ML20052B916

Final Deficiency Rept Re Undersize Richmond Engineering Stiffener Ring Welds,Initially Reported on 820105. Nonconforming Units Corrected Before Leaving Manufacturer. Condition Not Reportable Per 10CFR50.55(e)

ML20052B916
Person / Time
Site:	Palo Verde
Issue date:	04/05/1982
From:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	Faulkenberry B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
10CFR-050.55E, 10CFR-50.55E, ANPP-20617-GHD, DER-81-56, DER-81-567-GHD, NUDOCS 8205040141
Download: ML20052B916 (4)

Text

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Docket Nos. 50-528/529/530 50 55(e)jp g ort in:

MM WMb fhf y $$NSY P. O. BOX 216 6 6 = PHO ENIX, ARIZON A 85036 b O:N'iApril 5, 1982 ANPP-20617-CHD/BSK U. S. Nuclear Regulatory Commission h[ \\ @l /

Region V 4

Creekside Oaks Office Park 1450 Maria Lane - Suite 210 N

Walnut Creek, California 94596-5368

.u M EO Attention:

Mr. B. H. Faulkenberry, Chief 2

VM 3198p

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Reactor Constraction and y

Engineering Support Branch y ug Q

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Subject:

Final Report - DER 81-56 A 50.55(e) Report Relating to Unit 1 Letdown Hea ifap gg y P by CE Subcontractor Richmond Engineering Had Stiffe r-Ring's Welded 1/3 of Diameter Instead of 1/2 Diameter Required by ASME Code File: 82-019-026 D 4.33.2

Reference:

(A) Telephone Conversation between Bob Dodds and George Duckworth on January 5, 1982 (B) ANPP-20079, dated February 3, 1982, Interim Report

Dear Sir:

Attached, is our final written report of the deficiency referenced above, which has been determined to be Not Reportable under the requirements of 10CFR50.55 (e).

Very truly yours CLLL SLC.C E. E. Van Brunt, Jr.

APS Vice President Nuclear Projects ANPP Project EEVBJr/GHD:skc Attachment-cc: See Attached Page 2 lES) a 82050.40l%

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r-1 U. S, Nucirag gegulstory Commission

~ Attention: Mr. B. H. Faulkenberry, Chief ANPP-20617-GHD/BSK April 5, 1982 Page 2 cc:

Richard DeYoung, Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.

20555 J. A. Roedel D. B. Fasnacht G. C. Andognini A. C. Rogers B. S. Kaplan W. E. Ide J. Vorees J. A. Brand A. C. Gehr W. J. Stubblefield W. G. Bingham R. L. Patterson R. W. Welcher R. M. Grant D. R. Hawkinson L. E. Vorderbrueggen R. L. Greenfield -

Assistant Attorney General Bataan Memorial Building Santa Fe, New Mexico 87503 Ms. Patricia Lee Hourihan 6413 South 26th Street Phoenix, Arizona 85040 i

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FINAL REPORT - DER 81-56 DEFICIENCY EVALUATION 50.55(e)

ARIZONA PUBLIC SERVICE COMPANY (APS)

PVNGS UNIT 1

-I.

Description of Deficiency During a Combustion Engineering (CE) Quality Assurance audit of Richmond Engineering Company (RECO), two letdown heat exchangers were found in violation of Paragraph NC-4437 2(b) of the ASME Boiler and Pressure Vessel Code which requires that stiffening rings be welded to the shell "...not less than one-half the out-side circumference..."

The RECO drawing called for a 2" @ 4" I

fillet weld meaning 2" of weld on 4" centers.

Evidently, the welder mistook this to mean 2" of weld with 4" spaces. The particular nonconforming units were corrected prior to leaving RECO's shop.

A subsequent field inspection of the letdown heat exchangers already shipped discovered the same condition on the Palo Verde Unit 1 equipment.

II.

Analysis of Safety' Implications APS and Bechtel concur with the attached Combustion Engineering evaluation (Letter V-CE-16036) which evaluates the condition to be Not Reportable. Had this condition remained undetected and uncorrected, it would not have represented a safety significant condition.

III.

Corrective Action Combustion Engineering under contracteto Richmond Engineering has repaired the weld.

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C E Power Systems Tel 203/688-1911 Combustion Engineenng. Inc.

Telex 99297 1000 Prospect Hill Road Windsor Conneclecut 06095

& "POWERSYSTEMS gar'd' 8f0]g82 Q

,t lir. W. G. Bingham Project Engineer Bechtel Power Corporation 12400 East Imperial Highway florwalk, California 90650

Subject:

ANPP Unit 1 Letdown Heat Exchanger 10CFR50.55(e)

References:

(A) Bechtel DER 81-56, Rev. 0 12/21/81, same subject (B) Bechtel letter B/CE-E-37917, 1/6/82, same subject

Dear Hr. Bingham:

CE has reviewed the condition destH bed in Reference (A) (Enclosure to Reference (B)) and in CE's opinis, 't is not reportable under the provisions of 10CFR50.55(e).

Furthermore it does not constitute a " substantial safety hazard" and thus would not be considered to be reportable under 10CFR21.

Had the condition remained uncorrected, and the heat exchanger were to experience a seismic event resulting in a loss of component function, the plant could have been shutdown in a normal manner because the letdnwn heat exchangers are not used in, plant shutdown.

Please note that CE Chattanooga, unocr contract to Richmond Engineering, has repaired the weld and paperwork documentation is in progress.

/hMW If you have any further questions, please feel free to inquire, qw na Al.7.O2.

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Very truly yours, Ilia 11'82

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2 C. Ferg son y, s,y Project Manager ow-Z g

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l E. E. Van Brunt, Jr.

D. B. Amerine W. L. MacDonald G. C. Andognini ce **

R. H. Holm

'AL sM 7 li. Wilson F. W. Hartley Ei Z

G. A. Butterworth p Sg' hg,q o mare S. A. Mager gg