A fuzzy pert approach to evaluate plant construction project scheduling risk under uncertain resources capacity
Abstract: A plant construction
project always involves lots of activities. Precise information about the
activities duration is unfortunately unavailable due to the uncertain resources
capacity. The fuzzy program evaluation and review technique (PERT) has been
widely applied to solve the fuzzy project scheduling problem. This paper
presents an extended fuzzy PERT approach with four major improvement aspects to
support the construction project scheduling management: 1) Evaluate operation
fuzzy times based on available working volumes, resources quantity and fuzzy
capacity of resources, 2) Adopting a maximal alpha_i-level cut method to
compare the fuzzy precedent activities times to determine the reasonable
earliest starting times of each activity, 3) Using fuzzy algebra method instead
of fuzzy subtraction method to compute the fuzzy latest starting times and 4)
Developing a project scheduling risk index (PSRI) to assist the decision maker
to evaluate the project scheduling risk. Simulations experiments are conducted
and demonstrated satisfactory results.
Author: Hsian Jong Hsiau, Chun
Wei R. Lin
Journal Code: jptindustrigg090006
