Thermophysical Reactivity Control of RBMK-1000

Abstract

Abstract. In this paper, viewed thermophysical characteristics of the moderator water graphite reactor RBMK. Indicated possibilities of controlling thermal state of graphite stack by regulation composition of the purge gas. Presents experimental results, but static thermal state characteristics of graphite moderator RBMK-1000. Developed a software code for integral characteristic engineering calculations, that determine value of margin reactivity reactor RBMK-1000, in the slow transients.

Modernisation of Boiler Unit Automation System at Acting Power Station

“…All this leads to reduction of heat losses, and as a consequence keeps the amount charges down [8]. This question is also relevant in the context of atomic power stations where special attention is paid to the control systems parameters [9]. For nuclear energy modeling of different processes is widely used for security purposes [10] with further analysis of more optimal adjustments [11].…”

Calculation of the Thermal State of the Graphite Moderator of the RBMK Reactor

“…In practice, it is assumed that all modes of reactor operation the maximum temperature of the graphite should not exceed the values of threshold temperature 750-800 ºC [1][2][3]. In addition, fluctuations in the average temperature of the graphite masonry (moderator) lead to corresponding changes in the reactivity of the reactor, as these units are RBMK reactors offer a significant magnitude positive effect of reactivity on the temperature of the moderator [1].…”

Aspects of calculating the temperature for the graphite stack of the RBMK reactor

“…The graphite stack temperature is one of the main parameters that limit the RBMK reactor operation. In practice, it is assumed that the maximum graphite temperature should not exceed the threshold temperature of 750...800 ºC in all operational conditions of the reactor [2,3]. In addition, variations in the average temperature of the graphite stack (moderator) cause changes in the reactor reactivity, as the RBMK units have a positive effect on reactivity relative to the moderator temperature [1,3].…”