Lotsize
Lotsize Coverage<br>
A(top 80% volumn): <2D, produce everday<br>
B(5%-10% volumn): <4D, produce twice/week<br>
C(<5% voumn): <7D, produce every week<br>
D(Spare parts): no fixed lotsize, just produce the SO quantity<br>
MAE restriction：Lotsizing time<br>
Lot-sizing time should be no less than 40min of SMT production to guarantee OEE<br>
Handling Unit
improve transport effeciency
improve storage effciency
Upstream and downstream lotsize consistency：C（一对一）一致，B评估一下<br>
Demand fluctuation<br>
Daily Flutuation<br><br>
XYZ granularity in a month, week, day basis？<br>rolling forecast only provide a month basis granularity, refer to past or furture data?<br>
Prepare the MPART of the module, whcih SO due date are out of the frozen zone<br>
open: 定义MTS max和MTS SO(frozen zone外的）优先级<br>
SO has no forzen zone?<br>
Material aviliability<br>
inside the SO frozen zone or scheduling horizon zone missing raw material(example: horizon: 6days, daily plan: 60pcs)<br>
4/10
4/11
Planned buffer preparation in advance
Movement、改造
CO change
balance capacity for new product
consume expried empty PCB<br>
Unplanned Production Interruption<br>
Material
Downstream material shortage(仅针对超市型号或手工下单的产品，preactor ATP check为手拉手逐层check逻辑）<br>
Downstream material stock deviation
Trouble shooting
Downstream machine down
SMT line down， increase other line production to ensure labor efficiency<br>
material test order
sometimes, material test order may require very small quantity of MPART, generate buffer no less than one lotsize<br>
Others
Production line do not follow FIFO
