Indigenous data acquisition and signal processing system for top shield thermal design validation

In Prototype Fast Breeder Reactor (PFBR), top shield consisting of roof slab, large rotatable plug, small rotatable plug and control plug. Maintaining the temperature and temperature difference across the top shield is important to limit the thermal bowing of the top shield. Thus thermal design of top shield is a complex process, which needs detailed theoretical and experimental investigation and verification. Towards this an experimental test facility, Integrated Top Shield Test Facility (ITSTF), has been conceived, constructed and commissioned. This technical note discuss about the objective of the facility and instrumentation provided for data acquisition and monitoring of the facility.