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(51) International Patent Classification: G21C 15/18 (2006.01) G21C 21/00 (2006.01) 

(21) International Application Number: 

(22) International Filing Date: 

(25) Filing Language: 

(26) Publication Language: 

(30) Priority Data: 16/381,153 11 April 2019 ( 11.04.2019) US 

(71) Applicant: GE-HITACHI NUCLEAR ENERGY AMERICAS LLC [US/US]; 3901 Castle Hayne Road, Wilmington, North Carolina 28401 (US). 

(72) Inventors: LENTNER, Bruce John; 3901 Castle Hayne Road, Wilmington, North Carolina 28401 (US). MISTRE- ANU, Adrian M.; 3901 Castle Hayne Road, Wilming‹ 

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(54) Title: FEEDWATER SPARGER NOZZLE REPAIR ASSEMBLY 

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PCT/US2020/024 16 1 

23 March 2020 (23.03.2020) 

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English 

English 

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ton, North Carolina 28401 (US). MATSUMOTO, Jack Toshio; 3901 Castle Hayne Road, Wilmington, North Car‹ olina 28401 (US). 

(74) Agent: YACURA, Gary D.; Harness, Dickey & Pierce, P.L.C., 11730 Plaza America Dr., Suite 600, Reston, Vir‹ ginia 20190 (US). 

(81) Designated States (unless otherwise indicated, for every kind of national protection av ailable) . AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, WS, ZA, ZM, ZW. 

(57) Abstract: A feedwater sparger repair assembly includes a cover plate having a partial cylindrical shape and having a nozzle opening and a pair of bolt openings extending through the cover plate. A nozzle is attached to the cover plate and surrounds the nozzle opening. A pair of T-bolts extend through a respective one of the pair of bolt openings and each include a shank having a threaded portion extending from an exterior side of the cover plate and a partial cylindrical head portion disposed at an end of the shank on an interior side of the cover plate . A pair of nuts are engaged with the threaded portion of the pair of T-bolts. The feedwater sparger repair assembly is adapted to be mounted to an opening that is cut into a core spray pipe in order to repair/replace a sparger that becomes cracked. 

