|Pipeline Integrity Inspection Program|
CLIENT: Keyera Energy
Keyera Energy owns and operates over 4,500 km of pipeline throughout Alberta and British Columbia. It is their belief that proper pipeline management requires regular inspections of their pipelines, including pipeline watercourse crossings. As such, NHC was contracted to provide and execute a pipeline watercourse crossing inspections program.
NHC works with individual system coordinators as well as the corporate office to coordinate pipeline crossing inspections. Watercourse crossings are identified by an NHC desktop review. We conduct pipeline crossing inspections, which involve a pipeline profile survey to determine the minimum depth of cover as well as identification of hydrotechnical risks at the crossings. We evaluate these risks and assign a risk rating and inspection frequency based on this risk. An annual report for each system that had inspections completed is provided to the system coordinator and the corporate office. Information includes the minimum cover depth, hydrotechnical risks present, surveyed pipeline profile, basic hydraulic characteristics of the watercourse, site photos, risk rating, and inspection frequency. As required, NHC also completes more detailed surveys of the high risk pipeline crossings in support of remediation designs. NHC has developed a user friendly web-based database, which collects and displays all of the inspection information, risk ratings, and other information for each watercourse. The database not only allows users to view reports, but also to view the inspections in a geospatial display.