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April 19, 2023 | 2
To protect the persons who intervene on a facility,
to be sure of the energy absence (electricity, fluids,
chemicals and mechanics)
The incidents linked to an isolation absence are
not numerous but are generally of a strong severity
This is an essential step in both the workplace and
at home
WHY THIS RULE?
HAZARD ISOLATIONS
April 19, 2023 | 3
RULE DEFINITION
HAZARD ISOLATIONS
When performing a task on a powered or
pressurized system ensure that isolations have
been validated by the exploitation team and
double check all isolations are in place as per the
isolation plan.
April 19, 2023 | 4HAZARD ISOLATIONS
Exploitation
Maintenance
Efficiency
Corrective maintenance or Preventive maintenanceor Ameliorative maintenance
Responsibility
Time
Responsibility transfer
Efficiency
1 RESPONSIBLE FOR EACH STEP
Responsibility transfer
April 19, 2023 | 5HAZARD ISOLATIONS
Sources and forms of energy that must be isolated:
Electrical energy
Mechanical energy
Water power
Pneumatic energy
Fluids
Ionizing sources
Residual energy (stored energy)
April 19, 2023 | 6
Check isolations prior to working on any powered or pressurized systemIsolation protects people and facilities against the consequences
of: electrical, mechanical energy and pressure energy risks
Wear all prescribed PPEPPE is my last layer of protection against electrical risk.
PPE is provided by Dietsmann and must be kept in good
condition.
I MUST
HAZARD ISOLATIONS
April 19, 2023 | 7
Perform an absence of power and/or pressuretest prior to starting my task
To be sure of the energy absence:
electricity, fluids, chemicals and mechanics
Ensure that the electrical rescue kit is available in the electrical cabinet
The kit consists of: a pair of insulating gloves, insulating stool,
insulating pole and insulating rug. A safety poster with what to
do in case of electrocution is located on the door
I MUST
HAZARD ISOLATIONS
April 19, 2023 | 8
Work on systems that arepowered and/or pressurized
Absence of electricity
Safety Absence of mechanic energy
Absence of pressure
Perform works on energized systems without a dedicated Permit to Work
Isolation is integrated in the Permit To Work
Without authorization, I must not intervene.
I MUST NOT
HAZARD ISOLATIONS
April 19, 2023 | 9
1 Separation 2 Lock out & Tag out
3 Dissipation of accumulated energy
4 Recognition 5 Check
HAZARD ISOLATIONS
AN EFFICIENT ISOLATION FOR A SAFE TASK
5 STEPS
April 19, 2023 | 10HAZARD ISOLATIONS
RESTART THE MACHINERY
When restarting the machinery, here are some steps to follow:
Ensure that nonessential items are removed from equipment
Ensure that equipment components are intact
Check area to ensure that all affected employees are safely
positioned or removed from the area
Notify all affected employees and site supervisor before
reenergizing the equipment
Remove lockout/tagout devices
Reenergize equipment to ensure safe operation
April 19, 2023 | 13HAZARD ISOLATIONS
ISOLATION EXAMPLES
Bad practice
Best practice
Opened cabinetBare live partsFuses left availableNo signals
Closed cabinet
Visible position switch
Laying padlock locking
Signals
April 19, 2023 | 15HAZARD ISOLATIONS
LOCKOUT / TAGOUT SAFETY
ISOLATE ALL ENERGY SOURCES BEFORE MAINTENANCE!
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