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Abstract

THE STUDY PRESENTS A METHODOLOGY FOR QUANTITATIVE ASSESSMENT OF THE BENEFIT YIELDED BY THE VARIOUS ENGINEERED SAFETY SYSTEMS OF A NUCLEAR REACTOR CONTAINMENT FROM THE STANDPOINT OF THEIR CAPACITY TO PROTECT THE ENVIRONMENT COMPARED TO THEIR CONSTRUCTION COSTS. THE BENEFIT IS DERIVED FROM AN ESTIMATE OF THE POSSIBLE DAMAGE FROM WHICH THE ENVIRONMENT IS PROTECTED, TAKING ACCOUNT OF THE PROBABILITIES OF OCCURRENCE OF MALFUNCTIONS AND ACCIDENTS. FOR DEMONSTRATION PURPOSES, THE METHODOLOGY WAS APPLIED TO A 1300-MWE PWR NUCLEAR POWER STATION. THE ACCIDENT SEQUENCE CONSIDERED WAS THAT OF A MAJOR LOSS-OF-COOLANT ACCIDENT AS INVESTIGATED IN DETAIL IN THE GERMAN RISK STUDY. AFTER DETERMINATION OF THE BENEFITS AND COST/BENEFIT RATIO FOR THE POWER PLANT AND THE CONTAINMENT SYSTEMS AS DESIGNED, THE PERFORMANCE CHARACTERSITICS OF THREE SUB SYSTEMS, THE LEAKOFF SYSTEM, ANNULUS EXHAUST AIR HANDLING SYSTEM AND SPRAY SYSTEM, WERE VARIED. FOR THIS PURPOSE, THE PARAMETERS WHICH DESCRIBE THESE SYSTEMS IN THE ACTIVITY RELEASE PROGRAMME WERE ALTERED. THE COSTS WERE SIMULTANEOUSLY ALTERED IN ORDER TO TAKE ACCOUNT OF THE PERFORMANCE DIVERGENCES. BY VARYING THE PERFORMANCE OF THE INDIVIDUAL SUB-SYSTEMS AN OPTIMISATION IN DESIGN OF THE SYSTEMS CAN BE ACHIEVED.

Additional information

Authors: LAYMEYER LAYMEYER INTERNATIONAL GMBH, FRANKFURT, D, LAYMEYER INTERNATIONAL GMBH, FRANKFURT, D
Bibliographic Reference: EUR 11699 EN (1988) FS, PP 120, ECU 10.00, AVAILABILITY: EUROFFICE, LUXEMBOURG, BP 1003, GDL
Availability: Can be ordered online
Record Number: 1989126224500 / Last updated on: 1989-04-01
Category: PUBLICATION
Available languages: en
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