Investigation of circulating temperature fluctuations of the primary coolant in order to develop an enhanced MTC estimator for VVER-440 reactors
Creators
- 1. Hungarian Academy of Sciences, Budapest (Hungary). Centre for Energy Research - MTA
Description
Our aim was to develop a method based on noise diagnostics for the estimation of the moderator temperature coefficient of reactivity (MTC) for the Paks VVER-440 units in normal operation. The method requires determining core average neutron flux and temperature fluctuations. The circulation period of the primary coolant, transfer properties of the steam generators, as well as the source and the propagation of the temperature perturbations and the proportions of the perturbation components were investigated in order to estimate the feedback caused by the circulation of the primary coolant. Finally, after developing the new MTC estimator, determining its frequency range and optimal parameters, trends were produced based on an overall evaluation of measurements made with standard instrumentation during a one-year-long period at Paks NPP.
Additional details
Publishing Information
- Journal Title
- Kerntechnik (1987)
- Journal Volume
- 82
- Journal Issue
- 4
- Journal Page Range
- p. 406-419
- ISSN
- 0932-3902
- CODEN
- KERNEU
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 48091453
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Descriptors DEI
- DISTURBANCES; FLUCTUATIONS; HEAT TRANSFER; MODERATORS; NEUTRON FLUX; NOISE; OPTIMIZATION; PAKS-1 REACTOR; PAKS-2 REACTOR; PAKS-3 REACTOR; PAKS-4 REACTOR; PRIMARY COOLANT CIRCUITS; REACTIVITY; REACTOR VESSELS; STEAM GENERATORS; TEMPERATURE COEFFICIENT; TEMPERATURE DISTRIBUTION
- Descriptors DEC
- BOILERS; CONTAINERS; COOLING SYSTEMS; ENERGY SYSTEMS; ENERGY TRANSFER; ENRICHED URANIUM REACTORS; POWER REACTORS; PWR TYPE REACTORS; RADIATION FLUX; REACTIVITY COEFFICIENTS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; THERMAL REACTORS; VAPOR GENERATORS; VARIATIONS; WATER COOLED REACTORS; WATER MODERATED REACTORS; WWER TYPE REACTORS