ML20081G091

Final Deficiency Rept,Item 127 Re Weld Defects in Chilled Water Valve.Initially Reported on 830407.Vendor QC Procedure Revised.Valve Repaired.Also Reportable Per Part 21

ML20081G091
Person / Time
Site:	Harris
Issue date:	10/31/1983
From:	Parsons R CAROLINA POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
CON-NRC-134, REF-PT21-83 10CFR-050.55E, 10CFR-50.55E, 127, NUDOCS 8311040113
Download: ML20081G091 (4)

Text

- v Cp&L Carolina Power & Light Company kg r.wunn.rscrumsr--

P. O. Box 101,;New Hill, N. C. 27562 g,4 1 October 31,1983 Mr. James P O'Reilly NRC-134 United States Nuclear Regulatory Commission Region II 101 Marietta Street, Northwest (Suite 2900)

Atlanta, Georgia 30303 CAROLINA POWER & LIGHT COMPANY SHEARON HARRE NUCLEAR POWER PLANT 1986 900,000 KW - UNITS 1 & 2 WELD DEFICIENCIES IN UNIT 1 CHILLED WATER VALVE, ITEM 127

Dear Mr. O'Rellly:

Attached is the final report on the subject item which was deemed reportable per the provisions of 10CFR50.55(e) and 10CFR, Part 21, on May 5,1983. With this report, Carolina Power & Light Company considers this matter closed.

If you have any questions regarding this matter, please do not hesitate to contact me.

Yours very truly, mfc.,.e: = = ' -

R. M. Parsons Project General Manager Shearon Harris Nuclear Power Plant RMP/sh Attachment ec: Messrs. G. Maxwell /R. Prevatte (NRC-SHNPP)

Mr. R. C. DeYoung (NRC) 8311040113 831031 OFFICIAL COPY DR ADDCK 05000 y7

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CAROLINA POWER'& LIGHT COMPANY.

.SHEARON HARRIS NUCLEAR POWER PLAhT UNIT NO. 1 WELD DEFICIENCIES IN UNIT 1 CHILLED WATER VALVE ITEM 127 FINAL REPORT

' OCTOBER 28, 1983 REPORTABLE UNDER 10CFR50.55(e) AND 10CFR21

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- SUBJECT ' Shearon Harris Nuclear. Power Plant Unit No.'1 10CFR50.55(e) and 1CCFR Part 21 reportable ' weld deficiencies in three-way chilled water valve purchased under Purchase Order NY-435176, Item'168.

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ITEM . Deficiency and Disposition Report 1422; Valve-3CX-W25SB-1 was found to have vendor shop weld defects.

SUPPLIED'BY ITT 'Hammel Dahl,' Warwick, Rhode Island NATURE OF DEFICIENCY In' March 1983, the Quality Assurance Department, Shearon Harris Nuclear Power Plant,' reported lack of penetration on the -

I.D. of. vendor shop welds in the above-referenced valve.

DATE PROBLEM OCCURRED Refer to the section above.

DATE PROBLEM REPORTED - On April 7,1983, Mr. K. V. Hate' notified the NRC (Mr. A. Hardin) of a potentially reportable item per the provisions of 10CFR50.55(e) and 10CFR Part -21. The NRC was informed that an HVAC chilled water valve supplied by ITT Hammel~ Dahl was found .to have shop weld deficiencies.

Failure of the valve could result in the loss of control-  ;

room cooling.

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on May 5,1983, Mr. N. J. Chiangi notified the NFP Oir. A. Hardin) that the April 7,1983.potentially ,

reportable item concerning shop weld deficiencies in an HVAC' chilled water valve supplied by ITT~Hammel Dahl was evaluated and found to be reportable per.the provisions of 10CFR50.55(e) and 10CFR Part 21.

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- SCOPE OF.

PROBLEM The deficiency involves loss of safety-related chilled water.

t -' SAFETY

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- IMPLICATION. Loss of safety-related chilled water could'potentially jeopardize the allowable- environmental operating temperature of certain safety components and the environment envelop of'the main control room..

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REASON S'

' DEFICIENCY.

IS REPORTABLE" Failure ~of the valve could result in the reduction of 47 -cooling to Safety Train "B" Air Handling. Units. -No means

- sof automatic isolation in. vicinity of deficiency; therefore, y some "B" train

is-sacrificed.

Y Incorporating additional . single-failure criterion (loss ,

"Iof-SafetyTrainLA),theenvironmentalqualificationof

, . essential componenta could potentially be jeopardized due'

- ito exceeding the allowable operating temperature.  ;

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. CORRECTIVE _E d 1.-N . . , . .

' ACTION VValvewasshippedbackto-thependorforrepairandreceived . ,

y back at the site af ter repairs were performed on it. \'

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, y s-2 .y y PREVENTATIVE N

- MEASURE- The valve; weld deficienciiesL have been repaired by the I~

8' 7- --vendor, hydrotested, inspected and accepted by vendor.QA, g

the Authorized Nuclear Inspe.ctor and Ebasco Inspector. The valve- has .been received back yst the site. -The following is ' "

.the summary of the. preventive measures which.ITT Hammel Dahli g-Conoflow Corporation has informed.us are b'eing adopted. '

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. Vendor's QC procedure has been. revised to require more

' stringent inspections.to the weld procedures an'd' sign-off. .h Fabrication control papers have'been rewritten in a more' '

j < ' clear and's step-by-step manner which requires welder-sign-

, .off_and the' work is verified by,the shop. foreman.- Tr,.aining

-sessions.for-shop and QA/QC people were heldfto upgrade.the

-?%- level of -performance. , Written warnings have been -issued to-the responsible welder-and the QC inspector involved in' this

. specific case.

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. FINAL REPORT Thisjis the final report. CP&L considers this. subject closed, a

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