A power industry study
found that 54% of errors are a result of inadequate
or missing labels. -- Electric Power Research
Institute Study: "Effective Plant Labeling
and Coding," NP-6209
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The Visually Instructive Workplace
What does it mean to have a
visually instructive workplace?
Needed information is easily seen and available
at
the location where it is needed.
Equipment Labels: All equipment, valves, switches
and machinery should be clearly identified and labeled. Information
on the labels should be complete, accurate and understandable.
For example, if a coal feeder is designated as CCF2-05, don't
label it with just this number. Completely identify it as
"Crushed Coal Feeder CCF2-05".
Process Flow Labeling: Mark all tubing, pipes and
conduits to identify their function and the direction of flow.
Use signs to identify the areas in your plant in which each
step of the process takes place.
For example, the coal feeder area might be identified as:
"Furnace #2 Crushed Coal Feeders". The pipe bringing
coal into the feeder would be identified as: "From Coal
Bin 2-05". And the outlet pipe from the coal feeder would
be labeled, "To Coal Pulverizer 2-05".
Although this is a very simple example, it demonstrates that
anyone could stand by the crushed coal feeders and know exactly
where they are and what is happening in the process,
Tubing, pipes and conduit should be marked at frequent intervals
such that they can be identified (the markings are visible)
from any reasonable location in your facility.
Instrument Labels: All instruments should be identified
with labels. An identifying number, as well as their function
in the process should be identified. Bar codes might also
be used for quick, automatic identification. However, don't
rely on bar codes alone. People must be able to look at the
label and be able to identify the instrument without the aid
of a bar code reader.
Directional Signs (Emergency Evacuation): Make it
easy for people to get around in your facility and find the
areas they need to get to. Don't assume that, because everyone
has worked there for a long time, you don't need directional
signs. In particular, emergency evacuation signs are critical
as people, who need to get out of the building quickly, may
be distracted, confused or disoriented during an emergency.
Safety Signs / Hazard Warnings: Use large,
clear signs and labels to identify hazardous materials,
areas and safety concerns. Identify who can and who can not
enter certain areas. Identify what must be done before entering
certain areas. Provide first aid information, emergency phone
numbers and emergency proceedures.
Don't forget about maintenance. After a few years signs and
labels may become dirty and unreadable. Have a regular, frequent
inspection and maintenance schedule. Clean dirty signs and
labels. Replace missing and damaged signs and labels. Remove
or update out-of-date signs and labels.
Note: Having your own sign
/ label maker helps ensure signs and labels are properly
maintained or replaced, in a timely manner.
Lockout / Tagging: In addition to using lockout tags,
use permanent signs to provide lockout information, lockout
proceedures and safety reminders.
Operating Proceedures: Be sure plant personnel have
the information they need to operate your equipment and machinery.
Post start-up proceedures, shut-down information, process
information and safety information directly on the equipment.
That way they'll always have the information they need for
the correct, safe operation of the equipment and machinery.
Maintainance Information: Post maintenance proceedures
and schedules on equipment and machinery. Be specific about
what should be done. For example, if oil levels need to be
checked weekly, don't post a sign that says, "Check Oil
Levels Weekly". Be specific about what should be done
and when it should be done. The sign should say, "Check
oil level Mondays at 8:00 am".
Storage Information / Warehouse Labeling: Most warehouse
managers are well aware of the importance of proper labeling
and signage. However, don't forget about storage areas outside
of the warehouse or tool room. Any location that is used for
storage, whether temporary or permanent, should be identified
as such. Use signs to present a description of the materials,
tools or equipment that may be stored at that location. Display
the rules that apply to that storage area -- such as "NO
FLAMABLE MATERIALS" or "NO OVERNIGHT STORAGE".
The bottom line is: The best approach is to have the
information people need, at the point where they need it.
This eliminates wasted time caused by someone having to return
to their office or shop to look up the information they need.
It helps prevent mistakes, by having the correct information
readily available at the point of need. It helps keep your
facility organized, saving time and increasing productivity.
And it helps keep your employees safe and healthy.
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