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Passive safety systems for integral reactors

Abstract

In this paper, a wide range of passive safety systems intended for use on integral reactors is considered. The operation of these systems relies on natural processes and does not require external power supplies. Using these systems, there is the possibility of preventing serious consequences for all classes of accidents including reactivity, loss-of-coolant and loss of heat sink as well as severe accidents. Enhancement of safety system reliability has been achieved through the use of self-actuating devices, capable of providing passive initiation of protective and isolation systems, which respond immediately to variations in the physical parameters of the fluid in the reactor or in a guard vessel. For beyond design base accidents accompanied by complete loss of heat removal capability, autonomous self-actuated ERHR trains have been proposed. These trains are completely independent of the secondary loops and need no action to isolate them from the steam turbine plant. Passive safety principles have been consistently implemented in AST-500, ATETS-200 and VPBER 600 which are new generation NPPs developed by OKBM. Their main characteristic is enhanced stability over a wide range of internal and external emergency initiators. (author). 10 figs.
Authors:
Kuul, V S; Samoilov, O B [1] 
  1. OKB Mechanical Engineering (Russian Federation)
Publication Date:
Dec 01, 1996
Product Type:
Conference
Report Number:
IAEA-TECDOC-920; CONF-9411339-
Reference Number:
SCA: 220200; PA: AIX-28:021627; EDB-97:039916; SN: 97001747462
Resource Relation:
Conference: Advisory group meeting on technical feasibility and reliability of passive safety systems for nuclear power plants, Juelich (Germany), 21-24 Nov 1994; Other Information: PBD: Dec 1996; Related Information: Is Part Of Technical feasibility and reliability of passive safety systems for nuclear power plants. Proceedings of an advisory group meeting; PB: 357 p.
Subject:
22 NUCLEAR REACTOR TECHNOLOGY; POWER REACTORS; REACTOR SAFETY; SAFETY ENGINEERING; AFTER-HEAT REMOVAL; DESIGN; REACTOR ACCIDENTS; RELIABILITY
OSTI ID:
440026
Research Organizations:
International Atomic Energy Agency, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1011-4289; Other: ON: DE97615987; TRN: XA9743177021627
Availability:
INIS; OSTI as DE97615987
Submitting Site:
INIS
Size:
pp. 311-319
Announcement Date:

Citation Formats

Kuul, V S, and Samoilov, O B. Passive safety systems for integral reactors. IAEA: N. p., 1996. Web.
Kuul, V S, & Samoilov, O B. Passive safety systems for integral reactors. IAEA.
Kuul, V S, and Samoilov, O B. 1996. "Passive safety systems for integral reactors." IAEA.
@misc{etde_440026,
title = {Passive safety systems for integral reactors}
author = {Kuul, V S, and Samoilov, O B}
abstractNote = {In this paper, a wide range of passive safety systems intended for use on integral reactors is considered. The operation of these systems relies on natural processes and does not require external power supplies. Using these systems, there is the possibility of preventing serious consequences for all classes of accidents including reactivity, loss-of-coolant and loss of heat sink as well as severe accidents. Enhancement of safety system reliability has been achieved through the use of self-actuating devices, capable of providing passive initiation of protective and isolation systems, which respond immediately to variations in the physical parameters of the fluid in the reactor or in a guard vessel. For beyond design base accidents accompanied by complete loss of heat removal capability, autonomous self-actuated ERHR trains have been proposed. These trains are completely independent of the secondary loops and need no action to isolate them from the steam turbine plant. Passive safety principles have been consistently implemented in AST-500, ATETS-200 and VPBER 600 which are new generation NPPs developed by OKBM. Their main characteristic is enhanced stability over a wide range of internal and external emergency initiators. (author). 10 figs.}
place = {IAEA}
year = {1996}
month = {Dec}
}