NUCLEAR REACTOR PLANT WITH DEVICE FOR CHECKING AIR EXHAUSTED INTO VENTILATION PIPE Russian patent published in 1996 - IPC

FIELD: nuclear power engineering. SUBSTANCE: nuclear reactor plant has containment with nuclear reactor, pressure-relief piping connecting containment with ventilation pipe, filter mounted on piping, and device for checking air exhausted into ventilation pipe. Plant has, in addition, intake piping with sampler connected to pressure relief pipe downstream of filter, and thinning facility mounted on intake piping. Device for checking air exhausted into ventilation pipe is, essentially, metering line with measuring section incorporating filters and monitors. Metering line is connected to intake piping downstream of thinning facility and measuring section is connected to pressure-relief piping through return line. Intake piping has heater installed upstream of thinning facility. Thinning radioactive mixtures makes it possible to use standard measuring instruments even in case of accidents involving heavy exhaust of radioactive materials. EFFECT: improved control of air exhausted into atmosphere. 3 cl, 2 dwg