IFAC PapersOnLine 51-11 (2018) 968–973 ScienceDirect Available online at www.sciencedirect.com 2405-8963 © 2018, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved. Peer review under responsibility of International Federation of Automatic Control. 10.1016/j.ifacol.2018.08.482 © 2018, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved. 1. INTRODUCTION Traditionally, the literature on Spare Parts (SPs) has been focused on both understanding the behavior of parts and developing techniques to properly manage them. According to literature and practitioners, managing SPs tends to be substantially different to other items (e.g., productive supplies, raw materials, commodities), due to the specific features that characterize their behavior (Huiskonen, 2001; Cavalieri et al., 2008; Martin et al., 2010; Wagner et al., 2012). But, extending the traditional focus to other issues and decisions, it is possible to find different relationships that impact the Spare Parts Management (SPM) decision process. Amon others, Supply Chain (SC) issues have been typically excluded from the analysis or assumed as given and fixed (Huiskonen, 2001; Wagner, et al., 2002, Martin, et al., 2010) in the viewpoint of industrial end-user sites (i.e., those that needs spare parts for the assets installed in their sites). A relevant concern that must be considered into SPM is the underlying Supply Chain Network (SCN) that supports the SPs operations (e.g., transportation, inventories, warehousing). This paper analyzes the relevance of integrating Spare Parts Supply Chain Network (SP-SCN) design issues with traditional SPM. Optimization is focused on the SP warehouse location, consumption points assignment and inventory control decisions while minimizing the total system cost, consisting of operation and setting fixed costs, transportation costs, and inventory costs. For these purposes, it is assumed that spare part consumption points are the end of the SCN (i.e., assets in the industrial plant located at the end-user site associated with production activities that consume SP for replacements purposes when facing preventive maintenance activities or failure events). One of the focuses of this paper is to establish and discuss some general relationships among SPM, SP Inventory Management, SCN and the underlying design problem. Additionally, this paper presents a generic single-commodity modeling structure to optimize the SP-SCN that considers simultaneously warehouse location and inventory control decisions. This structure aids to focus on the relevant issues that affect and must be considered on the specific models. In general, it is possible to address two relevant sets of decisions, one set related to the SCN design decisions and other set related to the Inventory Control Policies (ICPs) considered for managing the SP inventories across the SP- SCN. Naturally, the specific models, derived from the generic model, may consider different network structures and diverse suitable ICPs. Particularly, the basic structure considered into the generic optimization model is consistent with the standard and widely studied Facility Location Problems (FLPs) structure. Subsequently, three ICPs commonly adopted into SPs context are considered to specify the generic model, yielding three particular network optimization models. Notice that, these models belong to the family of Inventory Location Problems (ILPs) since they integrate warehouse location and inventory control decisions and costs (Erlebacher and Meller, 2000; Daskin, et al., 2002; Miranda and Garrido, 2004). Finally, a further discussion is made going deeper into the relationships between the mathematical models, the SPM and the SP-SCN. Consequently, a research agenda is presented considering different features that can be integrated into the mathematical models. Keywords: Spare Parts Management; Supply Chain Network Design; Supply Chain Management; Network Optimization; Inventory Control; Inventory Location Problem Abstract: Traditional literature on Spare Parts Management from industrial end-user sites has not focused on the underlying Supply Chain Network. Thus, this paper analyzes the relevance of integrating Supply Chain Network design with traditional Spare Parts Management. With this aim, the paper proposes a network optimization modeling structure, with simultaneous decisions for warehouse locations and inventory control, allowing to optimize the Spare Parts Supply Chain Network costs.The model is specified for three traditional and commonly used Inventory Control Policies suitable for a variety of Spare Parts (i.e., (s, Q), (R, s, S) and (S-1, S)). The proposed integrated approach yields Spare Parts Supply Chain system performance improvements. *Politecnico di Milano, Milano, 20156 MI, Italy (e-mail: franciscojavier.tapia@polimi.it, irene.roda@polimi.it, marco.macchi@polimi.it). **Pontificia Universidad Católica de Valparaíso, Valparaíso, 2340025, Chile (e-mail: pablo.miranda@pucv.cl, orlando.duran@pucv.cl). *** University of Portsmouth, Portsmouth, PO1 3DE UK, United Kingdom, Visiting Researcher Tapia-Ubeda, Francisco, J.* , ** Miranda, Pablo, A.** , *** Roda, Irene* Macchi, Marco* Durán, Orlando** An Inventory-Location Modeling Structure for Spare Parts Supply Chain Network Design Problems in Industrial End-User Sites