FORMATION AND RELEASE OF CORROSION PRODUCTS BY CARBON STEEL IN WATER AT pH*SUP 10/, 150 AND 205 C. Paper 5 of PROCEEDINGS OF THE TRIPARTITE CONFERENCE ON TRANSPORT OF MATERIALS IN PRESSURIZED-WATER NUCLEAR SYSTEMS, CHALK RIVER, FEBRUARY 28 AND MARCH 1, 1961
Technical Report
·
OSTI ID:4865066
Out-of-reactor loop experiments were conducted to determine the release of corrosion products from carbon steel exposed to pHl0 water at l50 and 205 deg C. Emphasis was placed on the release during the first few hundred hours of exposure of new surfaces. The effects of oxygen in the water and of rust initially on the surfaces were determined. The corrosion rate of l50 and 205 deg C was found to be close to that at 260 to 3l5 deg C. The rate of release of the corrosion product to the water was very low and an adherent magnetite film was formed. The concentration of crud in the water was always less than l ppm, and after initial exposure of the steel the crud level quickly declined to less than 0.l ppm. The presence of oxygen increased crud release rates. The experiments indicated that a carbon steel system could be conditioned to provide an adherent magnetite corrosion product film, clean water conditions, a low corrosion rate, and a very low crud release rate, by operation for several weeks at l50 deg C with pHl0 water free of oxygen. (auth)
- Research Organization:
- Atomic Energy of Canada Ltd., Chalk River, Ont.
- Sponsoring Organization:
- Sponsor not identified
- NSA Number:
- NSA-16-004490
- OSTI ID:
- 4865066
- Report Number(s):
- AECL-1265(Paper 5); CEI-126
- Country of Publication:
- Canada
- Language:
- English
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