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CONTENTS
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PRA-Guided Maintenance
Electrical Troubleshooting
Quiz
Making Better Plays
NEC in the Facility
Safety
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About This Newsletter
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This twice-a-month
e-newsletter is brought to you from the
publisher of EC&M magazine. MRO Insider addresses topics such
as:
Working with management and supervision
National Electrical Code® on the production floor
Safety procedures and programs
Troubleshooting techniques
Equipment maintenance and testing tips
Managing motors and generators
Trends in training and education
Managing energy use
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Advertising
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To find out
how to advertise in this newsletter, e-mail David Miller or call him at
(312) 840-8487.
The designations "National Electrical Code" and "NEC" refer to the
National Electrical Code®, which is a registered
trademark of the National Fire Protection Association.
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Maintenance
PRA-Guided
Maintenance
Manufacturer-suggested maintenance intervals are good
starting points, but they aren't based on your constraints and
resources. Unless you're in an ideal situation, you have to decide what
to maintain, how much maintenance to perform, and how often.
If uptime is your primary goal, then you could make these choices
based on the risk of downtime. Probability Risk Assessment (PRA)
is a tool for doing that. An excellent resource for understanding and
applying PRA is the IEEE Gold Book, Standard 493, Recommended Practice
for Design of Reliable Industrial and Commercial Power Systems.
To read more on this story, visit EC&M's Web
site.
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Repair
Electrical
Troubleshooting Quiz
You just came off a facility outage and are looking at
the cable testing trends. In a large percentage of these, you can see
the telltale slope change that indicates insulation integrity has
entered the rapid decline phase.
You know this means the cables need to be scheduled for replacement,
and you requested an outage for that purpose. Management responded by
"asking" you to explain why these cables have suddenly become such a
problem. A production manager even stopped by your office and remarked,
"All those cables have been working just fine for a long time. Your
people must have done something during that last outage to wreck
them." How can you answer management's question, and how can you
answer the
sentiment expressed by this production manager?
Visit EC&M's
Web
site to see the answer.
Making Better
Plays
We can borrow a technique from the best sports teams:
post-game review. Video cameras are inexpensive and commonly found on
cell phones. Your entire team can learn from a video of an actual
repair
in the field.
Some things to look for include:
- Safety practices. Use of PPE (or not), lockout/tagout,
mechanical isolation, etc.
- Efficiency. Number of trips for parts and tools, work
methods, etc.
- Troubleshooting. For example, was it methodical?
This technique works only when people have proper respect for each
other. Sports coaches don't use this to catch someone doing something
wrong, but to help the players see how they might do things better. Add
to that bulleted list this item: teamwork.
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Motors and Drives Solutions
Motors and drives are
critical elements of most machines. Visit the Fluke solution center as
a
resource for all your motor and drive issues. Here you will find
application notes, case studies, an on-line discussion board, videos
and
other resources to help you deal with these complex and important
issues. www.fluke.com/motorsdrives
Operation
NEC in the
Facility
If you have overhead service conductors, do they comply
with the NEC, Art. 230, Part II? For example, they must be of
sufficient
capacity to handle the load. If you've added or upgraded service
equipment, this may no longer be the case. While load diversity can
prevent an immediate problem, a load usage change can produce an
unpleasant surprise.
What about clearances? Are these conductors at least:
- 8 ft above the rooftops of buildings?
- 10 ft above grade at the service entrance?
- 18 ft above driveways and parking lots?
To read more on this story, visit EC&M's Web
site.
Safety
Protecting your eyesight should be a high priority.
Your
primary means of defense is to always wear eye protection any time
you're on the job and not in an officially designated break area.
Don't allow fallacious logic to guide your thinking on this. For
example, whether you are on the clock or not has nothing to do with the
level of eye hazard in an area.
It's not about whether you “have to” wear eye protection. It's
about protecting your eyesight.
To read more on this story, visit EC&M's Web
site.
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