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Functional Safety Engineering Services Limited

Functional Safety Engineering Services (FSES) are international providers of Functional Safety Consultancy Services and Engineering Safety Consultancy Solutions in accordance with international standards IEC 61508 and IEC 61511. With experience gained working with (and as) end users, Engineering Procurement and Construction (EPC) companies and system integrators. FSES has the underpinning knowledge of Functional Safety and Engineering Safety standards and can demonstrate significant experience in the application of Functional Safety and Engineering Services; subsequently we are competent in providing practical solutions that emphasis the application of appropriate level of rigour. Our solutions and services are tried and tested, implemented by major operators in the process industry and accepted by regulating bodies including the Health and Safety Executive (HSE).

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Call us on +44 (0) 1428 333 333
Email us at [email protected]
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Head Office
Passfield Business Centre
United Kingdom
GU30 7SB


A Global Presence

FSES has a global presence with offices in the United Kingdom, Europe, Middle East and India

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.

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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


Our team of consultants at Functional Safety Engineering Services have been providing Functional Safety Services in accordance with the Safety Lifecycle detailed in the international standards IEC 61508 and IEC 61511 to a wide range of industries.

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Consultants' Experience

FSES consultants have worked with various EPCs and End Users on a range of projects globally. Be sure to read more about our projects and clients by clicking the link below.

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A Global Presence

FSES has a global presence with offices in the United Kingdom, Europe, Middle East and India