The United Kingdom’s National Nuclear Laboratory (NNL) and Studsvik Scandpower, Inc. have concluded agreements which appoint Studsvik Scandpower as agent for the sale and distribution of the ENIGMA fuel performance software.
The ENIGMA code is a state-of-the-art fuel performance code, which has been extensively validated and offers customers a comprehensive modeling capability across a range of fuel types.
Studsvik and NNL have worked together in coupling CMS and ENIGMA to provide detailed pin-power histories from CMS into ENIGMA for thermo-mechanical fuel performance assessment, including quantities like:
ENIGMA calculates the thermo-mechanical performance of a LWR fuel rod in both steady-state and transient conditions. UO2, mixed oxide (MOX), Inert Matrix (Yttria Stabilized Zirconia), and (U,Gd)O2 fuel types, as well as Zircaloy-2, Zircaloy-4, ZIRLO, and a range of proprietary low-corrosion alloys, can be modeled. ENIGMA incorporates the models necessary for LWR fuel performance analysis under normal and “off-normal” conditions.
Using detailed pin-power histories from CMS, ENIGMA models such principle processes and properties as:
ENIGMA has been validated against a large database of LWR rod irradiations including test reactor data (e.g. Halden, Riso, Studsvik, BR3, and others) and commercial data; in total, over 500 rod irradiations with exposures to 60 MWd/kgHM (and limited data to 80 GWD/T).
Studsvik will continue to develop ENIGMA along with collaboration from NNL.
For further information, please view the technical resource section or contact us.
