QUARTERLY REPORT OF THE SOLUTION MATERIALS SECTION FOR THE PERIOD ENDING JANUARY 31, 1959

Technical Report · Fri Jan 30 04:00:00 EST 1959

DOI:https://doi.org/10.2172/4254112· OSTI ID:4254112

Griess, J C; Savage, H C; Greeley, R S; English, J L; Bolt, S E; Hess, D N; Neumann, P D; Shor, A J; Snavely, E S; Ulrich, W C

Deposition of U, Cu, and Ni sulfates from dilute simulated HR fuel solution circulated through a heated Zircaloy-2 pipe section is reported. It was found that deposition occurred under boiling conditions in horizontal pipes because of a gas space which prevented wetting in the upper part of the pipe. Other salt deposition studies in an in-pile loop are reported. Effectiveness of oftwo different hydroclone mountings in removing corrosion products from a loop was studied. Results of chemical stability tests or aqueous solutions containing /sub 2/SO/sub 4/ at 300 C are given and discussed. Fluoride ion had no suppressing effect on stress corrosion cracking caused by O/sub 2/- and Cl/sub 2/ containing phosphate-treated boiler water. The pretreatment of U-bend specimens of type 347 stainless steel in UO/sub 2/SO/sub 4/-H/sub 2/SO/sub 4/-CuSO/sub 4/at 100 to 300 C gave substantial protcction against stress-corrosion cracking in the same solution containing chlorides. Cast type 347 stainless steel was found more resistant to chloride-induced stress-corrosion cracking than wrought material. Cold-working destroyed the resistance. Corrosion of Zircaloy-2 by the heavy- phase of a high-temperaturc UO/sub 2/SO/sub 4/ solution was found to be insignificant; Cu had no effect. In l00-hr tests at 250 C Ti was not corroded signifieantly by OZ-free UO/sub 2/SO/sub4/ solutions, and no solution instability was noted. The corrosion rate of Incoloy 804 was tolerable but less than type 347 stainless steel in UO/sub 2/SO/sub 4/ at l00 to 300 C. A hard Cr-rich electrolyzed coating on 304 stainless steel was found to be useless in high- temperature fuel solutions but was stable at l00 in chloride-free environment. For preceding period see CF-58-10-95.) (T.R.H.)

• Research Organization: Oak Ridge National Lab., Tenn.
• DOE Contract Number: W-7405-ENG-26
• NSA Number: NSA-13-013213
• OSTI ID: 4254112
• Report Number(s): CF-59-1-79
• Country of Publication: United States
• Language: English

Related Subjects

BOILING
CASTING
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
CHROMIUM
COLD WORKING
COPPER
COPPER SULFATES
CORROSION
CYCLONE SEPARATORS
DEPOSITS
DEUTERIUM COMPOUNDS
EFFICIENCY
ELECTROLYSIS
FLUORIDES
FUELS
GASES
HIGH TEMPERATURE
IN PILE LOOPS
IONS
LITHIUM SULFATES
NICKEL SULFATES
OXYGEN
PHOSPHATES
REPORT
SOLUTIONS
STABILITY
STAINLESS STEELS
SULFATES
SULFURIC ACID
TITANIUM
URANIUM SULFATES
URANYL COMPOUNDS
WATER
ZIRCALOY