ML14183A160
| ML14183A160 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 04/27/1990 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML14183A159 | List: |
| References | |
| NUDOCS 9005040217 | |
| Download: ML14183A160 (3) | |
Text
PRv REGt0 4-1 0
UNITED STATES s
NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO. 126 TO FACILITY OPERATING LICENSE NO.
DPR-23 CAROLINA POWER & LIGHT COMPANY H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO.
2 DOCKET NO.
50-261
1.0 INTRODUCTION
By letter dated December 10, 1982, the NRC issued Generic Letter 82-28, "Inadequate Core Cooling Instrumentation System."
Licensees were asked to install an inadequate core cooling instrumentation (ICCI) in accordance with Item F.2 of NUREG-0737. The ICCI at H. B. Robinson Steam Electric Plant, Unit No. 2 consists of the reactor coolant system subcooling monitor (RCSM),
the reactor vessel level indicating system (RVLIS) and the core exit thermocouple (CET).
By letter dated February 13, 1990, Carolina Power & Light Company (CP&L) requested an amendment to the TS to incorporate the provisions for the RVLIS and the CET by adding Notes 7 and 8.
2.0 EVALUATION The licensee has proposed the following actions for the RVLIS and CET as part of TS Table 3.5-5, "Instrumentation to Follow the Course of an Accident."
For RVLIS (Note 7 is used):
With the number of OPERABLE channels one less than the MINIMUM CHANNELS OPERABLE requirement, restore the inoperable channel to operable status within 7 days, or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
With the number of OPERABLE channels two less than the MINIMUM CHANNELS OPERABLE requirement, restore at least one channel to operable status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />, or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
However, for the remainder of Cycle 13 and Cycle 14, Note 7 above is superseded by the following under "*":
h~i5iY.27 900427 PDR ADOCK 05000261 P
-2 With the number of operable channels one less than the MINIMUM CHANNELS OPERABLE requirement, restore the inoperable channel to OPERABLE status within 7 days or prepare and submit a Special Report to the Commission within the following 14 days outlining the action taken, the cause of inoperability, and the plans and schedule for restoring the system to OPERABLE status.
With the nunber of operable channels two less than the MINIMUM CHANNELS OPERABLE requirement, ensure the availability of an alternate method of monitoring the reactor vessel inventory.
Restore at least one channel to operable status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> and prepare and submit a Special Report to the Commission within the following 14 days outlining the action taken, the cause of inoperability, and the plans and schedule for restoring the system to OPERABLE status.
For CET (Note 8 is used)
With the number of operable thermocouples, one less than required by the MINIMUM CHANNELS OPERABLE requirements, restore the inoperable thermocouples to operable status within 7 days or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and<350aF within the next 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
With the number of operable thermocouples two less than the MINIMUM CHANNELS OPERABLE requirement, restore at least one channel of thermocouple to OPERABLE status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be in at least HOT SHUTDCWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and <350'F within the next 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
We have reviewed these specifications for RVLIS and CET and find them consistent with the GL 83-37 "NUREG-0737 Technical Specifications" guidance.
Therefore, the Note 7 and Note 8 action statements for RVLIS and CET, respectively, are acceptable. In addition, a request was made to use a modified action statement for Note 7 as discussed above until Cycle 15 for gaining operational experience.
We find this request acceptable.
Finally, the surveillance requirements of the RVLIS and the CET are added to Table 4.1-1 and we find the request for these additions, acceptable.
3.0 ENVIRONMENTAL CONSIDERATION
This amendment changed a requirement with respect to installation or use of a facility component 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 off site; 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
-3 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 or environmental assessment need be prepared in connection with the issuance of this amendment.
4.0 CONCLUSION
The Commission made a proposed determination that this amendment involves no significant hazards consideration, which was published in the FEDERAL REGISTER (55 FR 8220) on March 7, 1990, and consulted with the State of South Carolina. No public comments or requests for hearing were received, and the State of South Carolina did not have any comments.
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.
Principal Contributor: T. Huang Dated April 27, 1990