ML14183A065
| ML14183A065 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 10/28/1986 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML14183A064 | List: |
| References | |
| NUDOCS 8611140125 | |
| Download: ML14183A065 (2) | |
Text
o UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO. 107 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 By letters dated July 17, 1984, and February 5, 1986, Carolina Power & Light Company (the licensee) proposed certain changes to Technical Specification (TS) 4.4.1.1.c and the associated Bases section. These changes would remove a specific requirement that the duration of containment integrated leakage rate tests (CILRTs) be at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, and replace it with a more general requirement that the duration of the tests shall meet the requirements of Appendix J to 10 CFR 50, and ANSI N45.4-1972, "Leakage-Rate Testing of Containment Structures for Nuclear Reactors."
Furthermore, the proposed Bases would state that, if a CILRT of a duration of less than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> were attempted, the test would meet the provisions of Bechtel Topical Report BN-TOP-1, Revision 1, dated November 1, 1972, "Testing Criteria for Integrated Leak Rate Testing of Primary Containment Structures for Nuclear Power Plants."
Evaluation 10 CFR 50.54(o) requires all plants to conduct CILRTs in accordance with Appendix J to 10 CFR 50; Appendix J further requires that such tests be conducted.in accordance with ANSI N45.4-1972. Therefore, the proposed revision to TS 4.4.1.1.c. would reference the appropriate regulatory requirements and is thus acceptable.
ANSI N45.4-1972 requires that the duration of CILRTs shall be at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, with one exception. To quote from the standard, "If it can be demonstrated to the satisfaction of those responsible for the acceptance of the containment structure that the leakage rate can be accurately determined during a shorter test period, the agreed-upon shorter period may be used."
The staff has reviewed and approved Bechtel Topical.Report BN-TOP-1, Revision 1, in a safety evaluation report dated January 15, 1973. The staff, therefore, finds it acceptable for the licensee to use the BN-TOP-1 testing procedures and acceptance criteria for CILRTs at H.B. Robinson, Unit 2.
The licensee's original submittal, dated July 17, 1984, proposed to use only one section (Section 2.0) of BN-TOP-1. The staff informed the licensee that this was unacceptable, and the licensee subsequently committed, by letter dated February 5, 1986, to employ the complete Topical Report. However, they did not at that time revise their proposed Bases section. By telecon on August 26, 1986, between the NRC staff and CP&L, the licensee agreed to a 1 8611140125 861028 PDR ADOCK 05000261, P
-2 rewording of the Bases section. Therefore, the February 5, 1986, supplement to the application did not alter the proposed conclusions of the no significant hazards consideration published in the Federal Register on November.21, 1984.
Environmental 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 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 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: October 28, 1986 Principal Contributor:
J. Pulsipher