Scope
This guideline provides the meter proving schedule frequency per prover
type and metering application.
Frequency As indicated below
METER PROVING CALIBRATION FREQUENCY
Procedure Proving Requirements per Prover Type
| Metering Application | Proving Interval |
| In-Line Prover | once per month |
| In-Line Master Meter | every 6 months |
| Proving Facility at other Location | once per year |
| Master Meters at all locations | every 6 months |
Proving Requirements per Metering Application
| Metering Application | Proving Interval |
| Batch Pipeline or marine cargo | every batch |
| Single hydrocarbon pipeline | every month |
| Marine vessel fueling | every year |
| Truck loading, unloading | every 4 months |
| Aircraft refueling, defueling & dispensing | every 4 months* |
