Speakers

  Joel Tumwebaze

Joel Tumwebaze

HSE Officer

Health Safety and Environment (HSE); Directorate of Petroleum, Ministry of Energy and Mineral Development, Uganda

Joel Tumwebaze is a Health Safety and Environment (HSE) Officer at the Directorate of Petroleum, Ministry of Energy and Mineral Development, Uganda. He has 5 years of industry experience as a Safety Engineer monitoring HSE compliance of oil and gas operations in Uganda. Prior to joining the oil industry, Joel served as a standards officer with the Uganda National Bureau of Standards for a period of 4 years. Joel has an MSc in Safety and Reliability Engineering from the University of Aberdeen. He has attained certifications such as the HSE Superintendent from the French Petroleum Institute and the National Examination Board for Occupational Health and Safety (NEBOSH) International Technical Certificate in Oil and Gas Operational Safety. He is a member of SPE.


ABSTRACT

Session 35: Safety for Design Approach in Locating and Sitting an Onshore Oil and Gas Processing Facility

J. Tumwebaze & J. Kobusheshe

Safety in design is a fundamental approach that integrates hazard identification and risk assessment early in a lifecycle to eliminate or minimise risks to employees and public, environment, assets and company reputation during the project life cycle. It encompasses all aspects of the project such as facility siting, plant layout and configuration, process design, materials, products, equipment, energy among others. Investigations into many incidents in the oil and gas sector have repeatedly shown that the root causes or escalation of severity of consequences are as result of deficiencies in the design.

This paper aims to develop a safety for design approach of an onshore oil and gas processing facility. The potential of constructing such a facility attracts businesses and settlements in close proximity to tap economic benefits of having personnel during a project lifecycle. This requires creation of an exclusion zone which has to be an area of interest during the project lifecycle. The operating company must liaise with the local community and government to ensure there are is restriction on establishment of permanent infrastructure, settlements and any other activities that may compromise public safety in this area. The boundaries of this area must be determined by risk assessment based on specific accident scenarios. This analysis focuses on facility siting of the proposed facility based on hazard identification and risk assessment. Consequence analysis is used in facility siting evaluation to determine the exclusion zone around the boundaries of the proposed facility.

The Area of Location of Hazardous Atmospheres (ALOHA) software will be used in consequence analysis to model a gas leak from a high pressure process piping. Hazards considered are flash fire, toxic gas release and vapour cloud explosion. The boundary is determined based on threshold effects of these hazards at a specific distance from the gas leak. An analysis of hazards considered in consequence modelling computes the distance of the exclusion zone from the process piping. The restricted area, where plant operations are under strict control of the operating company is defined. The impacted area around facility is evaluated by analyzing effects of incidents and ensuring that personal are not permanently located within this specific zone of interest.