Measuring instruments and calibration

An optimal management of the measuring instruments, in addition to ensuring compliance with legal requirements and standards and the needs of the customer, helps to provide greater confidence in the
reliability of the measurement system of the data provided. The instruments we used for the measurement of characteristics having a direct influence on the object or on the provision of the service to the customer, are subjected to periodic calibration, or before use, in order to maintain a metrological traceability chain with instruments of the highest known degree of precision.

In order to keep the measuring and monitoring devices under control, we have adopted a specific procedure included in its Integrated Manual of the HSEQ Management System compliant with ISO 9001: 2015, ISO 14001: 2015 and ISO 45001: 2018. In accordance with this procedure, an Instrument List has been prepared and an Instrument Sheet for each of the devices showing the characteristics of the instrument, the measurement range and uncertainty, the methods and frequency of maintenance, control and calibration.

When recourse is made to the temporary procurement of measuring instruments from external suppliers or when activities to be carried out by suppliers involving the use of measuring instruments are envisaged, SHELTER ensures (in accordance with the HSEQ Management System) that these instruments are in calibration status against instruments or comparative references certified on the basis of nationally or internationally recognized standards.