just-in-time manufacturing has led to increased monitoring of supplier delivery performance. Little is known, however, about transit times, specifically the lead time from distribution to customers. Too often, when an order leaves the dock, management considers the job complete. Many companies only track their shipment or delivery performance by tracing an order from placement date to shipment date. Transportation technology has reduced delivery lead time, but some variability still exists. Such information is critical for companies evaluating different modes of transportation.
Commercial carriers such as Federal Express do track their delivery performance, and manufacturers can use this information to understand their delivery cycles. But they must plan carefully. One workstation manufacturer wanted to do this but found that because it used a different order numbering system than its carriers, it was difficult to match order information.
Some companies respond well to uncertainties, but they fail to work on ways to eliminate them. A classic example is that of purchasing managers who routinely modify their inventory stocking policies for purchased parts to avoid stockouts during manufacturing but do nothing to improve their suppliers’ delivery performance, one of the root causes of the problem.
Pitfall 6: Simplistic Inventory Stocking Policies
Understanding and tracking sources of uncertainties is the first step. The next step is to use such information to drive inventory stocking policies. This is a dynamic process; the uncertainties are constantly changing. Some suppliers become more reliable in both delivery and quality; others become less reliable. Demand for some items becomes more predictable as products mature; demand for others becomes more unpredictable. Inventory needs for some components stabilize as multiple products use common parts. Inventory stocking policies should be periodically adjusted to reflect such changes.
just-in-time manufacturing has led to increased monitoring of supplier delivery performance. Little is known, however, about transit times, specifically the lead time from distribution to customers. Too often, when an order leaves the dock, management considers the job complete. Many companies only track their shipment or delivery performance by tracing an order from placement date to shipment date. Transportation technology has reduced delivery lead time, but some variability still exists. Such information is critical for companies evaluating different modes of transportation.Commercial carriers such as Federal Express do track their delivery performance, and manufacturers can use this information to understand their delivery cycles. But they must plan carefully. One workstation manufacturer wanted to do this but found that because it used a different order numbering system than its carriers, it was difficult to match order information.Some companies respond well to uncertainties, but they fail to work on ways to eliminate them. A classic example is that of purchasing managers who routinely modify their inventory stocking policies for purchased parts to avoid stockouts during manufacturing but do nothing to improve their suppliers’ delivery performance, one of the root causes of the problem.Pitfall 6: Simplistic Inventory Stocking Policiesทำความเข้าใจ และติดตามแหล่งที่มาของความไม่แน่นอนเป็นขั้นตอนแรก ขั้นตอนถัดไปคือการ ใช้นโยบายการจัดเก็บสินค้าคงคลังของไดรฟ์ข้อมูลดังกล่าว นี้เป็นกระบวนการแบบไดนามิก ความไม่แน่นอนที่จะเปลี่ยนแปลงตลอดเวลา ซัพพลายเออร์บางกลายเป็นความน่าเชื่อถือในการจัดส่งและคุณภาพ คนอื่นจะเชื่อถือได้น้อย อุปสงค์สำหรับสินค้าบางชนิดจะสามารถทายเป็นผลิตภัณฑ์เติบโต ความต้องการอื่น ๆ จะไม่แน่นอนมากขึ้น ความต้องการสินค้าคงคลังสำหรับส่วนประกอบบางอยู่ดีเป็นผลิตภัณฑ์หลายใช้ชิ้นส่วนทั่วไป สร้างนโยบายสินค้าคงคลังควรมีการปรับปรุงเป็นระยะ ๆ การเปลี่ยนแปลงดังกล่าว
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