oh man....
Called a friend he said what he does is
Eg,
A) Difference( between Bowser Uplift - Calculated uplift ) divided by Bowser uplift x 100?
Eg, Bowser uplift is 10, 000 kgs. Gauges showing total before refuel- 5000. After refuel total shows 15 400kgs. So Calculated uplift= 10400kgs.
Difference= 400 kgs between Bowser uplift ( 10000kgs) and Calculated uplift(15400kgs -5000kgs= 10400 kgs ) using the fuel gauges.
So discrepancy--> 400kgs/10000kgs x100= 4%?
And i can't remember where i read now, the moethod used was
B) Eg, Bowser uplift= 10000kgs. Gauges uplift ( as above ) 10400kgs. Difference= 400kgs.
So discrepancy --> 400kgs divided by total fuel on board which is 10000kgs +5000kgs x100.= 400/15000 x100=2.7%
So, which is the correct way? Thanks. i know it seems simple...but its between a dripstick check ( 4%)--> long delays or a non event( 2.7%). Company tolerance is 3%. So it would be nice if i know the absolute correct method.
Thank you once again.