Substitution of fixed seats and elimination of stellite in valve of loop B of recirculating reactor

With the objective of achieving a tight sealing of isolation valves in the recirculation pump was made replacing the fixed seats in the two isolation valves of the pump. Installing new seats allow the pump without the need to put the caps on the jet pump nozzle and recirculation. Has enabled the replacement parts installation without stellite eliminating cobalt contribution to cycle of these components.