초록 ▼

A test tool for a reactor vessel level instrumentation system which simulates and verifies the values of input signals applied to the instrumentation system. The test tool includes potentiometers for simulating the signals produced by resistance temperature detectors, switches for simulating pump st

A test tool for a reactor vessel level instrumentation system which simulates and verifies the values of input signals applied to the instrumentation system. The test tool includes potentiometers for simulating the signals produced by resistance temperature detectors, switches for simulating pump status and isolator overrange limit signals, a power supply, resistors and potentiometers for simulating temperature hot sensors and a pressure wide range sensor, and potentiometers and resistors for simulating differential pressure cell signals. The invention also includes a switchable meter for verifying the values of the various input signals simulated.

대표청구항 ▼

A test tool for a pressurized water nuclear reactor vessel fluid level instrumentation system, the instrumentation system having a temperature compensation subsystem receiving resistance temperature detector signals, a pump status subsystem receiving pump status signals, a hydraulic isolator subsyst

A test tool for a pressurized water nuclear reactor vessel fluid level instrumentation system, the instrumentation system having a temperature compensation subsystem receiving resistance temperature detector signals, a pump status subsystem receiving pump status signals, a hydraulic isolator subsystem receiving isolator limit signals, a temperature hot subsystem receiving reactor coolant temperature signals, a differential pressure cell subsystem receiving differential pressure cell signals, and a pressure wide range subsystem receiving wide range pressure signals, said test tool comprising: first potentiometers, connectable to the temperature compensation subsystem, for providing substitute resistance temperature detector signals and used for testing the temperature compensation subsystem; pump status switches, connectable to the pump status subsystem, for providing substitute pump status signals and used for testing the pump status subsystem; isolator switches, connectable to the hydraulic isolator subsystem, for providing substitute isolator limit signals and used for testing the hydraulic isolator subsystem; a power supply; second potentiometers, connected to said power supply and connectable to the temperature hot subsystem, for providing substitute reactor coolant temperature signals and used for testing the temperature hot subsystem; third potentiometers, connectable to the differential pressure cell subsystem, providing substitute differential pressure cell signals and used for testing the differential pressure cell subsystem; and a wide range potentiometer, connected to the power supply and connectable to the pressure wide range subsystem, for providing a substitute wide range pressure signal and used for testing the pressure wide range subsystem.