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(4) - 1: Line process (including peripherals)
・The company designates the special line (line designated for the customer of no-restrictions) using ""prohibited substance"" and put up a sign for identification ・Solder irons or cleaning sponges for special use are separated and an identification sticker is pasted on them (4) - 2:WIP storage area (including long-term WIP storage area)
・The company allocates a special area to store WIP which is not subject to restrictions of ""prohibited substances"" and put up a sign for identification
・The company keeps a long term WIP in a locked area and specifies a person in charge to handle
(4) - 3: Rework process
・ The company designates a special repair line used for non-restriction items of ""prohibited substance""
(4) - 4:Production equipment, tools and jib (when they touch or attached to parts or materials)
・ The company segregates specialized production equipment, tools and jib used for no-restrictions of ""prohibited substances"" and puts a label for identification (sticker)
・The company defines the cleaning standards for production equipment, tools and jigs which are used for no-restrictions of ""prohibited sustenance"" and conducts the management accordingly
・For implementing the effectual management method to prevent contamination by incorrect use or admixture, the management method has to be in such a manner that anyone working in management doesn't make any mistake (ex. labeling, specialization, limiting the person in charge, etc.) "