Papers by Keyword: Conformity Assessment

Abstract: A new conformity criterion for concrete strength assessment that could be used at the initial production stage, is proposed. As an innovative conformity criterion was evaluated based on Order Statistics Theory, it is independent from the type probability density function (PDF) in population, estimation of the standard deviation, shape of the specimen and the level of autocorrelation of the test results. Proposed criterion was evaluated and positively verified both AOQL-concept using Monte Carlo simulation and the test results obtained under real production.

Abstract: Measurement uncertainty has important economic consequences for calibration and inspection activities and is often taken as an indication of the quality of a test laboratory. Smaller uncertainty values are generally of higher value. In industry decision rules employed in accepting and rejecting products are based on the measurement uncertainty budget of the related characteristics of the products. Conformity assessment based on the product specification and the measurement evaluation is an important part of the industrial quality assurance of manufactured products and for the stability of production processes. The aim of this paper is to describe the relationship between the conformance zone and the acceptance zone and to address the problem of determining acceptance limits that define the boundaries of the acceptance zone.

Abstract: The national metrology, standards and conformity assessment system in Ukraine is still largely based on the state-controlled Soviet system and differ significantly in form and function from the national standards and conformity assessment systems (or the national quality infrastructure) found in countries of the European Union and of the OECD. While in the latter group of countries the vast majority of national standards are of a voluntary nature and the national quality infrastructure operates as a highly-decentralized network of public and private institutions, the Ukrainian model emphasizes technical regulations (or mandatory standards) and is dominated by highly-centralized government institutions. Recent accession of Ukraine into WTO and commitment for integration into the European Union (EU) motivated an assessment of its national quality infrastructure (metrology, standards and conformity assessment). The importance of metrology and metrology policy development is discussed to support the regulatory environment. The paper discusses main findings of the assessment developed in cooperation between the World Bank and the IFC Ukraine Business Enabling Environment Project.