DEKRA Process Safety

SIL Requirements (SIL Determination)

process safety training


Dates 25/04/2018 to 26/04/2018
Location Southampton
Included Lunch, Refreshments & Course Notes
Venue Phi House
Booking Click Here


To have a SIL rated trip is not a success but a failure. What it means is that the one SIL rated trip is essential for covering the gap between the actual risk achieved and the corporate safety target. The ideal is therefore to show that there are sufficient other layers of protection to achieve the corporate target without any gap.

The need for a SIL rated trip and the requirements for that trip is a team decision and so this training course is for process engineers and others who can identify and evaluate the other layers of protection of whatever kind and identify any remaining gap. Therefore this training course is for process engineers, mechanical engineers and others at the forefront of that assessment and not just for the instrument engineers.

The course includes exams on the content. This course explores the legal framework as well as methods of evaluation used for safety instrumented systems. The course also includes how to design and calibrate a risk graph for your company that meets the requirements of latest edition of IEC61511:3 and is presented by the author of the I.Chem.E book on the subject.


Day 1:

The introduction starts with the status of IEC61511 and IEC61508. The course then shows what a SIL assessment examines and who provides the information. The candidate is reminded that to have a SIL rated system is not a success but a failure and so the objective is to show that a SIL system really is needed and that everyone understands why. LOPA is used to understand the SIL assessment and we then examine what a SIL rated loop means and covers.

Day 2:

The course looks at the design and calibration of a risk graph that is actually LOPA and why that is of benefit to the risk assessment and HAZOP study teams. The importance of having a risk graph, that is based on LOPA, when it is known that LOPA will be used later for the full assessment is covered. The steps are then covered to allow the candidate to design and calibrate a risk graph suitable for their application and in accordance with IEC61511 Part 3 Annex I. We finish by looking at the importance of Functional Safety Management and the sensible way to complete the requirement.

Please note - This training course includes exams and the results of the exam are shown on the candidate’s certificate.


  • Health & Safety Personnel
  • Engineering Staff
  • Plant Engineers
  • Regulatory Staff
  • Operations Staff

A key aspect to our courses is for our delegates to gain the knowledge and solutions applicable to their own situations, so numbers are capped to ensure we have sufficient time for your feedback and early booking is therefore recommended.

Registration:  Click Here

Phone: +44 (0)23 8076 0722 - Fax: +44 (0)23 8076 7866

Email: Click Here

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