How to Use MRP in Continuous Production Industries When Order Type is Lot for Lot

Continuous materials requirements planning (CMRP) approach when order type is lot for lot and safety stock is zero and its applications

The materials requirements planning (MRP) approach, applied in production planning and management has some weaknesses. One of those is the discreteness of time so called time periods in this approach which makes it impossible to order the requirements at irregular time moments or periods. In this paper, a new form of MRP, named as continuous materials requirements planning (CMRP) approach, is i...

Lot-sizing and flow production in an MRP-environment

In the paper methods are developed to analyze a production process for professional equipment with advanced electronic and mechanical features. The starting point of the analysis is to find ways for production control and production organization which maintain and even strenghten the advantages of the MRP-system. but also mend the disadvantages to a large extent. The main advantages which could...

Augmenting the lot sizing order quantity when demand is probabilistic

In this paper we consider a single item, discrete time, lot sizing situation where demand is random and its parameters (e.g., mean and standard deviation) can change with time. For the appealing criterion of minimizing expected total relevant costs per unit time until the moment of the next replenishment we develop two heuristic ways of selecting an appropriate augmentation quantity beyond the ...

An Integrated Production-Inventory Model with Backorder and Lot for Lot Policy

    inventory model,   backorder   buyer ,   vendor,   lot for lot policy In this paper, an inventory model for two-stage supply chain is investigated. A supply chain with single vendor and single buyer is considered. We assume that shortage as a backorder is allowed for the buyer and the vendor makes the production set up every time the buyer places an order and supplies on a lot for lot basis...

More on lot-to-lot changes.

Adaptive Production Management for Small-Lot Enterprise

Currently the methodology of eliminating the negative effects of the issues in ramp-up stage mostly involves the increase in investment and updating the design data. In the paper the authors consider an approach that can be applied on every level of ramp-up production: from suppliers to shopfloor operators. The architecture of the system is described and the first implementation results are given.