ML20072P863
| ML20072P863 | |
| Person / Time | |
|---|---|
| Site: | McGuire  |
| Issue date: | 11/19/1990 |
| From: | Tuckman M DUKE POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9011290081 | |
| Download: ML20072P863 (3) | |
Text
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _ _ _. _ - _ - _ _ _ _ _ _ _ _
ll l
lo kr }swer l'vngwy 1,~ntj3 :t 4o11 v
. r0 /br,0! A!1
(%crbt!r M':'UU DUKE POWER November 19, 1990 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C.
20555
Subject:
McGuire Nuclear Station, Unit 1, Docket No. 50-369 ASME Code Section XI ilydrostatic Testing Requirements Relief Request. No. 90-02 Pursuant to 10 CFR 50.55a(g)(5)(lii), we request that additional time be added to our first ten year interval for Unit 1 to allow completion of certain inservice hydrostatic testing.
Find attached our justification for this request.
Should there be any questions concerning this matter, please contact P.F.
Gulli at 704-373-6233.
Very truly yours, M.S.Dw M.S. Tuckman, Vice President Nuclear Operations SEl.584 Attachment xc Mr. S.D. Ebneter, Administrator U.S. Nuclear Regulatory Commission, Region II 101 Marietta St., NW, Suite 2900 Atlanta, GA 30323 Mr. T.A. Reed, Project Manager U.S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation s
Washington, D.C.
20555 Mr. P.K. Van Doorn NRC Senior Resident Inspector McGuire Nuclear Station 0 y L
- g1mm m gr P
I e
November 19, 1990 U.S. Nuclear Regulatory Commission Pago No. I Duke Power Company McGuiro Nucicar Station, Unit 1 Roquest For Relief From ASME Code Section XI Requirements Rollef Roquest No. 90-02 I.
Component ist Which Relief Is Roquested:
The systems.and components for which relief is requestod are those portions of items identiflod in our inservice inspection program that have not been hydrostatically tested es required.
Please reference the McGuiro Inservico Program and post outage inservice reports for McCuire 1
Unit 1.
11.
ASME Code Section XI Requirement That.lias Bean Determined To Bo.
Impractical ASME Boller and Pressuro Vossal Section XI, B and PV, and IWA 2400, Section C.
Ill. Alternato Examination Proposed:
'No'alternato examinations are being proposed. The required examinations will be performed. The only change will be the time the examinations will be performed.
IV.
Basis For Roquesting Rolleft i
The McGuiro.insarvice plan consists of ton planned refueling outages within the ton yone inservice interval.
Our present plans are to change our' fuel.from a Westinghouso design to a habcock and Wilcox fuel design.
This chango will.be over more than one coro-load and will increaso the on-linotimoof'theplantduringthefirsttonyearsofoperationLlt thereby, reducing the number of scheduled refueling outages from ton.to.
i sovon outages.
As a result of this chango, the actual inservico inspectica time has~been reduced by three refueling outages.
If the required inservice hydrostatic tests are imposed in the existing ton year-interval to include the additional =12 months allowed by 10 CFR 55a, McGuiro Unit I would.bo required to romain in an outage in.1991 for an additional throo months.
V..
Why The Alternato Proposed Testing Will Provide An Acceptable'Lovel Of Quality lnd Safety
.At McGuiro to date, all-inservice and functional inspections havo.
1 rovoaled no evidence of failed wolds in pressure retaining piping i
systems.
L1, Tho prop'osed licenso amendment for this chango is currently being prepared.
November 19, 1990 U.S. Nuclear Regulatory Commission Relief Request No. 90-02 Page No. 2 The McGuire Unit 1 inservice inspection interval began on December 1, 1981. Our evaluation of the results of our inservice program thus far indicate that extending the McGuire Unit 1 inservice inspection interval for the purpose of completing these hydrostatic tests would not endanger the quality of operations nor affect the health and safety of the public. Therefore, we believe the burden of extending a normal refueling outage by three months outweighs the benefit of imposing the requirement during the normally scheduled inservice interval.
j
' V1.. Implementations j
i Our request'would change the required completion date for the hydrostatic tests from December 1, 1992 to December 1, 1993.
By this latter date. we will have ecmpleted the required inservice hydrostatic tests.
'i e
s
'f il i
l 4 -