Lunch & Learn Session for 2019
Introduction Our Story
3 Our Story? Functional Safety Engineering Services Ltd. (FSES) was established in response to the much needed conformance to the international standards for Functional Safety and Engineering Safety. Our mission has always been to be the number one global safety consultancy, delivering services to various industries where compliance is required. | PHA | HAZOP | HAZID | SIL Assessment | Functional Safety | SRS | SIS Design | SIS Engineering | RAMS | FMEDA | Quantitative Risk Assessment | HIPS Studies | Maintainability Reviews | Value Improvement Engineering Practices | Best Practice Workshops | F&G Mapping | Emergency Response Planning | ESD Design and Development | Escape Evaluation and Rescue Analysis | Dropped Object Study | Building Risk Assessment | Environmental Impact Analysis | Project Risk Management | Safety Training | Safety and Engineering Competency | Pre Startup Safety Reviews |
The Safe The Safe Way Way Is the Is the Best Way Best Way
Topics Here are a list of the 2019 lunch & learn topics 1. Introduction to Functional Safety IEC 61508 and IEC 61511. 2. Safety Integrity Level (SIL) calculations, IEC 61508 part 6 explained. 3. Functional Safety Management. 4. Specifying and achieving Functional safety. 5. Risk Assessment Techniques and Selection. 6. Hazard and Operability (HAZOP) Study for qualitative assessment of process risk. 7. Layers of Protection Analysis (LOPA) as a SIL Classification Technique. 8. Introduction to Quantitative Risk Assessment for Complex facilities. 9. As Low As Reasonability Practicable (ALARP). 10.Introduction to Pre Start-up Safety Review. 5
Topic 1 Introduction to Functional Safety IEC 61508 and IEC 61511 This introduction provides an overview of the International Standards for provision of Functional Safety Services IEC 61508 (the mother standard) and thus its process industry derivative IEC 61511. The challenges faced in following the frame work are considered and presented. The concept of Safety Life Cycle and the requirements for Management of Functional Safety, minimisation of Random Hardware Failures and minimal Architectural requirements for Safety Systems are covered. Key points: • What is Functional Safety ? • Safety Life Cycle. • E/E/PE Safety Related Systems. • Risk Assessment Based approach provision of safe guards and protection layers. • What is SIS? What are SIFs? 6
Topic 2 Safety Integrity Level Calculations Safety Integrity Level; or SIL Verification demonstrates the capability of a Safety Instrumented Function (SIF) in accordance with IEC 61508 and IEC 61511 against the following requirements: • Quantifying the effect of random hardware failures (Probability of Failure on Demand (PFD) or the Average Frequency of Dangerous Failures (PFH); • Hardware safety integrity architectural constraints (Safe Failure Fraction (SFF), Hardware Fault Tolerance (HFT), Element Type A or B); • Systematic capability; • Common Cause Failure (CCF). Key points: • SIL Verification calculations. • Test intervals and down time. • Reliability Block Diagrams (RBDs). 7
Topic 3 Functional Safety Management The Functional Safety Lifecycle is one of the two concepts of IEC 61508 and IEC 61511 (the other being Safety Integrity Levels (SILs). This is a key requirement demonstrating how Functional Safety is to be implemented and achieved. Functional Safety Management relates to how Functional Safety requirements and procedures are implemented throughout the lifecycle of a project. Key points: • Safety Life cycle. • IEC 61508 part 1. • Verification and validation explained. 8
Topic 4 Specifying and Achieving functional Safety Implementation of the requirements of the standard into a companies procedures may not be an easy task, what are the requirements of the international standards for functional safety? This topic explains the synergy between the quality management systems and management of functional safety requirements as well as methods in specifying and achieving functional safety for pertinent projects. Key points: • Safety Life cycle. • IEC 61508 part 1 – Systematic control. • IEC 61508 part 2 – Hardware Assessments. • IEC 61508 part 3 – Software assessments. 9
Topic 5 Risk Assessment Techniques and Selection How does one go about selecting the appropriate Risk Assessment tool for the project in hand. How is the current phase of the project (i.e. concept, Pre Front End Engineering Design (FEED), FEED or Detailed Design) affect the selection of the assessment type. The session also provides details of where these types of risk assessments are called upon to address specific phases of the IEC 61511 Safety Life Cycle. Key points: • Qualitative Risk Assessment. • Semi-Quantitative Risk Assessment. • Quantitative Risk Assessment. 10
Topic 6 HAZOP for Qualitative Risk Assessment of Process Risk Process Hazard Assessment (PHA) is a set of organised and systematic assessments of the potential hazards associated with an industrial process. A PHA can provide information intended to assist in making decisions for improving safety and reducing the consequences of unwanted or unplanned releases of hazardous chemicals. A PHA is often directed towards analysing potential causes and consequences of undesirable events and it focuses on equipment, instrumentation, utilities, human actions, and external factors that might impact the process. PHA methods are qualitative in nature. The selection of a methodology to use depends on a number of factors, including the complexity of the process, the length of time a process has been in operation and if a PHA has been conducted on the process before, and if the process is unique, or industrially common. Key points: • PHA. • HAZOP. • HAZID. 11
Topic 7 Layers of Protection Analysis (LOPA) as a SIL Classification Technique The use of LOPA methodology and techniques in order to address the requirements of IEC 61511 Phase 2, Allocation of Safety Functions To Protection Layers. Calculating intermediate event frequencies for individual scenarios or multiple scenarios. Tolerable risk criteria and selection of appropriate risk targets. LOPA rule set, what are enabling conditions, Conditional Modifiers, and Independent Protection Layers? The common mistakes made in LOPA, commonality between initiating causes and credited safe guards or excessive use of conditional modifiers. Key points: • Initiating Events. • Conditional Modifiers and Enabling Conditions. • Protection layers. 12
Topic 8 Introduction to Quantitative Risk Assessment for Complex Facilities This session looks at how an appropriate QRA life cycle can be compiled for a complex facility or complex process hazards. What are the required steps in fully quantifying risk in terms of Individual Risk Per Annum (IRPA) and Potential Loss of Life (PLL). How can a QRA life cycle be customised to meet the financial requirements of project in terms of Life Cycle Cost Analysis. Key points: • Risk Targets. • Risk Assessment using figures. • Results and ALARP. • Cost benefit. 13
Topic 9 ALARP ALARP stands for "As Low As Reasonably Practicable", and is a term often used in the milieu of safety-critical and safety involved systems. The ALARP principle is that the residual risk shall be as low as reasonably practicable. Demonstration of ALARP and cost benefit analysis. Calculation of justified cost. Do we need to do more, if so how? if not why? Key points: • Tolerable Risk Levels. • Risk Reductions. • Disproportionate factors. • Good practices. 14
Topic 10 Introduction to PSSR What is PSSR? Why do we conduct PSSR and the requirements for OSHA PSM / EPA RMP regulatory compliance. Review and introduction to the PSSR frame work and Management of Change (MoC). Key points: • Introduction to PSSR. • PSSR Lifecycle. • PSSR Methodology. • PSSR Tracking . 15
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