Last weeks
newsletter addressed two electrical accidents which happened
recently in the Maritimes. I had some feedback to the email I
think will be beneficial to share and just clarify my standpoint
on the matter. One concern was that everyone was tarred with the
same brush by stating that many in Canada’s electrical industry
held “the
somewhat
prevalent
view that arc flash incidents” happen only to our American
friends.
Far be it
from me to suggest that nobody in Canada understands the
importance of electrical safety awareness but there does exist
large segments of the electrical industry who are, to put it
lightly, not very informed when it comes to how devastating an arc
flash incident can be. This runs through all levels, from
industrial to residential. Generally supervisors with an
electrical background have a good handle on what an electrical arc
fault is but a lot of folks out there,
electricians included
still associate the term “arc flash” with “welders eye”.
An Example
of Who’s Ready Now
Yes, large
multi-nationals with operations in both the United States and
Canada are for the most part leading the charge in awareness and
hazard identification. Weyerhaeuser Canada for instance has a
policy that outside contractors who have not been through a arc
flash awareness program may not perform electrical work on
Weyerhaeuser premises. This is a great example of a company going
over and above the bar with its due diligence.
An Example
of Who’s Not
I live in
an area of Western Canada with large amounts of oil activity, when
driving most places down the highway I see hundreds of oil and gas
wells driven by a variety of motor starters and VFDs.
Many times
you will see service workers from various trades doing their thing
at these locations. Sometimes that worker is an electrician. In
all the times I have seen an electrician with cabinet door flung
open, performing whatever tests with his meter,I have yet to see
one wearing an arc rated face-shield or hood .Oft times he or she
has an apprentice also sans face-shield peering over his shoulder.
Safety glasses yes, but to this day no face-shield. I know in many
cases the equipment can not possibly be locked out because the
driven equipment, be it a jack or screw pump is operating.
Many tests can be performed on
locked out equipment and most things can indeed be fully diagnosed
in a de-energized state but some things you just can’t do such as
testing voltage imbalance, current load or troubleshooting an
intermittent control issue.
Table
130.07 (C)(9)(a) of the NFPA 70E 2004 Edition states that when
working on energized equipment rated higher than 240v ( including
voltage testing) the hazard risk category is 2*.
This indicates that in addition to normal PPE
full face
coverage protection and hearing protection are required.
There is
a good reason for this, the short circuit potential of the average
motor starter is more than adequate to melt your face, and not in
that good Jimi Hendrix guitar solo way. It may never happen in
most workers lifetimes but unfortunately someone eventually gets
fried.
Yet why do
I see workers from some of the large industrial electrical service
companies with stellar safety programs not wearing what is
actually
basic
PPE for the task at hand?
The
electrical worker in the ski lift incident failed to adequately
ensure the equipment was de-energized. The apprentice should have
been nowhere near a live cabinet with a drill. That’s clear. But
how did they arrive at their predicament? Did they have a clear
idea of the hazard potential? Given the accidents that occurred I
would be surprised to find out that these two fellows had been
educated within a structured and recurring electrical safety
training program.
A Cash
Grab by Manufacturers of PPE?
Certainly
some organizations have a lot to gain and some of our clients have
voiced suspicions that some of the arc flash awareness training
out there is being conducted by trainers with questionable
background in both electrical knowledge and safety. I have heard
reports of some arc awareness programs consisting a large part of
“experts” trotting out the latest and greatest Arc Wear with
little instruction on actual task procedure or hazard analysis
methodology. Thankfully they are easy to spot. But this
pseudo-safety training really can leave a bad taste in your mouth.
Despite
this a quick glance at page 5 of the NFPA 70E listing the members
of the technical safety committee shows the majority of committee
members coming from manufacturers, utilities, electrical unions
and testing institutes. Canada is represented by a member of the
Ontario
Association of Certified Engineering Technicians and
Technologists. The
members of the Canadian CSA Z462 committee also represent a broad
and balanced representation of industry. Safe
to say the standard was written with the focus of worker safety
paramount but also with an eye to keeping methods of protection
within a realistic framework.
Thanks for
reading and don’t hesitate to forward any questions and/or
feedback you have back to me at
robsmith@canada-training-group.ca
.
Have a
safe day. |