Flashcards in 14. Process Characteristics Deck (19)
Process Flow Metrics P. 205
-Value added activity
Work in Progress (WIP)
Material between input and output (finished) stage.
Asset and Liability.
Work in Queue (WIQ)
Material waiting to be processed. One component of WIP.
Time of a unit of product is actually being worked on.
Rate in time per unit at which the process must complete units in order to achieve the customer demand.
Time per unit:
Time available / # units to be produced
Unit per time:
# units to be produced / Time available
Time required to complete one unit form the beginning of the process to the end of the process.
Amount of output that passes through the process in a specified period of time.
Time from the last unit on one job to the fist good unit of the next job.
Hidden Factory P. 208
The collection of activities in a process that generate waste (loss time, money, and effort).
Process Analysis Tools
-Value Stream Maps
Flowcharts P. 209
Pictorial or graphical representation of a process.
1. Define the process
2. Define the boundaries
3. Determine the level of detail
4. Brainstorm the activities that take place
5. Arrange proper sequence
6. Draw arrows to show flow
7. Review with other to seek agreement
Process Maps P. 211
Concept of Y= f(X). Basic anatomy:
-Input variables (X). Below the flow line.
-Desired output. Above the flow line.
Input Variables (6 M's) P. 213
-Mather Nature (Environment)
Input Variables Classification P. 214
N- noise (too expensive or uncontrollable)
SOP- predefined way of a process (C)
X- Critical subset of controllable variables
Value Stream Map P. 217
1. Produce to the takt time.
2.Create continuous flow wherever possible.
3. Use supermarket pull systems to control production where continuous flow does not extend upstream.
4. Send the customer schedule to only one production process (the pacemaker process).
5. Level the product/service mix evenly over time at the pacemaker process.
6. Level the production volume by creating an "initial pull," releasing and withdrawing small, consistent increments of work at the pacemaker process.
7. Develop the ability to make "every part every day" in processes upstream of the pacemaker process.
Work Instructions P. 221
-All relevant header info that links the product to the work instruction.
-All the parts required.
-All the consumable raw materials.
-All the tooling and fixtures required.
-All the personnel required.
-Potential safety hazards.
-Potential opportunities to create defects.
-Meaningful and properly annotated graphics & designs
-The exact sequence of steps.
Spaghetti Diagrams P. 222
Product flow paths in an organization.
Circle Diagrams P. 224
Show linkages between various items.
Readily depict predecessor and successor relationships as well as potential bottlenecks..