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(11)

EP 4 680 569 A1

(12)

(43) Date of publication: 21.01.2026 Bulletin 2026/04 (21) Application number: 24775486.4 (22) Date of filing: 15.03.2024

(51) International Patent Classification (IPC):  C01B 3/32(2026.01) G21D 9/00(2006.01) C07C 51/41(2006.01) C07C 55/07(2006.01) C01B 32/50(2017.01) C07C 29/151(2006.01) C07C 31/04(2006.01) (52) Cooperative Patent Classification (CPC): C01B 3/32; C01B 32/50; C07C 51/41; G21D 9/00; C07C 29/1518; C07C 51/412; G21C 1/322; C01B 2203/061; C01B 2203/1211; C01B 2203/043   C-Sets: C07C 29/1518, C07C 31/04; C07C 51/41, C07C 55/07; C07C 51/412, C07C 53/06; (86) International application number: PCT/US2024/020300 (87) International publication number: WO 2024/196818 (26.09.2024 Gazette 2024/39)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 17.03.2023 US 202363453032 P 30.03.2023 US 202363493049 P 26.01.2024 US 202463625284 P (71) Applicant: NuScale Power, LLC Corvallis, OR 97330 (US)	(72) Inventors: TSANG, Francis Y. Corvallis, Oregon 97330 (US) REYES, José N. Corvallis, Oregon 97330 (US) DEPAVIA, Luis Corvallis, Oregon 97330 (US) (74) Representative: Mathys & Squire  The Shard 32 London Bridge Street London SE1 9SG London SE1 9SG (GB)