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  METHOD INDEX

Continuous Pressurized Piping
Bulk UST
AST Leak Detection
Electronic LLD
Mechanical LLD
Large Pipeline
Static ATG
Continual RS
Qualitative SIR
Quantitative SIR
Interstice-Liquid Filled
Line Interstice-P/V
Tank Interstice-P/V
Interstitial Sensor
Liquid Sensor
Vapor Sensor
NVTTT-Tracer
NVTTT-Ullage
NVTTT-Vacuum
VTTT-Overfill
VTTT-Underfill
Interstitial TTT
Small Pipeline TT
Sec & Spill Cont

Revision Date: February 6, 2015
 

Non-Volumetric Tank Tightness Test Method
(Ullage)

Click on the vendors specific EQUIPMENT NAME to go to that Listing.


  VENDOR

  EQUIPMENT NAME

  LEAK RATE/THRESHOLD/
MAX ULLAGE CAPACITY

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).

 

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