Hi,
You should not treat Corrective and Preventive actions seperately. Let me explain you with a live example from one of the companies I am consulting with.
The problem was that the Ball bearing application failed because of non application of the grease on the bearing. This was a customer compliant. 4.14 should be implemented in the following steps:
1. Immediate corrective action should be taken so that the customer will not get any bearing without grease. Eg: 100% inspection for grease application at the end of the line before packing. This is Corrective action. This alone will not solve the problem. This is like taking a headache tablet immediately when you get an headache.
2. You have to go into your Process
FMEA and find out where the problem lies in your company because of which the grease has not been applied. For eg: The
PFMEA tells that one of the potential causes of the problem is that there was an air block in the grease dispenser. Now the action you take like automatically stopping the line when the air block occurs in the grease dispenser is a Preventive action. This action will prevent further problems from occuring.This is like going to a doctor, finding the causes of headache and permenantly solving the problem without any recurrence.
3. You have to extend this preventive actions as a system. Eg: you have to install this system in all Grease dispensing machines, even though the problem has occurred in only one grease dispensing machines.