ML18141A885

LLC - Submittal of Changes to Final Safety Analysis Report, Section 5.2, Integrity of Reactor Coolant Boundary

ML18141A885
Person / Time
Site:	NuScale
Issue date:	05/21/2018
From:	Rad Z NuScale
To:	Document Control Desk, Office of New Reactors
References
LO-0518-60121
Download: ML18141A885 (6)

Text

.::-*:*.. NU SCALE LO-0518-60121

.:. .:. POWER' May21,2018 Docket No.52-048 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738

SUBJECT:

NuScale Power, LLC Submittal of Changes to Final Safety Analysis Report, Section 5.2, Integrity of Reactor Coolant Boundary

REFERENCES:

Letter from NuScale Power, LLC to Nuclear Regulatory Commission, "Nu Scale Power, LLC Submittal of the NuScale Standard Plant Design Certification Application, Revision 1," dated March 15, 2018 (ML18086A090)

During review of the NuScale Power, LLC (NuScale) Final Safety Analysis Report (FSAR) and associated engineering documents, NuScale identified clarifications and items that required correction. Specifically, during review of FSAR section 5.2, Integrity of Reactor Coolant Boundary, Nu Scale identified that Table 5.2-4, Reactor Coolant Pressure Boundary Component and Support Materials Including Reactor Vessel, Attachments, and Appurtenances, and Table 5.2-7, Reactor Vessel Internals Inspection Elements, contained information that required correction. The Enclosure to this letter provides a mark-up of the FSAR pages incorporating revisions to Section 5.2 in red line/

strikeout format. NuScale will include this change as part of a future revision to the Nu Scale Design Certification Application.

This letter makes no regulatory commitments or revisions to any existing regulatory commitments.

Please feel free to contact Carrie Fosaaen, Licensing Project Manager (LPM) at (541) 452-7126 or at cfosaaen@nuscalepower.com if you have any questions.

Sincerely,

~~*

Zackary W. Rad Director, Regulatory Affairs NuScale Power, LLC Distribution: Samuel Lee, NRC, OWFN-8G9A Gregory Cranston, NRC, OWFN-8G9A Bruce Bavol, NRC, OWFN-8G9A

Enclosure:

"Changes to NuScale Final Safety Analysis Report Section 5.2, Integrity of Reactor Coolant Boundary" NuScale Power, LLC 1100 NE Circle Blvd , Suite 200 Corvallis, Oregon 97330 Office 541.360-0500 Fax 541.207.3928 www.nuscalepower.com

LO-0518-60121

Enclosure:

Changes to NuScale Final Safety Analysis Report Section 5.2, Integrity of Reactor Coolant Boundary NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvallis, Oregon 97330 Office 541.360-0500 Fax 541.207.3928 www.nuscalepower.com

NuScale Final Safety Analysis Report Integrity of Reactor Coolant Boundary RAI 05.02.03-1, RAI 05.02.03-9, RAI 05.02.03-12, RAI 05.03.01-3, RAI 05.04.02.01-6, RAI 06.01.01-3, RAI 08.01-2 Table 5.2-4: Reactor Coolant Pressure Boundary Component and Support Materials Including Reactor Vessel, Attachments, and Appurtenances Component Specification Alloy Designation (Grade, Class, or Type)1 Reactor Vessel Lower RPV section flange shell SA-508 Grade 3, Class 1 RPV bottom head Core support blocks RPV top head SA-508 Grade 3, Class 2 PZR Shell Integral steam plenum Upper RPV flanged transition shell Steam plenum access ports Upper RPV SG shell Lower RPV SG shell Feed plenum access ports RPV support gussets SA-533 Type B, Class 2 RPV support plates Core barrel guides SA-479 or SA-240 Type 304 with 0.03% max carbon Pressure instrument tap swagelok reducers SA-479 Type 304/304L Threaded inserts for:

RSV flanges RPV instrument seal assembliesInstrumentation and controls (I&C) access ports PZR heater access ports Steam plenum access ports Feed plenum access ports RPV instrument seal assembliesI&C access port covers SA-240 Type 304/304L I&C access port cover threaded fastenersRPV SB-637SA-193 Alloy 718 (UNS N07718)B8, Class 1 instrument seal assemblies set screws RPV instrument seal assemblies swagelok male SA-479 Type 316/316L connectors RPV flange leak detection tube SA-312 Type 316L; Seamless Threaded fasteners, nuts, and washers for: SB-637 Alloy 718 (UNS N07718)

Main RPV flange RSV flanges RPV instrument seal assembliesI&C access ports PZR heater access ports Steam plenum access ports Feed plenum access ports PZR pressure taps SB-166 Alloy 690 (UNS N06690)

Thermowell nozzles Tier 2 5.2-33 Draft Revision 2

NuScale Final Safety Analysis Report Integrity of Reactor Coolant Boundary RAI 04.05.02-2, RAI 05.04.02.01-6 Table 5.2-7: Reactor Vessel Internals Inspection Elements Description Location Examination Examination Notes Category Method Core Support Components Reflector Block - Bottom Core Support B-N-3 VT-3 Assembly Reflector Block Intermediate Core Support B-N-3 VT-1 Required VT-3 Assembly augmented to VT-1.

Exam will be of the interior surface, checking for a gap developing between reflector blocks.

Reflector Block Top Core Support B-N-3 VT-3 Assembly Reflector Block Alignment Pins Core Support B-N-3 VT-1 Inspection only required Assembly when reflector blocks are removed for another reason Core Barrel Core Support B-N-3 VT-1 Required VT-3 Assembly augmented to VT-1 of accessible surfaces Lower core Plate Core Support B-N-3 VT-1 Required VT-3 Assembly augmented to VT-1 of accessible surfaces Upper Core Plate Lower Riser B-N-3 VT-3 Assembly Lower Core Plate Alignment Pins Core Support B-N-3 VT-3 Assembly Upper Support Block Core Support B-N-2 VT-1 Assembly Core Barrel to Lower Core Plate Core Support B-N-2 VT-1 Assembly Fuel Pins Lower Riser B-N-3 VT-1 Required VT-3 Assembly augmented to VT-1 Fuel Pins Caps Lower Riser B-N-3 VT-1 Required VT-3 Assembly augmented to VT-1 Fuel Pin Capture Weld Lower Riser B-N-2 VT-1 Assembly Shared Fuel Pins and Nuts Core Support B-N-3 VT-1 Required VT-3 Assembly augmented to VT-1 Lower Riser to Upper Core Plate Lower Riser B-N-3 VT-3 Assembly ICIGT Bottom Flag ICIGT 1 to Upper Core Lower Riser B-N-3 VT-1 Required VT-3 Plate Assembly augmented to VT-1 Upper Seismic Belleville Washers Core Support B-N-3 VT-3 Assembly Lower Seismic Belleville Washers Core Support B-N-3 VT-1 VT-1 measurement of Assembly the lower core plate height relative to the core support block Upper Seismic Belleville Retaining Nut Core Support B-N-3 VT-3 Assembly Tier 2 5.2-40 Draft Revision 2

NuScale Final Safety Analysis Report Integrity of Reactor Coolant Boundary Table 5.2-7: Reactor Vessel Internals Inspection Elements (Continued)

Description Location Examination Examination Notes Category Method Lower Seismic Retaining Pin Core Support B-N-3 VT-3 Assembly Internal Structures CRA Cards Lower Riser N/A VT-3 Assembly ICI Guide Tubes Lower Riser N/A VT-3 Assembly ICI Guide Tubes (Upper) Upper Riser N/A VT-3 Assembly ICI Guide Tubes Bottom Flag Lower Riser N/A VT-1 Required VT-3 Assembly augmented to VT-1 CVCS Makeup Piping Assembly Upper Riser N/A VT-3 Assembly Upper CRDS Support Upper Riser N/A VT-3 Assembly Upper Hanger Assembly Fasteners Upper Riser N/A VT-3 Assembly Upper Hanger Ring & Reinforcements Upper Riser N/A VT-3 Assembly Lower Riser Section Lower Riser B-N-1N/A VT-3 Assembly Lower Riser Trunnion Lower Riser B-N-1N/A VT-3 Assembly Lower Riser Spacer Lower Riser B-N-1N/A VT-3 Assembly Lower Riser Spacer to Lower Riser Section Lower Riser B-N-1N/A VT-3 Assembly Lower Riser Transition to Lower Riser Lower Riser B-N-1N/A VT-3 Spacer Assembly ICIGT Support to Lower Riser Transition Lower Riser B-N-1N/A VT-3 Assembly ICIGT Support to ICIGT Lower Riser B-N-1N/A VT-3 Assembly ICIGT Bottom Flag to ICIGT Lower Riser B-N-1N/A VT-3 Assembly CRA Guide Tube Support Plate to Lower Lower Riser B-N-1N/A VT-3 Riser Spacer Assembly CRA Lower Flange to CRA Guide Tube Lower Riser B-N-1 VT-3 Assembly CRA Card to CRA Guide Tube Lower Riser B-N-1 VT-3 Assembly CRDS Alignment ConeCRA Guide Tube Lower Riser B-N-1N/A VT-3 Assembly (including Guide Cards) Assembly Upper Riser Section Seam Upper Riser B-N-1N/A VT-3 Assembly Lateral Support Pad Upper Riser B-N-1N/A VT-3 Assembly Riser Backing Strip A Upper Riser B-N-1N/A VT-3 Assembly Tier 2 5.2-41 Draft Revision 2

NuScale Final Safety Analysis Report Integrity of Reactor Coolant Boundary Table 5.2-7: Reactor Vessel Internals Inspection Elements (Continued)

Description Location Examination Examination Notes Category Method Riser Backing Strip B Upper Riser B-N-1N/A VT-3 Assembly Upper CRDS Support Upper Riser B-N-1N/A VT-3 Assembly Brace to Upper Riser Hanger Ring Upper Riser B-N-1N/A VT-3 Assembly Brace to Upper Riser Section Upper Riser B-N-1N/A VT-3 Assembly Upper Riser to Bellows Upper Riser B-N-1N/A VT-3 Assembly Bellows to Upper Riser Transition Upper Riser B-N-1N/A VT-3 Assembly Pipe to Bellows Upper Riser B-N-1N/A VT-3 Assembly Elbow to Flexible Pipe Upper Riser B-N-1N/A VT-3 Assembly Flexible Pipe to Rigid Pipe Upper Riser B-N-1N/A VT-3 Assembly Brace to Pipe Upper Riser B-N-1N/A VT-3 Assembly Pipe to Cap Upper Riser B-N-1N/A VT-3 Assembly ICI Centering Plate 1-12 Upper Riser B-N-1N/A VT-3 Assembly ICIGT Link to Upper Riser Hanger Ring Upper Riser B-N-1N/A VT-3 Assembly Injection to RPV11 Upper Riser B-N-1N/A VT-3 ICIGT to Integrated Steam Plenum PZR B-N-1N/A VT-3 Pressurizer Spray Nozzle PZR Spray Nozzle to B-N-1N/A VT-3 Safe End (RPV14-RPV15)

Surveillance Capsule Core Support B-N-1N/A VT-3 Assembly Steam Generator Col 01-21 Tube Support Top/Bottom SG N/A General Visual Augmented exam.

Sections to Tube Support middle Section Examine where accessible.

Col 01-21 Outer Spacer to Tube Support SG N/A General Visual Augmented exam.

Examine where accessible.

Col 01-21 Middle Spacer to Tube Support SG N/A General Visual Augmented exam.

Examine where accessible.

Tier 2 5.2-42 Draft Revision 2