Risk Evaluation of RoHS Components - A Case Study of Network Product Company

• Main Authors: Yi-Chu Chan, 詹益竺
• Other Authors: Hsin Rau
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/95n6vr

碩士 === 中原大學 === 工業與系統工程研究所 === 103 === Green Supply Chain Management System has been established in domestic related electronic industries currently upon the requests of EU RoHS and other environmental regulations. Thus, products and materials are all made on the basis of these green regulations. What we need to reflect is how to make whole operations more effective and prevent resources of companies from being wasted by blind operation methods. Risk evaluation of RoHS components discussed in this research is expected to develop an evaluation model to improve the risk categorization methods of RoHS materials in the case-discussed company and also hope to provide mechanisms of constructing evaluation on the material risks for reference with related industries. The structure and criteria of evaluation on material risks are developed on the basis of the risk evaluation concepts of FMEA. Moreover, the risk factors of FMEA are set up per what the case-discussed company faces and the two indexes, vendors’ RoHS documentation management and X-ray fluorescence (XRF) inspection data, are regarded as references of evaluations on risk factors. Material risks of vendors can be separated into three risk factors: severity, occurrence and detection. They are distinguished by conformity-proved documents from vendors, results with Pb, Hg and Cd inspected by XRF instruments, and results with Cr and Br inspected by XRF instruments, respectively. From these three factors, we can calculate risk priority number (RPN) of materials. Based on this model of risk evaluation, the case-discussed company can filter out high risky materials more effectively, and perform risk improvement on such materials. However, the material risk level is more reliable on the proposed model than that on the previous material risk categorization method. The risks of many material categories are also found to be lowered obviously and frequencies and time on RoHS inspection also decrease substantially.