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