Practical Hazops, trips and alarms

THE WORKSHOP

This workshop concentrates on awareness level training for managers, engineers and technicians in the practical application of hazard and operability studies (known as HAZOPS). Hazops are widely used for identifying deviations from design intent in manufacturing processes and for assessing the potential consequences, particularly where there are risks of harm to persons, then environment or assets. The techniques are fully recognised and recommended by legislators, regulators, insurance companies and other professional institutions.

Hazops are applicable at both the design stage and throughout the life of an operational plant where they support the validation of the plant safety case. Hazops are a valuable tool when considering modifications and upgrades to existing plant. The workshop introduces the basics of hazard study methods and includes training in risk assessment methods using FMEA and Fault Tree Analysis (FTA). It presents Hazops in the context of related plant and control system design activities. Later stages of the workshop introduce the principles of alarm management and safety instrumented systems to promote an integrated approach to protection systems. Consequently this workshop will be of interest to process engineers and instrumentation specialists alike.

WHAT IS INCLUDED?

  • Receive a certificate of attendance in support of your continuing professional commitment
  • All workshops include the associated hardcopy technical manual
  • Printed workshop handouts
  • Lunch and refreshments
  • Interact and network with workshop attendees and experienced instructors
  • Practical, industry driven content to assist you in your continuing professional development (CPD)
  • Attendees automatically become IDC subscribers and receive exclusive deals and technical content every month

WHO SHOULD ATTEND?     

  • Commissioning engineers
  • Electrical engineers
  • Instrument engineers
  • Loss prevention officers
  • Plant managers
  • Plant supervisors
  • Process control engineers
  • Process maintenance technicians
  • Process plant engineers, technicians and supervisors involved in new plant projects or in the modification or upgrading of existing plants
  • Project managers and planners seeking an awareness of the role of Hazops in overall safety management 
  • System integrators who are likely to be participants in Hazops or who will be asked to engineer safety control systems
  • Trainee Hazop team leaders 

The workshop serves as an introductory course for potential Hazop participants and for project managers. It should be seen as a preparation for the detailed level of additional training required for the duties of Hazop team leaders.

CONTENT SUMMARY

INTRODUCTION TO HAZARD STUDIES

  • Introduction to hazards and risks
  • Safety management principles; risk assessment and risk reduction
  • Concepts of ALARP and tolerable risk
  • Regulatory frameworks and examples from EU, USA, Australia, RSA
  • Methods of identifying hazards
  • Methods of assessing hazards 

HAZARD STUDIES AT LEVEL 1 AND LEVEL 2

  • Life cycle model for hazard study levels
  • Hazard study1: concept and definition phase - methods
  • Hazard study 2: design and development phase - tools and checklists
    Practical exercise: level 2 hazard study example

RISK REDUCTION MEASURES

  • The concept of “equipment under control”
  • Failures of operators and control systems as contributors to hazards
  • Layers of protection
  • Process and operational safety measures
  • The role of alarms in safety, principles of alarm management
  • Safety instrumented protection systems, principles of separation
  • The role of Hazops in defining alarms and trips

HAZARD STUDIES AT LEVEL 3: HAZOP METHOD

  • Introduction to IEC 61822: application guide for Hazops
  • Hazop study procedure for the design and development phase
  • Purpose, context and outcomes of the Hazop
  • Principles of guide word examination procedure
  • Design representation and selection of elements for study
  • Study procedure and examples
    Practical exercise: trial Hazop study and recording of results

PLANNING AND LEADERSHIP OF HAZOP STUDIES

  • Relationship to project phases
  • Preparatory work
  • Roles and responsibilities of the Hazop team
  • Duties of the study leader
    Practical exercise: Hazop team trial study and report

SAFETY INSTRUMENTED SYSTEMS (SIS)

  • Principles of risk reduction by instrumented protection systems
  • Introduction to standards IEC 61508 and IEC 61511
  • The safety life cycle model and the role of hazard studies
  • Specifying SIS requirements from the hazard studies
  • Meaning of safety integrity and the SIL ratings
    Practical exercise: determine the SIL requirements of an SIS application

HAZARD ANALYSIS METHODS

  • Principles of FEMA
  • Principles of Fault Tree Analysis (FTA)
    Practical exercise: FTA for process control problems

KEY FACTORS IN THE CHOICE OF PROTECTION SYSTEMS

  • Technology choices and their implications for cost
  • Programmable safety systems and certification of equipment
  • Issues of reliability and redundancy
  • SIL ratings versus cost
  • Nuisance trips versus safety availability

EXERCISE IN CONVERTING HAZOP OUTPUT TO ALARM AND TRIP REQUIREMENTS

  • Examples of requirements specifications
  • Examine and use the latest software tools available for
  • Hazard study worksheets and lifecycle records
  • Determination of SIL ratings
  • Calculation of trip system reliabilities
    Practical exercise: Hazop report and specification outputs

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