Risk Assessment Methods
Formal risk assessment methods beyond the basics: risk vocabulary, perception and risk criteria, choosing a method under the General Duty Clause, OSHA PSM 1910.119(e), EPA RMP, ANSI/ASSP Z10.0 and Z590.3 and IEC 31010, job hazard and task analysis, risk matrix design and calibration, what-if and checklist reviews, HAZOP, FMEA and FMECA, bowtie analysis and critical control management, fault and event trees, LOPA and safety integrity levels under ANSI/ISA 61511, quantitative risk assessment with F-N criteria and ALARP cost-benefit, and managing assessments with a capstone workshop. Practitioner introduction; not HAZOP facilitator or SIL certification.
HSE-223 12 lessons · 6 h 4 min
Offered by HSM University · Safety Training
This is the American version of this course. See the Canadian version.
What you'll learn
- Distinguish hazard, risk, frequency and probability, and explain how risk criteria and ALARP are used to judge risk.
- Explain how the General Duty Clause, OSHA PSM 1910.119(e), EPA RMP, ANSI/ASSP Z10.0 and Z590.3 and IEC 31010 shape the choice of risk assessment method.
- Prepare a job hazard analysis using hierarchical task analysis, energy-based hazard descriptions and before-and-after risk ratings.
- Design and calibrate a risk matrix with numerical, logarithmic categories and explain its main limitations.
- Plan and record a what-if, checklist or combined what-if/checklist review and track its recommendations.
- Take part in a HAZOP by applying guidewords to nodes with a written design intent and judging the independence of safeguards.
- Complete an FMEA, calculate risk priority numbers and explain why action priority weights severity first.
- Build a bowtie with valid barriers and explain how critical control management verifies those barriers.
- Calculate simple fault tree and event tree results, identify minimal cut sets and allow for common cause failure.
- Carry out an awareness-level LOPA calculation and relate the required risk reduction to safety integrity levels.
- Interpret individual and societal risk results from a quantitative risk assessment and apply cost-benefit reasoning within ALARP.
- Manage risk assessments as a system, counter common biases in workshops and combine several methods on one facility.
Course content
12 lessons · 6 h 4 min total · final exam
- 1 From hazard to risk: definitions, perception and risk criteria 30 min · quiz
- 2 Choosing a method: legal duties, standards and the technique toolbox 29 min · quiz
- 3 Job hazard and task analysis in depth 32 min · quiz
- 4 Risk matrices: design, calibration and limits 31 min · quiz
- 5 What-if and checklist reviews 31 min · quiz
- 6 HAZOP: nodes, guidewords and deviations 31 min · quiz
- 7 FMEA and FMECA 30 min · quiz
- 8 Bowtie analysis and critical control management 31 min · quiz
- 9 Fault tree and event tree analysis 32 min · quiz
- 10 LOPA and safety integrity levels 28 min · quiz
- 11 Quantitative risk assessment, tolerability and ALARP 29 min · quiz
- 12 Managing risk assessments, human factors and capstone: a chemical storage workshop 30 min · quiz
- E Final exam 20 questions
Requirements
Recommended background. You can start any course at any time.
Description
Formal risk assessment methods beyond the basics: risk vocabulary, perception and risk criteria, choosing a method under the General Duty Clause, OSHA PSM 1910.119(e), EPA RMP, ANSI/ASSP Z10.0 and Z590.3 and IEC 31010, job hazard and task analysis, risk matrix design and calibration, what-if and checklist reviews, HAZOP, FMEA and FMECA, bowtie analysis and critical control management, fault and event trees, LOPA and safety integrity levels under ANSI/ISA 61511, quantitative risk assessment with F-N criteria and ALARP cost-benefit, and managing assessments with a capstone workshop. Practitioner introduction; not HAZOP facilitator or SIL certification.