Evaluation of precipitates used in strainer head loss testing : Part II. precipitates by in-situ aluminum alloy corrosion.
- Nuclear Engineering Division
Vertical loop head loss tests were performed with 6061 and 1100 aluminum (Al) alloy plates immersed in borated solution at pH = 9.3 at room temperature and 60 C. The results suggest that the potential for corrosion of an Al alloy to result in increased head loss across a glass fiber bed may depend on its microstructure, i.e., the size distribution and number density of intermetallic particles that are present in Al matrix and FeSiAl ternary compounds, as well as its Al release rate. Per unit mass of Al removed from solution, the WCAP-16530 aluminum hydroxide (Al(OH){sub 3}) surrogate was more effective in increasing head loss than the Al(OH)3 precipitates formed in situ by corrosion of Al alloy. However, in choosing a representative amount of surrogate for plant specific testing, consideration should be given to the potential for additional head losses due to intermetallic particles and the apparent reduction in the effective solubility of Al(OH){sub 3} when intermetallic particles are present.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USNRC
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 1012799
- Report Number(s):
- ANL/NE/JA-63724; NEDEAU; TRN: US201110%%358
- Journal Information:
- Nucl. Eng. Des., Vol. 241, Issue 5 ; May 2011; ISSN 0029-5493
- Country of Publication:
- United States
- Language:
- ENGLISH
Similar Records
Evaluation of precipitates used in strainer head loss testing : Part I. chemically generated precipitates.
Evaluation of precipitates used in strainer head loss testing : Part III. Long-term aluminum hydroxide precipitation tests in borated water.