OPMA CHAPTER 9
From the highest level planning at the top to the lowest level planning on the bottom, rank the following:
1. Aggregate planning 2. Master production schedule 3. Material requirements planning
If a company has an MRP program that can reflect the exact status of each item in real time, this process is called
A net change MPR system
If a company has more units in the master production schedule than firm customer orders, the residual is called
Available to promise
Which of the following are sources of demand for products in a material requirements planning system?
Customer orders from sales personnel Orders for specific components needed in repair Inter-department transactions
The master production schedule typically deals with what type of items?
End items
an _____ _____ ______ system is a computer system that integrates application programs from the functional areas of a firm.
Enterprise resource planning
Finished goods purchased by individuals external to the organization are considered dependent demand items
False
Which of the following is NOT a lot sizing technique used in MRP systems?
Fixed time costs
Which of the following is/are a part of an MRP record
Gross requirements Planning order receipts Net requirements
A bill-of-materials that uses differences in alignment to indicate the order of assembly of components is using which type of structure?
Indented structure
An EOQ lot sizing technique will try to minimize the sum of which of the following costs given a fairly constant demand?
Inventory holding Setup
Setting planned orders to match the net requirements exactly is what type of lot sizing technique
Lot-for-lot
In industry, materials requirements planning also goes by the acronym
MPR
The step in the planning process down from the master production schedule is called
Material requirements planning
Which of the following is/are issues a master scheduler must consider
Never lose sight of the aggregate plan Trade-off manufacturing, engineering and marketing conflicts be involved with customer order promising
The bill-of-material (BOM) file is also known as
Product structure file and product tree
The first step in MRP explosion process is?
Retrieve the gross requirements for end items from the MPS
A company producing widgets only needs Part A for 40% of the widgets built. This company is likely using what type of bill-of-material
Super
Which of the following is NOT a part of the material requirements planning system
Supplier delivery schedule
The file containing the complete production description, parts listing, quantity needed and product build sequence is called
The bill-of-material
______ _______ are a company's attempt to provide a controlled window of opportunity to make changes to the master production schedule.
Time fences
In which of the following product manufacturing scenarios, would MRP provide the highest benefit?
Trucks, appliances, and motors
A least total cost lot sizing technique is a dynamic approach that continually looks for an optimal lot size where carrying costs and ordering costs are close to equal
True
Which of the following is NOT a type of time fence described in the text?
Variable
The master production schedule is used to plan
end items
A material requirements planning system interfaces with the master production schedule, bill-of-materials file and
inventory records file
At any point in time, an MRP system can reference the ___ ____ ____ for information concerning parts availability to help meet gross requirements
inventory records file
At any point in time, an MRP system can reference the ____ _____ ____ for information concerning parts availability to help meet gross requirements.
inventory records file
when changes occur because of stock receipts and disbursements, scrap losses, wrong parts and canceled orders, the real-time file capturing these changes is called the
inventory transactions file
The inventory records file contains an ____ _____ data segment that contains a detailed description of the item, lead time, information, safety stock levels and other records
item master
The _____ _____ _____ lot sizing technique is a dynamic approach that adds ordering and inventory carrying costs for each trial lot size, divides the costs by the number of units, and chooses the lot size with the lowest unit cost
least unit cost
A process that places all identical parts at the same level in the bills-of-materials simplifies computations. this process is known as
low level coding
An item that can be produced and stocked as a subassembly often uses a ______ bill-of-materials for planning
modular
A _____ requirement is the amount needed when the projected available balance plus the scheduled receipts in a period are not sufficient to cover the _____ requirements
net; gross
Lot sizes are the part quantities issued in the planned order receipt and planned ______ ______ sections of an MRP schedule
order release
The file created by retracing a material requirement upward in the product structure to identify each parent item that created the demand is called a _____ record
peg
The ultimate goal of any MRP lot sizing approach is to balance the ____ or _____ costs and the _____ costs associated with meeting the net requirements generated by the MRP planning process
setup, order, holding
