Sentence examples for main coolant pump from inspiring English sources
These models mainly include the core, once-through steam generator, nitrogen pressurizer, main coolant pump, flow and heat transfer and ocean motion models.
Non-uniform and asymmetric loop flow mixing in the reactor vessel has been observed in the event of symmetric main coolant pump operation.
The main coolant pump model is important in order to simulate well the primary coolant flow behavior at an early transient.
These models mainly include the core, once-through steam generator, nitrogen pressurizer, main coolant pump, and flow and heat transfer models.
Two real plant transients are selected for simulation in the benchmark: main coolant pump start-up (Phase 1) and coolant mixing tests (Phase 2).
In this paper results are presented from thermal-hydraulic analyses of two postulated transients in the divertor cooling loop system, (i) trip of the main coolant pump in the divertor primary heat transport system, and (ii) loss of heat sink in the divertor cooling system; trip of the secondary side pump.
Similar to current large commercial codes such as RELAP5 and RETRAN series, the four-quadrant analogy curves were adopted for the solution of the transient behaviors of the main coolant pumps.
Numerous fretting damages exist at various parts of nuclear power systems [7], such as reactor fuel assembly, control rod assembly [8], reactor component, steam generator, pressure vessel [9], main pump, and coolant pump.
Five events were selected, that are partial loss of reactor coolant flow, isolation of main steam line, uncontrolled CR withdrawal, reactor coolant pump seizure and loss of feed water heating.
Other main reasons for breakdown are slide failure, CWD unit fault, coolant pump malfunction and hydraulic oil leakage, respectively (refer Table 5).
Based on the momentum conservation equation of the primary coolant and the moment balance relation of the reactor coolant pump, the transient pump total head, the acceleration head and the overcoming friction head during a pump start up are derived.
