Chemical Processing Department Monthly Report: July 1957 Page: 19 of 107
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controls cooling water to the compressor jacket. To eliminate
overheating from this cause an orifice was installed in the by-
pass line to assure a supply of cooling water at all times. The
compressor operated satisfactorily following the replacement of
the eight damaged rotor blades and bearings.
5. L-3 Tube Bundle
The L-3 tube bundle in the plutonium concentration package was
regasketed on July 18 due to g slight leak at the top flange.
Inspection of the original flexitallic gaskets revealed corro-
sion deterioration. Since similar failures have been observed
before, teflon gaskets were substituted.
6. 241-A Waste Farm Vapor System
Several small leaks developed in the drain leg and body of the
de-entrainer vessel in the off-gas vapor line from the underground
waste storage tanks. Replacement of the vessel and inspection of
the buried vapor header has started.
D. Analytical Control Experience
Considerable increase in the analytical work load resulted from the
presence of organic solvent in the product solution just prior to
the July outage (See IIA, 1, above). Many samples of supposed aqueous
streams contained varied percentages of organic material and required
some ingenuity and adaptation of analytical procedures to determine
total plutonium content.
A comparison was made of analytical results obtained from standard
Gilmont samples of D-2 (coating waste) material and from larger bulk
samples of the same material. The study was undertaken to check the
validity of the uranium and plutonium values from the accountability
viewpoint. No significant difference was found between the two sampling
An intensive review was made of all methods using standard curves.
Recalibratin was performed on the X-ray photometer curve for plutonium
and on the tributylphosphate curve as determined by the oscillometer.
All other methods were found to be in good control.
During the past month a new test for solvent quality, the plutonium
retention test, was received from the Research and Engineering Process
Chemistry group and placed in service.
E. Improvement Experience
(For more detailed information in these and other items see the Research
and Engineering portion of the Chemical Processing Department report.)
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Hanford Atomic Products Operation. Chemical Processing Department. Chemical Processing Department Monthly Report: July 1957, report, August 22, 1957; Richland, Washington. (https://digital.library.unt.edu/ark:/67531/metadc1312193/m1/19/: accessed May 24, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.