Planning in production systems

PPS systems – production planning and control systems

Slovak University of TechnologyFaculty of Material Science and Technology in Trnava

Production planning and control systems are in literature presented under the name:

Production Planning System (PPS) Production Planning and Control (PPC) Manufacturing Resource Planning (MRP

II) Production Management System (PMS)

Tasks of PPS systems

to secure scheduling of customer’s order by production

to coordinate ordering process by production, in a way to fulfil its realization in optimal relations

PPS structurePPS structure

Production planningdefine assortment and quantity of production

orders, that should be released – place an order into production

to secure their term layout for available production facilities

PPS structurePPS structure

Production controlling connects on tasks of production planningcoordinates reciprocal action for basic

elements of production processcoordinates reciprocal action of main and

helping production processes

Basic structure of PPS system

Data administration common for both areas of PPS collection, processing, administration of all

basic data needed for PPS system basic data:

information about suppliers information about customers information about products and orders bills of materials information about production structure technological process information about production tools

Production program planning

realization and creation of gross production program ( production quantity, amounts and terms)-

activities:demand requestsplanning of customer ordersgross terming of customer orders informative calculation of capacitiesgross calculation of material usage

Planning of quantity arrangements that are needed for security

of material production, in regard of product type, quantity and terms

entrance bases – production documentation, size of reserves

specific activitiesplanning material requestscalculation of reservescalculation amount orderedmaterial ordering

Term and capacity planning

designates capacity demands and time schedule of production, occupied capacities are taking into consideration during calculation

technological processes consist of : time schedule of production orderscalculation of capacitiesharmonization of capacitiesplanning continuity of production

Controlling of production orders

characteristic activities:releasing of orders into productionpreparation of production documentationcontrol of the production safetyshort term schedule of production

Monitoring of production orders

control the making progress of production order

activitiescontrol time keeping of schedule in short

term productioncontrol of quantitycontrol the fulfillment terms of production

orders control of machine capacity usage

Requests on PPS

ability to respond quickly on customer’s demands from the view of size, terms and properties of products

ability to introduce new products into going production

keeping beneficial production costs accurate forecast of material demands

Requests on PPS

possibility of early recognition and mastering the capacity differences

unloading from routine activities support the production control, which is

oriented on material flow stabilization of production program

Choice and application of PPS application of PPS system into company =

high costs PPS system needs to be adapted on real

company conditions, that are the most modified by:company profileactual company’s organizational structureactual structure of production progress of material flowsexistent structure of system collecting and

data processing