- Opening remarks by Ed
Barnett-President. Ed called the meeting to order and announced that Jim
VanEmmerik would be stepping down from 2nd Vice Presidents
position. Ed also announced that his tenure as President would be over
after the Tucson meeting. Voting to fill open positions would take
place on the 16th.
- Tiffany Shaw gave the
treasury report and announced that the group would be voting to raise
the user and vendor registration fees to $100 and $200 respectively to
cover future meeting expenditures in an effort to keep group solvent.
- 9:15 am
- Group Discussion
9:30 am - 10:45 am
- DCS-Rob Marnell gave
presentation of the Col Creek 1570 dragline relocation
11:00 am - 12:00 pm
- New DC-EXX IGBT dragline
excitation and control-Bill Horvath, TMGE Automation Systems
1:00 pm - 1:45 pm
- Vendor commercials
2:00 pm - 2:30 pm
- Remote Racking- An
alternative to PPE as it relates to Arc Flash Protection. –Suella
Spencer-VP, Switchgear Solutions Inc. Robert Stevenson-President
Switchgear Solutions, Inc.
2:30 pm - 3:30 pm
- Energy Harvesting-Bill
3:45 pm - 4:15 pm
- Maintaining Medium Voltage
Switchgear-David Gohill, AZZ/Central Electric Manufacturing.
- Ed Barnett opened
meeting. Announced that normal progression was for current committee
members move up to fill vacant positions. Asked for nominees for
President. Jed Jensen was nominated and seconded. Attendees voted and
Jed Jensen was voted in as President. Floor was opened for nominees to
fill position of 1st Vice President with Jim VanEmmerik
stepping down. Aaron Spielman was nominated/seconded and voted in by
attendees as 1st Vice President. Floor opened for nominees
for 2nd Vice President. Travis Sondrol was
nominated/seconded and voted by attendees for 2nd Vice
President. Floor opened for Secretary position. Ross Lenson was
nominated/seconded and voted in as Secretary. Ed also asked for a vote
granting the Executive Board to consider raising the meeting fees for
attendees and vendors. Vote was passed to allow this consideration
- Group Discussion summary
from discussion held on the 15th
9:15 am - 10:45 am
- C-Series and Centurion
Technology update-Tom Barnes, Steve Williamson; PH
9:45 am - 10:45 am
- Arc Flash Hazard Analysis
and DC arc flash discussion- Tom McGibbon, General Electric
10:45 am - 11:45 am
- Technical Developments in
the Measurement and Analysis of Commutator Deformation-Roy Douglas,
Carbone of America
11:45 am - 12:00 pm
- Closing remarks by Ed
12:00 pm -1:00 pm
- Steering Committee meeting
Programs in place at
mines represented in our group, ranged from no formal program to
a somewhat comprehensive system of identification of and
precautions needed at each potentially hazardous location.
40 cal “Beekeeper”
suits being used at some locations.
being used at some locations.
MSHA input on this
topic to date is minimal if any.
All agreed on the
need for further study and recommendations needed regarding DC
designs, including “Arc Resistant” and remote racking are
available in the market. These systems may minimize or eliminate
the need for Arc Flash/Blast PPE at some locations.
available for the purpose of determining the potential for arc
flash/blast at any electrical switchgear. A program from
EastPower.com is currently being used at Westmoreland/Colstrip.
One mine reported a discovery they made regarding their high-voltage
rubber gloves. They were using Class II gloves, which they assumed
were rated at 20,000 volts, as required by 30 CFR 77. Upon
further investigation, it was discovered that the Class II gloves
being used were tested at 20,000 volts, and rated at
17,000 volts. This operation has now switched to Class III gloves,
which are tested at 30,000 volts, and rated at 26,500
One member of our group spoke about a national survey conducted by
Worker’s Compensation. One result of this survey determined that 16%
of employees are “disengaged” while at work, i.e. not paying
attention. We all know that the majority of accidents are due to
human error, and are preventable.
vendor in our group recounted an experience he had at a mining
operation. He witnessed a lock-out/tag-out procedure in action.
Multiple electricians were involved, and all followed the procedure
to a tee.
Toshiba has a NEMA 3R motor drive, capable of up to 1500 HP
available on the market. This enclosure is designed to free stand in
an open environment, with out any building enclosure.
Wireless Communication systems and Production Monitoring systems.
One operator reported on the process they went through in getting a
large synchronous, driving a dragline generator set, balanced after
the motor was repaired. In the end, the imbalance/vibration
experienced appeared to be electrical resonance problems as opposed
to mechanical weight distribution.
Locations: anyplace warm.
Wireless communications and monitoring systems.
Arc Flash/Blast-specifically DC.
Medium voltage arc-resistant switchgear.
observation made: The discussion groups can easily get imbalanced as to
representation of vendors and miners in any given group. We would
suggest that we number off separately as vendors and miners. Equal
representation in each discussion group would result in more
- Man lift went
over a bank when operator moved machine to get better reception
on cell phone
- Saffron Mine?:
electrocution of contractor for termination: untrained
- Arc Fault study
and implementation: Phelps Dodge. Is a difficult process IEEE
working on the DC components (by 2009) area restrictions and
- Black Berry and
Cell Phone use: banning use on many mine sites. If caught
using the person is dismissed or removed from property.
- Group had
various opinions of drug testing.
- Wade Hart RTEA:
“Take 5” program uses positive reinforcement with random checks.
- P&H: AC shovel
- Machine health
- Fault data.
- Arc Flash
(provided by vendor).
- GPS technology
for pit coverage. Two way communications (mesh).
- Comm. Profiling
conservation. High bay fluorescent lighting.
regarding work force.
- Scheduling of
WMEA (Automation Fair).
- How do we get
more miners involved.
Discussed fatality at San Miguel mine. An oiler appeared to be
struck bya shoe of dragline while moving power. May have been other
contributing medical factors of the victim. This led to a discussion
of various locations boom radius and boarding policies.
Reviewed the electrical fatality at a Peabody location where an
electrician was electrocuted by a generator back feed on a
dragline. A Peabody representative in the group reported that they
are implementing the following :
Using a device called a V-watch. It attaches to your shirt and
alarms when in the presence of high voltage.
Using a Kirk Key system.
Other companies using self grounding switches on switch skids.
Tinto reported using FR clothing and “Bee suit” for certain
Future Meeting Topics:
Startco has a new motor
protection relay that is remotely adjustable and has a remote
tripping device to trip a breaker etc. ahead of the contactor. You
can set motor protection low while working on the system.
DCS: Everyone needs to
get involved in Arc Flash education and getting protection
equipment. Started covering in MSHA retraining.
RioTinto: there has
been a lot of talk about AC arc flash but nothing on DC equipment or
Laren: is everyone
doing pencil volt neutral to set neutral on generators. This is not
a safe way and it is not recommended due to rotating equipment and
voltage that are present.
RioTinto: take a few
minutes to look at the job. Don’t rush into something and get into
Laren: Mine hired a
OSHA inspector. He does mine inspections and reports back to the
mine. Decides what applies-different point of view.
RioTinto: Getting new
AC drive haul trucks. Going to need training for electrical group.
Getting upgrade on 2300 to Centurion drives. Improves efficiency
and gets rid of oil fire hazard.
Laren; IMPRO seals on
pillow block bearings. Starting to use on motors. Keep oal dust
out of motors. Made with a bronze bushing.
Laren: is everyone
doing double tests on motors? This is a power factor test is done
on transformers and could tell motor efficiency.
Rio Tinto: Looking into
upgrade VCB and substation to they will auto ground. Line power
type of equipment.
DCS: reported some
problems with this if the vacuum bottles failed closed and the
switch goes grounded. The older bottles usually failed closed.
– small town drivers need to pay attention in the city changes in
environment require extra attention to maintain safety.
Jeff – Arc Flash at Safford mine using a 600v meter on a 4160v
Chet - San Miguel fatality due to an employee running into the shoe
of a dragline resulting in a severe head injury.
Bill – An apprentice in Robinson, NV reached into an open substation
and was lucky to get away with only a burned arm.
Mike – involving the wives could help to promote safety at work.
Problems and Solutions:
Jeff – recruiting and training employees is a huge problem.
Greg – Barrick has an apprentice program that is helping them train
– paying the employees a living wage so they can afford to live in
Gillette during their training period will help make it possible for
employees to come in from out of town.
Greg – contractors on the mine are sometimes not watched and can be
dangerous due to lack of training and communication it is too easy
to assume they know what is expected and safe.
Future Meeting topics:
– have some trade schools present.
Mike – work on increasing attendance from the mining community.
Bill – post the agenda sooner to help attendance.
– Plant modifications and upgrades.
Garnett - Fire Alarm systems.
Jeremy Schantz: .Eaton MSHA bulletin POG-2 recommendation factory
service for low/medium voltage molded case breakers. Purpose is to
eliminate 3rd party repairs that may not bring rebuild up
to OEM specifications. Eaton provides that service. 1yr. warranty.
Tinto Energy America continues to progress with Arc Flash. No DC
calculation yet. Will start on AC side of mobile equipment.
Jack Easton of Americable talked about the use of site to site
monitoring system in regard to the Crandle Canyon accident in Utah.
They have fire proof cable to meet this need.
Topics for future meetings:
presentation on the AC gearless dragline in November 2008; possible
presentation on crowd system that eliminates the need for crowd
TMGE: Bill Horvath: selecting proper frequency drive for large pump
motor applications: also a presentation on the 1st IGBT
control with end user to assist in presentation
Falkirk has been placing Arc flash labels on breakers and have
gotten their electrician totes that hold the various levels of Arc
Flash gear. Also to limit access to M-G set they have fenced them
in and chained of the middle section a key under glass is there for
and emergency situation.
Patterson would like all to review your storage methods for rotating
equipment there have been several catastrophic failure on rotating
equipment not stored properly. Moisture can get into glass banding
go through freeze thaw cycles and degrade in a matter of hours after
installation the equipment fails. He suggests a dry warm
environment and if you are not sure cut and test banding it is
destructive testing but what it prevents is worth it.
has new Ac system running on a Dragline it utilizes IGBT’s and they
are putting it on another dragline a 680 in California they are
utilizing OEM as a manufacturer.
Americable now offers its “Mine Cable Safe Program” They will come
out inspect all cable and applications and give you detailed reports
with suggestions on what they see could cause a potential problem,
they will then come back for a consult and make sure the mine
repairs and changes will suffice. They will also watch and train
personal on cable handling.
Rich Hall mentioned that his company now has six employees with the
24 hour MSHA training. He also demonstrated a breakaway lanyard for
items that are hung around your neck, such as name tags.
Rich related a story of one company that had a trench fatality where
the protective liner was not braced properly. Not long after that
fatality another operation was been done in a properly braced trench
and the employee (same company) went beyond the protective enclosure
and was also fatally injured by the walls caving in.
Hogan of Luminant asked what folks are doing in the HV rooms of
draglines regarding arc flash protection. Is anyone using arc
blast chutes to control the direction of an arc blast? If anyone
has any ideas, please see Max.
Jace Rush with P&H mentioned that an accident occurred when an
employee was running along side a small back hoe. He tripped and
fell into the machine, resulting in his left leg being amputated.
Innovations and Technology:
Toshiba has a new VFD that is rated for outside applications with no
air conditioning needed. It is the G9 series which replaced the
G7. Horsepower range is 1 to 400 HP
New P&H 4100 BOSSC AC shovel is being built in Canada.
Commutator profiling @ speed and voltage – we will see a
presentation this morning
Americable has TPU cable available in several colors
Energy scavenging, which we saw a presentation on yesterday.
Future Meetings & Presentations:
group felt that the meeting locations mentioned for future meetings
discussion centered on how to attract more of our Canadians friends
to our meetings. One suggested assisting with the Edmonton meeting
that we orient some of the presentations to pertinent oil sands
Another suggestion to boost miner presentation is to move the Nov
meeting so as not to coincide with the Rockwell Automation fair.
Rich Hall volunteered to do a presentation on how electrical
adjustments affect machine performance. This would be a follow up
to a presentation the he did a year ago or so.
Return to Meeting
About Us |