Appendix 3: Reporting basis

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 the 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 phase. Refrigerant losses are determined on the basis of the quantities added to replenish systems. 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. In a number of cases, the number of lost days could have been reported incorrectly where also the day of the accident is counted as a lost day, which is not in line with our definition. Not all our sites have adequate procedures for the registration of environmental and safety incidents, violations of safety regulations and environmental complaints, which may cause underreporting.