Category Archives: Design of Reactor Containment Systems for Nuclear Power Plants

Correlation of load combination and acceptance criteria

4.69. Table 3 presents a minimum set of recommended load combinations for a typical pressurized water reactor. Their applicability should be checked and the list modified or new lists created for specific applications, with account taken of the actual features of the design. For example, design specific load tables may be needed for penetrations, air locks or hatches. Load combinations […]

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ICE CONDENSER CONTAINMENT IN PRESSURIZED WATER REACTORS

I-7. The ice condenser containment (Fig. I-3) system in pressurized water reactors uses a concept for the pressure suppression system in which the high pressure steam-air mixture resulting from an accident conditions pipe rupture is directed through vent doors into chambers containing baskets filled with ice. The steam condenses onto the surface of the ice in the baskets.

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INTRODUCTION

BACKGROUND 1.1. This Safety Guide was prepared under the IAEA programme for safety standards for nuclear power plants. It is a revision of the Safety Guide on Design of the Reactor Containment Systems in Nuclear Power Plants (Safety Series No. 50-SG-D12) issued in 1985 and supplements the Safety Require­ments publication on Safety of Nuclear Power Plants: Design [1]. The present […]

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GENERATION OF COMBUSTIBLE GASES

III—12. The generation and combustion of large volumes of hydrogen and carbon monoxide are severe accident phenomena that can threaten the integrity of the containment. The major cause of the generation of hydrogen is the oxidation of zirconium metal and, to a lesser extent, the interaction of steel or any other metallic component with steam when the metal reaches tempera­tures […]

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DESIGN OF CONTAINMENT SYSTEMS FOR OPERATIONAL STATES AND FOR DESIGN BASIS ACCIDENTS

GENERAL Performance of containment systems 1.55. The performance parameters for containment systems should be established in accordance with the functions to be performed in the operational states or design basis accident conditions assumed in the design of the plant. In particular, performance in terms of structural behaviour and leaktightness should be established for the entire period of an accident, including […]

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GUIDELINES FOR SEVERE ACCIDENT MANAGEMENT

5.64. Guidelines for the management of severe accidents (severe accident management guidelines (SAMGs)) should be aimed primarily at maintaining or restoring the performance of the containment. SAMGs should be developed for managing accident conditions in co-ordination with on-site and off-site emergency organizations. SAMGs should be established to supplement, but not to replace, provisions in the design to prevent the failure […]

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