ML18354B167

ABWR DC Renewal - ECCS Suction Strainer Design Audit Report

ML18354B167
Person / Time
Site:	05200045
Issue date:	01/24/2019
From:	Adrian Muniz NRC/NRO/DLSE
To:	Jennivine Rankin NRC/NRO/DLSE
Muniz A
References
Download: ML18354B167 (11)

Text

/RA/

Code of Federal Regulations

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5.1 ECCS Strainer Sizing Evaluation

GE adopted an empirical means for correlating the test data. Because GE chose to correlate head loss in term of superficial parameters (such as circumscribed velocity) that are easy to determine in plant applications, concerns were identified regarding the generic applicability of the GE correlation, especially application beyond the test range. However, upon further review the staff believes that GE introduced sufficient margin to compensate for any deficiencies in the correlation. Therefore, the staff concluded that this margin would allow GE to apply its correlation within a narrow range beyond the range for which the test data was obtained. LANL also conducted independent analyses to evaluate the applicability of GE methodology to each of the plant applications cited in GE's submittals. Based on the results of these calculations, the staff concluded that the use of GE's hydraulics design method is acceptable for all the plants with exception noted above.

5.2 ECCS Strainer Structural Evaluation **

5.3 Chemical

Effects Evaluation

5.4 In-vessel Downstream Effects Evaluation