Removal of heat from a nuclear reactor under emergency conditions
Abstract
Abstract A P.W.R. with a steam boiler in the same pressure vessel as the reactor core is provided with an emergency water supply which, on detection of a leak in the reactor coolant circuit, can first be connected as feed to the boiler to reduce reactor coolant pressure by abstracting heat and, can then be connected to the reactor coolant circuit to maintain the core flooded. The feed of the emergency water supply to the boiler and hence the pressure reduction can be carried out with low powered pumps operated from standby electrical supplies and, with the pressure reduced low powered pumps can again be used to maintain the core flooded. The emergency water supply can serve a dual function by being arranged also to act as a shield for the reactor.
Inventors
- 👤 Leslie Birts
- 👤 Ronald Scott Challender
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |