Functional Safety Assessments

Functional safety support for safety-critical systems.

ExConform has extensive experience in functional safety, the application of both IEC 61508 and IEC 61511, and associated machinery safety standards such as ISO 13849-1. From hazard identification and SIL or PL determination, to Safety Requirement Specifications, verification and validation, ExConform can assist with any phase of the functional safety lifecycle.

ExConform symbol Functional Safety Lifecycle Support
01 Hazard Identification
02 SIL / PL Determination
03 Safety Requirement Specification
04 Verification and Validation
01

Standards-based support

Application of IEC 61508, IEC 61511 and ISO 13849-1 for process and machinery safety systems.

02

Lifecycle evidence

Support from hazard identification through to SRS, verification, validation and assessment readiness.

03

Competent assessment

Engineers with practical functional safety experience and exida Functional Safety Practitioner certification.

Complete safety function

Assessment from sensor to final element.

Functional safety depends on the complete safety function, not just one component. ExConform reviews the sensor, logic solver and final element arrangement together with the assumptions used for diagnostics, proof testing, systematic capability and failure behaviour.

We apply industry-recognised calculation methods for both SIL assessment and verification, helping clients demonstrate whether the implemented safety function meets the required risk reduction.

Sensor subsystem review
Logic solver assessment
Final element assumptions
Proof test requirements
Safety function concept Sensor · Logic · Actuator
Sensor logic actuator system concept
Functional safety lifecycle

Assistance with any phase of the functional safety lifecycle.

From early hazard review to final Functional Safety Assessment, ExConform provides practical support where safety evidence must be clear, consistent and technically justified.

01

Hazard identification and SIL / PL determination.

Identification of hazardous events and determination of the required Safety Integrity Level or Performance Level.

02

Safety Requirement Specification.

Development or review of Safety Requirement Specifications with clear functional, integrity and validation criteria.

03

Verification, validation and FSA support.

Review of calculations, evidence and validation records to support Functional Safety Assessment readiness.

Technical assessment areas

Functional Safety Assessments for process and machinery applications.

The following technical diagrams are used as diagrams, not decorative backgrounds, so the content remains clear and readable.

Risk graph for SIL and PL determination
SIL / PL determination

Determine the required risk reduction.

ExConform supports SIL determination and Performance Level determination using structured, recognised approaches that connect hazard severity, exposure, avoidance and probability to the required integrity target.

Sensor logic actuator safety function concept
Safety function architecture

Review the full safety function chain.

We assess the complete safety function architecture and the assumptions behind it, including sensor, logic solver and actuator performance, diagnostics, proof testing and final validation evidence.

Functional safety standards overview
Standards application

Apply IEC 61508, IEC 61511 and ISO 13849-1 correctly.

ExConform supports the application of functional safety standards for both process safety and machinery safety applications, including novel systems where standard templates may not be sufficient.

Functional safety standards
Standards and competence

Experience with IEC 61508, IEC 61511 and ISO 13849-1.

ExConform has completed projects on many novel applications and systems, and has assisted clients through important Functional Safety Assessments.

Because proof of competence is important to meet both standards and client requirements, our engineers are exida Functional Safety Practitioner certified.

IEC 61508 application
IEC 61511 application
ISO 13849-1 application
exida FSP certified engineers
Service scope

Focused functional safety support.

ExConform can assist with any phase of the functional safety lifecycle, from first hazard review to Functional Safety Assessment close-out.

SIL determination
Hazard identification
Application of ISO 13849-1
Application of IEC 61508 and IEC 61511
Safety Requirement Specification
Verification and validation
ExConform logo
Functional Safety Assessment consultation

Need assistance with functional safety or an upcoming assessment?

Discuss your hazard identification, SIL or PL determination, Safety Requirement Specification, IEC 61508, IEC 61511, ISO 13849-1, verification, validation or Functional Safety Assessment requirement with ExConform.

Typical topics IEC 61508 · IEC 61511 · ISO 13849-1 · SIL · PL · SRS · Verification · Validation
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