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Using pipeline information in a multi-echelon spare parts inventory system - a time limited backorder model

Marklund, Johan LU ; Howard, Christian LU ; Reijnen, Ingrid and Tan, Tarkan (2010) In Beta Working Paper series 330 p.1-31
Abstract
Motivated by collaboration with a global spare parts service provider, we consider a two-echelon inventory system with multiple local warehouses, a so-called support warehouse, and a central warehouse with ample capacity. In case of stock-outs, the local warehouses can receive emergency shipments from the support warehouse or the central warehouse at an extra cost. The focus is on using information on orders in the replenishment pipeline, i.e. pipeline information, to achieve cost efficient policies for requesting emergency shipments. We introduce a policy where the request for an emergency shipment is based on the time until an outstanding order will reach the stock point considered. The Goal is to determine how long one should wait for... (More)
Motivated by collaboration with a global spare parts service provider, we consider a two-echelon inventory system with multiple local warehouses, a so-called support warehouse, and a central warehouse with ample capacity. In case of stock-outs, the local warehouses can receive emergency shipments from the support warehouse or the central warehouse at an extra cost. The focus is on using information on orders in the replenishment pipeline, i.e. pipeline information, to achieve cost efficient policies for requesting emergency shipments. We introduce a policy where the request for an emergency shipment is based on the time until an outstanding order will reach the stock point considered. The Goal is to determine how long one should wait for stock in the replenishment pipeline, before requesting an emergency shipment, and the cost effects of using pipeline information in this manner. In our analysis we utilize results from queuing theory and provide a decomposition technique that reduces a complex multi-echelon problem to more manageable single-echelon problems. Our results indicate that there is a significant benefit in using pipeline information. Based on data provided by the case company, we illustrate that the relative cost increase of ignoring pipeline information can be as high as 106%. (Less)
Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Working paper/Preprint
publication status
published
subject
keywords
Emergency shipments, Inventory, Multi - echelon, Pipeline information, Spare parts
in
Beta Working Paper series 330
issue
WP 330
pages
31 pages
language
English
LU publication?
yes
id
7692da6b-5f72-4d38-b7d6-a281a1db9356 (old id 2019128)
alternative location
https://pure.tue.nl/ws/files/2934091/691405.pdf
date added to LUP
2016-04-04 13:01:03
date last changed
2019-01-18 11:51:35
@misc{7692da6b-5f72-4d38-b7d6-a281a1db9356,
  abstract     = {{Motivated by collaboration with a global spare parts service provider, we consider a two-echelon inventory system with multiple local warehouses, a so-called support warehouse, and a central warehouse with ample capacity. In case of stock-outs, the local warehouses can receive emergency shipments from the support warehouse or the central warehouse at an extra cost. The focus is on using information on orders in the replenishment pipeline, i.e. pipeline information, to achieve cost efficient policies for requesting emergency shipments. We introduce a policy where the request for an emergency shipment is based on the time until an outstanding order will reach the stock point considered. The Goal is to determine how long one should wait for stock in the replenishment pipeline, before requesting an emergency shipment, and the cost effects of using pipeline information in this manner. In our analysis we utilize results from queuing theory and provide a decomposition technique that reduces a complex multi-echelon problem to more manageable single-echelon problems. Our results indicate that there is a significant benefit in using pipeline information. Based on data provided by the case company, we illustrate that the relative cost increase of ignoring pipeline information can be as high as 106%.}},
  author       = {{Marklund, Johan and Howard, Christian and Reijnen, Ingrid and Tan, Tarkan}},
  keywords     = {{Emergency shipments; Inventory; Multi - echelon; Pipeline information; Spare parts}},
  language     = {{eng}},
  note         = {{Working Paper}},
  number       = {{WP 330}},
  pages        = {{1--31}},
  series       = {{Beta Working Paper series 330}},
  title        = {{Using pipeline information in a multi-echelon spare parts inventory system - a time limited backorder model}},
  url          = {{https://pure.tue.nl/ws/files/2934091/691405.pdf}},
  year         = {{2010}},
}