Active Waste Materials Corrosion and Decontamination Tests

Danielson, MJ ; Elmore, MR ; Pitman, SG

Pacific Northwest National Laboratory (U.S.)

关键词: Radioactive Wastes;    Surface Cleaning;    Decontamination;    Liquid Wastes;    36 Materials Science;   

DOI  :  10.2172/760086
RP-ID  :  PNWD-3051
RP-ID  :  AC06-76RL01830
RP-ID  :  760086

美国|英语

来源: UNT Digital Library

【 摘 要 】

Stainless steel alloys, 304L and 316L, were corrosion tested in representative radioactive samples of three actual Hanford tank waste solutions (Tanks AW-101, C-104, AN-107). Both the 304L and 316L exhibited good corrosion performance when immersed in boiling waste solutions. The maximum general corrosion rate was 0.015 mm/y (0.60 mils per year). Generally, the 304L had a slightly higher rate than the 316L. No localized attack was observed after 122 days of testing in the liquid phase, liquid/vapor phase, or vapor phase. Radioactive plate-out decontamination tests indicated that a 24-hour exposure to 1 {und M} HNO{sub 3} could remove about 99% of the radioactive components in the metal film when exposed to the C-104 and AN-107 solutions. The decontamination results are less certain for the AW-101 solution, since the initial contamination readings exceeded the capacity of the meter used for this test.