Test Series D experimental results for SIMMER code validation of WCLL BB in-box LOCA in LIFUS5/Mod3 facility

Conceptual design of the main Ancillary Systems of the ITER Water Cooled Lithium Lead Test Blanket System

“…Since the Pb-Li loop is directly connected to both the Water Cooling System (WCS) by the WCLL-TBM and the Tritium Extraction System (TES) by the Tritium Extraction Unit (TEU), several design requirements are foreseen for this ancillary system, ensuring the correct operation of the whole WCLL-TBS and its safety systems during both nominal and accidental scenarios. In particular, the WCS/Pb-Li loop interface plays a pivotal role in the design due to the likelihood of an in-TBM LOCA, followed by the interaction between Pb-Li and water leading to an exergonic chemical reaction [15]. Moreover, due to the considerable production of activated elements (both Pb-Li impurities and corrosion products) and tritium inside the Pb-Li alloy during its flow through the WCLL-TBM and the rest of the loop, all the main components of the circuit have to be classified as nuclear pressurized equipment.…”

Analysis of Test D1.1 of the LIFUS5/Mod3 facility for In-box LOCA in WCLL-BB

“…The initial test conditions were achieved accordingly with the design specifications, a detailed explanation of experimental procedure, the test matrix for Series D and the main parameters characterizing the tests are reported in [10]. The water injection is started by opening the valve VP-SBL-06 and ended by its closure, which was automatically activated after 1 s, therefore, the injection into S1B lasted 1.1 s (from the injector cap rupture to VP-SBL-06 fully closed).…”

“…These campaigns will also contribute to providing a useful database for the future Verification and Validation of a new System Thermal Hydraulic 2D (STH/2D) coupling calculation tool [8], [9] under development at the University of Pisa. The present work aims to interpret the results of the first test of the Series D experimental campaign, so called Test D1.1, which was performed on LIFUS5/Mod3 facility [10]. A standard validation method, including quantitative and qualitative analyses, has been considered to elaborate the numerical data against the experimental results, based on a three-step evaluation process [11], previously applied for Separate Effect Test (SET) code validation purpose ref.…”

Post-test analysis of Series D experiments in LIFUS5/Mod3 facility for SIMMER code validation of WCLL-BB In-box LOCA

“…The main objectives of the present work can be explained as the investigation of the relevant transient parameters with respect to both experimental and numerical results. Additionally, a qualitative results comparison is made based on the outcomes of tests D1.1, 1.2 and 1.5, which were performed with the same amount of water on LIFUS5/Mod3 facility [9].…”