ML18289A755
| ML18289A755 | |
| Person / Time | |
|---|---|
| Site: | NuScale |
| Issue date: | 10/16/2018 |
| From: | NRC |
| To: | NRC/NRO/DLSE/LB1 |
| References | |
| Download: ML18289A755 (4) | |
Text
1 NuScaleDCRaisPEm Resource From:
Cranston, Gregory Sent:
Tuesday, October 16, 2018 2:08 PM To:
Request for Additional Information Cc:
Lee, Samuel; Lupold, Timothy; Le, Tuan; Vera Amadiz, Marieliz; Chowdhury, Prosanta; NuScaleDCRaisPEm Resource
Subject:
Request for Additional Information No. 507 eRAI No. 9619 (3.2.2)
Attachments:
Request for Additional Information No. 507 (eRAI 9619).pdf Attached please find NRC staffs request for additional information (RAI) concerning review of the NuScale Design Certification Application.
Please submit your technically correct and complete response within 60 days of the date of this RAI to the NRC Document Control Desk.
If you have any questions, please contact me.
Thank you.
Hearing Identifier:
NuScale_SMR_DC_RAI_Public Email Number:
546 Mail Envelope Properties (BN1PR09MB0258DD099C7ACAABCC137F0790FE0)
Subject:
Request for Additional Information No. 507 eRAI No. 9619 (3.2.2)
Sent Date:
10/16/2018 2:07:48 PM Received Date:
10/16/2018 2:07:54 PM From:
Cranston, Gregory Created By:
Gregory.Cranston@nrc.gov Recipients:
"Lee, Samuel" <Samuel.Lee@nrc.gov>
Tracking Status: None "Lupold, Timothy" <Timothy.Lupold@nrc.gov>
Tracking Status: None "Le, Tuan" <Tuan.Le@nrc.gov>
Tracking Status: None "Vera Amadiz, Marieliz" <Marieliz.VeraAmadiz@nrc.gov>
Tracking Status: None "Chowdhury, Prosanta" <Prosanta.Chowdhury@nrc.gov>
Tracking Status: None "NuScaleDCRaisPEm Resource" <NuScaleDCRaisPEm.Resource@nrc.gov>
Tracking Status: None "Request for Additional Information" <RAI@nuscalepower.com>
Tracking Status: None Post Office:
BN1PR09MB0258.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 364 10/16/2018 2:07:54 PM Request for Additional Information No. 507 (eRAI 9619).pdf 105950 Options Priority:
Standard Return Notification:
No Reply Requested:
No Sensitivity:
Normal Expiration Date:
Recipients Received:
Request for Additional Information No. 507 (eRAI 9619)
Issue Date: 10/16/2018 Application
Title:
NuScale Standard Design Certification 048 Operating Company: NuScale Power, LLC Docket No.52-048 Review Section: 03.02.02 - System Quality Group Classification Application Section: Section 3.2.1 and Section 3.2.1 QUESTIONS 03.02.02-7 General Design Criterion (GDC) 1, "Quality Standards and Records"; states that SSCs important to safety being designed, fabricated, erected, and tested to quality standards commensurate with the importance of the safety function to be performed. For the NuScale Design Certification, the class break information provides the detail of the boundary of the designed SSC and piping classification; such that the design requirements of ASME Class 1, 2 and 3 component and piping, interface requirements, safety criteria and ASME Section XI inspection program are applied. The staff noted that the information in the DCD Tier 1 Figure 2.1-1 and DCD Tier 2 Figure 6.6-1 do not provide the class break information, and that the design of SSC classification are not well-defined meeting the GDC 1.
As in previously approved standard plant designs certified by 10CFR52, Tier 1 means the portion of the design-related information contained in the generic DCD that is approved and certified by the NRC. The Tier 1 information includes:
- 1. Definitions and general provisions;
- 2. Design descriptions;
- 3. Inspections, tests, analyses, and acceptance criteria (ITAACs);
- 4. Significant site parameters; and
- 5. Significant interface requirements The component/system class break information is requested to be Tier 1. This information needs to be designated as Tier 1 information to support the staff's reasonable assurance finding, and because if changed, it could affect the reliability of the containment, reactor coolant, ECCS, or other coolant systems, and NRC review of any changes will be necessary to ensure the systems will still be able to perform their design function and have not introduced new potential failure mechanism. The identification of comnponent/system class information and the locations were the classifications change, i.e. the break locations define the interface between various portions of the system and meet the above Tier 1 information
requirements. Therefore, the staff requests the applicant to include the class break information into the DCD Tier 1.