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Re: Rad-hard oil
On Thu, 19 Aug 1999, Keith Welch wrote:
> <!doctype html public "-//w3c//dtd html 4.0 transitional//en">
> <html>
> If anyone has any information on suppliers of lubricating oil that is radiation
> resistant (if there is such a thing), could you forward company or point
> of contact information.
> <p>Thanks in advance.
> <p>--
> <br>Keith Welch
> <br>Thomas Jefferson National Accelerator Facility
> <br>Newport News VA
> <br>welch@jlab.org
> <br>Ph: (757)269-7212
> <br>FAX:(757)269-5048
> <br> </html>
>
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Keith,
In the late 60's & early 70's, I used NRRO-358 (Nuclear Radiation
Resistant Oil) purchased, I think, from Chevron (I can look it up if need
be). The viscosity decreased slowly until it reached its dose limit of, I
think, 4 X 10^4 Gy. Then it increased very rapidly due to polymerization.
This probably happens to any oil, but the dose limit on NRRO-358 was
supposedly much higher than other type oil. At that time, it cost 7 $/qt.
Les me know if I can be of further help. I still have the records
someplace in my files.
Les Fraley
Colorado State University, Emeritus
les@lamar.colostate.edu
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