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| | number = ML18086B789 | | | number = ML18086B789 |
| | issue date = 03/27/2018 | | | issue date = 03/27/2018 |
| | title = 2018/03/27 Nuscale SMR TR RAIs - Request for Additional Information Letter No. 9417 (Erai No. 9417) Topical Report, Thermal Hydraulic Stability, 15.09, Srsb | | | title = SMR TR RAIs - Request for Additional Information Letter No. 9417 (Erai No. 9417) Topical Report, Thermal Hydraulic Stability, 15.09, Srsb |
| | author name = | | | author name = |
| | author affiliation = NRC | | | author affiliation = NRC |
SMR TR RAIs - Request for Additional Information Letter No. 9417 (Erai No. 9417) Topical Report, Thermal Hydraulic Stability, 15.09, SrsbML18086B789 |
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PROJ0769 |
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03/27/2018 |
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NRC |
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Download: ML18086B789 (3) |
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Category:E-Mail
MONTHYEARML21361A2402022-01-0404 January 2022 Email Transmitting NRC Form 869 ML21361A1682021-12-29029 December 2021 Email Transmiting NRC 896 ML21361A1842021-12-27027 December 2021 Email Transmitting NRC Form 896 ML21116A1102021-04-26026 April 2021 SMR TR RAIs - FW: Request for Additional Information No.9828 (Erai No. 9828) ML21116A1572021-04-26026 April 2021 SMR TR RAIs - Request for Additional Information No. 9830 (Erai No. 9830) ML21117A3762021-04-22022 April 2021 SMR TR RAIs - Request for Additional Information No.9828 (Erai No. 9828) ML19178A4052019-06-27027 June 2019 SMR TR RAIs - Request for Additional Information Letter No. 9690 (Erai No. 9690) Topical Report, Design-Specific Methodology for Determining Appropriate Accidents to Be Evaluated Topical Report, 1.05, Rgrb ML19107A4982019-04-17017 April 2019 SMR TR RAIs - Request for Additional Information Letter No. 9676 (Erai No. 9676) Topical Report, Seismic System Analysis (SEB) ML19087A2862019-03-28028 March 2019 SMR TR RAIs - Request for Additional Information Letter No. 9666 (Erai No. 9666) Topical Report, Design-Specific Methodology for Determining Appropriate Accidents to Be Evaluated 1.05, SPRA ML19014A0912019-01-14014 January 2019 SMR TR RAIs - Request for Additional Information Letter No. 9648 (Erai No. 9648) Topical Report, Thermal Hydraulics 15.06.05, Srsb ML19011A0062019-01-11011 January 2019 SMR TR RAIs - Request for Additional Information Letter No. 9646 (Erai No. 9646) Topical Report, Thermal Hydraulics 1.05, SPRA ML18304A2372018-10-31031 October 2018 SMR TR RAIs - Request for Additional Information Letter No. 9580 (Erai No. 9580) Topical Report, Thermal Hydraulics 15.09, Srsb ML18295A6602018-10-22022 October 2018 SMR TR RAIs - Request for Additional Information Letter No. 9624 (Erai No. 9624) Topical Report Thermal Hydraulic Stability 15.9, Srsb ML18292A5812018-10-19019 October 2018 SMR TR RAIs - Request for Additional Information Letter No. 9578 (Erai No. 9578) Topical Report Thermal Hydraulic Stability 15.9, Srsb ML18292A5822018-10-19019 October 2018 SMR TR RAIs - Request for Additional Information Letter No. 9579 (Erai No. 9579) Topical Report Thermal Hydraulic Stability 15.9, Srsb ML18226A3282018-08-14014 August 2018 SMR TR RAIs - Request for Additional Information Letter No. 9575 (Erai No. 9575) Topical Report Thermal Hydraulic Stability 15.9, Srsb ML18226A3292018-08-14014 August 2018 SMR TR RAIs - Request for Additional Information Letter No. 9576 (Erai No. 9576) Topical Report Thermal Hydraulic Stability 15.9, Srsb ML18199A1932018-07-18018 July 2018 SMR TR RAIs - Request for Additional Information Letter No. 9492 (Erai No. 9492) Topical Report LOCA 15.6.5, Srsb ML18171A3292018-06-20020 June 2018 SMR TR RAIs - Request for Additional Information Letter No. 9351 (Erai No. 9351) Transient Analysis, 15, Srsb ML18171A3272018-06-20020 June 2018 SMR TR RAIs - Request for Additional Information Letter No. 9158 (Erai No. 9158) Topical Report, Transient and Accident Analysis, 15.00.02, Srsb ML18169A4212018-06-18018 June 2018 SMR TR RAIs - Request for Additional Information Letter No. 9444 (Erai No. 9444) Topical Report Thermal Hydraulic, 15.9, Srsb R1 ML18156A1772018-06-0505 June 2018 SMR TR RAIs - Request for Additional Information Letter No. 9351 (Erai No. 9351) Transient Analysis Methodology, 15, Srsb ML18156A1712018-06-0505 June 2018 SMR TR RAIs - Request for Additional Information Letter No. 9158 (Erai No. 9158) Topical Report, Non-LOCA Analysis Methodology, 15.00.02, Srsb ML18148A0032018-05-28028 May 2018 SMR TR RAIs - Request for Additional Information Letter No. 9475 (Erai No. 9475) Topical Report, LOCA, 15.6.5, Srsb ML18148A0022018-05-28028 May 2018 SMR TR RAIs - Request for Additional Information Letter No. 8930 (Erai No. 8930) Topical Report, Transient and Accident Analysis, 15, Srsb ML18129A4072018-05-0909 May 2018 SMR TR RAIs - Request for Additional Information Letter No. 9374 (Erai No. 9374) Topical Report, Non-LOCA Analysis Methodology, 15.00.02, Srsb ML18128A3432018-05-0808 May 2018 SMR TR RAIs - Request for Additional Information Letter No. 9085 (Erai No. 9085) Topical Report, LOCA, 15.06.05, Srsb ML18128A3892018-05-0808 May 2018 SMR TR RAIs - Request for Additional Information Letter No. 9513 (Erai No. 9513) Topical Report, Non-LOCA Analysis Methodology, 15.00.02, Srsb ML18128A3882018-05-0808 May 2018 SMR TR RAIs - Request for Additional Information Letter No. 9476 (Erai No. 9476) Topical Report, LOCA, 15.06.05, Srsb ML18128A3412018-05-0808 May 2018 SMR TR RAIs - Request for Additional Information Letter No. 9466 (Erai No. 9466) Topical Report, Non-LOCA Analysis Methodology, 15.00.02, Srsb ML18094A9802018-04-0404 April 2018 SMR TR RAIs - Request for Additional Information Letter No. 9306 (Erai No. 9306) Topical Report, Rod Ejection Accident Methodology, 15.04.08, Srsb ML18094A9662018-04-0303 April 2018 SMR TR RAIs - Request for Additional Information Letter No. 9441 (Erai No. 9441) Topical Report, Thermal Hydraulic Stability, 15.09, Srsb ML18090A0112018-03-31031 March 2018 SMR TR RAIs - Request for Additional Information Letter No. 9438 (Erai No. 9438) Topical Report, Thermal Hydraulic Stability, 15.09, Srsb ML18090A0122018-03-31031 March 2018 SMR TR RAIs - Request for Additional Information Letter No. 9439 (Erai No. 9439) Topical Report, Thermal Hydraulic Stability, 15.09, Srsb ML18086B7892018-03-27027 March 2018 SMR TR RAIs - Request for Additional Information Letter No. 9417 (Erai No. 9417) Topical Report, Thermal Hydraulic Stability, 15.09, Srsb ML18079A4592018-03-20020 March 2018 SMR TR RAIs - Request for Additional Information Letter No. 9443 (Erai No. 9443) Topical Report, Thermal Hydraulic Stability, 15.09, Srsb ML18078B3162018-03-19019 March 2018 SMR TR RAIs - Request for Additional Information Letter No. 9440 (Erai No. 9440) Topical Report Thermal Hydraulic Stability, 15.09, Srsb ML18054A2802018-02-23023 February 2018 SMR TR RAIs - Request for Additional Information Letter No. 9388 (Erai No. 9388) Topical Report TR-0516-49417-P (Stability Analysis) ML18039A0122018-02-0808 February 2018 SMR TR RAIs - Request for Additional Information Letter No. 9173 (Erai No. 9173) Topical Report Thermal Hydraulic ML18038B0602018-02-0707 February 2018 SMR TR RAIs - Request for Additional Information Letter No. 9173 (Erai No. 9173) Topical Report Thermal Hydraulic ML18038B4712018-02-0707 February 2018 SMR TR RAIs - Request for Additional Information Letter No. 9173 (Erai No. 9173) Topical Report Thermal Hydraulic ML18033B7432018-02-0202 February 2018 SMR TR RAIs - Request for Additional Information Letter No. 9333 (Erai No. 9333) Topical Report Thermal Hydraulic ML18028A0112018-01-28028 January 2018 SMR TR RAIs - Request for Additional Information Letter No. 9190 (Erai No. 9190) Topical Report LOCA ML17252A6882017-09-0909 September 2017 SMR TR RAIs - Request for Additional Information Letter No. 9086 (Erai No. 9086) Topical Report Thermal Hydraulic Design 2022-01-04
[Table view] |
Text
NuScaleTRRaisPEm Resource From: Chowdhury, Prosanta Sent: Tuesday, March 27, 2018 10:29 PM To: Request for Additional Information Cc: Lee, Samuel; Cranston, Gregory; Karas, Rebecca; Skarda, Raymond; Bavol, Bruce; NuScaleTRRaisPEm Resource
Subject:
Request for Additional Information Letter No. 9417 (eRAI No. 9417) Topical Report, Thermal Hydraulic Stability, 15.09, SRSB Attachments: Request for Additional Information No. 9417 (eRAI No. 9417).pdf Attached please find NRC staffs request for additional information (RAI) concerning review of the NuScale Topical Report.
The NRC staff recognizes that NuScale has preliminarily identified that the response to one or more questions in this RAI is likely to require greater than 60 days. NuScale is expected to provide a schedule for the RAI response by email within 14 days.
If you have any questions, please contact me.
Thank you.
Prosanta Chowdhury, Project Manager Licensing Branch 1 (NuScale)
Division of New Reactor Licensing Office of New Reactors U.S. Nuclear Regulatory Commission 301-415-164 1
Hearing Identifier: NuScale_SMR_DC_TR_Public Email Number: 77 Mail Envelope Properties (BN7PR09MB2609CD30638AF3D08767DF919EA30)
Subject:
Request for Additional Information Letter No. 9417 (eRAI No. 9417) Topical Report, Thermal Hydraulic Stability, 15.09, SRSB Sent Date: 3/27/2018 10:28:36 PM Received Date: 3/27/2018 10:28:41 PM From: Chowdhury, Prosanta Created By: Prosanta.Chowdhury@nrc.gov Recipients:
"Lee, Samuel" <Samuel.Lee@nrc.gov>
Tracking Status: None "Cranston, Gregory" <Gregory.Cranston@nrc.gov>
Tracking Status: None "Karas, Rebecca" <Rebecca.Karas@nrc.gov>
Tracking Status: None "Skarda, Raymond" <Raymond.Skarda@nrc.gov>
Tracking Status: None "Bavol, Bruce" <Bruce.Bavol@nrc.gov>
Tracking Status: None "NuScaleTRRaisPEm Resource" <NuScaleTRRaisPEm.Resource@nrc.gov>
Tracking Status: None "Request for Additional Information" <RAI@nuscalepower.com>
Tracking Status: None Post Office: BN7PR09MB2609.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 650 3/27/2018 10:28:41 PM Request for Additional Information No. 9417 (eRAI No. 9417).pdf 88058 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:
Recipients Received:
Request for Additional Information No. 9417 (eRAI No. 9417)
Issue Date: 03/28/2018 Application
Title:
NuScale Topical Report Operating Company: NuScale Docket No. PROJ0769 Review Section: 15.09 - A.DSRS NuScale Thermal Hydraulic Stability Application Section:
QUESTIONS 15.09-4 Title 10 Code of Federal Regulations (10 CFR), Part 50, Appendix A, General Design Criterion (GDC), Reactor design, requires that the reactor core and associated coolant, control, and protection systems shall be designed with appropriate margin to assure that specified acceptable fuel design limits (SAFDLs) are not exceeded during any condition of normal operation, including the effects of anticipated operational occurrences (AOOs). Title 10 CFR, Part 50, Appendix A, GDC 12, Suppression of Reactor Power Oscillations, requires that the reactor core and associated coolant, control, and protection system shall be designed to assure that power oscillation which can result in conditions exceeding SAFDLs are not possible or can be reliably and readily detected and suppressed. Title 10 CFR Part 52.47, Contents of applications; technical information, Standard Review Plan (SRP) Section 15.0.2, Review of Transient and Accident Analysis Method, and Regulatory Guide (RG) 1.203, Transient and Accident Methods, provide guidance for complying with GDCs 10 and 12. Standard Review Plan 15.0.2 and RG 1.203 state that documentation must include a complete description of the code assessment, including showing a model nodalization diagram and all code options used for the calculations.
Assessments must also compare code predictions to analytical solutions, where possible, to show the accuracy of the numerical methods in the mathematical models. RG 1.203 states that numerical solution convergence studies, including the basis for the time steps used and the chosen convergence criteria should be provided.
The staff reviewed the response to the original RAI, RAI 8801, and found that the response was insufficient for the staff to reach a conclusion regarding the adequacy of the stability analysis methodology. The following supplemental information is therefore requested:
x Provide a summary of numerical results of the sensitivity studies described in the original response.
x Quantify the impact on the decay ratio for the different nodalization and time step cases analyzed. It is acceptable to respond to this request by providing the results as a table that in one column describes the nodalization, in a second column provides the time step, in a third column provides the Courant number, and in a fourth column provides the decay ratio.
x Compare the sensitivity of the results to nodalization/time-step to the uncertainty in the decay ratio.