Conducting an FSA
Conducting an FSA is a mandatory activity within the IEC 61511 functional safety lifecycle that verifies whether Safety Instrumented Systems (SIS) have been designed, implemented, operated and maintained in accordance with the requirements of the standard. A Functional Safety Assessment (FSA) provides independent confirmation that the appropriate functional safety management processes have been followed before a project progresses to the next lifecycle stage.
Although many organisations still complete Functional Safety Assessments using spreadsheets, disconnected documents and manual checklists, digital Functional Safety Assessment software provides a far more consistent and auditable approach. By managing assessments electronically, organisations can standardise checklists, capture findings, assign action items and automatically generate comprehensive reports.
This guide explains the complete process for conducting an FSA, the IEC 61511 requirements, and how the MSS Functional Safety Assessment Module supports every stage of the assessment workflow.
What Is Conducting an FSA?
Conducting an FSA involves performing an independent review of the activities completed during a particular stage of the functional safety lifecycle. The assessment confirms that the required processes have been followed and that sufficient evidence exists before progressing to the next lifecycle phase.
IEC 61511 requires Functional Safety Assessments to be carried out at defined stages throughout the safety lifecycle. Each assessment evaluates documentation, engineering activities, procedures and evidence before determining whether the project satisfies the applicable requirements.
A typical Functional Safety Assessment includes:
- Reviewing lifecycle documentation.
- Assessing compliance with IEC 61511.
- Recording observations and findings.
- Identifying non-conformances.
- Creating corrective action items.
- Producing an auditable final report.
Unlike audits, which often focus on management systems, Functional Safety Assessments concentrate specifically on demonstrating compliance with the functional safety lifecycle.
If you are unfamiliar with the purpose of Functional Safety Assessments, see our Functional Safety Assessment (FSA) guide.
IEC 61511 Requirements for Conducting an FSA
IEC 61511 specifies that Functional Safety Assessments must be performed by personnel who are appropriately competent and sufficiently independent from the work being assessed.
The standard requires the assessment team to verify that:
- Required lifecycle activities have been completed.
- Mandatory documentation exists.
- Functional safety procedures have been followed.
- Safety requirements have been satisfied.
- Outstanding issues have been identified and managed.
Depending on the lifecycle stage, an FSA may examine activities including hazard and risk assessment, Safety Requirements Specifications (SRS), detailed design, installation, commissioning, operation and maintenance.
Many organisations standardise their assessment process using predefined checklists to ensure every assessment is completed consistently and repeatably.
For additional guidance on the IEC 61511 lifecycle, see our IEC 61511 guide.
Creating a New Functional Safety Assessment
Conducting an FSA begins by creating a new Functional Safety Assessment within the project. In MSS SLM, assessments can be created at either the Unit level or the SIS level, depending on the scope of the review.
Creating a new assessment typically involves:
- Selecting the appropriate Unit or SIS.
- Creating a new Functional Safety Assessment.
- Selecting one or more IEC 61511 lifecycle stages.
- Choosing whether a self-assessment will be completed.
- Saving the new assessment.
SLM automatically loads the correct assessment checklists based on the selected lifecycle stage, eliminating the need to manually prepare assessment documentation.
Because lifecycle stages can be modified later, assessment teams retain the flexibility to expand the assessment scope as projects evolve.
The software also allows one Functional Safety Assessment to cover multiple lifecycle stages where appropriate, simplifying project administration while maintaining full traceability.
Preparing the Functional Safety Assessment
Before formally beginning the review, the assessment team records the key information required to manage the Functional Safety Assessment.
This preparation typically includes:
- Assessment workflow information.
- Lifecycle stage selection.
- Background and objectives.
- General project information.
- Assessment participants.
- Independent assessor details.
- Company document references.
Participants may be selected directly from existing SLM personnel records or entered manually where required.
The Workflow tab allows lifecycle stages and self-assessment options to be updated throughout the assessment, ensuring the documentation always reflects the current scope of work.
This structured approach helps ensure every Functional Safety Assessment follows a consistent methodology while remaining fully compliant with organisational procedures.
Recording FSA Checklists
Conducting an FSA relies on structured checklists that guide the assessment team through each requirement of the selected IEC 61511 lifecycle stage.
When an assessment is created, SLM automatically loads the appropriate checklist based on the selected stage or stages.
For each checklist item, the assessment team records:
- Compliance findings.
- Comments and observations.
- Verification status.
- Conformance Assessment Score (CAS).
- Date of verification.
If a self-assessment has been completed, those findings are displayed alongside the independent assessment, allowing the team to compare site responses with their own conclusions.
Where deficiencies are identified, action items can be created directly from individual checklist questions, ensuring every finding remains fully traceable throughout the assessment process.
Recording Additional Findings and Interviews
While the standard checklists cover the majority of IEC 61511 requirements, many assessments uncover additional observations that require further documentation.
SLM allows assessment teams to record:
- Additional questions.
- Interview records.
- General observations.
- Assessment findings.
- Lifecycle summaries.
Interview records capture details of personnel consulted during the assessment together with supporting notes, while additional questions allow assessors to document issues that fall outside the predefined checklist.
These features provide a complete audit trail that supports both the assessment findings and the final report.
Managing Functional Safety Action Items
Conducting an FSA often identifies improvement opportunities that require follow-up after the assessment has been completed.
Rather than tracking actions separately, SLM records action items directly against:
- Checklist findings.
- Interview records.
- Additional questions.
- General observations.
All actions are automatically consolidated into a single Action Items register where the assessment team can review, assign, update and close outstanding activities.
This centralised approach provides complete traceability from every finding through to final resolution.
To learn more about managing corrective actions, see our Corrective Action Management Software guide.
Producing the Final FSA Report
Once the assessment has been completed, SLM automatically generates the Functional Safety Assessment report using all of the information recorded throughout the workflow.
The report includes:
- Assessment scope.
- Participants.
- Checklist results.
- Additional findings.
- Interview records.
- Action items.
- Overall conclusions.
Because the report is generated automatically, assessors are not required to recreate information that has already been entered during the assessment.
Following approval, the assessment can be locked to prevent further editing while preserving a complete audit trail.
Why Use SLM for Conducting an FSA?
Conducting an FSA using Safety Lifecycle Manager provides a structured, repeatable and fully auditable assessment process aligned with IEC 61511.
Key capabilities include:
- Guided assessment workflow.
- Automatic IEC 61511 stage checklists.
- Optional self-assessments.
- Participant management.
- Integrated action tracking.
- Automatic report generation.
- Approval workflow.
- Complete audit trail.
By replacing spreadsheets and disconnected documents with a single digital workflow, organisations can improve consistency, reduce administration and demonstrate compliance more effectively.
Learn more about the MSS Functional Safety Assessment Module and how it supports every stage of the Functional Safety Assessment process.
Related Functional Safety Resources
- Functional Safety Assessment (FSA)
- Functional Safety Management Software
- IEC 61511 Explained
- Safety Integrity Levels (SIL) Explained
- Corrective Action Management Software
