EMERGENCY SYSTEM OF BORIC ACID SOLUTION SUPPLY TO ACTIVE ZONE OF NPP REACTOR Russian patent published in 2017 - IPC G21C15/18 

FIELD: power industry.

SUBSTANCE: emergency system for boric acid solution supply to the core of the NPP reactor contains a storage tank with a solution of boric acid, pipelines, emergency feed pump, a suction pipeline that connects the pump sump with the system tank and the standard stock tanks of boric acid solution, a pressure pipeline connected to a regular pipeline supplying boric acid solution to the reactor core, recirculation pipelines, overflow and drainage and tank filling, pipelines of the system are equipped with adjusting, shut-off equipment and instrumentation. The system is provided with an autonomous source of boric acid and an autonomous supply of boric acid solution to the active zone of the reactor, one end of which is connected to a pressure pipeline immediately in front of the reactor and the other to an autonomous source of boric acid through a connection device and an autonomous feed pump.

EFFECT: invention makes it possible to provide the parking concentration of boric acid in the primary circuit in case of failures with complete blackout.

4 cl, 1 dwg