MRP & Production Control Flashcards
7 cards from real CPM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 MRP & Production Control flashcards as text
In MRP, what is the purpose of 'time-phasing' requirements?
Answer: To offset gross requirements by lead time so orders are placed at the right time
Time-phasing offsets gross requirements by the item's lead time so that planned order releases occur early enough to receive materials when needed.
Which MRP input file specifies the raw materials, components, and sub-assemblies required to build one unit of a parent item?
Answer: Bill of Materials
The Bill of Materials (BOM) defines the parent-child relationships and quantities needed to produce each assembly level.
A company has a gross requirement of 500 units, scheduled receipts of 100 units, and on-hand inventory of 75 units. What is the net requirement?
Answer: 325 units
Net requirement = Gross requirement − Scheduled receipts − On-hand = 500 − 100 − 75 = 325 units.
What does 'pegging' accomplish in an MRP system?
Answer: Traces a component's demand back to the parent order that generated it
Pegging links a lower-level component requirement to the specific parent order that created the demand, supporting root-cause analysis of shortages.
Which lot-sizing rule minimizes holding costs while potentially increasing setup costs?
Answer: Lot-for-Lot
Lot-for-Lot orders exactly what is needed each period, eliminating excess inventory and holding costs but requiring a setup each time there is demand.
In a closed-loop MRP system, which function provides feedback that actual capacity is insufficient to execute the MRP plan?
Answer: Capacity Requirements Planning (CRP)
Capacity Requirements Planning compares planned work orders to available capacity and feeds back constraints so the MPS or MRP plan can be adjusted.
What is 'nervousness' in an MRP system, and what is a common remedy?
Answer: Frequent, disruptive changes to planned orders from small demand shifts; remedy is time fences or firm planned orders
MRP nervousness refers to large plan changes triggered by small demand variations; time fences and firm planned orders stabilize the schedule.