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Quantitative Analysis of Supplier Quality Surveillance Practices in EPC Projects

机译：EPC项目中供应商质量监督实践的定量分析

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This study was funded by the Construction Industry Institute (CII) to investigate effective supplier quality practices that can reduce rework associated with supplied components in engineering-procure-construct (EPC) projects. The motivation was to analyze how the level and amplitude of inspection in different stages of a supply chain (from fabrication to mechanical completion) affect the resulting quality of products as measured by the number of nonconformances (NCs) found in its different stages. Quantitative data were collected using an instrument used by CII member organizations to submit data on actual purchase orders and analyzed using the Mann-Whitney (M-W) test on the nonparametric set of data obtained. Following the statistical analysis, interviews with subject matter experts, face-to-face presentations, and sharing of reports with the research team were used to clarify questions, interpret the data, and validate conclusions. The results provide insights regarding where inspection is most needed and indicate that some of the following supplier quality surveillance (SQS) practices are correlated with improved supplier quality: observation and inspection in the supplier's facility; development and use of a quality control or inspection and testing (QC/IT) plan; planning in concert with suppliers; increased communication before and during execution; and post-project completion assessments (PPCAs) of supplier performance. Results also showed that registered or certified suppliers do not show a statistically significant relationship to improved quality. Finally, the study contributes to explaining how process inspections are directly linked to the number of resulting product nonconformances, identifying which practices used by suppliers and owners/contractors are more effective in reducing the number of nonconformances in a product, and identifying potential indicators that can be collected during the execution of purchase orders and associated with the final quality of products. (C) 2015 American Society of Civil Engineers.
机译：这项研究由建筑工业协会（CII）资助，旨在调查有效的供应商质量实践，这些实践可以减少与工程采购，建设（EPC）项目中的供应组件相关的返工。目的是分析在供应链不同阶段（从制造到机械完成）的检查水平和幅度如何影响产品的最终质量，该质量由在不同阶段发现的不合格（NC）数量来衡量。使用CII成员组织用来提交实际采购订单数据的工具收集定量数据，并使用Mann-Whitney（M-W）检验对获得的非参数数据集进行分析。在进行统计分析之后，通过与主题专家的访谈，面对面的演讲以及与研究团队的报告共享，来澄清问题，解释数据并验证结论。结果提供了有关最需要检查的地方的见解，并表明以下一些供应商质量监督（SQS）做法与供应商质量的提高相关：在供应商设施中的观察和检查；制定和使用质量控制或检验和测试（QC / IT）计划；与供应商协调计划；在执行之前和执行期间增加沟通；以及供应商绩效的项目完成后评估（PPCA）。结果还表明，注册或认证的供应商与改善的质量没有统计学上的显着关系。最后，该研究有助于解释如何将过程检查与所产生的产品不合格数量直接联系起来，确定供应商和所有者/承包商采用的哪些做法在减少产品中不合格数量方面更有效，并确定可以消除产品不合格数量的潜在指标。在执行采购订单期间收集并与产品的最终质量相关联。 （C）2015年美国土木工程师学会。

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  • 来源
    《Journal of Construction Engineering and Management》 |2015年第11期|04015039.1-04015039.9|共9页
  • 作者

    Neuman Yoshua; Alves Thais da C. L.; Walsh Kenneth D.; Needy Kim LaScola;

  • 作者单位

    Rudolph & Sletten Inc, San Diego, CA USA;

    San Diego State Univ, JR Filanc Construct Engn & Management Program, Dept Civil Construct & Environm Engn, San Diego, CA 92182 USA;

    San Diego State Univ, JR Filanc Construct Engn & Management Program, Dept Civil Construct & Environm Engn, AGC Paul S Roel Chair Construct Engn & Management, San Diego, CA 92182 USA;

    Univ Arkansas, Grad Sch & Int Educ, Fayetteville, AR 72701 USA;

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