The SNRIU considers the expansion of Westinghouse fuel to be safe

The State Nuclear Regulatory Inspectorate of Ukraine does not see any “licensed” risks in expanding the operation of Westinghouse fuel assemblies as part of the diversification of nuclear fuel supplies to Ukrainian NPPs.

The State Regulatory Inspectorate came to this conclusion on the basis of data that during the operation of fuel assemblies manufactured by Westinghouse TVZ-WR during 2015-2021, the preconditions for violating the conditions of safe operation of power units were not identified.

As of March 22, 2021, according to the SNRCU, 867 Westinghouse fuel assemblies are being successfully operated as part of the mixed core zones at the Zaporizhia and South Ukrainian NPPs.

NPP

Power unit No

Number of fuel assemblies

SUNPP

2

163 TVZ-WR (32 f. a.)

SUNPP

3

134 TVZ-WR+ 29 TVZ-WR (29 f. a.) 

ZNPP

1

126 TVZ-WR (31 f. a.)

ZNPP

3

126 TVZ-WR (32 f. a.)

ZNPP

4

126 TVZ-WR (32 f. a.)

ZNPP

5

163 TVZ-WR (30 f. a.) 

Total

867 (838 TVZ-WR та 29 TVZ-WR)

From 2021, the trial operation of TVZ-WR is planned at Unit 3 of the Rivne NPP, and at Units 1 and 2 with WWER-440 reactors, NNEGC Energoatom is also considering the use of alternatives to Russian fuel assemblies.

It is planned to store spent nuclear fuel produced by Westinghouse at SUNPP and RNPP units in the future at the Centralized Spent Fuel Storage Facility in the Exclusion Zone, and from ZNPP Units at the SNF Dry Storage Facility at the ZNPP site.

According to SNRIU.