Abstract
Hidden Time Loss (HTL) occurs along the production processes that have a big implication on productivity. Overall Equipment Efficiency (OEE) is one of the most popular performance measurement tool used in the production line. The HTL has been provided by quality as one of the measure components of OEE. However, OEE doesn’t really suitable in measuring operation performance of assembly processes mainly in the semi-auto assembly and the manual assembly processes. There would be the amount of HTL have occurred along the semi-auto assembly and manual assembly processes that become crucial when to achieve high product variety at the same production assembly line. Therefore, the purpose of this paper is to introduce the Non-conformance Time (NCT) as one of the part of Hidden Time Loss Measures (HTLM) in assembly processes. Literature study on manufacturing assembly processes had been used to derive the structure of NCT. Then, two selected automotive manufacturing companies had been used as a case studies in order to validate the NCT structure. Based on semi-auto and manual assembly processes, the results show that the NCT is one of the parts of HTLM.
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