25 © 2014 Conscientia Beam. All Rights Reserved. RANKING IRANIAN ACCREDITED LABORATORIES WITH PROFICIENCY TESTS USING PR0METHEE METHOD Mousa Amini 1 --- Alireza Alinezhad 2 --- Hamid Najafabadiha 3 1 MSc graduate of industrial engineering (System management and productivity), Alghadir University, Tabriz, Iran 2,3 Faculty of Industrial and Mechanical Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran ABSTRACT The rapid pace of changing technology is leading to high rate of import and export between different countries. In outsourcing governmental organizations duties to private sectors, it is a need to control sectors and they should be under assessment policy. This research has been developed to show how the accredited laboratories of Iranian standard (ISIRI) can be assessed for their technical servicing using the Preference Ranking Organization Method for Enrichment Evaluations (PROMETHEE) in combination with proficiency testing inter- laboratories comparison, in order to rank them for an urgent or crucial need of testing any kind of goods or products under compulsory regulation or national standard for their quality or safety aspect. The proposed approach, therefore, allows a decision to be made with confidence that the alternative (laboratory) chosen has best performance for conformity assessment. Keywords: MADM, Proficiency testing, PROMETHEE, Preference function, Ranking, Criteria. Contribution/ Originality The paper's primary contribution is finding that implementation of a hybrid integration of PROMETHEE I, II with Proficiency Testing inter-groups comparison, provide a successful tool for ranking of those candidates. 1. INTRODUCTION Nowadays, the key issue for managers is decision making. They are always faced with choosing, selecting and ranking between different choices. In the past four decades the comparison of the laboratories effectiveness and competencies were mostly justified by argument that the experts of Reference laboratory (ISIRI) had done by their experiences and knowledge. The issue about the choice and ranking alternatives is not easy to solve. In particular, there is no Review of Industrial Engineering Letters 2014 Vol. 1, No. 1, pp. 1-20 ISSN(e): 2408-9427 ISSN(p): 2409-2169 DOI: 10.18488/journal.71/2014.1.1/71.1.25.35 © 2014 Conscientia Beam. All Rights Reserved.