Some articles on pebble bed reactors, pebble, reactors, reactor:
... The most common criticism of pebble bed reactors is that encasing the fuel in combustible graphite poses a hazard. 2008">citation needed]]] Even a cracked pebble will not burn without oxygen, but the fuel pebble may not be rotated out and inspected for months, leaving a window of ... Some designs for pebble bed reactors lack a containment building, potentially making such reactors more vulnerable to outside attack and allowing radioactive material to ...
... Most pebble-bed reactors contain many reinforcing levels of containment to prevent contact between the radioactive materials and the biosphere ... Most reactor systems are enclosed in a containment building designed to resist aircraft crashes and earthquakes ... The reactor itself is usually in a two-meter-thick-walled room with doors that can be closed, and cooling plenums that can be filled from any water source ...
Famous quotes containing the words pebble and/or bed:
“I seem to have been only like a boy playing on the seashore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.”
—Isaac Newton (16421727)
“Its bed is left a faded paper sheet
Of dead leaves stuck together by the heat
A brook to none but who remember long.”
—Robert Frost (18741963)