FIELD: water-moderated nuclear reactors. SUBSTANCE: bypass pipeline installed in reactor unit at shutoff valve of injection piping has throttle and steam-gas mixture indicator. Injection piping and bypass pipeline sections between cover and steam space are rising up without water seals; entrance in bypass pipeline from injection piping is organized in vertical section of injection piping and exit from bypass pipeline, directly downstream of shutoff valve. EFFECT: improved safety of nuclear power station. 1 dwg
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