Opertaing Efficiency

Question 1

key JIT concepts

Answer 1

Generating flow - no inventory, colocate
simplified production process - general purpose machines or easier to readjust; use one machine for multiple tasks
Blanket purchase requisitions, less paperwork

Question 2

Push system

Answer 2

move materials through production based on schedule, work in batches

Question 3

Pull system

Answer 3

moving materials based on need

Question 4

value stream mapping

Answer 4

identify non value adding activities/items
reduce/eliminate impact on cost
identify points where value is created

Question 5

GT

Answer 5

Group Technology
each part follows same essential processing sequence
avoid delays due to setup time

Question 6

kanban

Answer 6

card used to signal need for parts downstream in JIT

order to use parts in a container or fill container with parts, containers for moving parts between work centers

Question 7

c-kanban

Answer 7

conveyance kanban - move container of parts
any one center cannot hoard parts
inventory can only be replensihed when conainter is empty

Question 8

c-kanban rules

Answer 8

only move full containers when card is attached

only use standard containers

Question 9

dual card kanban

Answer 9

c-kanban and p kanban (production kanban)
p=kanban is to fill container with parts
more control over production and inventory

Question 10

TPM

Answer 10

total preventative maintenance
emphasize maintenance
perform maintenance each day
operator performs maintenance

Question 11

JIT aggregate plan

Answer 11

slightly shorter planning horizon than AP than MRP

Question 12

JIT master schedule

Answer 12

2-3 m planning horizon

shorter frozen period

Question 13

When is master schedule used in JIT?

Answer 13

only when items with long lead times need to be ordered

intermediate step to final assembly scheduling

Question 14

Final Assembly Schedule

Answer 14

JIT
exact statement of products to be assembled
stated daily
week into future

Question 15

mixed model sequencing

Answer 15

spread out production of an end product through entire day for level assembly schedule

Question 16

what does level assembly schedule require

Answer 16

smallest number of units produced at one time of each end product
smooth out production to closely match demand

Question 17

cycle time

Answer 17

working time per day/units required per day

Question 18

2 types of waste

Answer 18

necessary but non value added - some work in process inventory, show room
pure waste

Question 19

seven areas of waste

Answer 19

overproduction
waiting
transportation
overprocessing - channel bundles
inventory
motion/movement
defects

Question 20

Opportunities presented by JIT

Answer 20

Elimination of waste
people utilization
cost reduction
quality and reliability
product flexibility
volume flexibility
deliver dependability