Star-fst-l mailing list

[videbaek <videbaek AT bnl.gov>]

Very good news and thnak for the effort in clarifying this.

Flemming



On 2021-10-20 15:34, Tribedy, Prithwish wrote:
> Hello Everyone,
>   Good news!! The report from the chemistry lab has arrived. The water
> contamination in the remaining NOVEC liquid from the opened drum is
> well below 90 ppm (as required for safe operations according to the 3M
> experts).
>
>  We provided the chemists with three samples: 1) from the top layer of
> the opened drum (Sample A TOP), 2) from the bottom of the opened drum
> (Sample B BOT) and, 3) from a newly opened small NOVEC container
> (Sample C SML). All the samples have been checked twice and found to
> have water contaminations at the level of 41-44 ppm. This level of
> contamination is permissible for safe operations as per our previous
> communication with the 3M experts.
>
>  So, we can go ahead and use the NOVEC from the opened drum for the
> upcoming run.
>
>  We're grateful to our colleagues from the Neutrino and Nuclear
> Chemistry group of the Chemistry Department at BNL.
>
>  Regards,
>  Prithwish
>
> Prithwish Tribedy
> Physics Department, Brookhaven National Laboratory
>
> Upton, NY 11973, USA
> Phone: 631-344-8904, 631-344-3853
>
> E-mail: ptribedy AT bnl.gov
>
> > Begin forwarded message:
> > From: "Gokhale, Sasmit" <sgokhale AT bnl.gov>
> >
> > Subject: Water content analysis of C4F9OC2H5 coolant liquid
> >
> > Date: October 20, 2021 at 2:28:28 PM EDT
> >
> > To: Prithwish Tribedy <ptribedy AT icloud.com>, "Yeh, Minfang"
> > <yeh AT bnl.gov>
> >
> > Cc: "Hu, Yu" <yuhu AT bnl.gov>
> >
> > Hello Prithwish,
> >
> > I hope you are doing well. I have finished analyzing the three
> > samples that you gave us. I ran two Karl Fischer titration
> > measurements for each of the three bottles that you provided i.e.
> > one sample was collected from the top and bottom of the each bottle.
> > Below are the results:
> >
> > Sample A BOT:
> > Measurement 1: water content = 43.98 ppm
> > Measurement 2: water content = 44.89 ppm
> >
> > Sample B TOP:
> > Measurement 1: water content = 42.22 ppm
> > Measurement 2: water content = 43.23 ppm
> >
> > Sample C SML:
> > Measurement 1: water content = 41.98 ppm
> > Measurement 2: water content = 41.79 ppm
> >
> > To check the accuracy, I also ran a sample of one of our organic
> > solvents which should have a water content between 60 to 80 ppm and
> > the measured water quantity for that liquid was 63.18 ppm. So it
> > seems the measured values can be trusted.
> >
> > Please let me know if you have any further questions.
> >
> > Best Regards,
> > Sasmit
> >
> > Sasmit Gokhale
> > Research Associate
> > Brookhaven National Lab
> > Building 555
> > Upton, NY 11973
> > Phone: 631-344-4992
> > Email: sgokhale AT bnl.gov
> _______________________________________________
> Star-fst-l mailing list
> Star-fst-l AT lists.bnl.gov
> https://lists.bnl.gov/mailman/listinfo/star-fst-l

--
Flemming Videbaek
senior scientist
videbaek @ bnl.gov
Brookhaven National Lab
Physics Department
Bldg 510D
Upton, NY 11973

phone: 631-344-4106
cell     :  631-681-1596

Attachment: image001.png
Description: PNG image