ML20117K639
| ML20117K639 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 09/05/1996 |
| From: | Schnell D UNION ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20117K640 | List: |
| References | |
| TAC-M95203, ULNRC-3430, NUDOCS 9609120060 | |
| Download: ML20117K639 (5) | |
Text
- -...-. -
I901 Chouteau Avenue Past Ontce Box 149 St Louis, Missouri 63166 l
314 554-2650
(_Jyggy September 5, 1996 Donald F. Schnell 1
l Etucnuc 2"2"*'*"'
U.
S. Nuclear Regulatory Commission ATTY; Document Control Desk Mal'1 Station P1-137 Washington, D. C.
20555-0001 l
Gentlemen:
ULNPC-3430 i
TAC No. M95203 CALLAWAY PLANT DOCKET NUMBER 50-483 l
REVISION TO TECHNICAL SPECIFICATION 3/4.4 - REACTOR COOLANT SYSTEM
References:
- 1) ULNRC-3357 dated April 12, 1996 2)
K. M.
Thomas ltr to D.
F.
Schnell dated July 23, 1996
- 3) ULNRC-3410 dated August 2, 1996 l
- 4) ULNRC-3420 dated August 19, 1996 5)
K. M.
Thomas ltr to D.
F. Schnell dated September 4, 1996 l
This letter provides additional information i
in suppcrt of the amendment application that proposes the installation of laser welded tube sleeves in the Callaway Plant steam generators.
This information is submitted in response to the request for additional information transmitted by Reference 5 and supplements j
the information transmitted by References 1, 3,
and 4.
f l
The safety evaluation, significant hazards evaluation, and environmental consideration determinations as previously transmitted in Attachments l
3, 4,
and 5 of Reference 1, are still valid.
If you l
have any questions concerning this information, please
(
contact us.
l Very truly yours,
/
Donald F.
Schnell WEK/
^" '""*"'
10000 AW/ '/
9609120060 960905 1
l PDR ADOCK 05000483 p
PDR I
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l i
STATE OF MISSOURI
)
)
)
i l
Donald F.
Schnell, of lawful age, being first duly sworn l
upon oath says that he is Senior Vice President-Nuclear and an officer of Union Electric Company; that he has read the foregoing document and knows the content thereof; that he has l
executed the same for and on behalf of said company with full power and authority to do so; and that the facts therein stated are true and correct to the best of his knowledge,
.information and belief.
By j
~
Donald F.
Schnell Senior Vice President Nuclear j
SUBSCRIBED and sworn to before me this day of dt,h 2/~4 MJ 1996.
V
l AlMAA
/
f/ ~
//
V ()
BARBARA J. PFAFR NOTARY PUBLIC-STATE OF MISSOURI MY COMMISSION EXPIRES APRIL 22.1993 l
ST. LOUIS COUNIX l
i l
l t
I' l
l l
l
l cc:
T. A. Baxter, Esq.
Shaw, Pittman, Potts & Trowbridge 2300 N.
- Street, N.W.
Washington, D.C.
20037
[
M. H.
Fletcher Professional Nuclear Consulting, Inc.
19041 Raines Drive Derwood, MD 20855-2432 i
L.
Joe Callan Regional Administrator U.S. Nuclear Regulatory Commission Region IV l
611 Ryan Plaza Drive Suite 400 Arlington, TX 76011-8064 Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road 1
l Steedman, MO 65077 Kristine M. Thomas (2) 1 Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission i
1 White Flint, North, Mail Stop 13E16 11555 Rockville Pike Rockville, MD 20852-2738 Manager, Electric Department Missouri Public Service Commission P.O.
Box 360 Jefferson City, MO 65102 Ron Kucera Department of Natural Resources P.O. Box 176 Jefferson City, MO 65102 Don Woodlan i
TU Electric 1601 Bryan Street Dallas, TX 75201-3411 Pat Nugent Pacific Gas & Electric
{
Regulatory Services P.O.
Box 56 Avila Beach, CA 93424 i
_~
l ULNRC-3430 Attachment Page 1 of 7 RESPONSES TO NRC REQUEST FOR ADDITIONAL INFORMATION - CALLAWAY LASER WELDED SLEEVING With regard to inservice inspection for all sleeved steam generator tubes, the following information is needed:
l 1.
Describe the inspection technique (s) that will be used for the fabrication acceptance and baseline eddy-current examinations of tubes repaired by sleeving.
2.
Describe the qualification guidelines that will be used for personnel with respect to the qualification of personnel and techniques for the performance of examinations of repaired tubes.
Does the licensee plan to follow the latest revision of the EPRI PWR Steam Generator Examination Guidelines?
3.
Describe the initial scope of inservice inspection that will be performed on sleeved tubes, including the expansion criteria, should one or more defective sleeved tubes be j
identified during inspection.
In the technical specifications:
1.
Include the initial scope of inservice inspection that will be performed on sleeved tubes.
l 2.
Include the inservice inspection expansion criteria that will be applied for sleeved tubes should one or more defective slaeved tubes be identified.
Responses to NRC Questions:
1.
The post installation acceptance inspection of laser welded sleeves will be performed with the Cecco probe.
This probe is qualified in accordance with Appendix H of the EPRI PWR l
Steam Generator Guidelines.
In addition, a Plus Point RPC l
probe will be used to perform an informational base line inspection of the sleeve to support future steam generator ISI inspections.
I 2.
All data analysts reviewing eddy current data results l
(tubing and sleeves) will be qualified in accordance with Appendix G of the EPRI guidelines.
Union Electric currently plans to follow Revision 4 of the EPRI PWR Steam Generator Guidelines.
Future revisions of the EPRI Guidelines will be evaluated and adopted as appropriate.
I L
ULNRC-3430 Attachment Page 2 of 7 3.
Union Electric will inspect 20% of the steam generator sleeves nach refueling outage.
The initial scope and expansiott criteria for inservice inspection of sleeved tubes is included in the proposed attached Technical Specification Table 4.4-3.
Additional technical specification markups, which reference Table 4.4-3, are included for completeness.
Table 4.4-3 sati.sfies the request to add sleeve inspection criteria to the Callaway Technical Specifications.