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Updating of Control Valves for the Feed System of the Secondary Coolant Circuit of the VVÉR-1000 Unit

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Power Technology and Engineering Aims and scope

Abstract

Limitations in the operation of D u 400 shutter control valves used in the feed system of secondary coolant circuits of VVÉR-1000 power-generating units are described. A method is suggested for removing these limitations by equipping the control valves with an unloaded gate and anti-cavitation protection of the flowing channel. The technical characteristics and description of the design of the updated D u 400 control valve are presented. Problems in experimental study of the updated valve and its in-situ testing are described. Results of vibroacoustic tests and of measurement of the thickness of branch pipes and adjoining conduits of the valve are presented.

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REFERENCES

  1. USSR Inventor's Certificate No. 1451389, “Valve gate,” Byull. Izobr., No. 2 (1989).

  2. N. P. Zubkov et al, “Erosion-resistant control valve Du 400,” Tyazh. Mashinostr., No. 10 (1998).

  3. N. P. Zubkov and F. Kh. Usmanov, “Unloaded-type erosion-resistant control valve Du 225,” Élektr. Stantsii, No. 1 (2003).

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Authors and Affiliations

  1. All-Russian Research Institute for Nuclear Engineering (VNIIAM). Kalininskaya Nuclear Power Plant, Russia

    N. P. Zubkov, A. Ya. Filin & N. M. Aksenov

Authors
  1. N. P. Zubkov
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  2. A. Ya. Filin
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  3. N. M. Aksenov
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Zubkov, N.P., Filin, A.Y. & Aksenov, N.M. Updating of Control Valves for the Feed System of the Secondary Coolant Circuit of the VVÉR-1000 Unit. Power Technology and Engineering 38, 37–40 (2004). https://doi.org/10.1023/B:HYCO.0000029632.50769.7c

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  • DOI: https://doi.org/10.1023/B:HYCO.0000029632.50769.7c

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