Method for measuring cement elements, such as piping, and measurement system there for

The invention relates to a method for measuring cement elements, such as cement piping, and measuring system therefor. The method of the invention comprises the steps of:
— providing a measurement system configured to move inside or along the element;
— performing ultrasonic measurements at a number of measurement locations along a measurement distance along the length of the element;
— measuring the time-of-flight at the measurement locations along the measurement distance; and
— analysing the measured time-of-flights and calculating a deterioration value at the measurement locations along the measurement distance With an analysing module and determining a deterioration ratio between the highest and lowest deterioration values along the measurement distance.