Risk matrix and fault tree probability
CSP written lesson, 9 min read. CSP Domain 3: Risk Management
AI-drafted from the cited rules and fact-checked against them. Study aid, not site-specific safety advice. The official rule controls.
What you'll learn
- Explain what a Risk Assessment Code combines and how to read one
- Match a RAC to a risk level using the standard's matrix
- Apply the AND gate formula to independent events
- Apply the OR gate formula to independent events
- Recognize when simple gate formulas do not apply
What this lesson covers
This lesson shows how a military system safety standard turns severity and probability into a Risk Assessment Code, and how fault tree AND and OR gates combine event probabilities. It covers the formulas, the independence assumption and the arithmetic slips that cost points on the exam and mislead real analyses.
This lesson is included with a pass
Written lessons come with every CSP pass, along with the video lessons, the question bank, mocks and the tutor. $80 per exam or $143 for all three, for 180 days.
Try the free risk matrix and fault tree probability practice questions