ML20211C321
| ML20211C321 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 09/19/1997 |
| From: | Langenbach J GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20211C326 | List: |
| References | |
| 6710-97-2424, NUDOCS 9709260161 | |
| Download: ML20211C321 (3) | |
Text
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.l GPU Nuclear. Inc.
(
Route 441 South NUCLEAR Midd4 town PA170574480 Tel717 944 7621 September 19, 1997 6710-97-2424 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555
_ Gentlemen:
Subject:
Three Mile Island Nuclear Station, Unit I (TMI-1)
Docket No. 50-289 Operating License No. DPR-50 Supplement to License Amendment Request No. 269-Revised Steam Line 13reak Accident Analysis Dose Consequence This letter provides a supplement to TMI-l License Amendment Request No. 269 previously submitted to the NRC on August 14, 1997 (6710-97-2345). As discussed in GPU Nuclear /NRC conference calls on September 16 and 17,1997, this supplement includes an additional change to TMI-l Technical Speci0 cation Section 3.1.4 to provide a more restrictive limit of 0.35 microcurie / gram dose equivalent lodine-131 for reactor coolant system (RCS) activity level during plant operation. The dose consequences associated with License Amendment Request No. 269 are based on the existing Technical Speci6 cation limit of 1.0 microcurie / gram dose equivalent lodine-131. Therefore, this more restrictive limit on RCS activity level provides an additional conservatism in the dose consequences associated with License Amendment Request NoJ269, This additional conservatism is provided to account for uncertainties identined by NRC in the Pashing fraction and atmospheric diffusion values utilized by GPU Nuclear in the analysis supporting License Amendment Request No. 269. Accounting for NRC uncertainties by implementing a more restrictive RCS activity level ensures that the dose consequences resulting from the postulated accident induced once-through steam generator (OTSG) tube leakage described in License Amendment Request No. 269 remain conservative and result in values which are a small fraction of the 10 CFR 100 limits.
l The revision of the Technical Speci6 cation limit on RCS dose equivalent iodine activity level from 1,0 microcurie / gram to 0.35 microcurie / gram is considered an administrative change since i
L it. implements a more restrictive, conservative operational limit.
Therefore, this additional change to the TMI-l License Amendment Request No. 269 does not affect the safety evaluation
-justifying the proposed license amendment and does not change any of the conclusions
/
If supporting the no significant hazards discussion or environmental consideration provided l
License Amendment Request No. 269 submittal referenced above. An additional editorial
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9709260161 970919 f^
6710-97-2424 Page 2 clarification to the previously proposed revision to TMI l Updated Final Safety Analysis Report (UFSAR), page 14.1-32, originally submitted in License Amendment Request No. 269, is included in Enclosure 1. This proposed UFSAR page revision clarines that the UFSAR analysis performed using 1.0 microcurie / gram dose equivalent iodine is more conservative than the Technical Speci6 cation 3.1.4 limit. The revised TMI l Technical SpeciGcation and UFSAR pages are included in Enclosure I and are to be included as a supplement to TM1-1 License Amendment Request No. 269.
Also enclosed is the Certi6cate of Service for this request cenifying service to the chief executives of the township and county in which the facility is located, as well as the designated oGicial of the Commonwealth of Pennsylvania, Bureau of Radiation Protection.
GPU Nuclear plans to provide the data and analyses in the next 3-6 months to support the flashing factor and atmospheric diffusion model values to justify a less restrictive RCS activity level.
Sincerely,
@Q) a James W. Langenbach Vice President and Director, TMl DJD
Enclosures:
(1) Supplemental TMI-l Technical SpeciGcation/UFSAR Revised Pages (2) Certincate of Service for Supplement to TM1-1 License Amendmer.t Reauest No. 269 cc:
Administrator, Region 1 TMl Senior Resident inspector TMI l Senior Project Manager
METROPOLITAN EDISON COMPANY JERSEY CENTRAL POWER & LIGIIT COhiPANY AND PENNSYLVANI A ELECTRIC COMPANY TilREE MILE ISLAND NUCLEAR STATION, UNIT 1 Operating License No. DPR-50 Docket No. 50-289 Supplement to License Ar..endment Request No. 269 COMMONWEALTil OF PENNSYLVANI A
)
) SS:
COUNTY OF DAUPillN
)
This supplement is submitted in support of Licensee's request to change the License Conditions,
Technical Specification, and add License Appendix B to Operating License No. DPR-50 for Three Mile Island Nuclear Station, Unit I, As a part of this request, proposed replacement pages for Operating License DPR-50 and Technical Specifications are also included. All statements contained in this submittal have been reviewed, and all such statements made and matters set forth therein are true and correct to the best of my knowledge.
GPU NUCLEAR INC.
BY:
ice President and D@ctor, TM1 L e a 6' W A l
/ Swstn n Subscribec to before me this /
ay of l u_4 1997-Notanaiscal So: anno C. M*tod, Notary Public Lonoonderry Twp, Dauonin County My Commission Erpires Nov. 22,1990 Member, f'ennsylvarha Aswcatioriof Netaat l
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