Appendix 2: Reporting basis continued
Accuracy
The accuracy of the data depends on the method of measurement, the calculation procedure and whether estimates have been used. For some parameters, the sampling method and frequency, as for COD, can also affect accuracy. The quantity of refrigerant is difficult to establish because it is used in dynamic systems in which it can occur in both the liquid and gaseous phases. Refrigerant losses are determined on the basis of the quantities added to replenish systems. At a number of production units, waste is removed from the site in containers of a given volume, and inaccuracies can arise in translating volume to weight. In the absence of local legislation in some countries outside Europe, the definition of hazardous waste is not always clear. In some cases, hazardous waste is safely recycled and is no longer designated as hazardous. The scope and workforce size related to the accident frequency can give rise to inaccuracies in some locations due to the misinterpretation of overtime and number of temporary personnel.
