Course FS2E
Design of SIFs & SIL Verification

Information about course FS2E

Design of Safety Instrumented Functions (SIFs) and SIL Verification course focuses on practical design and SIL verification following IEC 61508/61511 and ISA84 Standards. Participants work on real-world examples using the SILcet Tool.
The course covers key concepts like SIF, SIS, SIL, risk analysis techniques, and Safety Requirements Specifications (SRS), followed by hands-on exercises for scenarios such as tank level safety, pressure vessel overpressure, and emergency depressurization.
Participants get 60 days of access to materials (PDFs, videos, templates) and a 6 to 12-month SILcet Pro Plus license, depending on the package. Live sessions with instructors are available in some versions, and certain packages also offer a certification exam.
The course is designed for technicians, integrators, and engineers working in Functional Safety and Safety Instrumented Systems (SIS) in the process industry.

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Course Details

MODALITY

Online (with/without live classes)

AREA

SIS

TRAINER

SafetyandSIS Trainers

LANGUAGE

English

Modules 1-2-3

Basic concepts, International Standards. What does SIF, SIS, SIL mean? Control System versus Safety Instrumented System
Types of failures and examples. The importance of diagnostics. Types and examples.
SIS Life Cycle: Risk Analysis, Design and Implementation, Operation and Maintenance
Risk concepts and how to reduce them with layers of protection. What is an independent protection layer (IPL)? SIS principle of independence and shared elements.
Types of Risk Analysis Techniques. Determination of «SIL» with Risk Graphs. Risk Gap concept, required SIL. Example with Risk Graph.
Example with Safety Requirements Specification (SRS).
Most used architectures and examples. Principles of safety system design. Safety versus Availability.
IEC requirements and key parameters to calculate the SIL. Formulas to calculate PFDavg and MTTFS. Data sources of failure rates.
Simple example of SIL verification.

Module 4

Assumptions for the examples (configuration Low/High of the transmitter according to the architecture, online / offline tests, etc.).
Practical exercises using the SILcet Tool:
1. Tank Level (several cases)
2. Vessel under pressure (several cases):
  - undefined sensor type
  - transmitter vs switch
  - diversity of elements
  - credit by comparison
  - bypass impact.
3. Calculate the SIL achieved by the Logic Solver.
21 general considerations to design the SIS.
Excel files included: “SILcet with the exercises solved” & Example of Safety Requirements Specification (SRS).

Module 5

Assumptions for the examples.
Real practical exercises using the SILcet tool:
1. Low combustion air flow in Incinerator or Furnace.
2. Stop of high pressure pumps by partial closure of the suction.
3. Gas valve closure due to flame loss.
4. Emergency depressurization in a reactor: action on several lines when the temperature is excessive (Reactor Bed Temperature).
5. How to solve a SIF with two Logic Solvers (Safety PLCs).
6. SIF with shared elements (Control System and SIS).
7. Example with Partial Valve Stroke Test.
8. Examples with Complex Architectures.
Excel file included: “SILcet with the exercises solved”.

Module 6

How to prepare a SIL Verification Report.
Main document with MS-Word Template.
Annex of parameters, graphs and results (PFDavg, PFH, MTTFS) generated by SILcet.
Example of report with the exSILentia tool.

Module 7

Note: Other additional exercises that are delivered resolved to the participants at the end of the course.

Assumptions for the exercises.
Real practical exercises using the SILcet tool (in each case there are several possible configurations):
- Turbine Trip Valve Hydraulic System.
- High Integrity Pressure Protection System
- Pressure vessels (different cases).
- Others: Solutions with high availability, Fire & Gas System, Protection of a Silo.
Excel file included: “SILcet with the exercises solved”.

Objetive

Understand what a SIF is and what concepts and parameters are the most influencing its design.

Learn how to design a SIF and calculate and verify the SIL and MTTFS of real Safety Functions in the process industry.

Benefit from Lessons Learned and Best Practices acquired from Major Projects.

Why is it a different course?

Because we use a SIL calculation and verification tool developed by us (“SILcet“) that allows us to make a lot of real examples. This is impossible to perform in most functional safety courses due to the complexity of calculations when dealing with real cases.
We provide a free license (Pro Plus) of SILcet with many of the examples of the course.

Documentation

Methodology

Course in English
Duration (full course of 7 modules): 20 hours in 60 days depending on student level (available 24/7).
Methodology “learn by doing”
Individual Progress + Scheduled sessions in some courses.

Documentation

PDF documents, including the practical cases.
Excel files (SILcet) with real calculations.
SILcet Pro Plus license included.
SILcet Manual and detailed document with formulas to calculate PFDavg and MTTFS.
Videos with explanations.
Instructor Support
Exercises, evaluation tests and training certificate.
Virtual Campus

The student can download all the documentation and tools on his/her PC, except the videos.

Aimed at

Technicians, designers, system integrators and engineers related to Functional Safety and Safety Instrumented Systems (SIS) of the process industry.
It is advisable to have certain knowledge of instrumentation and control.

The objective is to acquire knowledge to understand and design Safety Instrumented Functions (SIF) from a totally practical point of view. To do this, real examples are made with the SILcet tool that allows different design alternatives to be compared.

Price

Online (FS2E-WI)

490 €

Course of 15-20 hours in virtual classroom with email support
The course begins immediately after purchase
60 days of free access to the virtual classroom with the contents (PDFs, Videos, Excel, Word)
Videos in english, examples, exercises and evaluation test.
SILcet Pro Plus license included (6 months license)

BUY

Online (FS2E-1)

790 €

Course of 15-20 hours in english for 1 participant, includes 3 hours with the instructor
60 days of free access to the virtual classroom with the contents (PDFs, Videos, Excel, Word)
SILcet Pro Plus license included (6 months license)
Videos in english, examples, exercises and evaluation test
2 classes of 1.5 hours with the Instructor

BUY

Online (FS2E-2)

450-650 €

Course of 15-20 hours in english for 2 to 6 participants, includes 5 hours with the instructor
60 days of free access to the virtual classroom with the contents (PDFs, Videos, Excel, Word)
SILcet Pro Plus license included (12 months license)
Videos in english, examples, exercises and evaluation test
2 classes of 2.5 hours with the Instructor