Evaluation of ECC related phenomena during semiscale MOD-1 isothermal tests

Technical Report · Sat Nov 01 04:00:00 EST 1975

DOI:https://doi.org/10.2172/4099616· OSTI ID:4099616

Hanson, D. J.; French, R. T.; Shaffer, C. J.

Selected experimental data from tests performed during the Semiscale Mod- 1 isothermal test series are analyzed. The analysis is confined to data that describe phenomena related to the injection of emergency core coolant (ECC). The analysis is directed at the ECC related phenomena in the intact loop cold leg, inlet annulus, downcomer, and lower plenum because, depending on injection location, some or all of these components will be in contact with the ECC as it flows to a position where cooling of an active core could result. Specifically, the condensation phenomena that occur in the intact loop cold leg, inlet annulus, and downcomer are analyzed along with dowmcomer heat transfer counter-current flow phenomena to determine their effects on ECC delivery. The effectiveness of injecting ECC at various locations in the Semiscale Mod-1 system is evaluated. (auth)

• Research Organization: Aerojet Nuclear Co., Idaho Falls, Idaho (USA)
• DOE Contract Number: E(10-1)-1375
• NSA Number: NSA-33-014066
• OSTI ID: 4099616
• Report Number(s): ANCR--1239
• Country of Publication: United States
• Language: English

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