Safety Integrity Level Analysis

Our Expertise

  • IEC 61508
  • IEC 61511
  • IEC 62061
  • SIL Target Assessment
  • Safety Requirements
  • SIL Verification

Select SIL Target

Using agreed tolerable risk criteria and a SIL determination procedure, eFunctionalSafety can lead your SIL study team sessions with one of our highly experienced and senior facilitators. We can support selection by Rish Graph or Risk Matrix, Safety Layer Matrix or Layer of Protection Analysis - LoPA


Write the Safety Requirements Specification

A solid safety requirements specification is the backbone of any safety system. We have proven templates and checklists which have been tested on multiple industry projects. Our service can be as little as checking your requirements are complete, or providing support to author the full requirements specification.


SIL Verification

eFunctionalSafety has access to the know-how, software tools and equipment failure rate data that can model the hardware performance of even the most complex Safety Instrumented Function (SIF) designs. We also check for equipment systematic capability, hardware fault tolerance and calculate the PFDavg or PFH according to application requirements.

Call us now in Cambridge, UK on +44 (0)1223 653 169

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We provided SIL verification support for an entire package of turbomachinery safety functions for a well-known gas turbine supplier.

We reviewed the SIL target assessment, supported the authoring of the system and functional safety requirements specification, and provided the probability of failure calculations for every function within the gas turbine (GT).

Our comprehensive report has enabled the GT supplier to demonstrate that the required SIL targets could be met by the hardware design.

SIL verification of Gas Turbine Safety Functions

SIL Study FAQ's

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