11. In an effort to make the system more responsive, hydronic designers added a circulating pump to move the water through the system. 12. The integrated circulating pump of the later arrangement could also be used as a fire engine in the event of an emergency. 13. The failure of ESWS circulating pumps was one of the factors that endangered safety during the 1999 Blayais Nuclear Power Plant flood. 14. Four of the main circulating pumps ( MCP ) were active; of the eight total, six are normally active during regular operation. 15. On a hot-water system, the expansion tank should be drained, the circulating pump cleaned and lubricated and air bled out of the radiators. 16. The main circulating pumps have the capacity of 5, 500 12, 000 m?/ h and are powered by 6 kV electric motors. 17. The first of six VVER-1000 reactors at the Zaporozhye nuclear plant was switched off after a leak was discovered in a circulating pump . 18. A fire nearly broke out during a test trial of the main circulating pump when a pipe cracked and oil began to come out, 19. The engine was water-cooled with a circulating pump , driven by a gear from the cam shaft . There was a large radiator coil provided. 20. Engine coolant is directed by the thermostat to the inlet of the circulating pump and is returned directly to the engine, bypassing the radiator.
