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Glass Fabricator Increases Visibility With RFID
AeroScout's Wi-Fi-based active tags and real-time locating system help Viracon locate its glass carriers, as well work-in-progress, at its 1-million-square-foot Minnesota facility.
Apr 29, 2008—Following the completion of a pilot at its manufacturing site in Owatonna, Minn., architectural glass fabricator Viracon is rolling out a company-wide Wi-Fi-based active RFID real-time location system (RTLS) to locate thousands of its glass carriers as they move through production.
The system, provided by AeroScout, is already being employed to track, monitor and manage all glass carriers throughout Viracon's 1-million-square-foot campus in Minnesota. By August 2008, the company intends to deploy the system at its two other facilities, located in Statesboro, Ga., and St. George, Utah.
Hundreds of carriers often pass back and forth the between the three buildings on the Owatonna campus, says Todd Schelling, Viracon's production manager. "It's very much the opposite of an assembly line," he says. Instead of following a predictable path through assembly, the glass is wheeled from one station to another in variable patterns, depending on the custom work being performed. For that reason, locating carriers can be challenging.
Until it launched an RFID-based pilot in the fall of 2007, the company utilized a handheld Intermec SF51 mobile bar-code scanner to track carrier movements. When a carrier was first loaded, a bar-coded ID label was attached to each piece of glass. The glass pieces' labels were scanned, along with a bar-code ID label attached to the carrier, linking them to a customer's order in Viracon's back-end inventory-management system.
When the carrier was wheeled to a station for processing, an employee at that station would scan the ID number on the carrier to update the system regarding the order's location. Employees scanned the carriers only about 60 percent of the time, however, so when workers searched for a specific order, they sometimes needed to walk the length of an entire assembly floor looking for it. If the carrier still could not be found, Viracon then had to reintroduce that order and restart the manufacturing process from scratch. If the company later located the missing carrier, the partially processed glass it contained was discarded.
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