PT Pertamina Lubricant unit has the largest lubricants production units that PUG (Production Unit
Gresik). As part of the manufacturing industry often experience problems on PUG electoral system and
assessment of supplier. Inaccuracies in selecting supplier results the selected supplier failed to deliver an
order continually. One of the solutions of this problem is to improve the supplier selection system.
Therefore, this research aims to develop supplier selection model with involves the Pertamina Oil Centre
and PUG. An earlier stage of the research is to determine the criteria and subcriteria of the supplier
selection obtained through Questionnaires I. The second stage was composing the hierarchy of the
problem that was found in the company. The third stage was composing Questionnaires II wich
translating AHP scale into triangular fuzzy number. The fourth stage aggregated appraisement of the
whole of the respondents. The fifth stage calculated the value of the degree of possibility. The final stage
calculated the value of consistency ratio from the opinion of the decision makers. After criteria and sub
criteria of the selection and assessment suppliers has been developed. Then it used to choice the supplier
of industrial lubricant drum. This research resulted eight criteria selection and assessment of supplier
quality criteria, price, delivery, service, innovation, safety and working environment, flexibility,
organization with a total combined all the criteria as much as sub criteria 29 sub criteria. The highest
weighting is quality’s criteria (1.00), while the highest one is claims replacement good’s subcriteria
(1.00). The results from supplier assessment indicated that the supplier Y was the chosen supplier.
Keywords: Suppliers, Selection Criteria, Group decision Analitycal Hierarchy Process, Fuzzy Triangular
Number, Extent Analysis
