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    • Temperature - Impact of chiller failure on the short-term temperature variation in the incubation of salmonids

    Metadata Updated: October 18, 2025

    In salmon recovery programs it is commonly necessary to chill incubation and early rearing temperatures to match wild development times. The most common failure mode for a chiller system is failure of the chiller or circulating pumps. Following chiller failure, the water temperature can rise from 5-7 C to 10-13 C depending on the well temperatures and ambient air temperatures.

    The speed and magnitude of the temperature increases depends on how the chillers are designed. The simplest design is a direct-coupled chiller with chilled gas/process water heat exchanger. Other chiller designs include both chilled glycol and water reservoirs. The addition of these reservoirs serves to reduce the maximum rate of temperature change following chiller failure. Increased deformities have been observed in direct-coupled chiller systems for sockeye salmon following chiller failures. Variation of temperature in incubation system following chiller failure.

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    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Date October 8, 2025
    Metadata Created Date October 19, 2024
    Metadata Updated Date October 18, 2025
    Reference Date(s) October 25, 2016 (publication)
    Frequency Of Update

    Metadata Source

    Harvested from NMFS NWFSC

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date October 8, 2025
    Metadata Created Date October 19, 2024
    Metadata Updated Date October 18, 2025
    Reference Date(s) October 25, 2016 (publication)
    Responsible Party (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:30878
    Access Constraints Cite As: Northwest Fisheries Science Center, [Date of Access]: Temperature - Impact of chiller failure on the short-term temperature variation in the incubation of salmonids [Data Date Range], https://www.fisheries.noaa.gov/inport/item/30878., Access Constraints: NA
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    Harvest Source Id ba43549f-8268-499d-bec8-91b164cb168f
    Harvest Source Title NMFS NWFSC
    Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
    Lineage The logger data is converted to cvs and Excel files.
    Metadata Language eng
    Metadata Type geospatial
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    Spatial Data Service Type
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    Temporal Extent Begin 2015-01-01
    Temporal Extent End 2015-12-01

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