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The answer should be from the Engineering and Operational point of view..
Quality Assurance is the process of defining how a work will be done to achieve the desired quality and standard. This is done by defining a set of standards like Method Statements and Inspection and Test Plans.
Quality Control is checking that the work done is as per defined set of standards. This is done by Inspections.
Quality Assurance is:A set of activities for ensuring quality in the process which products are developed A process oriented and focuses on defect prevention Example is verification A managerial tool Everyone on the team involved in developing is responsible Statistical technique used for QA is Statistical Process Control (SPC) A process of managing for quality
Quality Control is :A set of activities for ensuring the quality in products. The activities focus on identifying defects in the actual products produced A product oriented and focuses on defects identification Example is validation A corrective tool The responsibility of a specific team that tests the products for defects Statistical technique used for QC is Statistical Quality Control (SQC) Verify the quality of product
Quality Assurance is all activities relating to preventive action, while quality control is all activities relating to corrective action
Quality issurance is a process oriented and focuses on defect prevention while quality control is product oriented and focuses on defect identification
Qa is to Implement the reqirment and QC is Montor for Countinual Improvment
Quality assurance mean the processes and procedures and plans that perform to make sure that the final product will be as designed
quality control mean all the ways that use to show if the product accepted or not according to specs
QA -WE GIVE ASSUR ABOUT DESIRED QUALITY WITH SOME REFERENCE
QC-MAINTAIN QUALITY WITH SOME REFERENCE
QA refer as “prevention” aims to target the process to used mange and deliver the solution. It may conduct by manager or customer or third party.
QC refer as “inspection” to verify the that deliverables are acceptable quality , to meet completeness and correctness criteria according the Q plan acceptance by the executor and client.
It can described most briefly as,
QA : is to Plan What & How to Control by QC.
QC: is to execute & feedback the results to QA.
Its a cycle for continual improvements.
The core of the Quality Assurance is the PDCA (Plan,Do,Check & Act) Deming wheel with the purpose of a continous improvement this for a continous better client satisfaction
Quality Control is a simple part of the Quality Assurance which performs within the D (Do) element of the hole PDCA with the aim to inspect & certify the client's product &/or service