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["Capotosto, Michael" <capotosto AT bnl.gov>]

Hey guys, 

For what it's worth, I saw a handful of the ISEG cards had labelmaker labels 
printed that read something to the effect of "70V max setpoint, do not 
change". 

--Mike

-----Original Message-----
From: Star-fst-l <star-fst-l-bounces AT lists.bnl.gov> On Behalf Of Zhenyu Ye
Sent: Wednesday, August 26, 2020 8:42 PM
To: Gerard Visser <gvisser AT indiana.edu>
Cc: star-fst-l AT lists.bnl.gov
Subject: Re: [Star-fst-l] Safety review before module production

I don’t know. Gerrit's slides only show a 60V nominal operational voltage. 

Zhenyu

> On Aug 26, 2020, at 7:32 PM, Gerard Visser <gvisser AT indiana.edu> wrote:
> 
> hi Zhenyu,
>       I think we can make that work. The fine print on connector datasheets 
> has to be checked, I didn't do just now.
>       Do you happen to know (w/ documentation preferably) what voltage we 
> claimed as max operating voltgae in the IST safety review?
> 
>       Gerard
> 
> 
> On 8/26/2020 8:01 PM, Zhenyu Ye wrote:
>> Hi Gerard, It seems that 140V can do the job for the prototypes. What is 
>> the maximum voltage allowed by the cables/hybrids/boards?
>> Zhenyu
>>> On Aug 26, 2020, at 6:55 PM, Gerard Visser <gvisser AT indiana.edu> wrote:
>>> 
>>> hi Zhenyu,
>>>     Is the max bias voltage (operating, on the installed detector) 
>>> decided yet?
>>> 
>>>     - Gerard
>>> 
>>> 
>>> On 8/26/2020 7:10 PM, Ye, Zhenyu wrote:
>>>> Below are the list of things I think we may want to get 
>>>> pre-approval and the responsible person. It would be good if we can 
>>>> collect all the info (material, data sheets, flammability, anything 
>>>> else?) by the end of this week. Please have the info summarized in 
>>>> slides/word document and upload to 
>>>> https://drupal.star.bnl.gov/STAR/event/2020/08/24/star-forward-sili
>>>> con-tracker-meeting/safety-pre-approval-materials
>>>> Maowu: hybrid, T-board
>>>> Michael/Gerard: inner signal cable, connectors
>>>> Yi: flexible cooling tubs, mechanical structure, hybrid and MS 
>>>> gluing and thermal grease
>>>> Zhenyu: glue/encapsulate used for APV and silicon sensor assembly 
>>>> If I miss anything, please let me know.
>>>> Thanks,
>>>> Zhenyu
>>>> On 
>>>> https://drupal.star.bnl.gov/STAR/event/2020/08/24/star-forward-sili
>>>> con-tracker-meeting/safety-pre-approval-materials
>>>> attachment you can find the IST slides for safety review that Flemming 
>>>> found. What we are trying to now is not safety review so not exactly the 
>>>> same.
>>>>> On Aug 19, 2020, at 10:54 PM, Aschenauer Elke-Caroline <elke AT bnl.gov> 
>>>>> wrote:
>>>>> 
>>>>> Zhenyu,
>>>>> 
>>>>> for sure making sure all is compliant with safety is a good idea, but I 
>>>>> think I would start with a list of things we use and pass it on to the 
>>>>> safety committee and ask they see any issues. I think we do not need a 
>>>>> review. If there are issues we deal with it. I personally think there 
>>>>> should be none.
>>>>> Also this would be again more work on Rahul, and he is already 
>>>>> overloaded.
>>>>> 
>>>>> Cheers elke
>>>>> 
>>>>>> On Aug 19, 2020, at 22:56, Ye, Zhenyu <yezhenyu AT uic.edu> wrote:
>>>>>> 
>>>>>> Dear all,
>>>>>> 
>>>>>> As the production starts ramping up, I think we should try to conduct 
>>>>>> a safety review asap to get pre-approval of components/materials that 
>>>>>> will be used in the detector module production soon. These would 
>>>>>> include all the materials to make the detector modules, especially 
>>>>>> Chroming used to coat the cooling tubes, glue/thermal grease used for 
>>>>>> hybrid/MS assembly at NCKU in the next few weeks. We can also include 
>>>>>> the materials used for APV/Silicon sensor assembly as well.
>>>>>> 
>>>>>> Shall we also include the other things, such as the T-board, cable, 
>>>>>> cooling tubes?
>>>>>> 
>>>>>> Zhenyu
>>>>>> 
>>>>>>> On Jul 31, 2020, at 8:20 AM, Gerard Visser <gvisser AT indiana.edu> 
>>>>>>> wrote:
>>>>>>> 
>>>>>>> hi Zhenyu,
>>>>>>>         I believe someone from BNL from the project (Rahul? 
>>>>>>> Flemming?) needs to consult with the appropriate safety officers to 
>>>>>>> get advanced clearance of anything doubtful in the design, before 
>>>>>>> production. This is how it went for instance with the custom cables 
>>>>>>> used in IST and SSD - the cables were not official rated cables, 
>>>>>>> rather only "by design similar" to such, and we submitted the 
>>>>>>> documentation and samples _before_ detector production (but of 
>>>>>>> course, after cable production, which was an investment that had to 
>>>>>>> come first) for approval. The documents were examined, I believe at 
>>>>>>> least one of the cables was given a burn test at BNL, and we got 
>>>>>>> approval to use. Then in the safety review before installation we 
>>>>>>> just referenced that approval and no problems. There was a similar 
>>>>>>> pre=approval process for the Wiener MPOD power supplies, taken care 
>>>>>>> of in the time of FGT detector construction.
>>>>>>>         Flemming could correct this, but I don't believe such actual 
>>>>>>> safety approval is within the scope of this review or committee. But 
>>>>>>> a plan to get approval where needed, must be.
>>>>>>>         Sincerely,
>>>>>>> 
>>>>>>>                 Gerard
>>>>>>> 
>>>>>>> 
>>>>>>> On 7/31/2020 9:10 AM, Ye, Zhenyu wrote:
>>>>>>>> I don’t know when the safety review will take place, but we 
>>>>>>>> certainly need the ES&H clearance before the actual production 
>>>>>>>> starts, because we can’t have all the modules produced and then 
>>>>>>>> learn some of them do not meet the requirement.
>>>>>>> _______________________________________________
>>>>>>> Star-fst-l mailing list

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