ML18121A254

Enclosurequest for Additional Information (05/01/2018, E-Mail from C. Jacobs/Dsfm to S. Jurek Monticello Exemption: NRC Clarification Questions on RAI#1 Responses)

ML18121A254
Person / Time
Site:	Monticello
Issue date:	05/01/2018
From:	Jacobs C J Spent Fuel Licensing Branch
To:	Jurek S M Nuclear Management Co
Jacobs C J
Shared Package
ML18121A250	List: ML18121A252 ML18121A254
References
Download: ML18121A254 (4)

Text

NSPM determined there is a reasonable expectation that the ITCP welds for DSCs 11-15 have an actual thickness of 0.25" because the weld groove height is 0.25", the confirmation from the as-measured data from DSC 16 PAUT, the consistency resulting from the adherence to the qualified weld procedure and techniques, a limited set of qualified welders using the same GTAW machine while implementing a controlled fit-up for the small weld groove volume, and maintenance of a consistent weld deposition rate. These considerations are supported by the PAUT measurements and assessment provided by the SIA chief welding engineer VID review of the DSCs 13 and 16 ITCP welds.

In some cases, periodic grinding was apparent and in other cases, local weld repairs were observed.