ML20246B202
| ML20246B202 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 04/26/1989 |
| From: | Shelton D TOLEDO EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 1645, NUDOCS 8905080440 | |
| Download: ML20246B202 (3) | |
Text
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TOLEDO EDISON A Centeror Energy Corgey Docket Number 50-346 DONALO C. SHELTON W:E Present Numer Wem License Number NPF-3 Serial Number 1645 April 26, 1989 United States Nuclear Regulatory Commission Document Control Desk Vashington, D. C.
20555
Subject:
First and Second Ten-Year Interval Inservice Inspection and Testing Programs Gentlemen:
The purpose of this letter is to advise the Nuclear Regulatory Commission of the planned conpletion of the first ten-year interval inservice inspection (ISI) and j
testing program and the commencement of the second ten-year interval ISI and testing program for the Davis-Besse Nuclear Power Station. Toledo Edison j
advised the Nuclear Regulatory Commission (NRC) by letter dated April 29, 1983
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(Serial Number 1-339) that the end of the first ten-year interval for inservice f
examinations and tests required by 10CFR50.55a(g) was being extended to the end j
of the scheduled Spring, 1989 refueling outage. The NRC staff concurred with i
l the extension by letter dated May 18, 1983 (Log Number 1-791).
Toledo Edison provided further clarification of the interval extension by letter dated November 26, 1986 (Serial Number 1-675) and October 15, 1987 (Serial Number j
1-752). The sixth refueling outage, which was previously scheduled for Spring 1989, is now scheduled for the first quarter of 1990. The first ten-year interval completion date vill continue to correspond with the sixth refueling outage.
Toledo Edison used the provisions of IVA-2400(c) of American Society of Hechanical Engineers (ASME) Code Section XI as a basis for the original interval j
extension discussed above.
IVA-2400(c) permits power units that are continuously out of service for six months or more to extend the inspection interval during which the outage occurs for a period equivalent to the outage.
It also permits an increase or decrease of the interval by as much as one year j
to coincide with a refueling outage.
Prior to our May 18, 1983 letter, Davis-Besse had a seven-month outage which allowed extension to June 21, 1988.
3 The interval was further extended to Spring 1989 (approximately one year as allowed by IVA-2400(c)) to coincide with the sixth refueling outage.
Due to the 1985-1986 18-month outage and the 9-month 1988 refueling outage, Toledo Edison intends to further extend the end of the interval up to a maximum of 27 months to allow the end of the first interval to coincide with the sixth refueling outage (planned four month duration) which is currently scheduled to commence in the first quarter of 1990 (See attachment).
h THE TOLEDO EDISON COMPANY EDGON PLAZA 300 MADISON AVENUE TOLEDO, OHIG 43652
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8905080440 890426 POR ADOCK 05000346 I
Q PDC
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Docket Number 50-346 License Number NPF-3 Serial Number 1645 Page 2 Toledo Edison currently plans to submit the second ten-year interval inservice inspection and testing program plan approximately six months prior to start of i
the second interval. The start of the second interval coincides with the commencement of seventh cycle operations. The Davis-Besse program is composed of four sections as follows:
Section 1) pumps; Section 2) valves; Section 3)
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velds (including supports, components and bolting); and Section 4) system The inservice inspection and testing program plan vill be based pressure tests.
on the edition and addenda of the ASME Code incorporated by 10CFR50.55a(b), 12 months prior to the start of the second interval.
Changes to the Technical Specifications or requests for relief from ASME Code requirements vill be submitted at least six months prior to the beginning of the second interval as required by 10CFR50.55a(g).
Per NR guidance provided by letter dated Hey 24, 1984 (Log Number 1521), Toledo Edison understands that 10CFR50.55a(g) does not require the NRC to approve the revised program plan and that the NRC Staff vill only address requests for relief from code requirements and Technical i
Specification changes.
Should you have any questions, please contact R. V. Schrauder, Nuclear Licensing Manager, at (419) 249-2366.
Very truly yours, f'
h
['N GBK/lkg Attachment cc:
P. H. Byron, DB-1 NRC Resident Inspector A. B. Davis, Regional Administrator, NRC Region III T. V. Vambach, DB-1 NRC Senior Project Manager 1
l l
l l
Dockat Numbar 50-346 License Number NPF-3 Serial Number 1645 Attachment
SUMMARY
OF ALLOVABLE CHANGES TO IST 10-YEAR INSERVICE INSPECTION AND TESTING PROGRAM INTERVAL END DATE Interval End Date Basis November 21, 1987 10-year interval June 21, 1988 7-month outage permits extension of 7 months per IVA-2400(c)
December 21, 1989 18-month outage permits i
extension of additional 18 months per IVA-2400(c) i September 21, 1990 9-month outage permits extension of additional i
9 months per IVA-2400(c)
Applying one (1) year interval allowance to current schedule of September 21, 1990 Early as September 21, 1989 1 12 months allowable to Late as September 21, 1991 make interval end coincident with an outage per IVA-2400(c) l l
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