ML19344D550
| ML19344D550 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 04/03/1980 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML19344D547 | List: |
| References | |
| TAC-13056, NUDOCS 8004250012 | |
| Download: ML19344D550 (2) | |
Text
.
e5 584 A
9 U /.
.k UNITED STATES f Ds G g NUCLEAR REGULATORY COMMISSION g -((7..
3l WASHINGTON, D. C. 20555 g-
}
SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR' REGULATION SUPPORTING AMENDMENT NO. 29 TO FACILITY OPERATING LICENSE N0. DPR-72 FLORIDA POWER CORPORATION, ET AL CRYSTAL RIVER UNIT NO. 3 NUCLEAR GENERATING PLANT DOCKET NO. 50-302 Introduction By letter dated November 21, 1977, Florida Power Corporation (FPC) proposed changes to the primary containment surveillance requirements for Crystal River Unit No. 3.
We issued Amandment No. 24 to FPCs operating license on September 6,1979 which identified the unresolved issue of tendon wire lift-off force.
FPC was requested to supply additional information and revised Technical Specifications (TSs), which FPC submitted by letter dated February 15, 1980.
Discussion The proposed TS incorporate the recommendations of Regulatory Guide 1.35, " Inservice Inspection of Ungrouted Tendons'in' Prestressed Concrete Containments", Proposed Revision 3, April 1979 including the method of selecting the number of tendons for inspection, detensioning requirements, and evaluation criteria; include testing of partially retensioned dome tendons; and delete the. acceptable strain level for radial reinforcement as a required consideration in evaluating chan,es in elevation.
We have completed our review of the method of selecting the number of tendons for inspection and detensioning requirements.
We will continue our review of FPCs February 15, 1980 proposal with our evaluation resulting in a separate licensing action.
Evaluation The methad of selecting the number of tendons for inspection is changed from the current arbitrary numbers of six dome, five vertical, and ten hoop, to a percentage of the tendon population in each group with limitations on the minimum and maximum number of tendons to be inspected.
The number of tendons in the representative sample remains the same for the first three tests, but increased from 9 to 11 tendons for subsequent tests if abnormal degradation is not observed.
The revised sample size is in conformance with the recommendations in Regulatory Guide 1.35, Proposed 4evision 3, therefore' the proposed change is acceptable Tne number of tendons requiring detensioning during an inspection is reduced to a
-iH
. of one tendon per group (dome, vertical, noop) instead of detensioning all the tendons selected for inspection.
Tnis change is in conformance with the recc=endations in Hegulatory Gutde 1.35, Proposed Revision 3, therefore it is acceptable.
800dagog d
Environmental Consideration We have determined that the amendment does not auth:rize a chance in effluent types'or total amounts nor an increase in power level and will not result in any significant environmental impact.
Having made'this determination, we have further concluded that the amendment involves an action which is insicnific' ant from the standpoint of environmental impact and, pursuant to 10 CFR 151.5(d)(4), that an environmental impact statement, or negative declara-icn and environ-
. mer.tal impact appraisal need not be prepared in cc.nnection with the issuance of this amendment.
Conclusion We have concluded, based on the considerations discussed above, that:
(1) because the amendment does not involve a significant increase in the probability or consequences of accidents -previously considered and does not involve a significant decrease in a safety margin, the anencment does not involve a significant hazards cor. sideration, (2) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manreer, and (3) such activities will be conducted in compliance with the Commission's reculations 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: April 3, 1980 W '