a region of fertile material placed around or within the core of a reactor for the purpose of conversion. By extension, the term blanket may be used when the purpose is transformation of non-fertile material.
Additional main installation data (*):
(a) maximum expected operating power and/or neutron flux;
(b) main type(s) of nuclear material and enrichment;
(c) moderator;
(d) reflector, blanket;
(e) coolant.