[Hallb-engineering] Torus polarity probe
bruhwel at jlab.org
Mon May 17 10:35:49 EDT 2010
I think what needs to be clarified is the term "alarm" ...
It is a bad practice to ignore alarms, but is this an alarm or a
convenience? The Torus Polarity was installed by Arne to aid in data
crunching, and now it has made its way into an alarm. I think that
whomever provides the alarms should provide the guidance otherwise it
becomes a reactionary process I think. I talked to the Run Coordinator
and he asked me which ones to ignore, but I think this becomes too much
of a who does what when issue and is subject to change due to the
uncontrollable nature of reacting to someone else's alarm hander. It
would more than likely be a better course of action to ask who puts
things in alarm handlers and what guidance they give shift personnel. I
originally thought it would be a good idea to go to the Counting House
and see what things they are calling alarms, but in retrospect this
becomes too subjective as its up to the people on shift and will change
as they modify GUI's and Alarm Handlers. It may be best for the authors
of these alarms to provide guidance on the severity. In the past we
have had shift personnel call the on-call for items like light bulbs
being burned out in the Counting House. Maybe the duties of the on-call
needs to get clarified. In my opinion the on-call generally only needs
to worry about the items on the on-call paging alarm handler, supplies
that will not hold the desired current, sometimes target related items
that have no EPICS variables, and things that are obvious show
stoppers. The rest is up to shift personnel and the training there of
by other operators.
I will go to the Counting House and see what screens they are using.
Mac Mestayer wrote:
> Hello Dave;
> I'm currently the PDL. It's bad practice to tell shift
> people to ignore an alarm, unless it's temporary.
> I suggest that you post a message to the effect that
> the alarm is not valid and should be ignored FOR NOW.
> You (or Krister or Steve) should post it in multiple
> places (post-it notes at various places, on white-board,
> on today's banner for current run (talk to run coordinator)),
> etc. Please indicate that it's temporary, also date the
> notes and sign them.
> Tell me if this is ok, and when it's been done.
> regards, Mac
> "mestayer at jlab.org", (757)-269-7252
> On Mon, 17 May 2010, David Kashy wrote:
>> Sounds good,
>> then someone should talk to the PDL and have them explain to the shift
>> workers that this is diagnostic for them and not to call the on call
>> unless the magnet current it going down!
>> Krister Bruhwel wrote:
>>> If I understand this correctly, its not part of the pager, but part of
>>> an alarm system that the counting house folks made and use and should
>>> not issue pages to the on-call pager. They more than likely made a
>>> manual page based on some GUI screen or alarm handler they set up.
>>> These are the only Torus signals that our alarm hander sends to the
>>> on-call pager:
>>> David Kashy wrote:
>>>> I consider this a nusiance alarm and it should be data logged but
>>>> removed fromt he on call pager.
>>>> The guys in the counting room should be watching the data from the
>>>> detector and know if the torus is working properly.
>>>> Please remove it from the pager and keep an eye on the read back. Also
>>>> check it out for a bad connection, or water dripping somewhere...
>>>> Steve Christo wrote:
>>>>> Between about 3:00am on 5/15 and midnight 5/16 the polarity probe
>>>>> on the
>>>>> Torus was oscillating and giving an alarm based on the signed torus
>>>>> current. The problem seems to have fixed itself and has not
>>>>> resulted in
>>>>> any significant problems. It might be worth while to investigate the
>>>>> cause during the next hall opening.
>>>>> Hallb-engineering mailing list
>>>>> Hallb-engineering at jlab.org
>>>> Hallb-engineering mailing list
>>>> Hallb-engineering at jlab.org
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