Issue Date: April 6, 2010
(originally evaluated under EBW, Inc.)
AUTOMATIC TANK GAUGING METHOD
As of April 1, 2009, Franklin Fueling systems no longer
manufactures this method.
||Leak rate of 0.2
gph with PD = 99.96% and PFA = 0.44%.
Leak rate of 0.1 gph with PD = 95.34% and PFA = 4.66%.
||0.1 gph for leak
rate of 0.2 gph.
0.05 gph for leak rate of 0.1 gph.
A tank system should not be declared tight if the test result indicates a
loss or gain that equals or exceeds this threshold.
aviation fuel, fuel oil #4.
||Maximum of 15,000
Tank must be between 50 and 95% full.
||Minimum of 2
hours between delivery and testing for leak of 0.2 gph.
Minimum of 8
hours between delivery and testing for leak of 0.1 gph.
Minimum of 2 hours between dispensing and testing for leak of 0.2 gph.
Minimum of 8 hours between dispensing and testing for leak of 0.1 gph.
There must be no delivery during waiting time for leak of 0.2 gph.
There must be no dispensing or delivery during waiting time for leak of
||Minimum of 4
Test data are acquired and recorded by system's computer.
Leak rate is calculated from average of subsets of all data
There must be no dispensing or delivery during test.
product is determined by a single thermistor RTD.
||Must be used to
detect water ingress.
Minimum detectable water level in the tank is 0.91 inch.
Minimum detectable water level change is 0.025 inch.
probe must be checked and, if necessary, calibrated in accordance with
using manifolded tank systems. Therefore, this certification is only
applicable when there is a probe used in each tank and the siphon is broken
Tests only portion of tank containing product.
As product level is lowered, leak rate in a leaking tank decreases (due to
lower head pressure).
Consistent testing at low levels could allow a leak to remain
EPA leak detection regulations require testing of the portion of the tank
system which routinely contains product.
Ken Wilcox Associates
3760 Marsh Road
Madison, WI 53718
Tel: (800) 225-9787