ORNL-1771 - Oak Ridge National Laboratory

ANP QUARTERLY PROGRESS REPORT
Test Type
Whir I igig
Ther ma I -
convection
loop
Seesaw
TABLE 2.7. RESULTS OF- BERIILLIUM-SODIUM-IN60raEL COMPATIBILITY TESTS
300
300
3 00
300
270
1000
1000
300
300
Temperature
(O Fl
1100 (isothermal)
1200 (isotherma I)
1300 (isothermal)
1400 (isothermal)
Hot zone, 1200
Cold zone, 1060
Hot zona, 1150
Cold zone, 990
Hot zone, 1300
Cold zone, 1130
Hot zone, 1400
Cold zone, 710
Hot zone, 11 00
Cold zone, 740
Concentration of
Be on Surface
of lnconel Tube
2
(CLdcm 1
Re murk s
5.3 to 7.9 Two dark deposits on lnconel onalyzed high in
hery II ium; macroscopically, bery Ilium showed
fine pitted appearance
0.05 No visible deposits on Inconel; beryllium snwoth
but discolored
0.07 No visible deposits on Inconel; beryllium showed
dark discontinuous deposit covering surface
39.6 to 127.0 No visible deposits on Inconel; beryllium surface
Hot zone, 14.0
Middle, 9.9
Cold zone, 20.6
Hot zone, 0.07
Middle, 0.02
Cold zone, 0.01
on the lnconel tube wall surface. X-ray analyses
of the lnconel surfaces indicated that the beryllium
was present as the metal.
In the thermal-convection loops, a deposit was
formed between the contacting ends of the be-
ryllium insert and the lnconel tube. X-ray anal-
yses of these deposits and those found in the
whirligig loops showed beryllium, Inconel, and
lines very similar to sodium bicarbonate. The
beryllium specimens from the seesaw tests were
covered with a black, flaky deposit, which has
been identified by x-ray analysis as beryllium
oxide and beryllium. Again, lines similar to
sodium bicarbonate were observed.
Microscopic examination of the beryllium speci-
men from a whirligig test showed little attack on
30
pitted and partly covered with smull deposits
Loose, adherent gray deposit found in cold zone,
analyzed high in sodium; beryllium smooth but
discolored
lnconel appeared smooth and showed no visible
deposits; beryl1 iurn smooth but d iscolwed
lnconel appeared smooth and showed no visib!e
deposits; beryllium specimen smooth and light
gray in color
Beryllium specimen covered with black flaky
deposit; surface of Inconel tube discolored
Similar to above
the inside surface, but attack up to 5 mils was
observed on the outside surface which was in
contact with the relatively stagnant sodium in the
0.005-in. annular space (Fig. 2.6).
Mass Transfer Tests in Thermal-Convection
bQOpS
G. M. Adamson
Meta I I urgy Di vision
A series of thermal-convection loops is being
operated to determine the effect of dissimilar metal
mass transfer in the beryllium-lnconel-sodium
system. These studies are being carried out in
lnconel loops with short beryllium inserts in the
hot legs; sodium is the circulated fluid. The