Corrosion protection system for terminal’s crude oil pipes in good shape overall

Keith Boswell from National Pipeline Services observes cathodic protection system equipment at the Valdez Marine Terminal in 2019.

A recent study of operations and maintenance of Alyeska’s cathodic protection system found that the program was “very good;” however improvements are still needed.

National Pipeline Services, a consulting company that specializes in cathodic protections, conducted the study for the Council. They looked specifically at the systems that prevent corrosion in the metal piping that carries crude oil through the terminal to the large oil storage tanks.

The researchers based their report on a review of documents, procedures, testing, and results from previous inspections of those systems.

The final report summarized the systems currently in use at the terminal, as well as Alyeska’s methods for monitoring and testing the systems.

The researchers concluded that overall, it appears Alyeska has a “very good corrosion and cathodic protection program.” The procedures for operating and monitoring the system are adequate and within standard industry practices and Federal guided requirements.

The report also noted that certain improvements could further reduce the risk of a crude oil spill, such as ensuring data collection procedures are adequately implemented. Data used to ensure that the crude oil piping’s cathodic protection system is operating effectively does not appear to have been collected properly.

The researchers commended Alyeska on their use of remote monitoring systems, which continuously monitor and evaluate the systems. They added that Alyeska’s annual reporting for integrity management is exceptional and well documented.

Report:

Review of Cathodic Protection Systems at the Valdez Marine Terminal (1.9 MB)

Inoperable radar in Prince William Sound concerns Council

No plans for repair in near future

The U.S. Coast Guard’s Vessel Traffic Service, or VTS, which monitors the location of vessels in Prince William Sound, has been operating without radar in recent months.

Screenshot of AIS system
This screenshot is an example of how AIS maps show the location, speed, and direction of vessels, among other details. However, smaller objects or vessels do not appear in the system.

The Coast Guard monitors traffic in busy ports around the country through these VTS offices. The VTS in Prince William Sound usually operates with a combination of Automatic Identification System, or AIS; VHF radio; cameras; and radar.

AIS is a map-based online monitoring system required to be on board larger vessels. Equipment streams the vessel’s position, along with its name, course, speed, heading, and destination to the system. VHF radio is used for two-way communications with vessels.

These various systems are integrated together and the information is relayed to the Coast Guard’s Marine Safety Unit VTS in Valdez.

Radar is an integral part of the Coast Guard’s monitoring of vessels in Prince William Sound as many small vessels and hazards only appear on radar.

Based on a National Transportation Safety Board report on the Exxon Valdez oil spill disaster, lack of radar is considered a contributing factor to the spill.

U.S. Coast Guard Commander Patrick Drayer joined a Council meeting earlier this fall. In answer to questions from Council members, Commander Drayer noted that all three radar systems in Prince William Sound are obsolete.

Drayer explained that the original manufacturers are no longer in business and that original design drawings are not available. Attempts to fabricate new parts to repair the existing equipment have failed, as the parts did not fit or were not compatible. He also noted that this problem is affecting systems around the country.

Not all vessels use AIS

Many of the vessels in Prince William Sound do not have, and are not required to have, expensive AIS transmitters on board. Only vessels larger than 20 meters (approximately 65 feet) and some passenger vessels* must broadcast their location. Smaller vessels such as commercial fishing vessels, recreational boats, or kayaks may not carry AIS equipment. AIS can also miss smaller objects floating in the water, such as icebergs.

In an October 2020 letter to Senators Lisa Murkowski and Dan Sullivan, and Congressman Don Young, the Council asked for help to secure funds to replace the equipment.

“Based on discussions with the Coast Guard, all of these radar systems have been inoperable for at least ten months,” the letter stated. “Based on limited funding and resources it will take considerable time to repair and eventually replace this aging and inoperable equipment. In addition to the Council’s maritime safety concerns over the lack of Coast Guard radar capability in Prince William Sound, there are also homeland/national security implications of such radar inoperability.”

“The Council is concerned that adequate resources are not yet committed to these priorities,” the letter continued.

All three members of Alaska’s Congressional Delegation responded to the Council’s letter by writing to the Commandant of the Coast Guard requesting information regarding how this problem can be addressed. The Council plans to continue to monitor and advise on this important issue.

* Correction from print edition of The Observer: The original version of this article mistakenly left out that some passenger vessels smaller than 65 feet are also required to broadcast their location, depending on the capacity of the vessel.

How Alaskans redefined oil spill prevention and response

Council report documents the history and intent behind Alaska’s standard for spill response planning

Alaska, and Prince William Sound in particular, is known for its world-class oil spill prevention and response system. But it wasn’t always that way. In March of 1989, when the Exxon Valdez ran aground and spilled an estimated 11 million gallons of crude oil, responders were ill-prepared.

“Nothing arrived. There was nothing there.”

– Marilyn Heiman
Staff member for the Alaska House Resources Committee,
on the experience of waiting days for equipment to arrive.

Read more

Oil spill prevention and response services transition to new contractor

Link to more photos of new equipment
More photos of new equipment.

Prince William Sound was a hive of activity this summer. On July 1, Alyeska’s marine services contractor transitioned from Crowley Maritime Corporation to Edison Chouest Offshore.

This transition means all of the escort tugs and much of the spill prevention and response equipment in Prince William Sound are brand new, or new to the Sound.

Demonstrations of the new equipment

The Alaska Department of Environmental Conservation required that each vessel and crew member demonstrate their capabilities before beginning service. Each tug, as well as each tug’s captain, had to perform a set of maneuvers which differed according to the vessel and its purpose.

Read more

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