SIL Calculator Skill
SkillMediaSafety Integrity Level calculation skill for SIF design and verification per IEC 61511
Instructions available. Your AI can read the instructions. Execution depends on the setup they require.
Account requirements not reviewed. Check the skill instructions before use; ahel provides instructions and does not run this skill.
Add ahel to your AI once: Claude, ChatGPT, Cursor, Claude Code or Codex. Then ask it to use this.
Then ask your AI: use the SIL Calculator Skill skill
What this skill tells your AI
The instructions your AI receives, as published by a5c-ai/babysitter in library/specializations/domains/science/chemical-engineering/skills/sil-calculator/SKILL.md and read by ahel’s review.
Purpose
The SIL Calculator Skill determines Safety Integrity Levels for Safety Instrumented Functions and verifies SIF designs meet required risk reduction per IEC 61511.
Capabilities
- SIL determination (risk graph, LOPA, risk matrix)
- PFDavg calculations
- Proof test interval optimization
- Common cause failure analysis
- Hardware fault tolerance verification
- Diagnostic coverage assessment
- Systematic capability evaluation
- SIF verification calculations
Usage Guidelines
When to Use
- Determining SIL requirements
- Designing safety instrumented functions
- Verifying SIF performance
- Optimizing proof test intervals
Prerequisites
- HAZOP recommendations available
- Risk criteria defined
- Component failure data available
- Architecture selected
Best Practices
- Use consistent methodology
- Document all assumptions
- Consider common cause failures
- Verify systematic capability
Process Integration
This skill integrates with:
- Safety Instrumented System Design
- HAZOP Study Facilitation
- Pressure Relief System Design
Configuration
sil-calculator:
determination-methods:
- risk-graph
- lopa
- risk-matrix
failure-databases:
- OREDA
- SINTEF
- exida
Output Artifacts
- SIL determination reports
- PFDavg calculations
- SIF specifications
- Verification reports
- Test interval recommendations
Signals
- GitHub stars
- 2k
- Forks
- 112
- Last commit
- Sep 2026
Advanced
- Item type
- skill
- Key
sil-calculator- Source
- github.com/a5c-ai/babysitter