1. QC & QA - Quality Assurance and Quality Control The...

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Quality Assurance and Quality Control The terms “quality assurance” and “quality control” are often used interchangeably to refer to ways of ensuring the quality of a service or product. The terms, however, have different meanings. Assurance: The act of giving confidence, the state of being certain or the act of making certain. Quality Assurance: The planned and systematic activities implemented in a quality system so that quality requirements for a product or service will be fulfilled. Control: An evaluation to indicate needed corrective responses; the act of guiding a process in which variability is attributable to a constant system of chance causes. Quality Control: The observation techniques and activities used to fulfill requirements for quality. QUALITY ASSURANCE AND QUALITY CONTROL 1. INTRODUCTION An important goal of IPCC good practice guidance is to support the development of national greenhouse gas inventories that can be readily assessed in terms of quality and completeness. It is good practice to implement quality assurance and quality control (QA/QC) procedures in the development of national greenhouse gas inventories to accomplish this goal. This guidance establishes good practice consistent with the Revised 1996 IPCC Guidelines for National Greenhouse Gas Inventories (IPCC Guidelines). The QA/QC good practice guidance outlined here reflects practicality, acceptability, cost-effectiveness, existing experience, and the potential for application on a worldwide basis. A QA/QC programme contributes to the objectives of good practice guidance, namely to improve transparency, consistency, comparability, completeness, and confidence in national inventories of emissions estimates. The outcomes of the
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QA/QC process may result in a reassessment of inventory or source category uncertainty estimates. For example, if data quality is found to be lower than previously thought and this situation cannot be rectified in the timeframe of the current inventory, the uncertainty estimates ought to be re-evaluated. The terms ‘quality control’ and ‘quality assurance’ are often used incorrectly. The definitions of QC and QA in Box 8.1 will be used for the purposes of good practice guidance. BOX 8.1 DEFINITION OF QA/QC Quality Control (QC) is a system of routine technical activities, to measure and control the quality of the inventory as it is being developed. The QC system is designed to: (i) Provide routine and consistent checks to ensure data integrity, correctness, and completeness; (ii) Identify and address errors and omissions; (iii) Document and archive inventory material and record all QC activities. QC activities include general methods such as accuracy checks on data acquisition and calculations and the use of approved standardised procedures for emission calculations, measurements, estimating uncertainties, archiving information and reporting. Higher tier QC activities include technical reviews of source categories,
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This note was uploaded on 03/24/2012 for the course CSE 459 taught by Professor Alix during the Spring '12 term at California Baptist University.

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1. QC & QA - Quality Assurance and Quality Control The...

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