Failure rates for tritium piping and for flame arrestors have been
estimated from TSTA TWT system operating experience. The failure
rates are given in Table 1. These failure rates from TSTA operating
experience gave good comparisons to other failure rates fromPlease cite this article in press as: L.C. Cadwallader, R.S. Willms, TSTA piping and flame arrestor operating experience data, Fusion Eng.
Des. (2014), http://dx.doi.org/10.1016/j.fusengdes.2014.11.013
ARTICLE IN PRESS G Model
FUSION-7647; No. of Pages4
4 L.C. Cadwallader, R.S. Willms / Fusion Engineering and Design xxx (2014) xxx–xxx
comparable and matured industrial equipment in the most similar
applications to the TWT, giving confidence that these estimates
from TSTA are also mature and can be applied to other tritiumbearing
components operating under similar conditions. The TSTA
TWT flame arrestor was never challenged to operate. Some testing
data on industrial flame arrestors were used to calculate a demand
failure rate for crimped metal ribbon units. These failure rates from
TSTA can be applied to other tritium systems whose operating
parameters are similar to those from TSTA. Work will continue
in reducing TSTA operating experiences to component failure rate
values
Failure rates for tritium piping and for flame arrestors have beenestimated from TSTA TWT system operating experience. The failurerates are given in Table 1. These failure rates from TSTA operatingexperience gave good comparisons to other failure rates fromPlease cite this article in press as: L.C. Cadwallader, R.S. Willms, TSTA piping and flame arrestor operating experience data, Fusion Eng.Des. (2014), http://dx.doi.org/10.1016/j.fusengdes.2014.11.013ARTICLE IN PRESS G ModelFUSION-7647; No. of Pages44 L.C. Cadwallader, R.S. Willms / Fusion Engineering and Design xxx (2014) xxx–xxxcomparable and matured industrial equipment in the most similarapplications to the TWT, giving confidence that these estimatesfrom TSTA are also mature and can be applied to other tritiumbearingcomponents operating under similar conditions. The TSTATWT flame arrestor was never challenged to operate. Some testingdata on industrial flame arrestors were used to calculate a demandfailure rate for crimped metal ribbon units. These failure rates fromTSTA can be applied to other tritium systems whose operatingparameters are similar to those from TSTA. Work will continuein reducing TSTA operating experiences to component failure ratevalues
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