CP-200901403, Comanche Peak - Supplement to Response to NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors

Comanche Peak - Supplement to Response to NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors

ML093080003
Person / Time
Site:	Comanche Peak
Issue date:	10/13/2009
From:	Madden F W Luminant Generation Co, Luminant Power
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
CP-200901403, GL-04-002, TXX-09218
Download: ML093080003 (2)

Text

Rafael Flores Senior Vice President& Chief Nuclear Officer rafael.fiores@Luminant.com Luminant Power P 0 Box 1002 6322 North FM 56 Glen Rose. TX 76043 Luminant T 254 897 5550 C 817 5590403 F 254 897 6652 CP-200901403 TXX-09128 Ref. # GL 2004-02 October 13, 2009 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION DOCKET NOS. 50-445 AND 50-446 SUPPLEMENT TO RESPONSE TO NRC GENERIC LETTER (GL) 2004-02,"POTENTIAL IMPACT OF DEBRIS BLOCKAGE ON EMERGENCY RECIRCULATION DURING DESIGN BASIS ACCIDENTS AT PRESSURIZED-WATER REACTORS"

REFERENCES:

1. Letter Logged TXX-08033 from M. Blevins to the NRC, dated February 29, 2008, SUPPLEMENT TO RESPONSE TO NRC GENERIC LETTER (GL) 2004-02 2. Letter Logged TXX-08141 from M. Blevins to the NRC, dated November 26, 2008, SUPPLEMENT TO RESPONSE TO NRC GENERIC LETTER (GL) 2004-02 3.

SUMMARY

OF JULY 9,2009, CATEGORY 1 MEETING WITH LUMINANT GENERATION COMPANY LLC ON RESOLUTION OF GENERIC LETTER 2004-02, dated July 31, 2009 (TAC NOS. MC4676 AND MC4677) [ML091970578]

4. Letter dated July 15, 2009, from Balwant K. Singal (NRC) to Rafael Flores (Luminant)

-REQUEST FOR ADDITIONAL INFORMATION REGARDING RESPONSE TO GENERIC LETTER 2004-02 [ML091670738]

5. Letter logged TXX-09114 from Raphael Flores to the NRC, dated September 10, 2009, SUPPLEMENT TO RESPONSE TO NRC GENERIC LETTER (GL) 2004-02 6. Summary of August 10, 2009, CATEGORY 1 MEETING with LUMINANT Generation Company LLC on Resolution of GENERIC LETTER 2004-02, dated September 1, 2009 (TAC NOS. MC4676 AND MC4677)7. Letter logged TXX-09126 from Raphael Flores to the NRC dated October 12, 2009, SUPPLEMENT TO RESPONSE TO NRC GENERIC LETTER (GL) 2004-02

Dear Sir or Madam:

By letter dated February 29, 2008 [Reference 1] (Agencywide Documents Access and Management System (ADAMS) Accession No. ML080660596), Luminant Generation Company LLC (Luminant Power)supplemented responses to Generic Letter (GL) 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors," for Comanche Peak, Units 1 and 2. By letter November 26, 2008 [Reference 2] (ADAMS Accession No. ML083500465), Luminant Power revised the response submitted in Reference

1. This letter provides revision 2 of Engineering Report ER-ESP-001 submitted in References 1 and 2. Luminant Power met with the Nuclear Regulatory Commission (NRC) on July 9, 2009, in a public meeting [Reference 3] addressing NRC questions regarding responses to GL 2004-02 [Reference 41 and subsequently participated in a public A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway

• Comanche Peak

• Diablo Canyon

• Palo Verde

• San Onofre

• South Texas Project

• Wolf Creek U. S. Nucdear Regutatory Commission TXX-09128 Page 2 10/13/2009 phone call on August 10, 2009 [Reference 61 to conclude the discussion of the NRC request for additional information from the public meeting. Luminant Power provided additional information in response to RAI 24 and RAI 37 regarding Secondary Line Breaks to the NRC on September 10, 2009[Reference 5]. During the August 10th phone call with the NRC, Luminant Power agreed to provide a video of Comanche Peak fiber transport testing to the NRC. Luminant Power provided the video of the Comanche Peak fiber transport testing to the NRC on October '12, 2009 [Reference 7]. The enclosure to this letter provides the Luminant Power Engineering Report for Generic Safety Issue (GSI)-191 containing revised sections addressing the RAIs provided in Reference 4.This letter contains no new or revised licensing commitments regarding Comanche Peak Units 1 and 2.Should you have any questions, please contact Mr. J. D. Seawright at (254) 897-0140.I state under penalty of perjury that the foregoing is true and correct.Executed on October 13, 2009.Sincerely, Luminant Generation Company LLC Rafael Flores By: :_ _ _ _ _Fred W. Madden Director, Oversight

& Regulatory Affairs Enclosure

-Engineering Report ER-ESP-001 c -E. E. Collins, Region IV B. K. Singal, NRR Resident Inspectors, Comanche Peak