UST Programs - LG 113

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.

Tanknology - NDE	Evaluator: Midwest Research Institute
8900 Shoal Creek Blvd., Building 200	Tel: (816) 753-7600
Austin, TX 78757	Date of Evaluation: 02/14/91
Tel: (800) 800-4633

Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the performance of the method or equipment.
Equipment should be installed and operated in accordance with all applicable laws and regulations.
For full details, please refer to our expanded "DISCLAIMER" page.