In-Line Inspection of Pipelines
|Publication Date:||10 March 2017|
This standard is applicable to carbon steel pipeline systems constructed of Grade B or greater material used to transport natural gas and hazardous liquids, including those containing anhydrous ammonia, carbon dioxide, water including brine, liquefied petroleum gases (LPG), and other services that are not detrimental to the function and stability of ILI tools.
This standard is applicable to free-swimming ILI tools, but is not applicable for tethered or remotely controlled inspection devices.
This standard provides recommendations to the pipeline operator based on successful, industry-proven practices in ILI. This standard is specific to the inspection of line pipe installed along a right-ofway, but the general process and approach may be applied to other pipeline facilities such as hydrocarbon distribution and gathering systems, water injection systems, station piping, and isolated crossings of railroads, highways, or waterways.
ANSI(1)/ASNT(2) ILI-PQ2 establishes minimum requirements for the qualification and certification of ILI personnel whose jobs require specific knowledge of the technical principles of ILI technologies, operations, regulatory requirements, and industry standards as applicable to pipeline systems.
API(3) 11633 provides requirements for qualification of ILI systems used in onshore and offshore gas and hazardous liquid pipelines. This includes, but is not limited to, tethered or free-flowing systems for detecting metal loss, cracks, mechanical damage, pipeline geometries, and pipeline location or mapping. This standard is an umbrella document covering all aspects of ILI systems, including procedures, personnel, equipment, and associated software. It is performance-based, but it does not define how to meet qualification requirements