arl research facilities
The Advanced Nuclear Fuel Test Facility (ANFTF) is a Westinghouse-funded facility located at ARL's Test Site, approximately eight miles from Penn State's University Park campus. It was constructed to economically test and evaluate a wide variety of fuel component designs of Westinghouse's commercial and advanced power reactors. The facility was completed in 1996 and has since been successfully testing the AP600 (Advanced Passive 600-MW Reactors) fuel components.
Simulated Fuel Bundle
The main test objective of ANFTF is to characterize the effect of different fuel grid spacers on the onset of the departure from nucleate boiling (DNB) phenomenon and to quantify the critical heat flux (CHF) as the DNB event occurs. DNB, sometimes known as boiling crisis, is an important multiphase phenomenon that could occur in a reactor. It limits the power output of a reactor for safe operation. Thus the DNB phenomenon needs to be thoroughly characterized for all grid spacer designs before the ones with favorable thermal performance may be selected for further water testing, and subsequent Nuclear Regulatory Commission licensing.