Functional Safety

You may require a Process Hazard Assessment (PHA), HAZOP or SIL Assessment


You may require assistance with IEC61511 compliance


Let us help

We have Certified Functional Safety Engineer and TÜV Functional Safety Engineer expertise.

The Chalfonts Consultancy was established in 1997 and has been specialising in Functional Safety since 2007.

Frequently asked questions within Functional Safety


What is PHA?

Process Hazard Analysis (PHA) is a methodology to identify potential hazards, consequences and likelihoods for a given process.

Functional Safety

What SIL assessment

Also known as SIL classification, The demand scenario frequency and the severity of the consequences for a hazardous event are used to establish the Safety Integrity Level.

Functional Safety, SIL

What is functional safety?

Functional safety is the part of the overall safety of plant and equipment that depends on the correct functioning of safety-related systems and other risk reduction measures such as safety instrumented systems (SIS), alarm systems and basic process control systems (BPCS).


What is HAZOP?

HAZOP analysis is a technique for identifying potential hazards and/or identifying operability issues for a given process.

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