DAQ-2025-002100

Big West Oil LLC
Upper Prediction Limit (UPL) Calculation
FCC Heater H-101
NOx Data
[lb/MMBtu
]
(xi-x̄)2
Test 1 0.154 4.00E-06
Test 2 0.156 0.00E+00
Test 3 0.154 4.00E-06
Test 4 0.157 1.00E-06
Test 5 0.159 9.00E-06
Test 6 0.156 0.00E+00
Step Value
1) Test average (x̄)0.16
2) Size of Dataset (n)6
3) Number of values used (m)6
4) t-score (99 percent)3.365
5) Variance (s2)3.00E-06
6) UPL 0.16
Big West Oil LLC
Upper Prediction Limit (UPL) Calculation
Reformer Heater H-621, H-622, H-624 (Combined Stack)
NOx Data
[lb/MMBtu
]
(xi-x̄ )
2
Test 1 0.0606 9.40E-06
Test 2 0.0654 3.00E-06
Test 3 0.0650 1.78E-06
Step Value
1) Test average (x̄)0.06
2) Size of Dataset (n)3
3) Number of values used (m)3
4) t-score (99 percent)6.965
5) Variance (s2)7.09E-06
6) UPL 0.08