This guideline establishes the requirement for proving meters that are returned to service after maintenance.
HOW PROVING METERS RETURNED TO SERVICE
Frequency As required.
Procedure When any maintenance or inspection is performed on a meter, the meter shall be proved immediately upon being returned to service.
1. Prove the meter prior to removing from service. Note the k-factor.
2. Immediately after returning the meter to service, prove the meter.
Note the new k-factor.
3. Determine the barrels passing through the meter between the
times the meter was returned to service and when proved.
4. Take the barrels determined in Step 3 and multiply by the pulses per barrel (k-factor) in Step Prove the meter prior to removing from service. Note the k-factor. to obtain pulses.
5. Divide results of Step 4 by the pulses per barrel (new k-factor) in Step 2 to obtain barrels.
6. The adjustment to be reported is Step 5 minus Step 3.
7. Ensure the adjustment is properly documented and reported to the OCC and the Oil Movements Measurements and Scheduling Team.