title: Modelling safety of gantry crane operations using Petri nets.
abstract: Being a powerful tool in modelling industrial and service operations, Petri net (PN) has been extremely used in different domains, but its application in safety study is limited. In this study, we model the gantry crane operations used for industrial activities using generalized stochastic PNs. The complete cycle of operations of the gantry crane is split into three parts namely inspection and loading, movement of load, and unloading of load. PN models are developed for all three parts and the whole system as well. The developed PN models have captured the safety issues through reachability tree. The hazardous states are identified and how they ultimately lead to some unwanted accidents is demonstrated. The possibility of falling of load and failure of hook, sling, attachment and hoist rope are identified. Possible suggestions based on the study are presented for redesign of the system. For example, mechanical stoppage of operations in case of loosely connected load, and warning system for use of wrong buttons is tested using modified models.
authors.affiliation: a Department of Industrial and Systems Engineering, Indian Institute of Technology , Kharagpur , India.
authors.forename: Karmveer
authors.initials: K
authors.lastname: Singh
authors.affiliation: a Department of Industrial and Systems Engineering, Indian Institute of Technology , Kharagpur , India.
authors.forename: Navneet
authors.initials: N
authors.lastname: Raj
authors.affiliation: b ITR Chandipur, DRDO , Balasore , India.
authors.forename: S K
authors.initials: SK
authors.lastname: Sahu
authors.affiliation: b ITR Chandipur, DRDO , Balasore , India.
authors.forename: R K
authors.initials: RK
authors.lastname: Behera
authors.affiliation: a Department of Industrial and Systems Engineering, Indian Institute of Technology , Kharagpur , India.
authors.forename: Sobhan
authors.initials: S
authors.lastname: Sarkar
authors.affiliation: a Department of Industrial and Systems Engineering, Indian Institute of Technology , Kharagpur , India.
authors.forename: J
authors.initials: J
authors.lastname: Maiti
mesh_terms: D060389:Construction Industry / Q000379:methods; D006801:Humans; D008962:Models, Theoretical; D016272:Occupational Health
keywords: gantry crane operations; hazardous states; petri nets; reachability tree; safety actions