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1MPT Modern Pumping Today
MPT
                                                                        New Lift Station Saves
JULY 2021

                                                                            Florida Paradise
                                                                      Pump Industry Prepares
                                                                          for the Brain Drain
                                                                        Learn the Economics
            Modern Pumping Today                                  ®
                                                                                of Reliability
            Providing Solutions for the Worldwide Pump Industry

            www.mptmag.com
1MPT Modern Pumping Today
1MPT Modern Pumping Today
1MPT Modern Pumping Today
JULY 2021
22
                                                                                       MPT
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                                                                                       P.O. Box 660197 | Birmingham, Alabama 35266

                                                                                                                                          @modpumpmag

                                                                                                            J. CAMPBELL Editor
                                                                                                              jay@mptmag.com
26                                                                               35
                                                                                               TONYA BROWNING Vice President
                                                                                                            tonya@mptmag.com

                                                                                           JEFF FLETCHER National Sales Manager
                                                                                                             jeff@mptmag.com

                                                                                                        LISA AVERY Art Director

                                                                                               CAMILLE BLACK Graphic Designer

                                                                                          SETH SAUNDERS Digital Media Specialist

                                                                                                  INGRID BERKY Office Manager
A NOTE ON THIS ISSUE:
   Welcome to the July issue of MPT! Sewage spills
can detract from the appeal of any community, and                                               SUBSCRIPTIONS
frequent MPT contributor Thomas Renner provides                                                       For all changes, go to:
a look at the particularly problematic issues that                                                         MPTMAG.COM
faced Sarasota, Florida, in this month’s Case                                              Click the SUBSCRIPTIONS button
Studies section (pg. 12). Find out how a creative lift                                             in the main menu
station plan provided the solution.
   As more baby boomers continue to retire in
                                                            J. Campbell, Editor
2021, 62 percent of companies struggle to fill
                                                           Modern Pumping Today
critical, skilled technical trade positions. Plus, the
Department of Labor estimates 31 million skilled technical trade positions
will be vacant by the end of year. In this month’s Pump Solutions section
(pg. 22), Sulzer’s David Fasnacht offers ideas on how the pump industry                       www.highlandspublications.com
can prepare for the brain drain.                                                          312 Lorna Square | Birmingham, Alabama 35216
                                                                                                           866.251.1777
   Lastly, reliability analytics company Pinnacle recently released its
second Global Economics of Reliability Report, which analyzes the impact
                                                                                             TIM GARMON                         RUSSELL HADDOCK
reliability has on the water and wastewater treatment industry. Jeff Krimmel,                    CEO                                President
Pinnacle’s director of data and market analysis, shares the details in this
month’s episode of The Efficiency Point (pg. 36). Enjoy!                                   CHRIS GARMON                         DONNA CAMPBELL
                                                                                                CFO                            Vice President, Editorial

EDITORIAL ADVISORY BOARD:                                                                                    TONYA BROWNING
                                                                                                               Vice President
Terry Bell Product Manager, ABB
Heinz P. Bloch, P.E. Consulting Engineer, Process Machinery Consulting                 No part of this publication may be reproduced or transmitted in any form or
                                                                                       by any means, electronic or mechanical, including photocopy, recording,
Robert G. Havrin Director of Technology, Centrisys Corporation                         or any information storage-and-retrieval system without permission in
                                                                                       writing from the publisher. The views expressed by those not on the
Michael Mancini Consultant and Trainer, Mancini Consulting Services                    staff of Modern Pumping Today, or who are not specifically employed
                                                                                       by Highlands Publications, Inc., are purely their own. All Industry News
John M. Roach Engineering Manager for New Product Development, Trebor International,   material has either been submitted by the subject company or pulled
Inc.: A Unit of IDEX                                                                   directly from their corporate website, which is assumed to be cleared
                                                                                       for release. Comments and submissions are welcome, and can be
Lisa Riles Business Development Manager, Wastewater Pumps, Xylem Inc.: Flygt           submitted to jay@mptmag.com.
Frank Knowles Smith III Executive Vice President, Blacoh Surge Control
Greg Towsley Director of Regulatory and Technical Affairs, Grundfos
Trey Walters, P.E. President, Applied Flow Technology
1MPT Modern Pumping Today
1MPT Modern Pumping Today
CONTENTS
I N DU S T RY NE W S
What's happening in the industry.......................................... 6
                                                                                                12
CASE STUDIES
Sarasota Banking on New Lift Station To Stop
Messy Sewage Spills.........................................................12             16
  When environmental damage threatens paradise, a creative plan
  provides the solution

WAT E R & WA S T E WAT E R FO C US
Seattle Takes FOG Program Online.................................16
  Improving remote access and customer compliance

M A I N T E N A N C E & RE L I A B I L I TY
Scanning Accurate Models of Harsh Environments.......20
  New 3D reality capture technology proves a cost-effective, reliable, and safe solution

PUMP SOLUTIONS                                                                                  20
Pump Industry Prepares for the Brain Drain..................22
  Retirees cause massive shortage in trades jobs, so what’s the best solution?

MOTOR SOLUTIONS
                                                                                           22
Taking It to the Edge.........................................................26
  Numerical simulation of the propagation of a gearbox crack

SEALING SOLUTIONS
Proactive Design with Hydraulic Modeling....................30
  When technology takes root in the industry, everyone benefits

M O D E R N PU M P I N G P RO D UC T S
Blacoh Surge Control
SurgeWave™ Transient Monitoring System..........................34

EFFICIENCY POINT
Learning the Economics of Reliability............................36
  Pinnacle’s Jeff Krimmel on the water industry’s need for expansive capital investment
                                                                                                34
1MPT Modern Pumping Today
1MPT Modern Pumping Today
INDUSTRY NEWS

SEEQ AND AMAZON WEB SERVICES PARTNER                         cloud,” says Mona Chadha, director, AWS Marketplace
TO LAUNCH OF SaaS MIGRATION PROGRAM                          Category Management.
Seeq Corporation announces the launch of a new
program, the Seeq SaaS Workshop. In collaboration            GWS TOOL GROUP ACQUIRES INDEXABLE
with Amazon Web Services (AWS), the Seeq SaaS                CUTTING TOOLS OF CANADA
Workshop simplifies the migration path to the cloud          GWS Tool Group has acquired Indexable Cutting Tools,
for Seeq’s on premise customers. Seeq SaaS on AWS            Inc., the third acquisition in 2021 for GWS Tool Group
benefits for manufacturing organizations include ease        and the first international acquisition by the U.S.-based
of deployment, added support, and faster access to new       manufacturer. Located in Welland, Ontario, and Edmonton,
Seeq capabilities.                                           Alberta, Canada, Indexable is a technology leader in
  Eligible customers participating in the Seeq SaaS          the manufacturing and distribution of ceramic, PCD,
Workshop will benefit from a no-cost SaaS migration          and CBN inserts. For more than fifty years, mastery of
service, along with additional pricing options for Seeq      insert production and precision cutting technology has
subscriptions. In addition, Seeq's dedicated support         provided manufacturers around the world with an edge in
team will assist in efficiently migrating on premise Seeq    operational efficiency.
implementations, data connections, and workloads to the         The company supports an array of manufacturing
AWS cloud.                                                   companies with its products. From automotive and
  Seeq’s rapid growth is being fueled in part by its         powertrain customers to commercial and defense
commitment to cloud-based computing. Seeq is available       aerospace manufacturers, Indexable has used its model of
on AWS Marketplace, has AWS Industrial Competency            quality and flexibility to deliver what few others can. With
status, and supports many data storage services, including   six global patents surrounding their microwave sintering
Amazon Redshift, Amazon S3, plus machine learning in         processes, Indexable can output ceramic inserts with ultra-
Amazon SageMaker, and other services.                        fine-grained microstructures that yield increased hardness,
  “Customers go to AWS Marketplace to find                   toughness, and thermal stability versus traditional ceramic
solutions that provide advanced analytics and real-          grades in the same categories. Their emphasis on quality,
time collaboration to support their journey to the           which is supported by their ISO9001:2015 certification,

6   |   July 2021   |   Modern Pumping Today                                                           www.mptmag.com
1MPT Modern Pumping Today
1MPT Modern Pumping Today
INDUSTRY NEWS

aligns perfectly with what GWS demands and solidifies           demand for this real-time worker alert technology, Triax
its position as a multi-disciplinary manufacturer of high-      launched Spot-r Radius in May 2021. This next-generation
performance cutting tools in the marketplace today.             solution leverages preventative alerts with added safety
                                                                and efficiency data insights.
TRIAX TECHNOLOGIES RAISES $12.5 MILLION
SERIES A FUNDING                                                AMERICARES, XYLEM PARTNERSHIP DELIVERS
Triax Technologies has raised a Series A funding round          CLEAN WATER AND SANITATION TO 3.5
of $12.5 million. The round, led by McRock Capital, an          MILLION PEOPLE
institutional investor focused on industrial IoT, along         Xylem Watermark, the corporate social responsibility
with Connecticut Innovations and support from existing          program of Xylem Inc., and health-focused relief and
shareholders, will be used to grow the Triax team and           development organization, Americares, aim to reach
scale its solutions globally. As part of the financing, Scott   one million people in 2021, through their collaboration
MacDonald, cofounder and managing partner of McRock             to improve access to clean water and sanitation. The
Capital, has joined the Triax board.                            program builds on the first year of the partnership, which
  The funding comes amid growing demand for, and                delivered clean water and sanitation services to over 3.5
investment in, IoT technology, and increased adoption of        million people, helping to slow the spread of COVID-19.
the company’s wearable solutions to improve worksite               In 2021, the partners will provide water, sanitation, and
safety and efficiency.                                          hygiene (WASH) infrastructure repairs and education
  “Our mission is to provide IoT technology and data            to frontline healthcare workers and communities across
insights that help companies change the way they work           six countries including India and Bangladesh, currently
to keep workers safer and worksites more efficient,” says       experiencing COVID-19 spikes. In Mumbai, where
Robert Costantini, CEO of Triax. “By working closely with       informal, urban settlement communities are particularly
innovative customers, we have demonstrated the ability to       impacted by the second wave of the pandemic,
service large-scale operations with robust and scalable         interventions will include rehabilitating WASH facilities
technology, and to serve as a trusted partner in their          at healthcare facilities, serving 70,000 people from the
digital transformation initiatives.” Building on the market     city’s most low-income areas. The partners will also

8   |   July 2021   |   Modern Pumping Today                                                               www.mptmag.com
INDUSTRY NEWS

                                                provide WASH assistance to disaster-prone coastal
                                                communities in Bangladesh.
                                                  “Through our partnership with Americares we aim to
                                                bring this message to life for communities around the
                                                world and to empower them through improved access to
                                                clean water and sanitation,” says Austin Alexander, vice
                                                president of sustainability and social impact at Xylem.

                                                ATLAS COPCO POWER TECHNIQUE
                                                ANNOUNCES NEW POSITIONS
                                                Atlas Copco Power Technique names Jim O’Brien as the
                                                vice president of strategic accounts, effective immediately.
                                                O’Brien has been a part of the Atlas Copco group since
                                                2000. Originally joined the Atlas Copco group twenty-one
                                                years ago, O’Brien started his journey with Atlas Copco
                                                as a key account manager for General Motors. In 2007,
                                                O’Brien was promoted to global key customer manager
                                                for portable energy, working in Belgium and stationed in
                                                Shanghai. In 2013, O’Brien returned to the United States to
                                                serve as the integration manager for American Pneumatic
                                                Tools. With O’Brien’s background and experience, he is a
                                                strong fit for this newly created position.
                                                   Along with O’Brien, Atlas Copco Power Technique names
                                                Meadow McClure as the strategic accounts specialist,
                                                assisting designated strategic accounts to help maintain
                                                and grow customer share within current accounts. McClure
                                                has been with the Atlas Copco group for eight years.
                                                She started her journey as a service coordinator for
                                                BeaconMedaes, then later moved to the role of equipment
                                                coordinator for Power Technique North America. Now,
                                                McClure’s main responsibility is assisting with customer
                                                service on major accounts and supporting any urgencies.

                                                SOFTINWAY WINS NASA SBIR CONTRACT,
                                                CHANGING TURBOMACHINERY DESIGN
                                                METHODOLOGY
                                                SoftInWay has been awarded a NASA SBIR contract to
                                                leverage artificial intelligence to improve turbomachinery
                                                designs for use in high power-density engines. Thanks to the
                                                team’s efforts, SoftInWay was awarded the Phase II contract
                                                to expand upon its work developing an axial compressor
                                                map generation program that leverages an autonomous
                                                self-training AI. This project will redefine turbomachinery
                                                research and development, enabling companies to develop
                                                reliable and efficient technology faster.
                                                   After being awarded the Phase I contract back
                                                in September, the SoftInWay engineering team has
                                                partnered with engineers from Raytheon Technologies,
                                                a leading defense contractor in the United States, and
                                                researchers from Purdue University, a leading institution
                                                in turbomachinery research and education. SoftInWay will
                                                work with these two partners to further refine the developed
                                                AI-based program by making it applicable to a wide variety
                                                of axial compressors, a key component in making powerful
                                                yet efficient gas turbine engines for airbreathing propulsion,
                                                without the need to retrain the AI. ◆

10   |   July 2021   |   Modern Pumping Today                                              www.mptmag.com
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CASE STUDIES

Sarasota Banking
on New Lift Station
To Stop Messy
Sewage Spills
When environmental damage threatens paradise, a
creative plan provides the solution
By Thomas Renner

P
     eople have discovered there is a lot to like in        same name, the city on the state’s western side has seen a
     Sarasota, Florida. Fewer than 1,000 people called      significant rise in citizenship.
     the city home in the early 1900s. Its population now     The motives are many: weather, culture, recreational
approaches 60,000, with an increase of more than 12         activities, and affordable housing are among the reasons
percent since 2010. Like the rest of the county with the    people have flocked to the community. Sarasota Bay’s

12   |   July 2021   |   Modern Pumping Today                                                        www.mptmag.com
CASE STUDIES

                                                                                                                                                      Photo: Charlie Fernandes Photography).
abundant marine life, plentiful variety     that contributed to city’s sewage
of plants and exotic birds add to the       control problems. After the spill in
appeal, along with opportunities for        2004, another 500,000-gallon spill
fishing, kayaking, and water sports         just seven months later sparked
activities. Sarasota County attracts        community outrage.
more than 2.2 million annual visitors,        The problems, it turns out,
accounting for $2.24 billion in total       were just beginning. The road to         Lift Station 87 in Florida will have a capacity of 9.5 million
                                                                                     gallons per day, treating about 33 percent of the city’s
economic impact. By any measure,            completing the new lift station—at a     wastewater. (photo credit: Charlie Fernandes Photography)
Sarasota has got the goods.                 reported final cost of $67 million—
   Sewage spills can detract from the       was complicated, lengthy, and costly.    were demoted, reprimanded, or
appeal of any community, and they                                                    forced to retire. McNees left his
seem particularly problematic in            ROCKY START                              position as the city’s chief executive
Sarasota. “The overall health of the        Neighbors complained to the city’s       in 2007.
bay has regressed in many ways over         public works department about foul          The state’s Department of
the past decade,’’ Orion Morton, a          odors emanating from Lift Station 7      Environmental Protection established
kayak tour guide and advocate for           almost from the beginning after it was   a 2011 deadline to move the city’s
Sarasota Bay wrote in the Herald-           constructed in the 1980s. Other city     Lift Station from Pomelo Avenue. Luke
Tribune newspaper in April. “We             officials, however, had been unaware     Wood Park was determined to be the
have become accustomed to                   of resident complaints.                  best site in terms of efficiency and
sewage leaks.”                                 Tensions reached a boiling point      cost. The city estimated the project
   A 500,000-gallon sewage link in          in February 2005. Residents learned      would cost $8.5 million.
February 2004 in the city provided          about the 2004 spill only after the         The city awarded Westra
the impetus for a new lift station to       incident one year later. Michael         Construction Corporation a $9.6
handle approximately one-third of           McNees, Sarasota’s city manager at       million contract in February 2011.
the city’s wastewater flow. Lift Station    the time, defended city employees,       AECOM served as the initial project
87, which opened late in 2020, will         further angering residents. In August    engineer, and teams estimated to
replace Lift Station 7, an aging facility   2005, six public works employees         have the station completed in 2012.

www.mptmag.com                                                                       Modern Pumping Today                  |   July 2021| 13
CASE STUDIES

         A BIG LIFT
         FOR FLORIDA
         COMMUNITY

         WHAT: Lift Station 87 in
         Sarasota, Florida, is a new
         above-ground station with a 9.5
         million gallon per-day capacity.

         WHY: The project is                    Thirteen floor doors manufactured by BILCO were included in a new lift station in Sarasota, Florida.
         necessary to improve the
         wastewater system and                  Construction began in June 2011, but                          THE BIG DIG
         mitigate overflows due to              more problems quickly surfaced.                               Microtunneling was one of the most
         aging infrastructure and                                                                             significant decisions made by McKim
         equipment. It will replace             ANOTHER SPILL                                                 & Creed for the project. A trenchless
         Lift Station 7, which will be          Just two months after work began,                             method of sewer construction, the
         decommissioned and the
                                                another spill—this one not caused                             process is effective in soft, unstable
         site will be restored and
                                                by aging Lift Station 7—pushed                                soils. The tunneling process is
         landscaped to its park-like
                                                the project in a new direction. A                             remotely controlled and involves
         setting. The new station will
                                                contractor inadvertently broke a                              digging a sending and receiving
         handle about 33 percent of
                                                force main, causing an estimated spill                        pit, placing a microtunnel boring
         the city’s wastewater flow.
                                                of 200 gallons into the Hudson Bayou,                         machine into the sending pit, cutting
         HURRICANE-PROOF:                       a Sarasota Bay tributary. AECOM and                           a hole through the ground and
         The two-story building was             Westra were terminated, stopping                              pushing the new sewer pipe in place.
         designed to withstand the              work on the project. An article in the                        Workers then have to remove the
         impact of a Category 3                 Sarasota News Leader magazine                                 microtunnel boring machine.
         hurricane. The design will             said contractors were on the verge                               A jacking rig, functioning similar
         allow Sarasota Memorial                of drilling into a support slab of the                        to a jack hammer, pushes the new
         Hospital and other critical            Osprey Avenue bridge. “We’re very                             sewer pipe in place. The process
         designated storm shelters              lucky we didn’t have a catastrophe                            is slow, progressing about 20-40
         to remain operational after a          with our utility department,’’ then-                          feet per day. “You’re underground,
         storm. City officials directed         Mayor Shannon Snyder says.                                    chewing through rock, under
         the project engineer, McKim               McKim & Creed took over as the                             a historic bridge, and in an
         & Creed, to bring critical             project engineer in 2013 and after an                         environmentally sensitive area,’’
         equipment above ground to              evaluation phase, made two significant                        McKim & Creed’s Robert Garland,
         a height above Category 3              changes to the project. The new team                          P.E., said in a radio interview. “We
         storm surge elevation.                 wanted to build a new, above-ground                           went about this in a methodical way.”
                                                “hurricane-proof ” lift station, designed                        While slow, the advantage is that
         CUSTOM FLOOR DOORS:                                                                                  the process does not disturb the
                                                to withstand Category 3 hurricanes.
         Thirteen floor doors from
                                                   The new model also required                                surface above. The bridge, and the
         BILCO were installed in the
                                                digging eight-feet further down to                            sensitive environment in Hudson
         project, and include factory-
                                                construct microtunnels to convey                              Bay, concerned Sarasota officials
         installed fall protection
                                                waste. Engineers believed the bridge                          and McKim & Creed. Wastewater is
         grating. The doors were
         customized to meet unique              might have collapsed in the soft silt                         carried through a 36-inch PVC pipe
         size requirements.                     base around the bridge without the                            in the microtunnel, and it is encased
                                                deeper microtunnels.                                          in a 60-inch casing.
         DID YOU KNOW? Sarasota                    While necessary, the new design                               “We put the steel casing in first,
         has been impacted, directly or         was more time-consuming and costly.                           which is the wall of the tunnel,’’
         indirectly, thirty-six times in the    Previous work also needed to be                               Garland said. “Inside that casing
         last 146 years by hurricanes.          done over. Work on microtunnels                               will be the pipe that carries the
         The city is brushed or hit by          started in January 2017, and                                  wastewater. It helps us in the
         hurricanes every 2.16 years.           estimates increased from $27.1                                construction, but if there is any failure
                                                million in 2014 to $32 million in 2015                        of the pipe, it is contained within
                                                and finally, $54.1 million in 2017.                           that casing.”

14   |   July 2021   |   Modern Pumping Today                                                                                                www.mptmag.com
CASE STUDIES

   Work on the 670-foot microtunnel
under the bridge began in January
of 2017. The Osprey Avenue Bridge,
which was closed in 2016, opened in
June of 2017. The project also included
a 560-foot long microtunnel under
Luke Wood Park that connects to Lift
Station 87 and with the microtunnel
installed under the Hudson Bayou.

TWO-STORY LIFT STATION
The other critical change designed                         The BILCO doors will allow access to pumps and vaults for workers at the lift station.
by McKim & Creed included the
construction of a two-story lift                              “The doors are durable, and they                            gravity wastewater pipeline by
station designed to withstand strong                       are a good product for this application                        open cut to connect homes and
hurricanes. Sarasota Memorial                              because they are aluminum and won’t                            businesses to the new lines. Crews
Hospital and storm shelters will                           be as impacted by corrosive gases                              also replaced aging ductile iron and
be served by the new station.                              and water,’’ says Cory Westphal, an                            asbestos cement pipe, installed new
Maintaining operations during                              assistant project manager for PCL.                             reclaimed water mains and replaced
hurricanes was an important concern                        “It was a fairly standard installation                         storm sewers. New curbs, sidewalks,
for city officials and residents as a                      except that they were installed                                and drainage improvements were
hurricane or tropical storm brushes                        before the building was finished. The                          included. Osprey Avenue, which had
the city, on average, every other year.                    building was built around the doors.”                          been closed earlier in the process for
   The building includes HVAC and                             PCL ordered the doors through                               the digging of the microtunnels, was
equipment exhausts in the towers,                          Building Specialties of Bradenton,                             closed again from June 2020 through
and the two-story building was built                       which worked with them to                                      March 2021.
over a new, 50-foot deep wet well.                         manufacture special sizes. “BILCO                                 Wastewater flow was diverted
It has a maximum capacity of 9.5                           was selected because they had the                              to Lift Station 87, and Lift Station
million gallons per day.                                   capability to make very large hatches,’’                       7, seventeen years after its failing
   PCL Construction installed thirteen                     Westphal says. “Competitors had                                systems surfaced, will eventually
doors from BILCO in the lift station.                      difficulty building the sizes we needed                        be demolished and restored to a
The doors were manufactured in                             and meeting the loading requirements.                          park-like setting. The final price will
a wide range of sizes and allow                            The ability to make them that large and                        amount to about $67 million, and
access to vaults, pipes, and pumps                         meet those requirements was essential.                         that figure includes $48.6 million for
in the wet well. The floor doors are                       They were prepared because they                                planning and construction, according
constructed from aluminum with                             build doors like this frequently and                           to reports.
stainless steel hardware for corrosion                     they knew how to do it.”                                          For city officials and residents, the
resistance and are reinforced for                                                                                         project’s completion is noteworthy,
H-20 loading to withstand the force                        FINAL LEG                                                      but hardly celebratory. “I think we
of heavy equipment vehicles used at                        The final phase included the                                   need to own up to it and explain to
the facility.                                              installation of a 24-inch diameter                             the community what happened so
                                                                                                                          that we and future commissioners
The BILCO doors are designed to withstand the force of heavy equipment.                                                   don’t have the same problem or learn
                                                                                                                          from those mistakes,’’ Commissioner
                                                                                                                          Hagen Brody told the Herald-Tribune
                                                                                                                          last September. ◆

                                                                                                                               Thomas Renner writes on building,
                                                                                                                               construction, engineering, and other
                                                                                                                               trade industry topics for publications
                                                                                                                               throughout the United States.

www.mptmag.com                                                                                                            Modern Pumping Today          |   July 2021| 15
WATER & WASTEWATER FOCUS

Seattle Takes
FOG Program Online
Improving remote access and customer compliance
By Chris Weinandt, Aquatic Informatics

W
             ith more than 5,000
             restaurants and food
             service establishments
(FSEs) in Seattle, the city’s fats, oils,
and grease (FOG) program is vital
to protecting community health
and keeping sewers flowing by
preventing unlawful discharges from
entering the system. With a team
of five inspectors and one program
supervisor responsible for a large
program, Gary Christiansen, program
supervisor for the Wastewater Source
Control Program (WSCP) at Seattle
Public Utilities, needs to optimize on          Seattle Wastewater Source Control team.
efficiencies wherever possible.
   “The reality is our small team is not           “We realized if we connected these       uploaded into GIS. To bring the GIS
able to inspect every Food Service              two software solutions, we would            data into the Linko platform, WSCP
Establishment (FSE) immediately;                be able to better manage our FOG            staff contracted Linko to design and
our success depends on identifying              program, automate tasks that were           build an import feature to allow for
problem areas and prioritizing                  time-consuming, and reduce human            the integration of data between GIS
establishments that require the greatest        error in the process,” says Christiansen.   and the FOG software. After a few
attention. Our overarching goal is to                                                       months, the integration between the
create a data-driven vs. an effort-driven       INTEGRATION OF                              FOG software and GIS was complete.
program in order to serve the City of           SOFTWARE PROGRAMS                              When the city receives the
Seattle in a cost effective and efficient       Wastewater Source Control Program           automated reports, data is entered
manner,” says Christiansen.                     staff worked closely with the County        and categorized by the GIS system.
                                                Health Department, Food Safety              The team is then able—at the click
OPTIMIZING EXISTING PROGRAMS                    Division to maintain an accurate            of a button—to send information
For a little over fifteen years, the city       listing of restaurants. By working          from ArcGIS directly to the Linko
has used Linko, a software program              with the permitting agency, SPU was         database. Previously, this information
that tracks data from FSEs, as well             able to set up regularly scheduled,         would have been entered manually
as ArcGIS that maps sewer lines,                automated reports containing the            and updated annually based on a list
connections, and identifies hotspots.           business information about active           of several hundred new facilities.
The problem was these two systems               restaurants, new permits issued, and           Integrating the two major software
were not integrated, but if they were,          recently closed permits enabling            systems allowed certain data elements
the city could use its GIS system to            them to keep their database of over         to be shared between the systems.
identify which FSEs were discharging            5,000 restaurants up to date. Once the      Now, the FOG software can seamlessly
to which service connections and                permit data is received, it is married      schedule initial inspections for new
then cross-reference that data with its         with the results of SSO, maintenance        facilities—and ensure new businesses
FOG data.                                       data, and CCTV findings and                 are not missed.

16   |   July 2021   |   Modern Pumping Today                                                                   www.mptmag.com
WATER & WASTEWATER FOCUS

  “By consolidating GIS and other              The smart forms introduced with                               categories.” From there, Hockett
data into the FOG software, we can           Remote Inspector allow inspectors                               would manually assign inspections
get a much more accurate picture of          to enter findings into their mobile                             for each facility using data from the
the network, connections to FSEs, and        device directly from the field.                                 asset management software and its
the condition of actual sewers, which        By creating standardized digital                                basic information.
really helps us pinpoint problem             forms, the city can now quickly and                                Armed with the new smart forms
areas and reduce problems overall,”          easily specify what data must be                                in Remote Inspector, the inspector
says Christiansen.                           collected and build a baseline for                              completes a questionnaire with
                                             better analysis.                                                information observed during
DIGITIZING DATA ENTRY                                                                                        the inspection. The form then
Now that the two programs were               STREAMLINING RISK ASSESSMENT                                    calculates the results, assigning
working well together, Christiansen          The second instrumental form                                    points to determine the facility’s
had a vision to further improve data         or process to be digitized was a                                FOG discharge risk. The smart
accessibility and streamline processes       facility’s FOG risk assessment, which                           form combines the FOG discharge
by taking the whole program online.          is a ranking based on key factors.                              risk with the Hotspot category and
“Cloud native applications enable               Angelique Hockett, a city FOG                                automatically assigns an overall FOG
our inspectors to access all of our          inspector who established the Risk                              risk value. Based on the FOG risk
facility information from the office, in     Priority Assessment ranking for the                             value, the software automatically sets
the field, and in the current COVID-         FOG program, says, “If we had a                                 a tailored inspection schedule for
19-work environment—from their               sanitary sewer overflow (SSO) on                                the facility, allowing SPU to schedule
homes utilizing a laptop or tablet,          a main line, that line was given a                              resources in sync with actual need
even their smartphones. We have              unique number if SSO and CCTV                                   out in the field. Meaning, FSEs that
already experienced the efficiencies         crews had identified grease. I would                            require more touches are scheduled
of integrating previously-siloed data        then join the lines in the GIS software                         as such, and those needing less
between the FOG and GIS systems.             and a summation of the various                                  touch are scheduled accordingly
The first step to taking the program         criteria would dictate a hotspot                                as well. “Digitizing this process has
online was to optimize the digitization      category per facility. There are thirty-                        improved accuracy and enables us
of processes. Next, we intend to move        seven different ranking numbers,                                to take preventative action before
to online maintenance reporting,”            organized to fit into six hotspot                               hotspots occur,” concludes Hockett.
adds Christiansen.
   A natural extension for the city was to
add Linko Remote Inspector, a software
tool that digitizes inspection data
and standardizes the data gathered
during inspections. “Prior to this, we
had paper forms that didn’t have a
lot of direct questions and were very
text-based,” explains Christiansen.
“The inspector would write his or her
findings and what they thought was
relevant onto these paper-based forms,
with no specific direction to ensure
basic information was captured.” Often,
this led to many more questions by
the FSE and corrective actions would
require multiple follow-ups before the
action could be resolved.
   In addition, when hotspots
occurred, there were no warnings
or indications because no data
was available for analysis. Instead,
as hotspots were identified, the
city would send out inspectors—a
reactive approach that meant no
preventative steps were being taken,
resulting in a backlog of inspections.       Linko Remote Inspector allows inspectors to easily collect data electronically in the field.

www.mptmag.com                                                                                               Modern Pumping Today           |   July 2021| 17
WATER & WASTEWATER FOCUS

MOVING ONLINE                                   remains consistent, making it easier     FOSTERING PARTNERSHIPS
With digitized processes in place,              to use and access the entire suite       WITH FSE
moving the city’s FOG program                   of FOG software from anywhere.           Once an inspection has been
online has several advantages. Being            “The uniformity that comes along         completed, inspectors can easily
accessible through a browser, it                with a cloud application makes it        email a copy of the completed
can now be used on any connected                a lot more efficient and gives us        inspection form to the FSE. Previously,
mobile device or computer. The look,            flexibility for the future as the city   the recipient of the inspection report
feel, and function of the software              grows,” says Christiansen.               received a copy of the paper form
                                                                                         along with an inspector’s business
                                                                                         card. The form included handwritten
                                                                                         comments about what corrective
                                                                                         actions needed to be taken, which
                                                                                         weren’t always clearly stated and
                                                                                         required subsequent follow-up visits to
                                                                                         ensure action was taken. Now, a report
                                                                                         is emailed directly to the FSE with
                                                                                         specific corrective action information.
                                                                                         From a compliance perspective,
                                                                                         this helps ensure all parties clearly
                                                                                         understand the city’s expectations.
                                                                                         This has helped the city dramatically
                                                                                         improve relationships with FSEs. The
                                                                                         city can now receive an email with
                                                                                         pictures when something is cleaned
                                                                                         or corrected, meaning that staff don’t
                                                                                         need to go back to the establishment
                                                                                         to verify the problem is fixed.
                                                                                            “Since deploying the FOG
                                                                                         management software we have been
                                                                                         able to increase the number of our
                                                                                         inspections by 316 percent over
                                                                                         four years. The new program has
                                                                                         improved work processes, like route
                                                                                         planning and reduced admin time
                                                                                         by bringing everything online, so
                                                                                         we are able to visit more sites which
                                                                                         is a good thing for Seattle’s sewer
                                                                                         system,” concludes Christiansen. ◆

                                                                                            Chris Weinandt is the Aquatic
                                                                                            Informatics product manager for
                                                                                            Linko and Tokay. Weinandt has been
                                                                                            with Aquatic Informatics for over
                                                                                            eighteen years where he has helped
                                                                                            build and deliver software solutions
                                                                                            for fats, oils, and grease; industrial
                                                                                            pre-treatment; liquid hauled waste;
                                                                                            and cross connection control and
                                                                                            backflow prevention. Weinandt focuses
                                                                                            on delivering software features and
                                                                                            functionality that drive efficiencies
                                                                                            and better informed and timely
                                                                                            decisions. For more information, visit
                                                                                            www.aquaticinformatics.com.

18   |   July 2021   |   Modern Pumping Today                                                                   www.mptmag.com
W E BI NA R S
        LEARNING FOR TODAY’S PUMP
       INDUSTRY, AT YOUR FINGERTIPS
     Whether your work focuses on water and wastewater, chemical
 processing, or original equipment manufacturing, you need to stay up
  to date with the latest training. MPT’s hosted webinars bring industry
experts from leading companies to your computer and offer professional
                        certificates for completion.

        FOR MORE INFORMATION:
              J. Campbell (jay@mptmag.com)
               visit our website mptmag.com
MAINTENANCE & RELIABILITY

Scanning Accurate
Models of Harsh
Environments
New 3D reality capture technology proves
a cost-effective, reliable, and safe solution
By Dean Solberg and Steve Young, Exact Metrology

M
          any industrial sites present inhospitable            Geosystems and distributed by Exact Metrology, these
          environments, where the health and safety of         portable coordinate measuring machines are designed to
          the employees and visitors are at risk due to        measure large-scale objects. This laser scanner uses 3D
temperature, corrosive materials, moving machinery, and        reality capture.
heavy objects. In addition, sites often have networks of         Thanks to 3D reality capture, building information
pipes, tunnels, storage vessels and other structures that      modeling (BIM) experts save time and money as BIM
need to be examined. 3D reality capture permits complete       processes become more efficient, from the accuracy of
site visualization for safety training. Site visibility also   construction documentation to design and build quality
greatly improves plant management efficiency. Accurate         assurance. The latest laser scanning technological
measurements help designers create extensions without          developments improve understanding and documentation
needing to visit the site and enhanced planning of             of the build environment through the use of millimeter-
workflow avoids disruptions.                                   accurate laser scanning and high-dynamic range (HDR)
   3D reality capture is a process of scanning and             imagery. By using 3D reality capture, previews of data
capturing any site, for example, factories, buildings,         and imagery are viewable onsite directly from a tablet,
crashes, and crime scenes, in a 3D digital model,              enabling scans to be checked and verified before going
combining measurements and imagery. The model can              to the office.
be used for design and comparison purposes
in various situations, capturing                                                ACCURATE AND RELIABLE
every detail with to-the-millimeter                                                The RTC360 3D Reality capture
accuracy. This technology                                                           scanner is ideal for professionals
combines one-touch operation                                                        managing project complexities
with portability and speed to                                                       with accurate and reliable 3D
deliver high levels of accuracy,                                                     representations. This scanner
automation, and the ability to                                                       effectively combines a high-
create 3D environments in a matter                                                   performance 3D laser scanner with
of minutes.                                                                          Leica Cyclone Field 360, a mobile
                                                                                     device app for edge computing
3D REALITY CAPTURE                                                                   that automatically registers scans
UP CLOSE                                                                             in real time and Leica Cyclone
Exact Metrology, a comprehensive                                                     Register 360, an office software that
metrology service provider and                                                       integrates the 3D model into the
an architectural scanning company,                                                  workflow. Additional features include
is proud to announce the immediate                                               capturing scans, including enriching
availability of the Leica RTC360 3D                                             HDR imagery in less than two minutes,
laser scanner. Manufactured by Leica                                           automatically recording moves from

20   |   July 2021   |   Modern Pumping Today                                                           www.mptmag.com
MAINTENANCE & RELIABILITY

station to station, and augmenting
data capture with information tags.
  Using 3D technology is useful
when a crash or crime scene
requires quick analysis of the scene.
Scanning creates a 3D environment
that can be explored and analyzed,
as well as documents the entire
scene in detail. Furthermore, fast
scanning minimizes disruption
and delays and removes scene            the device and software greatly
degradation, thus providing jurors      reduce time spent in the field and
with credible evidence. Security        maximize productivity.                       Exact Metrology is ISO9001,
and site validation at public events      The scanner’s portable design              AS9100 certified as well as FFL and
are likewise very important and         and collapsible tripod fit into most         ITAR registered. With facilities in
an accurate model of the area           backpacks. Low noise data allows             Cincinnati, Ohio; Moline, Illinois; and
                                                                                     Milwaukee, Wisconsin, plus affiliated
can highlight threats and risks not     for better images, resulting in crisp,
                                                                                     offices throughout the country,
readily evident.                        high-quality scans that can be used in       Exact Metrology is a comprehensive
                                        a variety of applications.                   metrology services provider, offering
REAL-TIME MEASUREMENTS                    As part of the RTC360 solution, the        customers 3D and CT scanning,
AND HIGH-QUALITY SCANS                  Cyclone Field 360 links the 3D data          reverse engineering, quality inspection,
                                                                                     product development, and 2D
With a measuring rate up to             acquisition in the field with the laser
                                                                                     drawings. The company also provides
two million points per second,          scanner and data registration in the         turnkey metrology solutions, including
automated targetless field              office with Cyclone Register 360.            equipment sales and lease/rental
registration (based on VIS              The user can automatically capture,          arrangements. For more information,
technology) and automated               register and examine scan and                visit www.exactmetrology.com
transfer of data from site to office,   image data. ◆

www.mptmag.com                                                                    Modern Pumping Today        |   July 2021| 21
PUMP SOLUTIONS

Pump Industry
Prepares for
the Brain Drain
Retirees cause massive shortage in trades jobs, so
what’s the best solution?
By David Fasnacht, Sulzer Pump Services Inc.

A
        s more baby boomers continue to retire in 2021,             manufacturing facilities, power plants, pipelines, water
        it is reported that 62 percent of companies are             processing plants, and chemical plants have employees
        struggling to fill critical, skilled technical trade        with decades of experience retiring with their intimate
positions, such as millwrights, machinists, mechanics,              knowledge of the equipment and processes.
welders, operators, pipefitters, and electricians. Thirty-            These plants supply us with electricity, water, gas,
one million skilled technical trade positions will be               and diesel for our vehicles and heat in our houses, just
vacant by the end of 2021, per the 2020 U.S. Labor                  to mention a few necessary living requirements. Jobs
Department Report.                                                  that supply our everyday needs cannot be outsourced.
  Skilled tradespeople are key components to the                    In a perfect world, the trade's person retiring would
domestic workforce and are vital to the economy. The                be paired with their replacement, for six months to
need for skilled technical trade labor training is only             a year, to learn all the tricks of the trades that have
becoming more evident. Today's maintenance facilities               been mastered by the senior employee over their
                                                                    decades of employment.
Understanding the technical aspects of pump operation can improve
operator performance.
                                                                    ENTRY-LEVEL TRAINING
                                                                    Due to cost constraints, companies rarely invest in
                                                                    training new employees prior to the retirement of
                                                                    their predecessors. The need for skilled, entry-level
                                                                    employees is becoming so great that employers are
                                                                    starting to look at many ways to find qualified personnel.
                                                                       Some companies are starting to work with the local
                                                                    trade schools in their areas. These trade schools have
                                                                    substantial access to manufacturing and processing
                                                                    plants in their area to develop the specific training
                                                                    required for manual maintenance operations and
                                                                    automated operations at these facilities.
                                                                       Companies may need to revisit company-specific
                                                                    apprenticeship/mentorship programs to ensure they
                                                                    have a qualified employee base. In the past, companies
                                                                    had training programs available to interested, new talent.
                                                                    One of the challenges industries are being faced with
                                                                    is the shallow talent pool from which to draw a skilled
                                                                    tradesperson. Companies may receive 400 applications
                                                                    but only six of those applicants are qualified for the
                                                                    skilled labor trade job available.

22   |   July 2021   |   Modern Pumping Today                                                                 www.mptmag.com
PUMP SOLUTIONS

REAL-WORLD SKILLS
Training programs can range from a
thirty-minute online seminar to two- to
five-year programs / mentorships. The
goal of the two- to five-year programs
/ mentorships is to have a skilled
technical tradesperson with the
company's required specific skillsets.
   The reality is trade schools do not
offer many classes for the manual
processes and the real-life skills
needed in these manufacturing
facilities. Most of the chemical plants,
maintenance facilities, and refineries
have little use for automated
machining of parts. The facilities may
need to machine one or two parts,
not thousands, thus making manual
machining processes necessary.
This creates a disconnect between          Regular training sessions offer a great return on investment.
outside/third-party training offered
and the actual needs of the facilities.    knowledge—retiring employees and                                utmost importance. The employers
   New employees need exposure             training classes.                                               must invest in the new employees'
to and training for all aspects of            From the viewpoint of a skilled                              internal training, so the company
the processes and the equipment            technical tradesperson, already                                 can perform efficiently and safely
in the shortest time possible,             working in the industries mentioned,                            and maintain a healthy profit margin.
which can be achieved by tribal            the training type and timing is of the                          Internal training can also supply the

www.mptmag.com                                                                                             Modern Pumping Today   |   July 2021| 23
PUMP SOLUTIONS

                                                                                                             may not understand how running
                                                                                                             a centrifugal pump incorrectly
                                                                                                             increases the frequency of repairs,
                                                                                                             which could otherwise be avoided;
                                                                                                             in addition, maintenance personnel
                                                                                                             may not understand why they are
                                                                                                             repairing the equipment so often.
                                                                                                             This lack of knowledge can cost the
                                                                                                             employers excessive, unnecessary
                                                                                                             downtime, loss of production and the
                                                                                                             added maintenance costs, leading to
                                                                                                             significant revenue losses.
                                                                                                                The rate of return for a company
                                                                                                             investing in their employees'
                                                                                                             training is hard to gauge, but
                                                                                                             training is extremely beneficial to
                                                                                                             the maintenance of the facility while
                                                                                                             keeping downtime and unnecessary
                                                                                                             repair costs to a minimum. Every
                                                                                                             training session, whether it is a
                                                                                                             thirty-minute, online seminar or
                                                                                                             a three-day, face to face seminar
Broadening the knowledge base of the younger generation helps to retain valuable information                 with hands-on training, can have
within the organization.                                                                                     an enormous rate of return for the
                                                                                                             facility, thus decreasing costs and
employees with critical information                          FILLING THE KNOWLEDGE GAP                       increasing efficiency as well as safety.
and hands-on experience, thus                                Lack of training can work in two                   If a company were to send a
decreasing the learning curve and                            ways in a manufacturing plant. For              tradesperson to attend one subject-
minimizing unnecessary mistakes.                             example, operations personnel                   specific class, once a year for five
                                                                                                             years, pertaining directly to the
Investment in training is vital for the support of new employees and their development within the company.   equipment supported, tremendous
                                                                                                             benefits and cost savings will be
                                                                                                             achieved in production and safety.
                                                                                                             Ongoing training programs can
                                                                                                             ensure staff are well qualified for
                                                                                                             their positions.

                                                                                                             BECOMING QUALIFIED
                                                                                                             Take for example an employee
                                                                                                             who is personally responsible
                                                                                                             for the successful installation,
                                                                                                             rebuilding and maintenance of
                                                                                                             centrifugal pumps. The most benefit
                                                                                                             would be obtained by attending
                                                                                                             a centrifugal pump fundamentals
                                                                                                             course, which supplies a solid
                                                                                                             foundation of installation, operation
                                                                                                             and maintenance of rotating
                                                                                                             equipment. This also satisfies the
                                                                                                             OSHA Codes of Federal Regulations
                                                                                                             (CFR) 1910.399 requirement. OSHA
                                                                                                             defines a "qualified person" as
                                                                                                             "one who has received training in
                                                                                                             and has demonstrated skills and
                                                                                                             knowledge in the construction
                                                                                                             and operation of electrical,

24   |   July 2021   |   Modern Pumping Today                                                                                     www.mptmag.com
PUMP SOLUTIONS

equipment and installations and
the hazards involved."
   When applied to pumps and systems,         David Fasnacht is customer training manger for Sulzer Pump Services. Sulzer is a global leader
a qualified person can demonstrate            in fluid engineering. The company specializes in pumping, agitation, mixing, separation, and
relevant skills and knowledge related         application technologies for fluids of all types. Sulzer customers benefit from its commitment to
                                              innovation, performance, and quality and from our responsive network of 180 world-class production
to the installation, operation and            facilities and service centers across the globe. For more information, visit www.sulzer.com
maintenance of such equipment and
systems. In addition, the employee will
receive the safety training needed to
identify and avoid hazards, including
the proper identification and use of
personal protective equipment and
proper lockout/tagout procedures.
Instructor-led training teaches
the basics along with the safety
knowledge needed to meet OSHA's
"qualified person" definition.
   The learning curve can be
exceptionally steep when people
begin their trades careers. Mistakes
are not acceptable. Companies
must invest in their employees if
they expect them to perform at the
elevated level needed to compete in
today's business world.

EMPLOYEE INVESTMENT
Training is often the first thing to be cut
in tough economic times, making for
enormous ramifications, considering
20 to 60 percent of the skilled trades
employees in most facilities have been
hired in the last five years.
   Businesses must invest in the talent
that they currently employ and plan
on hiring. Employee investment will
provide years of successful operations
with a minimal amount of growing
pains, as the baby boomers retire.
   The shortage of skilled trades
workers today is unprecedented.
Therefore, training is critical for the
future success of a facility. Employers
must supply the training necessary,
as the hiring pool is young and
inexperienced, which will give the
companies the best chance for a
smooth transition from the retiring
employees to the new hires.
   There has never been a better
time to be an ambitious, well-trained,
skilled technical tradesperson.
Being proactive instead of reactive
with training is necessary for
both the employer and employee
in today's times. ◆

www.mptmag.com                                                                                  Modern Pumping Today           |   July 2021| 25
MOTOR SOLUTIONS

Taking It to the Edge
Numerical simulation of the propagation
of a gearbox crack
By Lin Liu and Suri Ganeriwala, SpectraQuest Inc.

26   |   July 2021   |   Modern Pumping Today       www.mptmag.com
MOTOR SOLUTIONS

I
    n this article, fracture propagation is simulated using                                                          Gearbox
    a finite element model for a gearbox that is designed
    for a rotor dynamic test rig. The circumferential plates
of the gearbox are welded along the side as well as the
bottom edges. Micro-cracks are usually generated at
weld toes and the welding process will introduce residual
stresses. The effect of the locations of initial fracture on
fracture propagation path is studied.

INTRODUCTION
SpectraQuest Inc. specializes in design, development,
and fabrication of gearbox system for diagnostics and
prognostics researches. Upon request from a customer,
we have performed a numerical simulation of crack
propagation in a gearbox. The gearbox is installed in the        Figure 1: Gearbox in gearbox dynamic simulator.
Gearbox Dynamic Simulator, which is illustrated in figure 1.
  The gearbox is made of six aluminum plate. Each one of         Because of the small thickness of the plate, it can be
the four circumferential plates is welded with one another.      considered as a plane stress problem and two-dimensional
Furthermore, the circumferential plates are welded to the        finite element model is created using FRANC2D software.
bottom plate. The top plate is bolted to the circumferential        The finite element model is displayed in figure 3. There
plates. A closer look of the gearbox is displayed in figure 2.   are total of 800 Q8 quadrilateral elements. The bottom edge
                                                                 is constrained both in the x and y directions. The assumed
GEARBOX MODEL                                                    load is a node load applied at the uppermost node in the
The end plate of the gearbox facing the direction of the         hole in the y direction with amplitude of 200 pounds.
rotor “B” assembly is modeled in the work. The geometry             An edge fracture is introduced on the left side of the plate
of the plate is a 14 by 14 inches square with a 3-inch radius    with different initial locations. The three fracture initial locations
hole in the center. The thickness of the plate is 0.5 inches.    studied in the work are displayed in figure 3. The lengths

www.mptmag.com                                                                                Modern Pumping Today   |   July 2021| 27
MOTOR SOLUTIONS

                                                     X Location along bottom edge(in.)
                                                                       (a)σxx
Figure 2: Gearbox.                                                                                                       (a) tensile stress

         Third location

           Second location

                                                     X Location along bottom edge(in.)
           First location                                              (b)σ yy
                                                                                                                     (b) compression stress
                                                                                                       Figure 4: Stress distribution in whole plate
                                                                                                       without fracture.

Figure 3: Finite element model of plate.

of three initial fractures are all 0.21
inches. And the initial crack direction is
horizontal for all the three cases.
   For each fracture studied, automatic
fracture propagation is performed. The
crack increment length is 0.2 inches,
and fifteen steps are simulated.
                                                     X Location along bottom edge(in.)
SIMULATION RESULTS                                                     (c)σxy
The tensile and compression stress              Figure 5: Stress distribution along the bottom edge.
bar distributions for a plate without
                                                                                                       Figure 6: Remeshed area along the crack.
fracture are displayed in figure 4.                The deformed mesh for the first
   The three sigma distributions                crack case is displayed in figure 7.
along the bottom edge are displayed             The deformation is amplified to make
in figure 5. It can be noticed that the         it distinguishable.
vertical external load will introduce              The crack propagation paths for
normal stress in the horizontal                 the three crack cases are displayed in
direction as well as shear stress               figure 8. The first crack, which has the
beside the normal stress in the                 lowest vertical initial location among
vertical direction.                             the three cases, will propagate in an
   The software has the capability to           upward direction. The third crack,
remesh the cracked area every time              which has the highest vertical initial
the fracture is propagated. The mesh            location among the three cases, will
scheme after the first crack simulation         propagate in a downward direction.
is finished is displayed in figure 6. Note      However, the second crack, which
the refined mesh along the crack.               is initiated at a position between the                 Figure 7: Deformed mesh for first crack.

28   |   July 2021   |   Modern Pumping Today                                                                                         www.mptmag.com
MOTOR SOLUTIONS

                                                                                              CONCLUSIONS
                                                                                              Under the simulation conditions for
                                                                                              this work, the results indicate an edge
                                                                                              crack initiated close to the bottom of
                                                                                              the plate has lower stress intensity
                                                                                              factor than those initiated at a higher
                                                                                              position along the plate side edge. An
                                                                                              edge crack along the gearbox plate
                                                                                              needs to be monitored carefully. ◆
         (a) First crack                   (b) Second crack              (c) Third crack
Figure 6: Remeshed area along the crack.

                                                                                                 SpectraQuest, Inc. is a leading developer
                                                                                                 and manufacturer of complete turn-
                                                                                                 key systems for training and diagnosis
                                                                                                 in machine vibration analysis, rotor
                                                                                                 balancing, and shaft/coupling alignment.
                                                                                                 System includes machinery fault
        Crack Length (in.)                  Crack Length (in.)           Crack Length (in.)      simulators, interactive training program,
        (a) First crack                    (b) Second crack              (c) Third crack         data acquisition hardware/software, and
Figure 6: Remeshed area along the crack.
                                                                                                 accessories. To accelerate the learning
                                                                                                 and design process SpectraQuest offers
                                                                                                 a series of interactive software CDs on
first and third cracks, will develop                  figure 9. Figure 9 indicates               vibration fundamentals and calculations,
in a horizontal direction.                            second and third cracks                    signal processing, alignment, and
    The Mode I stress intensity                       have larger stress intensity               balancing. For more information, visit
                                                                                                 www.spectraquest.com.
factor history for the three                          factors which suggest faster
crack cases is displayed in                           fracture propagation.

www.mptmag.com                                                                                Modern Pumping Today        |   July 2021| 29
SEALING SOLUTIONS

                                                Proactive
                                                Design with
                                                Hydraulic
                                                Modeling
                                                When technology takes
                                                root in the industry,
                                                everyone benefits
                                                By Walt Prentice, Applied Flow Technology

30   |   July 2021   |   Modern Pumping Today                                         www.mptmag.com
SEALING SOLUTIONS

N
        o longer is over-engineering, or designing from  pressure surges from vapor pocket collapse. Traditional
        heuristics, as necessary as it once was. Why?    analyses do not predict this and can leave the engineer
        Because engineers can build and test systems     with incorrect expectations.
in a computer rather than in the field. Flow analysis      The other problem with traditional approaches is
software has improved multiple facets of hydraulic       waste. If systems are designed with unrealistically bad
system engineering. As technology improves, knowledge    expectations, more money and resources are spent than
expands, and communication systems tighten, engineering  necessary. This leads to higher costs, lower efficiency, and
teams can better prepare for                                                   more complicated systems. Engineers
unexpected events, design for the                                              should always design for the simplicist,
most efficient systems, and leave                                              most effective solution, which is best
clearer footprints behind for future                                           determined through modeling.
engineers to follow.                            DO THE MATH
                                               The math involved                     EFFICIENCY AND COSTS
UNEXPECTED EVENTS                              to analyze these                         Current design is driven by the best
Things rarely go exactly as planned: in                                                 and most cost-effective solution, not
pumping systems and in life. At some           situations is                            only one that gets the job done. Fluid
point, an emergency shutdown or                beyond what the                          modeling has improved both pump
power failure will impact the system.          average engineer                         and system efficiency. For example,
In the past, the safe approach was to                                                   engineers can digitally build their
over-engineer the system to mitigate           cares to work out.                       system to determine what head rises
any perceived worst-case scenarios.            This can lead to                         are required for various flow rates
However, the introduction of modeling          many simplifying                         and conditions. Then they can look at
software allows widespread testing                                                      capital and operating costs to see what
of these scenarios to predict system           assumptions,                             pump configuration is best suited.
responses without having to test in the        causing the analysis                        One example of efficient software
field, or worse, to find out during the        to deviate further                       design was a refinery cooling loop
event itself. Yet, over-engineering is                                                  redesign. It had four pumps in parallel
still common today. While better tools         and further from                         as standard operation. One of them
exist, it takes time for them to take          reality. If only                         vibrated violently and eventually
root and become standardized. Two              engineers knew how                       failed. After years of operational
main reasons software modeling is                                                       changes, no one had hydraulic models
advantageous are:                              accessible modeling                      to see the effects until consultants
                                               accurate worst-case                      were called to help. Modeling
  (1) The assumed worst-case                   scenarios was.                           software revealed the problematic
  scenarios often do not account for                                                    pump ran far outside its preferred
  everything.                                                                           operating region and that two pumps
                                                                                        in parallel were more cost effective
  (2) Over-engineering leads to                                                         than four. Not only were operating
  waste.                                                       costs reduced, but the remaining pumps would be running
                                                               at their best efficiency point (BEP), as shown in figure 2.
   A common worst-case scenario is a waterhammer event            This is not initially obvious because spreading the load
and the resulting pressure surge. The failure of traditional   across four pumps sounds less stressful than loading
methods for predicting waterhammer repercussions come          two. However, pumps are built to operate in certain
from a lack of understanding the methods’ limitations.         regions, and factors like these must be considered during
Engineers must identify the maximum pressure that could        design. Without software, these efficiency sweet spots
arise in a piping system to ensure safety and meet code.       in complicated systems are much harder to identify. The
Typically, that involves a few extreme assumptions, such as    study both extended pump life and saved $200,000 a year
an instantaneous valve closure, and applying pressure-rise     simply by modeling the system.
calculations. Yet there are three common situations that          Similar thinking can be applied to pipe sizing, as
escape the engineer’s view: line pack, wave reflections,       there are both capital and operating costs to consider.
and liquid column separation.                                  Smaller pipes generally cost less, but they cause more
   Figure 1 demonstrates how liquid column separation          frictional losses. This means the pump needs to supply
causes pressure spikes downstream of a fast valve closure.     more pressure than it would in larger pipes to drive
The initial pressure rise occurs on the upstream side from     the same flow. Hypothetically, though a pump may be
sudden flow stoppage, but the downstream side sees             sized “properly” according to the system proposal, that
low pressure, causing vapor formation, leading to other        system may have been sized inappropriately, resulting

www.mptmag.com                                                                       Modern Pumping Today     |   July 2021| 31
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