PWR Blowdown Heat Transfer Separate-Effects Program— Thermal-Hydraulic Test Facility Experimental Data Report for Test 153

Reduced instrument responses are presented for Thermal-Hydraulic Test Facility (THTF) test 153, which is part of the ORNL Pressurized-Water Reactor (PWR) Blowdown Heat Transfer Separate-Effects Program. The objective of the program is to investigate the thermal-hydraulic phenomenon governing the energy transfer and transport processes that occur during a loss-of-coolant accident in a PWR system. Test 153 was conducted to obtain thermal-hydraulic and critical heat flux information in THTF bundle 1 operating at a low power and containing four unpowered rods.