Artikel 22 Protocol bij het Verdrag van 1979 betreffende grensoverschrijdende luchtverontreiniging over lange afstand inzake de verdergaande vermindering van zwavelemissies

22 To avoid discrepancies and inconsistencies, key issues and parameters, including the following, must be well defined: a) Definition of standards expressed as ppmv, mg/Nm 3, g/GJ, kg/h or kg/tonne of product. Most of these units need to be calculated and need specification in terms of gas temperature, humidity, pressure, oxygen content or heat input value; b) Definition of the period over which standards are to be averaged, expressed as hours, months or a year; c) Definition of failure times and corresponding emergency regulations regarding bypass of monitoring systems or shut-down of the installation; d) Definition of methods for back-filling of data missed or lost as a result of equipment failure; e) Definition of the parameter set to be measured. Depending on the type of industrial process, the necessary information may differ. This also involves the location of the measurement point within the system.