A technology for removal of undissolved impurities from a horizontal steam generator using purge water is developed on the basis of a theoretical analysis. A purge with a maximal flow rate is drawn off from the zone with the highest accumulation of sludge in the lower part of the steam generator after the main circulation pump of the corresponding loop is shut off and the temperatures of the heat transfer medium at the inlet and outlet of the steam generator have equilibrated. An improved purge configuration is used for this technology; it employs shutoff and regulator valves, periodic purge lines separated by a cutoff fixture, and a D y 100 drain union as a connector for the periodic purge. Field tests show that the efficiency of this technology for sludge removal by purge water is several times that for the standard method.
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Translated from Élektricheskie Stantsii, No. 2, February 2011, pp. 7 – 11.
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Budko, I.O., Kutdjusov, Y.F., Gorburov, V.I. et al. New technology for purging the steam generators of nuclear power plants. Power Technol Eng 45, 120–124 (2011). https://doi.org/10.1007/s10749-011-0234-4
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DOI: https://doi.org/10.1007/s10749-011-0234-4