ML20073P952
| ML20073P952 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 04/18/1983 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20073P951 | List: |
| References | |
| NUDOCS 8304270331 | |
| Download: ML20073P952 (3) | |
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k UNITED STATES NUCLEAR REGULATORY COMMISSION e-o g*****jl WASHINGTON, D. C. 20556 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO.17 TO FACILITY OPERATING LICENSE NO. DPR-22 NORTHERN STATES POWER COMPANY-1 MONTICELLO NUCLEAR GENERATING PLANT DOCKET NO. 50-263 i
13 Introduction By letter dated September 24, 1982, Northern States Power Company (the licensee)~
proposed changes to the Technical Specifications (.TS) of Facility Operating License No. DPR-22 for the Monticello' Nuclear Generating Plant. The re-visions to the Technical Specifications addressed in this Safety Evaluation include the following:
1.
Title change from AEC to Commission; 2.
Correction of Table numbering; 3.
Clarification of definition for.Ni; 4.
Clarification of the bases section to reflect the removal of two vacuum breakers; 5.
Identification of fire detectors that have been installed; 6.
Correction of ' inconsistency _between the FSAR and th'e Technical Spec _ifications on the reactor vessel construction codes and standards; 7.
Change from FSAR to USAR as the report to be reviewed by the Operations Committee; and
.8.
Correction of typographical errors.
Other changes requested in the September 24, ~1982-submittal are still under staff review and will be addressed by separate Safety Evaluation and license
. amendment.
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2.0 Evaluation 2.1 Vacuum Breakers The licensee has proposed to change the bases of section 3.7 to reflect the removal of two vacuum breakers. These revisions supplement Amendment 8 to DPR-22 issued on November 5,1981. By Amendment 8, the staff approved the licensee's determination that eight (rather than ten) vacuum breakers be' operable under normal conditions with six vacuum breakers required to keep the
.tcrus to drywell differential pressure below the two psid design limit.
Since we have previously evaluated the reduction from ten to eight vacuum breakers and because this revision supplements the previous amendment, we have 8304270331 8304'18 PDR ADOCK 05000263 P
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determined that the level of safety provided by the current Technical Specifications is not diminished. :Therefore, the proposed changes to the bases is acceptable.
2.2 Fire Detectors The licensee proposed changes to Table 3.13.1, " Safety Related Fire De-tection Instruments" to reflect the actual number of installed smoke r
detectors and corresponding locations. The identification of smoke detectors is required to be included in the Technical Specifications and therefore, the proposed changes are acceptable..
2.3 Reactor Vess al Construction Codes and Standards The licenn: Los proposed to revise the description of Section 5.3 on the reactor vessel construction codes and standards. An inconsistancy exists between the Final Safety Analysis Report (FSAR) and the Technical Specifications.
Since the FSAR is correct, the licensee proposes to reference the information in the FSAR. To further maintain consistency, the design temperature in the Technical Specifications-was changed from 575'F to 562*F. This does not alter the actual design of the vessel but references the information in the FSAR.
This change was discussed with and agreed to by the licensee. Since these changes do not diminish the level of safety, we find them acceptable.
2.4 Administrative Changes The licensee has proposed the following changes:
1.
Title change from AEC to Commission (TS definition "V" and 6.2.A.5.a).
2.
Clarification of definition of Ni (p.~ 90)
- 3.
Change from FSAR to USAR as the re; ort to be reviewed by the Operations.
Committee (TS 6.2.B.4.b)
~4.
Table renumbering (Table 3.2.7), and 5.
Typographical errors (TS 3.6.E/ Bases and 6.7.CZ3) _
Item 4. renumbering the' Table to 3.2.7, has been previously amended and during the staff's review of the requested license amendment, a coupleItem 5 (typo
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therefore, this change is unnecessary.
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- - typographical ~ errors were observed by the staff. These corrections were 1
-discussed with and agreed to by the licensee.
A typographical error was observed by the staff on TS. 3.6-D.1.b and the limiting condition was corrected to 2gpm increase in unidentified leakage within any 24-hour
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period.
The staff's intent was to approve an LC0 of 2 gpm increase within 24-hour L
period because it is more conservative than an LCO of 2 gpm increase within any 4-hour period. This correction was discussed with and agreed to by the licensaa.
The changes proposed above are administrative in nature and since they do not diminish the level 'of safety provided by the existing Technical Specifications, we have found them acceptable.
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. 3.0 Environmental Consideration We have determined that the amendment does not authorize a change in effluent types or total amounts nor an increase in power level and will not result in any significant environmental impact. Having made this determination, we have further concluded that the amendment involves an action which is insignificant from the standpoint of environmental impact and, pursuant to 10 CFR 551.5(d)(4), that an environmental impact statement, or negative declaration and environ-mental impact appraisal need not be prepared in connection with the issuance of this amendment.
4.0 Conclusion We have concluded, based on the considerations discussed above, that:
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(1) because the amendment does not involve a significant increase in the probability or consequences'of an accident previously evaluated.
does not create the possibility of an accident of a type different from any evaluated previously, and does not involve a significant reduction in a margin of safety, the amendment does not involve a significant hazards consideration, (2) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, and (3) such activities will be conducted in compliance with the Commission's regulations and the issuance of this amendment will not be inimical to the common defense and security or to the health and safety of the public.
Date: April 18,1983 Principal Contribetor:
H. Nicolaras I
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