McGuire Nuclear Station and Alden Research Laboratory recently completed an extensive computational and experimental study characterizing the operating fluid mechanics and debris clean-out behavior of a rotating-drum strainer. The strainers are used in the plant for raw water (RN) and are installed on the suction side of the RN system pumps. The study served a twofold purpose. The first part of the study identified the requirements for flow withdrawal from the strainer to ensure adequate cleaning performance. It also identified the maximum debris loading rate at which the strainer could reject debris into the outlet channel [1]. The findings defined input to the second part of the study, the backwash pump performance evaluation, which is the focus of this paper. The backwash pumps will be installed to backwash the strainers with performance requirements based on the results of part one of the study. MPR Associates joined the effort to evaluate different pumps for performance under normal operating and design basis conditions. A test loop was constructed that allowed controlled debris injection at atmospheric and vacuum conditions. Vacuum condition performance is required since some operating conditions generate pressures inside the strainer near 9 ft abs. This paper summarizes the performance differences by pump type and discusses the characteristics of debris-laden performance relative to standard performance and the influence of degraded conditions on debris handling.
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ASME 2011 Power Conference collocated with JSME ICOPE 2011
July 12–14, 2011
Denver, Colorado, USA
Conference Sponsors:
- Power Division
ISBN:
978-0-7918-4460-1
PROCEEDINGS PAPER
Debris Laden Backwash Pump Performance Evaluation
Amie M. Humphrey,
Amie M. Humphrey
Alden Research Laboratory, Holden, MA
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Ludwig C. Haber,
Ludwig C. Haber
Alden Research Laboratory, Holden, MA
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James M. Smith,
James M. Smith
Duke Energy (McGuire Nuclear Station), Huntersville, NC
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James N. Wiggin
James N. Wiggin
MPR Associates, Inc., Alexandria, VA
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Amie M. Humphrey
Alden Research Laboratory, Holden, MA
Ludwig C. Haber
Alden Research Laboratory, Holden, MA
James M. Smith
Duke Energy (McGuire Nuclear Station), Huntersville, NC
James N. Wiggin
MPR Associates, Inc., Alexandria, VA
Paper No:
POWER2011-55227, pp. 87-94; 8 pages
Published Online:
February 28, 2012
Citation
Humphrey, AM, Haber, LC, Smith, JM, & Wiggin, JN. "Debris Laden Backwash Pump Performance Evaluation." Proceedings of the ASME 2011 Power Conference collocated with JSME ICOPE 2011. ASME 2011 Power Conference, Volume 2. Denver, Colorado, USA. July 12–14, 2011. pp. 87-94. ASME. https://doi.org/10.1115/POWER2011-55227
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