ORNL-2106 - the Molten Salt Energy Technologies Web Site

After the trap has been opened, both sections
are washed carefully to dissolve the bromides and
oxides, and the washings are combined and filtered.
A portion of the filtrate is titrated with hydro-
chloric acid, and the concentration of oxygen is
calculated from this titration. Both the filtrate
and the residue are also analyzed for tho corrosion
products and any other constituents that were
called for in the request for the analysis. The
results of a typical analysis are presented in
Table 2.6.1.
TABLE 2.6.1. ANALYSIS OF NoK DRAINED FROM
THE CIRCULATING COLD TRAP OPERATED IN
INTERMEDIATE HEAT-EXCHANGER TEST STAND B
Determination Woter-Insoluble Totol
Requested Residue (g) (9)
No 564
K 200
Cr 0.6 0.8
Ni 0.9 1.2
Fa 0.1 0.1
U Not detected
Zr Not detected
02 1 20
DETERMINATION OF WATER IN HELIUM
A. S. Meyer, Jr. G. Goldberg
Traces of moisture in the helium used as a
blanket gas in engineering studies can be con-
veniently determined by measuring the
of the gas. However, high and erratic
temperatures are occasionally measure
observed that when copper tubing was
connections from the helium t
dew-point temperat
ing to about 1 p
immediately. Co
as long as 15 min at a rate of abo
were required before comparable
obtained when the gases were passed through a
2-ft length of Tygon tubing. It is therefore recom-
mended that, when possible, connections to the
PERIOD ENDING JUNE 10, 7956
meter be made with metalrather than plastic tubing
when dew points below -4OOF are to be measured.
If plastic tubing is used, the tubing should be
adequately purged with test gas before measure-
ments are taken.
COMPATIBILITY OF BERYLLIUM WITH SOME
TYPICAL ORGANIC DEGREASING AGENTS
A. S. Meyer, Jr. W. J. Ross
Tests have been carried out to determine the
compatibility of beryllium with the organic solvents
being considered as possible agents for degreasing
the machined reactor components. Suggested de-
greasing procedures include 30-min flushing periods
with acetone and ethanol at room temperature and
trichloroethylene and perchloroethylene at their
boiling points. No detectable attack on beryllium
was observed even after a 24-hr period of dynamic
contact with these reagents.
ANP SERVICE LABORATORY
W. F. Vaughan
Analyses of ten samples were performed for the
Wright Air Develooment Center (WADC). The de-
terminations made on the WADC fused-fluoride-salt
samples included total uranium, trivalent uranium,
iron, nickel, and chromium. The hydrogen content
of zirconium hydride liners, which had been en-
cased in lnconel tubing, was also determined.
The bulk of the work of the service laboratory
was the analysis of fused-fluoride-salt mixtures
and alkali metals for the Reactor Chemistry and
Experimental Engineering Groups. A total of 1164
samples was analyzed, which involved 4168 re-
ported results, an average of 3.6 per sample. The
backlog consists of 48,samples. A breakdown of
the work follows:
Number of
Sompl as
Reoctor Chemistry 734
Experimental 337
Engineering
WADC 10
Miscel loneous - 83
Totol 1164
Number of
Reported Results
2601
1375
50
- 142
41 68
129