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Published on: 8/25/2008
Last Visited: 9/6/2008
"Although we were primarily interested in the food safety benefits of I.R. pasteurization as well as protecting our brand, we also felt there was an opportunity to optimize the equipment in terms of human safety and ease of maintenance," says Steve Valesko, Butterball vice president of engineering."We also sought to incorporate automation features that would monitor equipment status and notify the operator if the I.R. pasteurizer was approaching a need of service."
The trial run
Valesko, a longtime veteran of the industry, says that although he anticipated the need to customize the new I.R. equipment to Butterball's specs, the engineering and production groups began the move to the new pasteurization equipment by trying standard equipment offered by Unitherm Food Systems of Bristow, Okla.
"They are a major supplier of equipment to our industry, and we were assured that they would work with us to tailor the new equipment to meet our requirements," Valesko says, "so we felt that 'test-driving' the standard equipment would both facilitate and expedite and that process."
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"We ran the initial equipment for about a month," Valesko says."And, although it was quite evident that we would need to make alterations to our final I.R. pasteurization equipment design, that trial period with the 'off the shelf' equipment was highly beneficial.It permitted us to see the equipment in action and redesign it with Unitherm to meet the needs of both our process and our products."
The preliminary trials, held at Butterball's Jonesboro plant, entailed full production runs, checking product temperatures and ensuring that the I.R. pasteurization performed the proper amount of log reduction of foodborne bacteria.
"Our basic concern was to ensure the wholesomeness of our product," Valesko says, and that entailed the necessary protection of our deli products prior to sealing it in the bag."
He adds that some of Butterball's deli customers, including major supermarket chains, have begun to request I.R. pasteurization as an assurance of safety for the meat and poultry products that they slice and sell.
3D for validation
After the trial run, Butterball engineers and process people decided on several upgrades for the I.R. pasteurizing equipment, either to meet their food safety goals or to better integrate with the process.
"What we didn't want was to change the way the equipment operated," Valesko explains.
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"The 3D modeling was one of the beautiful parts of this project," Valesko explains."It allowed us to see exactly what the machine was going to look like.And from highly detailed 3D images we were able to make even further alterations than we would have otherwise, including structural changes to the frame of the machine to where the electrical panel was going to be located, and things like that.If it had been a typical 2D program we probably would not have done that."
Valesko adds that the 3D illustrations helped Unitherm to cooperate fully in adapting or bending its equipment design to meet Butterball's production and quality requirements.
"We worked very well together on the project," he says.Now, we feel assured that the equipment has been design to accomplish what we've set out to do."
He says that although Butterball was responsible for the redesign of I.R. pasteurization system, nothing about the final concept is considered proprietary.
"The improvements that we made had to do with food safety and human safety issues.Those are concerns that are shared by the entire industry," Valesko says.