ML20140B881
| ML20140B881 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 03/14/1986 |
| From: | Watson R CAROLINA POWER & LIGHT CO. |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| CON-NRC-427, REF-PT21-86, REF-PT21-86-101-000, REF-PT21-86-144-000 223, HO-860246-(O), NCR-85-2143, PT21-86-101, PT21-86-101-000, PT21-86-144, PT21-86-144-000, NUDOCS 8603250013 | |
| Download: ML20140B881 (3) | |
Text
_ _ _ _ _ _ _ _ _ _
t CP&L i
Carolina PoweQ,Liggompany j j b
!. Id HARRIS NUCLEAR PROJECT P. O. Box 165 New Hill, North Carolina 27562 MAR 141385 File Number:
SHF/10-13510E NRC-427 Letter Number:
HO-860246 (0)
Dr. J. Nelson Crace United States Nuclear Regulatory Commirsion Region II 101 Marietta Street, Northwest (Suite 2900)
Atlanta, 7eorgia 30323 CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT 1986 - 900,000 KW - UNIT 1 STANDBY DIESEL CENERATOR INTAKE.AND. EXHAUST; VALVE SPRINGS, ITEM 223
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 February 12, 1986. CP&L is pursuing this matter, and it is currently projected that corrective action and submission of the final report will be accomplished by June 1, 1986.
Thank you for your consideration in this matter.
1 Yours very truly, PDR R. A. Watson l
S l
Vice President l
Harris Nuclear Project RAW:jes Attachment s
cc: Messrs. C. Maxwell (NRC-SHNPP)
J. M. Taylor (NRC)
\\
CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT UNIT 1 INTERIM REPORT EMERGENCY DIESEL CENERATOR ENGINES ITEM 223 MARCH 10, 1986
. REPORTABLE UNDER 10CFR50.55(c) AND-10CFR50, Part 21 OS1
SUBJECT:
Shearon Harris Nuclear Power Plant, Unit No. 1, 10CFR50.55 (e) and 10CFR, Part 21, reportable deficiency.
Emergency diesel engine intake / exhaust valve springs.
ITEM:
Engine 1A-SA (TDI Serial No. 74046).has 4 subject springs per cylinder, except cylinder L-3 has none.
Engine 1B-SB (S/N 74047) has 2 subject springs in cylinder R-2 and 3 subject springs in cylinder R-3.
SUPPLIED BY:
Transamerica Delaval, Inc., Engine and Compressor Division, 550 85th Avenue, Oakland, CA 94621 NATURE OF DEFICIENCY:
NCR-85-2143 documents that springs manufactured by Betts Spring Company, San Leandro, CA, may have been provided. These springs have failed in commercial applications in as little as 200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br /> of operation, and failure would lead to engine inoperability. Upon inspection, springs supplied by Betts Springs Company were supplied
.as described under " Item" above.- Evaluation provided by TDI states that failure to adequately shot peen the springs resulted in failure.
DATE PROBLEM OCCURRED:
NCR-85-2143 was written November 18, 1985. This NCR was based on correspondence from TDI dated November 6, 1985.
DATE PROBLEM REPORTED On February 12, 1986, Mr. N. J. Chiangi notified the NRC (Mr. P. Fredrickson) of a reportable item per the provisions of 10CFR50.55(e) and 10CFR, Part 21.
SCOPE OF PROBLEM:
See " Item" above.
SAFETY IMPLICATION:
Failure of these springs could cause engine inoperability.
REASO.t DEFICIENCY IS REPURTABLE:
Evaluation indicates the cause of the failures to be inadequate shot peening. Since the springs cannot be nondestructively tested, we must assume that the springs supplied are deficient and failure would lead to engine inavailability.
CORRECTIVE ACTION:
The subject springs _in unit one engines will be replaced. The preoperational test schedule is being adjusted in order to accomodate spring replacement.
It is projected that a final report will be issued by June 1, 1986 OSl