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Operations

Inventory control charts, re-order levels and lead time

  • 2 things to know
  • Component 02

Overview

Recall questions on inventory control charts, buffer inventory, maximum inventory level and lead time, calculating the re-order level and re-order quantity, interpreting a chart and its main limitation.

What you need to know

Answer each one before you reveal it.

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Key term

Define buffer inventory.

Key term

What is the maximum inventory level?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What does an inventory control chart show?

    Model answer

    It shows how the quantity of an item held changes over time, together with the maximum level, the buffer level and the point at which a new order is placed.

  2. 2

    Define buffer inventory.

    Model answer

    Buffer inventory is the minimum quantity a business intends always to hold, kept as protection against late delivery or unexpectedly high demand.

  3. 3

    What is the maximum inventory level?

    Model answer

    The maximum inventory level is the largest quantity of an item a business is prepared to hold, set by its storage space, its cash and the risk of the goods becoming obsolete.

  4. 4

    Define lead time.

    Model answer

    Lead time is the period between placing an order with a supplier and receiving the goods.

  5. 5

    What is the re-order level?

    Model answer

    The re-order level is the quantity of stock remaining at which a new order must be placed, so that the delivery arrives before the buffer inventory is used up.

  6. 6

    State how the re-order level is calculated.

    Model answer

    Re-order level = average usage per day × lead time in days, plus the buffer inventory the business intends to keep.

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