In-Vessel Coil Material Failure Rate Estimates for ITER Design Use

Cadwallader, L.C.

doi:10.2172/1064048

Cited by 5 publications

(9 citation statements)

References 63 publications

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“…The average EBR-II core fast neutron fluence was % 1:90E þ 22 cm À2 in 1 year [25]. While the TES piping system is a lower fluence than EBR-II, the EBR-II fuel cladding is the best known large-scale usage of stainless steel in a high radiation environment so this inference of EBR-II stainless steel to the TES piping system is the best dataset at present.…”

Section: The Radiation Damage Correction Factormentioning

confidence: 96%

“…For the TES pipes (T C 308 K), the failure rate value of the fuel cladding tubes of the Experimental Breeder Reactor-II (EBR-II) was selected as the basic failure rate for all failure modes [25]. There were several reasons.…”

Section: The Selection Of the Basic Failure Ratementioning

confidence: 99%

“…(1) The dataset on stainless steel 304L was robust, with many tubes used over a long time period. (2) As a first approximation, the SS-316 LN steel was considered to be similar to stainless steel 304L, the basic failure rate of the steel 304L cladding can apply to any of the austenitic stainless steel materials [25]. (3) The tube thermal environment, radiation, pressure and liquid corrosion are similar to that of TES pipe.…”

Section: The Selection Of the Basic Failure Ratementioning

confidence: 99%

“…The literature showed that the EBR-II cladding had very low, or even non-existent, flow corrosion issues [25]. Helium gas with addition of about 0.1 % H 2 will be transported through TES pipes at 0.1 m/s, and Helium have no corrosive nature.…”

Section: The Flow and Flow Media Correction Factormentioning

confidence: 99%

“…In 2000, the applicability of the Thomas model in applied risk and reliability analysis was reviewed by Lydell [23]. Recently, the k factor method based on physics of failure models was further developed by Cadwallader, which was used to adjust fusion pipe failure rates for the ITER International Project [24][25][26].…”

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confidence: 99%

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Reliability Data Analysis for Tritium Extraction System Pipes of CN HCCB TBM

Nie

Wang

et al. 2015

J Fusion Energ

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A tritium extraction system (TES) is one of important ancillary systems of the China helium cooled ceramic breeder test blanket module (CN HCCB TBM). The high reliability and availability of TES will be needed for safety operation of circulation and processing of tritium purge gas. Probabilistic Safety Assessment (PSA) and reliability, availability, maintainability, inspectability (RAMI) analysis of the TES should be performed during the design phase according to the CN HCCB TBM plan. Accurate reliability data is required to provide meaningful results for PSA and RAMI analysis. Since there is no TES pipes failure rate data available from fusion operating experiences. Therefore, it is necessary to use the existing pipe operating experiences to calculate component failure rates of the TES pipes. In this paper, the k factor method was used to adjust the failure rates of the TES pipes under the different environments and conditions by combining physics of failure models and a conservative estimation technique. The failure rates of the TES can provide references for the optimization of TES pipes design and data support for PSA and RAMI analysis of the TES.

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Section: The Radiation Damage Correction Factormentioning

confidence: 96%

Section: The Selection Of the Basic Failure Ratementioning

confidence: 99%

Section: The Selection Of the Basic Failure Ratementioning

confidence: 99%

Section: The Flow and Flow Media Correction Factormentioning

confidence: 99%

mentioning

confidence: 99%

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