NDLI: Preventing inadmissible erosion-corrosion thinning from occurring in the diffuser segments of feedwater supply control systems of power units at nuclear power stations equipped with RBMK-1000 reactors

Content Provider	Springer Nature Link
Author	Tomarov, G. V. Shipkov, A. A. Golubeva, T. N. Greblov, P. N.
Copyright Year	2013
Abstract	Results obtained from investigations of erosion-corrosion processes that occur during operation of the feedwater supply control systems used in power units of nuclear power stations equipped with RBMK-1000 reactors and the sensitivity of these processes to variations in the chemical composition of metal and in the flow path geometry are presented. It is found that local erosion-corrosion thinning of the walls in the diffuser segments of feedwater supply control systems occur mainly due to intense mass transfer in the near-wall region taken in combination with a low content of chromium. Hydrodynamic simulation was carried out, and it was shown based on its results that local erosion-corrosion thinning of the walls of pipeline segments downstream of the valves controlling the supply of feedwater to power units of nuclear power stations equipped with RBMK-1000 reactors can be prevented by subjecting them to appropriate modernization. It is found that the above mentioned diffuser parts can be made more resistant to erosion-corrosion wear by keeping the content of chromium in the main metal and weld joints at a level of no less than 0.25% and concurrently reducing the hydrodynamic effect in the zones of weld connections.
Starting Page	338
Ending Page	344
Page Count	7
File Format	PDF
ISSN	00406015
Journal	Thermal Engineering
Volume Number	60
Issue Number	5
e-ISSN	15556301
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2013-04-17
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	local erosion-corrosion control valve feed water power unit nuclear power station Engineering Thermodynamics, Heat and Mass Transfer
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Nuclear Energy and Engineering

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An investigation of the effect of hydrodynamics of flow on erosion-corrosion resistance of components of a feedwater control assembly used in power units of nuclear power plants equipped with RBMK-1000 reactors

Erosion-corrosion wear of the components of pipeline systems at nuclear power stations equipped with RBMK-1000 reactors

Water chemistry in power units at nuclear power stations equipped with RBMK-1000 reactors

An investigation of the effect of hydrodynamics of flow on erosion-corrosion resistance of components of a feedwater control assembly used in power units of nuclear power plants equipped with RBMK-1000 reactors

Preparations for shifting the power units of nuclear power stations equipped with RBMK-1000 reactors for operation with a 2 year interval between repairs

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Formation of corrosion products in the coolant and deposits in the multiple forced circulation circuit of a nuclear power station equipped with an RBMK-1000 reactor

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Preventing inadmissible erosion-corrosion thinning from occurring in the diffuser segments of feedwater supply control systems of power units at nuclear power stations equipped with RBMK-1000 reactors

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