b'Summary This research project has developed advanced In-Situ Fiber Optic Instru-mentation to measure Distributed Temperatures and Mechanical Strain for prototypic LWR heated simulant fuel rods for LOCA Transients. These diagnostic techniques can be trans-ferrable to advanced fuel being tested at Department of Energy laboratories.References[1.]T.K. Howard, M. Moussaoui, J. Miller, A. Weiss, W. Marcum, Overivew of the Out-of-Pile Transient, Blowdown, Reflood, and CHF Experiment at OSU, Proceedings of NURETH-19, March 2022[2.]A.B. Luna, M. Anderson, M.Corradini, Deconvolving of Strain from Fiber Optic Sen-sor Measurements at Elevated Temperatures, Trans. of ANS Winter Meeting, Phoenix AZ, Nov. 2022[3.]M. Moussaoui, J.Miller, T.K. Howard, W. Marcum, Out-of-Pile CHF LOCA Experiment, Transactions of the ANS Winter Meeting, Phoenix AZ, Nov. 2022[4.]J.Miller, T.K. Howard, W. Mar-cum,Thermal Hydraulic Analysis of Annular Natural Circulation, Transactions of ANS Winter Meeting, Phoenix AZ, Nov. 2022[5.]M. Moussaoui, J.Miller, T.K. Howard, W. Marcum, Out- Figure 4. Characterization of natural circulation velocity in the O-SERTTA of-Pile Transient Blowdownexperiment using the Luna fibers and thermal pulse method. (Top Left) Thermocouple response (Center and Bottom Left) Luna Fiber Response (Right) Experiment, Proceedings ofO-SERTTA schematicNURETH-20, August 20232023|AFC ACCOMPLISHMENTS 185'