Evaluation and comparative compare PTW system performance in an offshore oil platform

Subject Areas : Water and Environment

Hossein Mirderikvand ¹ ( MSc HSE Management, Department of Environmental and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran. Safety Expert National Iranian Oil Company )
Parvin Nassiri ² ( PHD, School of Public Health, University of Medical Sciences, Tehran, Iran )
Nabiollah Mansouri ³ ( PHD, Department of Environmental and Energy, Islamic Azad University, Tehran Science and Research, Iran )

Received: 2011-04-20 Accepted : 2011-11-11 Published : 2011-12-22

Keywords: Permit to Work System, Risk Assessment, audit and performance evaluati,

Abstract :

Introduction: Permit to Work (PTW) is a documented system in order to provide Written Instructions and Formally agreement to the personnel carrying out the hazardous job, or a defined job in a hazardous environment, or both. PTW is necessary to safeguard personnel doing the work, safeguard others on the Installation, safeguard the Installation and the environment and comply with Company Standards; therefore, performance evaluation of PTW System to identify weaknesses and improve its function is important. The main objective of the present study is evaluation and comparative compare PTW System performance in an offshore oil platform. Method and Materials: In this study, PTW system Audit performed in the studied oil platform by SHELL’S Company check lists (Level 4/3/2 Audits). Quality results obtained from checklists divided into six categories, then In order to evaluate the studied PTW System the results of six categories above were scoring based on HSE-UK Scoring Mechanism. Results: The results from audit showednoncompliance in PTW System at the following elements: risk assessment, training for permit Signatories, supporting documents, Hazardous Area Classification, monitoring and auditing systems and updated laws and regulations. Conclusion: Acquired score average 1.5 of 5, indicated that there is a significant gap between the exiting work permit with a work permit of SHELL Oil Company. Review of the PTW System by audit checklists indicated remarkably defects in all categories including: training, qualifications, PTW forms, coordination, monitoring and isolation system; Finally PTW system in studied oil platform was in very lower level than the permit system of SHELL Oil Company. Our findings from study indicate existing PTW System not effective in risk control at offshore installations and a new PTW system must be plane that contained the correction actions in the above categories.

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