Pengurangan Work In Process Inventory di Stasiun Kerja Bottleneck Menggunakan Pendekatan Theory Of Constraint (TOC)

Abstract

Pustaka Setia is a company engaged in publishing and printing books. The obstacle experienced by CV Pustaka Setia is the occurrence of accumulation (Work In Process inventory) at the folding work station. The buildup that occurs has resulted in the company not achieving the production target that has been set within a predetermined time limit. The problems faced by this company are solved by using theapproach Theory of Constraint (TOC). Thestage TOC carried out by identifying the constraint in the company by calculating the capacity, this is because the constraint contained in the company is a capacity constraint. The stages are continued with constraint exploitation using a linear program to find out the maximum number of companies producing books with the company's capacity.scheduling is Campbell dudeck and smith (CDS)done by changing the transfer system to abatch processequal to the transfer batch, in order to reduce stacking. The stage is continued on subordination of non-sources constraint by making print work stations able to maximize work stations that experience buildup and is carried out using themethod Drum Buffer Rope (DBR). Based on data processing until it reaches the stage of subordination, the stacking constraint still occurs, then the constraint elevation is carried out. The constraint elevation was carried out by adding the capacity of the folding work station to 3 work shifts and subcontracting 1815 copies of the book at the folding work station so that the company was able to reduce the buildup and meet existing needs.