ML12342A104

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MPR-3796, Seismic Walkdown Report in Response to the 50.54(f) Information Request Regarding Fukushima Near-Term Task Force Recommendation 2.3: Seismic, Revision 1, Part 2 of 12
ML12342A104
Person / Time
Site: Limerick Constellation icon.png
Issue date: 11/06/2012
From: Schlaseman C S
Exelon Generation Co, MPR Associates
To:
Office of Nuclear Reactor Regulation
References
RS-12-171 MPR-3796, Rev 1
Download: ML12342A104 (34)
v • d • e


Text

Sheet 1 of 2 Status: & N U Seismic Walkdown Checklist (SWC)Equipment ID No. 1OB515 Equip. Class" (01) Motor Control Centers / Low & Medium Voltage Switchgears Equipment Description D114-D-G DIESEL GEN AREA SAFEGUARD 480VMCC Location:

Bldg. Diesel Floor El. 217 Room, Area Room 311A Generator Building Manufacturer, Model, Etc. (optional but recommended)

On tlr Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings.

Additional space is provided at the end of this checklist for documenting other comments.Anchorage 1. Is the anchorage configuration verification required (i.e., is the item one of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware?3. Is the anchorage free of corrosion that is more than mild surface oxidation?
4. Is the anchorage free of visible cracks in the concrete near the anchors?YXNEI YIg'NEI UEj N/AEO YO~NO UEJ N/A[: UE- N/AE1 5. Is the anchorage configuration consistent with plant documentation?

Yý NEI UF] N/AE](Note: This question only applies if the item is one of the 50% for -which an anchorage copfipuration verification is required.)

Ae'AO6.AY, j)teede o tu Convvwm.t

'is cU&"t#~c$

b~fr/6. Based on the above anchorage evaluations, is the anchorage free of Y['NOI UE-potentially adverse seismic conditions?

1 2 Enter the equipment class name from Appendix B: Classes of Equipment.

<C-3 >Limerick Generating Station Unit 1 MPR-3796, Revision 1 rnrrmnnnHP~nr.P Nn

  • RA-19-171 C-34 Sheet 2 of 2 Equipment ID No. 10B515 Equip. Class" (01) Motor Control Centers / Low & Medium Voltage Switchgears Equipment Description Dll 4-D-G DIESEL GEN AREA SAFEGUARD 480VMCC Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?
8. Are overhead equipment, distribution systems, ceiling tiles and lighting, and masonry block walls not likely to collapse onto the equipment?

m7 ' fW C 61V' oIM ) tI 4HF r ujI&.o V*eM'A ( C(191E TA/4 ;s &Z(S T014P/ hMA4 FVLJ.9. Do attached lines have adequate flexibility to avoid damage?.(iT,, D C~K,ro(J tfA .LovL -p- pc'/10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?YWNEI-I U- N/AD YINEANI U- N/AD Y['/NDI U- N/AD YW/N'I U[I Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YF(ND" UE" adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary).,e phEJ j-Pic --l1dA '/k./ z x_ (" c'l-..--.T -6 t4,~.4 'te~ J ;A' .h th '4. .. r P ir Co re.AC_ U34-.%af) lv-s-t 6h Li(~I -4,tE. coý4J-' C/ " 4) ~Lt 6-' I C.If-' /-, -I -A,11 A %Evaluated by: Date: h lqf A4AP A-)/ F -Limerick Generating Station Unit 1 C-35 MPR-3796, Revision 1 rnrr.nnndPnr.P Nn R.9-19-171 (S4Jc PINfl 1.2.tbB~~~) PKG. NO.2 ; SECTION~ ~L WN ON US _______________f-E 5tC am$ ---U-- -OR of 212

  • mpat NMIm ~( (4oSov C0C41kO L CN-A AIR Arq, (0 2. NOW £uw MTR I_________i,..
3. Siam CC Nzqin A/p 4. VW~,C CArrLe.C--

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Iytc. 60 '0 ews 5. It tim `mz -' a mobinot pai P M m mý Wdi~t 1 CC the d"10"m SIw~deb _ _ _ __ _ _ _-SE-M- A('rc4IjAN-r 40 a. Apponmwa f"lrgi Set..r1,N C#ASwtifr Llje.F-VP b. vlaualcuam 2.o"W%I 90"1 A20" b my...sreo IoN o. 11~ts600 Lau. vPSL stc,~-noe4

7. Zmaticms Daflhlags Sefeffi P64D[ ?UOIWoSF-

/DIE6rL JemaBL C -/Yb14 CzP4~~ ou 4.c~rý (r'(l E 3 _ _ _ _ _ _ _ _ _ _ _5. PbalngWitatim Ce~og.= Cm flow *vlendh mopgud.ON FL.OOP- TOP-BRAC6" 0.a. ftftm in *ihldaau~ds 4f V AC 34, 1 0-2m 3fttuithw Limerick Generating Station Unit 1 .'MPR-3796, *Revision 1 ---- --- --- ...-r.nrrp~qnnnfli-.nlf-P Nn -Rq-192-171I Equipment ID: 10B515 Limerick Generating Station Unit 1 MPR-3796, Revision 1 rlnrrP~nnndPnr.P Nn R.R-19-171 C-37 Sheet 1 of 2 Status: f9N U Seismic Walkdown Checklist (SWC)Equipment ID No. 10CO01 Equip. Class 1 2 (16) Instruments on Racks Equipment Description Division I Core S&ray System Instrument Rack Location:

Bldg. Reactor Floor El. 217 Room, Area Room 304W Enclosure Manufacturer, Model, Etc. (optional but recommended)

Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings.

Additional space is provided at the end of this checklist for documenting other comments.Anchorage 1. Is the anchorage configuration verification required (i.e., is the item one of the 50% of SWEL items requiring such verification)?

Yp NEI 2. Is the anchorage free of bent, broken, missing or loose hardware?

YA NE UL" N/AL]3. Is the anchorage free of corrosion that is more than mild surface YX NO U[] N/AL]0xidqtion?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YX NOI UO N/AL]5. Is the anchorage configuration consistent with plant documentation?

YP NO UL] N/AL](Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

_ P. 1*AnAcna 4,ý4ft~ mý4h byn we QuoA4e cO £ No, &E-IO .Re'v. o ((.E ec Am -O O 6. Based on the above anchorage evaluations, is the anchorage free of Y;K NOI UO potentially adverse seismic conditions?

'2 Enter the equipment class name from Appendix B: Classes of Equipment.>" Limerick Generating Station Unit 1 MPR-3796, Revision 1 rnrP.n nnnHPn nn "RWR-19-171 C-38 Sheet 2 of 2 Equipment ID No. 1 OCOO1 Equip. Class' (16) Instruments on Racks Equipment Description Division I Core Spray System Instrument Rack Interaction Effects 7. Are soft targets free from impact by nearby ei or structures?

Q~~~.harJ~%

11Nhi rct YN ND U0 N/AD 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YX ND UD N/AD and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines hyve equate flexibility to avoid damage?10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?YkEND UD N/AD Yk ND UD Other Adverse Conditions
11. Have you looked for and found no other seismic conditions that could Yk ND UD adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary)

'v/A Evaluated by:&MA A--Date:--X7< C-4>Limerick Generating Station Unit 1 MPR-3796, Revision 1 rnrrP.nndnnrA.

Nn

  • Rq-19-171 C-39 Equipment ID: 10CO01 Limerick Generating Station Unit 1 MPR-3796, Revision 1 (.nrrp.nnntlnr.P.

Nn

  • R5-19-171 C-40 Equipment ID: 10CO01 Limerick Generating Station Unit 1 MPR-3796, Revision 1 CrnrrPqnnnrlPnr.iP Nn -R5q-i-1-71 C-41 Equipment ID: 10CO01 II I I I Limerick Generating Station Unit 1 MPR-3796, Revision 1 rnrrPqnnndePnr'P Nn* RR-19-171 C-42 Equipment ID: 10CO01 Limerick Generating Station Unit 1 MPR-3796, Revision 1 rlnrra~nnndPnr.P Nn
  • R,-19-171 C-43 Shee iof 2 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No. 10C027 Equip. Class'2 (16) Instruments on Racks Equipment Description Located Behind HCUs next to the Drawell Personnel Hatch Location:

Bldg. Reactor Floor El. 253 Room, Area Room 402E Enclosure Manufacturer, Model, Etc. (optional but recommended)

Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings.

Additional space is provided at the end of this checklist for documenting other comments.Anchorage 1. Is the anchorage configuration verification required (i.e., is the item one of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware?3. Is the anchorage free of corrosion that is more than mild surface oxidation?
4. Is the anchorage free of visible cracks in the concrete near the anchors?Y) NO.YPQ NEI U- N/AD YX NE U- N/AD YX N[l UE- N/A[D 5. Is the anchorage configuration consistent with plant documentation?

Yk NEI UE- N/AD (Note: This question only applies if the item is one of the 50% for which an anchorage configur tion velrfication is required.)) -IO) Rev. 0 (6 E 'p& INo. Aoo-o01Lo VoL.2.) ev,4)6. Based on the above anchorage evaluations, is the anchorage free of YI NEI UD potentially adverse seismic conditions?

12 Enter the equipment class name from Appendix B: Classes of Equipment.

< C-3 Limerick Generating Station Unit 1 MPR-3796, Revision 1 CnrrPqnnndPnr.P.

Nn -RR-17-171 C-44 Sheet 2 of 2 Equipment ID No. I 0C027 Equip. ClassL2 (16) Instruments on Racks Equipment Description Located Behind HCUs next to the Drywell Personnel Hatch Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?.No sor 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, and masonry block walls not likely to collapse onto the equipment?

9. uorat schd lin es hve c rility oari daage?bo+I n6+ n~a 9. Do attached lines have adequate flexibility to avoid damage?YA NE U"I N/AEI YXNED UD N/AD Y 4 MA; N1 /YXNEI UE1 N/AEl 10. Based on the above seismic interaction evaluations, is equipment free NX UD of potentially adverse seismic interaction effects?141V ;.i P~CO' 5P~eA Z4+jor? IU E -O()00 (ReV. r)Other Adverse Conditions
11. Have you looked for and found no other seismic conditions that could Y) NE-! UQ adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary)

It, , n oI cI ir~s?464e) pe 0 r 1: VrI~AkA Evaluated by: Date: i4'LiZ .Limerick Generating Station Unit 1 MPR-3796, Revision 1 Nn

  • RR-19-171 C-45 Equipment ID: 10C027 I Limerick Generating Station Unit 1 MPR-3796, Revision 1 rnrrqnnnlPnrP Nn -R,-19-171 C-46 Equipment ID: 10C027 Limerick Generating Station Unit 1 MPR-3796, Revision 1 (C.nrr.nnnr1.nrP Nn* RR-17-171 C-47 Sheet 1 of 2 Status: O N U Seismic Walkdown Checklist (SWC)Equipment ID No. /0 e W' Z Equip. Class" 2 (18) Control Panels & Cabinets Equipment Description Reactor Recirc Pan1el Location:

Bldg. Controe Floor El. .4L Room, Area (3.- Structure Manufacturer, Model, Etc. (optional but recommended)

Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings.

Additional space is provided at the end of this checklist for documenting other comments.Anchorane 1. Is the anchorage configuration verification required (i.e., is the item one of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware?Cvui d 47 V.(r 4 y W~j,&II US.i 1 CAV,ý,,O 6Ar ftohltw ', ve(-;d,e.(5et
  1. 5), Oviei-elV
,-tmw st 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

YN[I Uf- N/AOD N/-eA-4(-YCNI-I UI-I N/A[-1 4. Is the anchorage free of visible cracks in the concrete near the anchors? Y)6 NEI UI N/A'"" .-7 5. Is the anchorage configuration consistent with plant documentation?

jP '- UF' N/A)(Note: This question only applies if the item is one of the 50% for which an. ancrage configjration verificationy required.)

V OVNtd hbi &P fA ( n ,t 4 Sol f, p-l " 1 0 *A 4,q. It (.3-6. Basdoe W4 above.nc~horage evaluations, is the anchorage free of YX ND UD potentially adverse seismic conditions?

_,.oeA, the equimen c n-lasn-,:f.

ro " n 12 Enter the equipment class name from Appendix B: Classes of Equipment.

Limerick Generating Station Unit 1 MPR-3796, Revision 1..

Nn* R.9-19-171 C-48 Sheet 2 of 2 Equipment ID No./a e"O Z Class" 2 (I8@ Control Panels & Cabinets Equipment Description Reactor Recirc Panitl Interaction Effects 7. Are soft targets free from impact bypearby equipment or structures?

YVkgND UO N/AD 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO ND ULJ N/AD 3 as onry block walls not likely to collapse onto the equipment?

9. D oattahe lines deque W/i &lbet totevo Ld ii Ai D UD N/A 9. Do attached lines have adequate flexibility to avoid damage? YKlj NDI UEJ N/AD 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?% ND UD Other Adverse Conditions
11. Have you looked for and found no other seismic conditions that could NDI UD adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary)

Date: /Limerick Generating Station Unit 1 MPR-3796, Revision 1 rlnrrP.ýnnnrspnr.P Nn " RR-19-171 C-49

(~sv~c IOC'602.)1.4.5 Termination Cabinets The frames and enclosures of Limerick termination cabinets are the same size and structurally identical to the tested termination cabinet (Reference 4). The only difference between the Limerick cabinets and the tested termination cabinet is the quantity and location of termination modules. This will not affect the structural capability of the cabinets.

The TRS envelops the RRS as shown in the Appendix, Fugure 4.2.These cabinets are located in the Control Room, elevation 269'.The SQRT forms for the Class IE Termination Cabinets (P700 series) are contained in Section 3.1.4.6 Floor Mounting 1.4.6.1 AuxiliaryZ quipment Room, 289' Elevation Panels located in the Auxiliary Equipment Room are mounted on PGCC floor sections.

As shown in Ref. 5, sections similar to those at Limerick were tested to determine if there were any amplifications of accelerations to the panels. Panel accelerometer readings show that the floor sections actually reduce the transmissibility on the tested panels by as much as 10 percent. This is due to structural damping. The results presented in this report consepvatively assume that the 3floor sections are rigid, and no credit is taken for the reduced transmissibility.

1.4.6.2 Control Room, 269' Elevation Panels located in the control room (and C61-POOl) are bolted to a 4" base which is welded to the floor. This base was on the tested Limerick H12-P601, P603, and P661 panels. Examination of test data in panels without this base shows no appreciable difference in transmissibilities.

The base is therefore assumed rigid.1-8 Limerick Generating Station Unit 1 C-50 MPR-3796, Revision 1 Cnrrqnnnrt.nrA Nn -RR-19-171 Equipment ID: 10C602 Limerick Generating Station Unit 1 MPR-3796, Revision 1 flnrrn-nnndP~nrA Nn* RR-19-171 C-51 Equipment ID: 10C602 I I Limerick Generating Station Unit 1 MPR-3796, Revision 1 r.nrrP.nnndPnr.P Nn -PS-1-171 C-52 Equipment ID: 10C602 r4 C6, Limerick Generating Station Unit 1 C-53 MPR-3796, Revision 1 nrrnmnnndp~nrc Nn

  • Sheet I of 2 Status:{ N U Seismic Walkdown Checklist (SWC)Equipment ID No. //' Equip. Class 1 2 (18) Control Panels & Cabinets Equipment Description 4M"Reactor

/, ontrol Panel Location:

Bldg. Control Floor El. q2674 Room, Area Room 53-3 Structure Manufacturer, Model, Etc. (optional but recommended)

Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings.

Additional space is provided at the end of this checklist for documenting other comments.Anchora2e 1. Is the anchorage configuration verification required (i.e., is the item one YEr N10 of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware?

NINEI U[] N/Al]8 ~1*I.~ ;v c(ti 4 ( gee *6). ovecd(a~ft ref~-iw"C- "I ;n 3. Is the anchorage free of corrosion that is more than mild surface Y< N[] U-I N/A["D oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? Y02kI UO N/AD 5. Is the anchorage configuration consistent with plant documentation?

YEI NEI Ut] N/A((Note: This question only applies if the item is one of the 50% for which an anchor~age configuration verification is required.)

6. Based on the above anchorage evaluations, is the anchorage free of Y[W NEI U potentially adverse seismic conditions?

,.W13lc 6ee,,,f.(.

2 enter the equipment class name from Appendix B: Classes of Equipment.

<C-3 -" Limerick Generating Station Unit 1 C-54 MPR-3796, Revision 1 rnrrPqnnnrdPrnr-e-Nn -R5-1?-171 Sheet 2 of 2 Equipment ID No. t0 C 6'03 Equip. Class 1 2 (18) Control Panels & Cabinets Equipment Description Main Reactor / Reactiviv Control Panel Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, and masonry block walls not likely to collapse onto the equipment?

M4d';s' "(5 b1"'n, 6f 0 e~I~ -41~9. o adauat llxnes iabit avoid damage?10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Y6(NE U" N/All YgýNF- UE' N/A-UD N/AU)!g]D UED Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could )go o UD adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary)$ ..../1: lZI.-Al-Z

-Evaluated by iL"/ý A -Date: 9/311, g I ý< C-4>Limerick Generating Station Unit 1 MPR-3796, Revision 1 Nn -R-1 9-171 C-55 (sTv4c loc-603) j 10 1.4.5 Termination Cabinets The frames and enclosures of Limerick termination cabinets are the same size and structurally identical to the tested termination cabinet (Reference 4). The only difference between the Limerick cabinets and the tested termination cabinet is the quantity and location of termination modules. This will not affect the structural capability of the cabinets.

The TRS envelops the RRS as shown in the Appendix, Fugure 4.2.These cabinets are located in the Control Room, elevation 269'.The SQRT forms for the Class IE Termination Cabinets (P700 series) are contained in Section 3.1.4.6 Floor Mounting 1.4.6.1 Auxiliary Equipment Room, 289' Elevation Panels located in the Auxiliary Equipment Room are mounted on PGCC floor sections.

As shown in Ref. 5, sections similar to those at Limerick were tested to determine if there were any amplifications of accelerations to the panels. Panel accelerometer readings show that the floor sections actually reduce the transmissibility on the tested panels by as much as 10 percent. This is due to structural damping. The results presented in this report conservatively assume that the floor sections are rigid, and no credit is taken for the reduced transmissibility.

1.4.6.2 Control Room, 269' Elevation Panels located in the control room (and C61-PO01) are bolted to a 4" base which is welded to the floor. This base was on the tested Limerick H12-P601, P603, and P661 panels. Examination of test data in panels without this base shows no appreciable difference in transmissibilities.

The base is therefore assumed rigid.1-8 Limerick Generating Station Unit 1 C-56 MPR-3796, Revision 1 rnrrP~nnndinrA.

Nn R5R-1 -171 Equipment ID: 10C603 Limerick Generating Station Unit 1 MPR-3796, Revision 1 r.nrrP.nnnrlPnr-.

Nn* R0-12-171 C-57 Equipment ID: 10C603 Limerick Generating Station Unit 1 MPR-3796, Revision 1 rnrrAnnndPnrn Nn ' R.--1 71 C-58 Sheet 1 of 2 Status:( N U Seismic Walkdown Checklist (SWC)Equipment ID No. 10C609 Equip. Class 1 2 (18) Control Panels & Cabinets Equipment Description RPS Channel "A" Vertical Board Location:

Bldg. Control Floor El. 289 Room, Area Room 542 Structure Manufacturer, Model, Etc. (optional but recommended)

Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings.

Additional space is provided at the end of this checklist for documenting other comments.Anchoraze 1. Is the anchorage configuration verification required (i.e., is the item one YE] of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware?

YXNEI UE] N/A[]3. Is tfe ~ic'?oage free of corrosion that is more than mild surface Y~NE] UE]1 oxidation?

N/AE]IX 4. Is the anchorage free of visible cracks in the concrete near the anchors? Y NE] UE N/AEO 5. Is the anchorage configuration consistent with plant documentation?(Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?

0 UO N/Ag -'X NEI UO 12 Enter the equipment class name from Appendix B: Classes of Equipment.

<C-3 >Limerick Generating Station Unit 1 MPR-3796, Revision 1 rnrrn'nnndPnre, Nn -RS-15-171 C-59 Sheet 2 of 2 Equipment ID No. 10C609 Equip. Class" (18) Control Panels & Cabinets Equipment Description RPS Channel "A" Vertical Board Interaction Effects 7. Are soft targets free from impacby nearby equipment or structures?

No Vvt4(4ý( i,a ft niarr~f YNO UO N/An 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y,'NO UD N/AD and masonry block walls not likely collapse onto the equipment?

C G 15 ~ ~ / (tV(ýSC4V 4e 'ie L-6'eis-~o C IGA t 9. Do attached lines have adequate flexibility to avoid damage?10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?YANO U0 N/AUý<ND UO Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YC( ND UD adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary)

Evaluated by: Date: g/J,/IZ...........

=.-I- (A' --A/9 ,baeZ< C-4 >Limerick Generating Station Unit 1 MPR-3796, Revision 1 rnrrPmnnndPnrA.Nn.

R.R-19-171 C-60 Equipment ID: 10C609 Limerick Generating Station Unit 1 MPR-3796, Revision 1 rlnrrPqnnndiPnr.P Nn -RR-19-171 C-61 Equipment ID: 10C609 Limerick Generating Station Unit 1 C-62 MPR-3796, Revision 1 rTnrrmnnnHdnr.P Nn -RR-1I-171 Sheet 1 of 2 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.I0 C -Equip. Class" 2 (18) Control Panels & Cabinets Equipment Description ADS Control Room Panel!Location:

Bldg. Control Floor El. 7_I... Room, Area Z 5 3 (uCR.)Structure Manufacturer, Model, Etc. (optional but recommended)

Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings.

Additional space is provided at the end of this checklist for documenting other comments..I Anchoraae 1. Is the anchorage configuration verification required (i.e., is the item one of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware?3. Is the anchorage free of corrosion that is more than mild surface oxidation?
4. Is the anchorage free of visible cracks in the concrete near the anchors?V NEI U[-O N/A[]Ye NE UEI N/AE-NEI UO- N/AO 5. Is the anchorage configuration consistent with plant documentation?

YE] NO UEr (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

C" 44-4 atk fe to 'ad 4fjuP AIF,( ir~4 oA1 fv ji4eO-t, ~41 6ft(b4 c,in,4 f £'t Ale to -k ,,, raI-ng VI&,C Whv efbf6 4;"jht 6. Based on the above anchorage evaluations, is the anchorage free of XgNEI UrD e 'potentially adverse seismic conditions?

%. ,.t.."-4 '2 PA, Wnd Enteri thqipment class nam e frmA4i tooC i t 12Ene the equipment class name from Appendix B: Classes of Equipment.

Limerick Generating Station Unit 1 MPR-3796, Revision 1 Nn ' RR-19-171 C-63 Sheet 2 of 2 Equipment ID No. /10 6 1 -Equip. Class'2 (18) Control Panels & Cabinets Equipment Description ADS Control Room Panel Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Me Ib ý4 Arjf -' (e-l YE9/ND U0J N/AO 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YM(ND UD N/AD and masonry walls not likely to collapse onto the equipment 9%- evi1l"o Of- c.,ed;.j f4.i4;y e~wf% ka( o' 406 (, 4 -lef,1's (VI. -to V,/ I#C i 0 0 9. Do attached lines have adequate flexibility to avoid damage?10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Y0ND UD N/AD YM/ND UD Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could Y21/ND UD adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary)

/ I o 0(Evaluated b Y:>L/v7 Date: Jý16/ 2-t [1 6/< C-4 >Limerick Generating Station Unit 1 MPR-3796, Revision 1R.R-19-171 C-64

1.4.5 Termination

Cabinets The frames and enclosures of Limerick termination cabinets are the same size and structurally identical to the tested termination cabinet (Reference 4). The only difference between the Limerick cabinets and the tested termination cabinet is the quantity and location of termination modules. This will not affect the structural capability of the cabinets.

The TRS envelops the RRS as shown in the Appendix, Fugure 4.2.These cabinets are located in the Control Room, elevation 269'.The SQRT forms for the Class 1E Termination Cabinets (P700 series) are contained in Section 3.1.4.6 Floor Mountina 1.4.6.1 Auxiliary Equipment Room, 289' Elevation Panels located in the Auxiliary Equipment Room are mounted on PGCC floor sections.

As shown in Ref. 5, sections similar to those at Limerick were tested to determine if there were any amplifications of accelerations to the panels. Panel accelerometer readings show that the floor sections actually reduce the transmissibility on the tested panels by as much as 10 percent. This is due to structural damping. The results presented in this report conservatively assume that the floor sections are rigid, and no credit is taken for the reduced transmissibility.

1.4.6.2 Control Room, 269' Elevation Panels located in the control room (and C61-POO1) are bolted to a 4" base which is welded to the floor. This base was on the tested Limerick H12-P601, P603, and P661 panels. Examination of test data in panels without this base shows no appreciable difference in transmissibilities.

The base is therefore assumed rigid.1-8 Limerick Generating Station Unit 1 C-65 MPR-3796, Revision 1 CnrrPnnnd, nr.p Nn -RR- 2-171 Equipment ID: 10C626 I I I Limerick Generating Station Unit 1 MPR-3796, Revision 1 CnrrP.nnndPnr-a Nn -RR-19-171 C-66 Equipment ID: 10C626 Limerick Generating Station Unit 1 MPR-3796, Revision 1 rnrrPnnnrl~nrP.

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