Residual Heat Removal Device For Reactor core Of A Research Reactor

摘要

The present invention relates to a residual heat removal device for a core of a research reactor, capable of removing the residual heat by distinguishing a high residual heat removal period from a period for removing the residual heat which is relatively low and is continuously generated by installing a flywheel in a primary cooling system and additionally comprising an active residual heat removal system. That is, the downward movement of the core is continuously maintained for delaying a movement inversion time generated due to the upward movement of the core by a natural circulation which is a final residual heat removal state generated in the research reactor with a required time when the reactor is stopped in an emergency situation. An economical gain is obtained in the design of a pump and an emergency generator by not using the pump with a large capacity for continuously generating a high flow to remove initial high residual heat. The economical gain is obtained by not installing a siphon breaker of a safety level by design to make preparations for damage to a pipe of the active residual heat removal system. Thereby, a progressive discrepancy effect is obtained. Also, equipment is constructed to prevent the possibility of bubbles in the pipe which is generated in the research reactor with a high output and a downward movement property of the core even though an additional system like the active residual heat removal system is connected.