CONTEMPT 4/MOD 3: a multicompartment containment system analysis program. [PWR]

Technical Report · Wed Dec 01 04:00:00 EST 1982

DOI:https://doi.org/10.2172/6870054· OSTI ID:6870054

Cheng, T. C.; Metcalfe, L. J.; Hartman, J. E.; Mings, W. J.; Crail, A. C.

CONTEMPT4/MOD3 is a digital computer program, written in FORTRAN IV, that describes the behavior of multicompartment pressurized water reactor (PWR) containment systems and experimental containment systems subjected to postulated loss-of-coolant accident (LOCA) conditons. The program calculates the time variation of compartment pressures, temperatures, mass and energy inventories, heat structure temperature distributions, and intercompartment mass and energy exchange based on user-supplied values for compartment descriptions, time step and edit controls, and selected problem features. Analytical models available to describe containment systems include models for containment fans and pumps, cooling sprays, fan coolers, heat-conducting structures, sump drains, and PWR ice condensers. Dynamic stroage allocation (DSA) is used to limit the amount of computer core used for each problem. Optional automatic time step control allows the code to determine time step sizes within limits dictated by the user. Multicompartment capability (up to 999 individual compartments) and generalized, user-oriented input-data descriptions permit improved flexibility over previous codes in the CONTEMPT series. Analytical model descriptions, input instructions, and sample problem results are presented.

• Research Organization: EG and G Idaho, Inc., Idaho Falls (USA)
• OSTI ID: 6870054
• Report Number(s): NUREG/CR-2558; EGG-2159; ON: DE83900721
• Country of Publication: United States
• Language: English

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