ML20137P490
| ML20137P490 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 11/14/1985 |
| From: | Watson R CAROLINA POWER & LIGHT CO. |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| CON-NRC-400, REF-PT21-85, REF-PT21-85-474-000 220, PT21-85-474, PT21-85-474-000, NUDOCS 8512050033 | |
| Download: ML20137P490 (3) | |
Text
c' t'
3 Y
CP&L w
phrth a Power & L6ght Company HARRIS NUCLEAR PROJECT P. O. Box 165 New Hill, North Carolina 27562 cv 14195 File Number:
SHF/10-13510E NRC-400 Letter Number: HO-850471 (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 KV - UNIT 1 STANDBY DIESEL CENERATOR - CONTROL PANEL WIRING, ITEM 220
Dear Dr. Grace:
Attached is an interim report on the subject item which was deemed reportable per the provisions of 10CFR50.55 (e) and 10CFR, Part 21 on October 15, 1985. CP&L is pursuing this matter, and it is currently projected that corrective action and submission of the final report uill be accomplished by December 11, 1985.
Thank you for your consideration in this matter.
Yours very truly, BS 20 O
OC at S
Vice President Shearon Harris Nuclear Power Plant 4
RAW:cwj Attachment cc: Messrs. J. M. Taylor (NRC)
C. Maxwell (NRC - SHNPP) i NBI-OS1
) c m,
. CAROLINA POWER & LIGiff COMPANY -
~SHEARON HARRIS NUCLEAR POWER PLANT UNIT 1 FIRST INTERIM REPORT CRACKED VENDOR WIRING INSULATION IN DIESEL GENERATOR CONTROL PANELS ITEM 220 NOVEMBER 8, 1985 REPORTABLE UNDER 10CFR50.55(e)
AND'10CFR21 a
O
~ IBMD-WKKOO6-OS4~
7,-.
a,.
SUBJECT:
10CFR50.55 (e) and 10CFR21 Reportable Item Shearon Harris Nuclear Power Plant Unit 1 Wiring in Emergency Diesel Generator Control Panels ITEM:
Diesel Generator Control Panels 1A-SA & IB-SB
~ SUPPLIED BY:
Transamerica De Laval, Inc.~/ RTE Delta Corp.
NATURE OF-DEFICIENCY:
TDI notified CP&L by letter in August, 1985 that the potential exists for cracked wiring in the low level circuits of the Diesel Generator Control Panels.
DATE PROBLEM WAS CONFIRMED TO EXIST:
TDI letter to.CP&L dated August, 23, 1985 and received August 30, 1985.
Field verification that the problem exists at the Shearon Harris Nuclear Power Plant was confirmed on September 17, 1985.
PROBLEM REPORTED:
K. V. Hate' notified the NRC that this item was reportable under 10CFR50.55(e) and 10CFR21 on October 15, 1985.
SCOPE OF PROBLEM:
Investigation of this problem revealed that cracked wiring insulation did exist in some icw level wiring on both Diesel-Generator Control Panels, IAe3A and IB-SB.
SAFETY IMPLICATIONS: Cracked insulation could lead to short circuits of signal wiring toLthe diesel engine instrumentation and control circuits rendering the generator speed controls inoperable.
REASON DEFICIENCY IS REPORTABLE:
Failure of engine speed controls would render the generators inoperable _for supplying emergency power.
CORRECTIVE ACTION:
Defective wiring as identified by FCR-E-5521 R/0 will be replaced.
FINAL REPORT:
Work is in progress at this time to replace de ective wiring.
It is projected that the final report will
- be submitted by December 11,.1985.
IBMD-WKCB01-0S4
,,