Managing Uncertainty in a Supply Chain - Impact of Aggregation on Safety Inventory

5 important questions on Managing Uncertainty in a Supply Chain - Impact of Aggregation on Safety Inventory

Give 2 major disadvantages of aggregating all inventories in one location

  1. Increase in response time to customer order
  2. Increase in transportation cost to customer

What is the square-root law?

the rule that if the number of independent stocking locations decrease by a factor n, the average safety inventory is expected to decrease by a factor of n^0.5

What kind of impact has the coefficient of variation of an item?

the higher this coefficient is the greater the reduction in safety inventories as a result of centralization.
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In which two situations do substitutions occur?

  1. Manufacturer-driven substitution; manufacturer or supplier decides to substitute, higher-value product for a lower-value product that is not in inventory.
  2. Customer-driven substitution; customers decide to substitute, low-value product for a high-value product

What is component commonality and what effect does it have?

the use of common components over multiple products, it decreases the overall safety inventory required. The marginal benefit however decreases with increasing commonality.

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