Abstract
The paper provides a multiple-experts Fuzzy-TOPSIS decision-making model for the selection among maintenance contractors based on the quality of tendering documents. The study introduces a set of selection criteria utilizing benefit and cost criteria from literature. The proposed model aggregates subjective linguistic assessments of multiple experts that express their opinions on the degree of importance of criteria and allows multiple decisionmakers to evaluate the compliance of contractors’ documents. For a case study, the model is applied to select among contractors tendering to maintain the heavy-duty cranes of an international steel company from literature. Several decision-making scenarios are investigated, and major changes in the final decision are observed. The changes in obtained results illustrate the need to better address uncertainties in rating and tendering an overqualified contractor at a higher cost.
Highlights
Maintenance plays a fundamental role in preserving the safety, quality, and productivity of service for industrial and governmental facilities
Following the process of deciding on the decision criteria that are more fit to the company among the many suggested by experts, three company DMs were elected to rate the documents of contractors against decision criteria
The paper presents a Fuzzy-TOPSIS decision-making model for selecting maintenance contractors based on the quality of submitted tender documents
Summary
Maintenance plays a fundamental role in preserving the safety, quality, and productivity of service for industrial and governmental facilities. While selecting the maintenance services, the decision-maker (DM) must primarily consider the technical abilities of the maintenance contractors in addition to several other time and financial compliance attributes to guarantee maximum safety and quality for money. The maintenance contractor selection process accounts for several technical and non-technical strategic and operational decision criteria based on the organization’s requirements such as price and payment terms, experience in similar work, ability to supply spare parts, etc. Since the adequate selection of the contractors directly influences maintenance performance, outsourcing is a crucial decision for any organization. Among the many obligations of the project owners, they should notify contractors of the process by which tenders will be considered and selected. Interested contractors must adequately address all the information required by the project owners to ensure compliance, and they must provide evidence of professional capabilities to ensure safety, quality, and timely delivery [26]
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