quality control

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Quality Control

The processes a company or organization uses to test products to ensure that they are not defective. Quality control operatives may investigate the procedures used to make a product, the knowledge of employees or even intangibles like company morale. Quality control is distinguished from quality assurance in that quality control tests for errors while quality assurance seeks to put in place systems to ensure that the errors do not happen in the first place. See also: Quality.

quality control

the task of ensuring that the QUALITY of a product or service meets specified performance criteria. Quality control involves a number of activities, in particular:
  1. interpretation of PRODUCT SPECIFICATIONS;
  2. INSPECTION of products at each stage of production, including SAMPLING procedures to select items for testing and the use of testing equipment to check the performance of components or products and detect those that are defective. The results of such tests enable production operations to be modified quickly, for example by changing machine settings, to prevent further defectives being made and thereby saving on rectification costs or the later processing costs of items which would eventually have to be scrapped;
  3. cooperation with design, marketing, production and research and development over improvements in product quality;
  4. undertaking periodic quality audits to review the effectiveness of quality control procedures. See TOTAL QUALITY MANAGEMENT, PRODUCTION CONTROL, QUALITY ASSURANCE, FISHBONE CHART, QUALITY CIRCLE, SCRAP, CONTROL CHART, FAILURE COSTS, NORMAL CURVE, SAMPLING, ACCEPTANCE SAMPLING, CONTROL COSTS, LOT TOLERANCE PERCENTAGE DEFECTIVE, QUALITY FUNCTION DEPLOYMENT, QUALITY LOSS FUNCTION.

quality control

a discipline concerned with improving the QUALITY of goods and services produced. The object of quality control is to prevent faulty components or finished goods from being produced, and it uses a variety of devices to help achieve this aim. Techniques of statistical sampling and testing can be used to identify faulty materials and products. Statistical variability limits can be used to ensure, for example, that machines are continuing to hold their tolerances in producing goods. QUALITY CIRCLES can be employed to involve work-groups in the task of quality assurance by generating discussion about the cause of quality problems and how workers themselves can deal with such problems. See also PRODUCTIVITY, PRODUCT PERFORMANCE, PRODUCT DIFFERENTIATION.
References in periodicals archive ?
Whereas, the latter is more concerned with the frequency and effort involved in doing things, the quality controller focuses more on the process of doing things well.
The Date Palm Development Institute, when established, may among other things, start diploma courses for date graders, date quality controllers, date quality inspectors and date food technologists in collaboration with Sindh Board of Technical Education.
The printer's crisp image is controlled by the new picture quality controller, integrated into the printer's electronic controls.
Today we hear that quality should be built into our processes - the concern of every employee, not just the quality controller with the "Approved" stamp.
The North American market (comprising United States and Canada) is further analyzed by the following Segments: Variable Compensation Equipment - Variable Series Compensation (Thyristor Controlled Series Capacitor (TCSC), & Static Synchronous Series Compensator (SSSC)), Variable Shunt Compensation (Static Synchronous Compensator (STATCOM), Static Var Compensator (SVC), & Synchronous Condenser (SC)), Variable Power Flow Controllers (Unified Power Flow Controller (UPFC), Unified Power Quality Controller (UPQC), & Phase Shifting Transformer (PST)); and Fixed Compensation Equipment - Fixed Shunt Capacitors, Fixed Shunt Reactors, & Fixed Shunt Reactors.
These are the masters and workmen, production manager%s methods of production and disposition, maintainers, developers, quality controller and auditors production, warehouse operators and other THP.
Quality controller Drew said: "We went to Ibiza basically to have fun because Garry John and his soldier mates need some proper R and R to split up the tension of their time in Afghanistan.
qc Audio Quality Controller, and the LQ-1000 Loudness Quality Monitor.
Gavin Lee, right, who works as a quality controller at JenningsFord's Yarm Road dealership in Stockton, will race in a modified 1984 Ford Fiesta XR2 as he gears up for his seventh consecutive championship year.
Mr Vaughan was said to have given two cheques totalling pounds 680 to Emma Griffith, Cymad's quality controller, for overtime, but filled in stubs falsely claiming the pounds 180 cheque was for food.
He was employed as a quality controller for the former Bay State Abrasives for 41 years, retiring in 1978.

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