Quality Control Vs Quality Assurance – Difference Between QC and QA


Quality Control Vs Quality Assurance – Difference Between QC and QA

Definition Of Quality Control and Quality Assurance 

What is Quality?

Quality is meeting the requirement, expectation, and needs of the customer being free from defects, lacks and substantial variants. There are standards needs to follow to satisfy the customer requirements.

What is Quality Control?

  • Quality control is that “part of quality management focused on fulfilling quality requirements.”
  • Quality Control is known as QC and focuses on identifying defect. QC ensures that the approaches, techniques, methods and processes are designed in the project are following correctly. QC activities monitor and verify that the project deliverables meet the defined quality standards.
  • Quality Control is a reactive process and is detection in nature.. It recognizes the defects. Quality Control has to complete after Quality Assurance.

What is Quality Assurance?

Quality assurance consists of that “part of quality management focused on providing confidence that quality requirements will be fulfilled.” The confidence provided by quality assurance is twofold—internally to management and externally to customers, government agencies, regulators, certifiers, and third parties.

Quality Assurance (QA) is the set of activities (including facilitation, training, measurement and analysis) needed to provide adequate confidence that processes are established and continuously improved in order to produce products or services that conform to requirements and are fit for use.

Assurance is provided by organization management, it means giving a positive declaration on a product which obtains confidence for the outcome. It gives a security that the product will work without any glitches as per the expectations or requests.

is known as QA and focuses on preventing defect. Quality Assurance ensures that the approaches, techniques, methods and processes are designed for the projects are implemented correctly. Quality assurance activities monitor and verify that the processes used to manage and create the deliverables have been followed and are operative.

Quality Assurance is a proactive process and is Prevention in nature. It recognizes flaws in the process. Quality Assurance has to complete before Quality Control.

qc vs qa
qc vs qa

Difference between quality assurance and quality control

Quality ControlQuality Assurance
QC is a process which deliberates on fulfilling the quality request.Quality Assurance is the process which deliberate on providing assurance that quality request will be achieved.
quality control takes place after the final product is produced.Quality Assurance is pro-active which is just opposite of the Quality Control because quality assurance takes place at the time of development of the product
It's a Corrective techniqueIt's a Preventive technique
QC confirms that the standards are followed while working on the productIn order to meet the customer requirements QA defines standards and methodologies
QC ensures that whatever we have done is as per the requirement, and that is why it falls under validation activityQA ensures that everything is executed in the right way, and that is why it falls under verification activity
It requires involvement of Testing team
It requires involvement of the whole team
Statistical technique applied on QC is known as SQC or Statistical Quality ControlStatistical technique applied on QA is known as SPC or Statistical Process Control (SPC)

Sachin Thorat

Sachin is a B-TECH graduate in Mechanical Engineering from a reputed Engineering college. Currently, he is working in the sheet metal industry as a designer. Additionally, he has interested in Product Design, Animation, and Project design. He also likes to write articles related to the mechanical engineering field and tries to motivate other mechanical engineering students by his innovative project ideas, design, models and videos.

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