Saturday, May 4, 2013

Corrective Preventive 'Defect Repair'

Corrective Actions
Corrective actions are taken when the project has deviated from the planned scope, schedule, cost, or quality requirements. Corrective actions are reactive in nature and are intended to bring the project’s performance back into alignment with the agreed-upon project baselines.

Corrective Action is a future response to the defect repair process or the correction, so that the cause of error or non-conformity will not occur again. For example let us say that during the inspection you find some defective component, and you corrected the defective component. Now, you don’t want this defect to happen again. Therefore, you will look into root cause of the problem, find a solution, and apply it to your operations so that the defects do not not occur again.
In other words, you can say that the Corrective Actions are the steps taken to correct the root problem and stop the recurrence of deviation.
Corrective Action is a reactive process and it is performed to bring the deviation under control.


Preventive Actions
Preventive actions are taken when the project is trending away or based on lesson's learned one knows that it could trend away from the planned scope, schedule, cost, or quality requirements. Preventive actions are proactive in nature, based on a variance and trend analysis of the ongoing project or from the lessons learned.
Preventive actions are intended to ensure the project is delivered in alignment with the agreed-upon project baselines.
Preventive Action is an action that is taken to avoid any anticipated future defects that may appear in the component. For example, let us say that you are going to start production of some component. Before starting the production process, you think that some defects may appear on the component. Therefore, you review your processes and procedures and make some changes (if needed) so that the cause of anticipated defects could be prevented.
Preventive Action is a proactive process.
Please note that there is a difference between Corrective Action and Preventive Action. In corrective action, a problem has occurred and you try to make sure that this problem should not recur.
On the other hand, in preventive action, a problem has not yet occurred. You simply take some measures so that any problem should not occur.
In other words, you can say that the preventive action is a process of identification of the most likely cause of any potential non-conformity in order to prevent it from initially occurring.
Preventive Actions are performed to ensure that there should not be any deviation from the baselines.


Defect Repairs
Defect repairs are implemented when the product or deliverable does not meet the documented quality requirements.

Example
Corrective Actions You are building a vacation log cabin for Mr. and Mrs. Johnson. You had originally planned to use a small backhoe for the excavation. Once excavation begins, you realize that the small backhoe is not sufficient and you are now behind schedule. Bringing in a larger backhoe would be a corrective action.

Preventive Actions As you evaluate the costs to trim out the inside of the house, you determine that based on the cost trending, you could go over budget. As such, you substitute lower-cost interior doors to prevent exceeding the budget. This is a preventive action.

Defect Repairs Upon preliminary inspection of the bathroom fixtures, you find that the hot and cold water are reversed. You ask your plumber to fix the plumbing. This is a defect repair.

The larger backhoe, substitute doors, and plumbing fix would not affect the project baselines as you will want to track the variances and document the causes. Generally speaking, the associated costs with these actions would be the responsibility of the performing project organization.

Now if Mr. and Mrs. Johnson opted to have a spa installed on the outside patio and that wasn’t in the original requirements, that would be a scope change and the baselines would need to be updated. Mr. and Mrs. Johnson would be responsible for the costs associated with the spa.



Example 2:
Athlete hurt the feet and started bleeding while running bare feet.
Defect Repairs: Apply medicine and band aid to the stop bleeding.

Corrective Actions: Make sure rest of the tracks does not have any sharp objects which can hurt the legs.
Preventive Actions: Make all athletes to wear shoes going forward.

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