6-9

Fig.6-9 Numerical results of NNH and powered operation (PO) tests for a HTTR

The numerical results of non-dimensional ROT normalized by change of RITC showed superior CTLFA in the LPC based on NNH tests (a). The numerical results assuming 80% of the rated power in LPC showed that the CTLFA were superior to those of rated power to restrict the increase of ROT 7 ℃ smaller than the SAL in case that a stepwise temperature fluctuation of 10 ℃ was imposed on the RITC (b), which was referred from the design of commercial HTGR.

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