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Conference Article: Pressure transients analysis of a high-temperature gas-cooled reactor with direct helium turbine cycle

Dang, M.; Dupont, J.F.; Jacquemoud, P.; Mylonas, R. (Eidgenoessisches Inst. fuer Reaktorforschung, Wuerenlingen (Switzerland))

Abstract

The direct coupling of a gas cooled reactor with a closed gas turbine cycle leads to a specific dynamic plant behaviour, which may be summarized as follows: a) Any operational transient involving a variation of the core mass flow rate causes a variation of the pressure ratio of the turbomachines and leads unavoidably to pressure and temperature transients in the gas turbine cycle. b) Very severe pressure equalization transients initiated by unlikely events such as the deblading of one or more turbomachines must be taken into account. This behaviour is described and illustrated through results gained from computer analyses performed at the Swiss Federal Institute for Reactor Research (EIR) in Wurenlingen within the scope of the Swiss-German HHT project

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key words: bypasses; computer calculations; computerized simulation; direct cycle cooling systems; gas turbines; helium cooled reactors; htgr type reactors; reactor licensing; reactor shutdown; transients; bypasses; computer calculations; computerized simulation; direct cycle cooling systems; gas turbines; helium cooled reactors; htgr type reactors; reactor licensing; reactor shutdown; transients
Reference:
International Atomic Energy Agency, Vienna (Austria). International Working Group on Gas-Cooled Reactors. Specialists meeting on gas-cooled reactor safety and licensing aspects, Lausanne, Switzerland, 1-3 September 1980. Summary report. Jan 1981
International Atomic Energy Agency, Vienna (Austria). International Working Group on High-Temperature Reactors.
IWGGCR--1, pp:137-153