Experience in the use of probabilistic safety analysis for the development of safety concepts for commercial high-temperature reactors

Journal Article · Tue Jul 01 00:00:00 EDT 1986 · Nucl. Technol.; (United States)

OSTI ID:5036142

Kroger, W; Wolters, J P

Advanced nuclear reactors in the Federal Republic of Germany (FRG) must analogously fulfill the deterministic safety criteria developed for the light water reactor (LWR). In earlier high-temperature reactor (HTR) concepts, the interpretation of this requirement led to exaggerated safety precautions. Efforts are being made in recent HTR concepts to develop a more specific safety concept making use of probabilistic risk assessment and probabilistic safety analysis. The basis for development and evaluation is formed by a requirement concept of frequency-oriented limits. Design-relevant accidents are divided into three categories and the appertaining maximum permissible doses are allocated based on the FRG Radiation Protection Ordinance. For even more infrequent events it must be demonstrated that the collective damage and risks remain clearly below those of a comparably large LWR. This probabilistic requirement concept has been applied to two HTR concepts under development and the result has been judged positively by a group of experts established by the Federal Ministry of the Interior. The most extensive experience for HTR-500 is discussed in detail.

• Research Organization: Institute for Nuclear Safety Research, Kernforschungsanlage Julich GmbH, 5170-Julich
• OSTI ID: 5036142
• Journal Information: Nucl. Technol.; (United States), Vol. 74:1
• Country of Publication: United States
• Language: English

Related Subjects

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LOSS OF COOLANT
REACTOR SAFETY
AFTER-HEAT REMOVAL
AUTOMATION
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220900* - Nuclear Reactor Technology- Reactor Safety
210300 - Power Reactors
Nonbreeding
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