ML19329D545
| ML19329D545 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 03/08/1977 |
| From: | Stolz J Office of Nuclear Reactor Regulation |
| To: | Rodgers J FLORIDA POWER CORP. |
| References | |
| NUDOCS 8003160144 | |
| Download: ML19329D545 (2) | |
Text
g
~
"r..
r Distribution w C
Docket Filer
. W. Reid NRC PDR C. Nelson NAR 8 1977 Local PDR AC,RS (16)
LWR 1 File V. Stello
.4 D. B. Vassallo K. Goller F. J. Will.iams j;
Docket No. 50-302 E. Hylton Flo'rida Power Corporation h
ATTH: Mr. J. T. Rodgers J. Knight Assistant Vice President R. Tedesco and Nuclear Project Manager H. Denton P. O. Ilox 14042 V. A. Moore St. Petersburg, Florida 33733 R. H. Vollmer M. L. Ernst Gentlemen:
W. P. Gammill m
SUBJECT:
REACTOR CONTAINMENT DOME SURVEILLANCE
. (CRYSTAL RIVER UllIT 3 NUCLEARGENERATINGhlb)
We have reviewed your letter dated January 31, 1977, in response to the condition in the operating license related to the surveillance program to determine any future delamination of the containment dome at Crystal River Unit 3.
In your letter you propose that the current surveillance i
program, as defined in the plant Technical Specifications, provides an adequate program, and thati additional surveillance is not required for the reasons that you have stated in your letter.
Based on our review of your response, we conclude that the reasons given for not perfoming any additional surveillance of the containment done are not acceptable.
The containment iome as repaired is a hybrid structure consisting of the original prestressed concrete overlaid with an unprestressed reinforced concrete repair cap. The potential differences in long-tem creep between the old and new concrete could contribute to future delamination and
- cracking of the new cap.
In our judgment, the surveillance requirements that are in accordance with Regulatory Guide 1.35, " Inservice Inspection of Ungrouted Tendons in Prestressed Concrete Containment Structures,"
which were developed for structures which have not exhibited any structural defect, do not provide for the repaired structure at Crystal River Unit 3.
Accordingly, we require that you reassess your proposal and provide us with a proposed surveillance progran that is responsive to our requirenent for additional surveillance of the containment dome for the purpose of detectino any future delamination.
bec:
J. R. Buchanan, NSIC f$$
T. B. Abernathy, TIC
~
~
' rrice >
o suman ess >
onve >
Pasa ABC 310 (Rev. 9 33) ABCM 0240 W u. e. novenmusm? Paintino orreces so?4.sae.see 6003160 M f
O
.o NAR 8 1977 Florida Power Corporation _
If you have any further questions regarding this matter, please contact us.
Sincerely.
', Original Signed Ig' John F.Stolz i-John F. Stolt, Chief Light Water Reactors Branch No.1 Division of Project Management i
cc: Mr. S. A. Brandimore Vice President and General Counsel l
~_
P. O. Box 14042 St. Petersburg, Florida 33733 i
I e
oprica, <
R1 LW M 34$1o/ red Jd
....i...
,./Mf/.77 3/[/77 Poems ABC.318 (Rev. 9 33) ABCM 0240 1lt u. s. oovsmaassm? Paintino oprices eon.eas. tee
-.