Efficient Plant October 2017 - 58

feature | solution focus

Motor
Testing

IDs
Pump
Woes

Electrical-signature analysis
detects what other pump
tests couldn't at nuclear
power facility.

A NUCLEAR-POWER-GENERATING
facility in the Northeastern United States
relies on four identical vertical pumps to feed
water to a heat exchanger that cools the sealed
ultrapure water/steam driving the site's turbine
generators. Featuring 30-ft.-long shafts, these
service-water pumps were installed when the
plant was built in the early 1970s. Over time,
two of the four began exhibiting performance
issues. The situation motivated the site's maintenance team to conduct a performance study.

THE APPROACH
The plan was to analyze a number of measurements, including vibration, pressure, and flow.
Since the team also wanted to include electrical-signature analysis as part of the performance study, they contacted Bob Dunn at I&E
Central (ie-central.com, Rochester, NY). The

58

| EFFICIENTPLANTMAG.COM

Using the handheld ALL-TEST PRO On-Line II instrument with wireless Bluetooth technology for
testing procedures allows personnel to stay a safe distance away from energized equipment. ALLSAFE PRO connection boxes can also be installed to further enhance operator safety during the
data-collection process.

company provides on-site predictive-maintenance (PdM) services and supplies industrial
test equipment for use by PdM, electrical,
and reliability professionals. Dunn visited the
power plant and analyzed two of its 350-hp,
480-V motors.

THE PROCESS
Electrical-signature analysis is performed by
connecting current sensors and voltage leads
to the motor, and then capturing high-resolution current and voltage waveforms that can
be analyzed as FFTs (Fast Fourier Transforms)
and raw-waveform data. The resulting data can
provide insight into an entire motor system,
both mechanically and electrically, from the
incoming power through the driven load. This
type of technology actually uses the motor as
a transducer for the mechanical analysis. Any

+

LESSONS LEARNED
 Monitoring your industrial
equipment and evaluating
performance issues before
catastrophic failure occurs
can save costly downtime
and unwanted expenses.
 Performing electrical-signature analysis along with
vibration analysis can
provide more of an indepth look at what is really
going on with equipment.
Making sure you have the
proper tools to perform
these kinds of analyses
is critical to any condition-based maintenance/
predictive-maintenance
program.
OCTOBER 2017


http://www.ie-central.com http://www.EFFICIENTPLANTMAG.COM

Table of Contents for the Digital Edition of Efficient Plant October 2017

Editorial
Implementations
Profitable Reliability Control On Your Horizon
Experts Provide IIoT Insights
Integrating Automation Into Shade Manufacturing
Fluid-Flow Challenges
Looking For Failure In All The Wrong Places
Closer Human/Robot Collaboration
Note These Causes Of Motor Failure
Reliable Pumping Supplement: Food & Beverage Processing
On The Floor
Uptime
IIoT
Pump 'Cavitation' Might Not Be
Never Too Late For Basic Navigation
Audit or Assess? Understand The Difference
A Perfect Pair: Barcodes and Your CMMS
Lubrication Strategies
Products
Ad Index
Showcase
Efficiency Insight
Efficient Plant October 2017 - 1
Efficient Plant October 2017 - Cover1
Efficient Plant October 2017 - Cover2
Efficient Plant October 2017 - 1
Efficient Plant October 2017 - 2
Efficient Plant October 2017 - 3
Efficient Plant October 2017 - 4
Efficient Plant October 2017 - 5
Efficient Plant October 2017 - 6
Efficient Plant October 2017 - 7
Efficient Plant October 2017 - Editorial
Efficient Plant October 2017 - 9
Efficient Plant October 2017 - Implementations
Efficient Plant October 2017 - 11
Efficient Plant October 2017 - Profitable Reliability Control On Your Horizon
Efficient Plant October 2017 - 13
Efficient Plant October 2017 - 14
Efficient Plant October 2017 - 15
Efficient Plant October 2017 - Experts Provide IIoT Insights
Efficient Plant October 2017 - Integrating Automation Into Shade Manufacturing
Efficient Plant October 2017 - 21
Efficient Plant October 2017 - 22
Efficient Plant October 2017 - 23
Efficient Plant October 2017 - 17
Efficient Plant October 2017 - 18
Efficient Plant October 2017 - 19
Efficient Plant October 2017 - Integrating Automation Into Shade Manufacturing
Efficient Plant October 2017 - 21
Efficient Plant October 2017 - 22
Efficient Plant October 2017 - 23
Efficient Plant October 2017 - 24
Efficient Plant October 2017 - Fluid-Flow Challenges
Efficient Plant October 2017 - 26
Efficient Plant October 2017 - 27
Efficient Plant October 2017 - 28
Efficient Plant October 2017 - Looking For Failure In All The Wrong Places
Efficient Plant October 2017 - 30
Efficient Plant October 2017 - 31
Efficient Plant October 2017 - 32
Efficient Plant October 2017 - 33
Efficient Plant October 2017 - Closer Human/Robot Collaboration
Efficient Plant October 2017 - 35
Efficient Plant October 2017 - Note These Causes Of Motor Failure
Efficient Plant October 2017 - 37
Efficient Plant October 2017 - 38
Efficient Plant October 2017 - Reliable Pumping Supplement: Food & Beverage Processing
Efficient Plant October 2017 - 40
Efficient Plant October 2017 - 41
Efficient Plant October 2017 - 42
Efficient Plant October 2017 - 43
Efficient Plant October 2017 - 44
Efficient Plant October 2017 - 45
Efficient Plant October 2017 - 46
Efficient Plant October 2017 - On The Floor
Efficient Plant October 2017 - 48
Efficient Plant October 2017 - Uptime
Efficient Plant October 2017 - IIoT
Efficient Plant October 2017 - Pump 'Cavitation' Might Not Be
Efficient Plant October 2017 - Never Too Late For Basic Navigation
Efficient Plant October 2017 - Audit or Assess? Understand The Difference
Efficient Plant October 2017 - A Perfect Pair: Barcodes and Your CMMS
Efficient Plant October 2017 - Lubrication Strategies
Efficient Plant October 2017 - 56
Efficient Plant October 2017 - 57
Efficient Plant October 2017 - 58
Efficient Plant October 2017 - 59
Efficient Plant October 2017 - Products
Efficient Plant October 2017 - 61
Efficient Plant October 2017 - Ad Index
Efficient Plant October 2017 - Showcase
Efficient Plant October 2017 - Efficiency Insight
Efficient Plant October 2017 - Cover3
Efficient Plant October 2017 - Cover4
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