Our core service areas


SIL and Reliability

  • SIS Lifecycle Management

  • Functional Safety Management Plan (FSMP)

  • SIL Assessment and Allocation

  • Layers of Protection Analysis (LOPA)

  • Safety Requirements Specification (SRS)

  • SIL Verification Assessment

  • Functional Safety Assessment (FSA)

  • Failure Mode and Effects Analysis (FMEA)

  • Fault Tree Modelling

  • Periodic Reliability Assessment (PRA)

  • Reliability, Availability and Maintainability (RAM)


technical safety and risk

  • Technical Safety Engineering

  • Escape, Evacuation and Rescue Analysis

  • Fire and Explosion Strategy (FES)

  • Safety Case

  • Quantitative Risk Assessments (QRA)

  • Qualitative Risk Analysis

  • Hazard Identification (HAZID)

  • Consequence Modelling

  • Firewater Optimization Studies

  • Process Safety Studies

  • Hazard and Operability Studies

  • Safe Operations (SAFOP)

  • Simultaneous Operations (SIMOPS)


barrier and integrity management

  • Barrier analysis

  • Development of Barrier Strategy

  • Implementation of Barrier Management Systems

  • Barrier Management Audits

  • Integrated (Barrier) Design Reviews

  • Bow-tie Analysis

  • Safety (and Environmental) Critical Elements

  • Performance standards

  • Optimziation of test intervals

  • Risk-based Maintenance

Highly specialized risk and safety advisory

Since its foundation, ORS has been involved in hundreds of projects around the world. Our clients typically include asset-owners, engineering- and construction companies or system suppliers. We perform specialist studies, independent 3rd party verifications or contract subject matter experts. Our engagement varies from providing specific studies to delivering full-package risk- and safety services for complex industrial development projects. Few examples are:

  • Delivery of full-package risk- and safety services for an offshore field development project in Mediterranean Sea. (including deliverables related to HAZID, HAZOP, SIL, dropped object studies, EERA, dispersion studies, RAM analysis, active/passive fire protection studies, ENVID etc.)

  • Barrier- and Integrity Management support for numerous subsea tie-back projects, primarily in Norwegian Continental Shelf (NCS).

  • Long-term production assurance/RAM specialist support for a regional gas transportation network operator

  • Functional Safety and SIL Support for multiple asset / facility development projects in Norway, Denmark, Sweden, USA, Australia, Angola, Mexico, Singapore etc.

  • Contracting Technical Safety- and HSE resources for development projects- and operational support in multiple industries (petrochemicals, petroleum, offshore fish-farming, carbon-capture)

  • Facilitation of specialist workshops (HAZID, HAZOP, FMECA, WHAT-IF, SAFOP, SIMOPS etc.) globally

  • Extensive risk- and safety studies involving design- and operations of subsea blowout preventers (BOP)