Production Area Control
In this chapter we will study the main tools available to managers of the company to carry out the control of productive activities. This requires that previously has adequate production planning in order to make it possible to compare the provisions of the plans with what actually happens.
Production control uses specific techniques.
A major is the PERT (Project Evaluation and Review Techique), which graphs the activity or project to be controlled.
Graphs: graphics composed of circles linked by arrows, particularly suited to establish relations of priority between activities which make up a project and others.
Another technique are the Gantt charts.
PERT METHOD
Characteristics of projects.
In order to exercise proper control by the method PERT be given a certain order of realization of all the activities that make up a project, order must have a rigorous specification and description, if you want to properly control.
The activities that determine the beginning and end of the project should be clearly defined.
ealizarse are represented by dotted lines and are designated with a lowercase letter f subscript indicating the serial number of such activities.
The project duration
The first thing to consider is the relationship between the total project duration and duration of all component activities, once certain times each and every one of the separate activities necessary to the development of conjugate the same in the project, to determine the total execution time, which is given by the time between the execution of the original process and the final event.
The availability of the duration of each activity allows us to estimate the PERT two dimensions of various temporary measures: the times "early" and times "last".
Gantt
This technique is appropriate to establish a control that allows tracking of each and every one of the activities that make up a project, so as to facilitate the supervision of the execution times of the tasks, as well as early detection which will delays regarding the expected duration.
Is the representation in a coordinate axis of the tasks of a project either by rectangles whose length varies depending on the estimated duration for each.
On the ordinate the project activities, giving each one a length proportional to its length are represented.
They go shading corresponding rectangles as it moves forward in each activity so that you can monitor in real time the evolution of the project.