Mechanical Isolation
Mechanical isolation prevents movement, flow, pressure, or stored mechanical energy from reaching equipment or personnel during work.
What this term means in maintenance
Mechanical isolation prevents movement, flow, pressure, or stored mechanical energy from reaching equipment or personnel during work.
Mechanical-isolation methods
Methods may include:
- Blinds
- Spades
- Disconnection
- Blocking
- Chocking
- Pinning
- Double block and bleed
- Physical restraint
- Valve isolation where permitted
Practical example
A raised conveyor section is mechanically blocked before work beneath it.
Verification
The isolation should be checked against drawings, field condition, pressure, movement, and stored energy.
Isolation quality
The selected method should reflect the material, pressure, consequence, and applicable procedure.
Common mistake
Relying on an actuator or control signal without physical restraint can allow unexpected movement.
How this term differs
Mechanical Isolation is physical prevention of movement, pressure, flow, or stored mechanical energy. It is related to Energy Isolation, Electrical Isolation, and Lockout Tagout, but these terms describe different records, measures, roles, strategies, or decisions and should not be used interchangeably.
Related concepts
Related maintenance terms
Keep exploring connected CMMS, reliability, and maintenance planning terms.
Energy Isolation
Energy isolation is the physical separation and control of hazardous energy sources before maintenance, inspection, or entry work.
Line Breaking Permit
A line breaking permit controls the opening, disconnection, or disturbance of piping and equipment that may contain pressure, chemicals, steam, gas, or hazardous material.
Lockout Tagout
Lockout tagout, or LOTO, is a controlled process used to isolate hazardous energy and prevent unexpected equipment startup or energy release during work.
Glossary FAQs
- What is mechanical isolation?
Physical prevention of movement, flow, pressure, or stored mechanical energy.
- What methods are used?
Blinds, blocks, pins, disconnection, restraints, chocks, and approved valve arrangements.
- Why must isolation be verified?
Control devices may fail or residual pressure and movement may remain.