Document Author: William Mott

2022 Tank Pressure/Vacuum Pallet Damage: Crude Oil Storage Tank Headspace Gas Assessment

In this report, contractor Bill Mott of Taku Engineering summarized the calculations and key assumptions (due to the limited available data) used in a previous report related to a 2022 incident. In that incident, vents on several of the terminal’s crude oil storage tanks were damaged due to excessive snow load and ice accumulation, and the previous report found that Alyeska’s mitigation response presented a significant occupational safety risk for the tank top snow removal crew.

Previous report: Crude Oil Storage Tank Vent Snow Damage

Download new report:

Review of Crude Oil Storage Tank 2 Out-of-Service Inspection Documents

In this report, Taku Engineering summarized their review of documents associated with the American Petroleum Institute (API) 653 Out-of-Service inspections of Crude Oil Storage Tank 2 at the Alyeska Pipeline Service Company (APSC) Valdez Marine Terminal (VMT). The intent was to identify opportunities for reducing the risks of a future leak associated with the VMT tanks. The report includes background on Tank 2, along with Taku’s findings and recommendations.

Crude Oil Storage Tank Vent Snow Damage

In March of 2022, snow accumulated on Alyeska Pipeline Service Company’s crude storage tanks at the Valdez Marine Terminal and damaged several of the tank pressure vacuum pallets (or vents). The vent damage caused a leak of crude oil vapor from inside the tanks. This report by Taku Engineering summarizes their independent investigation of the damage, the associated vapor release, Alyeska’s response, and the proposed repair methods.

Follow-up report, released in December 2024: 2022 Tank Pressure/Vacuum Pallet Damage: Crude Oil Storage Tank Headspace Gas Assessment

Download the report: 

Skip to content