Adjustment system for fluid fuel nuclear reactors

Claim 1

IN A FLUID FLOW ADJUSTMENT SYSTEM FOR SUPPLYING LIQUID TO A FLUID-FUEL NUCLEAR, A SUPPLY RESERVOIR UNDER PRESSURE HIGHER THAN THAT IN THE REACTOR AND CONTAINING A LIQUID, A CONDUIT IN COMMUNICATAION WITH THE SUPPLY RESERVOIR TO THE REACTOR FOR SUPPLYING LIQUID FROM SAID RAESERVOIR TO THE REATOR, AT LEAST THREE VALVES FOR SAID CONDUIT AND CONNECTED IN SERIES FOR CONTROLLING THE FLOW OF LIQUID FROM SAID RESERVOIR TO THE REACTOR, SIAD VALVES SEPARATING SAID CONDUIT INTO TWO SERIES-CONNECTED SECTION BETWEEN THE END VALVES, A WHEEL FOR EACH VALVE TAO ACTUATE SAME TO OPEN AND CLOSED POSITIONS, A SLOT FORMED IN THE PERIPHERY OF EACH OF SAID WHEELS, AND A SILABLE LOCKING BAR COOPERATING WITH THE WHEELS OF SAID VALVES AND ADAPTED FOR MOVEMENT INTO THE WHEEL SLOTS WHEN THE VALVES ARE ALL IN CLOSED POSITIONS TO THEREBY PREVENT OPERATION OF THE VALVES, SAID LOCKING BAR HAVING A RELEASE SLOT WHICH WHEN ALIGNED WITH THE SLOT IN THE WHEEL OF ONE VALVE PERMITS OPERATAION OF SAID ONE VALVE AND PREVENTS OPERATION OF THE OTHER VALVES.