01REQUIRED
Identify Energy Sources
- Identify electrical, mechanical, hydraulic, pneumatic and thermal energy.
- Include gravity, pressure, chemical and stored energy sources.
- Review the machine-specific energy-control procedure.
HSE Field GuideSERNEM Pro SeriesSite validation required
SERNEM
Health and Safety Resources
LOTO Critical Safety Rules
Identify • Isolate • Lock Out • Verify Zero Energy
OSHA 1910.147(c)(6)OSHA · US general industry · Verify local requirements separately
Document · EN
SRN-LOTO-001
Revision 2.0
Content updated
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SERNEM · Check Before StartingPre-Job Check
Energy procedure
All energy sources
Affected employees
Personal locks
Stored energy
Isolation verification
Safe restoration
02REQUIRED
Notify Affected Employees
- Notify affected employees before shutdown and lockout.
- Explain the work scope and expected duration.
- State clearly that the machine must not be restarted.
03REQUIRED
Shut Down Equipment
- Shut down the machine using its normal stopping procedure.
- Prevent additional hazards caused by an uncontrolled shutdown.
- Wait until all moving components have fully stopped.
04REQUIRED
Isolate Every Energy Source
- Place every energy-isolating device in the safe position.
- Physically isolate valves, breakers, disconnects and supplies.
- Never use control buttons as energy-isolating devices.
05REQUIRED
Apply Locks and Tags
- Each authorized employee must apply a personal lock.
- Include the employee name, date and work information on the tag.
- Use an approved group lockbox or hasp for group lockout.
06REQUIRED
Control Stored Energy
- Release pressure, restrain springs and reduce temperature safely.
- Lower or mechanically block elevated components.
- Maintain control when energy may reaccumulate.
07REQUIRED
Verify Zero Energy
- Attempt a normal start to confirm that no movement occurs.
- Perform required measurements using suitable test instruments.
- Return all controls to the safe off position after testing.
08REQUIRED
Restore Energy Safely
- Inspect the area and remove employees, tools and unnecessary materials.
- Each employee must remove only their own lock under the procedure.
- Notify affected employees before restoring energy.
Stop Work Now
Stop work immediately if all hazardous energy sources are not identified
Stop work if energy-isolating devices are not locked and tagged
Stop work if stored or residual energy is not controlled
Do not begin work until zero-energy status has been verified
Never remove another employee's lock outside an approved special procedure
Critical Controls
ALL
Identify hazardous energy sources
VERIFY
Test isolation
PERSONAL
Authorized employee lock
≥1/YEAR
OSHA: energy-control procedure inspection; authorized employee other than the user
Technical Reference · Validation Required
Verify source scope and local requirements
Risk-Based PPE Selection
Safety Helmet — Task-specific head risk
Safety Glasses — Task-matched eyewear
Task-Specific Gloves — Match the energy hazard
Safety Footwear — Task-matched sole
Task-Specific PPE — Based on residual hazards
Select PPE by risk, manufacturer and site procedure; this list is not mandatory for every task.
REQUIRED: work control · REQUIRED IF: binding when applicable · WARNING: hazard alert. Verify legal applicability separately.