ML17296B164

Interim Deficiency Rept Re Concrete Void in Unit Control Bldg Sump.Caused by Lack of Complete Concrete Consolidation Due to Reinforcement Steel Density.Final Rept Will Be Submitted by 810315

ML17296B164
Person / Time
Site:	Palo Verde
Issue date:	12/24/1980
From:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	Spencer G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
10CFR-050.55E, 10CFR-50.55E, ANPP-16957-BSK, NUDOCS 8101060504
Download: ML17296B164 (8)

Text

e La.-. ~ I REGULA Y INFORMATION DISTRIBUTI YSTEM (RIDS)

ACCESSION NBR: 8101060504 DOC ~ DATE: 80/12/24 NOTARIZED: NO DOCKET ¹ FACIL:STN 50 529 Palo Verde Nuclear Stationi Unit 2i Arizona Publi 0'5000529 AUTH INANE AUTHOR AFFILIATION VAN BRUNTiE.ED Arizona Public Service Co.

RECIP ~ NAME RECIPIENT AFFILIATION SPENCERgG,ST Region 5i San Francisco'eactor Construction L Engineer

SUBJECT:

Interim deficiency rept re concrete void in unit control bldg sump, Caused by lack of complete concrete consolidation due to reinforcement steel density. Final rept will be submi t ted by 810315.

DISTRIBUTION CODE.: B019S COPIES RECEIVED:LTR ENCL SIZE:

TITLE: Construction Deficiency Repor t (10CFR50 ~ 55E)

NOTES:Standardized Plant. 05000529 RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL ACTION: A/D LICENSNG 04 1 MIRAGLI A i F ~ 05 1 1 LEEgJ ~ 06 1" 1 KERRIGANi J ~ 07 1 1 INTERNALe AD/RC I/IE 17 1 1 AEOD 18 1 1 ASLBP/J ~ HARD 1 1 D/DIR HUM FAC15 1 1 DIRgDIV OF LIC 1 1 EDO L STAFF 19 1 EQUIP QUAL BR11 1 1 HYD/GEO BR 22 1 1 IKE, 09 1 LIC QUAL BR 12 1 1 Mr A 20 1 1 NRC PDR 02 1 1 OELD 21 1 REV 13 1 1 QA BR 14 1 1 REG FILE 01 1 RUTHERFORDgN ~ IEi 1 1 FV 21 1 1 EXTERNAL: ACRS 16 16 16 LPDR 03 1 1 NSIC 08 1 1 Jgy

/198'OTAL NUMBER OF COPIES REQUIRED: LTTR 40 ENCL 40

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Q a PKJC3~ Q(Q ~~&VEQIX (QCSEQEM,EKF P. 0 BOX 21666 'HOENIX, ARIZONA 6SO36 December 24, 1980 ANPP-16957-BSK/JAR U. S. Nuclear Regulatory Commission Region V Walnut Creek Plaza Suite 202 1990 North California Boulevard Walnut Creek, California 94596 Attention: Mr. G. S. Spencer, Chief Reactor Construction and Engineering Support Branch

Subject:

A 50.55(e) Potentially Reportable Deficiency Relating to a Concrete Void in Unit 2 Control Building Sump Interim Report File: 80-019-026 D.4.33.2

Reference:

Telephone Conversation between J. Eckhardt and B. S. Kaplan on November 25, 1980 (DER 80-37)

Dear Sir:

The NRC was notified of a potentially reportable deficiency in the referenced telephone conversation. At that time, it was estimated that a determination of reportability would be made within thirty (30) days.

Due to the extensive investigation and evaluation required, an interim report is attached. It is now expected that this information will be fin@ized bg, March 15, 1981, at which time a complete report will be submitted. g CC c(~5 Very truly ours<

~I-n= c .F. cU.w E. E. Van Brunt, Jr.

APS Vice President Nuclear Projects ANPP Project Manager EEVBJr/BSK:skc Attachment 8101060 509 S

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U. S. Nuclear Regualtory Commission Region V Attention: Mr. G. S. Spencer, Chief ANPP-16957-BSK/JAR December 24, 1980 gage 2 ccrc Victor Stello, Jr., Director~

Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 A. C. Gehr Snell 6 Wilmer R. L. Robb D. B. Fasnacht B. S. Kaplan W. E. Ide J. M. Allen A. C. Rogers W. H. Wilson W. G. Bingham W. J. Stubblefield R. L. Patterson R. W. Welcher R. M. Grant D. R. Hawkinson J. A. Brand

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INTERIM REPORT POTENTIAL REPORTABLE DEFICIENCY ARIZONA PUBLIC SERVICE COMPANY (APS)

PVNGS'UNIT il2 I. Potential Problem A concrete void in Unit 2 Control Building sump exists in the basemat adjacent to the West wall of the sump. The void re-.

tains water when the sump is filled and releases water when the sump is emptied; however, the size of the void has not been determined. The cause is attributed to lack of complete concrete consolidation due to reinforcement steel. density.

This condition was not found and corrected during inspection and acceptance of the concrete placement because no surface indication was apparent.

II. A roach'To and Status Of Pro osed Resolution The condition is to be repaired by chipping existing concrete from the area of the void to facilitate inspection and to determine the type and extent of concrete repair required.

Once the size and extent of the void is determined, a decision on its safety significance can be made.

III. Pro'ected Com letion of Corrective'Action and Submittal of Date of 'the"'Final Re 'ort The evaluation and necessary repair are forecast to be completed by March 1, 1981.

The final report will be submitted by March 15, 1981.

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