ML14183A054
| ML14183A054 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 08/25/1986 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML14183A053 | List: |
| References | |
| NUDOCS 8609180414 | |
| Download: ML14183A054 (2) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO. 102 TO FACILITY OPERATING LICENSE NO. DPR-23 CAROLINA POWER AND LIGHT COMPANY H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2 DOCKET NO. 50-261 INTRODUCTION Carolina Power and Light Company, the licensee, requested in a letter dated September 12, 1985, revisions to their Technical Specifications for Robinson 2.
These revisions result from the replacement of the steam generators at Robinson 2. The changes to the Technical Specifications reflect the as-built conditions at the plant, specifically a steam flow rate increase of 5% and deletion of obsolete references to a steam generator repair program.
In addition, the licensee requested that Section 3.J be deleted from the Operating License. Section 3.3, Steam Generator Repair Program, was added to the license by Amendment 77 on February 28, 1984, for the steam generator replacement construction program at H.B. Robinson 2.
EVALUATION The replacement of the steam gnerdtors resulqed in an increase in the total steam flow rate from 9.59 x 10 to 10.11 x 10 lb/hr. The new flow rate is 0.4% greater than the capacity stated in the 9asis of Section 3.4 of the Technical Specifications, which is 10.07 x 10 lb/hr. However, the licensee asserts that the actual comgined relief capacity o the twelve main steam safety valves is 10.22 x 10 lb/hr, not 10.07 x 10 lb/hr. The revision to the Technical Specifications will reflect the actual relief capacity and the actual as-built steam flow rate.
The twelve main steam safety valves have d total combined capacity which exceeds the total full power steam flow rate by 110,000 lb/hr. Following a.
loss of load, which represents the worst case transient, steam flows are lower than the-total capacity of the twelve safety valves. The twelve safety valves will be able to relieve the total steam flow if necessary and over pressurization of the secondary system is highly unlikely. Therefore, the proposed revision to the H.B. Robinson Unit 2 Technical Specifications is approved.
Section 3.3 of the Operating License, Steam Generator Repair Program, was added by Amendment 77 dated February 28, 1984.
The purpose of this conditio was to impose certain requirements for the duration of the Steam Generator Repair Program. The Steam Generator Repair Program was completed in early 1985; therefore the requirements of Section 3.J are no longer applicable.
86OP PD09180414I R ADO 808-)
J
-2
SUMMARY
Based on the above discussions, we find that the licensee's reouests to revise the Technical Specifications to reflect the as-built near steam generator steam flow rate and the request to delete Section 3.J from the Operating License acceptable.
ENVITPONMENTAL CONSIDERATION This amendment involves a change in.the installation or use of a facility component located within the restricted area as defined in 10 CFR Part 20.
The staff has determined that the amendment involves no sionificant 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 invclves no significant hazards consideratior and there has been no public comment on such findino. Accordingly, this amendment meets the eligibility criteria for categorical exclusion set forth in 10 CFR 51.22(c)(9).
Pursuant to 10 CFR 51.?(b) no environmental impact statement or environmental assessment need be prepared in connection with the issuance of this amendment.
CONCLUSION We have 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.
Dated: August 25, 1986 Principal Contributors:
G. Requa R. Karsch