scholarly journals Multi-Echelon Inventory Allocation of Civil Aircraft Spare Parts Considering Maintenance Ratio

2018 ◽  
Vol 36 (3) ◽  
pp. 582-589 ◽  
Author(s):  
Yunwen Feng ◽  
Cheng Lu ◽  
Xiaofeng Xue ◽  
Yuchang Liu
Keyword(s):  
Spare Parts ◽  
Analysis Method ◽  
Marginal Analysis ◽  
Allocation Model ◽  
Inventory Optimization ◽  
Civil Aircraft ◽  
Reasonable Cost ◽  
Inventory Allocation ◽  
The Cost ◽  
The Mathematical Model

A multi-echelon inventory allocation technique with maintenance ratio for civil aircraft spare parts was proposed in this paper. Multi-echelon inventory allocation model was established, which integrates maintenance rate into METRIC (Multi-echelon technique for recoverable item control) model, and then marginal analysis method was applied to solve this model and accomplish multi-echelon inventory allocation of spare parts. Firstly, the theory of multi-echelon inventory allocation model with maintenance ratio was elaborated, and the mathematical model was established with the fleet availability as the optimization objective, the cost and the safeguard probability as the constraints. Secondly, the procedure of solving multi-echelon inventory allocation model considering the influence of maintenance ratio is discussed based on the marginal analysis method. Thirdly, landing gear LRU (Line repairable units) of a typical civil aircraft were selected as the research object, multi-echelon inventory allocation was investigated by considering maintenance ratio. The analysis results show that the minimum safeguard cost and fleet availability are respectively 2759833 dollars and 0.9806, and the number of LRU of multi echelon inventory allocation are obtained under the condition of satisfying the constrained optimization. The feasibility and effectiveness of the developed method are verified by comparing the traditional analysis method. This paper provides guidance for the accurate allocation of multi echelon inventory optimization for maintenance resources on the premise of reasonable cost reduction.

A Risk Based Methodology for Spare Parts Inventory Optimisation

2008 ◽  
Author(s):  
Ujjwal R. Bharadwaj ◽  
Vadim V. Silberschmidt ◽  
John B. Wintle ◽  
Julian B. Speck
Keyword(s):  
Inventory Management ◽  
Optimal Level ◽  
Risk Profile ◽  
Spare Parts ◽  
Inventory Level ◽  
Machine Availability ◽  
Inventory Optimization ◽  
Spare Parts Inventory ◽  
Current Context ◽  
Capital Intensive

Spare parts inventories assist maintenance staff to keep equipment in operating condition. Thus the inventory level of spares has a direct bearing on machine availability, a factor that is increasingly important in capital-intensive industries. This paper presents a risk based approach for spare parts inventory optimization. At the outset, the paper highlights the unique features of maintenance inventories, such as spare parts inventories, compared to other inventories such as work-in-progress or finished product inventories. After a brief mention of the principles on which many of the current inventory management models are based and their limitations, the paper presents a risk-based methodology to spares inventory management. ‘Risk’ in the current context is the risk in monetary terms that arises when a component (spare) is not available on demand. It is the expected value of loss, i.e., the product of the likelihood of unavailability of the spare from the inventory and an estimate of the consequence(s) of that unavailability. Given a budgetary constraint and the risk profile of a number of spares, the model gives an optimal inventory of spares. By basing the inventory on the risk profile of spares, the model includes factors that are not normally considered in various other models. The ultimate aim of the methodology is to have an optimal level of spares inventory such that machine availability, to the extent it is dependent on the level of spares inventory, is maximized subject to constraints. The methodology is expected to benefit both, operational and financial managers.

scholarly journals IbM Pelatihan, Pembinaan dan Pendampingan Penggunaan Aplikasi Management Stock Control

2021 ◽  
Vol 1 (1) ◽  
pp. 9-16
Author(s):  
Muhammad Wali ◽  
Ismail ◽  
Taufiq Iqbal ◽  
Jhony Syafwandhinata
Keyword(s):  
Spare Parts ◽  
Planning System ◽  
Web Based ◽  
Stock Control ◽  
Business Partners ◽  
Inventory Optimization ◽  
Management Application ◽  
Service Activity ◽  
Training Activities ◽  
Control Management

The purpose of this service activity is to provide Training, Coaching, and Assistance for Stock Control Management Applications and it is hoped that the participants can; 1) Understand the strategy for the supply of goods, 2) Understand and be able to control spare parts, 3) Be able to provide the goods needed in the remodeling process, 4) Be able to manage spare parts efficiently and be able to apply methods Determine the level of reordering and minimum inventory for inventory optimization, and 5) Evaluating the material planning system that has been running so that we can find out the core of the problems faced and how to solve them. The method of implementing the program to be carried out is; 1) Presentation, 2) Experience Sharing Discussion, 3) Training (Training for Users), and 4) Further assistance in the use of the application. This Community Service Implementation Activity was held for 4 (four) months from early December 2019 to the end of March 2020. This activity was attended by all personnel of Gober Indo's local business partners. Based on the results of the activities that have been carried out, several conclusions can be drawn, namely; 1) The development of a web-based Stock Control Management application has been successfully built, 2) Assistance and training activities for the use of the appropriate Stock Control Management Application and can help partners, 3) Service activities that are followed very enthusiastically, It can be seen that many members and owners have attended the training, and 4) Supporting activities for the Stock Control Management Application are expected to continue with the development of partner business finances.

scholarly journals A review of spare parts supply chain management

2019 ◽  
Vol 3 (2) ◽  
pp. 67
Author(s):  
Zineb Achetoui ◽  
Charif Mabrouki ◽  
Ahmed Mousrij
Keyword(s):  
Supply Chain ◽  
Supply Chain Management ◽  
Spare Parts ◽  
Classification Methods ◽  
Chain Management ◽  
Demand Fulfillment ◽  
Inventory Optimization ◽  
Forecasting Methods ◽  
Spare Parts Management ◽  
Organizational Maturity

The particular characteristics of spare parts have prompted several authors to provide substantial results for effective spare parts supply chain management. In this context, the purpose of this paper is to present the significant contributions that researchers have proposed, over time, for the management of spare parts supply chain. The literature has shown that the particular characteristics of spare parts have a significant impact on inventory performance and customer demand fulfillment. For this reason, most of the contributions were focused on spare parts classification methods, forecasting methods and inventory optimization.  The focus of researchers on some areas of spare parts management allowed us to identify some promising perspectives that were not developed in literature, such as the development of performance measurement frameworks for spare parts supply chain and the measurement of organizational maturity.

MRO Spare Parts Management and Inventory Optimization

2022 ◽  
pp. 266-301
Author(s):  
Saeed Ramezani ◽  
Mohamad Reza Hoseinzadeh
Keyword(s):  
Inventory Management ◽  
Supplier Management ◽  
Spare Parts ◽  
Inventory Optimization ◽  
Inventory Management System ◽  
Spare Parts Management ◽  
System Supplier ◽  
Management Policies ◽  
Management Optimization ◽  
Comprehensive Framework

In this chapter, considering the importance of spare parts inventory management in the equipment life cycle, the excellence models in spare parts supply chain management are reviewed, and MRO-MMM framework based on the MMM maintenance excellence model will be presented in eight steps. In this comprehensive framework, all necessary actions are considered in terms of maintenance excellence, improvement, and optimization spare parts management. The steps include compiling strategies, spare parts management policies, and related indicators; determining criticality, classification, and spare parts data management; data and procedure preparation for analysis of inventory management; optimization of inventory management system; supplier management; integrity of automation and information system; continuous improvement; and risk based and smarting inventory management. This framework has been used in various industries and proved that the implementation of the MRO-MMM framework will optimize and significantly improve spare parts management.

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