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Issue Date: November 22, 1995
Revision Date: November 14, 1997
Tanknology -
NDE
PTK-88
LINE TIGHTNESS TEST METHOD
| Certification |
Leak rate of 0.1
gph with PD = 99.8% and PFA = 1.3%. |
| Leak
Threshold |
0.05 gph.
A pipeline system should not be declared tight if the test result
indicates a loss that equals or exceeds this threshold. |
| Applicability |
Gasoline, diesel,
aviation fuel, fuel oil #4.
Other liquids may be tested after consultation with the manufacturer. |
| Specification |
System tests
fiberglass and steel pipelines.
Tests are conducted at 150% operating pressure.
Mechanical line leak detector must be removed from pipeline for duration
of test. |
| Pipeline
Capacity |
Maximum of 40
gallons. |
| Waiting
Time |
None between
delivery and testing.
Minimum of 1 hour between dispensing and testing. |
| Test
Period |
Minimum of 10
minutes.
Repeat 10 minute cycles are necessary if data does not meet the
manufacturer's criteria.
Test data are acquired and recorded manually.
Manual calculations are performed by the operator on site. |
| Calibration |
Sensors must be
calibrated before each test in accordance with manufacturer's
instructions. |
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Tanknology
- NDE
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Evaluator:
Midwest Research Institute
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8501 North MoPac
Expressway, Suite 400
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Tel:
(816) 753-7600
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Austin, TX 78759
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Date of
Evaluation: 02/14/91
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Tel: (800) 964-0010
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