Case Study – Statoil minimises risk and optimises operations on large-scale facilities using LR’s dynamic risk model

Client: Statoil
Location: Kårstø, Norway
Asset type: Gas processing plant

Client Background

Statoil is ranked as the one of the world's largest Oil and Gas companies. Headquartered in Stavanger, Norway, and has operations in 36 countries around the world. The Statoil Kårstø processing plant is Europe's biggest export port for natural gas liquids and the third largest in the world. Kårstø issues thousands of work permits each year!

Lloyd's Register has a long history of providing risk management services to the Kårstø plant, including a major Total Risk Analysis which the current risk tool is based on.

Business challenge for the customer

Statoil Kårstø required a software tool and support to efficiently manage their operational risks. The risk of major accidents is very activity-dependent, and for this reason, traditional risk analyses with their yearly averages were not sufficient for day-to-day risk management.

Statoil wanted a tool to that automatically reads the planned activities of the day and produces a presentation of the current risk picture. The tool was required to:

  • Provide decision-support for planning and approving work orders.
  • Visualise the results in a way that increases risk-awareness and helps identifying risk-reducing measures.
  • Require short setup and processing time by utilising a user-friendly interface.
  • Incorporate custom high-resolution risk models which are able to reflect the operational risks.
  • Increase confidence in the underlying models by extensive testing, calibration and support.

How Lloyd's Register helped

Using our expertise in quantitative risk analysis, technical safety, and software development we were able develop a tailor-made software solution. Together with Statoil, we have developed methods for adjusting leak frequencies, ignition probabilities, and consequences based on activity levels. Input parameters include activity type, duration, and number of personnel involved. The underlying risk analysis uses a high number of computational fluid dynamics simulations, thereby increasing the resolution of the results.

This resulting tool helped Statoil achieve their objective of optimising their operations using dynamic risk models. In addition, the tool contributes to risk-awareness by engaging the personnel in how their safety depends on proper activity planning. The risk tool is in daily use by both operational personnel and safety management.

Our results were shared throughout development with Statoil Kårstø by regular follow-up and an extensive support period. The project has also gathered interest from other technical sectors within Statoil, including human factors and offshore safety.

Expertise applied:

  • Quantitative risk analysis
  • Technical safety
  • Consequence modelling
  • Software development


Operational risk management requires the continued commitment of people throughout the organisation; from the board room to the maintenance technician on-site. In periods of change and uncertainty, ensuring good assessments of the operational risk may require particular attention. By incorporating quantified assessment tools into the daily operations, Lloyd's Register helped Statoil Kårstø engage their people and improve the safety culture. Our tool not only provides daily decision support for work planning, but also contributes to risk-awareness and can be further developed for training purpose customised to the actual asset, ensuring that the operational personnel are seamlessly engaged in how their safety depends on proper activity planning.

Our tool ensures that cost-reductions are achieved through consistent and reliable results within automated work flows, allowing for instant results, with no need for manual data-entry or time-consuming calculations.


  • Risk reductions – Better and clearer decision support, and increased risk-awareness
  • Cost reductions – Less time spent on assessments and manual data-entry
  • Increased flexibility – Robust high-resolution models that may allow for more simultaneous activities, without compromising safety
  • Simplifies the daily risk evaluation of planned activities



"Top score on all counts! We are very satisfied with the final product and its documentation. The partnership with Lloyd's Register in this project has been exemplary throughout the process"


"We are very happy with the tool, it is of considerable help for risk management and approval of work orders. The functionality 'calculate risk contribution per work order' is particularly useful."

"Simplifies the daily risk evaluation of planned activities"