Use of network planning methods in designing modern ization of agri-food processing enterprise to improve organization of production: example of meat processing plant

anglais. Project management is an integral part of any inve stment process. Any project management process consists of three main components: planning, schedu ling and controlling. Scheduling is a frequent task in the manufacturing processes. There are various methods for scheduling, of which the most popular are the P rogram Evaluation and Review Technique (PERT), and Critica l Path Method (CPM) – developed in 1956-1958. PERT and CPM are basically time-oriented methods in the sense that they both lead to the determination of a time schedule. The most important difference between the m is that originally the time estimates for the act ivities were assumed deterministic in CPM and probabilistic in P ERT. In this paper the PERT-COST method was used to design the modernization of production processes in a meat processing plant. The PERT-COST method adds the consideration of costs to the schedule developed by the PERT procedure. The main objective in the time -cost trade-off problems has always been the reduction in the total cost. Reducing the original project dura tion (“crashing PERT networks”) is aimed at meeting a de sired deadline while incurring the lowest cost. The research method used in the work included the typical PERT p rocedure (identification of specific activities and milestones, determination of the proper sequence of actions, development of a network diagram, estimat ion of the time of each activity, determining the critical path) and cost analysis (PERT-COST) to determine h ow to reduce the time schedule, while minimizing the incr ease in the total costs. In this paper the PERT-COS T method was used to design the modernization of production processes in a meat processing plant. The productio n processes were analysed: sausages, pork meats, smok ed meats and block products. Then, for each of the production processes, network diagrams were develop ed and a time-cost analysis was carried out. An opt imal plan to shorten the duration of individual producti on processes was developed.

anglais. network planning method, PERT-COST, time-cost trad e-off problem, time schedule

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