reactor core


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reactor core

n.
The central part of a nuclear reactor where atomic fission occurs.
References in periodicals archive ?
As part of its supervisory activities, ENSI must complex analyzes for system modifications, changes to the reactor core and to evaluate its components as well as fault spectra.
Under the new rules, nuclear power plant operators are for the first time obliged to take concrete steps to prepare for radiation leaks in case of severe accidents, such as huge tsunami and reactor core meltdowns.
Washington, Shawwal 18, 1434, Aug 25, 2013, SPA -- Entergy Corporation's Pilgrim nuclear power plant in Plymouth, Massachusetts remained off line Friday, one day after it was shut down because of a problem with the electrical system that operates the pumps that supply cooling water to the reactor core.
A few months of measurement will reveal the distribution for reactor core fuel and will accelerate the planning and execution of reactor dismantlement, potentially reduce the overall project span by years, reduce overall worker radiation doses, and help Japan and the nuclear power industry in the recovery process from this catastrophic event, Miyadera said.
The new requirements, introduced on July 8, oblige utilities to put in place for the first time specific countermeasures against possible severe accidents like reactor core meltdowns, as well as against huge tsunami -- the direct cause of the nuclear crisis at Tokyo Electric Power Co.
submarine reactor core manufacturing facility in Derby.
For the first two reactors of the second Bulgarian nuclear power plant Izhorskiye Zavody plans to produce 2 reactor vessels internals, 2 top blocks, 2 pressurizers, 8 blocks of steam generators with collectors of the coolant (steam generators, four corps had already been shipped to OJSC ZIO- Podolsk), 2 sets of units for the main circulation pipeline, as well as eight accumulator tanks of the core emergency cooling system and 16 tanks of passive protection of the reactor core, 4-traders has informed.
We have placed the first indigenous fuel complex into the reactor core and we will add more complexes in coming months so that finally we can replace the old core with a new one considering standards," Abbasi said.
A cold shutdown normally means a nuclear reactor's coolant system is at atmospheric pressure and its reactor core is at a temperature below 100 degrees celsius, making it impossible for a chain reaction to take place.
Previously, TEPCO believed that the reactor core at the No.
The other part of the plan involves flooding the primary containment vessel - the structure that surrounds the reactor core.
The second lesson is that on-site storage of spent nuclear fuel poses a separate and perhaps greater risk than nuclear fuel in the reactor core itself.

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