ML20126D277: Difference between revisions
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GPU Nuclear Corporation U Nuclear | GPU Nuclear Corporation U Nuclear | ||
;rio=gr8o | |||
,e Middletown, Pennsylvania 17057 0191 717 944 7621 TELEX 84 2386 Writer's Direct Dial Number: | |||
(717) 948-8400 December 18, 1992 C312-92-2080 C000-92-1936 US Nuclear Regulatory Commission A1TN: Document Control Desk Washington, DC 20555 Three Mile Island Nuclear Station, Unit 2 Operating License No. DPR-73 Docket No. 50 320 TMI-2 Reactor Vessel Criticality Safety Analysis | (717) 948-8400 December 18, 1992 C312-92-2080 C000-92-1936 US Nuclear Regulatory Commission A1TN: Document Control Desk Washington, DC 20555 Three Mile Island Nuclear Station, Unit 2 Operating License No. DPR-73 Docket No. 50 320 TMI-2 Reactor Vessel Criticality Safety Analysis | ||
==REFERENCE:== | ==REFERENCE:== | ||
1. | |||
GPU Nuclear letter 4410-90-L-0012, "Defueling Completion Report, Final Submittal," dated February 22,1990. | |||
2. | |||
GPU Nuclear letter 4410-90-L-0026, "Results of Post-Lower Head Sampling Program Cleanup," dated April 12, 1990. | |||
==Dear Sir:== | ==Dear Sir:== | ||
A reanalysis of the Three Mile Island Unit 2 (TMI-2) Reactor Vessel (RV) steady state and accident criticality safety evaluations was necessitated by an increase in the estimated quantity of fuel remaining in the TMI-2 RV above that assumed for the previous analyses (References I and 2). The n: analysis (attached) was performed by the Oak Ridge National laboratory (ORNL). | |||
A reanalysis of the Three Mile Island Unit 2 (TMI-2) Reactor Vessel (RV) steady state and accident criticality safety evaluations was necessitated by an increase in the estimated quantity of fuel remaining in the TMI-2 RV above that assumed for the previous analyses (References I and 2). The n: analysis (attached) was performed by the Oak Ridge National laboratory (ORNL). A conservative criticality model was used to bound the most credible fuel configurations. The ORNL analyses demonstrated that the TMI-2 RV will remain suberitical by a substantial margin in both the steady state and accident configurations notwithstanding the conservative criticality models and assumptions. | A conservative criticality model was used to bound the most credible fuel configurations. The ORNL analyses demonstrated that the TMI-2 RV will remain suberitical by a substantial margin in both the steady state and accident configurations notwithstanding the conservative criticality models and assumptions. | ||
Sir..erely, 7 | Sir..erely, | ||
/ | |||
7 7c., q u U w, | |||
F. I. Young - Senior Resident Inspector, TMI 9212240116 921218 PDR | R. L. Long Director, Corporate Services /TMI-2 EDS/dib cc: | ||
T. T. Martin - Regional Administrator, Region I M. T. Masnik - Project Manager, PDNP Directorate L. II. Thonus - Project Manager, TMI F. I. Young - Senior Resident Inspector, TMI 9212240116 921218 PDR ADOCK 05000320 i' | |||
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PDR | |||
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GPU Nuclear Corporation is a subsidiary of the General Public Utilities Corporation l | |||
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Latest revision as of 19:51, 12 December 2024
| ML20126D277 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 12/18/1992 |
| From: | Long R GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20126D280 | List: |
| References | |
| C-92-1936, C000-92-1936, C321-92-2080, NUDOCS 9212240116 | |
| Download: ML20126D277 (1) | |
Text
__
i*'
GPU Nuclear Corporation U Nuclear
- rio=gr8o
,e Middletown, Pennsylvania 17057 0191 717 944 7621 TELEX 84 2386 Writer's Direct Dial Number:
(717) 948-8400 December 18, 1992 C312-92-2080 C000-92-1936 US Nuclear Regulatory Commission A1TN: Document Control Desk Washington, DC 20555 Three Mile Island Nuclear Station, Unit 2 Operating License No. DPR-73 Docket No. 50 320 TMI-2 Reactor Vessel Criticality Safety Analysis
REFERENCE:
1.
GPU Nuclear letter 4410-90-L-0012, "Defueling Completion Report, Final Submittal," dated February 22,1990.
2.
GPU Nuclear letter 4410-90-L-0026, "Results of Post-Lower Head Sampling Program Cleanup," dated April 12, 1990.
Dear Sir:
A reanalysis of the Three Mile Island Unit 2 (TMI-2) Reactor Vessel (RV) steady state and accident criticality safety evaluations was necessitated by an increase in the estimated quantity of fuel remaining in the TMI-2 RV above that assumed for the previous analyses (References I and 2). The n: analysis (attached) was performed by the Oak Ridge National laboratory (ORNL).
A conservative criticality model was used to bound the most credible fuel configurations. The ORNL analyses demonstrated that the TMI-2 RV will remain suberitical by a substantial margin in both the steady state and accident configurations notwithstanding the conservative criticality models and assumptions.
Sir..erely,
/
7 7c., q u U w,
R. L. Long Director, Corporate Services /TMI-2 EDS/dib cc:
T. T. Martin - Regional Administrator, Region I M. T. Masnik - Project Manager, PDNP Directorate L. II. Thonus - Project Manager, TMI F. I. Young - Senior Resident Inspector, TMI 9212240116 921218 PDR ADOCK 05000320 i'
i P
}'
l
)
GPU Nuclear Corporation is a subsidiary of the General Public Utilities Corporation l
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