|
Issue Date: November 22,
1995
Revision Date: May 18, 2004
EBW,
Inc.
Auto-Stik
II, Auto-Stik Jr.
(Magnetostrictive Probe)
AUTOMATIC
TANK GAUGING METHOD
As of April 1, 2009, Franklin Fueling systems no longer manufactures this method.
|
Certification
|
Applies
only to EBW, INC. AutoStik II and AutoStik Jr. models
sold before March 1, 2004.
Leak
rate of 0.2 gph with PD = 99.9% and PFA = 0.1%.
Leak rate of 0.1 gph with PD = 98.3% and PFA = 1.7%.
|
|
Leak
Threshold
|
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.
|
|
Applicability
|
Gasoline,
diesel, aviation fuel, fuel oil #4.
Other liquids with known coefficients of expansion and
density may be tested after consultation with the manufacturer.
|
|
Tank
Capacity
|
Maximum
of 15,000 gallons.
Tank must be between 50 and 95% full.
|
|
Waiting
Time
|
Minimum
of 6 hours between delivery and testing.
Minimum of 6 hours between dispensing and testing for
leak of 0.2 gph.
Minimum of 2 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 0.1 gph.
|
|
Test
Period
|
Minimum
of 4 hours.
Test data are acquired and recorded by system's computer.
Leak rate is calculated from average of subsets of all
data collected.
There must be no dispensing or delivery during test.
|
|
Temperature
|
Average
for product is determined by a minimum of 5 thermistors.
|
|
Water
Sensor
|
Must
be used to detect water ingress.
Minimum detectable water level in the tank is 0.49 inch.
Minimum detectable water level change is 0.0052 inch.
|
|
Calibration
|
Thermistors
and probe must be checked and, if necessary, calibrated
in accordance with manufacturer's instructions.
|
|
Comments
|
Not
evaluated using manifolded tank systems. Therefore,
this certification is only applicable when there is
a probe used in each tank and the siphon is broken during
testing.
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 undetected.
EPA leak detection regulations require testing of the
portion of the tank system which routinely contains
product.
Auto Stik Jr. is used with up to 4 magnetostrictive
probes and can handle up to 8 input sensors.
Auto Stik II is used with up to 16 magnetostrictive
probes and can handle up to 64 input sensors.
California regulations
require at least one test per month after routine product
delivery or when the tank is filled to within 10% of
the highest operating level of previous month. If the
0.1 gph test is used as a tank tightness test there
must be no water present in the backfill (groundwater
must be below the bottom of the tank), the tank must
be equipped with an overfill protection device, and
the product level in the tank must be at the overfill
protection device set point. Local agency pre-approval
is required. To use the 0.1 gph test as a monthly option
see title 23 CCR Section 2643 (b)(2).
|
|
EBW,
Inc.
|
Evaluator: Ken Wilcox Associates
|
|
3760
Marsh Road
|
Tel: (816) 443-2494
|
|
Madison,
WI 53718
|
Date
of Evaluation: 08/20/93
|
|
Tel:
(800) 225-9787
|
|
|
E-mail:
info@franklinfueling.com
|
|
|
URL:
www.ebw.com
|
|
|
