CPIM MODULE 6 N & O
Reducing planned queue times at work centers.
Rationale
Queue time makes up most of the lead time, so reducing what is planned will reduce the
amount of time the product is in process. - answer Manufacturing lead times can be
reduced by:
Answers
ensuring that there is a backlog of work so that no machines are idle.
increasing the number of operators at the work center.
reducing planned queue times at work centers.
reducing input at bottleneck work centers.
priority of the job.
Rationale
If dispatching rules push a job to the end of the sequence, the queue time will possibly
be longer than planned. The inverse is true if an order is moved up in the sequence. -
answerThe actual queue time of a job at a work center is most impacted by the:
Answers
priority of the job.
efficiency of the work center.
lot size of the job.
utilization of the work center.
It requires recalculating load when the schedule is missed.
Rationale
Missed schedules result in load that must be accounted for when determining available
capacity. - answerWhich of the following statements about finite capacity loading is
true?
Answers
It requires recalculating load when the schedule is missed.
,It does not require knowing the capacity available in each time period.
It is a simpler process than infinite capacity loading.
It does not require the ability to determine priorities when loading jobs.
Increased responsiveness to customer demand
Rationale
Reducing lead times, specifically setup times, allows for more frequent changes to
adapt to changes in demand. - answerReducing lead time has which of the following
results?
Answers
Increased fixed manufacturing costs
Decreased fixed manufacturing costs
Increased responsiveness to customer demand
Shorter planning cycles
Customer order priority
Rationale
Customer order priority is used by MRP. The others are sequencing rules used by
production scheduling. - answerWhat information from material requirements planning
(MRP) can be used to sequence production orders?
Answers
Customer order priority
Required start date
Critical ratio
Shortest processing time
Both techniques use the same lead times.
Rationale
Both will use either a standard or calculated lead time. - answerIn a company that
regularly has a past due order condition, backward scheduling in material requirements
planning and forward scheduling in an assemble-to-order environment have what in
common?
,Answers
Both techniques identify the same start dates.
Both techniques use the same lead times.
Both techniques use the same required dates.
Both techniques calculate the same critical path.
External setup
Rationale
External setup is performed while the previous job is being run - answerWhich of the
following elements of lead time is ignored by capacity requirements planning?
Answers
External setup
Internal setup
Move
Wait
Interoperation time
Rationale
The correct terminology for interoperation time is being tested here. Although queue
and move times are both components of interoperation time, neither includes all the
elements between completion of run time at one operation and the beginning of setup at
the next. Post-operation time would include only wait time and possibly move time. -
answerWhat is the interval between the completion of run time for one operation and
the beginning of the setup at the next operation called?
Answers
Interoperation time
Queue time
Move time
Post-operation time
Establishing sequence
, Rationale
Determining sequence is most important due to shared resources. - answerWhich of the
following capabilities of finite loading is most important in an environment where
routings use many of the same work centers?
Answers
Establishing sequence
Determining load
Maintaining priority
Defining capacity
Constraint-oriented finite loading
Rationale
Constraint-oriented finite loading is a technique that plans orders around bottleneck
work centers. The objective is to maximize total production throughput. - answerA
company has limited resources in some work centers and bottlenecks that move around
based on product mix. Salespeople must be notified of overloads so schedule changes
can be made with customers. Which of the following scheduling techniques should be
considered by management?
Answers
Finite master production scheduling
Constraint-oriented finite loading
Resource requirements scheduling
Rough-cut capacity scheduling
Grouping production equipment into focused work cells
Rationale
Using cellular manufacturing would change the way product is scheduled, sequenced,
and managed. - answerWhich of the following would have the most impact on the use of
a production activity control (PAC) system?
Answers
Implementing modular bills of material for items with options
Changing the rate of production in a continuous manufacturing process type
Grouping production equipment into focused work cells
Reducing planned queue times at work centers.
Rationale
Queue time makes up most of the lead time, so reducing what is planned will reduce the
amount of time the product is in process. - answer Manufacturing lead times can be
reduced by:
Answers
ensuring that there is a backlog of work so that no machines are idle.
increasing the number of operators at the work center.
reducing planned queue times at work centers.
reducing input at bottleneck work centers.
priority of the job.
Rationale
If dispatching rules push a job to the end of the sequence, the queue time will possibly
be longer than planned. The inverse is true if an order is moved up in the sequence. -
answerThe actual queue time of a job at a work center is most impacted by the:
Answers
priority of the job.
efficiency of the work center.
lot size of the job.
utilization of the work center.
It requires recalculating load when the schedule is missed.
Rationale
Missed schedules result in load that must be accounted for when determining available
capacity. - answerWhich of the following statements about finite capacity loading is
true?
Answers
It requires recalculating load when the schedule is missed.
,It does not require knowing the capacity available in each time period.
It is a simpler process than infinite capacity loading.
It does not require the ability to determine priorities when loading jobs.
Increased responsiveness to customer demand
Rationale
Reducing lead times, specifically setup times, allows for more frequent changes to
adapt to changes in demand. - answerReducing lead time has which of the following
results?
Answers
Increased fixed manufacturing costs
Decreased fixed manufacturing costs
Increased responsiveness to customer demand
Shorter planning cycles
Customer order priority
Rationale
Customer order priority is used by MRP. The others are sequencing rules used by
production scheduling. - answerWhat information from material requirements planning
(MRP) can be used to sequence production orders?
Answers
Customer order priority
Required start date
Critical ratio
Shortest processing time
Both techniques use the same lead times.
Rationale
Both will use either a standard or calculated lead time. - answerIn a company that
regularly has a past due order condition, backward scheduling in material requirements
planning and forward scheduling in an assemble-to-order environment have what in
common?
,Answers
Both techniques identify the same start dates.
Both techniques use the same lead times.
Both techniques use the same required dates.
Both techniques calculate the same critical path.
External setup
Rationale
External setup is performed while the previous job is being run - answerWhich of the
following elements of lead time is ignored by capacity requirements planning?
Answers
External setup
Internal setup
Move
Wait
Interoperation time
Rationale
The correct terminology for interoperation time is being tested here. Although queue
and move times are both components of interoperation time, neither includes all the
elements between completion of run time at one operation and the beginning of setup at
the next. Post-operation time would include only wait time and possibly move time. -
answerWhat is the interval between the completion of run time for one operation and
the beginning of the setup at the next operation called?
Answers
Interoperation time
Queue time
Move time
Post-operation time
Establishing sequence
, Rationale
Determining sequence is most important due to shared resources. - answerWhich of the
following capabilities of finite loading is most important in an environment where
routings use many of the same work centers?
Answers
Establishing sequence
Determining load
Maintaining priority
Defining capacity
Constraint-oriented finite loading
Rationale
Constraint-oriented finite loading is a technique that plans orders around bottleneck
work centers. The objective is to maximize total production throughput. - answerA
company has limited resources in some work centers and bottlenecks that move around
based on product mix. Salespeople must be notified of overloads so schedule changes
can be made with customers. Which of the following scheduling techniques should be
considered by management?
Answers
Finite master production scheduling
Constraint-oriented finite loading
Resource requirements scheduling
Rough-cut capacity scheduling
Grouping production equipment into focused work cells
Rationale
Using cellular manufacturing would change the way product is scheduled, sequenced,
and managed. - answerWhich of the following would have the most impact on the use of
a production activity control (PAC) system?
Answers
Implementing modular bills of material for items with options
Changing the rate of production in a continuous manufacturing process type
Grouping production equipment into focused work cells
