Laka Foundation

Publication Laka-library:
High Level Waste (1985)

AuthorFOE Energy Campaign
DateAugust 1985
Classification 6.01.5.51/44 (WASTE - STORAGE ON LAND (f.i. SALT / CLAY) (INCL. SYNROC))
Front

From the publication:

HIGH-LEVEL RADIOACTIVE WASTE: WHAT IS IT?

What is high- level waste? The official definition is:

"Waste in which the temperature may rise significantly as a result of its
radioactivity, so that this factor has to be taken into account in designing
storage or disposal facilities ."

"High- level waste"(HLW) is usually held to refer to the liquid waste products
resulting from the "reprocessing" operation, which extracts the uranium and
plutonium from spent reactor fuel for future use in a fast- breeder reactor, or
for making nuclear bombs. However, the term is sometimes used to describe the
spent fuel itself, particularly if no decision has been taken to reprocess it.

What are these wastes composed of? The liquid waste is an acid solution consisting
mainly of "fission products" which emit beta- radiation, comprising a large number
of elements from arsenic (No.33 in the periodic table) to europium (No.63). But there
is also a group of radionuclides formed from uranium by successive neutron capture,
the "actinides" (that is, elements following actinium in the periodic table). These are
mainly alpha- radiation emitters; they are very highly radiotoxic if taken into the
body, and include the various isotopes of plutonium, americium, and curium.

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