ULNRC-05424, Results of Inspections Performed for Pressurizer Full Structural Weld Overlays Installed at Callaway Plant: Difference between revisions

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{{#Wiki_filter:AmerenUE Callaway Plant PO Box 620 Fulton, MO 65251 July 9, 2007 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Stop P1-137 Washington, DC 20555-0001 Ladies and Gentlemen:
{{#Wiki_filter:AmerenUE                                                                             PO Box 620 Callaway Plant                                                                        Fulton, MO 65251 July 9, 2007 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Stop P1-137 Washington, DC 20555-0001 Ladies and Gentlemen:                                                   ULNRC-05424 DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 UNION ELECTRIC CO.
ULNRC-05424 WAmerein UE DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 UNION ELECTRIC CO.RESULTS OF INSPECTIONS PERFORMED FOR PRESSURIZER FULL STRUCTURAL WELD OVERLAYS INSTALLED AT CALLAWAY PLANT Reference 1: Reference 2: Reference 3: AmerenUE letter ULNRC-05373, "Actions for Addressing Concerns Regarding Pressurizer Alloy 82/182 Butt Welds," dated February 28, 2007.AmerenUE letter ULNRC-05413, "Results of Ultrasonic Examinations of Full Structural Weld Overlays on the Pressurizer Nozzle Welds," dated May 4, 2007.AmerenUE letter ULNRC-05385, "Response to Request for Additional Information Regarding 10 CFR 50.55a Request for Relief from ASME Section XI Repair and Replacement Requirements:
WAmerein                      RESULTS OF INSPECTIONS PERFORMED FOR PRESSURIZER FULL STRUCTURAL WELD OVERLAYS UE                                  INSTALLED AT CALLAWAY PLANT Reference 1: AmerenUE letter ULNRC-05373, "Actions for Addressing Concerns Regarding Pressurizer Alloy 82/182 Butt Welds,"
Proposed Alternatives for Application of Structural Weld Overlays to Pressurizer Nozzle Welds," dated March 26, 2007.By letter dated February 28, 2007 (Reference 1), AmerenUE (Union Electric)committed to submit results of the follow-up inspections to be performed for the weld overlays that were installed on the pressurizer nozzles at the Callaway plant during Refuel 15. Specifically, AmerenUE committed to provide a report of the inspection results within 60 days following restart from Refuel 15. Refuel 15 was subsequently concluded at the Callaway plant on May 10, 2007 when the main generator was synchronized to the grid.AmerenUE hereby reports that appropriate inspections, performed in accordance with the qualification requirements of the industry's Performance Demonstration Initiative (PDI), were performed on the pressurizer weld overlays following their installation during Refuel 15. Based upon the PDI-qualified ultrasonic examinations, there were no recordable indications in the overlay welds, XOY 7 a subsidiary of Ameren Corporation K(Wg ULNRC-05424 July 9, 2007 Page 2 of 4 including the outer 1/4 of the association dissimilar metal welds (pressurizer to safe end) and the adjoining stainless steel welds (safe end to stainless steel pipe).These results were also reported in AmerenUE's letter dated May 4, 2007 (Reference
dated February 28, 2007.
: 2) which was submitted in accordance with a commitment made by AmerenUE in its letter dated March 26, 2007 (Reference 3). Upon submittal of this letter, no further action or correspondence is required in connection with the pressurizer weld overlays installed at Callaway.
Reference 2: AmerenUE letter ULNRC-05413, "Results of Ultrasonic Examinations of Full Structural Weld Overlays on the Pressurizer Nozzle Welds," dated May 4, 2007.
No new or additional regulatory commitments are made in this letter.For any additional questions regarding this matter, please contact me at 573-676-8129 or Scott A. Maglio at 573-676-8719.
Reference 3: AmerenUE letter ULNRC-05385, "Response to Request for Additional Information Regarding 10 CFR 50.55a Request for Relief from ASME Section XI Repair and Replacement Requirements: Proposed Alternatives for Application of Structural Weld Overlays to Pressurizer Nozzle Welds,"
Sincerely, Luke H. Graessle Manager -Regulatory Affairs MGH/TBE/slk ULNRC-05424 July 9, 2007 Page 3 of 4 cc: Mr. Bruce S. Mallett Regional Administrator U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-4005 Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road Steedman, MO 65077 Mr. Jack N. Donohew (2 copies)Licensing Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop O-7D 1 Washington, DC 20555-2738 Missouri Public Service Commission Governor Office Building 200 Madison Street PO Box 360 Jefferson City, MO 65102-0360 ULNRC-05424 July 9, 2007 Page 4 of 4 bcc: C. D. Naslund A. C. Heflin L. H. Graessle G. A. Hughes S. A. Maglio S. L. Gallagher (100)L. M. Belsky (NSRB)T. B. Elwood A160.0761 Certrec Corporation 4200 South Hulen, Suite 422 Fort Worth, TX 76109 (Certrec receives ALL attachments as long as they are non-safeguards and may be publicly disclosed.)
dated March 26, 2007.
By letter dated February 28, 2007 (Reference 1), AmerenUE (Union Electric) committed to submit results of the follow-up inspections to be performed for the weld overlays that were installed on the pressurizer nozzles at the Callaway plant during Refuel 15. Specifically, AmerenUE committed to provide a report of the inspection results within 60 days following restart from Refuel 15. Refuel 15 was subsequently concluded at the Callaway plant on May 10, 2007 when the main generator was synchronized to the grid.
AmerenUE hereby reports that appropriate inspections, performed in accordance with the qualification requirements of the industry's Performance Demonstration Initiative (PDI), were performed on the pressurizer weld overlays following their installation during Refuel 15. Based upon the PDI-qualified ultrasonic examinations, there were no recordable indications in the overlay welds, XOY 7 a subsidiary of Ameren Corporation                                                                     K(Wg
 
ULNRC-05424 July 9, 2007 Page 2 of 4 including the outer 1/4 of the association dissimilar metal welds (pressurizer to safe end) and the adjoining stainless steel welds (safe end to stainless steel pipe).
These results were also reported in AmerenUE's letter dated May 4, 2007 (Reference 2) which was submitted in accordance with a commitment made by AmerenUE in its letter dated March 26, 2007 (Reference 3). Upon submittal of this letter, no further action or correspondence is required in connection with the pressurizer weld overlays installed at Callaway. No new or additional regulatory commitments are made in this letter.
For any additional questions regarding this matter, please contact me at 573-676-8129 or Scott A. Maglio at 573-676-8719.
Sincerely, Luke H. Graessle Manager - Regulatory Affairs MGH/TBE/slk
 
ULNRC-05424 July 9, 2007 Page 3 of 4 cc: Mr. Bruce S. Mallett Regional Administrator U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-4005 Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road Steedman, MO 65077 Mr. Jack N. Donohew (2 copies)
Licensing Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop O-7D1 Washington, DC 20555-2738 Missouri Public Service Commission Governor Office Building 200 Madison Street PO Box 360 Jefferson City, MO 65102-0360
 
ULNRC-05424 July 9, 2007 Page 4 of 4 bcc: C. D. Naslund A. C. Heflin L. H. Graessle G. A. Hughes S. A. Maglio S. L. Gallagher (100)
L. M. Belsky (NSRB)
T. B. Elwood A160.0761 Certrec Corporation 4200 South Hulen, Suite 422 Fort Worth, TX 76109 (Certrec receives ALL attachments as long as they are non-safeguards and may be publicly disclosed.)
Send to the following without attachments:
Send to the following without attachments:
Ms. Diane M. Hooper Supervisor, Licensing WCNOC P.O. Box 411 Burlington, KS 66839 Mr. Scott Bauer Regulatory Affairs Palo Verde NGS P.O. Box 52034, Mail Station 7636 Phoenix, AZ 85072-2034 Mr. Scott Head Supervisor, Licensing South Texas Project NOC Mail Code N5014 P.O. Box 289 Wadsworth, TX 77483 Mr. Dennis Buschbaum TXU Power Comanche Peak SES P.O. Box 1002 Glen Rose, TX 76043 Mr. Stan Ketelsen Manager, Regulatory Services Pacific Gas & Electric Mail Stop 104/5/536 P.O. Box 56 Avila Beach, CA 93424 Mr. John O'Neill Pillsbury Winthrop Shaw Pittman LLP 2300 N. Street N.W.Washington, DC 20037}}
Ms. Diane M. Hooper                       Mr. Dennis Buschbaum Supervisor, Licensing                     TXU Power WCNOC                                     Comanche Peak SES P.O. Box 411                               P.O. Box 1002 Burlington, KS 66839                      Glen Rose, TX 76043 Mr. Scott Bauer                            Mr. Stan Ketelsen Regulatory Affairs                        Manager, Regulatory Services Palo Verde NGS                            Pacific Gas & Electric P.O. Box 52034,                            Mail Stop 104/5/536 Mail Station 7636                          P.O. Box 56 Phoenix, AZ 85072-2034                    Avila Beach, CA 93424 Mr. Scott Head                            Mr. John O'Neill Supervisor, Licensing                      Pillsbury Winthrop Shaw Pittman LLP South Texas Project NOC                    2300 N. Street N.W.
Mail Code N5014                            Washington, DC 20037 P.O. Box 289 Wadsworth, TX 77483}}

Latest revision as of 05:32, 23 November 2019

Results of Inspections Performed for Pressurizer Full Structural Weld Overlays Installed at Callaway Plant
ML071980376
Person / Time
Site: Callaway Ameren icon.png
Issue date: 07/09/2007
From: Graessle L
Ameren Corp, AmerenUE
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
ULNRC-05424
Download: ML071980376 (4)
v • d • e


Text

AmerenUE PO Box 620 Callaway Plant Fulton, MO 65251 July 9, 2007 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Stop P1-137 Washington, DC 20555-0001 Ladies and Gentlemen: ULNRC-05424 DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 UNION ELECTRIC CO.

WAmerein RESULTS OF INSPECTIONS PERFORMED FOR PRESSURIZER FULL STRUCTURAL WELD OVERLAYS UE INSTALLED AT CALLAWAY PLANT Reference 1: AmerenUE letter ULNRC-05373, "Actions for Addressing Concerns Regarding Pressurizer Alloy 82/182 Butt Welds,"

dated February 28, 2007.

Reference 2: AmerenUE letter ULNRC-05413, "Results of Ultrasonic Examinations of Full Structural Weld Overlays on the Pressurizer Nozzle Welds," dated May 4, 2007.

Reference 3: AmerenUE letter ULNRC-05385, "Response to Request for Additional Information Regarding 10 CFR 50.55a Request for Relief from ASME Section XI Repair and Replacement Requirements: Proposed Alternatives for Application of Structural Weld Overlays to Pressurizer Nozzle Welds,"

dated March 26, 2007.

By letter dated February 28, 2007 (Reference 1), AmerenUE (Union Electric) committed to submit results of the follow-up inspections to be performed for the weld overlays that were installed on the pressurizer nozzles at the Callaway plant during Refuel 15. Specifically, AmerenUE committed to provide a report of the inspection results within 60 days following restart from Refuel 15. Refuel 15 was subsequently concluded at the Callaway plant on May 10, 2007 when the main generator was synchronized to the grid.

AmerenUE hereby reports that appropriate inspections, performed in accordance with the qualification requirements of the industry's Performance Demonstration Initiative (PDI), were performed on the pressurizer weld overlays following their installation during Refuel 15. Based upon the PDI-qualified ultrasonic examinations, there were no recordable indications in the overlay welds, XOY 7 a subsidiary of Ameren Corporation K(Wg

ULNRC-05424 July 9, 2007 Page 2 of 4 including the outer 1/4 of the association dissimilar metal welds (pressurizer to safe end) and the adjoining stainless steel welds (safe end to stainless steel pipe).

These results were also reported in AmerenUE's letter dated May 4, 2007 (Reference 2) which was submitted in accordance with a commitment made by AmerenUE in its letter dated March 26, 2007 (Reference 3). Upon submittal of this letter, no further action or correspondence is required in connection with the pressurizer weld overlays installed at Callaway. No new or additional regulatory commitments are made in this letter.

For any additional questions regarding this matter, please contact me at 573-676-8129 or Scott A. Maglio at 573-676-8719.

Sincerely, Luke H. Graessle Manager - Regulatory Affairs MGH/TBE/slk

ULNRC-05424 July 9, 2007 Page 3 of 4 cc: Mr. Bruce S. Mallett Regional Administrator U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-4005 Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road Steedman, MO 65077 Mr. Jack N. Donohew (2 copies)

Licensing Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop O-7D1 Washington, DC 20555-2738 Missouri Public Service Commission Governor Office Building 200 Madison Street PO Box 360 Jefferson City, MO 65102-0360

ULNRC-05424 July 9, 2007 Page 4 of 4 bcc: C. D. Naslund A. C. Heflin L. H. Graessle G. A. Hughes S. A. Maglio S. L. Gallagher (100)

L. M. Belsky (NSRB)

T. B. Elwood A160.0761 Certrec Corporation 4200 South Hulen, Suite 422 Fort Worth, TX 76109 (Certrec receives ALL attachments as long as they are non-safeguards and may be publicly disclosed.)

Send to the following without attachments:

Ms. Diane M. Hooper Mr. Dennis Buschbaum Supervisor, Licensing TXU Power WCNOC Comanche Peak SES P.O. Box 411 P.O. Box 1002 Burlington, KS 66839 Glen Rose, TX 76043 Mr. Scott Bauer Mr. Stan Ketelsen Regulatory Affairs Manager, Regulatory Services Palo Verde NGS Pacific Gas & Electric P.O. Box 52034, Mail Stop 104/5/536 Mail Station 7636 P.O. Box 56 Phoenix, AZ 85072-2034 Avila Beach, CA 93424 Mr. Scott Head Mr. John O'Neill Supervisor, Licensing Pillsbury Winthrop Shaw Pittman LLP South Texas Project NOC 2300 N. Street N.W.

Mail Code N5014 Washington, DC 20037 P.O. Box 289 Wadsworth, TX 77483

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