[Pansophy] L2HE-INSP-FWM-R2 Ready for Approval

[Gary Cheng]

Hi Tiffany,

I took a glance at the R2. A couple comments:

1. Step 2 says 32 Polish not 64 uinch as mentioned in revision notes
2. Not sure if "Polish" is an accurate unit/jargon that everyone 
understands. Suggest to use "uinch" or "microinches" instead. On some 
drawings, surface finish is specified in micrometers so "Polish" may not 
be clear.

I'd suggest that we don't let vendor know of our internal hard limit on 
the surface finish, i.e. 64 uinch, so that they don't deliver windows 
with poor finish.

Thanks,
Gary

On 6/8/2022 8:29 AM, Tiffany Ganey wrote:
>
> Good morning Pansophy Team,
>
> A new revision of L2HE-INSP-FWM is in the Ready for Approvals folder.  
> The traveler was revised based on the lessons learned from the 
> inspection of the first two manifolds.
>
> Added Step 1 Note on acceptable deviations from the Port Window 
> Drawing (F10040909) - these are normal deviations for a stock blank 
> flange. Added Step 1 Images Comment field. Added Step 2 instructions 
> on when an NCR is needed for surface finish - based on input from 
> Brian Hartsell (FNAL) and FNAL's Vacuum Window Safety Chapter 
> requirement for surface finish of at least a 64 uinch. Added Step 3 
> instructions on dimensions requiring an NCR - since this manifold is 
> removed from the cryomodule prior to shipment to SLAC, only dimensions 
> critical to vacuum safety will require an NCR.
>
> Tiffany Ganey
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/pansophy/attachments/20220608/5dcd9119/attachment.html>