ML20207G279
| ML20207G279 | |
| Person / Time | |
|---|---|
| Site: | La Crosse File:Dairyland Power Cooperative icon.png |
| Issue date: | 07/15/1986 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20207G249 | List: |
| References | |
| NUDOCS 8607220746 | |
| Download: ML20207G279 (2) | |
Text
fft%q'o,,
s e
UNITED STATES 8
NUCLEAR REGULATORY COMMISSION o
E WASHINGTON. D. C. 20555
%.....)
SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO. 49 TO PROVISIONAL OPERATING LICENSE N0. DPR-45 DAIRYLAND POWER COOPERATIVE LA CROSSE B0ILING WATER REACTOR (LACBWR)
I DOCKET N0. 50-409
1.0 INTRODUCTION
I By application dated February'21, 1986, DairylandPowerCooperative(DPC)
(the licensee) requested a change to the table entitled " Minimum Frequencies
-I for Testing, Calibrating, and/or Checking of Instrumentation" in Section
.J 5.2.15 of the LACBWR Technical Specifications. The licensee proposes to l0' change the functional test frequency for installed area radiation monitors from every 2 weeks to quarterly and the calibration frequency from each refueling outage to at least once per 18 months.
s 2.0 EVALUATION
~
The primary function of the 15 area radiation monitors is to measure the ambient exposure rate in a given area of the plant on a continuing basis, I
and to inform plant personnel when predetermined exposure rates (alarm ij setpoints)areexceeded. They are not designed to satisfy the personnel l
monitoring requirements contained in Part 20.202 of Title 10 of the Code of Federal Regulations.
Area radiation measurements, when made over a period of time, are capable of indicating changes or trends in plant parameters. Because the monitors are designed primarily for trend indication and have no automatic safety-l related mitigating capacity, the staff concludes that changing the test frequency from biweekly to quarterly is acceptable.
American National Standard Institute criteria ANSI /ANS-6.8.1 states, "Unless there is evidence or experience to suggest that more frequent calibrations are desirable, annual or refueling intervals are sufficient."
l The licensee stated that, historically, there has not been a significant variance in each area radiation monitor's functional test results. Thus, there is no evidence or experience which suggests that more frequent calibrations are desirable. Additionally, since many nuclear power plants operate on a 18-month refueling cycle, the staff concludes, pursuant to ANSI /ANS-6.8.1, that changing the calibration frequency from once every refueling outage to at least once per 18 months is acceptable.
Nk k9 DO P
3.0 ENVIRONMENTAL CONSIDERATION
This amendment involves a change to a requirement with respect to the installation or use of facility components located within the restricted area as defined in 10 CFR Part 20 and changes to the surveillance requirements. The staff has determined that the amendment involves no significant increase in the amounts, and no significant change in the types, of any effluents that may be released offsite and that there is no significant increase in individual or cumulative occupational radiation exposure.
The Commission has previously issued a proposed finding that this amendment involves no significant hazards consideration and there has been no public comment on such finding. Accordingly, this amendment meets the eligibility criteria for categorical exclusion set forth in 10 CFR 51.22(c)(9). Pursuant to 10 CFR 51.22(b) no environmental impact statement nor environmental assess-ment need be prepared in connection with the issuance of this amendment.
4.0 CONCLUSION
The staff has concluded, based on the considerations discussed above, that:
(1) there is reasonable assurance that the health and safety of the will not be endangered by operat' ion in the proposed manner, and (2) public '
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 nor to the health and safety of the public.
Principal Contributors:
R. Buck and J. Stang 1
Dated: July 15, 1986 i
_. _ -. _.., _..