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[en] The UKAEA Prototype Fast Reactor (PFR) has three forced recirculation boilers employing steam drum separators. Oscillations of drum water level have been observed with the levels of all three drums moving in phase, and on occasions with one drum out of phase with the others: antiphase oscillations. An explanation of the antiphase oscillations is described which has its roots in the theory originally developed to describe parallel tube instability in once-through boilers. Here that theory is extended to cover the case of parallel boilers of the recirculation type, each with its own (nonlinear) level control system. (author)
Source
British Nuclear Energy Society, London; 342 p; ISBN 0 7277 0269 6; 
; 1986; p. 159-166; British Nuclear Energy Society; London (UK); 3. international conference on boiler dynamics and control in nuclear power stations; Harrogate (UK); 21-25 Oct 1985; Price Pound65.00
; 1986; p. 159-166; British Nuclear Energy Society; London (UK); 3. international conference on boiler dynamics and control in nuclear power stations; Harrogate (UK); 21-25 Oct 1985; Price Pound65.00