Syllabus - Computer Aided Risk Analysis (FT 602)

Fire Technology & Safety Engineering

Computer Aided Risk Analysis (FT 602)

VI-Semester

INTRODUCTION

Concept of Risk, Definition, Accepted & impressed risk, Perception & Quantification Risk, Acceptance Criteria, ALARP, Cost benefit analysis, Component of risk, Strategies of risk control, Principles of risk management, Loss control, Degree of hazards, Elementary reliability Theory, Systems & accidents.

RISK ASSESSMENT

Introduction, Basic quantitative risk assessment (QRA), Principles of QRA, Probability theory, Set theory and boolean algebra, Use of boolean algebra and cut sets, Combination of frequencies, Logic tree approach, Fault Tree Analysis (FTA), Principles and Symbol and Procedure of FTA, Event Tree Analysis (ETA), Quantification of event tree, Quantitative risk assessment, Criteria of risk acceptance, Types of consequences.

TECHNIQUES AND APPROACHES

Introduction to HAZOP, Conducting a HAZOP study, Computerized reporting system, HAZOP of batch process, Extension of HAZOP, Application of HAZOP to human reliability, Failure mode and effect analysis (FMEA), Methodology of FMEA, Critically analysis, Corrective action and follow up.

ACCIDENT DATA ANALYSIS

Introduction, Type of accident & incident data, Collection of accident & incident data, Legal requirement to notify accident & incident, Use of accident & incident data, Accident, Incident, Risk assessment data, Use of Computer, Job safety analysis (JSA), Principle and procedure, Summary of risk assessment methods and comparison.

STOCHASTIC MODEL

Fire growth model, description assumption, Scenario, Output variables, Stochastic input variables, Response surface for maximum temperature, Calculation of time to untenable conditions, Calculation of COHb value, Fatality caused by heat, logarithm of time untenable condition, Calculation of reliability index.

Course Objective

To learn about the basic concept of risk and its management in an organization. To teach about popular risk assessment method used in different types of industry. To learn about application and limitation of hazard and operability study and failure mode effect analysis. To learn about the collection application and types of accident data in different types of industries. To learn about fire growth model and their application in calculating reliability index.

Course Outcome

1. Graduate will able to explain basic concept of risk and its management. 2. Graduate will able to apply Boolean algebra and cut sets in different risk assessment methods. 3. Graduate will able to demonstrate HAZOP study for a process industry or its distinguish part. 4. Graduate will able to analyze accident and incident data for risk assessment procedure in an organization. 5. Graduate will able to explain fire growth models and scenario for probable fire scenes.

Practicals

  • Calculation of individual risk and fatal accident rate as theoretical risk factor

  • Preparing the risk matrix for an organization

  • Application of Hazard study methods to a raw gas holder

  • Application of Hazop study on an oil vaporizer

  • Application of Hazop study on ethylene oxide sterilizer

  • Application of Fault tree analysis to a chemical reactor

  • Determination of Safety Integrity level by using risk parameter chart for a given sample

  • Determination of safety integrity level by using SIL class software with risk parameter chart

  • Evaluation of preliminary safety instrumented system (SIS) design using SILclass software tool

Reference Books

  • Process Safety Analysis- An introduction, Bob Skelton, Gulf Publishing Company Houston, Texas.

  • Safety Analysis- Principles and Practices in Occupational Safety, Second Edition, Lar Harms- Ringadahl, CRC Press

  • Safety at work, John Channing , 8th Edition, Routledge Taylor & Fracis Group Landon & New York.

  • Risk Analysis in Building Fire Safety Enginneering, A M Hasofer, V R Beck, ID Bennetts, Elsevier.

  • Practical Hazops, Trips and Alarms, David Macdonald, Elsevier