Safety Instrumented Functions (SIFs)

Location Online, 10:00–13:00 BST

Date 17th April 2024

Duration 2 days

Topic Safety

CPD Hours 12

Price IChemE member £800 + VAT / Non-member £1,000 + VAT

Online | In-company


This course will develop your understanding of Safety Instrumented Functions (SIFs) and how they are managed.

Many facilities use SIFs to reduce the likelihood of a hazardous event and maintain the As Low As Reasonably Practicable (ALARP) status. SIFs are generally designed and operated in conformance with IEC 61508/ IEC 61511. The codes address SIF design, selection and ongoing management in terms of a life cycle.

Learning outcomes

By the end of this course you will understand:

  • the principles of the SIF life cycle
  • how to determine the Safety Integrity Level (SIL) rating for a SIF, using both risk graphs and layer of protection analysis (LOPA)
  • how the SIL is verified
  • the ongoing management of SIFs through operation maintenance, modification and decommissioning.

Who will benefit

Anyone who would like to develop a broad understanding of SIFs and how they are managed, especially technical and process safety specialists.

Previous delegates said

"I found the course very helpful in getting an understanding of how SIFs are determined and calculated and the ongoing requirements. Nigel was very knowledgeable about the topic. It was presented well and followed a good structure. There was also plenty of video examples which I find helps break up the presentation and keeps interest. Was also good to be across two sessions."
D Jenkins, Gower Chemicals, UK

Course outline

  • SIF life cycle phase 1
  • SIF life cycle phase 2
  • Introduction to HAZOP and LOPA
  • SIF life cycle phases 3 and 4 
  • SIF life cycle phases 5-11
  • Pitfalls 

Upcoming courses


Online courses consist of two live and interactive modules with the trainer.

From 17 April 2024

  • Module 1 – 17 April 2024, 10:00–13:00 BST
  • Module 2 – 18 April 2024, 10:00–13:00 BST

Live sessions are delivered via Microsoft Teams. If you don't already have this installed, you can join as a guest in order to access the training.


  • No scheduled dates.

Not available then?

Register your interest in alternative dates.


Course fees vary depending on delivery format and location. Select your preferred course date to see the relevant fees.

Early booking discount

Book by 2 February 2024 and save 25%. Use discount code EARLY25. This code cannot be used in conjunction with other offers eg multi-place discounts.

How to register

Select your preferred course from the list of upcoming start dates and go to the 'Book course' button at the bottom of this page.

More than one person to train?

Multi-place discounts

Discounts are available to companies booking more than one place. Bookings must be made at the same time to receive the discount.

  • 2 places – 10% discount
  • 3 places –15% discount
  • 4 or more places – 20% discount

In-company training

This course can be delivered to corporate teams, either on-site or online. This could be a cost-effective option if you have several people requiring the training. Content can be tailored to your specific requirements. Request a quotation.

Attendance certificate and CPD hours

An e-certificate will be issued at the end of the course to confirm attendance and CPD hours logged. Please note that you must attend all modules to receive the certificate.

CPD hours should be used as an approximate guide and will vary depending on the preferred approach of the delegate and to what extent additional learning is completed.

Contact Phone +44 (0)1788 534496

Contact Email

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Associated course

Layer of Protection Analysis (LOPA)

Learn about the LOPA methodology and how to apply it.

Nigel Bowker


Nigel Bowker

BSc(Eng), ACGI, MBA, C Eng, FIChemE

After graduating from Imperial College in 1976 with a degree in chemical engineering, Nigel worked as a process engineer for two firms of design contractors (Stone and Webster and Davy Powergas) and later worked for Shell Expro.

In 1986, he joined BP where he worked for the next 22 years. His career with BP included exploration and field development, production operations offshore (in Forties) and onshore (in the Forties Pipeline System), internal audit and health, safety and environment. His final role was as HS&E Manager in supply chain management for the North Sea.

After taking early retirement from BP, Nigel set up his own consultancy. He has provided a range of services to clients including process engineering, audit, process safety and occupational safety. He now specializes in chairing HAZIDs and HAZOPs and is an accredited HAZOP chairman with BP.

Nigel is a fellow of the Institution of Chemical Engineers and is a former chairman of the IChemE’s Aberdeen Member Group.

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