Influence of containment spray systems on the source term behavior of VVER-1000-type reactors

Conference · Fri Jan 01 00:00:00 EST 1993 · Transactions of the American Nuclear Society; (United States)

OSTI ID:7128972

Sdouz, G ^[1]

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1. Austrian Research Center Seibersdorf (Austria)

In Austria a research program to investigate the source term behavior of VVER-type reactors is still going on. The first two generations of VVER-type reactors were designed for 440-MW(electric) power. The next generation with 1000-MW(electric) power is known as the VVER-1000. These reactors have four loops without isolation valves, horizontal steam generators, and hexagonal fuel assemblies. In addition to the first two generations, this type has a containment structure with spray-type steam suppression. The three spray systems work autonomously with a special power supply for each system. The purpose of the containment spray system is to control the pressure within the containment by cooling and condensing steam from the atmosphere and to remove airborne aerosols. To investigate the source term behavior of VVER-type reactors, Austria acquired the Source Term Code Package (STCP) and started the program investigating a TMLB and an S[sub 1]B accident sequence. In the next step, a calculation of the TMLB sequence with working spray systems and emergency core coolant (ECC) recirculation was performed. This paper describes the results of the calculation, the comparison with the calculation without spray, and the implications for the accident management of VVER-1000-type reactors.

• OSTI ID: 7128972
• Report Number(s): CONF-931160-; CODEN: TANSAO
• Journal Information: Transactions of the American Nuclear Society; (United States), Vol. 69; Conference: American Nuclear Society (ANS) winter meeting, San Francisco, CA (United States), 14-18 Nov 1993; ISSN 0003-018X
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
CONTAINMENT SPRAY SYSTEMS
PRESSURE SUPPRESSION
WWER TYPE REACTORS
AEROSOLS
RESEARCH PROGRAMS
S CODES
COLLOIDS
COMPUTER CODES
CONTAINMENT
CONTAINMENT SYSTEMS
DISPERSIONS
ENGINEERED SAFETY SYSTEMS
ENRICHED URANIUM REACTORS
POWER REACTORS
PWR TYPE REACTORS
REACTORS
SOLS
THERMAL REACTORS
WATER COOLED REACTORS
WATER MODERATED REACTORS
220900* - Nuclear Reactor Technology- Reactor Safety
220200 - Nuclear Reactor Technology- Components & Accessories
220502 - Nuclear Reactor Technology- Environmental Aspects- Radioactive Effluents