W3F1-2008-0040, Summary of Weld Overlay Ultrasonic Examinations for Pressurizer and Hot Leg Nozzle Welds
| ML081540252 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 05/29/2008 |
| From: | Murillo R Entergy Nuclear South, Entergy Operations |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| TAC MD5388, W3F1-2008-0040 | |
| Download: ML081540252 (12) | |
Text
Entergy Nuclear South Entergy Operations, Inc.
17265 River Road Killona, LA 70057-3093 Tel 504 739 6715
- Fax 504 739 6698 rmurill@entergy.com Robert J. Murillo Licensing Manager Waterford 3 W3F1-2008-0040 May 29, 2008 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001
Subject:
Summary of Weld Overlay Ultrasonic Examinations for Pressurizer And Hot Leg Nozzle Welds at Waterford 3 Steam Electric Station.
Waterford Steam Electric Station, Unit 3 (Waterford 3)
Docket No. 50-382 License No. NPF-38
Reference:
NRC Letter to Entergy dated April 21, 2008 Approval of, "Request for Alternative W3-R&R-006 - Proposed Alternative to ASME Code Requirements for Weld Overlay (TAC NO. MD5388)."
Dear Sir or Madam:
By the reference letter dated April 21, 2008, the NRC approved the request by Entergy Operations, Inc,(Entergy) for inservice inspection (ISI) program to the requirements of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section Xl.
The requested relief was for the installation of preemptive full structural weld overlays on dissimilar metal welds of one pressurizer surge nozzle, one pressurizer spray nozzle, three pressurizer safety/relief valve nozzles, one hot leg surge nozzle, two hot leg shutdown cooling nozzles and one hot leg drain nozzle.
As part of the request, Entergy committed to submit the following information to the NRC within 14 days following completion of final Ultrasonic (UT) examinations of the weld overlays:
(a) Weld overlay examination results, including a listing of indications detected, (b) Disposition of all indications using the standards of ASME Section Xl, IWB-3514-2 and/or IWB-3514-3 criteria and, if possible, the type and nature of the indications, and (c) A discussion of any repairs to the weld overlay material and/or base metal and the reason for the repairs.
W3F1-2008-0040 Page 2 This information is provided in the attachment to this letter. The final UT examination of the weld overlays was completed on May 16, 2008.
There are no new commitments contained in this submittal.
If you have any questions or require additional information, please contact Robert Murillo at (504) 739-6715.
Si ncerel RJMIOPP/s
Attachment:
Summary of Weld Overlay Ultrasonic Examinations for Pressurizer And Hot Leg Nozzle Welds at Waterford 3 Steam Electric Station
W3F1-2008-0040 Page 3 cc:
Mr. Elmo E. Collins, Jr.
Regional Administrator U. S. Nuclear Regulatory Commission Region IV 612 E. Lamar Blvd., Suite 400 Arlington, TX 76011-4125 NRC Senior Resident Inspector Waterford Steam Electric Station Unit 3 P.O. Box 822 Killona, LA 70066-0751 U. S. Nuclear Regulatory Commission Attn: Mr. N. Kalyanam Mail Stop O-07D1 Washington, DC 20555-0001 Wise, Carter, Child & Caraway ATTN: J. Smith P.O. Box 651 Jackson, MS 39205 Winston & Strawn ATTN: N.S. Reynolds 1700 K Street, NW Washington, DC 20006-3817 Morgan; Lewis & Bockius LLP ATTN: T.C. Poindexter 1111 Pennsylvania Avenue, NW Washington, DC 20004
Attachment W3F1-2008-0040 Summary of Weld Overlay Ultrasonic Examinations for Pressurizer
'And Hot Leg Nozzle Welds at Waterford 3 Steam Electric Station
Structural Integrity Associates, Inc.
3315 Almaden Expressway Suite 24 San Jose, CA 95118-1557 Phone:
408-978-8200 Fax: 408-978-8964 www.structint.com jaxline@structint.com May 17, 2008 SIR-08-126-NPS, Rev. 0 Mr. Terry Boozer Entergy Operations, Inc.
Waterford Steam Electric Station, Unit 3 17265 River Road Killona, LA 70075
Subject:
Summary of Weld Overlay Ultrasonic Examinations for Pressurizer Surge, Spray, and Safety Relief, and Hot Leg Surge, Shutdown Cooling and Drain Nozzle-to-Safe End Welds at Entergy Waterford Steam Ehlctric Statiort. Unit 3
Reference:
RevisedRequest for Alternative W3-R&R-006, Proposed Alternative to ASME Code Requirements for Weld Overlay Repairs, Waterford Steam Electric Station, Unit 3 February 21, 2008
Dear Mr. Boozer:
The following attachment is transmitted in support of Entergy's response to commitments in the above-referenced request for alternative:
Attachment:
A report summarizing the ultrasonic examinations performed on the Waterford Steam Electric Station, Unit 3 weld overlays. The examinations were performed using Structural Integrity's PDI qualified ultrasonic examination procedures and examiners. 'No flaw indications were detected in the overlays, and thus no disposition of indications was required.
Annapolis, MD Austin, TX Centennial, CO Cerritos, CA Chattanooga, TN Huntersville,' NC Ontario, Canada South Jordon, UT Stonington, CT Uniontown, OH 410-571-0861 512-533-9191 303-792-0077 562-402-3076 423-553-1180 704-597-5554 905-829-9817 801-676-0216 860-536-3982 330-899-9753
Mr. Terry Boozer SIR-08-126-NPS. Rev. 0 May 17, 2008 Page 2 of 2 If you have any questions or comments regarding this sumnmary, please contact one of tile Uni dersigned.
Prepared by:
Verified by:
____5/.17/08 Ned A. Finneyjt:>
Date Senior Consultant, NDE L.evel 111 Approved by:
~/157/08
.1 lilies W. Axlin, P';
Date S nior Consultant Attachment cc: David Goetcheus Prj0ect File: WS.S-1 9Q-404 Chris S. I...ohse Engineering Analyst 05/17/08 Date Stu -
g Associates, Inc.
Attachment Summary of Weld Overlay Ultrasonic Examinations for Pressurizer Surge, Spray, and Safety Relief, and Hot Leg Surge, Shutdown Cooling and Drain Nozzle-to-Safe End Welds Waterford Steam Electric Station, Unit 3 Attachment to SIR-08-126-NPS, Rev. 0 1 of 6 Structural Itegrity Associates, Inc.
Ultrasonic Examination Procedure SI-UT-126, Revision 3, Procedure for the Phased Array Ultrasonic Examination of Weld Overlaid Similar and Dissimilar Metal Welds, was used for examinations of the Pressurizer Surge, Spray, and Safety Relief, and Hot Leg Shutdown Cooling and Surge nozzle weld overlays (WOL).
SI-UT-128, Revision 1, Manial Conventional Ultrasonic Examination of Weld Overlaid Similar and Dissimilar Metal Welds, was used for examinations of the Hot Leg Drain nozzle WOL.
These procedures, and the examiners who applied the procedure, are qualified through the PDI Program at the EPRI NDE Center.
Pressurizer Surge Nozzle Weld Overlay Examination Component Identification: Pressurizer Surge Nozzle Weld Overlay (Welds: 16-017 and 16-016)
, ExaminationtDlate: 05/08/08 Examination Time: 12:02 - 13:26 Weld Overlay Regions Examined: Overlay, Weld and Base Material (Outer 25%) Dissimilar Metal (DM) Weld and Adjacent Stainless Steel (SS) Weld Axial Examination Angles: 0' through 83' (Minimum Range)
Circumferential Examination Angles: 0' through-690 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. During the course of the examinations, 100% coverage of the weld overlay material was achieved, 92.6% coverage of the Code-required volume (CRV) for the DM weld was achieved and 86.6% coverage of the CRV for the SS weld was achieved.
Attachment to SIR-08-126-NPS, Rev. 0 2 of 6 Structural Integrity Associates, Inc.
Pressurizer Spray Nozzle Weld Overlay Examination Component Identification: Pressurizer Spray Nozzle Weld Overlay (Welds: 25-029 and 25-028)
Examination Date: 05/10/08 Examination Time: 12:11 - 13:36 Weld Overlay Regions Examined: Overlay, Weld and Base Material (Outer 25%) DM Weld and Adjacent SS Weld Axial Examination Angles: 0' through 830 (Minimum Range)
Circumferential Examination Angles: 00 through 590 (Minimum)
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. During the course of the examinations, 100% coverage of the weld overlay material was achieved, 100% coverage of the CRV for the DM weld was achieved and 100%-coverage of the CRV for the SS weld was
-achieved.
Pressurizer Safety Relief Valve A Nozzle Weld Overlay Examination Component Identification: Pressurizer Safety Relief Valve A Nozzle Weld Overlay (Weld:
26-006)
Examination Date: 05/10/08 Examination Time: 13:46 - 14:22 Weld Overlay Regions Examined: Overlay, Weld and Base Material (Outer 25%) DM Weld Axial Examination Angles: 0' through 840 Circumferential Examination Angles: 0' through 64' 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. During the course of the examinations, 100% coverage of the weld overlay material was achieved and 93.0% coverage of the CRV for the DM weld was achieved.
Attachment to SIR-08-126-NPS, Rev. 0 3 of 6 Structural Integrity Associates, Inc.
Pressurizer Safety Relief Valve B Nozzle Weld Overlay Examination Component Identification: Pressurizer Safety Relief Valve B Nozzle Weld Overlay (Weld:
26-001)
Examination Date: 05/10/08 Examination Time: 14:26 - 14:53 Weld Overlay Regions Examined: Overlay, Weld and Base Material (Outer 25%) DM Weld Axial Examination Angles: 00 through 830 (Minimum Range)
Circumferential Examination Angles: 0' through 64' 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. During the course of the examinations, 100% coverage of the weld overlay material was achieved and 91.7% coverage of the CRV for the DM weld was achieved.
Pressurizer Safety Relief Valve C Nozzle Weld Overlay Examination Component Identification: Pressurizer Spare (Capped) Nozzle Weld Overlay (Weld: 26-0 10)
Examination Date: 05/10/08 Examination Time: 14:54 - 15:28 Weld Overlay Regions Examined: Overlay, Weld and Base Material (Outer 25%) DM Weld Axial Examination Angles: 00 through 84' Circumferential Examination Angles: 00 through 640 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. During the course of the examinations, 100% coverage of the weld overlay material was achieved and 92.3% coverage of the CRV for the DM weld was achieved.
Attachment to SIR 126-NPS, Rev. 0 4 of 6 10 Structural Integrity Associates, Inc.
Hot Leg Shutdown Cooling A Nozzle Weld Overlay Examination Component Identification: Hot Leg Shutdown Cooling A Nozzle Weld Overlay (Welds:
15-008 and 21-001)
Examination Date: 05/15/08 Examination Time: 22:30 - 23:50 Weld Overlay Regions Examined: Overlay, Weld and Base Material (Outer 25%) DM Weld and Adjacent SS Weld Axial Examination Angles: 0' through 840 Circumferential Examination Angles: 00 through 69' 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. During the course of the examinations, 100% coverage of the weld overlay material was achieved, 91.6% coverage of the CRV for the DM weld was achieved and 92.5% coverage of the CRV for the SS weld was achieved.
Hot Leg Shutdown Cooling B Nozzle Weld Overlay Examination Component Identification: Hot Leg Shutdown Cooling B Nozzle Weld Overlay (Welds:
06-006 and 22-001)
Examination Date: 05/14/08 Examination Time: 16:45 - 17:59 Weld Overlay Regions Examined: Overlay, Weld and Base Material (Outer 25%) DM Weld and Adjacent SS Weld Axial Examination Angles: 00 through 840 (Minimum Range)
Circumferential Examination Angles: 00 through 690 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. During the course of the examinations, 100% coverage of the weld overlay material was achieved, 90.1% coverage of the CRV for the DM weld was achieved and 92.3% coverage of the CRV for the SS weld was achieved.
Attachment toSIR-08-126-NPS, Rev. 0 5 of 6 Structural Integrity Associates, Inc.
Hot Leg Surge Nozzle Weld Overlay Examination Component Identification: Hot Leg Surge Nozzle Weld Overlay (Welds: 15-009 and 16-001)
Examination Date: 05/15/08 Examination Time: 00:53 - 02:27 Weld Overlay Regions Examined: Overlay, Weld and Base Material (Outer 25%) DM Weld and Adjacent SS Weld Axial Examination Angles: 00 through 840 (Minimum Range)
Circumferential Examination Angles: 0' through 69'.
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. During the course of the examinations, 100% coverage of the weld overlay material was achieved, 92.6% coverage of the CRV for the DM weld was achieved and 87.6% coverage of the CRV for the SS weld was achieved.
Hot Leg Drain Nozzle Weld Overlay Examination Component Identification: Hot Leg Drain Nozzle Weld Overlay (Welds: 15-006 and 32-001)
Examination Date: 05/15/08 Examination Time: 19:02 to 20:00 Weld Overlay Regions Examined: Overlay, Weld and Base Material (Outer 25%) DM Weld and Adjacent SS Weld Axial Examination Angles: 0', 450, 60', 70' and ODCr (Outer Diameter Creeping Wave)
Circumferential Examination Angles: 00, 31°, 36', 45', and ODCr 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. During the course of the examinations, 100%
coverage of the weld overlay material was achieved, 100% coverage of the CRV for the DM weld was achieved and 100% coverage of the CRV for the SS weld was achieved.
Attachment to SIR-08-126-NPS, Rev. 0 6 of 6 Structural Integrity Associates, Inc.