Risk evaluation for AGA LNG terminal

AGA Gas LNG terminal by Jan Arrhenborg CC

In 2011, Sweden's first Liquid Natural Gas (LNG) terminal went into operation. Located in Nynäshamn on the eastern coast of the country, the terminal delivers LNG to the Nynäs Refinery, the Fortum natural gas distribution net in Stockholm and other industrial customers.

From the outset of the project, owner AGA Gas performed extensive risk management work in close cooperation with Lloyd's Register Consulting. Environmental court proceedings and other permit-related processes involving the authorities went smoothly and the construction of the terminal opened without delay on May 27, 2011.

The terminal stores 20,000m3 of LNG – or enough to heat 150,000 houses – which is delivered for onshore commercial and domestic use.

It is paramount to understand the importance of evaluating and documenting risk to third parties. Very few people like having large-scale industrial facilities in close proximity, and will often emphasise the potentially high risk these represent in arguments against construction. Even when not required by law, we always recommend early involvement and open discussions with neighbours and all stakeholders on issues relating to risk and risk mitigation, to avoid problems in later phases. We also carried out the quantitative risk analysis for design improvement purposes, which was part of the new project’s final safety report.

Services in more detail

Early phase - Location studies

  • Overall qualitative and quantitative risk analyses
  • If needed, additional CFD consequence calculations
  • Identification of need for risk management activities for permit processes and documents
  • Establishment of HSE plan and hazard log
  • Establishment of risk acceptance criteria for the project
  • Start-up of project risk analysis
  • Different permit related safety activities and presentations for the authorities

Risk analyses during concept study

  • Qualitative and quantitative risk analyses of preliminary design, including HAZOP
  • If needed, analysis of different technical design solutions
  • If needed, additional CFD consequence calculations
  • Transport risk analysis
  • Different permit related safety activities and presentations for the authorities
  • Follow-up of hazard log and HSE plan
  • Follow-up of project risk analysis

Risk analysis of final design

  • Final version of qualitative and quantative risk analyses, incl. HAZOP and domino effects
  • If needed, additional CFD consequence calculations
  • Final version of safety report
  • SIL analysis of safety critical equipment
  • Work environment studies
  • Site inspections during construction
  • Emergency analysis and establishment of emergency plan and safety instructions
  • Follow-up/closing of hazard log and HSE plan
  • Follow-up/closing of project risk analysis

Photo by Jan Arrhénborg, © AGA, CC by 3.0

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