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Three Mile Island accident - Wikipedia

Three Mile Island accident - Wikipedia

The Three Mile Island accident was a partial meltdown of reactor number 2 of Three Mile Island Nuclear Generating Station (TMI-2) in Dauphin County, Pennsylvania, near Harrisburg, and subsequent radiation leak that occurred on March 28, 1979. It is the most significant accident in U.S. commercial nuclear power plant history. On the seven-point International Nuclear Event Scale, the incident .

Category:Nuclear reactors - Wikimedia Commons

Category:Nuclear reactors - Wikimedia Commons

Counter-Current Flow Reversal.png 636 × 513;20 . Nuclear reactor core meltdown temperature event line EN.svg 881 × 633;23キロバイト. Nuclear reactor core meltdown temperature event line PL.svg 881 × 633;22キロバイト. Nuclear Reactor, NC State (14730768351) .

CS level designer here, what would a coolant pump system .

CS level designer here, what would a coolant pump system .

I'm counter-strike level designer whose current map revolves on an underground pipeline transporting coolant for a nuclear reactor (cheesy I know). In case you aren't familiar with counter-strike, each map has two bombsites that terrorists attempt to attack. The second bombsite of my map is a pump system that keeps the coolant flowing.

When it comes to Nuclear Power, Small Isn't Beautiful, Nor .

When it comes to Nuclear Power, Small Isn't Beautiful, Nor .

Aug 30, 2015 · There doesn't appear to be much, if anything, new about NuScale. The only known immediate nuclear deaths from a nuclear accident, in the US, were from a mini-SL-1 reactor that made nuclear fallout in rural Idaho. [3] In 1968, in Lucens Switzerland, there was a mini-underground nuclear reactor, which had a major accident.

Timeline of the Fukushima Daiichi nuclear disaster - Wikipedia

Timeline of the Fukushima Daiichi nuclear disaster - Wikipedia

Fukushima Dai-ichi (dai-ichi means "#1"), is a multi-reactor nuclear power site in the Fukushima Prefecture of Japan. The Fukushima Daiichi nuclear disaster occurred after a 9.0 magnitude Tōhoku earthquake and subsequent tsunami on 11 March 2011. This offshore earthquake, near the island of Honshu, produced a large tsunami in Japan, and a tsunami warning for over 20 countries within and .

Heat pipe - Wikipedia

Heat pipe - Wikipedia

A heat pipe is a heat-transfer device that combines the principles of both thermal conductivity and phase transition to effectively transfer heat between two solid interfaces.. At the hot interface of a heat pipe, a liquid in contact with a thermally conductive solid surface turns into a vapor by absorbing heat from that surface. The vapor then travels along the heat pipe to the cold interface .

Organic nuclear reactor - Wikipedia

Organic nuclear reactor - Wikipedia

An organic nuclear reactor, or organic cooled reactor (OCR), is a type of nuclear reactor that uses some form of organic fluid, typically a hydrocarbon substance like polychlorinated biphenyl (PCB), for cooling and sometimes as a neutron moderator as well.. Using an organic fluid had a major advantage over conventional designs using water as the coolant. Water tends to .

Flooding (nuclear reactor core) - Wikipedia

Flooding (nuclear reactor core) - Wikipedia

Flooding refers to a fluid flow phenomenon whereby counter-current two-phase flow is reversed and runs concurrent in the direction of the initial gas/vapor phase flow when filling, or "flooding", a nuclear reactor core with coolant. This phenomenon is generally discussed with respect to a loss-of-coolant accident (LOCA). As this phenomenon proceeds, annular flow running counter-current .

ToughSF: Thermal Decomposition of CO2 with Nuclear Heat

ToughSF: Thermal Decomposition of CO2 with Nuclear Heat

Jun 07, 2019 · Otherwise it would be far better to use a gas core nuclear reactor, at 50 000K the CO2 will be completely destroy, and because the reactor fuel is gas, so you could extract the fission products in real time and keep the transuranium elements (the long live radioactive waste) inside the reactor until they are consume completely.

Plate Heat Exchanger (PHE) - saVRee

Plate Heat Exchanger (PHE) - saVRee

Introduction. Plate heat exchangers are one of the most common types of heat exchanger employed today; the other common type of heat exchanger is the shell and tube heat exchanger.The spiral heat exchanger is also used for industrial applications, but its use is .

Section 2.7 - High Energy Particle Engines - Wikibooks .

Section 2.7 - High Energy Particle Engines - Wikibooks .

Feb 04, 2018 · The current loop produces a magnetic field that deflects the ions, producing a reaction force. Because of the large area covered by the loop, which is mostly empty, it can develop a relatively large force for a given mass. It is limited in direction and strength by the local solar wind or ion flow.

High Purity Germanium Detectors - HPGe - Nuclear Power

High Purity Germanium Detectors - HPGe - Nuclear Power

HPGe detector with LN2 cryostat Source: canberra.com. High-purity germanium detectors (HPGe detectors) are the best solution for precise gamma and x-ray spectroscopy.In comparison to silicon detectors, germanium is much more efficient than silicon for radiation detection due to its atomic number being much higher than silicon and due to lower average energy necessary to create an electron-hole .

Cyclone Separator Design, Components and How it Works - saVRee

Cyclone Separator Design, Components and How it Works - saVRee

Introduction. Cyclonic separation is a means of separating different liquid phases (different liquid densities), or, separating particles from a gas stream.Cyclone separators often form part of a pre-cleaning stage prior to a gas or liquid being discharged. This article focuses on the gas cyclone separator. Cyclone Separators. What's in a Name? A cyclone separator has several colloquial names.

Crack In Fukushima Structure May Be Leaking Radiation .

Crack In Fukushima Structure May Be Leaking Radiation .

SillySnake writes with this excerpt from Reuters: "Tokyo Electric Power Co (TEPCO) said it had found a crack in the pit at its No.2 reactor in Fukushima, generating readings 1,000 millisieverts of radiation per hour in the air inside the pit. 'With radiation levels rising in the seawater near the plant, we have been trying to confirm the reason why, and in that context, this could be one .

Chernobyl's Hot Mess,

Chernobyl's Hot Mess, "the Elephant's Foot," Is Still .

By the fall of 1986, the emergency crews fighting to contain the nuclear disaster at Chernobyl made it into a steam corridor beneath failed reactor Number 4. Inside this chamber they found black lava that had oozed straight from the core. The most famous formation was a solid flow that their radiation sensors firmly told them not to approach.

Shell and Tube Type Heat Exchanger - saVRee

Shell and Tube Type Heat Exchanger - saVRee

Introduction. Shell and tube heat exchangers are a common site throughout the engineering world and are one of the two most common types of heat exchanger; the other common type being the plate heat exchanger.. Shell and tube heat exchangers have a simple design, robust characteristics and relatively low purchase and maintenance costs.They also have a very high heat transfer rate although they .

Neutron Diffusion Theory - Nuclear Power

Neutron Diffusion Theory - Nuclear Power

Neutron Diffusion Theory. In previous section we dealt with the multiplication system and we defined the infinite and finite multiplication factor.This section was about conditions for a stable, self-sustained fission chain reaction and how to maintain such conditions. This problem contains no information about the spatial distribution of neutrons, because it is a point geometry problem.

Nuclear weapon design - Wikipedia

Nuclear weapon design - Wikipedia

Nuclear weapon designs are physical, chemical, and engineering arrangements that cause the physics package of a nuclear weapon to detonate. There are three existing basic design types: pure fission weapons, the simplest and least technically demanding, were the first nuclear weapons built and have so far been the only type ever used in an act of war (over wartime Japan).

Nuclear reactor - Wikipedia

Nuclear reactor - Wikipedia

A nuclear reactor, formerly known as an atomic pile, is a device used to initiate and control a self-sustained nuclear chain reaction.Nuclear reactors are used for electricity generation and in nuclear marine propulsion.Heat from nuclear fission is captured in a liquid, gas or multiphase working fluid, and passed through heat exchangers to steam turbines.

Gas Cooled Reactors Shut Down In UK - Slashdot

Gas Cooled Reactors Shut Down In UK - Slashdot

Plus the sum of all regulatory/political costs of building a nuclear reactor in an anti nuclear environment. An IFR plant can cost less than a similarly sized water cooled reactor (BN800 reactor estimated at US 2 billion, so 2xBN800 is about 20% larger than your usual 1330MWe reactor), however an IFR reactor uses essentially free fuel (spent .

Nuclear Modular Accident Analysis Program Software (MAAP .

Nuclear Modular Accident Analysis Program Software (MAAP .

MAAP5 models are not intended to replace other software codes that deal with large break guillotine ruptures, which require analysis of the rapid flow reversal within the core, however, it is intended to provide a best estimate description of the core, reactor coolant system, steam generators and containment needed for engineering assessments .

Reactor Thermal Power - Nuclear Power

Reactor Thermal Power - Nuclear Power

In each nuclear reactor, there is a direct proportionality between the neutron flux and the reactor thermal power.The term thermal power is usually used, because it means the rate at which heat is produced in the reactor core as the result of fissions in the fuel. Nuclear power plants also use the total output of electrical power, but this value is due to the efficiency of conversion (usually .

Timeline of Nuclear Diplomacy With Iran | Arms Control .

Timeline of Nuclear Diplomacy With Iran | Arms Control .

November 10, 2019: Iranian officials announce that Iran has taken a step on construction of the planned nuclear reactor and begun pouring concrete for the unit at Bushehr. Officials add that uranium enriched to 4.5 percent uranium-235 may be used to fuel the reactor. November 11, 2019: France, Germany, the United Kingdom and the European Union issue a joint statement warning that Iran's .

No-Melt Nuclear 'Power Balls' Might Win A Few Hearts And .

No-Melt Nuclear 'Power Balls' Might Win A Few Hearts And .

Jul 30, 2020 · In a complete nuclear cycle breeders take uranium and turn it in to power, plutonium and fissile waste. Then a burner reactor takes the fissile waste and converts it to power and depleted waste.

High Purity Germanium Detectors - HPGe - Nuclear Power

High Purity Germanium Detectors - HPGe - Nuclear Power

HPGe detector with LN2 cryostat Source: canberra.com. High-purity germanium detectors (HPGe detectors) are the best solution for precise gamma and x-ray spectroscopy.In comparison to silicon detectors, germanium is much more efficient than silicon for radiation detection due to its atomic number being much higher than silicon and due to lower average energy necessary to create an electron-hole .

Ohio Nuclear Power Scandal

Ohio Nuclear Power Scandal

Jul 24, 2020 · For Davis-Besse, the report predicted 1,400 peak early fatalities, 73,000 peak early injuries, 10,000 peak cancer deaths, and 84 billion in property damage, in the event of a reactor core .

Why the molten salt fast reactor (MSFR) is the

Why the molten salt fast reactor (MSFR) is the "best" Gen .

A simultaneously "nuclear", permanent, and in‐time solution to mankind's energy‐related problems would require the relatively rapid manufacture of 10,000–30,000 genuinely sustainable, full‐sized (~1 GW e) reactors.This "nuclear renaissance" would have to be implemented with breeder reactors because today's commercial nuclear fuel cycle is unsustainable and based upon a fuel .

Advanced design of reactor coolant pump motors

Advanced design of reactor coolant pump motors

mine whether a spare reactor coolant pump motor would be required to sup-port continued operation of units 2 and 3 of the San Onofre Nuclear Generating Station (SONGS) until expiration of the current operating license. The two units – 1150-MWe pressurized water reactors – have been in service since 1983 and 1984, respectively . Each unit has

Boiling water reactor - Wikipedia

Boiling water reactor - Wikipedia

A boiling water reactor (BWR) uses demineralized water as a coolant and neutron moderator.Heat is produced by nuclear fission in the reactor core, and this causes the cooling water to boil, producing steam. The steam is directly used to drive a turbine, after which it is cooled in a condenser and converted back to liquid water. This water is then returned to the reactor core, completing the loop.

Nuclear Stability

Nuclear Stability

On the other hand nuclei, such as 19 O, which have excess of neutrons, decay by negative beta decay, emitting a negative electron and an antineutrino.In this process, one of the neutrons in the nucleus is transformed into a proton. The number of protons is thus increased from 8 to 9 (number of neutrons is reduced from 11 to 10), so that the resulting nucleus is an isotope of fluor, 19 F, which .