TXX-4262, Forwards Response to Addl Questions Re Protective Coating Allegations 15,31 & 33,per NRC 840727 Memo.Response to All Addl Questions Complete

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Forwards Response to Addl Questions Re Protective Coating Allegations 15,31 & 33,per NRC 840727 Memo.Response to All Addl Questions Complete
ML20138P334
Person / Time
Site: Comanche Peak, 05000000
Issue date: 08/21/1984
From: Fikar L
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To: Ippolito T
NRC - COMANCHE PEAK PROJECT (TECHNICAL REVIEW TEAM)
Shared Package
ML20138M609 List: ... further results
References
FOIA-85-59 TXX-4262, NUDOCS 8511070066
Download: ML20138P334 (10)
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. . . 5 7'.f.'.".^." .. . . ,, August 21, 1984 TXX-4262 Dockets: 50-445 50-446 Mr. Thomas A. Ippolito Froject Director for Comanche Peak Bivision of Licensing U.S. Nuclear Regulatory Commission Washington, D.C. 20555 COMANCHE PEAK STEAft ELECTRIC STATION UNITS 1 AND 2 ADDITIONAL 00ESTIONS RELATIVE TO PROTECTIVE C0ATINGS ALLEGATIONS FILE NO. 906.1, 10010

Dear ifr. Ippolito:

Attached to protective findcoating our detailed response allegctions No.'s to15, your 31additional and 33 as(cuestions fonnalizedrelative in your memorandum of July 27,1984). This comoletes our written resoonses to all of these additional cuestions.

Please let us know if we can provide any additional information.

Sincerely, R vig L.F.Fiar

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TXX-4262 -

' August 21 , 1984 QUESTIONS RELATIVE TO ALLEGATION NO. 15 a) What is the size of the total surface area having this coating system (Inorganic zine over organic topcoat)?

b) Explain the basis for this total surf ace area number.

c) Are these areas entered in the coatings exemption log? Identify the NCR/DCA that covers these items.

d) We have reviewed a Request for Information or Clarification (RFIC), dated 10/20/83 that authorizes the use of the inorganic zine top over epoxy. We have also reviewed an earlier RFIC, dated 01/07/83 that does not permit zine to be applied over epoxy. What is the engineering justification for this change in requirements?

e) Has inorganic zine actually been applied over epoxy in overlap areas? If so, identify the applicable IR's.

Response

a) The available data does not permit a precise estimate of the area involved.

However, we have performed a sample review of the existing data on the Unit 1 liner plate. Based on certain assumptions necessary to calculate total area, the surface area involved ranges from about 2500 to 6500 square feet.

The lower value is realistic and the upper value is considered conservative.

b) The basis for this estimate was a statistically sound sampling of primer repair records. Assumptions made included:

1) Overlap at the edge of the repair area was 1.5 inches;
2) Each 100 ft. area of the liner experienced an average of about 5.5 repairs; and
3) Siae of the individual repair areas ranged from 1 to 3 square feet.

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' August 21, 1984 QUESTIONS RELATIVE TO ALLEGATION NO. 15 c) No d) The referenced RFIC's were addressing degree of overlapping coating systems.

In a repair area, there is not a well defined separation between topcoat 6 primer and substrate. Within the repair area, there is a " feathered" area which has inorganic zine applied over topcoat.

el All primer repairs will probably contain areas where inorganic zine was applied over epoxy. Inspection records of primer repair areas are available for review.

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TXX-4262 August 21. 1984 QUESTIONS RELATIVE TO ALLEGATION NO. 31 a) Provide location of records identifying limited access and inaccessible areas.

b) Provide total area of identified limited access and inaccessible areas.

Explain the basis for this estimate.

c) Indicate the level of supervision that is authorized to determine whether an area is limited access or inaccessible.

Response

a) Some inspection reports (IR's) and Travelers reference inaccessible or limited access areas.

b) Total areas are estimated as follows:

Coated Surface Estimated Area (FT )

Inaccessible Liner 1400 Concrete 106J Miscellaneous Steel 1000 Limited Access Liner . 200 Concrete 1000 Miscellaneous Steel 1500 The above figures were based on the combined input from four esperienced i

coating (field) engineers / technicians and are considered to be consorystive.

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TXX-4262

' August 21, 1984 QUESTIONS RELATIVE TO ALLEGATION NO. 31 c) Certified QC inspectors, Quality Engineers, or Coatings Engineers are authorized to make this determination.

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' August 21, 1984 QUESTIONS RELATIVE TO ALLEGATION NO. 33 Provide names, qualification dates and levels, and assignment dates for all tedividuals who were assigned as lead inspectors or in other quality supervision functions for coatings since January 1982.

Response

NOTE: See attached Table of Contents from Protective Coatings Inspection Manual for identification of inspection functions.

William S. Avery - Assignment Date March 1982 - January 1983 QI-QP-11.4-1/11.4-5 (Certified 12/15/81, Level 1)

Q1-QP-11.4-23/11.4-24 (Certified 03/08/82, Level I)

QI-QP-11.4-10 (Certified 03/08/82, Level 1)

William Dunham - Assignment Date: February 1983 - August 1983 QI-QP-11.4-1/11.4-5 (certified 12/28/81, Level 1)

QI-QP-11.4-10 (certified 03/31/82 Level I)

Q1-QP-11.4-23/11.4-24 (Certified 06/25/82, Level I)

Nike E. Foote - Assignment Date September 1983 - December 1983 tivil Level III (Certified 02/18/82)

Deerett Mouser _ - Ass 1& nnent Date August 1983 - October 1983 Bo Protective Coatings Certifications 3

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TXX-4262

' August 21, 1984 QUESTIONS RELATIVE TO ALLEGATION NO. 33 Robert Wallace - Assignment Date: March 1982 - May 1983 QI-QP-11.4-23/11.4-24 (Certified 03/08/82, Level I)

QI-QP-11.4-10 (Certified 03/08/82, Level I)

QI-QP-11.4-1/4-5 (Cert ified 03/08/82, Level I)

Harry Williams - Assignment Dater January 1982 - August 1983 Civil Level III (Certified 08/03/81)

Neil Britton - Assignment Dates March 1982 - February 1983 .

and October 1983 - May 1984 QI-QP-11.4-1/11.4-5 (Certified 11/25/81, Level I)

QI-QP-11.4-23 (Certified 11/25/81, Level I)

QI-QP-11.4-10 (Certified 02/09/82, Level 1)

QI-QP-11.4-24 (Certified 02/09/82 Level I)

Q1-QP-11.4-26/11.4-27 (Certified 01/03/84, Letter)

Q1-QP-11.4-29 (Certified 03/13/84, Level I)

CP-QP-11.4 (Certified 04/27/84, Level II)

Protective Coatings Level III (Certified 05/04/84) 44 9

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l' l i TXX-4262 4 r j ' August 21, 1984  !

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! QUESTIONS RELATIVE TO ALLEGATION NO. 33 I  !

I David Ambrose - Assignment Date: February 1984 - Present

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l QI-QP-11.4-23/11.4-24 (Certified 01/18/83, Level I) f j QI-QP-11.4-1/11.4-5 (certified 03/31/83 Level I) (

{ QI-QP-11.4-10 (Certified 06/08/83 Level I) f

{ QI-QP-11.4-26/11.4-27 (Certified 01/03/84 Letter) [

I i QI-QP-11.4-29 (Certified 03/13/84 Level 1)

CP-QP-11.4/ Daughter Instr. (Certified 05/17/84, Level II) l Fred Dunham - Assignment Dater July 1982 to March 1984 l

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QI-QP-11.4-1/11.4-5 (certified 05/12/82, Level I)

QI-QP-11.4-10 (Certified 05/14/82 Level I)

) QI-QP-11.4-23/11.4-24 (Certified 06/03/82, Level I)  ;

j QI-QP-11.4-26/11.4-27 (Certified,01/03/84 Letter) l QI-QP-11.4-29 (Certified 03/13/84 Level I)

CP-QP-11.4/ Daughter Inst. (Certified 04/02/84, Level II) f t l Protective Coatinse (Certified 04/02/84, Level III) f

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Jim Wren - Assignment Date: April 1984 to Present l

) QI-QP-11.4-26 (Certified 02/02/84, Level 1)  ;

l QI-QP-11.4-27 (Certified 02/10/84, Level 1) I

} CP-QP-11.4/ Daughter Inst. (Certified 05/17/84, Level II) l 1

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-_____ _ - _ -____ ___ - -_____-____ _ ______ _ - __-____ - _-____ n _ -____- __-_____ _ _ _ _ _ _ _ _ _ _ _

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TXX-4262 August 21, 1984 QUESTIONS RELATIVE TO ALLEGATION NO. 33 Gary Yando - Assignment Date: September 1983 to Present JI-QP-11.4-1/11.4-5 (Certified 05/06/82 Level 1) t'I-QP-11.4-23/11.4-24 (Certified 05/06/82 Level I)

QI-QP-11.4-10 (Certified 05/14/82, Level I)

QI-QP-11.4-26/11.4-27 (Certified 01/03/84, Letter)

CP-QP-11.4/ Daughter Inst. (Certified 06/07/84, Level II)

QI-QP-11.4-29 (Certified 07/12/84, Level II)

Joy Underwood - Assignment Date: June 1984 to Present QI-QP-11.4-1/11.4-5 (certified 01/24/83 Level 1)

QI-QP-11.4-10 (Certified 01/24/83 Level I)

QI-QP-11.4-23/11.4-24 (Certified' 01/24/83 Level 1)

QI-QP-11.4-26/11.4-27 (Certified 01/03/84, Letter)

QI-QP-11.4-29 (Certified 03/28/84. Level 1)

CP-QP-11.4/ Daughter Inst. (Certified 06/07/84, Level II)

James Uehlien - Assignment Date: January 1984 to Present QI-QP-11.4-23/11.4-24 (Certified 07/26/83, Level 1)

QI-QP-11.4-1/11.4-5 (Certified 08/05/83 Level I)

QI-QP-11.4-26 (Certified 01/03/84, Letter)

CP-QP-11.4/Dau8hter Inst. (Certified 05/17/84, Level II)

QI-QP-11.4-29 (Certified 07/12/84, Level II)

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Y TXX-4262 August 21, 1984 QUESTIONS RELATIVE TO ALLEGATION NO. 33 M.G. Krisher - Assignment Date: September 1983 to Present Protective Coatings (Certified 09/08/83, Level III)

C.C. Randall - Assignment Date: June 1982 to September 1983 No Protective Coatings Certifications Mickey Finn - Assignment Date: August 1983 to Present QI-QP-11.4-10 (Certified 03/08/82, Level I)

QI-QP-11.4-1/11.4-5 (Certified 03/08/82, Level I)

QI-QP-11.4-23/11.4-24 (Certified 03/08/82, Level I)

QI-QP-11.4-26/ll.4-27 (Certified 01/03/84 Letter)

CP-QP-11.4/ Daughter Inst. (Certified 06/07/84, Level II)

QI-QP-11.4-29 (Certified 07/12/84, Level II)

/;;i Wolverton - Assignment Date: October 1983 - February 1984 No Protective Coatings Certifications Paul Leyendecker - Assignment Date: April 1984 to July 1984 QI-QP-II.4-26 (Certified 02/02/84, Level 1)

QI-QP-11.4-27 (Certified 02/10/84, Level I)

CP-QP-11.4 and Daughter Instr. (Certified 06/07/84, Level 11)

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