A descaling
system (100) for descaling a workpiece (1), preferably a hot-rolled stock, by applying a high-pressure fluid to the workpiece's surfaces is presented. The descaling
system (100) comprises a high-pressure pump (7), a scale
washer (9) equipped with nozzles (10), a fluid line
system (4, 5, 6), sensors (21, 22, 23, 24, 25, 26, 27, 28, 29, 30) for measuring several operating parameters as operating parameter measured values (Q1, Q2, T, n, a, Q3, P3, Q4, P4, P5), and a monitoring device (20) for acquiring and
processing the operating parameter measured values (Q1, Q2, T, n, a, Q3, P3, Q4, P4, P5).The monitoring device (20) is designed to determine, in real time during operation of the descaling system, at least one general and / or component-specific
operability status and / or wear status of the descaling system by means of combined evaluation of the recorded operating parameter measured values (Q1, Q2, T, n, a, Q3, P3, Q4, P4, P5) from at least two of the sensors (21, 22, 23, 24, 25, 26, 27, 28, 29, 30) for measuring different operating parameters, and to output the determined
operability status and / or wear status of the descaling system to a human-
machine interface (50, 51, 52, 53, 54) coupled to the monitoring device (20). Furthermore, a corresponding monitoring device and a monitoring method are presented.