Reactivity transients during a blowdown in a MSIV (Main Steam Isolation Valves) closure ATWS (Anticipated Transients Without Scram)
The objectives of this work are to study the consequences of the reactivity transients during a blowdown in an ATWS event with closure of the Main Steam Isolation Valves (MSIV), and to evaluate the effect of the LPCI (Low Pressure Coolant Injection) system and the sensitivity of plant response to the feedback coefficients. The present work was performed with the BNL Plant Analyzer (BPA). The BPA is a on-line, interactive BWR system code which models the non-homogeneous, non-equilibrium two-phase flow with a drift flux mixture model, the reactor kinetics with a point kinetic model, the thermal conduction with an integral method, and the control and plant protection systems with modern control theory. It also models the balance of plant (BOP) as well as the Mark I containment of a BWR/4. Thus, the BPA is a comprehensive engineering plant analyzer transients as well as accidents (e.g., ATWS and Small Break Loss of Coolant Accidents).
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6877520
- Report Number(s):
- BNL-NUREG-41417; CONF-881011-11; ON: TI88012892; TRN: 88-035606
- Resource Relation:
- Conference: Joint meeting of the European Nuclear Society and the American Nuclear Society, Washington, DC, USA, 30 Oct 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
BWR TYPE REACTORS
REACTIVITY
TRANSIENTS
B CODES
BLOWDOWN
COMPUTERIZED SIMULATION
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HEAT TRANSFER
HYDRAULICS
REACTOR SAFETY
SCRAM
COMPUTER CODES
ENERGY TRANSFER
ENGINEERED SAFETY SYSTEMS
FLUID MECHANICS
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REACTOR PROTECTION SYSTEMS
REACTOR SHUTDOWN
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210100 - Power Reactors
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Light-Water Moderated
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