Issue Date:  March 3, 2022

Think Tank Petroleum Service, LLC 

Think Tank Product Line Volumetric Tightness Tester
(for Rigid and Flexible Pipelines)



Leak rate of 0.1 gph with PD = 99.9802% and PFA = 0.0198%

Leak Threshold

0.08 gph. 
A pipeline system should not be declared tight if the test result indicates a loss that equals or exceeds this threshold.


Gasoline, diesel, aviation fuel, fuel oil #4, fuel oil #6, solvents, waste oil, biodiesel blends and all ethanol blended gasolines.


Systems tests rigid and flexible piping systems.
Tests are conducted at 150% maximum operation pressure for fuel types and product line configurations.
The safe maximum operating pressure for this method is 325 psi.

Pipeline Capacity

For rigid piping systems a maximum of 165.08 gallons with a bulk modulus of 30,843 psi for combination piping systems.

For Flexible piping systems a maximum of 109.84 gallons with a bulk modulus of 13,858 psi for combination piping systems.

Waiting Time

None between delivery and testing for rigid or flexible piping systems.

None between dispensing and testing for all piping systems.

Test Period

Under ideal conditions, test times can be as little as 30 minutes on a tight line depending on temperature conditions at the site. For a line where a leak is present, the minimum test time is 45 minutes under ideal conditions. Data is collected every 15 minutes. Three consecutive consistent readings are required for a valid test. Test data is acquired and recorded manually. Manual calculations are performed by the operator on site.


Requires annual tester certification for operation of this equipment by the manufacturer.


Think Tank Petroleum Service, LLC

Evaluator:  Ken Wilcox Associates

P.O. Box 1729

Tel:  (816) 443-2494

Travelers Rest, SC 29690

Dates of Evaluation: 03/06/2021

Tel: 864-370-0637


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