Experiment data report for LOFT nonnuclear Test L1-5 (isothermal test with Core 1 installed)

Test data are presented for Test L1-5, which was the fifth of five isothermal nonnuclear tests conducted by the Loss-of-Fluid Test (LOFT) Program. Test L1-5 was the first experiment conducted in LOFT with a nuclear core installed. The nuclear core was held in a shutdown condition. For Test L1-5 the LOFT facility was configured to simulate a loss-of-coolant accident in a large pressurized water reactor resulting from a 200% double-ended offset shear break in a cold leg of the primary coolant system. The initial conditions in the primary coolant system intact loop were: temperature 555 K, pressure 15.55 MPa (absolute), and intact loop flow 176.1 kg/s. During system depressurization into a simulated containment, emergency core cooling water was injected into the primary coolant system cold leg to provide data on the effects of emergency core cooling on system thermal-hydraulic response