In nuclear engineering, the void coefficient (more properly called void coefficient of reactivity) is a number that can be used to estimate how much the...

": 24  The reactor had a dangerously large positive void coefficient of reactivity. The void coefficient is a measurement of how a reactor responds to increased...

reactor design had several shortcomings, such as the large positive void coefficient, the 'positive scram effect' of the control rods and instability at...

This property is called the void coefficient of reactivity, and in an RBMK reactor like Chernobyl, the void coefficient is positive, and fairly large...

time had a positive void coefficient of reactivity at typical fuel burnup levels. This meant that the formation of steam bubbles (voids) from boiling cooling...

of a LOCA or of voids appearing in its coolant system (by water boiling, for example). This is measured by the coolant void coefficient. Most modern nuclear...

Nuclear reactor response properties such as Temperature coefficient of reactivity and Void coefficient of reactivity usually refer to the thermodynamic and...

interacting with the fuel. Nuclear fission Nuclear reactor physics Void coefficient https://www.nuclear-power.com/glossary/doppler-broadening/ [bare URL]...

the moderator is also lost and the reaction will stop. This negative void coefficient is an important safety feature of these reactors. In CANDU the moderator...

cooling is lost, but moderation continues. This is termed a positive void coefficient of reactivity. The RBMK tends towards dangerous power fluctuations...

media some defects in the RBMK reactor design such as the positive void coefficient, as well as problems with operator training. Some details were censored...

can provide positive or negative feedback (a positive or negative void coefficient), depending on whether the reactor is under- or over-moderated. Intermediate-energy...

these comparatively low concerns. For example, the IFR's positive void coefficient could be reduced to an acceptable level by adding technetium to the...

2019. "RBMK Reactors | reactor bolshoy moshchnosty kanalny | Positive void coefficient – World Nuclear Association". www.world-nuclear.org. Archived from...

boiling in the reactor, and because of a combination of a positive void coefficient and xenon burnout, the power began to increase dramatically. At ~1:23:30 a...

California, Berkeley in 1942. Subcritical reactor Thermal neutron Void coefficient "INSAG-7: The Chernobyl Accident: Updating of INSAG-1" (PDF). IAEA...

2006. "RBMK Reactors | reactor bolshoy moshchnosty kanalny | Positive void coefficient". World-nuclear.org. 7 September 2009. Archived from the original on...

prevented by natural feedback mechanisms, a concept known as negative void coefficient of reactivity. If the temperature or the amount of steam in the reactor...

enriched uranium (<2% 235U). RBMK Hanford Engineer Works Hanford Site Void coefficient "Plutonium: The First 50 Years". FAS Project on Government Secrecy...

and shut the reactor down. This capability is known as a negative void coefficient of reactivity. Currently offered LWRs include the following ABWR AP1000...

Instead, a massive power excursion (exacerbated by the high and positive void coefficient of the RBMK as it was designed and used at the time) during a mishandled...

suppression of voids formed at the boundary interface in various kinds of alloy-to-metal bonding. These are referred to as Kirkendall voids. The Kirkendall...

example, power plants licensed in the United States require a negative void coefficient of reactivity (this means that if coolant is removed from the reactor...

temporary cooling system, and some of them ruptured; the positive void coefficient of the reactor led to a further power increase. About 14 seconds later...

moderated by groundwater and, presumably, controlled by the negative void coefficient as the water boiled from the heat of the reaction. Uranium from the...

layout of the system. CANDU designs have a positive void coefficient, as well as a small power coefficient, normally considered bad in reactor design. This...

maximise the use of thorium based fuel, by achieving a slightly negative void coefficient. Fulfilling these requirements has been possible through the use of...

however, the reaction slowed or stopped. The reactor thus had a negative void coefficient of reactivity, something employed as a safety mechanism in human-made...

(being cooled with ordinary water instead) which produced the positive void coefficient that was one of a series of flaws in reactor design leading to the...

the fuel, and reactor power decreases. Thus the BWR has a negative void coefficient. Reactor pressure in a BWR is controlled by the main turbine or main...