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These materials account for much of the risk posed by the waste after the first several hundred years, by which time most of the fission product inventory will have decayed to harmless levels.

New nukes: the Bush administration's plan to use fuel reprocessing as the spark to revive nuclear power will not succeed. Only centralized interim waste storage can make a difference in the near term

Partly as a result of the Chernobyl accident of 1986, the Russian mortality rate has risen by 37 percent, from 10.2 deaths per thousand persons in 1984 to 14.6 in 1993, giving us a grim glimpse of our own future if we continue to ignore the warnings of the health effects of low-level radiation from the ingestion of nuclear fission products. Udall is the highest-ranking public official with the courage and wisdom to tell us why we must end our cold war affair with the atom.

The Myths of August: A Personal Exploration of Our Tragic Cold War Affair with the Atom

In this individual, MII cells were biased towards the presence of the inverted chromosome 4 with the fission products of chromosome 1.

Cytogenetic analysis of chromosomal intermediates from a hybrid zone between two chromosome races of the Sceloporus grammicus complex (Sauria, Phrynosomatidae)

In this fuel, uranium dioxide or uranium nitride is embedded within tristructural-isotropic (TRISO) particles, which use several layers, including a silicon carbide layer, to contain fission products [10].

Assessment of Neutronic Characteristics of Accident-Tolerant Fuel and Claddings for CANDU Reactors

Below ground siting lessens the potential impact of external events such as aircraft collision or natural disasters, while reducing the number of paths for fission product release following any accident.

Flatpack reactors

Some of the fission products must remain isolated for several hundred years, but there is no need for Yucca Mountain-type repositories intended to last millennia.

Too good to leave on the shelf: a reactor 40 years ago doesn't seem like a technology with much potential. But molten salt reactors could actually deliver on nuclear power's long-heralded promise of cheap and limitless energy

Nuclear reactor safety focuses on providing multiple containment barriers and reliable cooling to allow for the safe radioactive decay of short-lived fission products after reactor shutdown.

Nuclear waste and the distant future: regulation of nuclear hazards must be consistent with rules governing other hazardous materials and must balance its risks against those linked to other energy sources

The Chernobyl accident produced an acute, rapid exposure, mostly to [sup.131]I but also to a mixture of other fission products.

Disrupting a delicate balance: environmental effects on the thyroid

Beyond normal operation, in the remote possibility of loss of control, even PBMRs producing somewhat more thermal power than the reactor planned by Eskom can withstand any series of failures without releasing fission products. That statement was proved by an experiment conducted in 1986 on the AVR, a German pebble bed reactor.

Alternative Nuclear Power

In conventional reprocessing, uranium and plutonium are separated from the fission products and other actinides in the spent fuel.

CANDU reactors and advanced fuel cycles

Because the fragments move at nearly the uranium beam's velocity and because they are totally stripped of electrons, "the fission products are much easier to detect than in previous experiments," Bernas explains.

Uranium fission spawns exotic nuclei