Search results
Results From The WOW.Com Content Network
Control rod assembly for a pressurized water reactor, above fuel element Control rods are used in nuclear reactors to control the rate of fission of the nuclear fuel – uranium or plutonium . Their compositions include chemical elements such as boron , cadmium , silver , hafnium , or indium , that are capable of absorbing many neutrons without ...
In March 2002, plant staff discovered that the borated water that serves as the reactor coolant had leaked from cracked control rod drive mechanisms directly above the reactor and eaten through more than six inches [23] (150 mm) of the carbon steel reactor pressure vessel head over an area roughly the size of a football (see photo).
The core also contained 2 control rods and 8 safety rods. The plant was designed for 430 MWt and 125 MWe using a newer uranium oxide fuel, but the plant was closed before the fuel was ever ordered. A 168 MWe oil-fired boiler was added in 1966 to utilize the turbine-generator during periods when the reactor was not producing power.
City of Hamilton [21] Auglaize Hydroelectric Plant: Bryan: 4.5: City of Bryan [21] Captain Anthony Meldahl Locks and Dam: Felicity: 105: American Municipal Power [21] Largest hydroelectric plant on the Ohio River. Located on the Kentucky side of the river. The City of Hamilton retains 51.4% of the power generation. [22] Greenup Lock and Dam ...
In 1994, the core was replaced with an S6W reactor, designed for the then-new Seawolf-class submarine. The prototype is equipped with an automatic reactor fill system that can flood the reactor with borated water in the event of a loss-of-coolant accident. The S8G reactor is in use in Ohio Class Submarines and has a power rating of 26.1 MW. [5]
The metal used for the tubes depends on the design of the reactor. Stainless steel was used in the past, but most reactors now use a zirconium alloy which, in addition to being highly corrosion-resistant, has low neutron absorption. The tubes containing the fuel pellets are sealed: these tubes are called fuel rods. The finished fuel rods are ...
Inside the core of a typical pressurized water reactor or boiling water reactor are fuel rods with a diameter of a large gel-type ink pen, each about 4 m long, which are grouped by the hundreds in bundles called "fuel assemblies". Inside each fuel rod, pellets of uranium, or more commonly uranium oxide, are stacked end to end.
Its single Combustion Engineering pressurized water reactor weighs 425 tons and has steel walls 8 + 1 ⁄ 2 inches (220 mm) thick. The containment building is 116 feet (35 m) in diameter and 189 feet (58 m) tall, including the dome. Its concrete walls are 3 + 1 ⁄ 2 feet (1.1 m) thick with a 1 ⁄ 4-inch-thick (6.4 mm) steel liner plate. The ...