(control rods from core)

См. также в других словарях:

• Control rod — PWR control rod assembly, above fuel element A control rod is a rod made of chemical elements capable of absorbing many neutrons without fissioning themselves. They are used in nuclear reactors to control the rate of fission of uranium and… …   Wikipedia

• core — [kôr] n. [ME < OFr cor, prob. < L cor,HEART] 1. the hard, central part of an apple, pear, etc., that contains the seeds 2. the central or innermost part of anything 3. the most important part, as of a matter, discussion, etc.; essence; pith …   English World dictionary

• Loss of pressure control accident — Most commercial types of nuclear reactor use a pressure vessel to maintain pressure in the reactor plant. This is necessary in a pressurized water reactor to prevent boiling in the core, which could lead to a nuclear meltdown. This is also… …   Wikipedia

• Chernobyl disaster — This article is about the 1986 nuclear plant accident in Ukraine. For other uses, see Chernobyl (disambiguation). Chernobyl disaster …   Wikipedia

• Scram — This article is about nuclear reactors. For other meanings, see Scram (disambiguation). A scram or SCRAM is an emergency shutdown of a nuclear reactor though the term has been extended to cover shutdowns of other complex operations, such as… …   Wikipedia

• Startup neutron source — RBMK reactor control rod positions at the moment of the Chernobyl disaster; blue=startup neutron sources (12), yellow=shortened control rods from the reactor bottom (32), grey=pressure tubes (1661), green=control rods (167), red=automatic control …   Wikipedia

• Chernobyl accident — Accident at the Chernobyl (Ukraine) nuclear power station in the Soviet Union, the worst in the history of nuclear power generation. On April 25–26, 1986, technicians attempted a poorly designed experiment, causing the chain reaction in the core… …   Universalium

• Nuclear reactor — Core of CROCUS, a small nuclear reactor used for research at the EPFL in Switzerland This article is a subarticle of Nuclear power. A nuclear reactor is a device to initiate and control a sustained nuclear chain reaction. Most commonly they are… …   Wikipedia

• nuclear reactor — Physics. reactor (def. 4). Also called nuclear pile. [1940 45] * * * Device that can initiate and control a self sustaining series of nuclear fission reactions. Neutrons released in one fission reaction may strike other heavy nuclei, causing them …   Universalium

• Nuclear meltdown — Three of the reactors at Fukushima I overheated, causing core meltdowns. This was compounded by hydrogen gas explosions and the venting of contaminated steam which released large amounts of radioactive material into the air.[1] …   Wikipedia

• Boiling water reactor — A boiling water reactor (BWR) is a type of nuclear reactor developed by the General Electric in the mid 1950s.Fact|date=April 2008 The BWR is characterized by two phase fluid flow (water and steam) in the upper part of the reactor core. See… …   Wikipedia