Course Overview
This comprehensive professional development program is designed for Personnel responsible for safety instrumentation systems, Personnel who want to understand and use safety instrumentation systems, Asset management team members, Instrument and Process Control Engineers and Technicians, Mechanical engineers and Technicians, and Operations and Process Engineers responsible for implementing Safety Instrumented Systems across refinery, petrochemical, nuclear, and chemical process industry contexts. The program addresses proven practices in HAZOP-LOPA-SIL methodology application, SIS lifecycle management and compliance, and PHA and SIS utilization for accident prevention where Ecopetrol Cartagena refinery case showing application of full HAZOP-LOPA-SIL workflow to alkylation unit identifying 24 high-risk scenarios and assigning PFD values to each safeguard to determine required SILs, nuclear research reactor study showing introducing structured hazard analysis and SIL assignment and proof-testing significantly improving safety posture of legacy plants, and PHA and SIS utilization study showing that while PHA and SIS are generally rated positively performance factors related to barrier controls and organizational behavior only have moderate positive relationship indicating gaps that can still lead to industrial accidents.
The curriculum integrates Introductions covering Managing Risk and Standards, SIS Safety Instrumented Systems fundamentals, HAZOP and LOPA, HAZOP and SILs, Layers of Protection and LOPA, Basic Process Control System Layers of Protection, Understanding Failures, Human Error, Safety Integrity Level Categorization and Safety Integrity, Override Control, Operations Role in the SIS Safety Lifecycle, Demand Tracking and Maintenance Role in the SIS Safety Lifecycle, and LoP Maintenance and Proof Testing to provide comprehensive coverage of SIS principles, SIL determination methodologies, and lifecycle management domains for achieving Safety Instrumented Systems excellence.
Why This Course Is Required?
HAZOP-LOPA-SIL methodology application and risk reduction represent critical competencies where Ecopetrol alkylation unit case showing application of full HAZOP across 13 sections of alkylation process identifying deviations caused by human error and equipment failure and external events with 24 scenarios classified as significant or high risk and further analyzed via LOPA to identify existing protection layers including BPCS loops and relief devices and containment and assign PFD values after which required SILs were specified for additional safety instrumented functions along with recommendations to improve safeguards and operations. SIS lifecycle management and standards compliance demand specialized knowledge where nuclear research reactor study showing professionals who understand SIS safety lifecycle from concept and hazard analysis through design and implementation and operation and maintenance and decommissioning can apply modern SIS concepts even in complex legacy environments with incomplete design records with authors showing that introducing structured hazard analysis and SIL assignment and proof-testing significantly improves safety posture of legacy plants reinforcing course’s emphasis on lifecycle phases and independence from BPCS and compliance with IEC 61508 and IEC 61511 and ANSI/ISA-84. PHA and SIS utilization and accident prevention require professionals with SIS expertise where investigative study using survey data from 36 industry participants evaluating how PHA and SIS interventions during design and implementation contribute to accident prevention showing that while PHA and SIS are generally rated positively performance factors related to barrier controls and organizational behavior only have moderate positive relationship indicating gaps that can still lead to industrial accidents underscoring importance of robust layer-of-protection management and override governance and safety culture.
SIS professionals must master introductory fundamentals including managing risk in oil and gas and timeline of disasters and standards and what is a safety instrumented system and confusion in industry technology choices and redundancy choices and field devices and test intervals and industry standards including IEC 61508 and ANSI/ISA-84.00.01 and IEC 61511 and NFPA 85 and API RP 556 and API RP 14C and OSHA, understand comprehensive HAZOP and LOPA frameworks including SIS safety lifecycle hazard identification and defining a hazard and HAZOP process and consequence severity and likelihood and determining risk ranking and risk matrix and tolerable risk and layers of protection analysis steps and LOPA participant requirements and HAZOP versus SIL, and apply proper SIL categorization and proof-testing methods including probability and likelihood of failure on demand and risk reduction and PFD calculation for safety instrumented function and safety integrity level categorization and hardware selection and reliability and fault tolerance and failure robustness and fault-tolerant architecture and proof testing impact of PFD and partial stroke testing to ensure organizations achieve superior HAZOP-LOPA-SIL methodology application and risk reduction, enhanced SIS lifecycle management and standards compliance, improved PHA and SIS utilization and accident prevention, and competitive advantage through SIL determination, override control, and continuous demand tracking and proof-testing protocols.
Research demonstrates training is crucial for success, with Ecopetrol alkylation unit case showing engineers who can systematically perform HAZOP and structure LOPA and assign PFD values and derive required SILs being able to judge whether proposed or existing SIS designs truly meet risk-reduction targets with course’s coverage of hazard identification and risk matrices and LOPA and SIL categorization and proof-testing giving those analytical skills to apply directly in refineries and petrochemical plants and other process facilities, while nuclear reactor SIS retrofit study showing professionals who understand SIS safety lifecycle from concept and hazard analysis through design and implementation and operation and maintenance and decommissioning can apply modern SIS concepts even in complex legacy environments with details on lifecycle roles and responsibilities and independence requirements and periodic testing needs mirroring course’s focus on lifecycle thinking, and PHA-SIS utilization study showing individual engineers and technicians who understand how human factors and organizational behavior and barrier performance interact with SIS design and operation being better placed to spot gaps before they manifest as incidents with learning about human error and override control and demand tracking and proof-testing in course helping translate PHA and SIS results into practical improvements in procedures and maintenance and operations.
Course Objectives
Upon successful completion, participants will have demonstrated mastery of:
- Differentiating between process control and safety control, and understanding how Safety Instrumented Systems (SIS) serve as critical, independent protection layers against major incidents and process hazards.
- Implementing the IEC 61511 and IEC 61508 (ISA84) functional safety standards across the SIS lifecycle from concept, design, and installation to operation, maintenance, and decommissioning to assure reliable risk reduction and regulatory compliance.
- Evaluating process risk levels by defining hazards and applying methodologies such as HAZOP and Layers of Protection Analysis (LOPA) to determine the necessary risk reduction measures and tolerable risk rankings.
- Calculating and determining Safety Integrity Levels (SIL) using various techniques, determining Probability of Failure on Demand (PFD), and verifying that proposed or existing Safety Instrumented Functions (SIFs) meet performance targets.
- Analysing the performance of logic system architectures (e.g., 1oo2, 2oo2, 2oo3) and examining sensors and final elements to mitigate random hardware and systematic (human error) failures.
- Applying demand tracking and maintenance strategies including proof testing intervals, bypass/override control, and partial stroke testing to optimise SIS performance and significantly reduce maintenance and spare-part costs while preserving required safety levels (e.g., as demonstrated by optimisation models in the oil and gas sector achieving up to 60% savings).
Master Safety Instrumented Systems excellence and drive HAZOP-LOPA-SIL optimization and lifecycle management success. Enroll today to become a Certified Safety Instrumented Systems Professional!
Training Methodology
This interactive Safety Instrumented Systems Certification Training program comprises the following training methods:
The training framework includes:
- Lectures
- Seminars and Presentations
- Group Discussions
- Assignments
- Case Studies and Functional Exercises
- Workshops developing HAZOP facilitation and LOPA structuring skills
- Hands-on exercises practicing SIL determination and PFD calculation techniques
- Practical demonstrations with hazard identification scenarios and proof-testing procedures
This immersive approach fosters practical skill development and real-world application of Safety Instrumented Systems principles through comprehensive coverage of SIS principles, SIL determination methodologies, and lifecycle management domains with emphasis on measurable risk reduction and accident prevention and SIS compliance improvement.
This program follows the Do-Review-Learn-Apply model, creating a structured learning journey that transforms traditional safety instrumentation approaches into professional Safety Instrumented Systems excellence.
Who Should Attend?
This Safety Instrumented Systems Training Course is designed for:
- Personnel responsible for safety instrumentation systems
- Personnel who want to understand and use safety instrumentation systems
- Asset management team members
- Instrument and Process Control Engineers and Technicians
- Mechanical engineers and Technicians
- Operations and Process Engineers
- Process safety engineers
- Reliability and maintenance engineers
- HSE professionals in chemical process and oil and gas industries
Organizational Benefits
Organizations implementing Safety Instrumented Systems training will benefit through:
- Significantly enhanced HAZOP-LOPA-SIL methodology application and risk reduction through comprehensive training delivering measurable returns where Ecopetrol alkylation unit case showing HAZOP across 13 sections identifying deviations caused by human error and equipment failure and external events with 24 scenarios classified as significant or high risk and further analyzed via LOPA identifying existing protection layers and assigning PFD values after which required SILs were specified for additional safety instrumented functions with findings showing that even units with fair safety systems equipped with controllers and protection layers may still need additional safeguards in certain sections to fully mitigate all hazardous scenarios exactly what training teaches
- Better SIS lifecycle management and standards compliance through nuclear research reactor study showing introducing structured hazard analysis and SIL assignment and proof-testing significantly improving safety posture of legacy plants with authors recommending clearer separation between BPCS and SIS and updated proof-test intervals and enhanced documentation and maintenance practices illustrating how lifecycle and SIL concepts from this course can be applied beyond conventional oil and gas and chemical plants validating course content
- Improved PHA and SIS utilization and accident prevention through investigative study using survey data from 36 industry participants showing that while PHA and SIS are generally rated positively performance factors related to barrier controls and organizational behavior only have moderate positive relationship indicating gaps that can still lead to industrial accidents reinforcing importance of robust layer-of-protection management and override governance and safety culture as covered in multiple course modules as organizational benefits highlighted in training
- Strengthened competitive advantage through keeping company one step ahead with all-inclusive overview of Safety Instrumented Systems and assisting technical committees to create and publish and revise working standards relating to SIS and carefully studying examples and case studies and leaving with awareness and understanding of roles and responsibilities in workplace in relation to Safety Instrumented Systems
Studies show that organizations implementing comprehensive Safety Instrumented Systems training achieve significantly enhanced delivery outcomes as research confirms Ecopetrol alkylation unit analysis showing rigorous analysis involved in each hazardous scenario demonstrating importance of team experience at analyzing each scenario and considering the frequency of events to determine the probability of failure of safeguards in the unit reinforcing course’s emphasis on consequence-based SIL determination, better organizational outcomes through lifecycle management evidence demonstrating nuclear reactor study showing structured hazard analysis and SIL assignment and proof-testing combined with clearer BPCS-SIS separation and updated documentation and maintenance practices significantly improving safety posture of legacy plants, and improved competitive positioning as SIS approach enables better accident prevention while organizations benefit from understanding how to apply HAZOP and LOPA and SIL in real operations and how to govern overrides and track demands and conduct proof-testing to close the gaps that surveys confirm still exist between PHA-SIS intent and operational reality.
Empower your organization with Safety Instrumented Systems expertise. Enroll your team today and see the transformation in HAZOP-LOPA-SIL methodology and lifecycle management!
Personal Benefits
Professionals implementing Safety Instrumented Systems training will benefit through:
- Deeper understanding of HAZOP-LOPA-SIL analytical mastery and risk-reduction judgment through Ecopetrol alkylation unit case demonstrating engineers who can systematically perform HAZOP and structure LOPA and assign PFD values and derive required SILs being able to judge whether proposed or existing SIS designs truly meet risk-reduction targets with course’s coverage of hazard identification and risk matrices and LOPA and SIL categorization and proof-testing giving those analytical skills to apply directly in refineries and petrochemical plants and other process facilities
- Enhanced SIS-lifecycle-thinking mastery and legacy-environment contribution through nuclear reactor SIS retrofit study showing professionals who understand SIS safety lifecycle from concept and hazard analysis through design and implementation and operation and maintenance and decommissioning can apply modern SIS concepts even in complex legacy environments with incomplete design records with by detailing lifecycle roles and responsibilities and independence requirements and periodic testing needs paper mirroring course’s focus on lifecycle thinking equipping to contribute to upgrades and modifications
- Stronger human-factors-barrier-performance mastery and gap-prevention capability through PHA-SIS utilization study showing individual engineers and technicians who understand how human factors and organizational behavior and barrier performance interact with SIS design and operation being better placed to spot gaps before they manifest as incidents with learning about human error and override control and demand tracking and proof-testing in course helping translate PHA and SIS results into practical improvements in procedures and maintenance and operations
- Advanced expertise in SIS principles, SIL determination methodologies, and lifecycle management domains
- Enhanced career prospects and marketability in process safety, instrumentation and control engineering, SIS design and verification, and HSE management sectors with professionals gaining skills in HAZOP facilitation, LOPA structuring, and SIL determination
- Ability to keep up with late-breaking developments in Safety Instrumented Systems by studying new literature and other sources of information
- Skills to benefit from tailor-made academic program for technicians or equivalent workforce involved in Safety Instrumented Systems
- Knowledge to get trained and assessed and certified by experts in Safety Instrumented Systems
- Capability to provide examples of issues encountered during normal working activities and get possible solutions
Course Outline
MODULE 1: Introductions
- Managing Risk in Oil and Gas Timeline of Disasters and Standards
- What Is a Safety Instrumented System?
- Confusion in the Industry Technology Choices, Redundancy Choices, Field Devices and Test Intervals
- Industry Standards, Regulations, Recommendations, Guidelines and HSE – PES
- Generic and Application Sector Standards
- Safety Instrumented System Standards: IEC 61508. ANSI/ISA-84.00.01, IEC 61511, NFPA 85, API RP 556, API RP 14C, OSHA
- Design Lifecycle-Findings of the HSE
- Hazard & Risk Analysis
- SIS Design & Engineering
- Overview of the SIS safety lifecycle phases
- Role of standards (IEC 61511 / ISA‑84) across the lifecycle
MODULE 2: SIS-Safety Instrumented Systems
- What is SIF (IPF)?
- What is a Safety Instrumented System (SIS)?
- SIS Safety Lifecycle
- Lifecycle Graphic
- Relationship between SIS and Basic Process Control System (BPCS)
- Examples of typical Safety Instrumented Functions in process plants
MODULE 3: HAZOP & LOPA
- SIS Safety Lifecycle – Hazard Identification
- Defining a Hazard
- The HAZOP Process
- GP 48-02 HAZOP process – simplified
- Consequence Severity and Likelihood – Determining Risk Ranking
- Risk Matrix and example
- Safety criteria, Environmental criteria, Commercial criteria
- Tolerable Risk
- Using LOPA results to support SIL determination
- Documenting assumptions and safeguards in HAZOP/LOPA studies
MODULE 4: HAZOP & SILs
- SIL Determination
- Layers of Protection Analysis (LOPA):
- IEC 61508 / IEC 61511 – Risk graph
- Fault Trees, Safety Integrity Levels (SIL)
- Comparison of qualitative vs. semi‑quantitative SIL methods
- Link between SIL targets and required risk reduction factor
MODULE 5: Layers of Protection & LOPA
- Layers of Protection – The Swiss Cheese Model
- Layers of Protection Analysis (LOPA)
- LOPA – Steps (provided for reference)
- Another model to look at how LoPs mitigate risk to the tolerable level – Over-pressure example
- LOPA – How much credit for LoPs?
- Applying LoPs to reduce risk
- LOPA – Participant requirements
- Process industry LoP Example – Simple vessel, Simple vessel/reactor
- Requirements for Layers of Protection – Four Further Criteria
- LOPA example – multiple causes
- HAZOP vs. SIL
- Typical independent protection layers in process plants
- Common pitfalls when assigning LoP credit
MODULE 6: Basic Process Control System (BPCS) Layers of Protection
- Instrument Layers of Protection are in Various Systems
- Operating Limits
- BPCS Layers of Protection – 1. Control Loop, 2. Safety Related Alarm (SRA), 3. BPCS Interlock Function
- Other requirements for BPCS LoPs – Independence, Identification on HMI graphics
- Identification of Control Loop & SRA on the HMI graphics – Examples
- Let’s take a closer look at Alarm Requirements
- Critical Fault Alarms
- Identification of SRA’s in the Alarm
- Safety Related Alarm Register
- Good practices for alarm rationalisation and prioritisation
- When BPCS functions should not be credited as LoPs
MODULE 7: Understanding Failures
- The Swiss Cheese Model – Understanding Failure Representation and Impact
- Understanding Failure – Example of a PC and a Transmitter
- Types of Failures – Random Hardware Failures and Failures due to Human Errors
- Effect of a Failure – Safe and Dangerous Failures
- Safe and Dangerous Failures – Examples
- Failure Modes – Detected or Undetected
- Four Failure Modes
- Example of an Undetected Failure
- Common Cause and Common Mode Failures
- Avoiding Common Cause Failures in Operations and Maintenance
- Exercise – A potential failure
- Link between failure modes and SIL/PFD targets
- Recording and analysing SIS failure data for improvement
MODULE 8: Human Error
- Human error – Consider a simple task which we do very often
- The Level of Human Error
- Human Error – The Basics
- The normalisation of Deviance – Exercise
- Human Error and the SIS Safety Lifecycle
- Human Error in Hazard Identification and Layer of Protection Definition – Examples (for Reference), Detailed Engineering and Assembly – Examples (for Reference), Installation, Commissioning and Validation – Examples (for Reference), Operation and Maintenance – Examples (for Reference), Modification or Decommissioning – Examples (for Reference)
- Human Error related to SIS Safety Lifecycle Management – Examples (for Reference)
- Avoiding Human Errors – What can we do?
- An Example – Avoiding Human Error
- Safety Culture
- Designing procedures and checklists to reduce SIS human error
- Training and competency needs for SIS-related tasks
MODULE 9: Safety Integrity Level (SIL) Categorization and Safety Integrity
- HAZOP vs. SIL
- SIL Determination
- Probability and likelihood of Failure on Demand and Risk Reduction
- PFD calculation for Safety Instrumented Function
- Safety Integrity Level
- Safety Integrity Level Categorisation
- Environmental and Commercial Integrity Levels
- Other Integrity Level functions – SIL 0 and no SIL rating
- Hardware Selection, Reliability, Fault Tolerance and Failure Robustness
- Fault-Tolerant Architecture – 1oo2, Failure Robust Architecture – 2oo2, Architecture Resilience – 2oo3 Inputs and 1oo2 Outputs
- Summary of Architecture – Advantages & Disadvantages
- Probability of Failure and Purpose of Proof Testing
- Proof Testing Impact of PFD
- Using tools to verify that design meets target SIL
- Documenting SIL calculations and assumptions
MODULE 10: Override Control
- Override Definition, Exercise – Bypasses, Examples of Overrides
- A typical facility and its protection
- All layers of protection in place
- Fire and Gas Detection taken out for maintenance
- Temporary mitigation put in place
- Implications of Overrides
- Override Procedure – Typical ‘Best Practice’ Workflow
- Override-Equivalent Compensating Measures
- Safety Override Considerations
- Safety Override and Risk Assessment – SORA
- Generation of a SORA
- Reusing SORAs
- Override Key Performance Indicators (KPIs)
- Override Decision Tree
- Good practices for managing bypasses and overrides
- Typical override limits and approval requirements
MODULE 11: Operations Role in the SIS Safety Lifecycle/Operations Role in Maintaining LoP Integrity
- Operators Role in the SIS Safety Lifecycle
- Exercise – Control Loop credited in LOPA
- Control Loop credited in LOPA – Manual mode
- Control Loop credited in LOPA – Setpoint adjustment
- Control Loop credited in LOPA – Hardware Failures
- Control Loop credited in LOPA – Poor Loop Performance
- Exercise – Safety Related Alarms
- Safety Instrumented Functions – Proof Testing
- Safety Instrumented Functions – Minimizing Human errors
- BPCS Interlocks
- Shift handover and communication of SIS status
- Operator responsibilities for demands, trips, and reset
MODULE 12: Demand Tracking/Maintenance Role in the SIS Safety Lifecycle/LoP Maintenance & Proof Testing
- What is a “Demand”?
- A simple LoP example
- What creates Demands on an LoP?
- Which Demands to Track?
- Benefits of Demand Tracking
- How to Track Demands?
- Safe Operating Limits and Demand Tracking
- Maintenance Role in Safety Lifecycle
- Using demand and failure data to refine proof test intervals
- Coordination between operations and maintenance on SIS work
MODULE 13: LoP Maintenance & Proof Testing
- Exercise – Routine Maintenance on a car
- Different types of maintenance
- General Maintenance – Exercise
- Routine Maintenance Planning
- Proof Test Coverage – Proof Test Coverage from various Means of Testing on the SIS Input
- Inspection Tasks
- Proof Testing impact of PFD
- Partial Stroke Testing
- Proof Testing – Definition, Example Analogy – Why do we proof test?, Principles, End-to-End Testing, Continuously or in Parts, Online or Offline, A comparison of two variations of ‘End-to-End’ testing, Continuous vs. Testing-In-Parts
- Continuous and Testing-In-Parts – Advantages and Disadvantages
- Online & Offline Testing – Advantages
- Proof Testing – Inputs, Logic Solver, and Outputs
- Proof Testing – Data Captured
- Exercise – Does this valve “pass” on its proof test?
- Exercises and Summary
- Planning SIS proof-test campaigns and resources
- Updating SIS documentation and SRS after changes
Real World Examples
Ecopetrol Cartagena refinery – Alkylation unit HAZOP, LOPA and SIL
Implementation: A case study on the alkylation unit at Ecopetrol’s refinery in Cartagena, Colombia applied the full HAZOP-LOPA-SIL workflow to a process producing high-octane alkylate from light olefins using hydrofluoric-acid catalysis, with HF posing major safety risks as it can vaporize on release and travel significant distances as dense vapor cloud causing severe burns and internal damage and even death with OSHA and EPA regulating HF as highly toxic. HAZOP analysis covered 48 nodes distributed among 13 sections of the alkylation process examining deviations across relevant variables including Temperature and Pressure and Level and Charge composition and Concentration and Flow using guide words of More and Less and None with each scenario categorized as affecting safety and environmental and financial considerations and ranked according to estimated severity using five levels from S1 Negligible to S5 Catastrophic and likelihood using five levels from F1 Improbable to F5 Frequent. From all deviations analyzed, 24 scenarios were identified as significant risk and high risk across nine of the thirteen sections of the HF alkylation unit and these 24 scenarios were then analyzed by LOPA and SIL methodologies to identify layers of protection including process design and BPCS loops and procedures and emergency response mitigating hazardous scenarios and assigning PFD values to each independent protection layer.
Results: Based on HAZOP-LOPA-SIL analysis, for the HF regeneration section two high-risk scenarios involving high pressure in the closed drain drum both required SIL 1 implementation with recommendation to install a high-pressure alarm to reduce overall consequence frequency to acceptable level of 1E-8 per year. One significant-risk scenario in HF regeneration involving low pressure in acid regenerator due to manual valve left open required SIL 1 implementation corresponding to recommendation of changing manual valve for a relief valve to help prevent air pollution and system from exceeding specified overpressure. Study concluded that unit has fair safety system equipped with controllers and protection layers but in some parts of plant it is needed to implement more safeguards to mitigate hazardous scenarios, directly reflecting how HAZOP and LOPA and SIL determination techniques taught in this course support practical risk-reduction decisions in real refinery operations.
Older nuclear research reactor – Applying SIS lifecycle concepts
Implementation: In a study reported in Nuclear Engineering and Design, researchers evaluated an older nuclear research reactor against modern SIS principles using IEC 61508 and IEC 61511 as reference frameworks for lifecycle management. Researchers performed hazard analysis and considered target SILs for key safety functions in a plant whose protection systems pre-dated these standards, assessing feasibility and gaps and benefits of SIS-style lifecycle management for legacy nuclear systems. Study examined how structured hazard analysis and SIL assignment and proof-testing could be introduced into a legacy environment and recommended changes such as clearer separation between BPCS and SIS and updated proof-test intervals and enhanced documentation and maintenance practices.
Results: Authors showed that introducing structured hazard analysis and SIL assignment and proof-testing significantly improved the safety posture of the legacy plant, illustrating how lifecycle and SIL concepts from this course can be applied beyond conventional oil and gas and chemical plants. Study reinforced this course’s emphasis on SIS lifecycle phases and independence from BPCS and compliance with standards such as IEC 61508 and IEC 61511 and ANSI/ISA-84 showing that professionals who understand full SIS safety lifecycle can contribute to upgrades and modifications even in complex legacy environments with incomplete design records.
Multiple chemical plants – PHA and SIS utilization in accident prevention
Implementation: An investigative paper on effective utilization of process hazard analysis and safety instrumentation systems in chemical process industries conducted research using a survey questionnaire developed with the help of a focus group based on theoretical and conceptual framework developed for the study. Survey received responses from 36 participants who met inclusion and exclusion criteria with validity and reliability established using confirmatory factor analysis and convergent validity and Cronbach’s Alpha to assess how effectively PHA and SIS are used in practice across multiple chemical plants. Research examined performance factors including barrier controls and organizational behavior and their relationship to PHA and SIS effectiveness in preventing industrial accidents and losses during process design and implementation.
Results: Results showed that PHA and SIS were in an agreeable range with positive ratings overall, however performance factors grouped based on barrier controls and organizational behavior had only moderate positive relationship showing there exists a gap in PHA and SIS contributing factors which may directly or indirectly cause industrial accidents in chemical process industries. Study concluded that although both PHA and SIS are widely applied and generally effective, shortcomings in barrier-control performance and organizational behavior still leave residual risk that can lead to accidents, reinforcing this course’s emphasis on safety culture and human-error control and override management and field verification of safety layers as essential complements to technical SIS design work.
Be inspired by leading Safety Instrumented Systems achievements. Register now to build the skills your organization needs for HAZOP-LOPA-SIL methodology and lifecycle management excellence!
