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Study on Fluidelastic Instability in Nuclear Steam Generators for Canadian Nuclear Safety Commission

Canada is seeking offers from qualified Offerors to provide professional services to deliver the “Enhanced understanding of fluidelastic instability (FEI) in nuclear steam generators, specifically in the streamwise (in-line) direction, to ensure the long-term reliability and structural integrity of tube arrays under tw…

Source ID: CA-NOTICE-cb-305-22289924-000

Scope overview

Canada is seeking offers from qualified Offerors to provide professional services to deliver the “Enhanced understanding of fluidelastic instability (FEI) in nuclear steam generators, specifically in the streamwise (in-line) direction, to ensure the long-term reliability and structural integrity of tube arrays under two-phase flow conditions” study to Canadian Nuclear Safety Commission.

The scope of this study includes the following three interrelated components: • Establishing a test setup to facilitate observation and assessment of local void fraction behavior and flow-induced responses in tube arrays representative of CANDU steam generators.

The setup is based on established configurations and industry knowledge, with the goal of supporting technical evaluation under controlled two-phase flow conditions. • Execution of flow assessments using multiple test sections with representative pitch ratios.

Tests are conducted across a range of flow conditions (approximately 50 to 500 kg/m²·s mass flux) to capture relevant stability behavior under typical operating parameters. • Data collection and technical analysis to generate a structured dataset that can support future studies and inform regulatory assessments.

The results contribute to an improved understanding of how tube arrays respond under various conditions, particularly regarding the onset and behavior of streamwise fluidelastic effects.

Notice type: Request for Proposal Procurement method: Competitive - Open bidding Selection criteria: Highest Combined Rating of Technical Merit and Price Trade agreements: *Canada-Chile Free Trade Agreement (CCFTA) *Canada-Panama Free Trade Agreement *Canada-Korea Free Trade Agreement (CKFTA) *Canada-Colombia Free Trade Agreement *Canadian Free Trade Agreement (CFTA) *Canada-Peru Free Trade Agreement (CPFTA) *Canada-Honduras Free Trade Agreement Regions of delivery: *National Capital Region (NCR) Contact: Lucie Frouin (solicitation-demandedesoumission@cnsc-ccsn.gc.ca) None

Statusopen
CategoryLegal & Compliance
CountryCanada
Publish dateNov 4, 2025
Submission deadlineDec 4, 2025
Estimated value
Notice typetender_notice
Sourceca-canadabuys-notices
BuyerCanadian Nuclear Safety Commission (CNSC)
Buyer websitehttps://canadabuys.canada.ca/
CityOttawa

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Emailsolicitation-demandedesoumission@cnsc-ccsn.gc.ca
OrganizationCanadian Nuclear Safety Commission (CNSC)

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Tags & Signals

fluidelastic instabilitynuclear steam generatorstube arraystwo-phase flowCANDU reactorsstructural integrityflow-induced vibrationregulatory assessment
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