COMPLIANCE INFO - Laserfiche WebLink

Home Browse Search

Chapter 7: Inspection, Evaluation,and Testing_ and other methods.This section also covers the inspection of underground piping(Section 10.10) and new construction (Section 10.11). • Section 11 refers to ASME B31.3 in describing the procedures a piping engineer should follow to determine the thickness at which piping and valves and flanged fittings should be retired. • Section 12 addresses recordkeeping. • Appendix A of the recommended practice provides an external inspection checklist for process piping. 7.7.8 API Recommended Practice 1110 -Pressure Testing of Steel Pipelines for the Transportation of Gas, Petroleum Gas, Hazardous Liquids, Highly Volatile Liquids or Carbon Dioxide API Recommended Practice 1110–Pressure Testing of Steel Pipelines for the Transportation of Gas, Petroleum Gas, Hazardous Liquids, Highly Volatile Liquids or Carbon Dioxide (API RP 1110)164 provides guidance regarding the procedures, equipment, and verification of pressure test results, as well as guidance for meeting the requirements of Integrity Management set out in API Standard 1160 and ASME 1331.8S. Pressure testing uses a liquid test medium (typically water)to apply internal pressure to a segment of pipe above its normal or maximum operating pressure for a fixed period of time. The main sections of this standard are Pressure Test Planning, Pressure Test Implementation, and Pressure Test Records and Drawings. Planning for a pressure test involves safety considerations, written test procedures, pipeline operating considerations,selection of a test medium, equipment and materials,target test pressures and durations, and other related issues.There are three basic types of pressure tests based on the intended purpose: • Spike test— a short duration, high amplitude (pressure ratio) test; • Strength test— conducted to establish the operating pressure limit of a pipeline; and • Leak test— used to determine if a pipeline is leaking, and can be used in combination with the other test types For implementation of pressure tests, personnel should follow site-specific test procedures including appropriate test pressures and the duration of the pressure test. Other operational aspects of pressure test implementation address the proper qualifications of personnel, pressurization,the test period, searching for leaks, and disposal of the test medium. Lastly, adequate test records and drawings should be kept for the useful 164 API Recommended Practice 1110,"Pressure Testing of Liquid Petroleum Pipelines,"5th edition,American Petroleum Institute, June 2007. SPCC GUIDANCE FOR REGIONAL INSPECTORS 7-72 December 16, 2013