number of the flow meters purchased (no spares) were defined by the 
> HBI group. I reported several times that this model is not designed to 
> work in magnetic field. The flow meters failed the very first time the 
> solenoid was turned ON. Please select a model which would be 
> compatible with requirements of the detector and let me and Bob Miller 
> know.
>
>
> On 7/13/18 11:56 AM, Peter Bonneau wrote:
>>
>> DSG comments regarding these work requests are in *blue.*
>>
>> On 7/13/2018 9:55 AM, Yuri Gotra wrote:
>>> For testing the cooling system in preparation of the SVT for beam 
>>> operations it is critical to have measurements of the coolant flow. 
>>> Both flow meters observed issues with correct reading of the flow. 
>>> The flow meters have been disconnected from the cooling lines 
>>> (control lines are still connected). Please test the flow meters asap.
>> DSG will schedule in this request in with all the other work in Halls 
>> B, C, and D we are doing in preparation for the upcoming run.
>> Hall B SVT does not have  cooling system repair components (external 
>> to the chillers) which was first mentioned in our email of 1/31/2017 
>> (listed below).
>
>
>
> _______________________________________________
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-- 
Marc McMullen
Detector Support Group
757-269-7738

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