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At Glass Factory, RFID Boosts Worker Safety and Productivity
AGC Flat Glass Europe is using EPC tags and readers to help automate the packaging of large sheets of glass, and to ensure forklift drivers are beyond the reach of robot-operated cranes.
Dec 01, 2008—AGC Flat Glass Europe, a division of Asahi Glass Co. that employs 10,600 workers and reports €2 billion ($2.5 billion) in annual sales, is using an RFID application to help ensure worker safety in an area of its Moustier, Belgium, plant in which robot-operated cranes are utilized to package large sheets of glass.
Eric Deneye, AGC Flat Glass Europe's IT program leader, told attendees at last month's RFID Journal LIVE! Europe conference in Prague that the system provides the company with real-time information regarding the locations of four large forklifts as workers drive them into and out of the packaging area. The RFID system was installed at one area of the factory that was remodeled and is now used for packaging glass as large as 300 centimeters by 321 centimeters (118 inches by 126 inches).
After the production stage, sheets of glass are loaded onto a so-called stillage—a frame with four legs, a raised base and a rail several meters above the base. Approximately 1,000 stillages are fitted with two tags apiece, one on each of the frame's front legs. The two tags are encoded with the same unique ID number.
Forklift drivers must deliver the loaded stillages to the packaging area. To do so, they pick up a frame and carry it to one of 12 doors, each fitted with an RFID interrogator antenna. Using an onboard computer, the driver requests that a door be opened, and as the forklift moves through that door, its RFID interrogator reads the stillage tags and updates the system with the forklift's location.
Since RFID readers identify the stillages that enter the packaging area, workers need not take the time to dismount their forklifts in order to identify a stillage by scanning its bar-coded label. At other areas of the plant, staff members must climb down from their forklifts to read the bar codes, sometimes slipping and spraining their ankles.
The system is set up so that the crane cannot operate while a forklift is within a marked-off row in the packaging room. When the forklift driver is ready to exit that section, he pushes a button to open a door. After driving his forklift out of the packaging area, he presses a second button to close the door once more. Once the door is reclosed, a robotic crane picks up individual panels of glass and packages them in protective coverings of plastic and wood.
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