ML20079S131

Revised Interim Deficiency Rept DER 83-57 Re Cracks in Control Element Assembly Shroud.Final Rept Will Be Completed by 840615

ML20079S131
Person / Time
Site:	Palo Verde
Issue date:	01/20/1984
From:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	Bishop T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
Shared Package
ML19289B841	List: ML20079S131 ML20079S138 ML20079S144
References
REF-PT21-84 DER-83-57, NUDOCS 8402030216
Download: ML20079S131 (3)

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Arizona Public Service Company Po box 21666 e PHOENIX, ARIZONA 85036 January 20, 1984 ANFP-28654-B3K/KCP U. S. Nuclear Regulatory Commission Region V Creekside Oaks Office Park 1450 Maria Lane - Suite 210 Walnut Creek, CA 94596-5368 Attention: Mr. T. W. Bishop, Director Division of Resident Reactor Projects and Engineering Programs

Subject:

Interim Report, Revision 1 - DER 83-57 A 50.55(e) Potentially Reportable Deficiency Relating to Cracks In The Control Element Assembly Shroud File: 84-019-026; D.4.33.2

Reference:

A) Telephone Conversation between P. Johnson and R. Tucker on July 29, 1983 B) ANPP-27598, dated August 19, 1983 (Interim Report)

C) ANPP-28093, dated October 26, 1983 (Time Extension)

Dear Sir:

The NRC was notified of a potentially reportable deficiency in Reference (A), an Interim Report was transmitted by Reference (B), and a Time Extension was requested by Reference (C). At that time, it was estimated that a Final Report would be available by March 9, 1984.

Due to the extensive investigation and evaluation required, a revised InteGm Report is attached. It is now expected that this information will be finalized by June 15, 1984, at which time a complete report will be submitted.

Very truly yours, f.f.U m b h E. E. Van Brunt, Jr.

APS Vice President, Nuclear ANPP Project Director EEVB/KCP:ru

Attachment:

CE Doc. No. CEN-267(V)-P, Proprietary Copy # 1 cc: See Page Two 8402030216 840120 q PDR ADOCK 05000528 S PDR %pl3l\

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Mr. T. W. Bishop DER 83-57 Page Two.

CE Doc. No. CEN-267(V)-P Proprietary Copies

.cc: _ Richard DeYoung, Director #2 Office of Inspection and Enforcement

.U. S. Nuclear Regulatory Commission Washington, D. C. 20555

.T. G. Woods, Jr. #3 J.-A. Roedel-

• D. B. Fasnacht

• A.' C._ Rogers

• B. S. Kaplan

• W. E..Ide *

<J. Vorees

• J. R. Bynum

• P. P. Klute

• A. C.'Gehr #4 W. J. Stubblefield #5 W. G. Bingham #6 R. L. Patterson #7 R. W. Welcher #8 H. Foster .. #9 D. R. Hawkinson # 10 L. E. Vorderbrueggen # 11 C. A. Fiorelli # 12 S. R.' Frost

• J..Self

• D. Canady

• Records Center

• Institute of Nuclear Power Operations 1100 circle 75 Parkway, Suite 1500 Atlanta, CA 30339-Mr. E. Licitra, Project Manager # 13 through 37 U. S. Nuclear Regulatory Commission Phillips Building 7920 Norfolk Avenue Bethesda, Maryland 20814 File: DER 83-57 # 38

• Non-Proprietary Copy Attached

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'. 5 INTERIM REPORT - REVISION 1 - DER 83-57 POTENTIAL REPORTABLE DEFICIENCY  ;

ARIZONA PUBLIC SERVICE COMPANY (APS)

PVNGS UNIT 1 I. Potential Problem Post Hot Functional Inspection of the Unit 1 Reactor Vessel revealed the following defects / discrepancies:

A. Cracks in the control element assembly (CEA) shroud sub-assemblies.

B. Chatter marks evident around the top of the support flange.

C. CEA shroud assembly appears to be shifted slightly out of position.

D. One (1) CEA guide is bowed out of shape and pressed against the shroud wall.

E. Fine layer of metal particles evident over top of the support flange.

II. Approach to and Status of Proposed Resolution Bechtel Engineering is corresponding with C-E, to provide a reportability disposition and technical j2stification for corrective action. The C-E Interim Report, " Performance Evaluation of the Palo Verde Control Element Assembly Shroud", is attached, and provides a description of the problem, inspections, tests and analyses performed to date, and corrective actions.

III. Projected Completion of Corrective Action and Submittal of the Final Report Evaluation of this condition and submittal of the Final Report is forecast to be completed by June 15, 1984.

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