[Dsg-mvt] News about relief valves
mdefurne
mdefurne at jlab.org
Wed Jul 19 14:45:34 EDT 2017
We are ready to switch to Argon. So if you can do it this afternoon or
tomorrow morning, that would be great.
Also can you send me the name of the DA for the relief valve? Is it Matt
Marchlik? If it could be approved quickly, again, that would be great
for our future test.
Thank you Marc,
Have a good day,
Maxime
Le 19/07/2017 à 14:31, Marc McMullen a écrit :
> Hi Maxime,
>
> Just let me know when to turn on the gas.
>
> Marc
>
>
> On 7/19/2017 2:29 PM, mdefurne wrote:
>> Hi Marc,
>>
>> Apparently the minimal pressure at the entrance of the gas rack
>> should be 50 mbar above atmospheric pressure. At the exit of the
>> bottle, it should then be more, about ~100 mbar.
>> However, as long as we have these leaks on the relief valve we would
>> like to stop running with premix. It is precious since there are only
>> three bottle left (or four?). And we need to keep one for the new
>> tiles coming this fall before installation. So not that much left to
>> do all the test we need.
>>
>> We took a look inside the MVT checking all the tube connections for a
>> leak and we did not find any of them suspicious. Is it possible to
>> switch to Argon in order to use the sniffer to check all the
>> connections?
>>
>> Thank you,
>>
>> Maxime
>>
>> Le 18/07/2017 à 11:08, Marc McMullen a écrit :
>>> Hi Maxime,
>>>
>>> We have tested the relief valves and found that they both leak. We
>>> will work with the Matt to find an economical solution to these type
>>> of vavles.
>>>
>>> In the mean time, what is the minimum required pressure for the
>>> premix to your system. The loss can be managed until a better
>>> solution can be acquired.
>>>
>>> Regards,
>>>
>>> Marc
>>>
>>>
>>> On 7/18/2017 10:49 AM, mdefurne wrote:
>>>> Hi Marc,
>>>>
>>>> What are the news concerning the relief valves? Did you replace them?
>>>>
>>>> Have a good day,
>>>>
>>>> Maxime
>>>>
>>>
>>
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