CP-201201384, Response to Request for Additional Information for Relief Request No. E-1

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Response to Request for Additional Information for Relief Request No. E-1
ML12348A006
Person / Time
Site: Comanche Peak Luminant icon.png
Issue date: 11/14/2012
From: Flores R, Madden F
Luminant Power, Luminant Generation Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
CP-201201384, TXX-12162, TAC ME9262, TAC ME9621
Download: ML12348A006 (11)
v • d • e


Text

Rafael Flores Luminant Power Senior Vice President P 0 Box 1002

&Chief Nuclear Officer 6322 North FM 56 Rafael.Flores@Luminant.com Glen Rose, TX 76043 Luminant T 254 897 5550 C 817 559 0403 F 254 897 6652 CP-201201384 Ref. # 10CFR50.55a Log # TXX-12162 November 14, 2012 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

SUBJECT:

COMANCHE PEAK NUCLEAR POWER PLANT DOCKET NO. 50-445 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION FOR RELIEF REQUEST NO. E-1 (TAC NOS. ME9261 AND ME9262)

REFERENCES:

1. Letter logged TXX-12118 dated August 16, 2012 from Rafael Flores to the NRC submitting Relief Request No. E-1 for Containment Electrical Penetrations (Second IWE Interval End Date: September 9, 2011).
2. Email dated October 22, 2012 from Balwant Singal of the NRC to Timothy Hope of Luminant Power requesting additional information regarding Relief Request No. E-1 (TAC Nos. ME9261 and ME9262).

Dear Sir or Madam:

Per reference 1, Luminant Generation Company LLC (Luminant Power) previously submitted a request for relief for containment electrical penetrations. Per reference 2, the NRC provided a request for additional information regarding the subject relief request.

Luminant Power has provided the information requested per reference 2 in the Attachments 1 and 2 to this letter.

This communication contains no new commitment regarding Comanche Peak Units 1 and 2.

Should you have any questions, please contact Mr. Jack Hicks at (254) 897-6725.

I A member of the STARS Alliance ý F Callaway

  • Comanche Peak
  • Diablo Canyon
  • Palo Verde
  • San Onofre
  • Wolf Creek

U. S. Nuclear Regulatory Commission TXX-12162 Page 2 of 2 Sincerely, Luminant Generation Company LLC Rafael Flores By: <2. ,*,

Fred W. Madden Director, Oversight & Regulatory Affairs Attachment I Response to Request for Additional Information for Relief Request E-1 Local Leak Rate (Type B) Results c- E. E. Collins, Region IV Luis Ponce B. K. Singal, NRR Texas Department of Licensing and Regulation Resident Inspectors, Comanche Peak P. 0. Box 12157 Jack Ballard, ANII, Comanche Peak Austin, Texas 78711-2332 to TXX-12162 Page 1 of 2 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION FOR RELIEF REQUEST NUMBER E-1 FOR THE UNITS 1 AND 2 SECOND 10 YEAR IWE INTERVAL (SECOND INTERVAL END DATE: SEPTEMBER 9,2011) (TAC NOS. ME9261 AND ME9262)

The following questions were provided to Luminant Power in the email dated October 22, 2012, from Balwant Singal of the NRC to Timothy Hope of Luminant Power (reference 2) requesting additional information regarding Relief Request No. E-1:

NRC Question 1:

Section 4 of your application for RR E-1 stated that the surfaces of 20 electrical penetrations are covered with radiant energy shielding material. Section 6 of your application stated that the carbon steel containment liner, mechanical penetrations and the remaining stainless steel electrical penetrations (66 in CPNPP, Unit 1 and 64 in CPNPP, Unit 2) have all been examined each period during the second interval without any degradation or corrosion identified.

Please provide clarification that RR E-1 pertains to the visual examination of electrical penetration stainless steel assemblies and confirm that the containment liner in the local area of those electrical penetrations included in RR E-1 (total of 20 penetrations, 9 in CPNPP, Unit 1 and 11 in CPNPP, Unit 2) have been examined and no degradation or corrosion have been identified.

Luminant Power's Response to Question 1:

Relief Request E-1 pertains to the visual examination of 20 stainless steel electrical penetration assemblies covered with radiant energy shielding material that were not visually examined each period (3) during the second interval. The local areas of the containment liner around the 20 unexamined electrical penetrations were visually examined each period during the second interval, with no degradation or corrosion identified to the liner.

NRC Question 2:

Please provide the results of Title 10 of the Code of FederalRegulations (10 CFR), Part 50, Appendix J containment integrated leak rate test (Type A) and their comparison with the allowable leakage rate specified in the plant Technical Specifications (TSs).

Luminant Power's Response to Question 2:

Reference T.S. 5.5.16.c & 5.5.16.d.1 & T.S. Bases 3.6.1:

Allowable leakage rate (La) of 0.1% of containment air weight per day.

The As-found Type A test surveillance acceptance criteria is leakage rate less than or equal to 1.0 La. In addition the As-left Type A test surveillance acceptance criteria is leakage rate less than or equal to 0.75 La prior to entering the mode in which containment operability is required (Mode 4).

Unit 1Type A test results performed in April 2007:

" The As-found leakage rate was 0.063019% weight per day which met the As-found surveillance criteria of 0.1% weight per day.

  • The As-left leakage rate was 0.0630% weight per day which met the As-left surveillance criteria of 0.075% weight per day.

to TXX-12162 Page 2 of 2 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION FOR RELIEF REQUEST NUMBER E-1 FOR THE UNITS 1 AND 2 SECOND 10 YEAR IWE INTERVAL (SECOND INTERVAL END DATE: SEPTEMBER 9,2011) (TAC NOS. ME9261 AND ME9262)

Unit 2 Type A test results performed in October 2012:

  • The As-found leakage rate was 0.0595% weight per day which met the As-found surveillance criteria of 0.1% weight per day.

" The As-left leakage rate was 0.0594% weight per day which met the As-left surveillance criteria of 0.075% weight per day.

NRC Question 3:

Please provide the results of Type B leakage test of those electrical penetrations included in RR E-1 (total of 20 penetrations, 9 in CPNPP, Unit 1 and 11 in CPNPP, Unit 2) and discuss the acceptability of leakage test results and the performance history of Type B leakage testing of these electrical penetrations.

Luminant Power's Response to Question 3:

The electrical penetrations are tested in groupings by elevation. The electrical penetrations in question are part of the overall groupings categorized as follows:

Unit 1:

" 852-ELEC-PEN includes E-0006, E-0009, E-0016, & E-0018

  • 832-ELEC-PEN includes E-0029, E-0039, & E-0040
  • 810-ELEC-PEN includes E-0056 & E-0060 Unit 2:
  • 2-852-ELEC-PEN includes 2-E-0006, 2-E-0009, 2-E-0015, 2-E-0016, & 2-E-0018
  • 2-832-ELEC-PEN includes 2-E-0039, 2-E-0040, & 2-E-0045

" 2-810-ELEC-PEN includes 2-E-0056, 2-E-0060, & 2-E-0066 See Attachment 2 for the Local Leak Rate (Type B) Results for each grouping. There have been no previous failures for these penetrations for Unit 1 or Unit 2. The results listed in Attachment 2 are in standard cubic centimeters per minute (sccm). The administrative limit for each test is 100 sccm.

However, the Unit 1 tests performed in 1991 had an administrative limit of 25 sccm. The two tests that exceeded 25 sccm had a technical evaluation performed which documented the acceptability of the test results via Technical Evaluation (TE) 91-2683.

ATTACHMENT 2 to TXX-12162 Local Leak Rate (Type B) Results

NMMLR07 TU ELECTRIC Page: 1 of CPSES LOCAL LEAK RATE TEST Date : 11/06/2012 Past Performance History Report Time: 13:32:19 Unit/ Pene. No  : 852-ELEC-PEN SystemlService: ELEC. PEN ASSY Procedure  : OPT-860A/ RT 504952 Current Interval : 3660 sf j Test Type C

ý,; U rM3 ,9; ý0*'( Passed

1,.0
  • .*:,,*'*:,:Pene. Status P Left:. :;*91.=,3j, (Ab .;, Next Test Due  : 10/29/2015 Valve/Boundary : 852-ELEC-TC Inside/Oustide *Outside Concurrently Tested Valve(s)/Boundary(s) Admin. Limit , 100 No Related Tag(s)

Test Leak Work Order As Left Test Date Rate Number Entered? Status AS FOUND 10/21/2005 91.30 5-05-504952-AA Passed AS LEFT 10/21/2005 91.30 5-05-504952-AA Yes Passed AS FOUND 10/01/2002 2.00 5-02-504952-AA Passed AS LEFT 10/01/2002 2.00 5-02-504952-AA Yes Passed AS FOUND 03/04/1995 17.00 5-94-501651-AA Passed AS LEFT 03/04/1995 17.00 5-94-501651-AA Yes Passed AS FOUND 04/14/1993 20.00 5-92-501651-AA Passed AS LEFT 04/14/1993 20.00 5-92-501651-AA Yes Passed AS FOUND 09/12/1991 68.00 S-91-00008 -25 Passed AF Comments: SEE TE 91-2683 AS LEFT 09/12/1991 68.00 S-91-00008 -25 Yes Passed

      • ENVD OF HISTORY REPORT FOR : 852-ELEC-PEN

NMMLR07 TU ELECTRIC Page: 1 of I CPSES LOCAL LEAK RATE TEST Date : 11/06/2012 Past Performance History Report Time 13:34:16 Unit/Pene. No  : 832-ELEC-PEN SystemlService: ELEC.PEN Procedure

  • OPT-859A / RT 504951 Current Interval 3660

_ .0 Test Type C A'"u6nd(iF -

  • 2'V-*!.!*:*,* Pene. Status P AsLeft,' 1012912015JA~i
  • -,....*j *,
  • i Next Test Due  : 10/25/2015 Valve/Boundary :832-ELEC-TC Inside/Oustide Outside Concurrently Tested Valve(s)/Boundary(s) Admin. Limit  : 100 No Related Tag(s)

Test Leak Work Order As Left Test Date Rate Number Entered? Status AS FOUND 10/21/2005 20.00 5-05-504951-AA Passed AS LEFT 10/21/2005 20.00 5-05-504951-AA Yes Passed AS FOUND 02/22/2005 58.50 5-99-504951-AA Passed AS LEFT 02/22/2005 58.50 5-99-504951-AA Yes Passed, AS FOUND 03/04/1995 20.00 5-94-501376-AA Passed AS LEFT 03/04/1995 20.00 5-94-501376-AA Yes Passed AS FOUND 04/15/1993 20.00 5-92-501376-AA Passed AS LEFT 04/15/1993 20.00 5-92-501376-AA Yes Passed AS FOUND 09/13/1991 3.50 S-91-00008 -24 Passed AS LEFT 09/13/1991 3.50 S-91-00008 -24 Yes Passed

      • END OF HISTORY REPORT FOR : 832-ELEC-PEN

NMMLR07 TU ELECTRIC Page: of I CPSES LOCAL LEAK RATE TEST Date 11106/2012 Past Performance History Report Time: 13:35:32 Unit/Pene. No 810-ELEC-PEN SystemlService: ELEC. PENS.

Procedure OPT-858A / RT 504950 Current Interval : 3660

-h,1jU,*I Test Type As ,.., =.5 . .40  :*"Pene.

7r3 Status  :

Passed j*s: * .* . . Next Test Due .10/292015 Valve/Boundary  : 810-ELEC-TC Inside /Oustide  : Outside Concurrently Tested Valve(s)/Boundary(s) Admin. Limit  : 100 No Related Tag(s)

Test Leak Work Order As Left Test Date Rate Number Entered? Status AS FOUND 10/21/2005 31.00 5-05-504950-AA Passed AS LEFT 10/21/2005 31.00 5-05-504950-AA Yes Passed AS FOUND 03/01/2005 4.00 5-99-504950-AA Passed AS LEFT 03/01/2005 4.00 5-99-504950-AA Yes Passed AS FOUND 03/04/1995 20.00 5-94-500217-AA Passed AS LEFT 03/04/1995 20.00 5-94-500217-AA Yes Passed AS FOUND 04/15/1993 20.00 5-92-500217-AA Passed AS LEFT 04/15/1993 20.00 5-92-500217-AA Yes Passed AS FOUND 09/12/1991 49.00 S-91-000082-3 Passed AF Comments:SEE TE 91-2683 AS LEFT 09/12/1991 49.00 S-91-000082-3 Yes Passed

      • END OF HISTORY REPORT FOR  : 810-BLEC-PEN

NMMLR07 TU ELECTRIC Page: 1 of 1 CPSES LOCAL LEAK RATE TEST Date : 11/06/2012 Past Performance History Report Time: 13:20:53 Unit/ Pene. No  : 2-852-ELEC-PEN SystemlService : ELEC PEN Procedure OPT-860B / RT 504708 CurrentInterval : 1830 Test Type . C ArSA5,ý7'i Mi i ,P  :* As Eound'*:**:F ) Pene. Status P a ss e d a';*;*!* ;*7 00"

(*i Next Test Due  : 09/25/2017 Valve/Boundary 2-852-ELEC-TC Inside /Oustide

  • Outside Concurrently Tested Valve(s)/Boundary(s) Admin. Limit  : 100 No Related Tag(s)

Test Leak Work Order As Left Test Date Rate Number Entered? Status AS FOUND 09/21/2012 71.00 -- 444939-1 Passed AS LEFT 09/21/2012 71.00 -- 444939-1 Yes Passed AS FOUND 07/30/2009 20.00 -- 350413-7 Passed AS LEFT 07/30/2009 20.00 -- 350413-7 Yes Passed AS FOUND 04/21/2005 78.00 5-05-504708-AA Passed AS LEFT 04/21/2005 78.00 5-05-504708-AA Yes Passed AS FOUND 04/02/2002 20.00 5-02-504708-AA Passed AS LEFT 04/02/2002 20.00 5-02-504708-AA Yes Passed AS FOUND 01/02/2001 20.30 5-99-504708-AA Passed AS LEFT 01/02/2001 20.30 5-99-504708-AA Yes Passed AS FOUND 02/25/1996 11.76 5-95-501368-AA Passed AS LEFT 02/25/1996 11.76 5-95-501368-AA Yes Passed AS FOUND 10/09/1994 7.80 5-94-501368-AA Passed AS LEFT 10/09/1994 7.80 5-94-501368-AA Yes Passed

      • END OF HISTORY REPORT FOR : 2-852-BLEC-PEN

NMMLF.07 TU ELECTRIC Page: 1 of 1 CPSES LOCAL LEAK RATE TEST Date 11/06/2012 Past Performance History Report Time: 13:25:06 Unit/Pene.No  : 2-832-ELEC-PEN System/Service : ELEC PEN Procedure  : OPT-859B CurrentInterval : 1830

-hf Rath,, 7 aMixiffi t Test Type :C

" 3. 0 Pene. Status  : Passed

-i l*e*f' 'AI~. '*$*Next Test Due  : 09/25/2 017 Valve/Boundary  : 2-832-ELEC-TC Inside /Oustide

  • Outside Concurrently Tested Valve(s)/Boundary(s) Admin. Limit 100 No Related Tag(s)

Test Leak Work Order As Left Test Date Rate Number Entered? Status AS FOUND 09/21/2012 53.00 -- 442849-1 Passed AS LEFT 09/21/2012 53.00 -- 442849-1 Yes Passed AS FOUND 06/27/2009 96.00 -- 350324-2 Passed AS LEFT 06/27/2009 96.00 -- 350324-2 Yes Passed AS FOUND 04/20/2005 84.00 5-03-504698-AA Passed AS LEFT 04/20/2005 84.00 5-03-504698-AA Yes Passed AS FOUND 12/01/2000 50.00 5-99-504698-AA Passed AS LEFT 12/01/2000 50.00 5-99-504698-AA Yes Passed AS FOUND 02/24/1996 19.40 5-95-502014-AA Passed AS LEFT 02/24/1996 19.40 5-95-502014-AA Yes Passed AS FOUND 10/08/1994 14.00 5-94-502014-AA Passed AS LEFT 10/08/1994 14.00 5-94-502014-AA Yes Passed

      • END OF HISTORY REPORT FOR : 2-832-BLEC-PEN

NMMLR07 TU ELECTRIC Page: I of 1 CPSES LOCAL LEAK RATE TEST Date 11106/2012 Past Performance History Report Time: 13"27:01 Unit/ Pene. No  : 2-810-ELEC-PEN System/Service : ELEC PEN OPT-858B/ RT 504697 Procedure Current Interval : 1830

  • C Test Type Pene. Status  : Passed Next Test Due :09/30/2017 Valve/Boundary  : 2-810-ELEC-TC Inside / Oustide
  • Outside Concurrently Tested Valve(s)/Boundary(s) Admin. Limit  : 100 No Related Tag(s)

Test Leak Work Order As Left Test Date Rate Number Entered? Status AS FOUND 09/26/2012 55.50 -- 443028-4 Passed AS LEFT 09/26/2012 55.50 -- 443028-4 Yes Passed AS FOUND 06/30/2009 74.50 -- 350321-4 Passed AS LEFT 06/30/2009 74.50 -- 350321-4 Yes Passed AS FOUND 04/20/2005 77.40 5-03-504697-AA Passed AS LEFT 04/20/2005 77.40 5-03-504697-AA Yes Passed AS FOUND 12/16/2000 85.00 5-99-504697-AA Passed AS LEFT 12/16/2000 85.00 5-99-504697-AA Yes Passed AS FOUND 02/25/1996 15.62 5-95-500059-AA Passed AS LEFT 02/25/1996 15.62 5-95-500059-AA Yes Passed AS FOUND 10/09/1994 23.40 5-94-500059-AA Passed AS LEFT 10/09/1994 23.40 5-94-500059-AA Yes Passed

      • END OF HISTORY REPORT FOR : 2-810-ELEC-PEN
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