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BOILING REACTOR--THE PERSPECTIVE DEVICE IN NUCLEAR POWER PLANTS (in Russian)

Journal Article · · Elektr. St.
OSTI ID:4725514
;
An increase of the power level of boiling water reactors to a sufficiently high value results in excessive heat transfer losses caused by friction, inhibiting the circulation of the heat transfer agent and resulting in instabilities in the liquid flow. However, the power fluctuations which may reach as much as 20% when the heat transfer agent is at atmospheric pressure, decrease sharply at higher pressures. Increase of the loading also increases the amplitude and the frequency of the power oscillations but this again is counteracted by increasing the pressure. At a given, usually high power level, the so-called resonance instability may arise, observed by a sudden rise of the amplitude of the oscillations. Good results were obtained at the Argonne National Laboratory with the BWR: the reactor designed for 42 Mw, operated in a stable manner at pressures up to 62 when tested at elevated pressures; the fluctuations did not exceed 2%. The secondary circuit controls, the system which is thus self-regulating. The steps taken with the BWR for keeping the steam free from fission products were quite successful: the activity of the internal surface of the turbines reached only 5 mr/hr, thus being below the maximum permissible level. Superheating the steam, especially nuclear superhent, represents an excellent method to increasing the efficiency of the boiling water reactor systems. (TTT)
Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-17-009880
OSTI ID:
4725514
Journal Information:
Elektr. St., Journal Name: Elektr. St. Vol. Vol: 33: No. 4
Country of Publication:
Country unknown/Code not available
Language:
Russian

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Related Subjects

BOILING
CONTAMINATION
CONTROL
EFFICIENCY
FISSION PRODUCTS
FLUID FLOW
FREQUENCY
FRICTION
HEAT TRANSFER
LIQUID FLOW
LOSSES
OSCILLATIONS
POWER
POWER PLANTS
PRESSURE
REACTOR TECHNOLOGY
REACTORS
STABILITY
STEAM
SUPERHEATING
SURFACES
TURBINES
WATER COOLANT