An integrated model for controlling project delays based on the time buffer management approach

Document Type : Industry Article

Author

Industrial Engineering Department, Payame Noor University(PNU) , P.O.BOX 19395-3697,Tehran,I.R. of IRAN-Seyyed Akbar Gholamian

Abstract

The project planning and control process is a complex task, including initial planning based on estimates and available resources, measuring progress and evaluating current programs, and undertaking corrective actions after the disruption. Disruptions in projects often occur due to the occurrence of random changes during the execution of activities. In this research, a model is developed to monitor the performance status of the critical and non-critical chains of the project in terms of buffer consumption index and also the calculation of the schedule performance index. Corrective action is required if warning signals predict possible future delays. The superiority of the method for determining the proposed precautionary reserve compared to the current and most commonly used critical chain methods for managing the project is illustrated by numerical examples and a case study. One of these advantages can be improved scheduling reliability through better allocation of buffer times and a decrease in the mean and variance of completion time delays for the output of the proposed method compared to other commonly used critical chain approaches. A robust project control model is based on integrating time management (critical chain) management and indicators of value management approach. The amount of precautionary consumption in critical and non-hazardous chains was investigated and analyzed. The results of the project management based on time-saving management showed that non-hazardous project chains also exacerbate the likelihood of delays if their precautionary consumption levels are at critical points.

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References

 
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Journal of Modeling in Engineering
Volume 16, Issue 55
December 2018
Pages 1-18

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History

  • Receive Date: 27 August 2017
  • Revise Date: 18 February 2018
  • Accept Date: 04 March 2018

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