2. ISOLATION AND TAGGING
You isolate to stop :
• A motor from switching on (or off)
• A substance such as liquid, gas or powder getting in or
out
• Two hazardous substances mixing
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3. ISOLATION AND TAGGING
You isolate to :
• Allow maintenance or inspection
• Take a piece of plant out of service for a certain time
• Change a process
• Make sure that even isolated plant cannot be started by
mistake somewhere else
• Stop the chance of human error or mechanical failure
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4. ISOLATION AND TAGGING
Isolation of equipment will make sure:
• That it will not start while you are working on it
• All persons working on the machine are protected
• Damage to the equipment is prevented.
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5. ISOLATION AND TAGGING
Isolation points can be :
• battery isolator switches
• air or water system
gate/shut off valves
• electrical switches or any
other physical means of
ensuring personnel can
not turn on the energy
source.
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6. ISOLATION AND TAGGING
A tag is put on an
isolation point to warn
other people not to
change the state of the
isolation point
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7. ISOLATION AND TAGGING
AUMS uses four basic types of tags
• Out of Service
• Personal Danger
• Commissioning and Testing
• Information
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8. ISOLATION AND TAGGING
ISOLATION AND TAGGING
OUT OF SERVICE
These tags are used to prevent
defective equipment being started,
operated or used which may result in
injury to personnel or further
equipment damage.
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9. ISOLATION AND TAGGING
PERSONAL DANGER
A Personal Danger tag provides protection
for personnel working on equipment.
No person shall de-isolate, operate any
switch or valve whilst a personal danger
tag is in place.
The only person who can place or remove
this tag is the person whose name
appears on the tag.
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10. ISOLATION AND TAGGING
COMMISSIONING AND TESTING
This tag gives an employee exclusive
control over the plant operation.
It is used during commissioning,
calibration, testing, inspection and
maintenance when equipment is
required to be in operating mode.
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11. ISOLATION AND TAGGING
ISOLATION AND TAGGING
INFORMATION TAGS
These tags are used to pass on
information which may reduce
inefficiencies, doubling up or constant
reporting.
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12. ISOLATION AND TAGGING
Equipment must be
isolated and tagged
with an OUT OF
SERVICE tag at each
isolation point
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13. ISOLATION AND TAGGING
Switches and valves
must be switched to
the isolated position
and tagged by an
authorised person
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14. ISOLATION AND TAGGING
Each person working
on the equipment
must have a PERSONAL
DANGER tag at each
isolation point
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15. ISOLATION AND TAGGING
ISOLATION AND TAGGING
Before starting work, test the isolation. Discharge any
energy that MIGHT be stored in the system.
Each person must remove his or her own Personal
Danger Tag at the completion of the job or prior to
leaving the work site.
If the task is incomplete, the Out of Service tag remains
on the isolation point.
Always communicate isolation conditions with your
supervisor and the supervisor of the next crew coming
on shift.
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