NOC-AE-000178, Application for Amends to Licenses NPF-76 & NPF-80, Reflecting Rev of Criticality Analyses & Rack Utilization Schemes for Regions 1 & 2 of Spent Fuel Racks as Described in STP UFSAR & TSs
| ML20236L613 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 07/07/1998 |
| From: | Cloninger T HOUSTON LIGHTING & POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20236L615 | List: |
| References | |
| NOC-AE-000178, NOC-AE-178, NUDOCS 9807130093 | |
| Download: ML20236L613 (4) | |
Text
- _ - _ _ _ _ _ _ _ _ _ _ -. _ _ - _ _
I i
(
Nuclear Operating Company S
swth rawartecmatmstatu na sazu nusarer ramn w,
July 7, 1998 NOC-AE-000178 File No.: G20.02.01 G21.02.01 10CFR50.90 l
STI: 30626114 U. S. Nuclear Regulatory Commission l
Attention: Document Control Desk Washington, DC 20555-0001 South Texas Project Units 1 and 2 Docket Nos. STN 50-498, STN 50-499 Proposed Amendment to Technical Specifications for Spent Fuel Storage Pool Rack j
Criticality Analyses with Soluble Boron Credit
{
Reference:
- 1) Letter from T. E. Collins, U. S. Nuclear Regulatory Commission, to T. Greene, Westinghouse Owners Group, dated October 25,1996, Acceptance for Referencing of Licensing Topical Report WCAP-14416-P (Westinghouse Spent Fuel Rack Criticality Analysis Methodology.)
The South Textr, Project proposes to amend Facility Operating Licenses NPF-76 and NPF-80 by f
revising Technical Specifications to reflect revision of the criticality analyses and the rack utilization schemes for Regions 1 and 2 of the spent fuel racks as described in the South Texas Project Updated Final Safety Analysis Report (UFSAR) and the Technical Specifications.
i This proposed change is based on the methodology accepted by the NRC, per Reference 1. This methodology was used to perform a cdticality analysis specific to the South Texas Project included I
in this submittal (Attachment 2) and is the subject of the attached safety evaluation. The safety evaluation meets the provisions stated in the SER (Reference 1) and includes the material f
specifically requested by the SER.
/ { Ed/
The revised criticality analysis was performed to allow credit for spent fuel pool soluble boron. The South Texas Project has concerns with the degradation of the Boraflex panels in the Spent Fuel Pool Region 1 racks. In response, spent fuel pool soluble boron concentration is maintained above 2500 ppm. Boraflex degradation has caused increased silica levels in the spent fuel pool.
Approval of this Technical Specification change will allow removal of the Region 1 Boraflex panels which will result in a reduction of the silica levels in the Spent Fuel Pool. The South Texas 9807130093 980707 PDR ADOCK 05000498 P
}
(
)
NOC-AE-000178 File No.: G20.02.01 Page 2 Project requests this amendment be approved by December 31,1998. An expedited review is requested to albw for removal of the Boraflex panels in 1999. The South Texas Project requests up to 90 days for implementation after approval to allow time for required documentation changes.
The required affidavit is included with this letter, along with the Safety Evaluation (Attachment 1),
which includes the description of the proposed changes, and the purpose for requesting the changes.
In addition, this letter contains a copy of the Spent Fuel Rack Criticality Analysis with Credit for Soluble Boron (Attachment 2) and the Spent Fuel Pool Dilution Analysis (Attachment 3) performed by Westinghouse for the South Texas Project. Also included is the No Significant Hazards Evaluation (Attachment 4), the marked up pages of the UFSAR for the revised spent fuel rack utilization plan (Attachment 5), and the marked up Technical Specifications pages (Attachment 6) associated with the proposed change.
A No Significant Hazards Evaluation has determined that there are no significant hazards associated with this change. The Nuclear Safety Review Board has reviewed and approved this change. South Texas has determined that this amendment request is eligible for categorical exclusion from environmental review per 10CFR51.22(c)(9). Additionally, in accordance with 10CFR50.91(b), South Texas Project is providing the State of Texas with a copy of this proposed amendment.
I If you should have any questions concerning this matter, please call Mr. A. W. Harrison a (512) 972-7298 or me at (512) 972-8787.
V o
T. H. Cl 'nger Vice siden kaw Nuclear En eering I
Attachments:
- 1. Safety Evaluation for South Texas Project Units 1 and 2 Spent Fuel Storage Pool Rack Criticality Analysis with Credit for Soluble Boron
- 2. South Texas Units 1 and 2 Spent Fuel Rack Criticality Analysis with Credit for Soluble Boron
- 4. No Significant Hazards Evaluation
- 5. Proposed Chaiges to the South Texas Project Updated Final Safety Analysis Report for Revised Spent Fuel Rack Utilization Plan
- 6. Proposed Technical Specification Changes t
NOC-AE-000178 File No.: G20.02.01 G21.02.01 Page 3 E!!is W. Merschoff Jon C. Wood Regianal Administrator, Region IV Matthews & Branscomb U. S. Naclear Regulatory Commission One Alamo Center 611 Ryan Plaza Drive, Suite 400 106 S. St. Mary's Street, Suite 700 Arlington, TX 76011-8064 San Antonio,TX 78205-3692 Thomas W. Alexion Institute of Nuclear Power Project Manager, Mail Code 13H3 Operations - Records Center U. S. Nuclear Regulatory Commission 700 Galleria Parkway Washington, DC 20555-0001 Atlanta, GA 30339-5957 David P. Loveless Richard A. Ratliff Sr. Resident Inspector Bureau of Radiation Control c/o U. S. Nuclear Regulatory Commission Texas Department of Health P. O. Box 910 1100 West 49th Street Bay City, TX 77404-0910 Austin, TX 78756-3189 J. R. Newman, Esquire D. G. Tees /R. L.. Balcom Morgan, Lewis & Bockius Houston Lighting & Power Co.
1800 M. Street, N.W.
P. O. Box 1700 Washington, DC 20036-5869 Houston,TX 77251 M. T. Hardt/W. C. Gunst Central Power and Light Company City Public Service ATTN: G. E. Vaughn/C. A. Johnson P. O. Box 1771 P. O. Box 289, Mail Code: N5012 San Antonio,TX 78296 Wadsworth,TX 77483 A. Ramirez/C. M. Canady City of Austin Electric Utility Department 721 Barton Springs Road Austin,TX 78704
UNITED STATES OF AMERJCA NUCLEAR REGULATORY COmflSSION I
In the Matter of
)
)
STP Nuclear Operating Company
)
Docket Nos.
50-498
)
50499
)
South Texas Pmject
)
Units 1 and 2
)
AFFIDAVIT I, T. H. Cloninger, being duly swom, hereby depose and say that I am Vice President, Nuclear Engineering, of STP Nuclear Operating Company; that I am duly authorized to sign and file with the Nuclear Regulatory Commission the attached revised pages to Technical Specification 4.7.1.2.1, Bases 3/4.7.1.2, and the Updated Final Safety Analysis Report; that I am familiar with the content : hereof; and that the matters set forth therein are tme and correct to the best of my knowledge and belief.
II
\\
T.
.Cloni i
V ee Pre ent, Nucle Engin ring STATE OFTEXAS
)
)
COUNTY OF MATAGORDA
)
Subycp and swom to before me, a Notary Public in and for the State of Texas, this /
day of 10 //
,1998.
l A
.Av UNDA RITTENBERRY l Notary Public in and for the f
. Nota'y Public. B*e of Texas State of Texas i
uy ce.me tom 1
OCT,9,2001 NOC-AE4X)178 I
t__
- -. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - _ - - - - - - - - - - - -.