Chemical Processing Department Monthly Report: July 1957 Page: 28 of 107
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D. Analytical Cotntrol Operation
1. Control Statistics
Month Icmples Determinations
June 2621 5841
July 3177 7262
2. Building Maintenance
Principal 222-S and 219-S Building maintenance included repair
of a steam leak in the 101 tank gang valve, installation of a
sand guard around the 207-SL retention basins, repair of a
steam sump jet in tunnel, installation of a combination glass
and plastic hood window in room 4-E where hydroflioric acid
fumes were attacking the glass.
3. Equipment Experience
During the latter part of June considerable trouble was ex-
perienced with the isotron source and the electronic circuit
of the mass spectrometer. The instrument was subsequently
taken out of service and a general overhaul of the instru-
ment is currently in progress. During the interim period
the analytical analysis, requiring the use of the mass
spectrometer, are being performed by the Hanford Laboratories
An Alpha Scintillation Counter (on loan from the Research
and Engineering Group) is now being used for duplicate
counting of radioassay discs. This program has been under-
taken to aid the Process Chemistry Group evaluate the
desirability of using these instruments for routine control.
4. Assistance to Process'
Examination of a black solid deposit from a Redox steam line
revealed it to be largely Fe304 (magnetite) presumably from
corrosion. Results have been forwarded to operating per-
sonnel for evaluation.
Continuation of a previously started sampling and assay
program has led to an apparent satisfactory practice in
measuring the nitrate formation in the Redox inert gas
system. Samples taken after the water cooling spray at
the burner have shown an average nitrate concentration
of 0.27 grams per 1000 cu. ft. with a concentration range
of 0.11 g to 0.78 g. These figures indicate approximately
2 pounds of nitric acid entering the system each month.
Experiments with variations in the burner air supply are
now planned since it is possible that a small increase in
the excess oxygen in the burner may decrease the nitrate
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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/m1/28/: accessed May 21, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.