ML20247A117
| ML20247A117 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 05/09/1989 |
| From: | Callan L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Trevors G NEBRASKA PUBLIC POWER DISTRICT |
| References | |
| NUDOCS 8905230045 | |
| Download: ML20247A117 (1) | |
See also: IR 05000298/1989002
Text
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In Reply Refer'To:-
Docket: 50-298/89-02
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Nebraska Public Power District
ATTN: George A. Trevors
Division Manager - Nuclear Support
P.O. Box 499.
Columbus, NE' 68602-0499
Gentlemen:
Thank you for. the April 28,1989, letter in response to our request for
additional information on'your drawing update efforts. We will continue to
follow your efforts and would appreciate being informed of any significant
changes in their' scheduled completion.
Sincerely,
Original Signed Ily
E J. Callan
L. J. Callan Director
Division of Reactor Projects
cc:
Cooper Nuclear Station
ATTN: Guy Horn, Division Manager
of Nuclear Operations
P.O. Box 98
Brownv111e, Nebraska 68321
Kansas Radiation Control Program Director
Nebraska Radiation Control Program Director
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GENERAL OFFICE
Nebraska Public Power District
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.NLS8900175
April 28, 1989
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U.S. Nuclear Regulatory Commission
Attention: Document Control Desk
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Gentlemen:
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Subject: NPPD Response to Inspection Report 50-298/89-02
Cooper Nuclear Station
Docket No. 50-298, DPR-46
This letter is written in response to your letter dated March
1,
1989,
transmitting Inspection. Report 50-298/89-02.
Therein you requested that we
provide within 60 days of the date of that letter a discussion of all facility
drawing update efforts, together with the schedule for completing the updates.
Following is a discussion of all facility drawing update efforts including
scheduled completion dates you requested.
1.
As Built Verification Project
This proj ect
is. under the direction of the Nuclear Configuration
Management- Department and is being performed by the Consulting Firm
Applied Power Associates.
The As-Built Verification Project is scheduled to walk down 239 Safety
Related Drawings (Primary. Drawings) held in the Control Room at CNS by the
end of the fourth quarter ~ of 1991.
Nine additional drawings were
previously verified under a pilot proj ect.
In addition, approximately
2,500 related drawings are scheduled to be walked down by the end of the
first quarter of 1993.
To date, the equivalent of approximately 85 primary drawings (thirty-six
percent) and the equivalent of approximately 200 related drawings (eight
percent)
have been completed.
The
overall proj ect
completion is
twenty-four percent.
2.
Electrical Conduit Hanger
The District undertook the task of as-building the cable tray and conduit
hangers 'in the Reactor Building, Control Building, and Diesel Generator
Rooms.
This project is about 75% complete.
As-building is complete in
the Diesel Generator Room, Control Building except the Control Room,
Critical Switchgear Room, and Steam Tunnel.
Presently, 3,976 hangers are
as-built. with 1,339 estimated remaining.
These are primarily in the
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Reactor Building Quads. About five man-years of effort remains to be
done.
Work should complete around January 1990 depending on other
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priority work.
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3.
Building Structeral Core Drill
Work'has also started on as-building the building structural drawings to
show core drills.
This proj ect is approximately 25% complete and will
take about three man-years to complete.
This is presently
a lower
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priority job but should complete in 1991.
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4.
Burns & Roe E-150 Electrical Drawings
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The B&R E-150 drawings' contain the relay settings for ., tha electrical
system.
Following the completion of the critical (safety-related) AC & DC
system . coordination studies, these drawings were totally reviewed and
. updated as required.
A non-critical study is now being completed.
The
appropriate non-critical E-150 drawings will be reviewed and. updated
following any identified modifications that may be required during the
Spring 1990 outage.
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5.
Pipe Support
Modifications are being made to pipe supports during the 1989 outage as
part of the I-S Pipe Support Upgrade program. These pipe supports will be
as-built following modification.
Additional pipe supports will be
as-built following modification during the outage due to the snubber
reduction / pipe stress upgrade program.
An as-building program is also scheduled from March 1989 to March 1990 to
reconfirm the as-build status of the remaining essential large bore pipe
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supports. This information will be used to review / upgrade the pipe stress
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calculations and to optimize snubbers.
Torus attached piping support as-builts will also be reconfirmed during
the Spring of 1989 to assure the documentation matches the quality of the
rest of the supports.
6.
Appendix R Drawings
All the walls making up the " Appendix
R"
Fire Protection Areas were
as-built to show fire seals and penetrations.
This resulted in_a set of
128 drawings which provide a basis around which the fire protection plans
were developed.
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7.
All. USAR Piping and Instrumentation (P&ID) drawings were identified to
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determine which vendor, General Electric (GE) or Burns & Roe (B&R),
originated the drawings.
All GE P&ID drawings located in the USAR will be removed and replaced with
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current B&R P&ID drawings, with the exception of one drawing. This one GE
P&ID does not have a corresponding B&R P&ID to replace it and therefore,
it will remain in the USAR.
The replacement of the GE P&ID's with the B&R P&ID's will be submitted
with the seventh revision (July 22, 1989) of the USAR for Cooper Nuclear
Station.
If you have any questions regarding this response, please contact me.
Sincerely,
. Trevors
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Division Manager
Nuclear Support
/jw
cc:
.S. Nuclear Regulatory Commission
Region IV
Arlington, TX
NRC Senior Resident Inspector
Cooper Nuclear Station
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