Terminal Operations

Inspection and testing of secondary containment liners at terminal observed

On July 10, staffer Nelli Vanderburg visited the terminal to observe an inspection and repairs to drainage piping under the secondary containment liner. These pipes drain water from the secondary containment area after a rain. A manhole was also being installed. While the pipes were being repaired, Alyeska took the opportunity to inspect and test … Read more

Recent inspections for potential pipe corrosion at terminal show encouraging results

By TOM KUCKERTZ
Project Manager for Terminal Operations

Some of the council’s concerns regarding the unknown condition of the crude oil piping at the Valdez Marine Terminal have been answered by inspections performed this summer by Alyeska.

Causeway to Berth 4 at the Valdez Marine Terminal. Scaffolding has been installed and covered with plastic tarps to keep Alyeska's inspection crews and exposed piping dry during inspection. Photo by tom Kuckertz.
Causeway to Berth 4 at the Valdez Marine Terminal. Scaffolding has been installed and covered with plastic tarps to keep Alyeska’s inspection crews and exposed piping dry during inspection. Photo by tom Kuckertz.

In 2012, a routine inspection by Alyeska personnel of the 20-inch vertical riser pipes that feed crude oil to the loading arms on Berth 4 at the terminal revealed the existence of serious corrosion in some of the girth welds. Girth welds are welds that extend around the diameter of a pipe, typically used to join two sections of pipe.

Following this discovery in 2012, the remaining riser pipes on Berths 4 and 5 were subjected to additional inspections. More occurrences of vertical pipe girth weld corrosion were found and repaired. The cause of the corrosion in that particular region was attributed to water collecting under the pipe’s insulation in combination with a missing anti-corrosion paint coating in the vicinity of the girth weld.

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Reliability Centered Maintenance at the Valdez Marine Terminal

As part of the right-of-way renewal of the grant and lease for the Trans-Alaska Pipeline System (TAPS), the Reliability Centered Maintenance (RCM) paradigm was used as the basis for assuring a thirty-year remaining lifetime for TAPS. Without a strong maintenance program for all of its assets, there can be no guarantee that the life of … Read more

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