ML17296A996

Final Deficiency Rept Re Dowel Ommission from Concrete Wall Pours of Control Bldg.Condition Is Being Corrected Following Approved Deposition to Drill & Grout Required Dowels Into Wall Following Design Drawing Requirement

ML17296A996
Person / Time
Site:	Palo Verde
Issue date:	09/24/1980
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-16427, NCR-C-J-2076, NUDOCS 8009300355
Download: ML17296A996 (8)

Text

REGUL RY INFORMATION DISTRIBUTI SYSTEM (RIDS)

ACCESSION NBR:80093003S5 DOC ~ DATE: 80/09/24 NOTARIZED: NO DOCKET ¹ FACIL:STN-50-S29 Palo Verde Nuclear Stationi Unit 2i Arizona Publi 05000S29 AUTH'AME AUTHOR AFFILIATION VAN BRUNTrE.E. Arizona Public Service Co.

REC IP ~ NAME RECIPIENT AFFILIATION SPENCERiG ~ ST

SUBJECT:

Final deficiency rept re dowel ommissioz from concrete wall pous of contro) bldg.Condition is being corrected following approved deposition to. drill L grant required dowels into wall following design drawing requirement.

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

TITLE: Construction Deficiency Report (10CFR50.55E)

NOTES:Standardized Plant ~ 05000529 ACTION:

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INTERNAL: AD/RC I/IE

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1 EDO L STAFF 19 1 1 EQUIP QUAL BR11 1 1 HYD/GEO BR 22 1 1 I8E 09 2 2 LIC QUAL BR 12 1 1 MPA 20 1 1 NRC PDR 02 1 1 OELD 21 1 1 P REV 13 1 1 QA BR 14 1 1 EG I 01 1 1 RUTHERFORD' ~ IE 1 1

ST RDS DE V 21 1 1 EXTERNAL: ACRS 16 16 16 LPDR 03 1 1 NSIC 08 1 1

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AHIZCNA NUCLKjgg PGWFR PHQJECY Post Office Box 216~Phoenix, Arizona 86036 September 24, 1980 ANPP-16427-BSK/JAR U. S. Nuclear Regulatory Commission Region V Walnut Creek Plaza Suite 202 1990 North California Boulevard Walnut Creek, California 94596 Attention: Hr. G. S. Spencer, Chief Reactor Construction and Engineering Support Branch Subj ect: A 50.55(e) Reportable Condition Relating to Dowel Omission from Concrete Wall Pour of Unit 2 Control Building Final Report File: 80-019-026

Reference:

(1) Telephone Conversation between G. Hernandez and B. S. Kaplan on August 22, 1980 (DER 80-22)

Dear Sir:

Attached is our final written report of the reportable deficiency, under 10CFR50.55(e), referenced above.

Very truly ours E. E. Van Brunt, Jr.

APS Vice President

'uclear Projects ANPP Project Director EEVBJr/BSK:skc Attachment

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FINAL REPORT REPORTABLE DEFICIENCY 50.55(e)

ARIZONA PUBLIC SERVICE COMPANY (APS)

PVNGS UNIT //2 I. Descri tion of Deficienc Forty-four (44) No. 6 dowels were inadvertently omitted from the top of a Control Building wall at Elevation 180'Wall Pour //2J054). The nonconforming condition of the wall was discovered during the preplacement QC inspection for the roof pour. This condition is attributed to oversights by the personnel and inspectors when placing the rebar in the wall prior to the wall placement.

II. Anal sis of Safet Im lications This condition is considered to be reportable based on these considerations:

l. If not detected and corrected as indicated, the wall/roof connection could possibly ex-perience local structure failure under seismic conditions.

2. This condition required an extensive evaluation and repair procedure.

3. This condition was not detected by the normal inspection process.

III. Corrective Action The condition is being corrected following the approved NCR (No. C-J-2076) disposition to drill and grout the required dowels into the wall following the design drawing requirement.

Since DER 80-13 documented a similar situation (40 missing dowels in Unit //3 Auxiliary Building at Eleva-tion 70'), corrective action for this Unit //2 deficiency was transferred to CAR S-80-95. DER 80-13 was reported to the NRC on June 5, 1980 with a final report submitted on July 8, 1980 (Letter ANPP-15853).

In order to prevent recurrence, on September. 10, 1980 at 1:00 p.m., CAR S-80-95 was discussed at the General Super-intendents'eeting by the Project Superintendent. Quality Control'personnel were also in attendance. Emphasis was placed on correct reading of drawings and prevention of oversights in the installation of dowels.

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U. S. Nuclear Regulatory Commission Attention: Mr. G. S. Spencer, Chief ANPP-16427-BSK/JAR September 24, 1980 Page 2 cc: pictor':..Stello,=-Jr..-Director

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

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