The presence of plutonium 240 limits a plutonium sample's usability for weapons or its quality as reactor fuel, and the percentage of plutonium 240 determines its grade (weapons grade, fuel grade, or reactor grade).

As a result the nuclear fuel was damaged, and the core partially melted.

Nuclear powered submarine mishaps include the K 19 reactor accident (1961), the K 27 reactor accident (1968), and the K 431 reactor accident (1985).

Fuel grade plutonium contains from 7 to less than 19 , and power reactor grade contains 19 or more plutonium 240.

Israeli intelligence also believed that the summer of 1981 would be the last chance to destroy the reactor before it would be loaded with nuclear fuel.

There are three main basic models used to estimate the most important process variables of different chemical reactors batch reactor model (batch), continuous stirred tank reactor model (CSTR), and plug flow reactor model (PFR).

The test focused on the switching sequences of the electrical supplies for the reactor.

The major uses of californium 252 in 1982 were, in order of use, reactor start up (48.3 ), fuel rod scanning (25.3 ), and activation analysis (19.4 ).

The steam to the turbines was shut off, beginning a run down of the turbine generator.

By 1994 most californium 252 was used in neutron radiography (77.4 ), with fuel rod scanning (12.1 ) and reactor start up (6.9 ) as important but distant secondary uses.

Reactor D was started on 17 December 1944 and Reactor F on 25 February 1945.

A PFR typically has a higher efficiency than a CSTR of the same volume.

Water causes corrosion of fuel system components (pumps, fuel lines, etc.

Thorium reactor that Nathan Myhrvold's involved in.

The nuclear reactor is the heart of the plant.

I have never built an atomic pile.

Semi batch reactor A semi batch reactor is operated with both continuous and batch inputs and outputs.

Maintaining the correct fuel pressure is done by a fuel pressure regulator.

experimental fuel fabrication

The maximum fuel capacity is 115 liters, with 110 liters usable.

And that bio reactor will lay down in the wound bed.

Heavy water from Trail was used for Chicago Pile 3, the first reactor using heavy water and natural uranium, which went critical on 15 May 1944.

We've got to take that, we've got to make that into a fusion reactor.

I ran out of fuel.

The most common fuels used by FFVs today are unleaded gasoline and ethanol fuel.

We only got out to walk and get gas.

The gas tank is empty.

The fuel injector ensures that the fuel is broken down into small droplets, and that the fuel is distributed evenly.

Fuel economy In 2004 UPS announced that it would save fuel by minimizing left turns.

The reactor required an enormous amount of graphite blocks and uranium pellets.

Because of short supplies of fuel, these generators are fed with a locally produced fuel that is extracted from plastic.

Now, it's kind of nuts to work on a new nuclear reactor.

This made reactor plutonium unsuitable for use in a gun type weapon.

Powered by fossil fuel derived energy.

The Wright Taylor engine had a primitive version of a carburetor, and had no fuel pump.

Because of the positive void coefficient of the RBMK reactor at low reactor power levels, it was now primed to embark on a positive feedback loop, in which the formation of steam voids reduced the ability of the liquid water coolant to absorb neutrons, which in turn increased the reactor's power output.

Over a distance of the drivers achieved an average speed of over .

Although, I might argue that, technically, every pile is atomic.

The heat is carried away from the reactor and is then used to generate steam.

My car burns a lot of gas.

This car consumes a lot of fuel.

It is also used as a honey plant.

(235U is only 1.26 lighter than 238U.

This is the conventional nuclear fuel cycle.

We're spending a lot of time on fuel cells right now.