Factory layout planning Testo soluzione

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01. Factory Layout Planning - CRAFT Method 1 FACTORY LAYOUT PLANNING (FLP) - FLP consists in the definition of the physical organization of the factory o FLP concerns the search of the most efficient location of the shops (i.e. areas of activities) within a given building or area available in a building o Shops might have needs of space very different one from the other o The objective is the minimization of costs of «relation» between the shops, respecting plant constraints (facility physical structural constraints, building constraints, floor maximum load allowed, service infrastructures) - Results of FLP: CAD drawing of the factory layout OBJECTIVES OF THE FLP PROBLEM One of the traditional objectives is to optimize the efficiency of material flows and the relation between productive areas (and non-productive areas). The FLP problem is multi-objective! Objective Function: - fi,j = material flow between two areas/shops i,j - ci,j = cost per unit of movements between two areas/shops i,j - di,j = distance between two areas/shops i,j COMPUTERIZED LAYOUT TECHNIQUE - Suppose that we are given some space for some shops (i.e. areas of activities). How shall we arrange the shops within the given space? - We shall assume that the given space is rectangular shaped and every shop is either rectangular shaped or composed of rectangular pieces. - We shall discuss: o a layout improvement procedure, CRAFT, that attempts to find a better layout by pair-wise interchanges when a layout is given and o a layout construction procedure, ALDEP, that constructs a layout when there is no layout given. CRAFT CRAFT is one of the first heuristic models (Computerised Relative Allocation of Facilities Technique); it is based on the minimization of moving cost among the shops; it needs a starting…