12. lean operations

what is JIT

this sets out to cut costs by reducing the amount of goods a firm holds in stock

what are push and pull systems

• push work is pushed to the next station when completed

• pull work is pulled when needed

what is the rule of inventory reduction

the idea that inventories hide issues

what is lean production

elimination of all forms of waste that dont add value to develop a more effective process

where does lean production come from

maker of toyota, who emphasized the idea of minimsing waste

what are the forms of waste

1. overproduction

2. waiting times

3. transport

4. overprocessing

5. inventory

6. motion

7. defects/inspection

what is 5ss

a way of organising the work area in a visual order

• sort

• straighten

• shine

• stadardise

• sustain

how do we eliminate waste

1. inolve everyone

2. continous improvement

what is kanban

CARD these pull a product thorugh the production process it provides direct control and lmit on the amount of work in processes between cells

we need to know the lead time needed to produce a container of parts and the saftey stock needed

formula for number of kanbans

demand during lead time+saftey stock/size of contrainer

what are the times in operations management

1. takt

2. cycle

3. throughput

4. lead

takt time

rate of production required to meet consumer demand this is the max time available to produce one unit to satisfy the customer

total work time available/units required to satisfy demadn

cycle time

actual rate of production

production time available/numver of units produced

throughput time

time it takes for one unit to go through the production process

order dispatch-order release

lead tine

time taken between the start and end of a production process

order delivered-order received