11
CSLD Troubleshooting
Actual CSLD Test Problems Analyzed
11-24
9606200101
3 -0.183
70.4
74.1
79.3
-0.07
412
7715
48.5
12.6
358
0.000
9606200241
3 -0.187
70.3
74.2
79.5
-0.05
382
7711
53.5
14.3
358
0.000
9606200429
0 -0.175
70.3
74.3
79.6
-0.04
354
7708
70.5
16.0
358
0.000
I60900
JUN 26, 1996 2:39 PM
TANK
PRODUCT LABEL
1
UNLEADED
0.000070
2
UNLEADED PLUS
0.000070
3
SUPER UNLEADED
0.000070
4
KEROSENE
0.000050
5
DIESEL
0.000045
6
0.000000
7
0.000000
8
0.000000
Analysis of Rate Table (IA5100)
The test results show that tank 2 is also close to failing. Examining the leak rates for both tanks shows negative
rates. the TMRT parameter is showing a negative temperature rate. This means that the fuel is contracting during
the test.
ANALYSIS OF THERMAL EXPANSION COEFFICIENT REPORT (I60900)
Checking the thermal temperature coefficient of expansion value for the tanks reveals that these values were
programmed incorrectly (1 extra zero was entered for each value e.g., 0.000070 instead of 0.00070). CSLD was
not able to correct for temperature change when computing the leak rate.
Solution
Correctly reprogram the coefficient of thermal expansion for each tank.
CSLD PROBLEM 6 - CSLD PERIODIC FAILURE TANK 1
Diagnostics
200
Station Header 1
Station Header 2
Station Header 3
Station Header 4
JUN 17, 1998 8:31 AM
TANK PRODUCT GALLONS INCHES WATER DEG F ULLAGE
1 UNLEADED SOUTH 5288 48.27 0.8 63.4 4528
2 UNLEADED NORTH 5332 48.59 0.0 63.8 4484
3 POWER PREMIUM 7168 62.35 0.0 66.4 2648
4 POWER PLUS 6150 54.60 0.0 65.2 3666
Wrong values.
When tank levels are close
tanks may be manifolded.
Identical names
suggest tanks
are manifolded.
