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Category:Response to Request for Additional Information (RAI)
MONTHYEARML24354A1312024-12-19019 December 2024 LLC, Response to NRC Request for Additional Information No. 032 (RAI-10297 R1) on the NuScale Standard Design Approval Application ML24354A2522024-12-19019 December 2024 Nuscale Power, LLC - Response to Request for Additional Information No. 032 (RAI-10297 Ri) on the Nuscale Standard Design Approval Application ML24353A2182024-12-18018 December 2024 LLC, Response to NRC Request for Additional Information No. 037 (RAI-10357 R1) on the NuScale Standard Design Approval Application ML24353A0292024-12-18018 December 2024 Nuscale Power LLC - Responses to NRC Request for Additional Information No. 011 (RAI-10111 Ri) on the Nuscale Standard Design Approval Application ML24353A2522024-12-18018 December 2024 LLC, Response to NRC Request for Additional Information No. 031 (RAI-10296 R1) on the NuScale Standard Design Approval Application ML24353A3332024-12-18018 December 2024 Nuscale Power, LLC - Response to NRC Request for Additional Information No. 037 (RAI-10357 Ri) on the Newscale Standard Design Approval Application ML24348A0632024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-44 ML24348A0072024-12-13013 December 2024 LLC Submittal of the NRCs Request for Docketing of Resolved Audit Responses ML24348A0522024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-36 ML24348A0272024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-23 ML24348A0872024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-68 ML24348A0432024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-30 ML24348A0812024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-59S2 ML24348A0332024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-26 ML24348A0672024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-44S ML24348A0732024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-57 ML24348A0292024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-24 ML24348A0202024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-8 ML24348A0702024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-49 ML24348A0692024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-45 ML24348A0582024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-39 ML24348A0452024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-33 ML24348A0122024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-5 ML24348A0612024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-41 ML24348A0142024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-5S ML24348A0542024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-37 ML24348A0752024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-58 ML24348A1132024-12-13013 December 2024 Nuscale Power, LLC - Response to NRC Request for Additional Information No. 037 (RAI-10357 R1) on the NuScale Standard Design Approval Application ML24348A0772024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-59 ML24348A0622024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-43 ML24348A0242024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-22 ML24327A1492024-11-22022 November 2024 LLC, Responses to NRC Request for Additional Information No. 024 (RAI-10185 R1) on the NuScale Standard Design Approval Application ML24326A1232024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16.3.5.1-4 ML24326A1112024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16.3.3.1-9 ML24326A1252024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16.3.5.1-5 ML24326A1122024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16.3.3.1-11 ML24326A3362024-11-21021 November 2024 Response to NuScale Topical Report Audit Question: A-LOCA.LTR-38 ML24326A0942024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16-9 ML24326A0962024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16-14 ML24326A0982024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16.3.0.4-1 ML24326A3452024-11-21021 November 2024 Response to NuScale Topical Report Audit Question: A-LOCA.LTR-42 ML24326A0952024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16-13 ML24326A3342024-11-21021 November 2024 Response to NuScale Topical Report Audit Question: A-LOCA.LTR-37 ML24326A1352024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16.3.6.3-2 ML24313A0662024-11-0808 November 2024 LLC - Response to NRC Request for Additional Information No. 015 (RAI-10133 R1) on the NuScale Standard Design Approval Application ML24313A1212024-11-0808 November 2024 LLC - Response to NRC Request for Additional Information No. 020 (RAI-10150 R1) on the NuScale Standard Design Approval Application ML24313A0522024-11-0808 November 2024 LLC Response to NRC Request for Additional Information No. 14 (RAI-10131 R1) on the NuScale Standard Design Approval Application ML24281A0182024-10-0707 October 2024 LLC, Response to NRC Request for Additional Information No. 017 (RAI-10135 R1) on the NuScale Standard Design Approval Application ML24281A0202024-10-0707 October 2024 LLC, Response to NRC Request for Additional Information No. 023 (RAI-10177 R1) on the NuScale Standard Design Approval Application ML24271A2822024-09-27027 September 2024 LLC - Response to NRC Request for Additional Information No.026 (RAI-10199 R1) on the NuScale Standard Design Approval Application 2024-09-27
[Table view] Category:Audit Report
MONTHYEARML24348A0632024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-44 ML24348A0202024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-8 ML24348A0072024-12-13013 December 2024 LLC Submittal of the NRCs Request for Docketing of Resolved Audit Responses ML24348A0522024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-36 ML24348A0272024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-23 ML24348A0872024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-68 ML24348A0432024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-30 ML24348A0812024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-59S2 ML24348A0332024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-26 ML24348A0672024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-44S ML24348A0732024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-57 ML24348A0292024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-24 ML24348A0702024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-49 ML24348A0452024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-33 ML24348A0692024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-45 ML24348A0582024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-39 ML24348A0122024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-5 ML24348A0622024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-43 ML24348A0242024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-22 ML24348A0612024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-41 ML24348A0142024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-5S ML24348A0542024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-37 ML24348A0752024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-58 ML24348A0772024-12-13013 December 2024 Response to NuScale Topical Report Audit Question Number A-NonLOCA.LTR-59 ML24326A1252024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16.3.5.1-5 ML24326A1112024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16.3.3.1-9 ML24326A1232024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16.3.5.1-4 ML24326A0962024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16-14 ML24326A3362024-11-21021 November 2024 Response to NuScale Topical Report Audit Question: A-LOCA.LTR-38 ML24326A0942024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16-9 ML24326A1122024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16.3.3.1-11 ML24326A0982024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16.3.0.4-1 ML24326A3452024-11-21021 November 2024 Response to NuScale Topical Report Audit Question: A-LOCA.LTR-42 ML24326A0952024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16-13 ML24326A3342024-11-21021 November 2024 Response to NuScale Topical Report Audit Question: A-LOCA.LTR-37 ML24326A1352024-11-21021 November 2024 Response to NuScale Technical Report Audit Question Number: A-16.3.6.3-2 ML24215A0752024-08-0202 August 2024 LLC, Response to Sdaa Audit Question Number A-3.11-4 ML24215A0662024-08-0202 August 2024 LLC, Response to Sdaa Audit Question Number A-3.9.2-33 ML24215A0372024-08-0202 August 2024 LLC, Response to Sdaa Audit Question Number A-3.7.2-29 ML24215A0032024-08-0202 August 2024 LLC, Response to Sdaa Audit Question Number A-3.3.1.1-1 ML24215A0762024-08-0202 August 2024 LLC, Response to Sdaa Audit Question Number A-3.11-5 ML24215A0202024-08-0202 August 2024 LLC, Response to Sdaa Audit Question Number A-3.5.3-4 ML24215A0952024-08-0202 August 2024 LLC, Response to Sdaa Audit Question Number A-4 Fluence Ter-4 ML24215A0212024-08-0202 August 2024 LLC, Response to Sdaa Audit Question Number A-3.5.3-6 ML24215A0602024-08-0202 August 2024 LLC, Response to Sdaa Audit Question Number A-3.9.2-21 ML24215A0162024-08-0202 August 2024 LLC, Response to Sdaa Audit Question Number A-3.4.2-9 ML24215A1212024-08-0202 August 2024 LLC, Response to Sdaa Audit Question Number A-5.4.1.3-1 ML24215A1102024-08-0202 August 2024 LLC, Response to Sdaa Audit Question Number A-5.3.2.4-1 ML24215A0132024-08-0202 August 2024 LLC, Response to Sdaa Audit Question Number A-3.4.2-4 ML24215A0472024-08-0202 August 2024 LLC, Response to Sdaa Audit Question Number A-3.9.2-5 2024-08-02
[Table view] |
Text
Response to NuScale Technical Report Audit Question Question Number: A-16-9 Receipt Date: 09/18/2023 Question:
TR101310-NP, Rev 0, Section 3.1.1 describes departures from the US600 generic TS Section 1.1 definitions in the US460 generic TS Section 1.1 definitions. The description under the heading PASSIVELY COOLED - PASSIVE COOLING seems to suggest that the US460 NuScale Power Module (NPM or just module) design needs more than one RVV and more than one RRV to perform the ECCS safety function for some unstated design basis events.
Suggest changing the sentence ECCSonly requires one or more RVVs and one or more RRVs to be open to perform its safety function to say ECCSonly requires one of the two RVVs and one of the two RRVs to be open to perform its safety function.
Response
Original Response:
NuScale revises the definition of PASSIVELY COOLED - PASSIVE COOLING in TR-101310 Section 3.1.1 to read:
...only requires one of the two RVVs and one of the two RRVs to be open...
NuScale revises the definition of PASSIVELY COOLED - PASSIVE COOLING in SDAA Technical Specification 1.1 to read:
- a. One of the two reactor vent valves are open and one of the two reactor recirculation valves are open, or
- b. One of the two trains of DHRS is in operation,or NuScale Nonproprietary NuScale Nonproprietary
Revised Response:
Subsequent to the posting of the original response to Audit Item A-16-9, NuScale identified concerns with the revised definition of Passively Cooled - Passive Cooling in Generic Technical Specification Section 1.1. The revised wording could lead to an incorrect application of the definition. This concern was discussed with the NRC staff on October 24, 2024 and it was agreed that the definition of Passively Cooled - Passive Cooling should be revised to return the definition to the original wording.
Audit Item A-16.1.1-4 requested that NuScale revise method b. of the definition of Passively Cooled - Passive Cooling to replace is with are. Because the definition had been previously revised to use One of the two in both method a, and b., NuScale responded that it was more appropriate to use is in method a. and b. Now that the wording of methods a. and b.are being returned to the original wording, methods a. and b. are revised to use are instead of is. This change aligns with the action requested by Audit Item A-16.1.1-4.
NuScale revises the definition of PASSIVELY COOLED - PASSIVE COOLING in Generic Technical Specification 1.1 to read:
- a. One or more reactor vent valves are open and one or more reactor recirculation valves are open, or
- b. One or more trains of DHRS are in operation,or Markups of the affected changes, as described in the response, are provided below:
NuScale Nonproprietary NuScale Nonproprietary
Definitions 1.1 NuScale US460 1.1-5 Draft Revision 2 1.1 Definitions PASSIVELY COOLED -
PASSIVE COOLING A module is in PASSIVE COOLING or is being PASSIVELY COOLED when:
- a. One or more reactor vent valves are open and one or more reactor recirculation valves are open, or
- b. One or more trains of DHRS areis in operation, or
- c. Water level in the containment vessel is > 45 ft.
PHYSICS TESTS PHYSICS TESTS shall be those tests performed to measure the fundamental nuclear characteristics of the reactor core and related instrumentation. These tests are:
- a. Described in Chapter 14, Initial Test Program and Inspections, Tests, Analyses, and Acceptance Criteria, of the FSAR;
- b. Authorized under the provisions of 10 CFR 50.59; or
- c. Otherwise approved by the Nuclear Regulatory Commission.
PRESSURE AND TEMPERATURE LIMITS REPORT (PTLR)
The PTLR is the unit-specific document that provides the reactor vessel pressure and temperature limits, including heatup and cooldown rates, for the current reactor vessel fluence period. These pressure and temperature limits shall be determined for each fluence period in accordance with Specification 5.6.4.
RATED THERMAL POWER (RTP)
RTP shall be a total reactor core heat transfer rate to the reactor coolant of 250 MWt.