ML20076J563
| ML20076J563 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 08/30/1983 |
| From: | Parsons R CAROLINA POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| CON-NRC-110, REF-PT21-83-010-000 10CFR-50.55E, PT21-83-010-000, PT21-83-10, NUDOCS 8309070239 | |
| Download: ML20076J563 (4) | |
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USNRcRF3IGI42 ATtI F A.'
g prol&nhdwN U Light Company P. O. Box 101, New Hill, N. C. 27562 August 30,1983 Mr. James P. O'Reilly NRC-110 United States Nuclear Regulatory Commission Region II 101 Marietta Street, Northwest (Suite 2900)
Atlanta, Georgia 30303 CAROLINA POWER & LIGHT COMPANY SIIEARON HARRIS NUCLEAR POWER PLANT 1986 900,000 KW - UNITS 1 & 2 WELD DEFICIENCIES IN UNIT 1 ClilLLED WATER VALVE, PURCHASE ORDER NY-435176, ITEM 127
Dear Mr. O'Reilly:
Attached is our second interim report on the subject item which was deemed reportable per the provisions of 10CFR50.55(e) and 10CFR, Part 21, on May 5,1983. CP&L is pursuing this matter, and it is currently projected that corrective action and submission of the final report will be accomplished by October 31,1983.
Thank you for your consideration in this matter.
Yours very truly, R. M. Parsons to-5/00 Project General Manager Shearon Harris Nuclear Power Plant RMP/sh Attachment ec:
Messrs. G. Maxwell /R. Prevatte (NRC-SIINPP)
Mr. R. C. DeYoung (NRC) tTd Ji-8309070239 830830 PDR ADOCK 05000400 S
PDR l
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,r CAROLINA POWER & LIGHT COMPANY.
SHEARON HARRIS NUCLEAR POWER PLANT' UNIT NO. 1 WELD DEFICIENCIES IN UNIT'l CHILLED WATER VALVE ITEM 127 INTERIM REPORT AUGUST 31, 1983 RETORTABLE UNDER 10CFR50.55(e) AND 10CFR21
e SUBJECT She ran Harris Nuclear-Powzr Pitnt Unit No. 1 10CFR50.55(e) and 10CFR Part 21 reportable weld deficiencies in three-way chilled water valve purchased under Purchase Order NY-435176, Item 168.
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 OHr. 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.
On May 5, 1983, Mr. N. J. Chiangi notified the NRC (Mr. 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.
SCOPE OF
_ PROBLEM The deficiency involves loss of safety-related chilled water.
SAFETY 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
. DEFICIENCY' IS REPORTABLE Failure of the valve could-result' in the reduction.of.
cooling.to' Safety Train "B" Air Handling Units. No means of automatic isolation in vicinity of" deficiency; therefore,
- some "B" train is sacrificed.
Incorporating' additional' single-failure criterion (loss of ~ Safety Train ' A), the environmental. qualification of essential components could potentially be jeopardized ~due to exceeding the allowable operating temperature.
CORRECTIVE ACTION
' Valve was shipped back to the vendor for repair.
PREVENTATIVE p_
MEASURE Preventative measures will be by ITT Hammel Dahl. Last vendor contact was on August 26, 1983. Repair work is incomplete as of thia date due to a two week plant. shutdown and subcontracting of repair work to ITT Grinell. An extension of time is requested to allow the vendor to complete repair and preventative measures. Estimated date for receipt of preventative measures from vendor is September 23, 1983.
FINAL REPORT The final report will be issued after the valve has been repaired and preventative measures have been received from Hammel Dahl. Projected final report date is October 31, 1
1983.
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