NRC-18-0014, Response to Request for Additional Information Regarding Relief Request No. RR-A37, Revision 1, for the Inservice Inspection Program Third 10-Year Interval

Response to Request for Additional Information Regarding Relief Request No. RR-A37, Revision 1, for the Inservice Inspection Program Third 10-Year Interval

ML18037A511
Person / Time
Site:	Fermi
Issue date:	02/06/2018
From:	Polson K DTE Energy
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NRC-18-0014
Download: ML18037A511 (6)

Text

Keith J. Polson Senior Vice President and CNO DTE Energy Company 6400 N. Dixie Highway, Newport, MI 48166 Tel: 734.586.6515 Fax: 734.586.4172 Email: keith.polson@dteenergy.com DTE Energy-February 6, 2018 NRC-18-0014 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555-0001 Fermi 2 Power Plant NRC Docket No. 50-341 NRC License No. NPF-43

Subject:

Response to Request for Additional Information Regarding Relief Request No. RR-A37, Revision 1, for the Inservice Inspection Program Third 10-Year Interval

References:

1) DTE Electric Letter to NRC, "Submittal of Revised Relief Request No. RR-A37, Revision 1, for the Inservice Inspection Program Third 10-Year Interval," NRC-17-0062, dated September 26, 2017 (ML17270A036)

In Reference 1, DTE Electric Company (DTE) submitted Relief Request RR-A37, Revision 1, for the third 10-year interval of the Fermi 2 Inservice Inspection (ISI)

Program. In an email from Ms. Sujata Goetz to Mr. Jason Haas dated January 19, 2018, the NRC sent DTE a request for additional information (RAI) regarding this relief request. The response to the RAI is enclosed.

No new commitments are being made in this submittal.

Should you have any questions or require additional information, please contact Mr. Scott A. Maglio, Manager - Nuclear Licensing, at (734) 586-5076.

Sincerely, Keith J. Polson Senior Vice President and CNO

USNRC NRC-18-0014 Page 2

Enclosure:

Response to Request for Additional Information cc: NRC Project Manager NRC Resident Office Reactor Projects Chief, Branch 5, Region III Regional Administrator, Region III Michigan Public Service Commission Regulated Energy Division (kindschl@michigan.gov)

Enclosure to NRC-18-0014 Fermi 2 NRC Docket No. 50-341 Operating License No. NPF-43 Response to Request for Additional Information

Enclosure to NRC-18-0014 Page 1 Response to Request for Additional Information

RAI-1

Electric Power Research Institute, Technical Report 1003557, BWRVIP [Boiling Water reactor Vessel and Internal Project] -108, Technical Basis for the Reduction of Inspection Requirements for the Boiling Water Reactor Nozzle-to-Vessel Shell Welds and Nozzle Inner Radii and Topical Report BWRVIP-241, Probabilistic Fracture Mechanics [PFM] Evaluation for the Boiling Water Reactor Nozzle-to-Vessel Shell Welds and Nozzle Blend Radii contain PFM analysis results supporting Code Case N-702. BWRVIP-241 contains additional PFM results supporting revision of the evaluation criteria under Conditions and Limitations in the safety evaluation (SE) for BWRVIP 108. Section 3 of BWRVIP-108 states that CRD nozzles are eliminated from consideration since they are not full penetration welds. The staffs SE for BWRVIP-108, dated December 19, 2007 (ADAMS Accession No. ML073600374) states the report considered nozzles which are joined with full penetration welds and as a result, the CRD nozzles, which use partial penetration welds, are outside the scope of the report. Furthermore, ASME Code Case N-702 states, in part, that it excludes the control rod drive return line nozzles.

In Attachment 2 of the licensees letter dated September 26, 2017, in the table Applicable Components, the licensee included the N10 nozzle, ID# 15 315 IRS, CRD Nozzle Inside Radius Section and N10 Nozzle, ID# 15-315, CRD Nozzle-to-Vessel Weld in its list of components affected. Based on the staffs review of the licensees application, the inclusion of the N10 nozzle from the CRD System is inconsistent with ASME Code Case N-702, BWRVIP 108 and BWRVIP-241 criteria. In order to expand the scope of BWRVIP-108 and BWRVIP-241 to include the CRD nozzles in the submittal, the licensee would need [to] submit an analysis similar to the one provided in BWRVIP-108 and considers all stresses, including the reduced thermal fatigue stresses and use assumptions relevant to the CRD nozzles.

Please justify the inclusion of the N10 nozzle from the CRD System in this Relief Request for the use of the proposed alternative in Code Case N-702. Alternatively, remove N10 nozzle from the list of applicable components from your application.

RESPONSE

DTE Electric Company is hereby withdrawing the request to include the N10 (CRD) nozzle in Relief Request RR-A37. Attachment 1 provides an updated list of applicable components.

Enclosure to NRC-18-0014 Page 2 Attachment 1 RR-A37 - Applicable Components Code Item Nozzle Category Number Identification Description System Isometric N3 B-D B3.100 8-316A IRS Nozzle Inside Radius Section Main Steam 5361-5 N3 B-D B3.100 8-316B IRS Nozzle Inside Radius Section Main Steam 5361-5 N3 B-D B3.100 8-316C IRS Nozzle Inside Radius Section Main Steam 5361-5 N3 B-D B3.100 8-316D IRS Nozzle Inside Radius Section Main Steam 5361-5 N5 B-D B3.100 14-316A IRS Nozzle Inside Radius Section Core Spray 5361-5 N5 B-D B3.100 14-316B IRS Nozzle Inside Radius Section Core Spray 5361-5 Reactor Recirc N1 B-D B3.100 5-314A IRS Nozzle Inside Radius Section Suction 5361-5 Reactor Recirc N1 B-D B3.100 5-314B IRS Nozzle Inside Radius Section Suction 5361-5 N2 B-D B3.100 13-314A IRS Nozzle Inside Radius Section Reactor Recirc Inlet 5361-5 N2 B-D B3.100 13-314B IRS Nozzle Inside Radius Section Reactor Recirc Inlet 5361-5 N2 B-D B3.100 13-314C IRS Nozzle Inside Radius Section Reactor Recirc Inlet 5361-5 N2 B-D B3.100 13-314D IRS Nozzle Inside Radius Section Reactor Recirc Inlet 5361-5 N2 B-D B3.100 13-314E IRS Nozzle Inside Radius Section Reactor Recirc Inlet 5361-5 N2 B-D B3.100 13-314F IRS Nozzle Inside Radius Section Reactor Recirc Inlet 5361-5 N2 B-D B3.100 13-314G IRS Nozzle Inside Radius Section Reactor Recirc Inlet 5361-5 N2 B-D B3.100 13-314H IRS Nozzle Inside Radius Section Reactor Recirc Inlet 5361-5 N2 B-D B3.100 13-314J IRS Nozzle Inside Radius Section Reactor Recirc Inlet 5361-5 N2 B-D B3.100 13-314K IRS Nozzle Inside Radius Section Reactor Recirc Inlet 5361-5 Jet Pump N8 B-D B3.100 19-314A IRS Nozzle Inside Radius Section Instrument 5361-5 Jet Pump N8 B-D B3.100 19-314B IRS Nozzle Inside Radius Section Instrument 5361-5 N7 B-D B3.100 2-318 IRS Nozzle Inside Radius Section RPV Head Vent 5361-5 N6 B-D B3.100 4-318A IRS Nozzle Inside Radius Section RPV Head Spare 5361-5 N6 B-D B3.100 4-318B IRS Nozzle Inside Radius Section RPV Head Spare 5361-5 N3 B-D B3.90 8-316A M.S. Nozzle-to-Vessel Weld Main Steam 5361-5 N3 B-D B3.90 8-316B M.S. Nozzle-to-Vessel Weld Main Steam 5361-5 N3 B-D B3.90 8-316C M.S. Nozzle-to-Vessel Weld Main Steam 5361-5 N3 B-D B3.90 8-316D M.S. Nozzle-to-Vessel Weld Main Steam 5361-5 N5 B-D B3.90 14-316A C.S. Nozzle-to-Vessel Weld Core Spray 5361-5 N5 B-D B3.90 14-316B C.S. Nozzle-to-Vessel Weld Core Spray 5361-5 Reactor Recirc.

N1 B-D B3.90 5-314A RRI Nozzle-to-Vessel Weld Suction 5361-5 Reactor Recirc.

N1 B-D B3.90 5-314B RRI Nozzle-to-Vessel Weld Suction 5361-5

Enclosure to NRC-18-0014 Page 3 Attachment 1 RR-A37 - Applicable Components (continued)

Code Item Nozzle Category Number Identification Description System Isometric N2 B-D B3.90 13-314A RRI Nozzle-to-Vessel Weld Reactor Recirc Inlet 5361-5 N2 B-D B3.90 13-314B RRI Nozzle-to-Vessel Weld Reactor Recirc Inlet 5361-5 N2 B-D B3.90 13-314C RRI Nozzle-to-Vessel Weld Reactor Recirc Inlet 5361-5 N2 B-D B3.90 13-314D RRI Nozzle-to-Vessel Weld Reactor Recirc Inlet 5361-5 N2 B-D B3.90 13-314E RRI Nozzle-to-Vessel Weld Reactor Recirc Inlet 5361-5 N2 B-D B3.90 13-314F RRI Nozzle-to-Vessel Weld Reactor Recirc Inlet 5361-5 N2 B-D B3.90 13-314G RRI Nozzle-to-Vessel Weld Reactor Recirc Inlet 5361-5 N2 B-D B3.90 13-314H RRI Nozzle-to-Vessel Weld Reactor Recirc Inlet 5361-5 N2 B-D B3.90 13-314J RRI Nozzle-to-Vessel Weld Reactor Recirc Inlet 5361-5 N2 B-D B3.90 13-314K RRI Nozzle-to-Vessel Weld Reactor Recirc Inlet 5361-5 Jet Pump N8 B-D B3.90 19-314A JPI Nozzle-to-Vessel Weld Instrument 5361-5 Jet Pump N8 B-D B3.90 19-314B JPI Nozzle-to-Vessel Weld Instrument 5361-5 Head/Vent Nozzle-to-Vessel N7 B-D B3.90 2-318 Weld RPV Head Vent 5361-5 Spare Nozzle-to-Vessel N6 B-D B3.90 4-318A Weld RPV Head Spare 5361-5 Spare Nozzle-to-Vessel N6 B-D B3.90 4-318B Weld RPV Head Spare 5361-5