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Hydro South Tests Nuclear Power Vertical Condensate Pump at Test Lab

Hydro South recently completed the overhaul of a Condensate pump at its facility outside of Atlanta, GA. This pump is a vertical can-type, motor-driven centrifugal condensate pump installed at a nuclear power facility in the Southeastern US. The condensate system has three identical pumps that operate in parallel (with a maximum of two pumps normally in service and an installed spare).

The pumps are designed to operate continuously for the normal 18-month fuel cycle with no maintenance attention. Because the condensate system is critical to plant operation, it is imperative to verify the performance of the pump before getting it back in service. Continue reading

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A Hydro University Testimonial

Eduardo Orozco Gallegos (condition monitoring intern) on Hydro University’s offerings and use in company onboarding:

“As a current Mechanical Engineering undergraduate student, I can truly say that the courses I took from Hydro University were phenomenal! They combined components of my Vibration, Thermodynamics, and other ME courses and turned them into concise, but still thorough, classes. Quick but effective review quizzes after every course subsection ensured that the most important information and concepts were retained.”

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Damus Limited Executes an Exclusive Agency Agreement with Hydro, Inc.

We are pleased to inform you that Damus Limited has executed an exclusive agency agreement with Hydro, Inc.

logo, icon, company nameThis agreement authorizes Damus to actively market, develop and pursue, inter-alia, engineered pump solution opportunities which will not only benefit Hydro and Damus but the various sectors of the economies of Trinidad and Tobago, as well as the wider Caribbean region. Whilst Damus is traditionally known in the fabricating and stationary mechanical equipment maintenance space, we see this partnership as a strategic initiative to increase our value proposition to our customers.

As the leading US technical service provider for pumps, Hydro, Inc. has assisted global customers with pump repair, utilizing engineering/reverse engineering capabilities, test lab services, and parts production (Hydro Parts Solutions). Since 1969, Hydro has proven its capability to repair and re-engineer pumps faster and at a higher or equal level of quality than even the OEMs.

Hydro also possesses an Enterprise Resource Planning (ERP) system specifically configured for the pump re-building process. This system catalogs all parts built for the customer in a database which allows Hydro to efficiently provide backup parts for future repairs and overhauls with shorter delivery times than if these parts were ordered directly from the OEM.

Hydro and Damus would welcome the opportunity to present our full suite of services to your technical and procurement teams to gain an understanding of your Company’s needs and assess how we may best be of service. Given current Covid-related limitations on travel and meetings in person, we propose that our initial meeting be held virtually so that Hydro’s overseas experts may participate. Ultimately, our aim will be for Damus to become registered and prequalified to access future bid or direct-source opportunities related to the services offered by Hydro/Damus.

We trust that the Hydro/Damus association and the services being offered will be of interest to you and your team and we look forward to arranging a meeting in the future to initiate discussions.

Please do not hesitate to contact us today or call our Damus representative, Josiah Ragbir, at (868) 751-6402 should you require additional information.

Gearbox Refurbishment Solves Performance Problems in Australia

Not only does Hydro Australia service centrifugal pumps, but for over twenty years, the team has been refurbishing gearboxes for their clients. Being part of Hydro’s worldwide network of service centers enables Hydro Australia to achieve great success by working alongside fellow engineers for technical support, expedited parts solutions, and the shared wealth of Hydro’s cross-OEM experience. On this particular gearbox refurbishment, Hydro Australia called upon Hydro Richards in Canada to manufacture two new white metal bearings.

After initial blasting and inspection, major issues including cracks were discovered in the upper half of the casing, requiring metal stitch repairing. Once the cracks were repaired, the casing split faces were decked and the casing was line bored. Utilizing Hydro Australia’s state-of-the-art laser scanning equipment in their Morwell, Victoria workshop, the team reverse-engineered the input shaft and all four white metal bearings. Two white metal bearings were also relined, a new input shaft was manufactured from forged material and balanced after fitting the bull gear and final assembly. A team of technicians then traveled to the site to install the gearbox and assisted in commissioning the pump train.

For more information on Hydro Australia pump and gearbox refurbishing, please contact Hydro Australia on +61(03)5165 0390 or visit hydroaustralia.com.au

Condition Monitoring Uncovers Misalignment Issues

Hydro, Inc. is currently supporting a major refinery by providing remote condition monitoring on their critical rotating equipment. Centaur, Hydro’s condition monitoring solution, continuously collects real-time vibration and surface temperature levels on the customer’s pumps and drive trains. With these sensors, Hydro can work directly with the local technicians to utilize and take action upon the data to optimize rotating equipment maintenance strategies.

Alarm thresholds are chosen based on API standards. Hydro’s monitoring software is programmed to automatically report any alarm or emergent issue to Hydro’s engineering team and to the engineering team of the refinery. The graphs showcase a startup event with elevated vibration amplitude levels above the alarm 2 thresholds (>0.300 ips RMS) at the pump inboard and motor inboard sensor locations in the horizontal direction.

In this case, Hydro’s engineering team suspected that the elevated vibration amplitude levels were a result of a misalignment condition. Misalignment occurs when the centerlines of the coupled shafts do not coincide, creating high radial forces across the coupling. In addition, misalignment is indicated by excessive amplitude levels of 1x RPM and 2x RPM response. The FFT Spectrum graphs below displays a dominant excitation frequency at 1x RPM (59.688Hz) and 2x RPM (119.37Hz) for both the pump inboard and motor inboard sensor locations.

Phase analysis has been performed on the pump inboard and motor inboard sensor locations to allow Hydro’s engineers to further confirm the diagnosis of misalignment. Misalignment is characterized by a phase difference of 180° ±30° between the coupled components. Referencing the phase difference chart, the phase difference between the pump inboard and motor inboard sensor locations is 195°, within range of the 180° ±30° phase rule.

Following the analysis, Hydro’s engineering team notified the customer of the apparent issue and recommended that the machine train be inspected and realigned at the earliest convenience. Hydro will reassess the vibration amplitude levels of the machine train once the alignment has been complete.

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