CPIM Practice Exam 2025 - Free CPIM Practice Questions and Study Guide

To determine when the planned order release for part Bs should occur, we need to consider the lead time for production as well as the timing of demand for part A.

Since 100 units of part A are required in week 6, and part B has a lead time of one week, the planned order for part B must be released so that it can be available for part A by the required time. This means that the order for part B needs to be placed in advance of its usage in the production of part A.

If A is needed in week 6 and there is a lead time of one week for B, the planned order release for part B should occur in the week prior to when part A is needed. Given part A’s requirement in week 6, part B's planned order release should take place in week 5 to ensure the necessary quantities are ready for assembly or production by week 6.

Upon analyzing the choices, the correct timing for the planned order release for part B should occur in week 5, ensuring that there is adequate time for manufacturing and delivery before the usage in week 6. This aligns with standard practices in material requirements planning, which emphasizes the importance of lead times and order cycles for efficient production management.