Functional Safety

Process Safety studies
Process Safety Engineering
Functional Safety

Translating risk into engineered safeguards.

Functional safety ensures that identified process risks are translated into practical Safety Instrumented Functions (SIFs) and Safety Instrumented Systems (SISs). Prove Engineering supports clients throughout the IEC 61511 functional safety lifecycle, from risk assessment through implementation and validation.

How We Can Help…

Risk Assessment Support

Support during HAZOP and LOPA studies to define functional safety requirements.

SIL Determination

Determination of the required Safety Integrity Level (SIL) based on LOPA outcomes.

Safety Requirement Specifications (SRS)

Preparation of Safety Requirement Specifications for Safety Instrumented Functions.

Safety Instrumented Functions (SIF)

Definition of Safety Instrumented Functions, including trip logic, operator interaction, reset philosophy and additional actions required to bring the process to a safe state.

Cause & Effect Diagrams

Preparation of Cause & Effect diagrams that define process trips, alarms and shutdown actions for implementation within the control system.

Engineering Support

Support during the specification and selection of safety-related instrumentation, valves and final elements, working closely with instrumentation and electrical disciplines.

Testing & Validation

Support during Factory Acceptance Testing (FAT), Site Acceptance Testing (SAT) and validation activities to verify that implemented safety functions comply with the Safety Requirement Specification.

Plant Modifications

Assessment of modifications to determine their impact on existing safety functions and support for functional safety aspects during Management of Change (MOC).

Typical Deliverables

Depending on the project scope, deliverables may include:

  • Safety Requirement Specifications (SRS)
  • SIL Determination
  • Safety Instrumented Function (SIF) Descriptions
  • Cause & Effect Diagrams
  • Alarm & Shutdown Philosophy
  • Process Safety Time Calculations
  • Response Time Calculations
  • Functional Safety Input for
  • Instrument and Valve Specifications
  • FAT & SAT Support Documentation
  • Functional Safety Reviews for Plant Modifications

Certified Expertise

Prove Engineering has TÜV Rheinland certified functional safety expertise to support the implementation and validation of Safety Instrumented Systems in accordance with IEC 61511.

Andrea Favretto

Safety is Andrea's middle name. At Prove, we're convinced he reads a chapter of API 521 before going to bed and spends his weekends performing Layer of Protection Analyses. That is when he's not out on his race bike (wearing a safety helmet, of course). With more than 15 years of experience as a process engineer, Andrea has worked on everything from pilot plants in the chemical industry to large CapEx projects in the Oil & Gas sector. As if that wasn't enough, he is also a TÜV Rheinland Certified Functional Safety Engineer, because apparently process safety wasn't quite enough.