X-control charts as a means of static quality control of rope testing for export facilities in mining

Abstract

Accredited Laboratory for Materials Testing within the Mining and Metallurgy Institute (MMI) Bor has a primary role in testing steel ropes for export facilities in mining. Reliable and valid test results require the possession of correct and high-quality equipment, as well as the competence of the operators for this type of test. Testing of the correctness and reliability of the equipment is carried out using our own reference material of known characteristics, confirmed in other laboratories. The paper presents the results of testing samples of own reference material on a simple twisting test device. The results obtained using the X-control chart showed that the method of twisting the samples is under control, i.e., the acceptability of the results obtained using the tested method was confirmed, which means that the correctness of the device is at the required level.