ML12342A121

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MPR-3801, 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 3 of 13
ML12342A121
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-3801, Rev 1
Download: ML12342A121 (38)
v • d • e


Text

{{#Wiki_filter:Sheet 1 of 2 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No. 20C201 Equip. Class'2 (18) Control Panels & Cabinets Equipment Description Remote Shutdown Vertical Board Location: Bldg. Centre/ Floor El. 289 Room, Area Room 540 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 YEI 4 of the 50% of SWEL items requiring such verification)?

2. Is the ancI orage free b~ei , Poken, missing or loose hardware?

NEI 4 C). V1 t4 UC- N/ADl 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?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?

WI-N] U[] N/AE]Y$NED UI] N/AC YO] NEi UE] N/AA)o NE] U[J 2 Enter the equipment class name from Appendix B: Classes of Equipment. < C-3 Limerick Generating Station Unit 2 MPR-3801, Revision 1 r.nrrPznrnriA~nr.P Nn -RA-1-71 C-71 Sheet 2 of 2 Equipment ID No. 20C201 Equip. Class" 2 (18) Control Panels & Cabinets Equipment Description Remote Shutdown Vertical Board Interaction Effects 7. Are soft targets free from impact by nearby eqip'ment4 r structures? N P "eredo b %/ k 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, and masonry blockwalls not likely to collapse onto the equipmnent] ., 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?YA-ND UD N/AD Y) ND UD N/AD YvN-t be q Uf 6 i4 YAO4 UD N/AD YXOUD Other Adverse Conditions

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

Comments (Additional pages may be added as necessary) S/892,< C-4 >Limerick Generating Station Unit 2 MPR-3801, Revision 1 (.nrrP..nnnr1PnrA. Nn -RR-19-171 C-72 Equipment ID: 20C201 F i Limerick Generating Station Unit 2 MPR-3801, Revision 1 rlnrrp..nnndpnrp Nn " RR-19-171 C-73 Equipment ID: 20C201 Limerick Generating Station Unit 2 MPR-3801, Revision 1 Nn -R.-19-171 C-74 Sheet 1 of 2 Status: (9) N U Seismic Walkdown Checklist (SWC)Equipment ID No. TB40" Equip. Class" 2 (18) Control Panels & Cabinets EauiWment Descrintionl Recire Control Panel Location: Bldg. Control Floor El. 2,61 Room, Area 5 33 C M c ()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 ofjudgmnents 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 YE] Nk of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware?C., L~A~L&a qt0 2 % Lw)f-C14 CAJýeA C"VL.A IO*_CkýVQ 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yg NE] UD N/AE]Y14 NO- U[[ N/AO 4. Is the anchorage free of visible cracks in the concrete near the anchors? YN NEI UOi N/AE]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.) cs-we *6)6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions? YE] NEI UE] N/A'YNO UE CJoskfrt¶ -e&- &zZ irU nw. -f-- pdt4t ay' fS4--"--t* C4.1(t A--k NI.dW I& )Q 2 Enter the equipment class name from Appendix B: Classes of Equipment. <C-3 >" Limerick Generating Station Unit 2 C-75 MPR-3801, Revision 1`nrrFnnnH~nr Nn" P-19-171 Sheet 2 of 2 Equipment ID No. TBD-04 Equip. Class 1 2 (18) Control Panels & Cabinets Eiuinment Descrintion. Recit Contrnl Panel Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures? Y .o:D UD N/A[]8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YP(ND UEI N/At and masonry block walls not likely to collapse onto the equipment? 6CY4 Ls S V-W%;'--tk&V A ,-.,4 ,sAWCis n AA., Ssb"~ a. 'ito a%'R- 4 i', X 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?Y NEI OJ" UI" N/AD]NEI Ut]Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YO NE! Ut]adversely affect the safety fimctions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Date: '/?l-Limerick Generating Station Unit 2 MPR-3801, Revision 1 rnrrmnnndPnr.P Nn

  • R5-19-171 C-76

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 reference 5, sections similar to those at Limerick were tested to determine if there were any amplifications of accelerations to the panels. In-panel responses show that the floor sections actually attenuate the transmissibilty 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.1.4.7 Seismic Tests on Limerick H12-P603 Console Console H12-P603 was subjected to front-back/vertical dual axis OBE and SSE tests and resonance search tests in all three axes. It was not subjected to dual axis side-side tests due to its width. Examination of test data for similar, but taller consoles shows no degradation of performance during any of the dual axis tests. Data obtained during side-to-side resonance search tests for this panel show amplifications on the order of 2.0. Therefore, panel mounted equipment is not expected to respond severely to dual axis excitation in this direction. Furthermore, the capabilities of devices on this panel are 8.5 g's or greater. For the reasons of similar console tests and sufficient margins, seismic qualification in the side-side direction is valid.1.4.8 Exceptions to TRS enveloping RRS Examination of the TRS and RRS in Figure 4.1 shows that the TRS does not envelope the RRS in the ranges 2.8 to 3.3 Hz and 16 to 19 Hz. Qualification is still valid according to the following rationale taken from reference 7: MThe TRS for each event is generally synthesized at 1/6 octave intervals or smaller, and the final test result is compared with the RRS. Currently, there are no well defined criteria for such a comparison other than the simple recommendation that the TRS envelope the RRS. Since this may not be practical for all frequencies tested, it is recommended that no more than five points of the TRS should fall below, and these no more than 10% below, the RRS in the frequency range between one-half of the equipment fundamental frequency and the ZPA high-frequency asypmtote." 1-6 Limerick Generating Station Unit 2 0-77 MPR-3801, Revision I rnrrPqnnn1PlnrP Nn* RR-19-171 Equipment ID: 20C602 I Limerick Generating Station Unit 2 MPR-3801, Revision 1 rnrrP.nnnde1nr,. Nn -R,-17-171 C-78 Equipment ID: 20C602 Limerick Generating Station Unit 2 MPR-3801, Revision 1 rnrrmnnndpnr.-p N Pin 171 C-79 Sheet I of 2 Status:M N U Seismic Walkdown Checklist (SWC)Zo 6o M 0 3 Equipment ID No. T 2 Equip Class" (18) Control Panels & Cabinets Fii.minment lDe..qrrntinn Rp~n,'tnr./fmw*-nntrn1 Pnwwl Location: Bldg. Control Floor El. -Z6- 6 Room, Area 5733 (r. A.)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.Anchorage 1. Is the anchorage configuration verification required (i.e., is the item one YE'I NP, 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?

YM NEI UO1 N/A[]4. Is the anchorage free of visible cracks in the concrete near the anchors? YP NEIl UL- N/AEl 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 notentiallv adverse seismic conditions?

YEI NEI U" N/A9K Y4 NEI Uil 62 o ) L ipme-n class -e ppend B: classes of Eq kp m Ente the equipment class name from Appendix B: Classes of Equipment. Limerick Generating Station Unit 2 MPR-3801, Revision 1 r nrrPnnndinr.PNn* PR-19-171 C-80 Sheet 2 of 2?3C 0 Equipment ID No. T Equip. Class 1 2 (18) Control Panels & Cabinets Equipment Description -A *Reactor-A Control Panel Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures? Y TV-Sitki~e -b c. jof+ tw:ptr3e. S-tý-*8 -&% 6tAaexmet. fNE UD N/AO 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, UDI N/ADI and masonry block walls not likely to collapse onto the equipment? .C A. ..... ..... -1 .. n4 dfteC. ... .... 4" r? St 9. Do attached lines have adequate flexibility to avoid damage?YANE] UD N/AD]10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?YA NEl UDE Other Adverse Conditions

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

Comments (Additional pages may be added as necessary) Evaluated Date:<C-4>Limerick Generating Station Unit 2 MPR-3801, Revision 1 f.nrrP~nnnd(nrP Nn -RR-19-171 C-81 GI 1 E- 2c, Qswc. ?,o o3)14.46 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 reference 5, sections similar to those at Limerick were tested to determine if there were any amplifications of accelerations to the panels. In-panel responses show that the floor sections actually attenuate the transmissibilty 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.1.4.7 Seismic Tests on Limerick H12-P603 Console Console H12-P603 was subjected to front-back/vertical dual axis OBE and SSE tests and resonance search tests in all three axes. It was not subjected to dual 9axis side-side tests due to its width. Examination of test data for similar, but taller consoles shows no degradation of performance during any of the dual axis tests. Data obtained during side-to-side resonance search tests for this panel show amplifications on the order of 2.0. Therefore, panel mounted equipment is not expected to respond severely to dual axis excitation in this direction. Furthermore, the capabilities of devices on this panel are 8.5 g's or greater. For the reasons of similar console tests and sufficient margins, seismic qualification in the side-side direction is valid.1.4.8 Exceptions to TRS enveloping RRS Examination of the TRS and RRS in Figure 4.1 shows that the TRS does not envelope the RRS in the ranges 2.8 to 3.3 Hz and 16 to 19 Hz. Qualification is still valid according to the following rationale taken from reference 7: Mhe TRS for each event is generally synthesized at 1/6 octave intervals or smaller, and the final test result is compared with the RRS. Currently, there are no well defined criteria for such a comparison other than the simple recommendation that the TRS envelope the RRS. Since this may not be practical for all frequencies tested, it is recommended that no more than five points of the TRS should fall below, and these no more than 10% below, the RRS in the frequency range between one-half of the equipment fundamental frequency and the ZPA high-frequency asypmtote." 1-6 Limerick Generating Station Unit 2 C-82 MPR-3801, Revision 1 Nn ' RR-19-171 Equipment ID: 20C603 Limerick Generating Station Unit 2 MPR-3801, Revision 1 CnrrP~nnndPlnrP Nn

  • RR-19-171 C-83 Equipment ID: 20C603 Limerick Generating Station Unit 2 MPR-3801, Revision 1 nrr~mnnnriPnr.P Kn -RR-19-171 C-84 Sheet 1 of 2 Status: (V N U Seismic Walkdown Checklist (SWC)Equipment ID No. 20C609 Equip. Class" (1 8) 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.Anchorage 1. Is the anchorage configuration verification required (i.e., is the item one YQ-!of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware?vjUtJI vu (iLe -to bz- 11 x 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?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?

YK NEI UD N/AD NEI UrD N/ADU- N/A[]YE[ NEI U[] N/Ag YPNEI UD1 12 Enter the equipment class name from Appendix B: Classes of Equipment. <C-3 >Limerick Generating Station Unit 2 MPR-3801, Revision 1 rnrri-mnnndrPnr.P Nn

  • R9-19-171 C-85 Sheet 2 of 2 Equipment ID No. 20C609 Equip. Class" (18) Control Panels & Cabinets Equipment Description RPS Channel "A" Vertical Board 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?
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?rN ulEU N/AD Y 1-N UF N/ADl-to &-a.11 Y~NO UD N/AE]*NIU11 Other Adverse Conditions
11. Have you looked for and found no other seismic conditions that could 'A-O1 UI-J adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) A -6P WI-< C-4 >Limerick Generating Station Unit 2 MPR-3801, Revision 1 flnrrPqnnndPnr.P. Nn

  • RR-19-171 C-86 Equipment ID: 20C609 Limerick Generating Station Unit 2 MPR-3801, Revision 1 r.nrrcnnnnr'Pn Nn
  • R-19-171 C-87 Sheet 1 of 2 Status: @ N U Seismic Walkdown Checklist (SWC)Equipment ID No. 'BD.- -Equip. Class 1 2 (18) Control Panels & Cabinets Equipment Description ADS Control Room Panel4 Location:

Bldg. Control Floor El. 2.601 Room, Area C33 ( C( ) 4-Structure pe 4" 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.Anchorase 1. Is the anchorage configuration verification required (i.e., is the item one YE) NK of the 50% of SWEL items requiring such verification)?

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

YK NEI U-1 N/AD 3. Is the anchorage free of corrosion that is more than mild surface YK NE-I U[] N/AO oxidation?

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

YE) NEI Ur N/Ag (Note: This question only applies if the item is one of the 50% for which an anphorage configuration verification is required.)

6. Based on the above anchorage evaluations, is the anchorage free of YOb N[] UD potentially adverse seismic conditions?

acrer~1..Seem.Enter the equipment class name from Appendix B: Classes of Equipment. < C-3 >Limerick Generating Station Unit 2 MPR-3801, Revision 1 C.nrrp-nnndPnr.P Nn C-88 Sheet 2 of 2 2.0 c-6 t Equipment ID No. ____T, "_ -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? Y['N"I U[" N/A[]A .5 APs 4 o4itA4- 5 4- 4f-C zro-t i , 0,53c.SS~$tg.v* 0(£?1 P 7 CeU.1/28. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y N-I U[-1 N/A[-!and masonry block walls not likely to collapse onto the equipment?

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?NO U- N/A["I&NEI UU Other Adverse Conditions
11. Have you looked for and found no other seismic conditions that could YIT N[: UDI adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Date: Limerick Generating Station Unit 2 MPR-3801, Revision 1 rlnrrm.nnndpnrP. Nn PR-I 9-171 C-89

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 reference 5, sections similar to those at Limerick were tested to determine if there were any amplifications of accelerations to the panels. In-panel responses show that the floor sections actually attenuate the transmissibilty 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. 1A.6.2 Control Room, 269' Elevation. Panels located in the control room (and C6 I-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.1.4.7 Seismic Tests on Limerick H12-P603 Console Console H12-P603 was subjected to front-back/vertical dual axis OBE and SSE tests and resonance search tests in all three axes. It was not subjected to dual axis side-side tests due to its width. Examination of test data for similar, but taller consoles shows no degradation of performance during any of the dual axis tests. Data obtained during side-to-side resonance search tests for this panel show amplifications on the order of 2.0. Therefore, panel mounted equipment is not expected to respond severely to dual axis excitation in this direction. Furthermore, the capabilities of devices on this panel are 8.5 g's or greater. For the reasons of similar console tests and sufficient margins, seismic qualification in the side-side direction is valid.1.4.8 Exceptions to TRS enveloping RRS Examination of the TRS and RRS in Figure 4.1 shows that the TRS does not envelope the RRS in the ranges 2.8 to 3.3 Hz and 16 to 19 Hz. Qualification is still valid according to the following rationale taken from reference 7: 'Te TRS for each event is generally synthesized at 1/6 octave intervals or smaller, and the final test result is compared with the RRS. Currently, there are no well defined criteria for such a comparison other than the simple recommendation that the TRS envelope the RRS. Since this may not be practical for all frequencies tested, it is recommended that no more than five points of the TRS should fall below, and these no more than 10% below, the RRS in the frequency range between one-half of the equipment fundamental frequency and the ZPA high-frequency asypmtote." 1-6 Limerick Generating Station Unit 2 C-90 MPR-3801, Revision 1 CnrrP~nnndHnr.P Nn

  • R-1A9-171 Equipment ID: 20C626 Limerick Generating Station Unit 2 MPR-3801, Revision 1 rnrrrnnndnr.P Nn
  • RR- 71 C-91 Equipment ID: 20C626 Limerick Generating Station Unit 2 MPR-3801, Revision 1 rnrrP.qnnnPtnrP Nn* R.0-19-171 C-92 Sheet 1 of 2 Status:O N U Seismic Walkdown Checklist (SWC)Equipment ID No. 20C647 Equip. Class 2 (18) Control Panels & Cabinets Equipment Description Panel HPCI Vertical Board Location:

Bldg. Control Floor El. -.Room, Area Room 533 6g, )o h IAe, M Structure wo P .A 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 YEI 1J of the 50% of SWEL items requiring such verification)?

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

N' U-' N/Al C>Vkly~~~~~~ ~ ~ ~ ~ 6ý,j".f .i. ý ZýS-~ .AA%1-ot.3. Is the anchorage free of corrosion that is more than mild surface oxidation? YNINE] UO- N/AE]4. Is the anchorage free of visible cracks in the concrete near the anchors? YAN[-] UI" N/AE]5. Is the anchorage configuration consistent with plant documentation? YEI NE]i UE](Note: This question only applies if the item is one of the 50% for whicehan anchorage configuration verification is required.) cAJ&iLS- w /nk 4im t~, ce%( r b,' (2-4AA~~&n*i C.ýr~~b R& nt 6. Based on the above anchorage evaluations, is the anchorage free of Yg'NN-] Ul-potentially adverse seismic conditions? N/A;9 V5^.ýtWoWld-12 Enter the equipment class name from Appendix B: Classes of Equipment. -<C-3 >Limerick Generating Station Unit 2 MPR-3801, Revision 1 r.nrrPqnnn1Pn. .Nn" RS-19-171 C-93 Sheet 2 of 2 Equipment ID No. 20C647 Equip. Class'2 (18) Control Panels & Cabinets Equipment Description Panel HPCI Vertical Board Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, maso rY block walls not likely to collapse onto e upent?t r- T__ Co ¢rs4 o-L, V,.,-.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?aND UEJ N/AEIfr.

YAOD Ur- N/AD f~ 0-v M SS 0 oh ., -.I-)4NEl UQ N/AD Y. NEI U13 Other Adverse Conditions

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

Comments (Additional pages may be added as necessary) Evaluated by: Limerick Generating Station Unit 2 MPR-3801, Revision 1 rnrrmnnndHnr.e Nn -RR-19-171 Date: /.y/.2 f< C-4 >C-94

1.4.6 Floor

Mounting 1A.6.1 Auxiliary Equipment Room, 289' Elevation Panels located in the Auxiliary Equipment Room are mounted on PGCC floor sections. As shown in reference 5, sections similar to those at Limerick were tested to determine if there were any amplifications of accelerations to the panels. In-panel responses show that the floor sections actually attenuate the transmissibilty 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.1.4.7 Seismic Tests on Limerick H12-P603 Console Console H12-P603 was subjected to front-back/vertical dual axis OBE and SSE tests and resonance search tests in all three axes. It was not subjected to dual axis side-side tests due to its width. Examination of test data for similar, but taller consoles shows no degradation of performance during any of the dual axis tests. Data obtained during side-to-side resonance search tests for this panel show amplifications on the order of 2.0. Therefore, panel mounted equipment is not expected to respond severely to dual axis excitation in this direction. Furthermore, the capabilities of devices on this panel are 8.5 g's or greater. For the reasons of similar console tests and sufficient margins, seismic qualification in the side-side direction is valid.1.4.8 Exceptions to TRS enveloping RRS Examination of the TRS and RRS in Figure 4.1 shows that the TRS does not envelope the RRS in the ranges 2.8 to 3.3 Hz and 16 to 19 Hz. Qualification is still valid according to the following rationale taken from reference 7: The TRS for each event is generally synthesized at 1/6 octave intervals or smaller, and the final test result is compared with the RRS. Currently, there are no well defined criteria for such a comparison other than the simple recommendation that the TRS envelope the RRS. Since this may not be practical for all frequencies tested, it is recommended that no more than five points of the TRS should fall below, and these no more than 10% below, the RRS in the frequency range between one-half of the equipment fundamental frequency and the ZPA high-frequency asypmtote." 1-6 Limerick Generating Station Unit 2 C-95 MPR-3801, Revision 1 rnrrp.nnnr1Pnr.P Nn" RR-12-171 Equipment ID: 20C647 Limerick Generating Station Unit 2 MPR-3801, Revision 1 rlnrrp.nnndrP.nr Nn RR-1-171 C-96 Equipment ID: 20C647 Limerick Generating Station Unit 2 MPR-3801, Revision 1 rnrrPnnnrPnrý. Nn -Rq-19-171 C-97 Sheet 1 of 2 Status: ( N U Seismic Walkdown Checklist (SWC)Equipment ID No. 20P203 &-20922-2 -Equip. Class1 2 (03) Horizontal Pumps Equipment Description RCIC Pump &J-&Wbe.Location: Bldg. Reactor Floor El. 177 Room, Area Room 179 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.Anchorane 1. Is the anchorage configuration verification required (i.e., is the item one YA NI]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?NE U[] N/AU Y)K NEI UD N/AU YX NEI UO N/AD 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 anch2rage configuration verification is required.)
6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?

YX NO U-0 N/AU) R&V. LýY(NO UI-I 12 Enter the equipment class name from Appendix B: Classes of Equipment. <C-3 >Limerick Generating Station Unit 2 MPR-3801, Revision 1 rnrrP.nnndpnr._ Nn -RR-19-171 C-98 Sheet 2 of 2 Equipment ID No. 20P203&2&2+-2 -Equip. Class" (03) Horizontal Pumps Equipment Description RCIC Pump &-T~rbnhn-Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?"No 5A 1a T ek 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, and masonry block walls not likely to collapse onto the equipment?-Nqo ovq'kwod 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?Y% N"] UD N/AD YtR NEI UD N/AD YN NEI UE] N/AE]Y)X NO] UE Other Adverse Conditions

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

Comments (Additional pages may be added as necessary) A//A Evaluated by: 00224Cv~k %Wrajz~v Vk Date: /Limerick Generating Station Unit 2 MPR-3801, Revision 1 rnrrmnnndrPnr, Nn- RR-19-171 C-99 Equipment ID: 20P203 Limerick Generating Station Unit 2 MPR-3801, Revision 1 f.nrrp..nndpnnr.A Nn -R,-17-171 C-100 Equipment ID: 20P203 Limerick Generating Station Unit 2 MPR-3801, Revision 1 ,nrrrnnrnPnnrP Nn RR-19-171 C-101 Equipment ID: 20P203 Limerick Generating Station Unit 2 MPR-3801, Revision 1 f.nrrPnnndrnrn Nn -RR-1-171 C-102 Sheet 1 of 2 Status:(P N U Seismic Walkdown Checklist (SWC)Equipment ID No. 20P204* Equip. Class 1 2 (03) Horizontal Pumps£AL'J.- .1,J..;... LL ALL("

  • r..A A *L P , m..,L, Location:

Bldg. Reactor Floor El. 177 Room, Area Room 180 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.Anchoraze 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?Yý(NO YtX NO UD N/AO Y;K NEI UQ N/ADl YV N[] UD N/ADl 5. Is the anchorage configuration consistent with plant documentation?

Y)I NEI U[3 N/A[D (Note: This question only applies if the item is one of the 50% for which an an horage configuration verification i required.)

6. Based on the above anchorage evaluations, is the anchorage free of YP( NI] U-1 potentially adverse seismic conditions?

12 Enter the equipment class name from Appendix B: Classes of Equipment. Limerick Generating Station Unit 2 MPR-3801, Revision 1 rnrrP.nnnrl~nr.. Nn

  • R.5-17-171 C-103 Sheet 2 of 2 Equipment ID No. 20P204 &0&244 Equip. Class'2 (03) Horizontal Pumps pC16 Equipment Description HPCI Baoit Pump Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?.Af 5o 4 YX NEI UL N/AD 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YX N] U" N/AD and masonry block walls not likely to collapse onto the equipment?
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?UED N/AD Yg NE UD Other Adverse Conditions
11. Have you looked for and found no other seismic conditions that could 'Y NEI Ui adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: nIWW%ýr v Date:< C-4 A>Limerick Generating Station Unit 2 MPR-3801, Revision 1 rnrr.nnndfPnrP Nn t R,.-19-171 C-104 Equipment ID: 20P204 I Limerick Generating Station Unit 2 MPR-3801, Revision 1 rnrrP.innndenrA. Nn *R 171 C-105 Equipment ID: 20P204 Limerick Generating Station Unit 2 C-1 06 MPR-3801, Revision 1 (lnrrP.nnndPnrP. Nn -RR-19-171 Equipment ID: 20P204 Limerick Generating Station Unit 2 C-107 MPR-3801, Revision 1 CnrrPAnnnriPnr.P Nn

  • PR-12-171 Equipment ID: 20P204 II Limerick Generating Station Unit 2 MPR-3801, Revision 1 Cnrrpqnnnd==nr'.

Nn* RR-19-171 C-108}}

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