Determination of Chromium Content in Carbon Steel Pipe of NPP using ICP-AES 


Vol. 32,  No. 12, pp. 4270-4274, Dec.  2011
10.5012/bkcs.2011.32.12.4270


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  Abstract

A method is proposed for determining chromium content in the carbon steel pipes of a nuclear power plant (NPP) to evaluate wall thinning caused by flow-accelerated corrosion (FAC). A flat file was used to obtain filings samples. To assess sampling quality, a disk form of SRM 1227 was ground with the flat file, and the amount of Cr in the filings was determined by ICP-AES. The content of chromium in the filings of SRM 1227 was estimated as six times higher than the certified value due to the contamination of chromium in the file. To eliminate chromium contamination from the file, it was coated with WC-12Co using high-velocity oxygen-fuel (HVOF) spraying systems. After obtaining filings samples using the coated file, Cr content in four types of disk-form SRMs was determined by ICP-AES. The recoveries of Cr in the disk-form SRMs were in the range of 95.4-102.6%, with relative standard deviations from 0.43 to 3.0%. The Cr contents in the filings collected from the used outlet headers of the nuclear power plants using the flat file coated were in the range of 0.11- 0.19%.

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  Cite this article

[IEEE Style]

K. Choi, C. H. Lee, S. Han, Y. J. Park, K. Song, "Determination of Chromium Content in Carbon Steel Pipe of NPP using ICP-AES," Bulletin of the Korean Chemical Society, vol. 32, no. 12, pp. 4270-4274, 2011. DOI: 10.5012/bkcs.2011.32.12.4270.

[ACM Style]

Kwang-Soon Choi, Chang Heon Lee, Sun-Ho Han, Yong Joon Park, and Kyuseok Song. 2011. Determination of Chromium Content in Carbon Steel Pipe of NPP using ICP-AES. Bulletin of the Korean Chemical Society, 32, 12, (2011), 4270-4274. DOI: 10.5012/bkcs.2011.32.12.4270.

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ISSN(Print) 0253-2964
ISSN(Online) 1229-5949