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Issue Date: November 22, 1995
Revision Date: November 6, 1997
Soiltest, Inc.
Soiltest
Ainlay Tank 'Tegrity' Tester, S-3
VOLUMETRIC TANK TIGHTNESS TEST
METHOD (OVERFILL)
| Certification |
Leak rate of 0.1
gph with PD = 99% and PFA = 1%. |
| Leak
Threshold |
0.05 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. |
| Tank
Capacity |
Maximum of 15,000
gallons.
Tank must be minimum 100% full. |
| Waiting
Time |
Minimum of 10
hours between delivery and testing.
Minimum of 2 hours between "topping off" and testing.
There must be no dispensing or delivery during waiting time. |
| Test
Period |
Minimum of 1
hour, 30 minutes.
Test data are acquired and recorded manually and by a strip chart
recorder.
Leak rate is calculated from last 1 hour, 30 minutes of test period
data.
There must be no dispensing or delivery during test. |
| Temperature |
Average for
product is determined by a minimum of 3 thermistors. |
| Groundwater |
Depth to
groundwater in tank excavation backfill must be determined.
If groundwater is above bottom of tank, product level must be adjusted to
provide net pressure of 2-4 psi at the bottom of tank during test. |
| Calibration |
Level sensors
must be calibrated before each test in accordance with manufacturer's
instructions.
Thermistors must be checked annually and, if necessary, calibrated in
accordance with manufacturer's instructions. |
| Comments |
Not evaluated
using manifolded tank systems. |
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Soiltest,
Inc.
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Evaluator:
Law Engineering Industrial Services
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Manufacturer’s Previously Listed Contact Information is No
Longer Valid.
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Tel:
(800) 672-6601
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Date of
Evaluation: 11/28/90
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