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What is the difference between QC & QA?
Answer added by: SAHL HIJAZI CONTRACTS & PURCHASING SENIOR SUPERVISOR 1 year agoI would like first to emphasis the important of Quality control enviroment in any Organization, in addition such Methodology and standards will enhance & raise-up reputation & BRAND of any Organization: Quality Assurance: A set of activities designed to ensure that the development and/or maintenance process is adequate to ensure a system will meet its objectives.
Quality Control: A set of activities designed to evaluate a developed work product.
Testing: The process of executing a system with the intent of finding defects.
(Note that the "process of executing a system" includes test planning prior to the execution of the test cases.) QA activities ensure that the process is defined and appropriate.
Methodology and standards development are examples of QA activities.
A QA review would focus on the process elements of a project e.g., are requirements being defined at the proper level of detail.
In contrast, QC activities focus on finding defects in specific deliverables - e.g., are the defined requirements the right requirements.
Testing is one example of a QC activity, but there are others such as inspections.
Answer added by: Pia Boutros Quality Manager 1 year agoQA vs QC is always an issue in our industries..
to summarize QA is proactive and QC is reactive meaning that QC aims to identify defects in the finished product, in the bulk before releasing and in the rm when received but the QA should preset a system to follow in which to prevent to have any defect.
QC find and alert on a specific problem, the QC should investigate, assess, improve and rework the process to prevent repetition of any problem.
Answer added by: Zubeir Patel Shift Lead Engineer 11 months ago
Quality control: Inspection methods and test equipment used to verify output of a production process. The data is valuable as it provides indication of short and longer term process capability as part of a statistical process control programme. It also provided valuable data post implementation of a change to determine impact and effectiveness.
Quality Assurance: Set of procudures, systmes and processes designed to guarantee a process to give the required outputs as per the product specification. This means that there is no requirement to test the output of the process. Eventually after gaining sufficient data from quality control of processes you can implement QA systems / processes as you will be in a position to determine the neccessary controls based on data and impact of changing certain parameter etc. This is the desired state any company would want to be in and ultimately drives down the cost of quality / poor quality.
Answer added by: darrell peebles Senior Manager for Quality 1 year ago
There is no short answer that will comprehensively address this basic question, or man y of these questions. Volumes have been written, but Mr. Sahl Huazi has the best answer. Mr. Ezzat, this is a critical question for true quality followers. While you mange a few good points, it is not your strength.
Here is a short answer that may enlighten us all;
QC means "controlling" aspects of production and processing such that the methods and procedures meant to "Assure" quality are invoked and maintained. Control seeks defects, Assurance seeks non-conformities, but both of these are after the fact. Before the events, quality planning requires that controls are identified and assurances are established and these are done as a team, but all insure "Quality" So QA and QC are both required as part of the planning, and the execution(doing, taking action, and checking)
Answer added by: Bushra Ahmed QA/QC 1 year agoQA/QC associated in one no dismantling between them because one of them if not maintained the other is useless. QA program shall be built up to proactive the organisation and product. QC is tracking progrgram for confirmation tthe organization and product has been moved as per required
Answer added by: nomanuddin khwaja QA/QC Inspector 1 year ago
QC is one who inspect the practically and restrict all other employees to follow quality
But QA is mainly concerned about Quality Assuarance providing evidence to consultant or employer in form of documents that contractors or subcontractors are following the QC policy
Answer added by: Nohman Ishfaq 1 year ago
QC is product specific. It sets the standrad for GO and NOT GO to customers. It ensusres bad prodcut doesnot leave to customers. QA is process specifc, it ensures that all processes are carried out such that no bad product is produced by the system.
Answer added by: Mahmud Najjar Executive Project Manager 1 year ago
QA is a set of procedures and system based on specific standards that must be followed in the production phase to get the products or services within these standards.
QC is a set of testing tools used during the execution to correct any deviation from the desired product specifications.
Answer added by: Saumen Gangopadhyay Senior System Analyst / Project Incharge 1 year ago
QA & QC both focuses on Quality. QA aims to prevent defects and focuses on process used to make products. QC try to identify defects in the finished product. Verification is an example of QA. Validation/Software Testing is an example of QC. QA-proactive process, QC-reactive process.
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