ML17341B521

Forwards Turkey Point Unit 3 Containment Structure Post- Tensioning Sys:Tenth-Yr Surveillance & Turkey Point Unit 4 Containment Structure Post-Tensioning Sys:Tenth-Yr Surveillance. W/O Rept for Unit 4

ML17341B521
Person / Time
Site:	Turkey Point
Issue date:	12/03/1982
From:	Robert E. Uhrig FLORIDA POWER & LIGHT CO.
To:	Eisenhut D Office of Nuclear Reactor Regulation
Shared Package
ML17341B522	List: ML17341B521 ML17341B523
References
L-82-522, NUDOCS 8212170273
Download: ML17341B521 (6)

Text

REGULATORY I.'RMATION DISTRIBUTION SYST M (BIDS)

ACCESSION NBR:8212170273 DuC DATE: S2/12/03

~ NOTARIZE: NO DOCKET FACIL:50-250 Turkey Point Plant< Unit 3i Florida Power and Light C 05000250 AUTH, NAME AUTHOR AFFILIATION UHRIGg R,E ~ Florida Power 8 Light Co ~

RE'C IP, NAME RECIPIENT AFFILIATION EISENHUT~D>G, Division of Licensing

SUBJECT:

Forwar ds "Tur key Point Uni,t 3 Containment Structure Post-Tensioning Sys:Tenth>>Yr Surveillance" 8 "Turkey Point Unit Containment Structure Post"Tensioning Sys:Tenth-Yr Surveil'l.ance," ))/o rept- for Unit 4 ~

Sat. RafTC ~d~2 c roW l4, DISTRIBUTION CODE: A001S COPIES RECEIVED:LTR ENCL+~ SIZE TITLE: OR Submitta.l: General Di.stribution NOTES:

RECIPIENT COPIES RECIP IENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL NRR ORB1 BC 01 7 7 INTERNAL: ELD/HDS4 1 0 NRR/DL DIR 1 N AB 1 0 NRR/DSI/RAB 1' FILE 04 1 1 RGN2 1 1 EXTERNAL ACRS 09 6 6 LPDR 03 '5 1 1 NRC PDR 02 1 1 NSIC 1 1 NTIS 1 1 TOTAL NUMBER OF COPIES REQUIRED: LTTR 23 ENCL '1

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+If//g FLORIDA POWER & LIGHT COMPANY December 3, 1982

.L-82-522 Office of Nuclear Reactor Regulation Attention: I1r. Darrel G. Ei senhut, Director 1

Division of Licensing U. S. Nuclear Regulatory Commission Washington, D. C. 20555

Dear Hr. Eisenhut:

Re: Turkey Point Units 3 8 4 Docket No. 50-250 8 50-251 Ten Year Tendon Surveillance Reports Please find attached twenty copies of the Turkey Point Units 3 & 4 Ten Year Tendon Surveillance for your use. The surveillances, required by Turkey Point Technical Specification 6.9.3.b, were conducted from January through April 1982. The surveil'lance for each unit consisted of physical i nspections and .

lift-offtests for nine tendons (three dane, three vertical, and three horizontal tendons). For each unit, one wi re was removed from each of three tendons for inspection and tensil e testing.

The attached reports detail the findings of the tendon inspections tests. It has been concluded that the post-tensioning systems in the Unit 3 5 4 con-tainment structure are performing within the limits set by their design criteria and specifications.

The report for Turkey Point Unit 3 contained several recaIImendations in Section 8. The following are the responses to those recommendations:

RECOMMENDATION 8.1a The water seal for the tendon pit covers for vertical tendons 23Vl and 45V7 should be inspected and replaced if found to be inadequate or damaged.

ACTION REQUIRED 8.1a During the Unit 3 Ten Year Tendon Surveillance, the tendon pit covers for vertical tendons 61V1, 23V1 and 45V7 were sealed by replacing the checkered plate cover over a silicone rubber caulking canpound. No further action is required per this recommendation.

RECOI1NENDATION 8.1b 8 c The pits for vertical tendons 23V1, 45V7, and 61V1 should be inspected at six-month intervals to ensure that no voter is seeping through the covers into the pits. A maintenance program should be established to carry out this inspec-tion. If the presence of water is observed in any of these tendon pits, im-mediate corrective action should be taken to rPJIIove the water and replace any ~+A 82i2170273 82i203 It~0 PDR ADOCK 05000250

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Office of Nuclear Reactor Regulation Page 2 damaged materials. In addition, the water sealing of the pits should be up-graded in accordance with details to be provided by Engineering.

ACTION REQUIRED 8.1b & c The pit cover seals are being evaluated in order to pr event water from seeping.

into the pits. Once the evaluation is complete and modifications, if any, are implemented, a periodic inspection program will be developed.

RECOtlt<ENDATION 8.2a & b, 8.3 During the next scheduled tendon sur veil lance, remove one wire each from tendons 61V1 and 61Y2. If the level of corrosion in both of these wires is acceptable (i.e., level 1 or 2), no further action is required.

If pitting of Level 3 or greater is observed on either of these wires, metal'-

lurgical examination of the test samples should be made to determine the cause of deterioration. Corrective action should be determined by Engineering, based on the results of the metallurgical examination.

Even though buttonheads for tendon 1053 (close to buttress 1) were conpletely covered with sheath filler, some pitting of these buttonheads has been ob-served. If in the next tendon surveillance the level and/or amount of pitting is seen to have progressed; Engineering should evaluate this condition and recommend corrective action at that time.

ACTION REQUIRED 8.2a & b, 8.3 The evaluation by our Architect-Engineer is not yet canplete. The recan-mendations above will be evaluated upon ccmpletion of that effort.

Very truly yours, Ro er E. Uhrig Yic President Advanced Systems & Technology REU/JEM/js Attachments cc: Nr. James P. O'Reilly, Region II Hr. Harold F. Rei s, Esquire

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