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The reactor vessel used in the first US commercial nuclear power plant, the Shippingport Atomic Power Station.Photo from 1956. A reactor pressure vessel (RPV) in a nuclear power plant is the pressure vessel containing the nuclear reactor coolant, core shroud, and the reactor core.
The blocks are stacked, surrounded by the reactor vessel into a cylindrical core with a diameter and height of 14m × 8m. [14] The maximum allowed temperature of the graphite is up to 730 °C. [15] The reactor has an active core region 11.8 meters in diameter by 7 meters height. There are 1700 tons of graphite blocks in an RBMK-1000 reactor. [13]
(This is in contrast to early Soviet civil PWR designs where embrittlement occurs due to neutron bombardment of a very narrow pressure vessel.) Reactor sizes range up to ~500 MWt (about 165 MWe) in the larger submarines and surface ships. The French Rubis-class submarines have a 48 MW reactor that needs no refueling for 30 years.
English: Generation II nuclear reactor vessel sizes of similar power output: PWR: typical Westinghouse 4 loop reactor pressure vessel (3411MWt, 1125MWe). CANDU: Darlington reactor calandria (2657MWt, 935MWe). BWR-4 reactor pressure vessel (3293MWt, 1098MWe). RBMK-1000 reactor steel vessel, biological shields, and water tank (3200MWt, 1000MWe).
The reactor pressure vessel is manufactured from ductile steel but, as the plant is operated, neutron flux from the reactor causes this steel to become less ductile. Eventually the ductility of the steel will reach limits determined by the applicable boiler and pressure vessel standards, and the pressure vessel must be repaired or replaced.
S2C reactor. USS Tullibee (SSN-597) S2G reactor. USS Seawolf (SSN-575) S2W reactor. USS Nautilus (SSN-571) S2Wa reactor. replacement reactor for USS Seawolf (SSN-575) S3G reactor. land-based prototype for USS Triton (SSN-586); located at Kesselring site; S3W reactor. USS Skate (SSN-578) USS Sargo (SSN-583) USS Halibut (SSGN-587) S4G reactor
As in any design, the fluidized bed reactor does have its draw-backs, which any reactor designer must take into consideration. [6] Increased reactor vessel size: Because of the expansion of the bed materials in the reactor, a larger vessel is often required than that for a packed bed reactor. This larger vessel means that more must be spent on ...
GE further developed the BWR-1 design with the 70 MW Big Rock Point (9×9, 11×11, 12×12) reactor, which (like all GE BWR models following Dresden 1) used the more economical direct cycle method of heat transfer, but disposed with the external recirculation pumps in favor of natural circulation (an unusual strategy that only the 55 MW ...