ULNRC-05310, Supplemental Information for the 60-Day Response to NRC Generic Letter 2006-03, Potentially Nonconforming Hemyc and MT Fire Barrier Configurations.

Supplemental Information for the 60-Day Response to NRC Generic Letter 2006-03, Potentially Nonconforming Hemyc and MT Fire Barrier Configurations.

ML062060383
Person / Time
Site:	Callaway
Issue date:	07/17/2006
From:	Keith Young AmerenUE
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
GL-06-003, ULNRC-05310
Download: ML062060383 (3)

Text

AmerenUE PO Box 620 Callaway Plant Fulton, MO 65251 July 17, 2006 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk 11555 Rockville Pike Rockville, MD 20852 Ladies and Gentlemen: ULNRC-05310 DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 S'Amerei UiE UNION ELECTRIC CO.

SUPPLEMENTAL INFORMATION FOR THE 60-DAY RESPONSE TO NRC GENERIC LETTER 2006-03, "POTENTIALLY NONCONFORMING HEMYC AND MT FIRE BARRIER CONFIGURATIONS" NRC Generic Letter (GL) 2006-03, "Potentially Nonconforming Hemyc and MT Fire Barrier Configurations," dated April 10, 2006, was issued to request information from licensees regarding Hemyc and MT fire barriers, or other fire barriers using the materials and configurations described in the generic letter.

Callaway Plant provided the information requested by Generic Letter 2006-03 with ULNRC-05294, a letter dated June 1, 2006.

Two related questions were raised on the last paragraph on the second page of Callaway's response letter. Specifically, what guidance was used for the installation of the Darmatt fire barrier material and how were any deviations evaluated.

The fire barrier material was tested and installed with the guidance provided in NRC GL 86-10, Supplement 1, "Fire Endurance Test Acceptance Criteria for Fire Barrier Systems Used to Separate Redundant Safe Shutdown Trains within the Same Fire Area". Any deviations from the tested configurations were evaluated against GL 86-10, Supplement 1.

In accordance with the provisions of Section 182a of the Atomic Energy Act of 1954, as amended, and 10 CFR 50.54(f), AmerenUE is submitting this letter under oath and affirmation, as clarified in Regulatory Issue Summary (RIS) 2001-18, "Requirements for Oath or Affirmation."

a subsidiaryaf Ameren Corporation

ULNRC-05310 July 17, 2006 Page 2 This letter does not contain any commitments. If you have questions regarding this response, please contact D. E. Shafer at 314-554-3104.

I declare under penalty of perjury that the foregoing is true and correct.

Sincerely, Executed on July 17, 2006 Manager - Regulatory Affairs PMB/jdg

ULNRC-05310 July 17, 2006 Page 3 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 Mr. Ron Reynolds Director Missouri State Emergency Management Agency P.O. Box 116 Jefferson City, MO 65102

Text

AmerenUE PO Box 620 Callaway Plant Fulton, MO 65251 July 17, 2006 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk 11555 Rockville Pike Rockville, MD 20852 Ladies and Gentlemen: ULNRC-05310 DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 S'Amerei UiE UNION ELECTRIC CO.

SUPPLEMENTAL INFORMATION FOR THE 60-DAY RESPONSE TO NRC GENERIC LETTER 2006-03, "POTENTIALLY NONCONFORMING HEMYC AND MT FIRE BARRIER CONFIGURATIONS" NRC Generic Letter (GL) 2006-03, "Potentially Nonconforming Hemyc and MT Fire Barrier Configurations," dated April 10, 2006, was issued to request information from licensees regarding Hemyc and MT fire barriers, or other fire barriers using the materials and configurations described in the generic letter.

Callaway Plant provided the information requested by Generic Letter 2006-03 with ULNRC-05294, a letter dated June 1, 2006.

Two related questions were raised on the last paragraph on the second page of Callaway's response letter. Specifically, what guidance was used for the installation of the Darmatt fire barrier material and how were any deviations evaluated.

The fire barrier material was tested and installed with the guidance provided in NRC GL 86-10, Supplement 1, "Fire Endurance Test Acceptance Criteria for Fire Barrier Systems Used to Separate Redundant Safe Shutdown Trains within the Same Fire Area". Any deviations from the tested configurations were evaluated against GL 86-10, Supplement 1.

In accordance with the provisions of Section 182a of the Atomic Energy Act of 1954, as amended, and 10 CFR 50.54(f), AmerenUE is submitting this letter under oath and affirmation, as clarified in Regulatory Issue Summary (RIS) 2001-18, "Requirements for Oath or Affirmation."

a subsidiaryaf Ameren Corporation

ULNRC-05310 July 17, 2006 Page 2 This letter does not contain any commitments. If you have questions regarding this response, please contact D. E. Shafer at 314-554-3104.

I declare under penalty of perjury that the foregoing is true and correct.

Sincerely, Executed on July 17, 2006 Manager - Regulatory Affairs PMB/jdg

ULNRC-05310 July 17, 2006 Page 3 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 Mr. Ron Reynolds Director Missouri State Emergency Management Agency P.O. Box 116 Jefferson City, MO 65102