ML20207B765
| ML20207B765 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 07/15/1986 |
| From: | OMAHA PUBLIC POWER DISTRICT |
| To: | |
| Shared Package | |
| ML20207B726 | List: |
| References | |
| NUDOCS 8607180200 | |
| Download: ML20207B765 (4) | |
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-4a-Specification 16 contained in Table 3-5 shall be effective when the last new rack is installed.
Design Feature 4.4.2, Spent Fuel Storage, last paragraph, shall be effective when the last new rack is installed.
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This amended license is effective as of the date of issuance and shall expire at midnight on August 9, 2013.
FOR THE NUCLEAR REGULATORY COMMISSION
Enclosures:
Appendix A - Technical Specifications Date of Issuance:
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ATTACHMENT A hhh Nb f
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1 Attachment B Justification and No Significant Hazards Consideration Discussion Omaha Public Power District (OPPD) proposes to change the Operating License No.
DPR-40 for the Fort Calhoun Station for 40 years from date of operating license issuance rather than 40 years from date of issuance of Construction Permit.
Fort Calhoun Station is currently licensed for plant operation for 40 years, from the date of issuance of the construction permit. Accounting for the time that was required for construction of the Fort Calhoun Station, this represents an effective operating license term of only 35 years. This application re-quests a full 40-year operating license term for Fort Calhoun. We believe that the basis for granting our request has been established in the Commission's regulations.10 CFR 50.51 states that the Commission will issue an operating license for the term (not to exceed 40 years) requested by the applicant or for the estimated useful life of the facility if the Commission determines that the estimated useful life is less than the term requested.
I Until quite recently, Commission policy was to issue an operating license for 40 years from the date of construction permit issuance. Certain plants which received their initial operating license after 1982 have received operating licenses reflecting forty years of actual operating life. OPPD has observed the efforts of Baltimore Gas and Electric in amending their operating licenses to permit 40 years of operation.
It is our understanding that several points should be addressed in such an application.
The Commission, in amending the Calvert Cliffs licenses, noted that the issuance of operating licenses for 40 years from date of construction permit issuance rather than 40 years from date of operating license issuance was arbitrary, and had no safety basis. The plant was designed for 40 years. The Final Safety Analysis Report (FSAR) for the Fort Calhoun Station considered 40 years of operation.
Routine programs such as preventative maintenance, inservice inspection, inservice testing and surveillance testing provide for the assessment of the plant on an on-going basis. These programs provide assurance that the plant is being properly maintained. OPPD's program for continuing compliance with 10 CFR 50.49 provides assurance that safety related electrical equipment in a potentially harsh environment is qualified for its intended purpose.
OPPD has reviewed the design of the Fort Calhoun reactor vessel. The vessel and its internals were designed considering the effects of 40 years of oper-ation at full power with a plant capacity factor of 80 % or 32 effective full power years (EFPY). Analyses performed using the current regulatory guidelines have demonstrated that the expected cumulative neutron fluence will allow oper-ation beyond 32 EFPY.
In addition to these calculations, surveillance capsules placed inside the reactor vessel provide a means of monitoring the cumulative effects of power operation.
We fully expect that the facility will remain useful beyond the current opera-ting license expiration date, and will continue to enhance the economic health and well-being of OPPD's service area. As a baseload generating station, Fort Calhoun Station provides power and stability to the area. The additional years of plant operation allowed by the proposed change will defer the need to re-place baseload capacity (thus deferring the environmer.tal impacts associated with construction of such capacity) or the need to purchase supplemental power from outside our system.
y Attachment B Page 2 Finally, residents and industrial interests throughout the service area will benefit from the lower cost of electricity that result from spreading costs over a longer period of time, and the deferment of future construction.
DETERMINATION OF SIGNIFICANT HAZARDS CONSIDERATIONS We have evaluated the potential impacts associated with this request and have determined that the proposed change does not involve a significant hazards consideration. This determination is based primarily on the fact that a forty year service life was considered during the design and construction of the plant. Although this does not mean that some components will not wear out dur-ing the plant lifetime, design features were incorporated which maximize the inspectability of structures, systems, and equipment. Surveillance and mainte-nance practices which are implemented in accordance with the ASME Code and the Fort Calhoun Station Technical Specifications provide assurance that unexpected degradation in plant equipment will be identified and corrected.
The design of the reactor vessel and its internals considered the effects of 40 years of operation at full power with a plant capacity factor of 80% (32 effective full power years). Analyses have demonstrated that expected cumulative neutron fluences will not be a limiting consideration.
In addition to these calculations, surveillance capsules placed inside the reactor vessel provide a means of monitoring the cumulative effects of power operation.
Aging analyses have been performed for safety-related electrical equipment in accordance with 10 CFR 50.49, Environr. ental Qualification, identifying quall-fied lifetime for this equipment. The OPPD Qualified Life Program provides for the timely refurbishment or replacement of such equipment in order to assure its on-going qualification.
OPPD has reviewed the Fort Calhoun Station Environmental Report dated January, 1972, Supplement 1, and has concluded the impacts associated with a 40 year license duration are not significantly different from those associated with the 35 year license duration.
In general, the Environmental Report assesses various impacts associated with the operation of the facility in terms of annual impact and balances these against the anticipated energy production benefits.
Thus, the overall assessment and conclusions would not be dependent on specific operating life.
There are however, five areas in which a specific operative life was either assumed or discussed:
1.
Future population; 2.
Power supply needs and economic benefits; 3.
Cost-benefit analysis for alternative condenser cooling systems; 4.
Cost-benefit analysis for radioactive waste treatment systems; and 5.
Total population dose estimates from postulated accidents and occurrences.
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' ' Attachment B Page 3 Comparison made of the projected 1980 population in the revised Environmental Report (1972) to the actual 1980 census show that the population did not in-crease at the rate anticipated. The table below shows the comparison within a ten-mile radius of the containment structure:
Radial Revised Environmental Report 1980 Census Population Miles 1980 Population (Pro.iected)
(Actual) 0-1 0
0 1
450 14 2
820 39 3
2030 1439 4
7300 4012 5
12720 1705 10 24270 8912 Total 47590 16121 The actual 1980 population in the ten mile radius was approximately three times less than what was predicted in 1972.
Projections have also been made for the year 2010 in the Updated Safety Analy-sis Report (USAR). The USAR projects the 2010 population in the 0 - 10 mile radius to be 21,660.
In comparing the 2010 population estimated in the USAR to the 1980 population estimate made in the Revised Environmental Report, the 2010 population estimate is less than half of the estimate made for 1980:
Radial Revised Environmental Report USAR Miles 1980 Population (Proiected) 2010 Pooulation (Estimate) 0-1 0
0 1
450 20 2
820 50 3
2030 1930 4
7300 5400 5
12720 2260 10 24270 12000 Total 47590 21660 The actual 1980 population and the estimated 2010 population in the USAR was used to determine a growth rate. Using the growth rate of 1.2% the estimated population for 2013, would be 22,449. Again, the estimated population for the 40-year operating lifetime through 2013 is less than half the estimated popula-tion for 1980 in the environmental report.
The calculations presented in the Environmental Report supporting the conclu-sion of the need for power would not be affected because the plant is already operational, and is expected to remain economically useful for the period of time in question.
For these reasons, OPPD believes that this request contains no significant hazards considerations.
Tne assumptions of the Final Safety Analysis Report and Environmental Report remain valid.
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