API TR 1179-2019 pdf free download
API TR 1179-2019 pdf free download.Hydrostatic Testing as an Integrity Management Tool.
1 Scope This technical report provides guidelines related to hydrostatic testing as a tool for integrity management in gas and liquids pipelines. It specifcally focuses on program design and key parameters for consideration in hydro- static test programs, as well as potential detrimental effects of hydrostatic testing. Several case studies (see Annex A) supplement the guidelines provided. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated referenc- es, only the edition cited applies. For undated references, the latest edition of the referenced document applies (including any addenda/errata). API 579-1, Fitness-For-Service API Specifcation 5L, Specifcation for Line Pipe API Specifcation 5LX, High-Test Line Pipe 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 1160, Managing System Integrity for Hazardous Liquids Pipelines ASME B31.4, Pipeline Transportation Systems for Liquids and Slurries ASME B31.8, Gas Transmission and Distribution Piping Systems ASME B31.8S, Managing System Integrity of Gas Pipelines ASME STP-PT-011, Integrity Management of Stress Corrosion Cracking in Gas Pipeline High Consequence Areas AGA NG-18 Report 194, Hydrotest Strategies for Gas Transmission Pipelines Based on Ductile-Flaw-Growth Considerations Michael Baker Jr.., Inc. Spike Hydrostatic Test Evaluation. July 2004. OPS TT06 U.S. DOT Title 49, CFR Part 192, Subpart J—Test Requirements U.S. DOT Title 49, CFR Part 195, Subpart E—Pressure Testing Leis, B.N., et al. Final Summary Report and Recommendations for the Comprehensive Study to Understand Longitudinal ERW Seam Failures-Phase One. Washington DC: s.n., 2013. G0060804. McAllister, E.W. Pipeline Rules of Thumb Handbook: A Manual of Quick Accurate Solutions to Everyday Pipeline Engineering Problems. Gulf Professional Publishing: 2013
3? Terms,? Defnitions,? Acronyms,? and? Abbreviations 3.1? Terms? and? Defnitions 3.1.1 double stroke The point where twice as many pump strokes are required to achieve the defned incremental increase in pres- sure as compared with when the pipe is in the elastic range, which can be shown to occur when the relationship between strokes and pressure increase is no longer linear and the slope of the line has been halved. 3.1.2 high-pressure test A test undertaken at pressures potentially greater than necessary for qualifying test minimum requirements to address or assess for an identifed or targeted pipeline threat. Similar in use to a “spike” test, an alternative when spike testing may not be advised or warranted. 3.1.3 hydrostatic test failure A test failure that occurs when the pipeline, either due to leak or rupture of the line pipe, cannot either reach or sustain (if required) the target pressure of the hydrostatic test. 3.1.4 in-line inspection ILI The inspection of a pipeline using an internal inspection tool, commonly referred to as a “smart pig.” 3.1.5 leak test A test that can be performed with hydrostatic pressure (e.g. during a qualifying test) or in-service methods such as fame ionization (e.g. gas), in-line inspection (e.g. acoustic) means, or any other method suitable for discovery of leaks associated with the pipeline. 3.1.6 legacy pipe Pipe manufactured with now-obsolete manufacturing methods, including low-frequency or DC ERW process, single submerged arc-weld, electric fash weld, wrought iron, lap welded, hammer welded, butt welded, and pipe made from Bessemer steel, or any pipe with a longitudinal joint factor less than 1.0 as defned in 49 CFR §192.113 5 . 3.1.7 Maximum Allowable Operating Pressure MAOP Used when referencing natural or other gas pipelines operated under 49 CFR §192. NOTE For the purposes of discussion of pressure test parameters, within this report this term is used interchangeably with MOP.
