ML18046B080

Containment Bldg Post-Accident Sys 10-Yr Surveillance Rept.

ML18046B080
Person / Time
Site:	Palisades
Issue date:	10/31/1981
From:	CHAO K N, DOWNS M, SALLEY A M CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML18046B079	List: ML18046B078 ML18046B080 ML18046B081 ML18046B083 ML18046B084
References
GWO-5158, NUDOCS 8111230490
Download: ML18046B080 (28)

Text

CONSUMERS POWER COMPANY* PALISADES NUCLEAR PLAN'!' CONTAINMENT.BUILDING POST-ACCIDENT.SYSTEM TEN-YEAR SURVEILLANCE REPORT OCTOBER 1981 Bechtel Associates Professional Corporation Ann Arbor, Michigan f811i230490 811117 ' : PDR ADOCK 05000255 p PDR * . Job 12447-066 GW0-5158 Prepared By: Checked By: Reviewed By: Approved

.. ** CONSUMERS POWER COMPANY PALISADES NUCLEAR PLANT TEN-YEAR TENDON SURVEILLANCE REPORT October 1981

• Ten-Year Tendon surveillance Subjob 12447-066 Section l.O 2.0 3.0 4.0 5.0 6.0 7.0 October 1981 TEN-YEAR TENDON SURVEILLANCE REPORT TABLE OF CONTENTS Title INTRODUCTION

SUMMARY

AND CONCLUSIONS SHEATHING FILLER AND END ANCHORAGE INSPECTION TENDON LIFTOFF FORCE TENDON WIRE INSPECTION TENDON RETENSIONING AND RESEALING REFERENCES APPENDIXES 2 4 6 7 8 9 APPENDIX 1 -Palisades Nuclear Generating Station veillance Procedure 12447-006-TSFT-2(Q), Ten-Year Tendon Surveillance, Revision 4 APPENDIX 2 -Surveillance Field.Data APPENDIX 3 -Laboratory Report on Sheathing Filler Sample Analysis APPENDIX 4 -Laboratory Report on Wire Specimen Tests APPENDIX 5 -Ram Calibration Report iii Table 1 Table 2 Table 3 Table 4 -Laboratory Analysis TABLES Ten-Year Tendon Surveillance Subjob 12447-066 October 1981 of Sheathing Filler -Summary of Tendon End Anchorage Inspection

-Summary of Force and Elongation Data During De tensioning

-Wire Test Results Table 5 -Summary of Force and Elongation Data During Retensioning Table 6 -Equation Used to calculate Liftoff Force's (kips) for 10-Year Tendon surveillances FIGURES Figure 1 -Location and Identification of Vertical and Dome Surveillance Tendons Figure 2 *-Location and Identification of Hoop surveillance Tendons Figure 3 -Hoop Tendons -

Force Versus Time Figure 4 -Vertical Tendons -Wire Force Versus Time Figure 5 -Dome Tendons*-Wire Force*Versus Time Figure 6 -Hoop Tendon Force Versus Time Figure 7, -Vertical Tendon Force Versus Time. F.igure

• 8. -Dome Tendon Force Versus Time iv

1.0 INTRODUCTION

Tendon surveillance Subjob 12447-066 October 1981 This report describes the 10-year reactor containment building tendon surveillance for the Palisades nuclear plant. The 10-year tendon surveillance is the fourth in a program with surveillances performed at 1, and 5 years after the containment structural integrity test and every 5 years thereafter.

The containment structure tendon surveillance program is a systematic means of assessing the continuing . quali.ty and structural performance of .the containment . post-tensioning system. The program consists of periodic inspection for *physical condition of a group of randomly . selected surveillance tendons. Information derived from the inspection provides a basis for confidence in the condition and fractional capability of the tendon system. If adverse conditions that might lead to tendon deterioration or malfunction are detected, discovery during the test provides an opportunity for timely corrective measures.

• Tendon surveillance testing consists of*anchor assembly and sheathing filler inspection, tendon.liftoff force measurement, continuity testing,*

tendon wire inspection and *tensile testing,*

and tendon retensioning and resealing.

The 10-year tendon surveillance program of the Palisades nuclear plant containment structure began in May 1981 and was completed

• in mid-July 1981. The surveillance was conducted in* accordance with Palisades Nuclear Plant surveillance Procedure 12447-066-TSFT-2(Q), Ten-Year Tendon Surveillance, Rev 4 (Appendix

1) , .which inc:;orporates requirements of USNRC Regulatory Guide 1. 35 (Reference

• 2) and *-The Palisades Nuclear. Plant Technical Specification,.

Paragraph 4.5.4, Amendment 31 (November 1, 1977) to Provisional Operating License No. DPR-20. This surveillance was performed in the.eleventh year foll.owing the completion of the containment structural integrity test, which falls in the allowed deviation from the prescribed .surveillance interval as permitted in Palisades.Technical Specification, Paragraph 4.0.2. There were three dome*tendoris,

• three hoop tendons, and three vertical tendons in the group . *selected for The location and identification of the surveillance tendons are shown in Figures 1 and 2.

• 2.0

SUMMARY

AND CONCLUSIONS 2.1

SUMMARY

Ten-Year Tendon Surveillance Subjob 12447-066 October 1981 The 10-year tendon surveillance of the Palisades nuclear plant was conducted from May to mid-July 1981. The final laboratory results were received and approved on August 19, 1981. Three dome tendons, three hoop tendons, a*nd three vertical tendons were selected for inspection.

The tendon surveillance consisted o*f inspection, sampling, and iabora tory testing of the sheathing filler; inspection of the tendon anchorage assemblies, measurement of the tendon liftoff forces; tendon wire visual inspection, continuity testing and tensile strength testing; and _retensioning and resealing the tendons. Visua.l inspection of the anchorage assemblies revealed no evidence of significant corrosion or cracking*.

The. shop end bearing plate of Tendon D-245 showed a small of corrosion involving flaking oxide. It is* located outside the border of the grease can gasket. Upon evaluation, it was not considered to be detrimental to anchorage integrity or load bearing _ ability. Sheathing filler material appeared normal except for the material at the field end of V-176 and the shop end of tendons D-335 and D-333, which showed evidence of free or emulsified water. Laboratory analysis of the filler samp],es collected confirmed this observation and indicated that for tendon D-333 the acceptance limit for chloride ions was exceeded in the sample from the shop end. In all instances in which sheathing filler sample:analysis showed results exceeding acceptance limits or were otherwise questionable, further action was taken td determine the. integrity-of the sheathing filler and the associated tendon,. Detailed examination of the involved tendon anchorages was performed and n.o significant corrosion was found. Analytical procedures on samples with questionable results were repeated and results from these samples were found to be within acceptable limits.

sheathing filler was found to have excessive water, tendon anchorages were degreased and the sheathing filler replaced.

The new f.i,.ller was then sampled and analyzed; the filler was found to be within acceptable limits. See Section 3.1, and Appendix 3 of this report for details of sheathing filler examination.

Tendon wires for visual examination and tensile strength testing were taken from. tendons D-245,

• V-176, and 67°BF, and two wires without buttonheads from tendon D-335 were removed for visual examination.

There was no evidence of corrosion on these specimens, and the resu*lts of tensile strength tests were within acceptarice limits. Every tendon tested had an average measured liftoff 'force within the limits specified .in Appendix 1. For hoop and vertical 2 Ten-Year Tendon Surveillance Subjob 12447-066 October 1981 tendons the limits are from 615 kips to 815 kips and for dome tendons from 584 kips to 815 kips. Each surveillance tendon was retensioned to within -0% to +5% of the liftoff force measured prior to detensioning.

Grease caps were installed and new sheathing filler was either pumped or poured into the tendon to replace filler removed during the *surveillance.

2

• 2 .CONCLUSIONS Based on the results of this tendon surveillance test involving .a sample of nine tendons, there is .no evidence of abnormal degradation in the containment structure post *tensioning system at the Palisades plant. Three of the examined anchorages contained filler with excessive water content, but there was no evidence that the water had caused corrosion of anchorage components or tendon wires. The lack of corrosion demonstrates that the filler material is satisfactorily performing its protective function.

In future surveillances, consideration should be given to scheduling a portion of the tendon surveillance during an outage to permit work directly over the main steam relief valve . discharge north of buttress D and adjacent to the unit's power transmission lines.* Randomness of tendon selection would thereby be improved.

3

Tendon surveillance Subjob 12447-066 October 1981 3.0 SHEATHING FILLER AND TENDON END ANCHORAGE INSPECTION 3.1 SHEATHING FILLER Samples of sheathing filler were taken from the end cap of each surveillance tendon, identified, and sent to the analytical laboratory where they were chemically analyzed for chlorides, nitrates, sufides, water content, and neutral.ization number by standard test methods. Results from analysis of the first samples-from the field end of tendon 67BF indicated high nitrate content and from the shop end indicated high chloride content. The tendon was regreased, and a sample was analyzed; the results of the new *sample were within acceptance limits.

• Filler samples from both ends of tendon D-245 indicated a low alkalinity number that was outside the stated test limits. Both ends of the tendon were regreased, and a second filler sample was submitted for analysis. .The results of these analyses were within acceptance limits. Filler from the shop ends of tendon D-335 and the field end of tendon V-176 contained free water, had a light yellow color, and the samples sent for analysis had reported water content in excess of the recommended upper limit of *f0% of dry weight. Filler samples from adjacent tendons D-333,. D-337 I V-174, and v-178 wei:.-e. submitted for analysis.

The .sample froin the shop end of D-333 indicated excessive water content and chloride concentration slightly higher than the 10 ppm acceptance limit. Other sample results were within acceptance limits ... The shop ends* of D-335 and D-333 and all tend.on V-176 were degreased using low-pressure air. Material removed was replaced with new sheathing filler. Chemical analysis of samples taken following replacement were well within acceptance limits. A detailed visual inspection of the tendon anchorages that had sheathing filler sample results in excess of acceptance limits was. made. They were found to be free of significant corrosion, and examination of wire samples disclosed no corrosion.along the length of the wires. 3.2 TENDON END ANCHORAGE Following the removal of each grease cap, the anchorage assembly components of each tendon were visually inspected to evaluate the coverage and effectiveness of the filler to prevent corrosion.

All hoop tendons and certain other tendons examined had a small void in the filler at the top of the can, but the metal surfaces of the anchorage components were coated with a continuous film of filler and appeared to be in an excellent state of preservation.

The portion of the bearing plate outside the grease can on the shop end of D-245 showed rusting and 4

. Ten-Year Tendon Surveillance Subjob 12447-066 October 1981 flaking oxide. This condition was confined to a.small area and is not considered detrimental to anchorage integrity.

The anchorage components were cleaned and visually examined for evidence of corrosion.

Following detensioning and before continuity testing, an examination was made for buttonhead size, cracking, and general condition.

No evidence of significant deterioration or unacceptable conditions was found. No cracking was observed.in bearing plates, shims, anchor heads, or washers. Eight offsize and nine split buttonheads were found. The split widths were estimated to be 0.010 inch, well within the acceptance criteria for buttonhead splits ( 0.060 inch as stated in the Five Year Tendon Surveillance Report, Appendix H). The wires anchored by each of the buttonheads showing a split are considered Two buttonheads on the field end of D-335 were missing. The wires involved were removed during the continuity check, and the wire ends showed signs of typical failure in tension at or near the buttonheads.

A careful search of the filler material did not locate the buttonheads and the conclusion was made that. the buttonheads failed during installation.

The discovery of water :in the filler*in D-335 and the subsequent finding of water in the adjacent tendon D-333 resulted in the visual inspection of the shop end anchorage of D-331. No evidence of corrosion or adverse. conditions was found. Ailchorage.inspection results are. summarized in Table 2. 3.3 CONCRETE BEARING SURFACES Visua,l.inspection of-the concrete surfaces around each of the _surveillance tendon end anchorages was performed and no significant cracks were observed.

5

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• 4.0 TENDON LIFTOFF FORCE Ten-Year Tendon surveillance Subjob 12447-066 October 1981 Liftoff forces were measured at both ends of the dome and hoop tendons and at the upper ends of the vertical tendons. All tendon liftoff exceed the lower acceptance limits, which are 615 kips for the vertical and hoop tendons and 584 kips for the dome tendons. All three vertical tendons, two hoop tendons, and one dome tendon exceed the predicted level. Two dome tendons fall marginally below the predicted level. Both of these tendons have fewer than 90 effective wires so this condition is expected.

Group means for the hoop and vertical tendons exceed the predicted value which reflects the contribution of the two tendons with less than 90 effective wires. Elongation measurements were made for each tendon during detensioning and retensioning.

A maximum limit of one and one-half times the as-found elongation was established by *Appendix 1 for the elongation at 80% of ultimate tensile . strength.

All measured elongations are within this limit. The three hydraulic rams used to measure liftoff _force for the_ 10-year surveillance were calibrated before the* surveillance at INRYCO's test facility.

The test equipment used is traceable to the National Bureau of Standards.

The three 0-10,000 psi gages were calibrated by the Consumers Power Company Palis.ades Instrument Laboratory; the test equipment used was also traceable to the National Bureau of Standards.

Data were reduced by standard linear regression methods.and the equations developed appear in Table 6. All hydraulic jacks met the acceptance criteria set forth in Appendix.1 thatthe standard deviation for individual data points from a linear regression line not exceed 10 The greatest standard deviation determined was kips. The test gages were checked by a dead weight tester during the surveillance and by the Palisades Instrument Laboratory following the surveillance . 6

• 5.0 TENDON WIRE INSPECTION 5.1 MISSING -OR DISCONTINIOUS WIRES Tendon Surveillance Subjob 12447-066 October 19e1 Two discontinuous wires were found in tendon When the filler can on the field end of the tendon was removed, two buttonheads on the anchorage end were missing. A careful search of the filler material produced no buttonheads.

During the detensioning and continuity*

check of D-335, the wires with missing buttonheads were removed and examined.

In each case the _wire had separated at or very near the buttonhead.

The physical appearance of the wire ends was typical of that observed in cases. of tensile fracture .. The remaining wires appeared to be normal in every respect. One wire in tendon D-245 had a clean machine cut end.and no buttonhead.

It was determined not to have been buttonhead during installation.

Except for the three cited above, all wires in the surveillance tendons were found t,o be continuous by the end-to-end continuity check. 5.2 WIRE TEST Wires to be examined for corrosion and tensile-strength were._ selected*

from tendons D-245, 67B:F, a:hd V-176. -Visual inspection of each of the sample wires., following removal, showed no . evidence of unacceptable corrosion or damage; all appeared to be in excellent condition.

Thr.ee tensile strength test samples, each of whlch was 12 feet long, were taken from.each of the selectedwires.

The samples were cut from each end and the middle of each wire, *identified, and* sent to Constimers Power Trail Street Laboratory for testing. The test results appear in Table 4 and are detailed in

• Appendix 4. *All wire specimens met or exceeded the 11.78-kip ultimate strength test specification and the 4%-elongation requirement.

• * . 7

-*:.. 6.0 TENDON RETENSIONING AND RESEALING Ten-Year Tendon Surveillance Subjob October 1981 Each s.urveillance tendon was retensioned to a new liftoff force within a range of from -0% to +5% of the liftoff value obtained prior to detensioning.

A summary of retensioning data appears in Table 5. Following successful retensioning of each tendon, the anchorage assembly of each end was coated with new sheathing filler and a grease cap with new gasket was installed.

Heated sheathing filler was either poured or pumped into the tendon sheath to replace filler removed during the test. The tendons were vented as necessary to faci!itate this Vertical tendons were vented through the filling plug hole of the top grease cap. Filler material was allowed to flow from the vent until an air-free flow of clean grease was verified.

8

• .

7.0 REFERENCES

Tendon surveillance , Subjob 12447=066 October 1981 1. Palisades Nuclear Station Final Safety Analysis Report, Section 4.5.4. 2. U.S. Nuclear Regulatory Commission, Regulatory Guide 1.35, Inservice Inspection of Ungrouted Tendons in Prestressed Concrete Containment Structures

3. American Society of Mechanical Engineers,Section III, Division 2, ASME Code for Concrete Reactor Vessels and Containments (1980) 4. Consumers Power Company, Palisades Nuclear Power Plant, Containment Building Post-Tensioning System Three-year Surveillance, February 1974. 5. consumers Power Company, Palisades Nuclear Plant, Containment Building Tendon surveillance/Five Year Surveillance, March 1976.* 9

• *-Shop or Tendon Field Number End vso s F Vl76 s F Vl74 F Vl78 F V306 s F 0132 s F 0245 s F 0333 s F 0335 s F 0337 s 67BD s F 67BF .g F 730F s F Acceptance . Lim.its from Section 11.D.l of Ref 1 TABLE 1 LABORATORY ANALYSIS OF Neutrali-zation Number Chlorides (mgKOH/gr) (ppm) 4.3 1.3 4.4 1.6 0.6 2.6 2.8 1.6 5.3 7 .2 .. 6.7 7.2 o.o 8.2 o.o 6.7 1. 7 1.8 1. 7 3.0 o.o 1.0 0.0 <l.O 0.8 11. 2* 0.3 <l.O 1.3 9.2 0.4 .3 .9 1.4 2.1 3.0 <l.O 3.3 1.1 1.2 1.9 . 1. 7 1.6 *1. 6 . 7 .*7 1.6 7.2 >0.07

• 10 Max *(optional}

Limits. *See text SHEATHING FILLER Water Solubles Water Nitrates Sulfides Content (ppm) (ppm) (% dry wt} 4.3 <0.1 0.4 7.4 <O .1 0.6 <1.0 <0.1. 8.7 1.1 <O.l 19.6* <1.0 <O.l 1.5 <1.0 <O. l 1.4 <l.O <O. l 0.6 <1.0 <O .1 0.6 <1.0 <O.l <0.1 <1.0 <O.l <O.l <1.1 <0.1 <0.1 <1.1 <O.l <0.1 5.2 <0.1 68.5* 1.0 <0.1 <0.1

• 1-.8 <1.0 . 17.8* 1.1 <1.0 0.3 1.3 <O.l <0.1 1.3 0.1 0.1 1.8 <O.l 0.2 2.6 . <O .1 0.2 <l.O <O.l 0.2 3.7 . 0 .4 1.6 <0.1 0.4 10 Max* 10 Max lOMax

'

0 z c .g c D 132 0245 0335 6780 . 67BF 73DF voso .* v11&. . V306. .. Filler Coverage Button head C*Covered N* *100% Covered Corro5ion Level Inspection "Cl c w "Cl 'ii i u:

• S! 5 CL = 6j c3 ::t ID s N c F c c s c c F N c s N c F N c s N c F N C* s N c F N c s N c F N c s c c *f c c *s N c* F .C c s N c F N c ... -u i s j ..

• I . N 1.?-lit l i .! ii5 a: E I f .! f ::t i§ !' !' i !' !' z ! "i e j i 1 e :& 'i ! a:*-0 o! ii ii 0 .. .! ::t. j .! U> m (I) z z zo. c N c N 1 1 1 1 2 90 0 () 0 c c NIA c 1 2 1 Nil 2 90 0 0 c c c c 1 2 1 2 4 89 0 0 0 c N NIA N 1 2 1 NII 2 89 0 1 c N c N 1 1 *1 2 2 90* 0 3 0 c c NIA N 2 2 2 l\11! 2 88 5 0 c N N N 1 1 1 1 2 .90 0 1 0 c c N 1 1 2 2 9() 0 2 c c N c 1 1 1 1 2 90 0 1 0 c c NII c 1 1: 1 " 2 90 0 1 c N c N 1 1 1 1 1 90 .o 0 0 c c N 1 1 2 "'" 2 90 .2 0 c c c c 1 1 2 2 2 90 0 0 o* c c NI c 1 1 2 N' 2 90* c c c c 1 1 1 ,. 2 90 0 0 0 c c c 1 1 1 N, 2 90 1 o* c c c N 1 1 2 1 2 90 0 0 0 *c N N 1 1 2 2 90 0 0 TABLE 2 SUMMAR.Y OF TENDON END ANCHORAGE INSPECTION 11 Missing Wires i B IS i ...... .5 g .!! ... = !' cB8 § E II i-w i-g i 0 "" "" -I i t: s -0 f -! = 1 z M. g I ! ! -I w ::a ::I-i ;:; & ! i w if 1

• ci .-:e m if . w :E z .s s 651.5 5.69 11.13 658.7 90 732 6/10/6.9 6/25/81 0132 F *665.9 5.44 --90 --. -s 699.4 4.81 9.50 624.3 . 89 6/24/69 6/15/81 0245 F 649.1 4.69 --89 ---s 644.7 4.88 10.10 636.2 88 7.23 6/16/69 6/2/81 0335 *F 61:1.7 5.22 --88 ---s 708.8 5.50 10.94 682.0 90 7.58 9/29/69 6/18/81 6780 F "655.2 5.44 --90 ---. s 638.2 5.81 11.97 643.2 90 7.15' 9/22/69' 6/12/81 .. 67BF F .* 848.1 6.,16 --90 ---s 661.9 730F 5.63 11.88 651.6 90 7.24 9122/69 7/1/81 F 641.2 1.25 -.... 90 *-. -*-s **657.o 13.25 . ..

657.0 90 730 9/2/69 8/22181' V50 f NA* 1.50 --90 --* -s 65.1.8 13.06 14JS1 . 851.8 90 7/8/81 *' .* Vf76 F NA 1.75 -' . ** --s 879.1 14.88 . 15.63 V306 879.1 90 "7.56 9/9/69 . 1n1S1:-*f NA *0.75 --90 -* --* ** TABLE 3

SUMMARY

OF FORCE AND ELONGATION DAT A .* . . DURING DETENSIONING . 12 **. . **.; . * ..

i . I TABLE 4 WIRE TEST RESULTS* Yield Ultimate Tendon Sample Stress Stress Elongation Number Point (ksi) (ksi)** (%) 67BF Shop 10.050 11.950 4.50 Middle 10.200 12.025 4.50 Field 10.075 12.000 4.60 0245 Shop 10.550 12.350 4.70 Middle 10.500 12.300 *4.90 Field 10.450 12.300 5.40 Vl76 Shop 10.750 12.750 5.95 Middle 10.800 12.750 6.40 Field 10.650 12.640 5.80 *Consumers Power Company Tensile Test Procedure MS-T7 was used. **Required minimum ultimate strength 11. 78 ksi in accordance with Specification 4.6.1.6.lr (ksi) =kips per ,square inch.

• w ci z a; ii: .. c 0 CD Q. .... 0 65 s 0132 F s 0245 F s 0335 F leo s F s 67BF f:. s .730F F s .V50 F .. s V176 F $ V306 F 1000 LB/WIRE x ULT STRENGTH LIFTOFF AFTER RETENSIONING

--1 -ff Ill .. ti .. -I c 0 ! II !' a w 90 2.0 90 2.3 88 1.50 88 1.88 88 1.25 88 1.88 90. 1.50 90 2.25. 89 2.25 89 2.25 90 2.50 90 2.19. 90 2.13 90 2.56 89

• . 89 2.56 IO *3.13 90 2.56 -! z ! *--1 i -s f ! s f Ill 'i -.:: .. s i2

• 8, j -., -g g 8 I iii c w m 0 ! .* m a; .i 0 !' ..... * .... 0 ii:i 4.3 848.3 6.13 13.76 680.8 -5.56 12.44 -. 848.3. 7.63 -693.9 6.88 -3.38 829A 5.88 11.51 594.7 5.13 10.32 -829.4 5.63 -653.0 5.19 -3.13 829.4 6.38 11.76 645.8 6.38 .11.48. *-829.4 5.38 -650.6 5.10 -.3.75 848.3 5.75 12.75* 735.1 5.63 11.82 -848.3 7.00 -682.3. 6.19. -4.50 838.8 7.75. 14.75 639.3 .6".06 12.94 -838.S 7.00 -647.3 . 6.88 -4.69 S.U.3 7.2'5 "14.81-674.5 6.22 13.03 -848.3 7.56 -651.4 6.81 -4.69 848.3 14.81 17.37 667.6 13.31 15.87 . -NA *. 2.56 -* NA . 2.56. -. . 4.50 838.9 14.00 16.56 . 845.8 . 13.56 16.12 .. -NA 2.56 -* NA 2.56 -5.69 848.3' . 14.75 17.31 699.2 14.56 17.12 -NA 2.56 NA 2.56 -TABLE 5 .

SUMMARY

OF FORCE ANO ELONGATION.*

DAT A DURING RETENSIONING 14 2' ! 'g . i!' i .... -1'§ *o.§ j'j ti . ti a: Cl s. W GI 0 .a: CJW .! 0 z ... Q 1.31 90 6/25/81 0.82 88 6/15/81 1.38 88 . 6/3/81 0.88 90 6/19/81 . *-90 -*o.97 89 . 6/12/81 -89 1.15 90 7/1/81 *-90 .1.12 90 6/23/81 1.31 . 89". 7/9/81 -89 1A9 90 1n1B1 -90

• • TABLE 6 EQUATION USED TO CALCULATE LIFTOFF FORCE (KIPS) FOR 10-YEAR TENDON SURVEILLANCE Ram Number (With Either Gage) 9177 9184 9187 Where P = Gage Pressure in ksi F = Tendon Forc.e in kips F F F Eguation = l50.761P 0.198 = 150.916P -2.003 = 151.390P -2.672

• NORTH r. oo D VERTICAL TENDONS PLAN

• F 1800 DOME TENDONS PLAN S-SHOPEND F-FIELD END FIGURE 1 -LOCATION AND IDENTIFICATION OF "VERTICAL AND DOME TENDONS BUTTRESS A B *AZIMUTH 86° 250 87BF EL. 709' -

GRADE LINE '* c D E 325q 2660. 2050 73DF EL 710'-e* 67BD ROOF LINE ,, ROOF LINE DEVELOPED ELEVATION* . FIGURE 2 LOCATION AND IDENTIFICATION OF *HOOP SURVEILLANCE TENDONS f . 1460 EL 72'1 -10 . 'G

/ 67BF LINEi BOTTOM OF RING GiRDER EL 748' 6" EL 688' 6" TOP OF BASE SLAB I I I' ** SEMl-l_OG/\lll°t J IMIC

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'-----------------------------------

---30 0 40

• • * * --I I ,. rMAXIMUM ALLOWABLE LIFTOFF 815 KIPS --* I ,.. MEAN LOSS .. CURVE -----.. (Jl -Q 720 -BD-63 -----630 w BD-67 u DF-56 '0 . 0:: DF-68 "" . --------------

'

-DF-73 -. -AE-49_ /MINIMUM ALLOWABLE DF-76 z i'0 BF-66 -?BF-67 0 LIFTOFF 0 BD-80 BF-79 615 KIPS z

• BD-59 -lll ..___ I "Z <( w 2: FIGURE 6 HOOP TENDON FORCE vs TIME ' 540 1 " 2 3 4 5 10 20 30 40 TIME AFTER

___

__

• * . '810

• rMAXIMUM ALLOWABLE

.. . . . LIFTOFF 815 KIPS .. ' ; I I I /MEAN LOSS --CURVE* l/) -n...

v ---.. __,,.. w u V86 V306

• C!f' -0 LL --rMINIMUM ALLOWABLE z

0 . v 176 LIFTOFF 0 615 KIPS z w v i-:-720 630 -z <( w 2: FIGURE 7. VE RTICAL TENDON FORCE vs TIME : 2 3 4 5 10 Tl"lfJ:" /\l="Tf:-".

20 30 40 (yr-/\ pc\ ..

• I I rMAXIMUM ALLOWABLE LIFTOFF 815 KIPS **a10 ' -VI 720 -a.. -I MEAN LOSS ' -; w CURVE . u D 151* a:: --f2 * .. I'..-

_... U ........,;

ALLOWABLE z LIFTOFF 0 0249 . D335 0 10 . LD133 Wo245 584 KIPS z --w r-if I 630 z I <( w :2: . FIGURE B DOME TENDON FORCE vs TIME *.* 5401 2 3 4 5* 10 20 I ' ! I I ". T .,.-r rr-1 r-. ' II I I'"' *

• APPENDIX 1 Palisades Nuclear Generating Station Surveillance Procedure

• 12447-006-TSFT-2(Q), Revision 4, Ten Year Tendon Surveillance A-1