An extended HEART Dempster–Shafer evidence theory approach to assess human reliability for the gas freeing process on chemical tankers

Sukru Ilke Sezer*, Emre Akyuz, Ozcan Arslan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

Human reliability assessment is vital for most critical shipboard operations such as cargo loading, discharging, purging, gas freeing, etc. on chemical tanker ships since the nature of these processes poses significant threats. There are few human reliability studies particularly applied to shipboard operations in the maritime industry. To remedy this gap, the paper assesses human reliability systematically during the gas freeing process on a chemical tanker ship. To achieve this purpose, an extended HEART D-S (Dempster–Shafer) evidence theory approach is utilised. Although HEART (Human Error Assessment and Reduction Technique) presents a practical human reliability assessment tool, it heavily relies on the judgment of a single rater during APOE (assess proportion of effect). The paper adopts D-S evidence theory to remedy the aforementioned gap since it fuses raters’ opinions. The first novelty of the proposed hybrid method is the use of customized task analysis for shipboard applications within a second-generation HEART D-S evidence method in the maritime industry. Besides its theoretical background, the paper provides practical contributions to maritime safety professionals, chemical tanker ship owners, and safety inspectors to enhance their operational safety and to minimize the probability of human error during the gas freeing process on board chemical tanker ships.

Original languageEnglish
Article number108275
JournalReliability Engineering and System Safety
Volume220
DOIs
Publication statusPublished - Apr 2022

Bibliographical note

Publisher Copyright:
© 2021

Keywords

  • Chemical tanker
  • D-S evidence theory
  • Gas freeing process
  • Human reliability

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