2017 | AFC ACCOMPLISHMENTS 24 Accomplishments: Figure 1 provides an overview of the test station prior to in-cell insertion; it consists of two modules on a single test stand.The integral LOCA test apparatus is outlined in blue, while the high-temperature test furnace is outlined in red.The SATS system was initially deployed out-of-cell to examine nonirradiated materials.The same modules were then replicated and modified for in-cell operation (i.e., in ORNL’s fuel hot cell in Building 3525) to examine irradiated fuels and materials.Throughout the design of the SATS system, operational constraints within the hot cell (e.g., spatial and other constraints from the use of manipulators to operate the unit, and limits on the volume and types of gases released from the system) have been thoroughly captured to enable an efficient transition from the out-of-cell module to the in-cell capability.Table 2 summarizes the range of test parameters for each module and test type. Before moving the SATS system into the hot cell, many thermal verification LOCA tests were performed to aid in optimizing the apparatus and the test train for remote operation in the hot cell.Tests were conducted with specimens made from 17×17 pressurized water reactor Zircaloy-4 (300 mm long, 9.50 mm outer diameter, 0.570 mm wall thickness) filled with dense zirconia pellets leaving a cold radial gap of ~0.1 mm. Figure 2 shows test samples from four tests at 1200°C, with the only difference being the internal pressure applied (Results: Zr4-19 no internal pressure and no burst; Zr4-23 pressurized to 4.14 Mpa, burst occurred at 866°C, max strain 27%; Test Zr4-21 pressurized to 6.21 Mpa, burst occurred at 826°C, max strain 37%; andTest Zr4-22 pressurized to 8.27 Mpa, burst at 790°C, max strain 47%).Verification test results show good agreement with prior ANL LOCA test results and provided confidence to move forward with in-cell installation. Figure 3 shows the SATS system after being installed in-cell. A full sequence in-cell LOCA demonstration test was conducted with the SATS system on August 7, 2017.A LOCA integral test with 300-mm-long samples consists of the following sequential steps: stabilize temperature, internal pressure, and steam flow at 300°C; ramp the temperature (~5°C/s) through ballooning and burst to ~1200°C; hold at 1200°C for 1–5 min; slow cool (~3°C/s) to 700–800°C; and finally, water quench. Figure 4 shows the temperature and pressure profile for integral LOCA demonstration test Zr4-26, performed on the in cell SATS.