ML20108C950
| ML20108C950 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 09/26/1984 |
| From: | Parsons R CAROLINA POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| CON-NRC-275, REF-PT21-84 152, NUDOCS 8411190146 | |
| Download: ML20108C950 (4) | |
Text
s CD&L Carolina Power & Light Company M 0CT+. i. uy P. O. Box 101, New Hill, NC 27562 September 26, 1984 Mr. James P. O'Reilly NRC-275 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 PACIFIC SCIENTIFIC SNUBBERS MODELS PSA-1 AND PSA-3, ITE1 152
Dear M". O'Reilly:
Attached is our third interin report on the subject item which was deemed reportable per the provisions of 10CFR50.55(e) and 10CFR, Part 21, on November 8, 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 January 23, 1985.
Thank you for your consideration in this matter.
Yours very truly, f::&
R. M. Parsons Project General Manager Shearon Harris Nuclear Power Plant RMP/j ed Attachment cc: Messrs. G. Maxwell /R. Prevatte (NRC-SHNPP)
Mr. R. C. DeYoung (NRC) 841119c146 840926 DR ADOCK 05000400 OFFICIAL COPY PDR
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' CAROLINA POWER & LIGHT COMPANY _
i SHEARON.; HARRIS NUCLEAR POWER PLANT l
UNIT NO.-1 THIRD INTERIM REPORT f
___ _m PACIFIC SCIENTIFIC SNUBBERS MODELS PSA-1 AND PSA ITEM 152 SEPTEMBER 26, 1984 i
REPORTABLE UNDER 10CFR50.55(e)
REPORTABLE UNDER 10CFR21 2
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SUBJECT:
- Shearon Harris Nuclear. Power Plant / Unit No.-1,-
110CFR50.55(e)-and 10CFR, PartL21,' Capstan spring tang 9;
failure for mechanical 1 shock arrestors.;
ITEM:
_ Capstan-spring component in mechanical ~ shock arrestors.
SUPPLIED BY:: ' Pacific Scientific! Company, Anaheim, California.
' NATURE OF DEFICIENCY:
JIn September, 1983, Pacific Scientific? Company,'
Anaheim, California advised Southwest Frabrication' and Welding, Houston,cTexas, purchaser for CP&L, of failure of.four (4)-PSA-1-1801102-05 shock' arrestors.
Failure occurred during testing of Pacific Scientific Company's arrestors at Union Electric Callaway Staton by Daniel International: personnel. The failed-arrestors were returned to Pacific, Scientific Company where additional _ testing was performed on the. failed
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components by "Mettek", Santa Ana,' California.
.Results of the test have boen issued in Mettek Report
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~ Number PSC130911 dated September 14, 1984.
DATE PROBLEM OCCURRED:
' Purchaser _ notified by letter September 21,21983.
CP&L was notified by_ Southwest Fabrication and Welding by letter dated October 5, 1983.
DATE PROBLEM REPORTED:
November.8, 1983 - CP&L.(K.:V. Hate') notified the NRC (A. Hardin) that this item wa's reportable under 10CFR50.55(e) and 10CFR, Part.21.
SCOPE OF PROBLEM:
The deiiciency involhas (102). Unit 1, Type ' PSA-1 and PSA-3 mechanical shock arrestors.
SAFETY IMPLICATIONS: The mechanical shock arrestors are required to ensure that pipe movement,_ acceleration, and displacement are controlled within the design limits during a seismic event.
REASONS DEFICIENCY IS REPORTABLE: Failure of the capstan spring tang would result in failure of the shock arrestor to function properly W
during a seismic event. This would result in the potential loss of operation of seismically designed piping during e seismic event. Action is being effected by-Pacific Scientific Company with the.
spring' manufacturer.
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' CORRECTIVE
' ACTION:
Mechanical shock arrestors identified by Pacific Scientific Company as being part of the identical lot.
and in critical systems have:been returned to Pacific Scientific for replacement of capstan springs.
FINAL
'FIPORT:-
A final' report will be issued once the corrective.-
action described above is completed.
It is projected
'that the submittal date will be January 23, 1985.
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