|
VENDOR
|
EQUIPMENT
NAME
|
LEAK
RATE/THRESHOLD/
MAX
ULLAGE CAPACITY
|
| Leighton O’Brien
|
Leighton O’Brien Dry Test
(Pressure Decay Test) |
0.1 gph/ A tank system should not be declared tight when the pressure decay results in a failure indication or is inconclusive. /20,000 gallons (or larger via extrapolation) |
| |
Leighton O’Brien 0.025 gph Dry Test
(Pressure Decay Test) |
0.025 gph / Tank ullage should not be declared tight when the pressure decay results in an indication of a 0.025 gph or greater loss. / 30,000 gallons |
|
MassTech International, Ltd. |
MassTech Analog
Acoustic Vacuum Method
(Vacuum Test) |
0.1 gph/ Tank ullage should not be
declared tight when the acoustic signal characteristic of a leak is
detected./20,000 gallons |
| |
MassTech
Remote Spectral Analysis Method
(Vacuum Test)
|
0.1 gph/ Tank
ullage should not be declared tight when the digital recording of
the noise spectrum of tank under vacuum has a detectable difference
from the digital recording of the noise spectrum of tank at zero
pressure./20,000 gallons |
| |
MassTech 002 Ullage
Test System
(Pressure or Vacuum
Test) |
0.1 gph/Tank ullage should not be declared tight when
a predetermined threshold is exceeded. This threshold may be
modified by the results of the static test./30,000 gallons |
|
ProTank,
Inc.
|
UTA-5000
Ullage Tester
(Vacuum or Pressure Test)
|
0.1 gph/
A tank system should not be declared tight when the acoustic
signal detected is different from the baseline. Baseline is the
acoustic signal before tank is pressurized or evacuated./16,500
gallons
|
|
|
UTF-5000
Ullage Tester
(Pressure Test)
|
0.1 gph/
A tank system should not be declared tight when the make-up gas
flow rate into ullage equals or exceeds 0.275 cubic
feet/hour./7,500 gallons
|
|
|
UTFP-5000
Ullage Tester (Pressure Test)
|
0.1 gph/
A tank system should not be declared tight when the pressure decay
trend equals or exceeds ± 0.016 psi/hr./10,260 gallons
|
|
Purpora Engineering, Inc.
|
Alert 8200 Series
Sonde Ullage |
0.1
gph/A
tank system should not be declared tight if the ratio of the
ultrasonic signal (when the tank is under pressure or vacuum) to
the background signal (prior to pressurization or evacuation)
equals or exceeds 1.5 for either 12 kHz or 25 kHz frequency
band./30,000 gallons |
| Purpora Engineering, Inc. (originally listed by Alert Technologies Inc.) |
Alert
Ullage System Model 1050
(Pressure and Vacuum Test)
|
0.1 gph/
A tank system should not be declared tight if the ratio of the
ultrasonic signal (when the tank is under pressure or vacuum) to
the background signal (prior to pressurization or evacuation)
equals or exceeds 1.5 for either 12 kHz or 25 kHz frequency
band./6,000 gallons
|
| Purpora Engineering, Inc. (originally listed by Alert Technologies Inc.) |
Alert
Ullage System Model 1050 X
(Vacuum
Test)
|
0.1 gph/
A tank system should not be declared tight if the ratio of the
ultrasonic signal (when the tank is under vacuum) to the
background signal (prior to evacuation) equals or exceeds 1.5 for
either 12 kHz or 25 kHz frequency band./24,000 gallons
|
|
Tanknology
|
UST
Ullage Test, Version U2 (Pressure
Test)
|
0.1 gph/
A tank system should not be declared tight when the pressure decay
trend equals or exceeds ± 0.016 psi/hr./10,260 gallons
|
|
|
UTS-4T
Ullage Test
(Pressure
Test)
|
0.1 gph/
A tank system should not be declared tight when the make-up gas
flow rate into ullage equals or exceeds 0.275 cubic
feet/hour./7,500 gallons
|
|
|
U3
Ullage Test
(Vacuum
or Pressure Test)
|
0.1 gph/
A tank system should not be declared tight when the acoustic
signal detected is different from the baseline.
Baseline is the acoustic signal before tank is pressurized
or evacuated./16,500 gallons
|
|
Triangle
Manufacturing, Inc.
(originally Listed as Triangle Environmental, Inc.) |
TEI
Ullage Test, Version 1.0 (Vacuum
Test)
|
0.1 gph/
A tank system should not be declared tight when an increase in the
acoustic noise level (above background) of the tank under vacuum
is detected due to air or water ingress./15,000 gallons
|
|
USTest,
Inc. (previously listed as Sound Products Manufacturing, Inc.) |
UST
2000/U
(Pressure and Vacuum Test)
|
0.1 gph/
A tank system should not be declared tight when there is a
substantial increase in the acoustic noise signal (when the tank
is under pressure or vacuum) above the background signal (prior to
pressurization or evacuation) in the frequency interval of 10 kHz
to 20 kHz./7,550 gallons (pressure test), 5,250 gallons (vacuum
test).
|
