HNP-07-145, Inservice Inspection Relief Request 1, Summary of Ultrasonic Examinations of Preemptive Weld Overlays for Pressurizer Nozzle Locations Containing Alloy 600 Materials
| ML073030491 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 10/22/2007 |
| From: | Duncan R Progress Energy Carolinas |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| HNP-07-145 | |
| Download: ML073030491 (9) | |
Text
Progress Energy Robert J. Duncan, II Vice President Harris Nuclear Plant Progress Energy Carolinas, Inc.
Serial: HNP-07-145 10 CFR 50.55a OCT 2 2 2007 U.S. Nuclear Regulatory Commission ATTENTION: Document Control Desk Washington, DC 20555 SHEARON HARRIS NUCLEAR POWER PLANT, UNIT NO. 1 DOCKET NO. 50-400/LICENSE NO. NPF-63 INSERVICE INSPECTION RELIEF REQUEST J
SUMMARY
OF ULTRASONIC EXAMINATIONS OF PREEMPTIVE WELD OVERLAYS FOR PRESSURIZER NOZZLE LOCATIONS CONTAINING ALLOY 600 MATERIALS
References:
- 1. Letter from R. J. Duncan, II to the Nuclear Regulatory Commission (Serial: HNP-07-041), "Inservice Inspection Relief Request 1 Proposed Alternative to ASME Code Requirements for Weld Overlay Repairs,"
dated May 14, 2007
- 2. Letter from T. J. Natale to the Nuclear Regulatory Commission (Serial: HNP-07-100), "Response to the Request for Additional Information on the Inservice Inspection Relief Request 1 Proposed Alternative to ASME Code Requirements for Weld Overlay Repairs," dated July 19, 2007
- 3. Letter from Thomas H. Boyce, Nuclear Regulatory Commission to Robert J. Duncan, II, "Inservice Inspection Relief Request No. 1 Regarding Proposed Alternative to the American Society of Mechanical Engineers Boiler and Pressure Vessel Code Requirements for Pressurizer Nozzle Weld Overlay Repairs (TAC No. MD5535)," dated October 10, 2007 Ladies and Gentlemen:
On May 14, 2007, Carolina Power and Light Company, doing business as Progress Energy Carolinas, Inc., submitted a letter to the Nuclear Regulatory Commission (NRC) requesting relief from the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code,Section XI, "Rules for Inservice Inspection of Nuclear Power Plant Components," Article IWA-4000, "Repair/Replacement Activities" (Reference 1).
The proposed alternative, based on ASME Code Case N-740, was requested to support Harris Nuclear Plant's installation of full structural weld overlays on dissimilar metal welds of pressurizer nozzles during Refueling Outage 14. This request was approved by the NRC on October 10, 2007 (Reference 3).
In that request, Progress Energy Carolinas, Inc. committed to submit to the NRC the following information regarding the final ultrasonic examinations of the completed weld overlays:
P.O.
Box 165 New Hill, NC 27562 T> 919.362.2502 F> 919.362.2095
Serial No. HNP-07-145 Page 2 Weld overlay examination results including a listing of indications detected Disposition of all indications using the standards of ASME Section XI, IWB-3514-2 and/or IWB-3514-3 criteria and, if possible, the type and nature of the indications A discussion of any repairs to the weld overlay material and/or base metal and the reason for the repairs This information was to be provided within fourteen (14) days from completing the final ultrasonic examinations on the completed weld overlays.
The final ultrasonic examination of the weld overlays was completed on October 13, 2007. No indications requiring disposition were found and no repairs to the weld overlay material and/or base metal were performed. The Attachment to this letter contains the required report on the final ultrasonic examination, fulfilling commitment number 1 of the May 14, 2007, letter (Reference 1).
This document contains no new regulatory commitment.
Please refer any questions regarding this submittal to Mr. Dave Corlett at (919) 362-3137.
Sincerely, R. J. D'tr6can, II Vice President Harris Nuclear Plant RJD/kms
Attachment:
Summary of Ultrasonic Examinations of Preemptive Weld Overlays for Pressurizer Nozzle Locations Containing Alloy 600 Materials, as provided by Structural Integrity Associates, Inc.
cc:
Mr. P. B. O'Bryan, NRC Sr. Resident Inspector Ms. B. 0. Hall, N.C. DENR Section Chief Ms. M. G. Vaaler, NRC Project Manager Dr. W. D. Travers, NRC Regional Administrator
Serial: HNP-07-145 ATTACHMENT HARRIS NUCLEAR PLANT (HNP)
INSERVICE INSPECTION RELIEF REQUEST 1
SUMMARY
OF ULTRASONIC EXAMINATIONS OF PREEMPTIVE WELD OVERLAYS FOR PRESSURIZER NOZZLE LOCATIONS CONTAINING ALLOY 600 MATERIALS (7 Pages)
Structural Integrity Associates, Inc.
3315 Almaden Expressway Suite 24 San Jose, CA 95118-1557 Phone:
408-978-8200 Fax: 408-978-8964 www.structnt.com rmcdonald@structint.com October 14, 2007 SIR-07-310-NPS, Rev. 0 Mr. Joe Davis Progress Energy Harris Nuclear Plant 5413 Shearon Harris Road New Hill, NC 27562
Subject:
Summary of Weld Overlay Ultrasonic Inspections for Pressurizer Surge, Spray and Safety/Relief Nozzle-to-Safe End Welds at Shearon Harris Nuclear Plant, Unit 1
Reference:
Progress Energy, Shearon Harris Nuclear Plant, Unit 1, Propose Alternative to ASME Code Requirements for Weld Overlay Repairs, HNP-07-041, May 14, 2007
Dear Mr. Davis:
The following attachment is transmitted in support of Progress Energy's response to commitments in the above-referenced request for alternative:
Attachment:
HNP will submit the following information to the NRC within fourteen (14) days from completing the final ultrasonic examinations of the completed weld overlays:
Weld overlay examination results including a listing of indications detected.
" Disposition of all indications using the standards of ASME Section XI, IWB-3514-2 and/or IWB-3514-3 criteria and, if possible, the type and nature of the weld indications.
" A discussion of any repairs to the weld overlay material and/or base metal and the reason for the repairs.
Austin, TX Centennial, CO Charlotte, NC Stonington, CT
. Silver Spring, MD Sunrise, FL Uniontown, OH Whittier, CA Toronto, Canada 512-533-9191 303-792-0077 704-597-5554 860-536-3982 301445-8200 954-572-2902 330-899-9753 562-944-8210 905-829-9817
Mr. Joe Davis SIR-07-31 0-NPS Rev. 0 October 14, 2007 Page.2 of 2 If you have any questions or comments regarding this summary, please contact one of the undersigned-Prepared by:
Randall K. McDonald Senior Consultant, NDE Level 11.
Verified by:
(of 467 0/0 Date l E u
Date Senior Asso**"
Approved by:
Snes Axline, P.E.
--r Se ior Consultant ml Attachments Date q0 c7 cc: D. Saccavino L. Nguyen Project File: HNP-.02Q r
Structural lte t, Associates, Inc.
Attachment Summary of Ultrasonic Examinations of Preemptive Weld Overlays for Pressurizer Nozzle Locations Containing Alloy 600 Materials Attachment to SIR-07-3 10, Rev. 0 1 of 4
Ultrasonic Examination Procedure SI-UT-126, Revision 0 and Revision 3, Procedure for the Phased Array Ultrasonic Examination of Weld Overlaid Similar and Dissimilar Metal Welds, was used during the examinations. This procedure, and the examiners who applied the procedure, are qualified through the PDI Program at the EPRI NDE Center.
Relief Nozzle Weld Overlay Examination Component Identification:
N/SE Weld: II-PZR-O1NSEW-20 SE/P Weld: 1-RC-FW-456 Examination Date: October 11, 2007 Examination Time: 18:11 to 19:00 Examination Regions: Weld Overlay Material, Outer 25% Dissimilar Metal.Weld & Adjacent Base Material and Outer 25% Safe End-to-Pipe Weld & Adjacent Base Material Examination Coverage: 100% coverage of the Code-required volume was achieved during the examinations.
Axial Examination Angles: 00 through 830 (in 10 Increments) - Circumferential Examination Angles: 0' through 650 (in 1 Increments)
Examination Summary: No suspected flaw indications were observed during the examinations.
The examination gain was adjusted to maintain the procedure-specified baseline noise level from 5% to 20% of full screen height. The lower range of examination angles detected responses from the inside surface of the component which were useful for monitoring search unit contact /
coupling effectiveness during the examination.
Safety Nozzle A Weld Overlay Examination Component Identification:
N/SE Weld: 1I-PZR-0INSEW-17 SE/P Weld: 1-RC-FW-330 Examination Date: October 11, 2007 Examination Time: 15:45 to 18:00 Examination Regions: Weld Overlay Material, Outer 25% Dissimilar Metal Weld & Adjacent Base Material and Outer 25% Safe End-to-Pipe Weld & Adjacent BaseMaterial Examination Coverage: 100% coverage of the Code-required volume was achieved during the examinations.
Axial Examination Angles: 00 through 830 (in 10 Increments) - Circumferential Examination Angles: 00 through 650 (in 10 Increments)
Examination Summary: No suspected flaw indications were observed during the examinations.
The examination gain was adjusted to maintain the procedure-specified baseline noise level from 5% to 20% of full screen height. The lower range of examination angles detected responses Attachment to SIR-07-3 10, Rev. 0 2 of 4 Structural Integrity Associates, Inc.
from the inside surface of the component which were useful for monitoring search unit contact /
coupling effectiveness during the examination.
Safety Nozzle B Weld Overlay Examination Component Identification:
N/SE Weld: II-PZR-01NSEW-18 SE/P Weld: 1-RC-FW-334 Examination Date: October 11, 2007 Examination Time: 15:45 to 18:00 Examination Regions: Weld Overlay Material, Outer 25% Dissimilar Metal Weld & Adjacent Base Material and Outer 25% Safe End-to-Pipe Weld & Adjacent Base Material Examination Coverage: 100% coverage of the Code-required volume was achieved during the examinations.
Axial Examination Angles: 00 through 83' (in 10 Increments):- Circumferential Examination Angles: 0' through 650 (in 1P Increments)
Examination Summary: No suspected flaw indications were observed during the examinations.
The examination gain was adjusted to maintain the procedure-specified baseline noise level from 5% to 20% of full screen height. The lower range of examination angles detected responses from the inside surface of the component which were useful for monitoring search unit contact /
coupling effectiveness during the examination.
Safety Nozzle C Weld Overlay Examination Component Identification:
N/SE Weld: II-PZR-01NSEW-19 SE/P Weld: 1-RC-FW-329 Examination Date: October 12, 2007 Examination Time: 16:09 to 17:16 Examination Regions: Weld Overlay Material, Outer 25% Dissimilar Metal Weld & Adjacent Base Material and Outer 25% Safe End-to-Pipe Weld & Adjacent Base Material Examination Coverage: 100% coverage of the Code-required volume was achieved during the examinations.
Axial Examination Angles: 0' through 83' (in 10 Increments) - Circumferential Examination Angles: 0' through 65' (in 10 Increments)
Examination Summary: No suspected flaw indications were observed during the examinations.
The examination gain was adjusted to maintain the procedure-specified baseline noise level from 5% to 20% of full screen height. The lower range of examination angles detected responses from the inside surface of the component which were useful for monitoring search unit contact /
coupling effectiveness during the examination.
Attachment to SIR-07-3 10. Rev. 0 3 of 4
Spray Nozzle Weld Overlay Examination Component Identification:
N/SE Weld: II-PZR-0INSEW-16 SE/P Weld: 1-RC-FW-328 Examination Date: October 13, 2007 Examination Time: 14:42 to 15:20 Examination Regions: Weld Overlay Material, Outer 25% Dissimilar Metal Weld & Adjacent Base Material and Outer 25% Safe End-to-Pipe Weld & Adjacent Base Material Examination Coverage: 100% coverage of the Code-required volume was achieved during the examinations.
Axial Examination Angles: 00 through 830 (in 1' Increments) - Circumferential Examination Angles: 0' through 630 (in 10 Increments)
Examination Summary: No suspected flaw indications were observed during the examinations.
The examination gain was adjusted to maintain the procedure-specified baseline noise level from 5% to 20% of full screen height. The lower range of examination angles detected responses from the inside surface of the component which were useful for monitoring search unit contact /
coupling effectiveness during the examination.
Surge Nozzle Weld Overlay Examination Component Identification:
N/SE Weld: II-PZR-OINSEW-15 SE/P Weld: 1-RC-FW-3 Examination Date: October 12, 2007 Examination Time: 00:27 to 01:42 Examination Regions: Weld Overlay Material, Outer 25% Dissimilar Metal Weld & Adjacent Base Material and Outer 25% Safe End-to-Pipe Weld & Adjacent Base Material Examination Coverage: 100% coverage of the Code-required volume was achieved during the examinations.
Axial Examination Angles: 00 through 830 (in 10 Increments) - Circumferential Examination Angles: 0' through 71' (in 10 Increments)
Examination Summary: No suspected flaw indications were observed during the examinations.
The examination gain was adjusted to maintain the procedure-specified baseline noise level from 5% to 20% of full screen height. The lower range of examination angles detected responses from the inside surface of the component which were useful for monitoring search unit contact /
coupling effectiveness during the examination.
Attachment to SIR-07-3 10, Rev. 0 4 of 4 Structural Integrity Associates, Inc.