Risk decision-making evaluation method for spare parts inventory based on differential holding cost

Abstract

The invention provides a spare parts stock risk decision evaluation method based on differentiation holding cost. The spare parts stock risk decision evaluation method comprises the following steps: respectively obtaining a demand rate factor, a penalty time factor, a risk cost factor, a unit price factor and a holding cost proportional factor of spare parts respectively; then, calculating the a stock risk decision factor of the spare parts RIndex, if the Rindex is larger than 1, at least storing one by the spare parts, if Rindex is smaller than (-)1, not storing, if the value of the Rindex is between (-)1 and (1), indicating that the risk lost cost of the spare parts and the stock holding cost of the spare parts are close, re-estimating each factor to determine the correction of the decision. According to the spare parts stock risk decision method by taking the introduced differentiation spare parts holding cost factor as a parameter, the calculation of the equipment spare parts stock risk decision is relatively accurate.

Description

technical field [0001] The present invention relates to a method for risk decision-making of spare parts inventory, more specifically, an evaluation method for evaluating the need for inventory reserves of spare parts on the basis of introducing differentiated spare parts holding costs, weighing spare parts holding costs and out-of-stock risk losses . Background technique [0002] In a process-based enterprise, a large number of equipment involves a large number of parts and components. Due to the limitation of the inventory fund quota, it is impossible for the enterprise to stock up on every kind of spare parts. Usually, the method adopted by the enterprise is based on engineering technology. Based on practical experience, choose the spare parts to reserve. The main disadvantage of this method is that it is easily disturbed by other external factors, lacks objectivity and consistency of decision-making. [0003] Large-scale foreign petrochemical companies have carried out...

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Problems solved by technology

[0005] To sum up, it is unreasonable to calculate the inventory holding cost of each spare part in the existing foreign technology by taking a specific proportion of the unit price of the spare part.

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