ML20235U743
| ML20235U743 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 09/22/1987 |
| From: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Lieberman J, Murley T, Taylor J NRC OFFICE OF ENFORCEMENT (OE), Office of Nuclear Reactor Regulation, NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO) |
| References | |
| NUDOCS 8710140228 | |
| Download: ML20235U743 (2) | |
Text
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P SEP 2 21987 l
MEMORANDUM FOR:
Thomas E. Murley, Director, Office of Nuclear Reactor Regulation James M. Taylor, Deputy Executive Director for Regional Operations James Lieberman, Director, Office of Enforcement FROM:
J. Nelson Grace, Regional Administrator
SUBJECT:
ENFORCEMENT DISCRETION FOR CATAWBA NUCLEAR STATION, UNIT 2 2
DOCKET N0. 50-414 4
i The purpose of this memorandum is to document that on September 12, 1987, Duke j
Power Company (DPC) was verbally granted a 48-hour extension of time to the 1
action statement of Technical Specification (TS) 3.7.1.2, Auxiliary Feedwater System (AFW), limiting Condition for Operation (LCO) Action Statement requirements.
The TS Action Statement requires with one auxiliary feedwater pump inoperable restoration of the required auxiliary feedwater pump to operable status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least Hot Standby within the next J
6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in Hot Shutdown within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
The TS relief allowed DPC to delay the requirement to be in Hot Shutdown by 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />. This relief was granted by Region 11 per the February 27, 1987, memorandum to Regional Administrators from Harold R. Denton and James M. Taylor regarding relief from Technical Specification LCOs.
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As described in Enclosure 1, the 48 hour5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> extension was granted for the purpose of avoiding a thermal transient of the plant, while giving DPC sufficient time to replace the outboard bearing and realign the Auxiliary Feedwater System Turbine Driven Pump under hot conditions.
The two motor driven AFW pumps remained operable throughout this event.
I Prior to relief being granted, the technical issues and extent of enforcement I
discretion were discussed with L. Reyes, J. N. Grace of RII; J. Sniezek of NRR; and H. Tucker, M. McIntosh, J. Hampton of DPC.
Subsequent to granting enforcement discretion, G. Lainas, K. Jabbour of NRR; and W. Troskoski, EDO, were notified by telephone.
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l J. Nelson Grace
Enclosures:
(Seepage 2)
Contact:
T. Peebles Fts:
242-4196 hg4-8710140228 8 PDR ADOCK O
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Multiple Addressese 2
SEP 2 21987
Enclosures:
1.
DPC to NRC letter dated September 14, 1987 j
2.
NRC to DPC letter dated September 21, 1987 cc w/encis:
L. A. Reyes
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A. F. Gibson G. R. Jenkins V. Brownlee i
T. Peebles W. Troskoski, EDO G. Lainas, NRR K. Jabbour, NRR'-
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J. Sniezek, NRR bec w/encis:
.NRC Resident Inspector Document Control Desk State of North Caroline i
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9/32/87 9/p/87
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9/ 3 /87 9/y2/87 9/p/87
_1 ENCLOSURE 1 q
l Dtnos Powza COMPm r.o. som assee
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I september T4, 1987 U. _8. Nuclear Regulatory C9suntasion
- -Attentions Document Contt01 desk Washington, D. C. 20555 I
subject Catarba Nuclear station, Unit 2 Docket No. 50 414 Discretionary Enforcement Relief from Technical specificapton 3.7.1.2 Dear Sir This letter constitutes writte n follow-up of a request for temporary waiver of Technical Specification requirements which was made (and subsequently granted) via telecons between Duke Powe r Company personnel and members of your staff on ssptember 12, 1987. This temporary emergency relief free. compliance with tha
-Technical Specification Limiting conditions for Operation (LCC) Action statement was requested to avoid unnecos sarily forcing Catawba Unit 2 to Mode 4 (HOT SHVTDOWN) since the LCo Actior, Statement would have expired at 2255 hours0.0261 days <br />0.626 hours <br />0.00373 weeks <br />8.580275e-4 months <br /> on September 12, 1987.
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. The proposed relief request va,s the result of the Auxiliary Feedwater System Turbine Driven Pump (CAPT) indperability due to high temperature readings on the cutboard bearing. The CAPT vde declared inoparable at 2255 hours0.0261 days <br />0.626 hours <br />0.00373 weeks <br />8.580275e-4 months <br /> on September 9, 1987 and h* ode 3 (HOT STANDBY) was entered at 1315 hours0.0152 days <br />0.365 hours <br />0.00217 weeks <br />5.003575e-4 months <br /> on September 12, 1987.
Continued inoperability of the CAPT w'ithout Discretionary Enforcement would have i
required the unit to enter Node 4 (HOT SWrDOWN) by 2255 hours0.0261 days <br />0.626 hours <br />0.00373 weeks <br />8.580275e-4 months <br /> on september 12, 1987.
Duke Power Company personnel toplaced the outboard bearing and realigned the pump three times before receiving satisfactory results with regard to the bearing a temperatures. The CAPT was declared operable at 0715 hours0.00828 days <br />0.199 hours <br />0.00118 weeks <br />2.720575e-4 months <br /> on september 14.
1987.
The function of the CA system is to provide feedwater to the S/G's in the event that the Condannate/Feedwater System is lost. This* water ensures a decay haat removal path to cool the Reactor Coolant System until such time that the Residual
- t. Ibat Removal System may be operated.: Tha CA motor-driven pumps. remained operabia
- throughout this event.
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'j U. &, Nuclear Regulatory Commission '
Septeniber 14, 1987 i
Page Two
, This event posed no undue risk to the health and safety of the public.- Also, one thermalcycleonthereactedwasavoided. This has real benefits in terms of availability, component lifetime and safety.
Very truly yours, B.TA
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Hal B. Tucker RWO/119/abn Attachment xes Dr. J. Nelson Grace, Regional Administration U. 3. Nuclear Regulatorf Commission
' Region II 101 Marietta Street, NW Suite 2900 i
Atlanta, Georgia 30323 Mr. P. E. Van Doorn NRC Resident Inspector Catawba Nuc1,sar Station I
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'/f ENCLOSURE 2 P Ctog UNIT ED 5TATES E
in NUCLEAR REGULATORY COMMISSION gev
. REGION 11 g-j 101 MARIETTA STREET,N.W.
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ATLANTA, GEORGI A 30323
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SEP 21 1987 Docket'No. 50-414 License No. NPF-52 Duke Power Company ATTN: 'Mr. H. B.-Tucker, Vice President
. Nuclear Production Department 422 South Chuid. Street Charlotte ~, NC 28242 Gentlemen:
SUBJECT:
ENFORCEMENT DISCRETION FOR CATAWBA NUCLEAR STATION, UNIT 2, DOCKET NO. 50-414 This letter acknowledges your letter of September 14, 1987, requesting relief from the Action Statement of Technical Specification 3.7.1.2 Auxiliary Feedwater System.
In your telephone conversations with the Region 11 staff on September 12, 1987, you were informed that discretionary enforcement action would be granted to extend the referenced action statement 48. hours.
Should you have any questions regarding this letter, please contact us.
Sincerely,
+W J. Nelson Grace Regional Administrator i
cc:
J. W. Hampton, Station Manager Senior Resident Inspector - McGuire syf5^S sy.
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