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What are QA and QC? Let's discuss it!

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I don't know how anybody can think that Quality Checks can operate independent or as a separate action to Quality Assurance. Irrespective of the field of use. Quality Checks are one of the many sub-branches that spread from the Management System or Quality Assurance.

I disagree with the foundation of the video. QC's confirm the status of QA. It sounds to me that the use of quality checks in the video refer to repetitive 'clean ups' or 'checks' which in itself is understandable, I would however say that these actions (quality checks) are rather pre-determined compliance specifications and maintenance actions that falls within some of the various QA actions.

Quality Checks are not there to remove unwanted problems, it serves as an action to either give you a green, orange or red light with regards to the quality of your management system (QA). QA offers the policies and procedures to measure, in addition to the accepted tolerance and action steps necessary to take.

The purpose behind Quality Assurance is continuous improvement; to have a strong management system; to not repeat the same mistakes; to stream-line maintenance and to improve on product/service delivery and customer service.
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The QA program must therefore be fully independent. ... Appendix A gives examples of activities during the process and of the way QC and QA can be handled. It is up to the organization to make a difference between facility- or process-based inspections and study-related inspection on e.g. the study preparation items.
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Quality control can be defined as "part of quality management focused on fulfilling quality requirements." While quality assurance relates to how a process is performed or how a product is made, quality control is more the inspection aspect of quality management.
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Yes QA & AC are different from one another but so many people confuse about it, let me explain breifly:


QC: Part of Quality Management focused on fulfilling quality requirements. it is a set of activites for ensuring quality in products. the activities focus on identifying defects in the actual products produced. its aim to identify defects in the finished product quality control, therefor it is a reactive process. the goal is to identify defects after a product is developed and before its released.


Finding and eliminating sources of quality problems through tools & equipment so that customer's requirment are continually met.


The activities or techniques used to achieve and maintain the product quality, process and service.


Quality control usually the responsibility of a specific team that tests the product for defects.


Validation/Software Testing is Example.


QA: Part of Quality Management focused on providing confidence that quality requirements will be fulfilled. it is a set of activity of ensuring quality in the processes by which products are developed. its aim to prevent defects with a focus on the process used to make the product. it is a proactive quality process. the goal is to improve development and test processes so that defects do not arise when the product is being developed. 


it will established a good quality management system and the assessment of its adequacy. periodic conformance audits of operations of the system.


Prevention of quality program through planned and systematic activities including documentations.


Everyone of the team involved in developing the products is responsible for quality assurance.


Verification is an example.

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QA (Quality Assurance) and QC (Quality Control) are related but distinct processes. QA focuses on preventing defects, while QC focuses on detecting and correcting defects. Both are essential for ensuring quality products or services.
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