ML20137R672
| ML20137R672 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 01/30/1986 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20137R669 | List: |
| References | |
| NUDOCS 8602130365 | |
| Download: ML20137R672 (2) | |
Text
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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACT 3R REGULATION RELATING TO AMENDMENT NO. 94 TO PROVISIONAL OPERATING LICENSE NO. DPR-20 CONSUMERS POWER COMPANY PALISADES PLANT DOCKET NO. 50-255
1.0 INTRODUCTION
By letter dated October 22, 1985, the Consumers Power Company (CPC) submitted a request for a change to the Palisades Plant Technical Specifications for the Containment High Radiation Channels. This change is required because of replacement of these channels with environmentally qualified equipment in accordance with the requirements of 10 CFR 50.49 - Environmental Qualification of electric equipment important to safety for nuclear power plants.
The amendment changes the test method for the monthly operability check specified in Table 4.1.2 to be compatible with the new equipment.
2.0 EVALUATION The replacement radiation channels do not have an internal check source as the previously installed channels did. The licensee was not able to find such equipment that was environmentally qualified. The internal check source was included in the existing Technical Specification for the previous channels for the monthly check of channel operability. The replacement channels
, incorporate two. test functions which provide an-alternative method of checking operability. These are:
- 1) a circuit failure alann, and 2) an electronic circuit check. The failure alarm circuit continuously monitors for and alarms on a loss of power, loss of high voltage or loss of signal from the detector.
The electronic circuit ' check feature is used to simulate a two decade increase in radiation level signal by injecting a signal in the signal amplifier that must produce the appropriate upscale reading. The electronic circuit check in conjunction with the loss of signal failure monitor provides a high level of assurance that the channel is operating properly. The Technical Specifications continue to require the daily comparison check of the four channels and a calibration of all four channel detectors every 18 months with an external source. The staff finds this combination of surveillance features and requirements acceptable for ensuring operability.
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3.0 ENVIRONMENTAL CONSIDERATION
The anendment involves a change to a surveillance requirement with respect to the installation or use of facility components located within the. restricted area as defined in 10 CFR Part 20 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 that there has been no public comment on such finding. Accordingly, this amendment meets the eligibility criteria for categorical exclusion set forth in 10 CFR 151.22(c)(9).
Pursuant to 10 CFR $51.22(b), no environmental impact statement or environmental assessment need be prepared in connection with the issuance of the 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 public will not be endangered by operation in the proposed manner, and (2) 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:
January 30, 1986 Principal Contributor:
Thomas V. Wambach