This 2-day course is designed to deliver expert instruction on how to successfully plan and execute Safety Integrity Level (SIL) Determination studies efficiently, effectively and in accordance with the IEC 61511 standard. This includes understanding the principles behind three of the most commonly used SIL Determination methods (Layer of Protection Analysis, Calibrated Risk Graph and Safety Layer Matrix), learning how to deal with challenging personalities within the SIL team and how to avoid common pitfalls and traps so your studies run smoothly.

Note* The SIL Determination / LOPA Workshop can be taking in conjunction with the SIL Validation Workshop to gain a more thorough understanding of the Safety Lifecycle process.

This course teaches all the requirements to prepare team leaders to facilitate and document SIL Determination studies, including:

• Risk Assessment specialists
• SIL / PHA / HAZOP team leaders & scribes
• Process Safety Management (PSM) / Loss Management specialists
• Supervisors, managers and engineers responsible for SIL studies
• Project managers who need to understand the concepts and principles of IEC 61508 & 61511
• Engineers involved in any aspect of the SIS Safety Lifecycle

Participants should understand the process of executing a HAZOP study and be familiar with typical HAZOP reports.

Malcolm Harrison, B.Sc. Mech. Eng., P.Eng., TÜV F. S. Expert

Mr. Harrison is a P. Eng. with over 38 years experience in Instrumentation and Controls. Malcolm spent over 35 years with Shell and has diversified upstream and midstream experience in the heavy oil, offshore, refining and gas processing sectors. He is an experienced SIL Determination facilitator and has worked on billion dollar projects ensuring horizontal I & C alignment between multiple EPCMs. Malcolm is a TÜV Functional Safety Expert and leads training workshops globally for ACM.

Ken Bingham, CET, TÜV F. S. Expert

Mr. Bingham is the Principal of ACM Facility Safety and a TÜV certified Functional Safety Expert. His background is in engineering design and management, involving safety, instrumentation, electrical and control systems. With Ken’s 27 years on the client side, integration side and the SIL consulting side, he brings a holistic and practical perspective. Mr. Bingham has participated on ISA S84 SIL standard committees, has presented numerous papers and courses on SIL Analysis and is the Chief Technical Architect for ACM’s field proven, IEC 61511 compliant Safety Integrity Level (SIL) Life Cycle tool, SilCore™.

The course is comprised of two days of combined classroom instruction and workshop exercises. In addition to expert instruction from an experienced, professional SIL Determination facilitator, you will also form a study team with other participants and take turns leading the team through “practice” SIL Determination studies. The instructor will coach you and provide feedback on your performance. SilCore™ software is used throughout the workshop to demonstrate the SIL methods, document the SIL studies and produce typical SIL Determination reports.

The course follows the first two phases of the SIS Lifecycle within the IEC 61511 standard.

WORKSHOP EXERCISE EXAMPLE

Given the following data, perform a SIL Determination study using LOPA (Layer of Protection Analysis), Risk Graph and Safety Layer Matrix techniques.

Situation: Sour Hydrogen Gas Reciprocating Compressor

The hydrogen gas is highly flammable and very toxic (100 ppm H2S). The gas is cooled in an exchanger to knock out any liquids to prevent damage to the compressor.

Data Available:

• A HAZOP has been performed on the system
• LOPA Tolerable Frequency (TF) is one fatality in 1,000 years
• Economic and environmental risk cases are not to be determined
• The Risk Graphs are those shown in Slides #114 -118
• Process upstream upset: Every 3 months
• LV-2 MTTF: 12 years
• Operator error rate: 1 in every 100 attempts
• Exchanger bypass valve manipulation: Every two weeks
• Cooling water inlet valve operation: Every two years
• Knockout outlet pot valve operation: Every week
• Exchanger leak: Every 25 years

To Model: High liquid level in the knock out pot case with a Tolerable Frequency of one fatality in one thousand years.

By the end of this course each student should be able to successfully perform this SIL Determination exercise.