[Hallb-engineering] PI1028 Alarms

David Kashy kashy at jlab.org
Tue Sep 20 08:22:00 EDT 2011


Please finish the cooling and start filling today.
Please let Andy Sandorfi know when the buffer dewar is filling and on 
cold return.

Also since I'm going to California tomorrow at 5am I'll need to hand off 
the pager, and since I'll be out of town this weekend I won't be able to 
take it back till Monday. Anyone up to cover me?


On 9/20/2011 8:06 AM, bruhwel at jlab.org wrote:
> I changed the set point to 1.4 ata and the JT valve closed it up nicely.
> The coils are at 28K so we are almost there and this will do I think
> unless you feel differently.
> Regards,
> Krister
>> Hello,
>> The PI1028 HIGH and HIHI alarms are set at 1.3 at 1.4 and we are
>> controlling the JT valve at 1.45 ... so your getting pager alarms.  I have
>> changed HIGH to 1.5 and HIHI to 1.6 ata.  This is in the danger zone so we
>> will need to react quickly to a page to prevent problems.  The other
>> option is to control pressure at a lower level like 1.35 ata.
>> Please let me know if you like the former, later or a possible other
>> option.
>> Regards,
>> Krister

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