- 02/03/2013
- Posted by: essay
- Category: Free essays
As a project environment differs from the terms of cyclic production, some features are inevitable in application of Method of Critical Chain. But in-use in its conceptions in a great deals those, what in the method of DBR. What does distinguish Critical Chain from PERT/CPM (Critical path method) and other traditional approaches in a project management?
At first, the Critical Chain recognizes and takes into account some phenomena of human conduct, which are not taken into account in the traditional methods of project management. These phenomena include:
1. Inclination of performers to “blow” up the estimation of time for individual tasks (to create a protective “pillow”), in an attempt to defend oneself from unpleasant consequences in the case of delay of their completion in the planned term.
2. So-called “student syndrome” – i.e. tightening of beginning of implementation of the planned work to the latest minute.
3. Parkinson’s Law (asserting, that work occupies all taken time, without depending on that, how quickly similar works can be executed).
4. Multitasking is a management tendency to charge workers a few urgent tasks simultaneous. Multitasking can cause a destructive effect. The participants of project are commuted from a task to the task, and, in the total, break them all. Work of all other resources stays too long as a result, a cut-in which depends on completion of preceding tasks. The “row” of delays begins at presence of a few simultaneous projects.custom research paper
In continuation of our analyze we should say that appearing as a result of such conduct delays in performing the orders are investigation of erroneous pre-condition in practice of project management: for example, the unique method to provide completion of project in time is to provide completion of every separate work on a project in time. It is widespread persuasion that induces managers to give an excessive value completion of every separate work on a project in accordance with a chart. Investigation is that performers set too high estimations of time, necessary for implementation of works, for securing of possibility of their completion in time. But at the same time, they try to complete these works not before time as compared to their exaggerated estimations, with that they were not compelled to abbreviate the planned burn-time in subsequent projects. All these «machinations» result in a vicious circle, to growingly stretching projects, although reliability of implementation of the planned terms of works does not rise here.
Thus, based on above stated it is possible to conclude that for the decision of the examined problem on the method of Critical Chain greater part of spare time of every individual work is taken off and placed in the critical points of aggregate of works on a project: in points going down of critical chain and feed-in it not-critical chainlets, and also directly pithily, preceding handing over of the project. As the accumulated defense of all chain on the whole much more effective, than defense of every work on separateness, only the half of temporal supply, withdrawn from individual works, is used for defense of critical points of chart of project realization. A remain can be used for more early completion of project. At the traditional going near planning and management motion of projects, if the supply of time, stopped up a performer in every separate work, appeared not claimed, it is lost forever – and can not be used subsequent works, if for their completion may need more time, than it was planned. The method of Critical Chain in many cases allows using earlier undoubtedly “lost time”.
For the conclusion I want to say that the author in his book Critical Chain proved that the method of Critical Chain is spared by more attention providing of availability of critical resources in moment when they are required for concrete work (smoothing of resources). A critical chain, actually, is not that other, both longest sequence of works in a project, which simultaneously takes into account both intercommunications of consistently executable interdependent works and connections with resources. We will mark that the sequence of dependent works is reflected in the traditional method of management projects “The Critical way” only. In my opinion Goldratt described all important aspects of project management in the body of his book and I can recommend it for all managers who want to be successful in chosen area of activity.
Work cited:
Goldratt, Eliyahu. Critical Chain. North River Press, 1997.
Leave a Reply
You must be logged in to post a comment.