Process for checking the efficiency of an electric power station component

A process for the nondestructive testing of the functioning of at least one electrical power station component being wetted with a test fluid simulating a power station coolant released in an electrical power station accident, which comprises:

• wetting a surface of a component with a highly wetting test fluid, the test fluid having a surface tension and a conductivity corresponding to a surface tension and a conductivity of a power station coolant released from an electrical power plant during an accident;
• measuring insulation resistance at the wetted component, the insulation resistance representing a value for the functioning of the component;
• determining a value that the insulation resistance would assume under conditions of an accident with an escape of coolant from at least one measured value of a variable determining the insulation resistance;
• and
• calculating the value of the insulation resistance as a product of another value of the insulation resistance determined under test conditions and a factor Q, and determining the factor Q from comparison experiments for the component to be investigated.