Annual Calibration Program


In accordance with the provisions of par. 2 of article 25 of the Metering Regulation (Government Gazette B '4818 / 24.12.2019) the frequency of Regular Calibrations is determined by the Annual Calibration Program of the Operator, that concerns the annualy scheduled calibrations at the active Delivery Points.

For the year 2023, EDA THESS will proceed with scheduled calibrations of meters with Qmax  10 Nm3/h, that have been used for more than 10 years, according to the standard ISO 3951-1:2013 "Sampling procedures for inspection variables”, Part 1: Specification for single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristic and a single AQL".

On 30/09/2023, the merger of the Distribution Network Operations EDA THESS and EDA ATTICA was completed with their absorption by the Distribution Network Operator DEDA, which becomes the universal successor of all rights, obligations and in general all legal relations of the absorbed Operators.