Actual measurements are typically more accurate and result in calculations that are more representative of the actual asset. Nominal measurements may not be as accurate, but provide an efficient mechanism for recording initial measurement data.
Any nominal measurement value can be used in the creation of a nominal measurement. Nominal measurements are used only for the base measurement (i.e., the first measurement).
- Measurement data will be populated automatically for the initial Thickness Measurement linked to TMLs configured for nominal base measurements.
- Measurement data must be entered manually for Thickness Measurements that are linked to TMLs that are not configured for nominal base measurements.
Thickness Monitoring will use all active thickness measurements for performing TML Corrosion Analysis calculations. Nominal measurements will become inactive measurement automatically after two subsequent actual measurements have been recorded. In other words, if the Measurement Taken Date of any two actual measurements is after the Measurement Taken Date of a nominal measurement, the nominal measurement will become an inactive measurement.