Phase 14: Safety Control & Safety Wiring
This phase contains 5 sections and 33 checklist topics. Use the interactive phase page to track your own learning progress.
General topics
- Hazard
- Risk
- Risk reduction
- Normal control vs safety control
- Fail-safe principle
Devices
- Emergency stop
- Safety relay
- Safety PLC introduction
- Guard switch
- Door interlock
- Light curtain
- Safety mat
- Two-hand control
- And 1 more checklist topics
Wiring
- NC safety contacts
- Dual channel
- Reset
- Manual reset
- Restart prevention
- Feedback loop
- EDM
- Contactor monitoring
- And 1 more checklist topics
Later awareness
- Safety categories
- PL
- SIL
- Safety integrity concepts
- Functional safety basics
Practical Field Additions
- Permit-to-work (PTW) purpose and workflow
- Job safety analysis / task risk assessment
- LOTO isolation plan and zero-energy verification
- Safe commissioning authorization and escalation
- Simulated testing versus live energized equipment limitations