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IMSE 580 > Midterm > Flashcards

Midterm Flashcards

1
Q

Independent Demand

A

Demand that occurs outside of the system

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2
Q

Dependent Demand

A

Demand for components that make up an independent product

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3
Q

Push system

A

A system that computes schedules of what should be produced (inventory is pushed into productin)

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4
Q

Pull system

A

A system where inventory is authorized into production

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5
Q

Purchase order

A

Outside orders made to the company

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6
Q

Jobs

A

inside orders made within the company

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7
Q

Buckets

A

An interval that is used to break time and demand into discrete chunks, used in MRP

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8
Q

End Items

A

The finished products in the MRP

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9
Q

Lower level items

A

Components of the finished items

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10
Q

Bill of Materials

A

A list of all the components that make a finished product

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11
Q

Low level code

A

A code indicating the lowest level in a bill of materials that a particular part has used

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12
Q

Gross Requirements

A

The total demand for a period of time

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13
Q

Master production schedule

A

A table that contains all the information for that component, in terms of production schedule

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14
Q

On Hand Inventory

A

The inventory that is on hand for that period of time

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15
Q

Net Requirements

A

The net amount of items that is required for ordering for that point in time

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16
Q

Steps in the MRP

A

1) Netting - determine net requirements
2) Lot Sizing - Divide the netted demand into appropriate lot sizes
3) Time phasing - Offset due dates
4) BOM Explosion - use start times, lot sizes, and the BOM to generate gross requirements for the lower level items
5) Iteration - repeat for lower level items

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17
Q

Item Master File

A

Organized by part numbers. contains a description of the part, bill of materials, lot sizing information,and planning lead times

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18
Q

Scheduled Receipts

A

a planned order release that actually has been released

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19
Q

Work in process (WIP)

A

Jobs that have not yet arrived at an inventory location

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20
Q

Coverage analysis

A

The process of determining how much demand is “covered” by current inventory

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21
Q

Change notice

A

Adjustments to the schedule receipts

22
Q

Expedition

A

Moving a due date earlier in the planning horizon

23
Q

Defering

A

Moving a due date later in the planning horizon

24
Q

Exception reports

A

used to notify users that there are discrepancies between what is expected and what will transpire.

25
Q

Firm Planned Orders

A

planned order release that is held fixed; meaning it will be released regardless of changes

26
Q

Pegging

A

allows the planner to see the source of demand that results in a given planned order release.

27
Q

Bottom up replanning

A

Method used to see the affect of a change in a lower level part

28
Q

Lot for Lot

A

Order the minimum number of parts required

29
Q

Fixed Order Period

A

Order enough units to cover demand for P periods

30
Q

Fixed order quantity

A

Find EOQ ideal quantity and try to order as close to that as possible

31
Q

Part Period Balancing

A

Multiply the number of parts times the number of periods that the inventory will be held, choose the option that is closest to the set up cost

32
Q

Capacity requirements planning

A

planning based on capacity

33
Q

Long Range Planning

A

resource planning, aggregate planning, and forecasting

34
Q

Forecasting

A

predicting demand in the future

35
Q

resource planning

A

The process of determining capacity requirements over the long term

36
Q

Aggregate planning

A

determining the levels of production, staffing, inventory, overtime, and so on

37
Q

Intermediate planning

A

Demand management, rough-cut capacity planning, master production scheduling, material requirements planning, and capacity requirements planning.

38
Q

Demand management

A

the process of converting long-term aggregate forecast to a detailed forecast, while tracking individual customer orders

39
Q

available to promise (ATP)

A

this feature allows the planner to know which orders on the MPS are already committed

40
Q

job pool

A

a list of planned order releases

41
Q

Critical Ratio

A

Jobs are sorted according to the index computed by dividing the time remaining

42
Q

Goals of Just in Time

A 
Zero Defects
Zero Lot Size
Zero Setups
Zero Breakdowns
Zero Handling
Zero Lead Time
Zero Surging
43
Q

Sources of Waste in Manufacturing

A 
Overproduction
Waiting
Transportation
Inappropriate Processing
Unnecessary Inventory
Unnecessary/Excess Motion
Defects
44
Q

Internal Setup

A

Operations that take place when a machine has stopped

45
Q

External Setup

A

Operations that can take place while the machine is running

46
Q

Steps in Setup Reduction

A

1) Separate internal and external setup
2) Convert as much internal setup to external setup
3) Eliminate the adjustment process
4) Abolish the setup itself

47
Q

Quality Principles of JIT

A

1) Process Control
2) Easy to See Quality
3) Insistence on Compliance
4) Line Stop
5) Correccting one’s own errors
6) The 100 percent check
7) Continual Improvement

48
Q

Goals of Six Sigma

A

increase profits by eliminating variability, defects, and waste

49
Q

Lessons of JIT/Lean

A

1) The production environment itself is a control
2) Operational details matter strategiically
3) Controlling WIP is important
4) Flexibility is an asset
5) Quality can come first
6) Continual improvement is a condition for survival

50
Q

Key insights

A

1) Quality and logistics must be improved together
2) If you don’t have time to do it right, when will you find time to fix it
3) Variability must be identified and reduced

51
Q

kanban

A

a carrying device used to move inventory

IMSE 580 (1 decks)

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