What is positive isolation in plant?

Positive isolation is a method of Isolation where there is Zero potential of energy at the workplace.

• All Hazardous Energy has been identified
• All are isolated at the source
• Residual Energy has been eliminated.

eg. Electrically Isolated at the Transformer, earth applied, and fuses removed.

eg. Mechanically Isolated at the Pump, valve closed, blanked-off. Line drained, purged, etc