Parallel-channel effects and long-term cooling during emergency-core cooling in a BWR/4

Technical Report · Fri Jul 01 04:00:00 EDT 1983

DOI:https://doi.org/10.2172/5931723· OSTI ID:5931723

Fakory, M. R.; Lahey, Jr., R. T.

The effectiveness of the core spray-cooling system (CSCS) and the low-pressure-coolant-injection (LPI) system during a design-basis accident (DBA) in a boiling-water nuclear reactor (BWR) was investigated. This investigation considered a BWR/4 with both intact and broken jet pumps during the short-term and long-term core cooling of a postulated loss-of-coolant accident (LOCA). The experiments were performed in a special parallel channel effects (PCE) test section in which Freon-114 was used to simulate the conditions in a BWR/4. The PCE test section simulated the major regions of a BWR/4, namely: three heated parallel channels; a bypass channel; a bypass-to-channel leakage path; a jet pump; lower and upper plena; a steam separator and standpipe; and a downcomer. Extensive use of glass components in the PCE test section provided visual observation of the thermal-hydraulic phenomena.

• Research Organization: Rensselaer Polytechnic Inst., Troy, NY (USA). Dept. of Nuclear Engineering
• OSTI ID: 5931723
• Report Number(s): NUREG/CR-3376; ON: DE83902796
• Country of Publication: United States
• Language: English

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