iCLIPS

iCLIPS - Capacity & Lead-Time Integrated Procedure for Scheduling
Internet-delivered Service

iCLIPS is a software tool developed from ACLIPS (*), which stands for A Capacity & Lead-Time Integrated Procedure for Scheduling. This approach combines two established operations research methods—queuing approximations and job-shop scheduling algorithms—to support planning and scheduling.
Using planning data, such as Customer Demand Forecasts over the next relevant Planning Horizon (e.g. 20 weeks), Production Routings and Resource Availability, iCLIPS determines the optimal lot size for each component along with the associated lead-time characteristics. This output is periodically updated to reflect changes in the Master Production Schedule (MPS). The calculated optimal lot sizes serve as targets for grouping component requirements into production orders. These updated lot sizes and planned lead times are then adopted by the MRP system for future planning cycles.
Expected Lead Time = WAIT + SETUP + PROCESS
Planned Lead Time = Expected Lead Time + Safety Lead Time

​The Process
  • Prepare Data Set​ - There is a MS Excel Template with all required fields;
    • Resources - Workcenter Avalability on a 24/7 Calendar
    • Demand - Average Demand & Inter-Arrival Time of orders
    • Routings - Operation Details with Set-up & Process Time
    • ​(BOM) - Optional
  • Send File to SupplySquare 
  • iCLIPS Run - Evaluate
    • ​Validation of Dataset and Current Lotsizes
    • Capacity Review
    • Reports
    • Current Lotsizes - Planned Leadtimes
  • Data Review Meeting (Teams)
  • iClips Run - Solve
    • ​Capacity Review
    • ​Reports
    • ​Optimal Lotsizes for Minimal Lead-Times
iclips_input_xls.xlsx
File Size: 20 kb
File Type: xlsx
Download File
(*)  Lambrecht, M. R.; Ivens, P.; and Vandaele, N. J. 1998, “ACLIPS: A capacity and lead-time integrated procedure for scheduling,” Management Science, Vol. 44, No. 11, pp. 1548–1561