PURPOSE: To improve a vibro-isolating effect ever so better, by installing a leg as directed to a pump casing from the lower part of a reactor pressure vessel, while setting up a groove in which this leg is fitted.
CONSTITUTION: A leg 29 is projectingly installed in the opposite direction to a nozzle 28 formed in a reactor pressure vessel bottom part 21 of an internal pump, namely, toward a casing 24 vertically, and its tip end is made so as to be fitted in a groove 30 installed in an upper part of the casing 24. Therefore, during operation of a reactor, the casing comes to be locked at two spots in consequence whereby its frequency comes high, so a vibro-isolating effect is improvable and, what is more, earthquakeproofness in time of a seismic tremor is also improvable.
| JPH0658119 | [Title of Invention] Internal Pump |
| JPS61101694 | SUPPORTING STRUCTURE FOR TANK TYPE LIQUID-METAL PUMP |
| WO/1992/001293 | BWR TURBOPUMP RECIRCULATION SYSTEM |
TSUCHIYA HIDEO
NAKAMURA MITSUNOBU
MIYAKE HIROYUKI
ONODERA KATSUYUKI
MATSUBAYASHI OSAMU
SUGANO ETSUROU
