Authors: Guria, Aparna¹; Mondal, Shyamal Kumar¹; Guria, Chandan²; Maiti, Manoranjan¹

Source: International Journal of Operational Research, Volume 15, Number 4, October 2012 , pp. 424-447(24)

Publisher: Inderscience Publishers

Abstract:

For the first time, this study introduces the concept of inventory model involving permissible delay in payment with fully-backlogged shortage and without allowable shortage for an existing petrol/diesel retailing station. For this, crude oil price-dependent pricing model is developed to forecast the unit selling price of petrol/diesel, an important input parameter for the inventory model. Analytical solutions are obtained for all the inventory problems studied to minimise the total annual variable cost. Economic order quantities (EOQs) are compared with the actual operating values in an existing retailing station. Analysis shows that a higher EOQ is required to run the existing retailing station optimally, and the delay in payment, particularly with fully-backlogged shortage is advantageous for settling the accounts for the retailer over without allowable shortage. It is also preferred to keep more diesel inventory than petrol inventory in the sense that one can earn more sales revenue during the credit period. Finally, sensitivity analyses are also carried out for the several input model parameters.

Keywords: SCIENCE, ENGINEERING AND TECHNOLOGY; Materials and Manufacturing; MANAGEMENT AND BUSINESS; Operational Management and Marketing

Document Type: Research article

DOI: http://dx.doi.org/10.1504/IJOR.2012.050150

Affiliations: 1: Department of Applied Mathematics with Oceanology and Computer Programming, Vidyasagar University, Paschim Midnapore 721 102, West Bengal, India 2: Department of Petroleum Engineering, Indian School of Mines, Dhanbad 826 004, Jharkhand, India

Publication date: 2012-10-01

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