ML20135A217
| ML20135A217 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 02/19/1997 |
| From: | Graham P NEBRASKA PUBLIC POWER DISTRICT |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NLS970020, NUDOCS 9702270052 | |
| Download: ML20135A217 (3) | |
Text
.
4 P.O. BOX NEBR.ASKA 68321 Nebraska Public Power District
" M L"En""
NLS970020 February 19,1997 U.S. Nuclear Regulatog Commission Attention: Document Control Desk Washington, D.C. 20555-0001
Subject:
Revision of Commitment, Building Structural Core Drill Program Cooper Nuclear Station, NRC Docket 50-298, DPR-46
References:
1.
NPPD Letter to USNRC Document Control Desk from G. A. Trevors (NPPD) dated April 28,1989, "NPPD Response to Inspection Report 50-298/89-02."
2.
USNRC Letter from L. J. Callan to G. A. Trevors dated May 9,1989, Regarding Drawing Upgrade Efforts.
3.
Letter to USNRC Document Control Desk from G. R. Horn (NPPD) dated March 12,1993, " Status of Facility Drawing Update Efforts - Cooper Nuclear Station" Gentlemen:
The purpose of this letter is to inform you that the Nebraska Public Power District (District) is revising the building structural core drill program commitment discussed in References 1, 2, and 3 regarding the Building Stmetural Core Drill Program at Cooper Nuclear Station (CNS).
Specifically, the District has as-built drawings for 100% cf the Reactor Building and plans no further as-building efforts for the Building Structural Core Drill Program.
A review of the Reactor Building drawings indicates that no extensive core dnlling activities have taken place after original constmetion in this building. Based on this comparison and a walkthrough in the other Class IS stmetures, it is believed that the other Class IS Structures will exhibit similar or less core drilling activities than the Reactor Building.
Additionally, CNS engineering procedure 3.6.4, " Core Drill Activities," requires that an analysis and/or documentation be approved by the Civil / Structural Engineering Group prior to any new core drilling taking place. The process of using existing or new drawings and calculations in conjunction with a plant walkdown provides assurance that the overali strucwral integrity of Class t '
IS structures is assured. nnnnan
[
9702270052 970219 PDR ADOCK 05000298 bh$4WM hlM Mk& MIE EdTM45 N IN $$1AhY*W S Y E YbYY
=====m================s
mm= = =.== = m = = =
\\
~
e' NLS970020 February 19,1997
- Page'2 of 2 i
I Based on the above discussion, the District believes that the existing core drills do not impact the stnictural integrity of Class IS building structures and the current process in place for new core drills provides assurance that the overall structural integrity of the Class IS building structures is 3
assured.
With the revision of the above commitment, in conjunction with existing programmatic controls, the District regards all Building Structural Core Drill Program activities as complete. Please contact me as soon as possible ifyour office should disagree with the above commitment change, or if you should need additional information.
j Sincerely, PBD~
P. D. Graham Vice President - Nuclear j
/nr cc:
Regional Administrator USNRC - Region IV 2,
}
Senior Project Manager j
USNRC - NRR Project Directorate IV-1 1-Senior Resident Inspector USNRC NPG Distribution a
i i
il 4
i i
i
-f 4
l
F l
ATTACHMENT 3 LIST OF NRC CONNITMENTS l
Correspondence No: NLS970020 The following table identifies those actions committed to by the District in this document. Any other actions discussed in the submittal represent intended or planned actions by the District.
They are described to the NRC for the NRC's information and are not regulatory commitments.
Please notify the Licensing Manager at Cooper Nuclear Station of any questions regarding this document or any associated regulatory commitments.
COMMITTED DATE COMMITMENT OR OUTAGE None 4
")
I l
PROCEDURE NUMBER 0.42 l
REVISION NUMBER 2 l
PAGE 8 OF 30 l