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Pipeline Integrity Course
- An understanding of all aspects of dig-site direct assessment and their relationships to overall pipeline integrity issues
- A basic understanding of external corrosion - its causes and control/prevention techniques, including surveys and associated measurements
- A basic understanding of internal corrosion and microbial corrosion - the causes and conditions of occurrence
- The ability to assess the topography in a consistent manner regardless of region.
- The ability to categorize soil parameters in a consistent manner regardless of region and the ability to measure soil properties, i.e., grain size, resistivity, redox potential pH, aeration.
- The ability to carry out above ground surveys - corrosion, resistivity and coating - in the vicinity of a dig-site prior to the completion of the excavation
- An understanding of the significance of terrain, drainage and soils - sufficient to enable the process of site selection.
- The ability to tie above ground survey references to pipe references.
- Proficieny in:
- Measuring pipe potential with a ½-cell reference electrode
- Measuring resistivity, redox potential and pH
- The ability to perform the following above ground surveys:
- Pipe to soil potential
- Wenner 4-pin soil resistivity
- Coating surveys (DCVG, ACVG, electromagnetic or Pearson)
- Novaprobe
- The ablity to identify and confirm the correct location of in-line-inspection anomalies.
- Expertise in:
- locating disbonded coating
- taking underfilm pH measurements
- identifying relevant corrosion deposits;
- gathering electrolyte and soil samples where required
- correlating samples and measurements with actual anomalies (or with areas where there are none)
- Understanding and proficiency at utilizing DAP's Input, Correlating and Reporting software and the ability to lanch, complete and store all NDE forms within the software.
- An understanding of the relationships between time-dependent defects and the following essential parameters:
- pipe-to-soil potentials
- soil resistivity
- drainage
- soil redox potential
- soil and pipe surface pH
- corrosion deposits
- Proficieny at:
- determining if information is consistent
- making preliminary assessments of the root cause(s) of the anomalies found
- summarizing the reasons why the evidence indicates low (or high) integrity risk
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