ML20239A241
| ML20239A241 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 09/10/1987 |
| From: | Fay C WISCONSIN ELECTRIC POWER CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| Shared Package | |
| ML20239A243 | List: |
| References | |
| CON-NRC-87-93 VPNPD-87-390, NUDOCS 8709170202 | |
| Download: ML20239A241 (13) | |
Text
{{#Wiki_filter:-- . . f ... l Wisconsin Electnc eowca coueur 231 W. MICHIGAN. P.O. BOX 2046, MILWAUKEE.Wl 53201 (414)277 2345 VPNPD-87-390 NRC-87-93 September 10, 1987 CERTIFIED MAIL
-U. S. NUCLEAR REGULATORY COMMISSION Document Control Desk Washington, D.C. 20555 Gentlemen:
' DOCKET 50-301 ENERGY ABSORBER APPLICATION POINT BEACH NUCLEAR PLANT, UNIT 2 ,
on May 13, 1986, Wisconsin Electric proposed the use of energy absorbers as replacements for hydraulic snubbers in selected locations at the Point Beach Nuclear Plant (Reference 1). After receiving responses to requests for additional information, and after conducting an independent analysis through Brookhaven National Laboratory, the.U. S. Nuclear Regulatory Commission approved the use of energy absorbers on the-main steam bypass line in Unit 1 on April' 10,~1987. The" Safety Evaluation Report which provided that approval (Reference 2) ' stated that the NRC approval did not extend to systems at Point Beach Nuclear Plant other than the one specifically. addressed in the SER, but rather that future proposed applications of energy absorbers would have to be reviewed on a case-specific basis. The purpose of this letter, in compliance with the SER requirements, is to inform the NRC of our plans to replace seven hydraulic snubbers with five energy absorbers on the main steam bypass line in Unit 2 during the fall 1987 outage. The fall 1987 Unit 2 outage is scheduled to begin on October 2, 1987, and last through November 13, 1987. To aid the NRC's review process, the following information is provided.
- 1. The intended Unit 2 system for energy absorber application, the main steam bypass line, is the same system as in the Unit 1 application.
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'Page 2-l "2. . The Unit 2 system with energy, absorbers as' replacements j for hydraulic snubbers has been' analyzed.with the same analysis. methodologies, ME 101 computer program, response' spectra, and other pertinent input data as those used in the'analysisfof the Unit 1. system. A-summary-of the Unit 2 analysis results is attached, along with similar results from the Unit 1 analysis.
Specifically, modal damping comparison. sheets, stress ! summary sheets, and support load summary sheets for 3 Units 1 and 2;are attached. A review of the summary of . ; the results indicates.that the general system responses a of both units with energy absorbers are similar, and that pipe stresses and support loads are within the allowable values.
- 3. _Although the geometry _and. location of pipe supports of the Unit 2 system are not identical to Unit l ~, they are j similar. A hand-marked copy of Bechtel Drawing P-207 ;
Revision 4 (attached)-shows the pipe routing and- ! support locations for the main steam bypass line in ! Unit 2, including the proposed energy absorber , locations as assumed in the analysis. For reference l purposes, Bechtel Drawing P-107 Revision 5 is also ! attached, which shows similar information for Unit 1. l
- 4. The size, type, and quantity of energy absorbers ;
proposed for Unit 2 are identical to those used for ! Unit 1. The locations of the energy absorbers on the bypass lines are similar. Seven snubbers will be ! replaced with five size EA4SS-5 energy absorbers, as follows: Snubber Removed Energy Absorber Installed 2R-EB-2-1 2EA-EB-2-1 2R-EB-2-2 none 2R-EB-2-3 2EA-EB-2-3 2R-EB-2-4 I 2EA-EB-2-4 2R-EB-2-5 2EA-EB-2-5 ; 2EA-EB-2-6 2R-EB-2-6 2R-EB-2-7 none
- 5. The same design, material, fabrication, and I documentation requirements for the energy absorbers l that were used for Unit 1 will also be applied for Unit !
- 2. These requirements are in accordance with ASME Code I Case N-420.
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NRC Document Control Desk September 10, 1987 Page 3
- 6. A walkdown of the modified Unit 2 pipe run will be performed and documented to ensure that there are no adverse interactions with adjacent safety-related equipment due to increased piping displacement during a seismic event.
- 7. The plans for the inservice inspection of the Unit 2 energy absorbers will be identical to those established for the Unit 1 energy absorbers.
- 8. As explained in Reference 1, the damping ratios, in some cases, exceed the generic system damping ratios used in the original design of the plant. We will amend the PBNP FSAR to include the use of energy absorbers in Unit 2 following installation of the equipment.
Pursuant to the requirements of 10 CFR 170.21, we understand that this approval is subject to a $150 application fee. Our check in this amount payable to the U.S. Nuclear Regulatory Commission is enclosed. The replacement of hydraulic snubbers with energy absorbers will help to reduce extensive inservice inspections, functional testing, and maintenance programs, and will lead to improved system reliability. Please contact us if you require additional information regarding this replacement. Very truly yours, []lJg C. W. Fay Vice President Nuclear Power Enclosures (C:leck 969708) Copies to NRC Regional Administrator, Office of Inspection and Enforcement, Region III; NRC Resident Inspector
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4 References
- 1. WE letter VPNPD-86-207, NRC-86-40, C. W. Fay to H. R.
Denton, " Energy Absorbers as Replacements of Snubbers for Seismic Support of Nuclear Piping Systems, Point Beach Nuclear Plant, Units 1 and 2.," dated May 13, 1986.
- 2. " Safety Evaluation Report, Point Beach Nuclear Plant, Energy Absorbers as Replacements for Snubbers on the Unit 1 Main Steam Bypass Line," dated April 10, 1987.
j.
Frequency and Damping Table E10447-1 Rev 1 E10447-2 Rev 0 Unit 1 Unit 2 DAMPING FREQUENCY DAM 9fNG MODE FRE0VENCY (CPS) (CPS) t .878770 .000915 .989545 .024279 1.43097% .007825 1.454792 .007512 2 .010608 3 2.046095' .008361 2.067420 4 2.843989 .149237 2.600829 .199497 3.147704 .009118 3.066316 .014033 5 8 3.374652 .006388 3.373953 .014663 3.576698 .015261 3.488080 .043292 7 .Oldt13 8 3.779936 .015309 3.690073 3.868663 .005585 3.803577 .007002 9 .070658 10 4.084570 .007791 3.970704 4.142341 .040550 4.044890 .021857 11 .009521 12 4.283055 .004424 4.224218 4.427533 .038958 4.310199 .029421 13 .006529 14 4.822743 .007231 4.567153 4.880340 .011998 4.778846 .005146 15 5 4.842579 .005529 4.797529 .011666 18 .026190 17 5.069422 .010535 5.070823
.005052 5.103079 .005080 18 5.215758 5.221959 .017277 19 5.295212 .009447 5.394706 .015947 5.683974 .029607 20 5.928893 .009181 6.103676 .025073 21 6.188881 .005184 22 S.2725t2 .005012 8.869975 .005453 6.431302 .126104 23 6.575385 .015608 24 S.726831 .005487 S.893799 .006271 6.665793 .0t37t6 25 7.055527 .012820 6.697287 .033800 26 6.750171 .019867 27 7.070629 .004413 7.2542tt .005039 6.807907 .009352 28 6.944361 .015304 29 7.7773f2 .005962
.006002 7.135055 .009828 30 7.951291
.007334 7.547526 .007127 El 7.963394 7.766350 .005062 32 S.000143 .004076 .005029 33 S.054425 .005564 7.876474
.005512 7.906267 .006509 34 S.065431 7.933748 .006911 35 S.179608 031069 8.035535 .005289 34 8.256642 .007207 8.051839 .008022 37 8.629948 .028100 .026833
.027876 8.270432 38 R.838711 9.021654 .005051 39 9.114127 004923 .005281
.010010 9.092973 40 9.244438 9.20813t .005545 41 9.416148 .005006 9.255521 .005002 43 g,441054 .02383t 9.278910 .008978 43 9.689922 .Of30tt 9.518209 .005003 44 10.02t197 .041156 9.552832 .005004
.007257 45 10.363293 9.669053 .005004 46 10.526717 .00647t 9.936148 .006642 47 10.529942 .005064 .005317
.005t46 10.157663 48 10.682812 10.304387 .006423 49 10.956527 .006295 10.555501 .005088 50 99.129487 .005541 10.629319 .005004 59 1t.343985 .006905 .005373
.005882 10.840699 52 11.479415 10.957784 .013167 53 11.635248 .005567 11.106060 .020168 B4 12.264657 .027536 11.351072 .005258 55 12.425202 .0123tt 11.451968 .006385 56 12.540336 .005871 11.717530 .006026 57 12.643802 .005413 12.072789 .017955 58 12.944959 .005209 12.200771 .005067 59 13.076190 .005552 12.430283 .010097 60 13.184328 .005003
PIPING STRESS
SUMMARY
CHECK AND COVER SHEET N8 ANSI.B31.1 f SHEET OF rROJECT: POINT BEACH 10447-044 PLANT DESIGN GROUP JOB NO. SYSTEM: MAIN STEAM OUTSIDE CONTAINMENT 4 ISO NO. P-207 REV NO. CALC. NO. _ E 10447 -2 DESIGN MAXIMUM ALLOWABLE C;i CK:"./ PLANT LOCATION .DAT4-CONDITION OF MAX. LOADING COMBINATION COMPUTED STRESS PSI OPERATING STRESS PSI AND [ ANSI CONDITON PIPE STRESS PAR A. REF.) "
' DESIGN PRESS. ATMPSIG 5616 SUSTAINED NOR 680 15,000 LOADS WE10HT & SUSTAINED LOAD 7348 EON.11 SUM }ggg4 DESION PRESS. AT EPSIG 8157 OCCASION AL 18,QQQ
'[2]
i eon.12 UPSET 145 WElGHT & SUSTAINED LOAD CAT 1 MAX. OCCA8'ONAL LOAO- OBE 27 4 5228 sum I" " I 4 13659 DESIGN PMESS. AT MPS10 "4 8157 27,000 WEl HT & SUSTAINED LOAD 274 FAULTED 145 CAT 1 MAX. OCCASIONAL LOAD- SSE 10041 Suu I" "l 8 18472 Psio kh DEsiow PRESS. AT WElGHT & SUSTAINED LOAD OCCASIONAL LOAD. SUM (k = 1 OES40N PRESS. AT1085 Psia 5616 "4 CAT III
"" * " AN N 9623 36.000 862 fN y 5 OPER- OCCASIONAL LOAD- SSE 18666 NON-SEISMIC ,,
PORTION ABILITY) ,, SA THERMAL EXPANSION THERMAL EXPA $ ANCHOR MOVEMENT (OSE) gyg ,
- E QM.13 Dell 1N PRESS. AT 1085.PSio MAX. OPER 5616 THERMAL .
EXPAN D60M MIGHT & SUSTAINED LOAD 1062 37.500
***'" THERMAL EXPANSION 26805 ANCHOR MOVEMENT (OBE)
SUM 33483
- EITHER EON.13 OR EON.14 MUST BE MET REFERENCE CALCULATIONS:
2"O OTHERS: WEl0HT 2-R SEISMIC tlNERTIA PORTION) N/A
$ THERMAL EXP.
2-8 SEl5MIC (ANCHOR MOVEMENT) __ E JilGNATUSE j DATE
SUMMARY
NAME / ANDREW YAN MCh B-/ 7-8 7 PREP ARED BY
' ' ' Ns/ 4 // d _' 8-2a -M
/
REVIEWED BY APPROVED BY KEY CH01 CHil Y. CHERN "7 W-
- g. PIPING STRESS
SUMMARY
CHECK AND COVER SHEET ANSI 831,1 g SHEET l PROJECT: _ Point Beach , JOB NO._ 92N PLANT DESIGN GROUP
)
SYSTEM:_ Mains h N tside REV NO. 5 ISO NO. P-107 CALC. NO. __4/0 94 7 '/ MAXIMUM ALLOWABLE CHECKER / 0 ' PLANT LOCATION COMPUTED STRESS PSI DATE CO DIT ON OF MAX. LOADING COMBINATION OPERATING STRESS PSI AND(ANSI CONDITON PIPE STRESS PAR A. REF.! " DESIGN PRESS. AT1085 Pao M16 SUSTAINED ~ LOADS wEioHT a SUSTAINED LOAD *1372 15'000 (10s.S.11 ttxmal 762 sum 12988 EaN.11 I3h DESIGN PRESE. AT19E.5PS40 gig 7 CCCASIONAL
'O'88 wEloHT a SUSTAINED LOAD 464 18,000 Upset 6021 ENsf Cat. I Max. OCCASIONAL. LOAD. OBE 5 sum 14642 [K 1.23 l
\
g7q7 A% DESIGN PRESS. AT1031PSIG wEl0HT & SUSTAINED LOAD 464 27,000 / I Faulted Cat. I Max. OccAStoNAL LOAD SSE 11R2O Su" 20441 f 5 PSIG DESIGN PRESE. AT wEl0HT & SUSTAINED LOAD OCCASIONAL LOAD-SUM Ik* 1 k8h l DESIGNPREM. ATIEPSIG gig ' CAT. III Sys. Max. Fadited 818 wEioHT a SUSTAINED LOAD 6547 ircluding 36'000 ocCAStoNAL LOADSSE 19697 Non-seismic 2.43 M" sum 31860 [K SA THERMAL EXPANSION THERMAL EXPANSION ANCHOR MOVEMENT 005E1 I (104.8.3Al SUM
- EON.13 DESIGN PRESS. AT19$.5 PSlo 5616 THERMAL Max. Oper . ,
EXPANSION tdETP. WEIGHT & SUSTAINED LOAD 670 0 521 deg.F 6604 Berd # ' f,'d* 'g'I THERMAL EXPAN880N 26873 ANCHOR MOVEMENT 40SE) g SUM g3ggg
- EITHER EON.1'3 OR EON.14 MUST BE MET REFERENCE CALCULATIONS: OTHERS: N/A wtloHT 2-21 SElSMIC (INERTIA PORTION) . 2-21 SEISMIC (ANCHOR MOVEMENT)
N/A E THERMALExP. 2-21 , DATE E
- NAME ,. SIGfiATURE 9I 3 E
SUMMARY
h M. Y. Dong (M W PREPARED BY REVIEWED SY H. M. Ice W%G * } 6 _ O _ 2f - / 3 - Wr R / z,I dM" APPROVEo SV L. E. Shipley @ ()VR t2_
'N S% Wset Mt f&& r 1s47 Se samtv ne5lW7he- Ws5W Afd NSAub h - .
____ ____. _ NM M bN .. @ P
f.- 1 POINT BEACH GENERATING PLANT MAIN STEAM OUTSIDE CONTAINMENT--CALC E10447-2 REV O
-ENERGY ABSORBER APPLICATION SUPPORT IDADS (LBS) r-fo7 HGR LOAD COLD FAULTED DATA WT OBE SSE UPSET ,
TYPE DIR. THRM SPRING j PT ==== ' 5654 9552 6144 10042 FX 587 -36 -61 120 RAD 1501 3217 21332 23048 FY -8645 26 -11212 21186 120 RAD 55 119 9759 17557 13388 130 RAD FX 3455 4872 47930 50376 49007 -262 -3241 2426 130 RAD FY 9784 18770 63882 72868 FY -22820 1113 -32391 15667 24791 140 RAD 2639 137 12891 22015 144 RAD FZ -5109 26197 52911 65382
-9015 -377 -29793 13726 305 RAD FY 3515 6131 11246 13862 FY 4409 114 -7845 24886 325 RAD 60 10513 18489 16910 !
FX 6325 12 18053
'335 RAD
-102 -9169 2299 4199 16153 335 RAD FY -4$83 9699 22168 25990 !
-16305 47 -33 5877 340 RAD FX 1886 3577 22211 23902 l 340 RAD FY 2053 57 -20382 19575 23366 154 -6964 6866 10657 534 RAD FY -5899 5129 7006 8916 5516 -100 -3687 3219 555 RAD FY 2526 5813 4467 7754 542 1404 -5 555 RAD FZ 809 1231 5297 5719 l FY -1856 204 -2836 3813 575 RAD -2865 467 754 3526 l 580 RAD FY 850 -194 3672 4002 l 33 -3173 438 768 600 RAD FY -94 689 6024 6338 l 1325 -290 -5359 375 603 RAD FY 3933 6562 8354 10983 !
FX -4401 -126 106 3147 630 RAD -1487 811 1085 2873 630 RAD FY -212 -363 779 2528 2615 501 192 -2028 692 650 RAD FY 305 490 1061 1246 . FY 302 195 -951 2759 I 704 RAD -1903 720 1014 2465 728 RAD FY 234 158 1103 1292 l 76 -875 304 493 750 RAD FY 528 14324 15724 ;
-468 -2899 1874 3274 776 RAD FY -9083 4880 4147 6486 l 1310 220 76 2541 781 RAD FZ 923 1645 3114 3836 FY 2958 203 -2394 6513 786 RAD
~5538 456 936 6033 l FY 809 -39 4177 789 RAD 34 -1384 898 1583 3492 l 300 RAD FY -1244 894 1982 1946 3034 f FY 237 -23 -1029 881 1216 l 807 RAD -383 484 819 FY 414 -14 2479 829 RAD
-5 -1051 709 1423 1765 l 851 RAD FY 498 1399 1257 2199 i 1242 4 -446 457 ;
871 RAD FY 5561 8004 8785 11228 FZ 5930 -3303 597 8143 i 500 EAB 0 -61 3967 7088 5022 535 EAB FZ -994 8257 8153 11000 FZ 5213 -2508 38 5410 7928 577 EAB 273 4319 7509 4738
'EAB FX ~692 0 10859 784 0 -231 2210 6460 6609 l 790 EAB FX 4630 1
[ j l 4 f
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d/dV47~/ Xfu o 6 fan'ATURE DATE POINT BEACH GENERATING PLANT Oricinator 7 % fe d K E./J f) MAIN STEAM OUTSIDE CONTAINMENT Checker u 6//" 5-ENERGY ABSORBER APPLICATION SUPPORT LOADS (LBS) F-/07 IDADl COLD FAULTED l DATA HGR WT OBE SSE l UPSET DIR.l THRM SPRING ._~-_l PT TYPE -----------1 g ------- 51 78 4406 8513 l 8078 12185 l 120 RAD FX l ~3801 2630 l 19615 20980 l 36 -12056 1265 120 RAD FY l -6330
-66 -184 6168 12031 l 9113 14976 l 130 RAD FX l -2695 2475 4750 l 41134 43409 l 41445 -377 -2409 130 RAD FY j 9603 18958 l 49277 58632 l FY l -10469 1456 -30661 27287 l 140 RAD 3639 189 11825 23459 1 15653 144 RAD FZ l -2571 -726 -29129 13279 27818 l 62292 76831 l 305 RAD FY l -19158 147 -7102 3573 7152 l 10528 14107 1 325 RAD FY l 4790 18678 l 14433 23250 l
-4470 2 -104 9861 335 RAD FX l -139 -10628 2218 4432 1 18260 20474 1 335 RAD FY l -5275 -103 48 3928 7580 l 7501 11153 [
340 W.D FX i 3628 2769 l 11824 13141 l 2734 96 -10468 1452 l 340 RAD FY l 120 -4582 4596 10714 l 10173 16291 l 535 RAD FY l -1115 1814 4215 l 6354 8755 1 1605 -109 -4431 555 RAD FY l -3 1106 2005 l 2396 3295 l 555 RAD FZ l -53 1293 3845 4638 l 297 -1857 874 1667 l 575 RAD FY l -1411
-328 -3635 642 1360 l 4605 5323 1 580 RAD FY l 1305 2067 l 9101 10102 l 133 -18 -8017 1066 600 RAD FY l 182 -137 2202 4209 1 6846 8853 l 628 RAD FX l 4599 2326 2801 l 457 -559 -767 1000 1475 l 628 RAD FY l -1676 560 607 1 2035 2082 l 650 RAD FY l 505 201 943 1182 l 323 202 -840 305 544 l 704 RAD FY l 163 -1847 478 740 l 2162 2424 l 728 RAD FY l 269 1334 1660 l 593 82 -1099 317 643 l 750 RAD FY l -1673 1400 3130 l 5752 7482 l 776 RAD FY l -2612 -67
-24 2716 5418 l 4840 7542 l 781 RAD FZ l -3193 1093 7998 9538 1 36 -29 ~6126 1843 3383 l 790 RAD FY l 45 -1231 1283 2008 l 3186 3911 l 800 RAD FY l -717 1818 2318 l 230 -23 -826 969 1469 l 80'/ RAD FY l -9 -340 567 898 l 916 1247 l 829 RAD TY l 380 1735 2189 l 450 6 -817 924 1378 l 851 RAD FY l 22 -361 544 1050 l 1348 1854 1 871 RAD FY l 1143 10644 13011 l 9601 -4825 599 5269 7636 l 500 EAB FZ l 0 ~54 3172 5151 l 4177 6156 l 535 EAB FZ l 1059 8256 10239 l 5148 -2527 -51 5678 7661 l 577 EAB FZ l 0 -178 2740 4941 l 2983 5184 l 784 EAB FX l -65 0 214 3006 3965 l 6526 7485 l 790 EAB FX l -3734
OVERSIZE DOCUMENT PAGE PULLED SEE APERTURE CARDS
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NUMBER OF OVERSIZE PAGES FILMED ON APERTURE' CARDS l APERTURE CARD /HARD COPY AVAILABLE FROM RECORD SERVICES BRANCH,TIDC FTS 492-8989 {
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