Design Engineering

Functional safety activities are most effective by integration into a well-established and proven quality management system.

Design Engineering


Functional safety activities are most effective by integration into a well-established and proven quality management system. Functional safety requirements should increase the rigour of the design engineering of a product, software element or system and be traceable to the appropriate standard e.g. IEC 61508 and IEC 61511.


How To Show Functional Safety Compliance


The following are typical documents required to demonstrate functional safety compliance:

– Functional safety plan;

– Process Hazard Analysis (PHA);

– Determination of Safety Integrity Level (SIL);

– Safety Requirement Specification;

– Verification and validation plans;

– Functional Design Specification (FDS);

– Software Design Specification (SDS);

– SIL Verification;

– Factory Acceptance Testing (FAT) / Site Acceptance Testing (SAT);

– Proof test procedures;

– Functional safety assessment;

– Operations and maintenance manual;

– Safety manual;

– Defect, non-conformance and demand reporting.




What inputs are required by FSES in order to conduct the Study?

Depending on the exact requirements of the study, the documentation will change. Upon award of contract FSES will provide the client with a list of the required inputs in order to conduct the study.

Will there be a Workshop?

If there is insufficient documentation available, a workshop may be required. The requirements for a workshop will also be dependent on the scope of work required by the client. This will be discussed with the client prior to award of contract.

What is the expected output of the Study?

On award of the study FSES will review the documentation available and identify any shortfalls against the appropriate standards (i.e. IEC 61508 and IEC 61511). If required, a workshop will be facilitated, whereby the required information will be extracted from the relevant personnel in order to demonstrate compliance.

FSES will prepare a report describing the scope of work, a detailed methodology, along with all the requirements of the appropriate standards outlined and the relevant evidences documented to show compliance.

If part of the scope of work, FSES will also produce the required relevant procedures, processes, template documents and deliver training as required in order to show functional safety compliance.


 Why FSES?


FSES consultants have considerable experience in all of the above activities and can provide assistance in demonstrating functional safety compliance. This can be carried out for a single project or assistance can be given to create procedures, processes, template documents and deliver any required training to allow a company to demonstrate functional safety as a core competence.

For more information, or to discuss your needs for reviewing the design engineering, please contact us using the form below or email [email protected] .

Our Services at FSES

Compliance to the international Standards such as IEC 61508 and IEC 61511 are imperative to meeting the Functional Safety requirements for many processes and have formed part of the quality management systems of many companies. Provision of Functional Safety Services in line with the Phases and Activities detailed in the Safety Life-cycle is an area in which our consultants are able to demonstrated experience and expertise.

Learn more about our services

PHA, HAZID and HAZOP Studies

FSES can provide Process Hazard Analysis (PHA) and HAZard and OPerability (HAZOP) study chairpersons. Our expert PHA facilitators hold certification in conducing HAZOP, HAZAN and CHAZOP.

Functional Safety Training

FSES provide various Functional Training services for all of specific parts of IEC 61508 and its sector derivatives

Consequence Modelling

Discharge and Dispersion is often required to evaluate the consequence of identified hazardous events.

Design Engineering

Functional safety activities are most effective by integration into a well-established and proven quality management system.

Building Risk Assessment

Building Risk Assessment (BRA) is a tool used to assess the risks to people in occupied buildings in the facility.

Escape, Evacuation and Rescue Analysis

Escape, Evacuation and Rescue Analysis ensures that the design of a facility is such that the risk to personnel is kept to within the ALARP region.

Functional Safety Assessment

Independent Management of Functional Safety Assessments, Audits & Support.

Functional Safety Lifecycle and Management

Functional Safety Lifecycle and Management is a key requirement demonstrating how Functional Safety is to be implemented and achieved.

Human Factors

Human factor assessment is a key area in identifying potential hazards which may be instigated by human errors.

Legacy Systems

Legacy Systems Review and Compliance.

Prior Use

Prior Use Assessment.

Proof Testing Procedures

Proof Testing is one of the main requirements to ensure that Functional Safety is maintained throughout the operational phase.

Operation and Maintenance

FSES can carry out review studies and provide consultancy to ensure Functional Safety requirements are maintained during Operation and Maintenance.

Quantitative Risk Assessment

Quantitative of Risk in terms of IRPA, PLL and graphical demonstrations such as FN Plots.

Reliability, Availability and Maintainability Study (RAMS)

Reliability, Availability and Maintainability Study (RAMS) is used as a decision making tool to increase the availability of the system, and thus increase the overall profit as well as reducing the life cycle costs.

Safety Requirements Specification

The Safety Requirements Specification (SRS) is a core document, which is used as the main reference to be followed by designers, installers, and operators of a Safety Instrumented Function (SIF).

SIL Determination

FSES are able to us various methods in identifying SIL targets; qualitatively by Risk Graphs, semi-quantitatively by Layers of Protection Analysis (LOPA) or fully quantitatively by Fault Tree Analysis (FTA).

SIL Verification

Calculation of Random Hardware Reliability and Architectural Assessments for Safety Instrumented Functions (SIFs)

SIS Conceptual Design

Safety Instrumented System (SIS) Conceptual Design