ML19340A262
| ML19340A262 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 02/08/1978 |
| From: | Parker W DUKE POWER CO. |
| To: | Case E Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19340A263 | List: |
| References | |
| NUDOCS 8001310611 | |
| Download: ML19340A262 (3) | |
Text
r REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
DISTRIBUTION FOR INCOMING MATERIAL 50-287 REC: CASE E G ORG: PARKER W O DOCDATE: 02/08/78 NRC DUKE PWR DATE RCVD: 02/13/78 DOCTYPE: LETTER NOTARIZED: YES COPIES RECEIVED
SUBJECT:
LTR 3 ENCL 40 LICENSE NO DPR-47 APPL FOR AMEND: TECH PROPOSED CHANGE CONCERNING TEMPORARY EMERGENCY EXTENSION OF ALLOWABLE TIME FOR MAINTANCE TO ALLOW CONTINUED UNIT OPERATION AT FULL PWR FOR AN ADDL 48 HOURS TO REPAZR VALVE 3BS2..NOTORIZED 02/08/78.
PLANT NAME: OCONEE - UNIT 3 REVIEWER INITIAL:
XJM DISTRIBUTOR INITIAL:
o**************** DISTRIBUTION OF THIS MATERIAL IS AS FOLLOWS ******************
NOTES:
1.
M.
CUNNINGHAM - ALL AMENDMENTS TO FSAR AND CHANGES TO TECH SPECS GENERAL DISTRIBUTION FOR AFTER ISSUANCE OF OPERATING LICENSE.
(DISTRIEUTION CODE A001)
FOR ACTION:
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NRC PDR**W/ ENCL I L E**W/2 ENCL OELD**LTR ONLY HANAUER**W/ ENCL CHECK **W/ ENCL EISENHUT**W/ ENCL SHAO**W/ ENCL BAER**W/ ENCL BUTLER **W/ ENCL GRIMES **W/ ENCL J COLLINS **W/ ENCL J.
MCGOUGH**W/ ENCL EXTERNAL:
LPDR'S WALHALLA. SC**W/ ENCL TIC **W/ ENCL NSIC**W/ ENCL ACRS CAT B**W/16 ENCL 8001310 db//
DISTRIBUTION:
LTR 40
. ENCL 39 CONTROL NBR:
!Qill0.43 SIZE: 2P+1P
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THE END
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Mr. Edson G. Case, Acting' Director n,,
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Washington, D. C.
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Oconee Unit 3 Docket No. 50-287
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Dear Mr. Caae:
Technical Spec.ification 3.3.4 requires tho trains of Reactor Building
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spray to be operable. Valve 3BS2 failed a surveillance test in that it failed to operate.
This made one train of Reactor Building spray inoperable. At the'end of the allowed 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> maintenance period, the valve was not repaired.
It is expected to be repaired by 6 p.m.,
February 9, 1978. An emergency temporary extension.of the allowable time for maintenance is requested to allow continued unit operation at full power for an additional 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> to repair valve 3BS2.
This extension is considered reasonable in that the redundant 'eactor R
Building spray train was verified op.erable and all containment cooling systems are operable.
The unit is considered to be protected under all accident conditions. By-Standard Technical Specifications for Babcock and Wilcox Pressurized Water Reactors, one Reactor Building spray system train is authcrized to be inoperable for periods up to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.
Additionally, an analysis.was performed and submitted as Supplement 13 to the FSAR which states in part that without Reactor Building spray and only two coolers operable, a maximum building pressure of 53.8 psig was obtained." This maximum pressure is below the design
. pressure of the Containment Building.
The Nuclear Safety Review Board-reviewed this proposal and approved it based on review of the FSAR, Standard Technical Specifications, and the probability.of an'accidene. occurring during the extension period requested is very:small.
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Mr. Edson G. Case Page 2
' February 8, 1978 NILLIAM O. PARKER,'JR.,'being duly sworn, states that he is Vice President of Duke' Power Company; that he is authorized on the part of said Company to sign and file with the Nuclear Regulatory Commission-this request for.
amendment of the Oconee Nuclear Station Technical Specifications, Appendix A'to Facility Operating Licenses DPR-38, DPR-47 and DPR-55; and that all statements.and matters set forth therein are true and. correct to the best
- of h s knowledge..
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William O. Parker, Jr.V Vice President Subscribed and sworn to before me this 8th day of February, 1978.
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Notary Public My Commission Expires:
Februarv 15,- 1982
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