11. DFR was a loop-type FBR cooled by primary and secondary NaK circuits, with 24 primary coolant loops. 12. This economizer preheats the steam generator feedwater at the steam generator inlet using the lowest-temperature primary coolant . 13. In the rare occurrence of a fuel failure during normal operation, the primary coolant can enter the element. 14. The lithium captures neutrons from the reactions to breed tritium, and also acts as the primary coolant loop. 15. If the fuel cladding around the fuel develops holes, then fission products can leak into the primary coolant . 16. I'm assuming you mean primary coolant . 17. Thus, in boiling water reactors, in contrast to pressurized water reactors, there is only a single, primary coolant loop. 18. Primary coolant pumps also have been added to the list of equipment detailed in the annex of the agreement.19. In contrast to a boiling water reactor, pressure in the primary coolant loop prevents the water from boiling within the reactor. 20. Therefore, if the primary coolant is removed, there are not enough slow neutrons to sustain the reaction and the core cools.
