ML20137N368

Part 21 & Final Deficiency Rept,Item 214 Re Inadequate Ventilation in Generator Control Panels Supplied by Tdi. Initially Reported on 850507.Cooling Fans Supplied by RTE-Delta Installed in Control Panels

ML20137N368
Person / Time
Site:	Harris
Issue date:	11/15/1985
From:	Watson R CAROLINA POWER & LIGHT CO.
To:	Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
CON-NRC-399, REF-PT21-85, REF-PT21-85-485-000 (NRC-85-1066), 214, MS-850472-(), MS-850472-(0), PT21-85-485, PT21-85-485-000, NUDOCS 8512040110
Download: ML20137N368 (4)

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1. 1 SHEARON HARRIS NUCLEAR PROJECT P. O. Box 165 New Hill, North Carolina 27562 NOV 1.51995 NRC-399 File Number: SHF/10-13510E Letter Number: MS-850472 (0)

Dr. J. Nelson Grace United States Nuclear Regulatory Commission Region II 101 Marietta Street, Northwest (Suite 2900)

Atlanta, Georgia 30323 CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT 1986 - 900,000 KW - UNIT 1 STANDBY DIESEL CENERATOR - CONTROL PANEL VENTILATION, ITEM 214

Dear Dr. Grace:

Attached is our final report on the subject item which was deemed reportable per the provisions of 10CFR50.55(e) and 10CFR, Part 21 on May 7, 1985. With this report, Carolina Power & Light Company considers this matter closed.

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

Yours very truly, 8512040110 851115 [ h PDR ADOCK 05000400 R. A. Watson S PDR Vice President Shearon Harris Nuclear Power Plant RAW /cwj ,

Attachment ec: Messrs. C. Maxwell (NRC-SHNPP)

J. M. Taylor (NRC)

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'e CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT UNIT NO.1 FINAL REPORT STANDBY DIESEL CENERATOR CONTROL PANEL VENTILATION (NCR 85-1066)

ITEN 214 NOVEMBER 15, 1985 REPORTABLE UNDER 10CFR50.55(e) and 10CFR21 l

l NBI-MS-854027/2-OSS

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SUBJECT:

Shearon Harris Nuclear Power Plant - Unit No. I 10CFR50.55(e) and 10CFR21 Reportable Deficiency.

Control Panel Ventilation for Emergency Diesel Generator sets supplied by Transamerica Delaval Inc.

under Purchase Order NY-435079.

ITEM: Generator Panels have inadequate ventilation.

SUPPLIED BY: Transamerica Delaval Inc., Oakland, California. The Generator Control Panels are manufactured by RTE-Delta.

MATURE OF DEFICIENCY: Transamerica Delaval, Inc., (TDI) shipped two diesel generator sets to the Shearon Harris site in May and June, 1981. On March 12, 1985, CP&L sent a letter to TDI questioning the reportability of a design change due to an apparent lack of ventilation in the RTE Delta generator control panels.

Based upon a preliminary telephone response to this letter, NCR 85-1066 was generated. After reviewing the available information, CP&L Engineering determined that inadequate ventilation was provided for the generator control panels. This would result in qualified component temperature limits being exceeded and possible failure of those components. .

DATE PROBLEM OCCURRED: Refer to section above.

DATE PROBLEM REPORTED On May 7, 1985, CP&L (N. J. Chiangi) notified the NRC (Mr. A. Hardin) that this item was reportable per the provisions of 10CFR50.55(e) and 10CFR, Part 21.

SCOPE OF PROBLEM: The problem involves the two generator control panels shipped for Unit 1 under Order No. NY-435079.

SAFETY IMPLICATION: The diesel generators supply power to the ESF buses in case of a loss of both normal on-site and off-site power sources. If key components in the generator control panel were to fail, a loss of on-site standby power would occur.

NBI-MS-854027/3-0S5

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SUBJECT:

Shearon Harris Nuclear Power Plant -

Unit No. 1 10CFR50.55(e) and 10CFR21 Reportable Deficiency.

Control Panel Ventilation for Emergency Diesel Generator sets supplied by Transamerica Delaval Inc.

under Purchase Order NY-435079.

ITEM: Cenerator Panels have inadequate ventilation.

-SUPPLIED BY: Transamerica Delaval Inc., Oakland, California. The Generator Control Panels .are manufactured by RTE-Delta.

l MATURE OF DEFICIENCY: Transamerica Delaval, Inc., (TDI) shipped two diesel generator sets to the Shearon Harris site in May and June, 1981. On March 12, 1985, CP&L sent a letter to TDI questioning the reportability of a design change due to an apparent lack of ventilation in the RTE Delta generator control panels.

Based upon a preliminary telephone response to this letter, NCR 85-1066 was generated. After reviewing the available information, CP&L Engineering determined that inadequate ventilation was provided for the generator control panels. This would result in qualified component temperature limits being exceeded and possible failure of those components.

DATE PROBLEM OCCURRED: Refer to section above.

D4TE PROBLEM REPORTED On May 7, 1985, CP&L (N. J. Chiangi) notified the NRC (Mr. A. Hardin) that this item was reportable per the provisions of 10CFR50.55(e) and 10CFR, Part 21.

SCOPE OF PROBLEM: The problem involves the two generator control panels shipped for Unit i under Order No. NY-435079.

SAFETY IMPLICATION: The diesel generators supply power to the ESF buses in case of a loss of both normal on-site and off-site power sources. If key components in the generator control panel were to fail, a loss of on-site standby power would occur.

NBI-MS-854027/3-0S5 A

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REASON DEFICIENCY IS REPORTABLE: If left uncorrected, failure of the generator control panel would lead to loss of the ability to supply emergency power.

CORRECTIVE ACTION: . Cooling fans supplied by RTE Delta have been installed in the control panels per Field Change Requests M-1729 Rev. O, E-5147 Rev. I and I-2269 Rev. O. In addition, thermal monitoring during a test run was performed on Panel 1A per the TDI owner's group DR/QR Report for SHNPP which indicated temperatures within the allowable range. With the installation of the referenced cooling fans this item is considered resolved.

NBI-MS-854027/4-OS5