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[Gerard Visser <gvisser AT indiana.edu>]

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-silicon-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-silicon-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.
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