Severe-accident analysis using the MAAP code: Modeling and applications

Journal Article · Tue Dec 31 04:00:00 EST 1996 · Transactions of the American Nuclear Society

OSTI ID:427065

Schlenger-Faber, B J; Paik, C Y; McCartney, M A; Henry, C E ^[1]; Chao, J ^[2]

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1. Fauske & Assoc., Inc., Burr Ridge, IL (United States)
2. Electric Power Research Inst., Palo Alto, CA (United States)

The modular accident analysis program (MAAP) is a computer code that simulates light water reactor (LWR) power plants during severe accidents. Given a set of initiating events and operator actions, MAAP predicts the plant`s response as the accident progresses through such potential events as core relocation, vessel failure, and containment failure. The results are used to understand the sequence of events, evaluate the influence of safety systems, and assess the effects of operator actions. MAAP treats the spectrum of physical processes that could occur during an accident. These include steam formation, fuel heatup, cladding oxidation, core relocation, lower head-core debris dynamics such as in-vessel and ex-vessel cooling, vessel penetration and lower head failure, debris entrainment, ignition of combustible gases, and fission product release, transport, and deposition. The code also models all important safety system functions such as emergency core cooling, primary system venting, and containment heat removal.

• OSTI ID: 427065
• Report Number(s): CONF-961103--
• Journal Information: Transactions of the American Nuclear Society, Journal Name: Transactions of the American Nuclear Society Vol. 75; ISSN 0003-018X; ISSN TANSAO
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
COMPUTERIZED SIMULATION
CONTAINMENT
ENGINEERED SAFETY SYSTEMS
FISSION PRODUCT RELEASE
M CODES
MELTDOWN
PERFORMANCE
REACTOR ACCIDENTS
REACTOR VESSELS