RCPs usually use a combination of fluid dynamic bearings and hydrostatic bearings in the radial bearing assembly (water-lubricated; close to the primary coolant) and oil lubricated bearings used in the thrust (axial) bearing assembly (in the motor section). Flywheel. The flywheel provides flow coastdown in case of loss of power. Auxilliary systems.

Feb 11, 2014 · These reactors are heavy water cooled and moderated pressurized water reactors. Instead of using a single large reactor vessel as in a PWR or BWR, the nuclear core is …

In physics, nucleons are subatomic particles that form an atomic nucleus, and a nucleon is either a proton or a neutron. Nucleons are bound together in the atomic nucleus via the residual nuclear force, and they account for 99.9 percent of the atom’s mass.

The bremsstrahlung is electromagnetic radiation produced by the acceleration or deceleration of a charged particle when deflected by magnetic fields or another charged particle.

In the physics of nuclear decays, a radioactive equilibrium exists when a radioactive nuclide is decaying at the same rate it is being produced. The disintegrating nucleus is usually referred to as the parent nucleus, and the nucleus remains as the daughter nucleus after the event.

Operation within the Nuclear Enthalpy Rise Hot Channel Factor – F limits prevents departure from nucleate boiling (DNB) during accidents limiting from DNB point of view.

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There is not enough time for energy transfer as heat to take place to or from the system in these rapid processes. In real devices (such as turbines, pumps, and compressors), heat losses and losses in the combustion process occur. Still, these losses are usually low compared to overall energy flow, and we can approximate some thermodynamic processes by …

Nov 21, 2014 · In general, the neutron cross-section is an effective area that quantifies the likelihood of certain interaction between an incident neutron and a target object. The standard unit for measuring a nuclear cross-section is the barn.

Fast neutrons (>0.5 MeV) primarily rely on the recoil proton in (n,p) reactions. Materials rich in hydrogen, such as plastic scintillators, are best suited for their detection. Thermal neutrons rely on nuclear reactions such as the (n,γ) or (n,α) reactions to produce ionization.