Fault Tree Analysis Probability Calculator
Introduction & Importance
Fault Tree Analysis (FTA) is a deductive, top-down method used to analyze the reliability of a system. Calculating probability in FTA is crucial…
How to Use This Calculator
- Enter the event name and its probability.
- Select the type of event (OR or AND).
- Click ‘Calculate’.
Formula & Methodology
The probability of an OR gate is calculated as 1 – (product of probabilities of all inputs). For an AND gate, it’s the sum of probabilities…
Real-World Examples
Case Study 1
Event: System failure
Probability: 0.05
Type: OR
Inputs: Event A (0.02), Event B (0.03)
Case Study 2
Event: System failure
Probability: 0.1
Type: AND
Inputs: Event C (0.05), Event D (0.05)
Data & Statistics
| Event | Probability | Type |
|---|---|---|
| Event A | 0.02 | OR |
| Event B | 0.03 | OR |
| Event | Probability | Type |
|---|---|---|
| Event C | 0.05 | AND |
| Event D | 0.05 | AND |
Expert Tips
- Always round probabilities to two decimal places.
- Ensure all inputs are independent.
Interactive FAQ
What is an OR gate?
An OR gate is when an event occurs if any of its inputs occur.
What is an AND gate?
An AND gate is when an event occurs only if all of its inputs occur.