Supply Chain Chapter 11
Type of Inventory Systems
1. Fixed-order Quantity System 2. Fixted Time Period System
Cycle Stock
1. To meet customer demand * Immediately fill customer orders * Deploy the product / material near where it will be used
Types of Inventory
Internal & External
Pipeline Inventory
Inventory in transit. Inventory held / owned by suppliers, or by wholesalers, distributors, retailers, and customers.
What are aspect of Internal Inventory Held by companies to:
meet customer demand buffer against uncertainty in demand and/or supply decouple supply from demand decouple dependencies in the supply chain
External Inventory
* Inventory held by downstream supply chain channel partners * Pipeline Inventory
What is the primary function of Inventory
1. Buffer * Buffer uncertainty in the marketplace & 2. Decouple * dependencies in the supply chain (safety stock) Maintaining adequate finished product inventory allows a company to fill customer orders immediately Maintaining adequate materials inventory allows a company to support manufacturing operations and the production plans.
What are the three levels of internal inventory held by companies:
1. Strategic Stock 2. Safety Stock 3. Cycle Stock
Strategic Stock
1. To Decouple Supply from Demand: Supply pattern is different from demand pattern: Achieve economies of scale in production or procurement Take advantage of volume price breaks and discounts Speculative buying in anticipation of a price increase Seasonal product demand requirements
Goal of Inventory
1. inventory management is to meet customer expectations while also meeting the company's financial targets. * Enable Sales * Increase profitability * Improve Cash Flow
Reorder point =
Demand (D) during lead time
The reorder point:
The lowest inventory level at which a new order must be placed to avoid a stockout is known as the
Safety Stock
To Buffer Against Uncertainty and Decouple Dependencies in the Supply Chain Uncertainty in demand: sales or usage above expectations Uncertainty in supply: shortages, delays, disruptions Separating operational dependencies
Categories of Inventory
raw materials used in production, work-in-process items (semi-produced but not complete) finished products to provide customer service, maintenance, repair, and operating supplies needed to run a business