Corrosion of 304L and 316 in gadolinium nitrate neutron poison solutions

Conference · Tue Dec 31 00:00:00 EST 1991

OSTI ID:10129940

Chandler, G T; Anderson, M H

Pitting corrosion has occurred on AISI Type 304L stainless steel (304L) conductivity probes used to monitor liquid levels of gadolinium nitrate neutron poison solutions (GPS). An electrochemical and immersion test program has led to a better understanding of the cause of corrosion of 304L probes. Results indicate that the alternating voltage applied to the probes to monitor contact with solution is the primary factor in the corrosion of the probes. A chloride-containing dye and low pH also contribute to the corrosion process, but appear to play a secondary role. AISI Type 316 stainless steel (316) was found to behave similarly to 304L in GPS, while nickel-based alloys such as Hastelloy G30, Hastelloy C22, and Inconel 625 were found to be more susceptible to corrosion as compared to 304L.

• Research Organization: Westinghouse Savannah River Co., Aiken, SC (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC09-89SR18035
• OSTI ID: 10129940
• Report Number(s): WSRC-MS-91-502; CONF-920458-2; ON: DE92009434
• Resource Relation: Conference: Corrosion `92 conference and exhibition,Nashville, TN (United States),27 Apr - 1 May 1992; Other Information: PBD: [1991]
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
36 MATERIALS SCIENCE
STAINLESS STEEL-304L
PITTING CORROSION
STAINLESS STEEL-316
NUCLEAR POISONS
MONITORING
GADOLINIUM NITRATES
POLARIZATION
DYES
RHODAMINES
PRODUCTION REACTORS
SAVANNAH RIVER PLANT
220600
360105
RESEARCH
TEST
TRAINING
PRODUCTION
IRRADIATION
MATERIALS TESTING REACTORS
CORROSION AND EROSION