ML19340A158

Requests Exemption from App H to Permit Operation W/Matl Surveiiance Specimens Removed from Reactor Vessel.Proposed Tech Specs 4.210 Encl

ML19340A158
Person / Time
Site:	Oconee
Issue date:	09/24/1976
From:	Parker W DUKE POWER CO.
To:	Rusche B Office of Nuclear Reactor Regulation
Shared Package
ML19340A159	List: ML19340A158 ML19340A160
References
NUDOCS 8001100625
Download: ML19340A158 (4)

Text

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NRC DISTRIBUTION c:R PART 50 DOCKET MATERI AL B.C. RUSCHfm FROM: DUKE POWER CO. DATE OF DOCUMENT TO: ,

.- CHARLOTTE, N.C. 9-24-76 W.O. PARKER, JR. DATE RECEIVED 9-30-76 SOTORIZED PROP INPUT FORM NUMBER OF COPLES RECEtVED QLETTED

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OCOPY OE2CRIPTION ENCLOSU RE LTR. NOTARIZED 9-24-76. . .RE THEIR 3-22,4-12 and 4-15-76 LTRS... _,

REQUEST THAT AN EXEMPTION FROM THE REQUIREMENTS OF ,

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APPENDIX H, BE GRANTED T6 H RMIT THE OPERATION ,

0F GCON~EEJ3, CYCLE 2 WITH THE REACTOR VESSEL MATERIAL SURVEILLANCE SPECIMENS REMOVED FOR THE REACTOR ACILNOWLEDGED VESSEL......... W/ ATTACHED PROPOSED TECH. SPEC.

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PIANT NAME: OCONEE # 3 a

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. .~. s Mr. Benard C. Rusche, Director  %/ < ,L Office of Nuclear Reactor Regulation [ o h V, \,. , 3 ,,

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Washington, D. C. 20555 e 9 y % +., QQ '/. V j RE: Oconee Unit 3 'Me  ?

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Dear Sir:

In letters dated March 22, April 12, and April 15, 1976, a situation was described in which the reactor vessel material surveillance specimen holder tubes for oconee Unit 3 were determined to be damaged. The reactor vessel surveillance specimens were removed, repairs were made to the holder tubes

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and analyses were performed which demonstrated the acceptability of these tubes for continued operation for the duration of Cycle 1. By letter dated 4 April 16, 1976 an exemption was granted to the requirements of Section II.

i C.2 of Appendix H to permit operation for the remainder of Cycle 1 with k the capsules removed.

During the present refueling outage the existing holder tubes are being removed from Oconee-Unit 3. However, the Babcock & Wilcox Co. redesigned tube has not been qualified for service. Installation of a holder tube on Oconee 3 during this outage is therefore not considered feasible. It is our cu rent intention to either install new holder tubes on an Oconee unit next year and integrate the program for all three Oconee units, or to. combine the Oconee surveillance program with another "177 fuel assembly B&W reactor."

For Oconee 3, one surveillance specimen has been withdrawn with an equivalent exposure of 2.29 EFPY. This capsule is being analyzed as part of the reactor vessel surveillance program and will provide data for establishing the revised withdrawal schedule. At the conclusion of Oconee 3, Cycle 2, the reactor vessel exposure will be 2.03 EFFY. Thus it can be seen that there would be adequate margin between the present capsule irradiation sud the maximum

-achievable exposure at the reactor vessel' beltline at the end of Cycle 2.

Additionally, consideration of the lead factor experienced by the capsules when installed in the'new holder tubes will assure that capsula irradiation would continue to lead reactor vessel irradiation.

It is therefore requested, pursuant to 10CFR50, 550.12, that an exemption from the requirements of 10CFR50, Appendix H, Section II.e.2 be granted to permit the operation of Oconee 3, Cycle 2 with the reactor vessel material

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.Mr. Benard C. Rurche ,

-P:g2 2 Szptembar 24, 1976 surveillance specimens removed from the reactor vessel. It is also raquested, pursuant to 10CFR50, 550.90, that the Oconee Nuclear Station Technical Specif1-cations be revised to indicate this exemption. The attached proposed Technical Specification page shows this. change.

Very truly yours,

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William O. Parker, J .

MST:ge Attachment I

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Mr. Benard C. Rusche

.Page 2 September 24, 1976 WILLIAM 0. 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 for7 amendment of the Oconee Nuclear Station Technical Specifications, Appendix A to Facility Operating Licenses DPR-38, DPR-47, and DPR-55; and that all s Mtements and matters set forth therein are true and correct to the best of hi owledge.

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William'O. Parker, Jr., Vi W President ATTEST:.5T:

M, John C. Goodman, Jr. 'V Assistant Secretary Subscribedian'd swornstos beforde this.124tliaay rof< Se~ptember;-197M7-5.

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Notary Public '

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