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AutomationCase Studies & Field Reports

Field Reports

Automating production at marine algae omega-3 oil facility

When Veramaris upgraded its systems and processes, it needed to maintain output while meeting quality, production standards

By Sharon Spielman
Veramaris facility outside
Veramaris labratory

Although certain procedures and processes are increasingly standardized and automated, numerous key steps in and around the automation are still dependent on operator input or manual intervention.

Veramaris facility outside
Veramaris labratory
June 14, 2021

When two international companies created the world’s first high-volume facility manufacturing omega-3 oil from natural marine algae, the $200 million joint venture had to minimize any impact at the plant, which was already producing another product. This had to be accomplished while adding new automation capabilities and upgrading a range of systems and equipment.

In Blair, Neb., the joint venture—called Veramaris, between German-based Evonik and Royal DSM of the Netherlands—sustainably produces omega-3 fatty acids for farm-raised salmon without using fish oil from wild-caught fish. They combine a special strain of algae rich in EPA and DHA omega-3. These two fatty acids are reported to be proven essential for good health in fish and people, with unique production capabilities that enable a larger scale of production than ever seen before in algae cultivation. 

 

THE CHALLENGE

Much of the challenge revolved around how to scale up to full production after several years of research and development. This required implementing significant automation in a successful collaboration between the international companies and vendors that contributed their expertise to different aspects of the project. 

“The project involved taking some of the existing plant’s capability and repurposing that to produce the omega-3 oil, which required new equipment and controls. At the same time, the plant’s automation system was upgraded. Basically, every arrow in our [automation] quiver was used, so to speak,” says Dwight Wood, vice president of global sales for Owings Mills, Maryland-based NovaTech LLC Process Division, which specializes in continuous control system architecture. 

“This was a very complex, demanding project with a tight schedule and a diverse global team, so it was a monumental task to bring it all together and integrate it into an existing production line while separating out new equipment,” says David McBride, automation engineer at the Nebraska plant. “Evonik asked for a lot, and NovaTech probably even developed some new ‘arrows’ to meet our special needs.”

 

DCS: THE HUB OF THE SYSTEM

According to Wood, NovaTech’s portion of the project included implementation and integration of a distributed control system (DCS) update and expansion; new applications programming, a high-performance human-machine interface graphics; S88 batch management software; an updated real-time data historian application; and I/O migration from an older version to a new modern I/O platform, along with startup and ongoing onsite support.

“The key was implementing the full set of processes in a very robust, reliable, flexible system. It also needed to be highly automated so the plant can effectively run on its own with minimal operator interaction,” says Wood.

While many companies may begin with a standardized solution, as a project develops, much customization often needs to be done to tailor applications to specific processes.

Although certain procedures and processes are increasingly standardized and automated, numerous key steps in and around the automation are still dependent on operator input or manual intervention. When the operator is interrupted to handle other tasks or responses vary from operator to operator, off-spec product can result, requiring costly corrective steps or product disposal.

To minimize such potential operator variability, a DCS—which is a hub of a processor’s operations and monitors key variables such as flow, applied temperatures, pressure, level and material conveying/handling—is utilized. The user interface brings all the data collected from production equipment and the controllers’ process and presents it in a highly “human factored” manner for an operator, generating trends, alarms, etc. 

While the plant was already utilizing NovaTech’s D/3 DCS, this was further upgraded to display real-time process information in a high-performance graphical human-machine interface. 

“For this particular project, there were extremely stringent specifications to produce the end product, so batches must be performed reliably and correctly every time,” says Wood, who notes that NovaTech had a team of engineers onsite at the plant. “So, we worked with the customer to understand the requirements, and then outlined an automation strategy to meet their specific goals from a control perspective.” 

According to Wood, dealing with fermentation processes can be challenging to control, due to a number of variables. The process involves preparing vessels, incoming media and downstream tanks, as well as managing volume, time and temperature in regard to the cultivation of beneficial microorganisms essential to the process.

“Because of all the demands for successful fermentation, it is vital to fully understand the criteria and parameters before executing an automation strategy. This must be aligned to satisfy the control and production objectives,” says Wood. 

When manufacturers produce batches, particularly when utilizing fermentation, they are trying to replicate a perfect “golden batch” each time. Toward this end, the project integrated ISA S88-based layered batch management software called FlexBatch, which is designed to help reduce cycle times and life-cycle automation costs. It was also implemented to aid control and flexibility when slight recipe adjustments may be required. 

The batch management software integrates recipe management and the automation layer so operators can quickly and easily develop, scale up, modify and schedule batch manufacturing recipes as required. 

Comparing each batch historically against the perfect standard can also be an important element of maintaining quality control. To enhance this capability, the project integrated an upgrade to the PI system by OSIsoft, which records data from process control systems like the NovaTech D/3 into a compressed time-series database. This provides manufacturing sites historical predictive insights in real-time.

“It is important to have both real-time and historical access to product data. Having the ability to quickly retrieve that kind of information allows manufacturers to more consistently manufacture product of the highest quality and integrity. And if there is ever a problem with product in the field, it simplifies tracking and troubleshooting,” says Wood.

In order to implement plant automation, it was also necessary to migrate to a modern
I/O system, the 8000 series platform, a remote I/O family native that is integrated with the D/3 system. 

Because there were hardware, software and engineering requirements tied in to the project, NovaTech tested these in their facility before implementing them at the plant. For this project, NovaTech partnered with local contractor Interstates Electrical Contractors for wiring the new I/O, as well as for general support during startup and commissioning of the new system at the plant.

“Even with state-of-the-art manufacturing equipment, controls and production automation in place, how these are applied makes all the difference in the success of the project,” Wood says. 

With the automation project complete, the plant produces omega-3 oil from natural marine algae and is reported to have the capability of producing enough EPA and DHA equivalent as that derived from 1.2 million tons of wild-caught fish each year. The plant’s initial annual production is expected to meet about 15% of the current total demand for EPA and DHA in the salmon aquaculture industry.


For more information, visit www.novatechweb.com.

KEYWORDS: processing processing technology

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Sharon spielman authors

Sharon Spielman is former senior editor of Food Engineering magazine. She has more than 25 years of experience as a writer and editor for a range of trade publications, including those that cover food and beverage processing, restaurants and institutions, chefs, process heating and cooling, finishing, and package converting.

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