Formulation and Solution Mohadeseh (Massi) Rahbar - - PowerPoint PPT Presentation

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Formulation and Solution Mohadeseh (Massi) Rahbar - - PowerPoint PPT Presentation

Oct 07, 2023 360 likes •567 views

Risk Assessment Framework for the Rail Transport of Hazardous Materials Formulation and Solution Mohadeseh (Massi) Rahbar M.rahbar@uq.edu.au Morteza Bagheri 1 Outline Introduction Research Objectives Proposed Model Proposed

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Risk Assessment Framework for the Rail Transport of Hazardous Materials Formulation and Solution

1

Mohadeseh (Massi) Rahbar

M.rahbar@uq.edu.au

Morteza Bagheri

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Outline

  • Introduction
  • Research Objectives
  • Proposed Model
  • Proposed Solution Method
  • Case Study
  • Conclusions & Recommendations

2

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Introduction

1200 144 104

Number of Rail Accidents, 2015 Transportation Safety Board of Canada

Rail Accident Dangerous Goods Derailments

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4

North Dakota December 30, 2013

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Quebec, Canada July 6, 2013

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  • Ways of addressing this concern:
  • 1. improvement of track infrastructure

and rolling stocks

  • 2. prevention of HAZMAT involvement

cars in an accident

  • 3. reducing the rate of HAZMAT release
  • 4. reducing the severity of HAZMAT

release

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Introduction

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  • Developing an integrated risk assessment

framework

  • Applying the proposed model to a case study

corridor

  • Comparing the case study findings to previous

study results

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Research Objectives

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Restrictions

λ = A B C D E F A 0 1 1 1 B 1 1 1 C 1 1 1 D 0 1 E 1 1 1 1 F The cars equipped with a source of ignition, a mechanical heating source or cooling device The cars with non-HAZMAT

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Proposed Model

  • Objective function

Minimizing the HAZMAT derailment risk

  • Constraints

Guarantee that each car would be located in

  • ne position of its block

Guarantee that each position of a block would be occupied by one car which belongs to this block

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Proposed Model

  • Constraints

Prevent locating any HAZMAT car next to

  • perating engine

Kept separate HAZMAT cars from one another and the cars which belong to group E, based on matrix λ.

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Yard Operation Cost Constraint

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Guarantees that the rail yard train assembly costs for each HAZMAT placement strategy should be less than the maximum time which is announced by the yard master Yard Operation Cost Constraint

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The Proposed Solution Method

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Case Study

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Results of the Proposed Method

Lable Tmax(min) OptimalObjectiveValue (×10-6) Time(s) NumberOfConstraint (8) CKA0 150 1390 ‒ ‒ CKA 220 1086 107 1086 2 11 KCA 600 1223 400 1223 120 396 CAK 610 1054 460 1054 40 206 ACK 830 1177 660 1177 540 1058 KAC 900 1091 660 1091 600 1086 AKC 800 1127 630 1127 1140 1526 ‒ =not applicable

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The Best Results in the Literature

Lable Tmax(min) OptimalObjectiveValue (×10-6) Time (s) CKA0 142 1658 ‒ CKA 182 1106 788 KCA 225 1248 436 CAK 184 1082 524 ACK 195 1239 460 KAC 234 1122 866 AKC 227 1176 579 ‒ =not applicable

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Conclusions

  • Proposing a new closed-form mixed integer

programming model with yard operation cost constraint

  • Proposing a two stage solution procedure
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Recommendations

  • Considering consequence in the calculation of

risk value

  • Combining routing problems with the proposed

risk minimization model

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Thank You