sil-calculator
Safety Integrity Level calculation skill for SIF design and verification per IEC 61511
npx skills add a5c-ai/babysitter --skill sil-calculator --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# SIL Calculator Skill ## 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 ```yaml sil-calculator: determination-methods: - risk-graph - lopa - risk-matrix failure-databases
- Purpose
- Capabilities
- Usage Guidelines
- When to Use
- Prerequisites
- Best Practices
- Process Integration
- Configuration
- Output Artifacts
What does the sil-calculator skill do?
Safety Integrity Level calculation skill for SIF design and verification per IEC 61511
How do I install it?
Run `npx skills add a5c-ai/babysitter --skill sil-calculator --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From a5c-ai/babysitter, a repository with 1,642 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.