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Preliminary failure modes and effects analysis on Korean HCCR TBS to be tested in ITER
•Postulated initiating events are identified through failure modes and effects analysis on the current HCCR TBS design.•A set of postulated initiating events are selected for consideration of deterministic analysis.•Accident evolutions on the selected postualted initiating events are qualitatively d...
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Published in: | Fusion engineering and design 2015-10, Vol.98-99, p.1715-1718 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | •Postulated initiating events are identified through failure modes and effects analysis on the current HCCR TBS design.•A set of postulated initiating events are selected for consideration of deterministic analysis.•Accident evolutions on the selected postualted initiating events are qualitatively described for deterministic analysis.
Korean Helium cooled ceramic reflector (HCCR) Test blanket system (TBS), which comprises Test blanket module (TBM) and ancillary systems in various locations of ITER building, is operated at high temperature and pressure with decay heat. Therefore, safety is utmost concern in design process and it is required to demonstrate that the HCCR TBS is designed to comply with the safety requirements and guidelines of ITER. Due to complexity of the system with many interfaces with ITER, a systematic approach is necessary for safety analysis. This paper presents preliminary failure modes and effects analysis (FMEA) study performed for the HCCR TBS. FMEA is a systematic methodology in which failure modes for components in the system and their consequences are studied from the bottom-up. Over eighty failure modes have been investigated on the HCCR TBS. The failure modes that have similar consequences are grouped as postulated initiating events (PIEs) and total seven reference accident scenarios are derived from FMEA study for deterministic accident analysis. Failure modes not covered here due to evolving design of the HCCR TBS and uncertainty in maintenance procedures will be studied further in near future. |
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ISSN: | 0920-3796 1873-7196 |
DOI: | 10.1016/j.fusengdes.2015.04.022 |