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Issue Date: November 22, 1995
Revision Date: June 25, 2018
Purpora Engineering,
Inc.
(originally listed as Heath Consultants, Inc.)
Petro Tite
Line Tester
LINE TIGHTNESS TEST METHOD
| Certification |
Leak rate of 0.1
gph with PD = 99.99% and PFA = 0.34%. |
| 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.
Vendor claims this equipment can detect leaks at .01 gph, and trains
operators to declare leaks at .01 gph. |
| Applicability |
Gasoline, diesel,
aviation fuel, fuel oil #4. |
| Specification |
System tests
fiberglass and steel pipelines.
Tests are conducted at 150% operating pressure.
Mechanical line leak detectors shall be removed or manually isolated from
the pipeline for duration
of test, or check valve in pump must be manually closed if testing is to
be conducted with mechanical line leak detector in place. |
| Pipeline
Capacity |
Maximum of 129
gallons. |
| Waiting
Time |
None between
delivery and testing.
None between dispensing and testing. |
| Test
Period |
Minimum of 30
minute (two 15 minute readings) test when the detected leak does not exceed
0.005 gph, or minimum of 1 hour (four 15 minute readings) test when the
detected leak is more than 0.005 gph for the first 30 minutes. When testing multiple lines and leak rates do not exceed 0.005 gph, the following test times are utilized:
Number of Lines |
Test Times |
Number of Consecutive Readings |
Interval |
1 |
30 Minutes |
Six (6) |
5 Minutes |
2 |
30 Minutes |
Three (3) |
10 Minutes |
3 |
30 Minutes |
Two (2) |
15 Minutes |
Test data are acquired and recorded manually. |
| Calibration |
System must be
checked annually and, if necessary, calibrated in accordance with
manufacturer's instructions. |
| Comments |
The manufacturer does not
support test results if the technician does not hold a current Petro-Tite
certification when the test is performed. Re-certification is required
by the manufacturer every 2 years. Third party evaluation was not conducted utilizing a test manifold. |
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Purpora Engineering Inc.
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Evaluator:
Ken Wilcox Associates
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658 North Progress Drive
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Tel:
(816) 443-2494
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Saukville, WI 53080
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Dates of
Evaluations: 03/11/91,
05/06/01
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Tel: (262) 536-4081
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E-mail:
info@purporaengineering.com |
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URL:
www.purporaengineering.com |
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