Background and Derivation of ANS-5.4 Standard Fission Product Release Model

Beyer, Carl E. ; Turnbull, Andrew J.

Pacific Northwest National Laboratory (U.S.)

关键词: Fission, Volatle Fission, Oxide Fuels, Fuel Rods;    Oxides;    Standards;    Fuel Rods;    Fission Products;   

DOI  :  10.2172/1033086
RP-ID  :  PNNL-18490
RP-ID  :  AC05-76RL01830
RP-ID  :  1033086

美国|英语

来源: UNT Digital Library

【 摘 要 】

This background report describes the technical basis for the newly proposed American Nuclear Society (ANS) 5.4 standard, Methods for Calculating the Fractional Release of Volatile Fission Products from Oxide Fuels. The proposed ANS 5.4 standard provides a methodology for determining the radioactive fission product releases from the fuel for use in assessing radiological consequences of postulated accidents that do not involve abrupt power transients. When coupled with isotopic yields, this method establishes the 'gap activity,' which is the inventory of volatile fission products that are released from the fuel rod if the cladding are breached.