RS-12-161, Byron Generation Station, Unit 1, 12Q0108.20-R-002 Rev. 1, Seismic Walkdown Checklist (Swc). Part 2 of 2

Byron Generation Station, Unit 1, 12Q0108.20-R-002 Rev. 1, Seismic Walkdown Checklist (Swc). Part 2 of 2

ML12341A162
Person / Time
Site:	Byron
Issue date:	11/07/2012
From:	Stevenson & Associates
To:	Office of Nuclear Reactor Regulation, Exelon Generation Co
References
RS-12-161 12Q0108.20-R-002, Rev 1
Download: ML12341A162 (207)

Text

12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PA33J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB CONT SYSTEM ESF 21 0-3373B AB2 Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 451.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50%of SWEL items requiring such verification)?

No 2. Is the anchorage free of bent, broken, missing or loose hardware?Yes 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors?Yes 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.)

Not Applicable

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

See discussion in Section 5 of report to address cove molding at anchorage detail. Anchorage is judged to be acceptable..

Yes C-260 12QO108.20-R-002 Rev. I Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PA33J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB CONT SYSTEM ESF 21 0-3373B AB2 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Yes Adjacent cabinets are bolted together to eliminate spatial interaction during a seismic event.8. Are overhead equipment, distribution systems, ceiling tiles and lighting, and masonry block walls not likely to collapse onto the equipment?

Partially open S-hooks on lights. IR 1397694 was written to inspect and close S-hooks. S-hooks are not likely to become disengaged in a seismic event since they are not fully open and are therefore acceptable.

9. Do attached lines have adequate flexibility to avoid damage?Yes Yes 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-261

-- ----... ... ... -- .. .. ....12QO108.20-R-002 Rev. I Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PA33J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB CONT SYSTEM ESF 21 0-3373B AB2 Photos C-262 12QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PA34J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB CONT SYSTEM ESF 22 0-3373B AB2 Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 451.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50%of SWEL items requiring such verification)?

No 2. Is the anchorage free of bent, broken, missing or loose hardware?Yes 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors?Yes 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.)

Not Applicable

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

See discussion in Section 5 of report to address cove molding at anchorage detail. Anchorage is judged to be acceptable.

Yes C-263 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PA34J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB CONT SYSTEM ESF 22 0-3373B AB2 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Adjacent cabinets are bolted together to eliminate spatial interaction during a seismic event.8. Are overhead equipment, distribution systems, ceiling tiles and lighting, and masonry block walls not likely to collapse onto the equipment?

Partially open S-hooks on lights. IR 1397694 was written to inspect and close S-hooks. S-hooks are not likely to become disengaged in a seismic event since they are not fully open and are therefore acceptable.

9. Do attached lines have adequate flexibility to avoid damage?Yes Yes Yes 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-264

-, -.... .. ...., --..... .. ....12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PA34J Equipment Class: (20) Inst Equipment

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Description:==

CAB CO rumentation and Control Panels and Cabinets NT SYSTEM ESF 22 0-3373B AB2 Photos Photos C-265 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: V N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PA51J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB HJTC RX VESSEL LEVEL CH A 0-3373B AB2 Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 451.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50%of SWEL items requiring such verification)?

No 2. Is the anchorage free of bent, broken, missing or loose hardware?Yes 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors?Yes 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?

One side of exterior weld is visible due to loose cove molding. Interior weld also seen. (Cabinet opened) See discussion in Section 5 of report to address cove molding at anchorage detail. Anchorage is judged to be acceptable.

Drawing 6E-0-3391AJ Revision AF.Not Applicable Yes C-266 1200108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PA51J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB HJTC RX VESSEL LEVEL CH A 0-3373B AB2 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Adjacent cabinets are bolted together to eliminate spatial interaction during a seismic event.8. Are overhead equipment, distribution systems, ceiling tiles and lighting, and masonry block wallsnot likely to collapse onto the equipment?

Partially open S-hooks on lights. IR 1397694 was written to inspect and close S-hooks. S-hooks are not likely to become disengaged in a seismic event since they are not fully open and are therefore acceptable.

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?Yes Yes Yes Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-267 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PA51J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB HJTC RX VESSEL LEVEL CH A 0-3373B AB2 Photos C-268 12Q0108.20-R-002 Rev. I Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment

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Description:==

2PA51J (20) Instrumentation and Control Panels and Cabinets CAB HJTC RX VESSEL LEVEL CH A 0-3373B AB2 C-269 12Q-108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PA52J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

.

CAB HJTC RX VESSEL LEVEL CH B 0-3373B AB2 Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 451.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50% No of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware?Yes 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors?Yes 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.)

Not Applicable

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

Weld verified on one side only. See discussion in Section 5 of report to address cove molding at anchorage detail. Anchorage is judged to be acceptable.

Drawing 6E-O-3391AJ Revision AF Yes C-270 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PA52J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB HJTC RX VESSEL LEVEL CH B 0-3373B AB2 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Adjacent cabinets are bolted together to eliminate spatial interaction during a seismic event.8. Are overhead equipment, distribution systems, ceiling tiles and lighting, and masonry block walls not likely to collapse onto the equipment?

Partially open S-hooks on lights. IR 1397694 was written to inspect and close S-hooks. S-hooks are not likely to become disengaged in a seismic event since they are not fully open and are therefore acceptable.

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?Yes Yes Yes Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 62 " Philip Gazda 10/5/2012 C-271 12Q-108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment

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Description:==

2PA52J (20) Instrumentation and Control Panels and Cabinets CAB HJTC RX VESSEL LEVEL CH B 0-3373B AB2 Photos L!........ ...11/ztiAozi tyron -i & z o C-272 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PI-0633 Equipment Class: (18) Instruments on Racks Equipment

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Description:==

SFP PMP SUCTION PRESSURE INDICATOR Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

FH, 401.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50%of SWEL items requiring such verification)?

No 2. Is the anchorage free of bent, broken, missing or loose hardware?Not Applicable

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.)

Not Applicable Not Applicable Not Applicable

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

Instrument is securely attached to rack that is well-anchored at concrete column.Yes C-273 12Q-108.20-R-002 Rev. I Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PI-0633 Equipment Class: (18) Instruments on Racks Equipment

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Description:==

SFP PMP SUCTION PRESSURE INDICATOR 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?

Masonry wall is seismic and would not collapse on equipment-crack at column not a structural/seismic issue since at location of low stress in the wall.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?Yes Yes Yes Yes *Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/9/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-274 12QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: Y-1 N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PI-0633 Equipment Class: (18) Instruments on Racks Equipment

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Description:==

SFP PMP SUCTION PRESSURE INDICATOR Photos 2PI-0633 Byron 1 & 2 8-9-12 055 C-275 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PL07J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

2A DG 2DG01KA CONTROL PANEL Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 401.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50% Yes of SWEL items requiring such verification)?

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

Yes 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors? Yes 5. Is the anchorage configuration consistent with plant documentation? (Note: Yes This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

Drawing 6E-O-3391AH Revision S Cabinet door opened to visually inspect weld which is located at shim plates.Shim locations measured on exterior to determine weld spacing -meets or exceeds drawing requirement.

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

C-276 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PL07J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

2A DG 2DG01KA 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?

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?Yes Yes Yes Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/7/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-277 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PL07J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

2A DG 2DG01KA CONTROL PANEL Photos C-278 I 2Q01 08.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PL07J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

2A DG 2DG01 KA CONTROL PANEL C-279 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: E N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PL08J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

2B DG 2DG01KB CONTROL PANEL Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 401.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50% Yes of SWEL items requiring such verification)?

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

Yes 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors? Yes 5. Is the anchorage configuration consistent with plant documentation? (Note: Yes This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

6E-O-3391AH Revision S Opened cabinet to visually inspect weld which are located at shim plates but did not enter. Measured shims on exterior for weld spacing verification.

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

C-280 12QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PL08J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

2B DG 2DG01KB CONTROL PANEL Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

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

Yes 9. Do attached lines have adequate flexibility to avoid damage?Yes 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/7/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-281 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment

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Description:==

2PL08J (20) Instrumentation and Control Panels and Cabinets 2B DG 2DG01KB CONTROL PANEL Photos Photos C-282 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PL08J Equipment Class: (20) Inst FnijinmP~nt 2B D(2 rumentation and Control Panels and Cabinets trumentation and Control Panels and Cabinets 2DG01 KB CONTROL PANEL C-283 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161-Sheet 1 of 4 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PM05J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

MAIN CONTROL BOARD Project: 'Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 451.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50% Yes of SWEL items requiring such verification)?

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

Yes 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4. Is the anchorage free of visible cracks in the concrete near. the anchors? Yes 5. Is the anchorage configuration consistent with plant documentation? (Note: Yes This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

Drawing 6E-O-3391AL Revision C Weld length greater than 6" with a minimum spacing of 12" Verified at carpet along edge of panel Small portion of weld could not be verified at interior of panel (cabinet opened)since internal components obstruct the weld.C-284 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PM05J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

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

Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

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

Calculation 8.11.6.9-BYR03-090 Revision 0 analyzes the ceiling and determined that the panels would not fall during a seismic event.Masonry walls are seismic and would not collapse on the equipment.

9. Do attached lines have adequate flexibility to avoid damage? Yes 10. Based on the above seismic interaction evaluations, is equipment free of Yes potentially adverse seismic interaction effects?Other Adverse Conditions

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

Loose screw on bottom back of panel -not a structural/seismic issue. IR 1397684 written to repair condition.

C-285 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PM05J Equipment Class: (20) Insti Equipment

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Description:==

MAIN CC rumentation and Control Panels and Cabinets)NTROLBOARD Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos C-286 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Eauinment Descriotion:

2PM05J (20) Instrumentation and Control Panels and Cabinets MAIN CONTROL BOARD C-287 12Q-108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PM06J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

MAIN CONTROL BOARD Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 451.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50% Yes of SWEL items requiring such verification)?

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

Yes.3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors? Yes 5. Is the anchorage configuration consistent with plant documentation? (Note: Yes This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

Drawing 6E-O-3391AL Revision C Weld length greater than 6" with 12" spacing (cabinet not opened -welds on exterior) and acceptable.

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

C-288 12QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PM06J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

MAIN CONTROL 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?

Calculation 8.11.6.9-B YR03-090 Revision 0 analyzes the ceiling and determined that the panels would not fall during a seismic event.Seismic block walls nearby.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?Yes Yes Yes Yes Other Adverse Conditions

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

Thumb screw loose on back panel. Not a structural/seismic issue. IR 1397697 written for repair.Comments Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-289 12QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PM06J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

MAIN CONTROL BOARD Photos Byron 1 & 2 005 C-290 12QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet I of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PM07J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

MAIN CONTROL BOARD Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 451.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50%of SWEL items requiring such verification)?

No 2. Is the anchorage free of bent, broken, missing or loose hardware?Yes 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors?Yes 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.)

Not Applicable

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

Welds not visible due to carpeting and molding but environment is dny (control room) so it is unlikely that there is corrosion, since equipment doesn't vibrate it is unlikely that the welds have cracked. Based on the other weld inspections of Control Room anchorages, the weld for 2PMO7J is acceptable.

Yes C-291 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PM07J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

MAIN CONTROL BOARD Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

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

Calculation 8.11.6.9-BYR03-090 Revision 0 analyzes the ceiling and determined that the panels would not fall during a seismic event.Masonry walls are seismic and would not collapse on the equipment.

9. Do attached lines have adequate flexibility to avoid damage?Yes Yes Yes 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-292 1200108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment

==

Description:==

2PM07J (20) Instrumentation and Control Panels and Cabinets MAIN CONTROL BOARD Photos zi-mutJ tsyron 1 & z uut'C-293 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PM11J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

MAIN CONTROL BOARD Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 451.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50% No of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware?Yes 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors?Yes 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.)

Drawing 6E-O-3391AF Revision K Welds not visible due to carpeting and molding but environment is dry (control room) so it is unlikely that there is corrosion, since equipment doesn't vibrate it is unlikely that the welds haven't cracked. Based on the other weld inspections of Control Room anchorages, the weld for 2PMI IJ is acceptable.

Not Applicable C-294 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: r] N U Seismic Walkdown Checklist(SWC)

Equipment ID No.: 2PM11J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

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

Yes 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?

Calculation 8.11.6.9-BYR03-090 Revision 0 analyzes the ceiling and determined that the panels would not fall during a seismic event.Masonry walls are seismic and would not collapse on 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?Yes Yes Yes Yes Other Adverse Conditions

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

Yes C-295 12Q0108.20-R-002 Rev 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: [TN U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment

==

Description:==

2PM11J (20) Instrumentation and Control Panels and Cabinets MAIN CONTROL BOARD Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos 2PM11J Byron 1 & 2 006 C-296 i2QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PT-0514 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

STM GEN LOOP 2A STEAM PRESS PR Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 377.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50%of SWEL items requiring such verification)?

No 2. Is the anchorage free of bent, broken, missing or loose hardware?Not Applicable

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.)

Not Applicable Not Applicable Not Applicable

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

Instrument is securely mounted on well-supported rack Yes C-297 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PT-0514 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

STM GEN LOOP 2A STEAM PRESS PR 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?Yes Yes Yes Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/7/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-298 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PT-0514 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

STM GEN LOOP 2A STEAM PRESS PR Photos C-299 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PT-0546 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

STM GEN LOOP 2D STEAM PRESS PR Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 377.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50%of SWEL items requiring such verification)?

No 2. Is the anchorage free of bent, broken, missing or loose hardware?Not Applicable

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.)

Not Applicable Not Applicable Not Applicable

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

Instrument securely mounted on a well-supported rack Yes C-300 12Q-108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PT-0546 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

STM GEN LOOP 2D STEAM PRESS PR 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?Yes Yes Yes Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/7/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-301 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: [ N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2PT-0546 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

STM GEN LOOP 2D STEAM PRESS PR Photos C-302 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 5 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2RH01 PA Equipment Class: (6) Vertical Pumps Equipment

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Description:==

PUMP,2A RESIDUAL HEAT REMOVAL ASMBLY Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 346.00 ft, ALL Manufacturer/Model:

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.Anchoraqe 1. Is anchorage configuration verification required (i.e., is the item one of the 50% Yes of SWEL items requiring such verification)?

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

Yes 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors? Yes Grout pad is chipped but it is painted so it is a known condition.

Not an issue since grout does not serve a structural/seismic function.5. Is the anchorage configuration consistent with plant documentation? (Note: Yes This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

Drawing M-1219 Sheet 2 Revision AC Detail 9 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-303 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 5 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2RH01PA Equipment Class: (6) Vertical Pumps Equipment

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Description:==

PUMP,2A RESIDUAL HEAT REMOVAL ASMBLY Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

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

Yes 9. Do attached lines have adequate flexibility to avoid damage?Yes 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/21/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-304 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 5 Status: M-I N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment

==

Description:==

2RHOI PA (6) Vertical Pumps PUMP,2A RESIDUAL HEAT REMOVAL ASMBLY 2RH01PA (6) Vertical Pumps Photos 21-12 049 12050 C-305 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 5 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: iment

Description:

2RHt1 PA (6) Vertical Pumps PUMP,2A RESIDUAL HEAT REMOVAL ASMBLY 2RH01PA 12051 C-306 12001 08.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 5 of 5 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2RH01PA Equipment Class: (6) Vertical Pumps Equipment

==

Description:==

PUMP,2A RESIDUAL HEAT REMOVAL ASMBLY C-307 12Q-108-20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2RH01PA-A Equipment Class: (21) Tanks and Heat Exchangers Equipment

==

Description:==

RH PUMP 2A SEAL COOLER Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 346.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50%of SWEL items requiring such verification)?

No 2. Is the anchorage free of bent, broken, missing or loose hardware?Not Applicable

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.)

Not Applicable Not Applicable Not Applicable

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

Cooler is securely mounted to pump.Yes C-308 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: 7Y N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2RH01PA-A Equipment Class: (21) Tanks and Heat Exchangers Equipment

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Description:==

RH PUMP 2A SEAL COOLER 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?Yes Yes Yes Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/21/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-309 12Q0108.20-R-002 Rev. I Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment

==

Description:==

2RHOI PA-A (21) Tanks and Heat Exchangers RH PUMP 2A SEAL COOLER Photos None.C-310 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: FY] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SI8801A Equipment Class: (7) Fluid-Operated Valves Equipment

==

Description:==

CHG PUMP TO COLD LEG INJ ISOL ASMBLY Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 375.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50%of SWEL items requiring such verification)?

No 2. Is the anchorage free of bent, broken, missing or loose hardware?Not Applicable

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.)

Not Applicable Not Applicable Not Applicable 6.- Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?

Yes C-31 1 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SI8801A Equipment Class: (7) Fluid-Operated Valves Equipment

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Description:==

C HG PUMP TO COLD LEG INJ ISOL ASMBLY Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Handrail is modified to provide clearance for valve. Valve is supported nearby so large lateral movement will not occur during a seismic event and there will no impact with handrail..

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 flekibility to avoid damage?10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Yes Yes Yes Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/21/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-312 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SI8801A Equipment Class: (7) Fluid-Operated Valves Equipment

==

Description:==

CHG PUMP TO COLD LEG INJ ISOL ASMBLY Photos C-313 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment

==

Description:==

2SI8801A (7) Fluid-Operated Valves CHG PUMP TO COLD LEG INJ ISOL ASMBLY C-314 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SX004 Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

==

Description:==

CC HX 2 INLT VLV ASMBLY Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 330.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50%of SWEL items requiring such verification)?

No 2. Is the anchorage free of bent, broken, missing or loose hardware?Not Applicable

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.)

Not Applicable Not Applicable Not Applicable

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

Yes C-315 12Q-108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SX004 Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

==

Description:==

CC HX 2 INLT VLV ASMBLY Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Yes Small beam clamp over near-by pipe is orientated correctly and would not fall-not a structural/seismic issue.8. Are overhead equipment, distribution systems, ceiling tiles and lighting, and masonry block walls not likely to collapse onto the equipment?

Yes 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?Yes.Yes Other Adverse Conditions

11. Have you looked for and found no adverse seismic conditions that could- Yes adversely affect the safety functions of the equipment?

Comments Seismic walkdown team M. Delaney & P. Gazda 8/10/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-316 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SX004 Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

==

Description:==

CC HX 2 INLT VLV ASMBLY Photos 2SX004 byron 1 & 2 B-1U-12 026 C-317 12Qo108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SX005 Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

==

Description:==

U-0 CC HX INLET VLVASMBLY Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 330.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50%of SWEL items requiring such verification)?

No 2. Is the anchorage free of bent, broken, missing or loose hardware?Not Applicable

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.)

Not Applicable Not Applicable Not Applicable

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

C-318 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SX005 Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

==

Description:==

U-0 CC HX INLET VLVASMBLY 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?Yes Yes Yes Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/10/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-319 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SX005 Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

==

Description:==

U-0 CC HX INLET VLVASMBLY Photos C-320 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SX01AA Equipment Class: (21) Tanks and Heat Exchangers Equipment

==

Description:==

2A SX PUMP LUBE OIL COOLER Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 330.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50%of SWEL items requiring such verification)?

No 2. Is the anchorage free of bent, broken, missing or loose hardware?Not Applicable

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.)

Not Applicable Not Applicable Not Applicable

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

Cooler is securely mounted as an in-line component.

Yes C-321 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: T N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SX01AA Equipment Class: (21) Tanks and Heat Exchangers Equipment

==

Description:==

2A SX PUMP LUBE OIL COOLER 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?Yes Yes Yes Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/10/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-322 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SX01AA Equipment Class: (21) Tanks and Heat Exchangers Equipment

==

Description:==

2A SX PUMP LUBE OIL COOLER Photos 2SX01AA Byron 1 & 2 8-10-12 021 C-323 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SX01PA Equipment Class: (5) Horizontal Pumps Equipment

==

Description:==

PUMP, 2A ESSENTIAL SER WTR ASMBLY Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 330.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50% Yes of SWEL items requiring such verification)?

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

Yes 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors? Yes 5. Is the anchorage configuration consistent with plant documentation? (Note: Yes This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

Drawing M-1218 Revision AA 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-324 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: Mi- N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SX01PA Equipment Class: (5) Horizontal Pumps Equipment

==

Description:==

PUMP, 2A ESSENTIAL SER VVTR ASMBLY 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?Yes Yes Yes Yes Other Adverse Conditions

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

Minor leaks -not a structural/seismic issue.Comments Seismic walkdown team M. Delaney & P. Gazda 8/10/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/512012 C-325 1200108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: FTN U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SX01PA Equipment Class: (5) Horizontal Pumps Equipment

==

Description:==

PUMP, 2A ESSENTIAL SER WTR ASMBLY Photos C-326 12001 08.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: F-] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SX01PA Equipment Class: (5) Horizontal Pumps Eauioment Descrintion:

PUMP. 2A ESSENTIJ kL SER WTrR ASMVBLYSER WTR ASMBLY C-327 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SX033 Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

==

Description:==

-ESSENTIAL SERVICE WFR PMP 2A CROSSTIE VLV ASMBLY Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 330.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50%of SWEL items requiring such verification)?

No 2. Is the anchorage free of bent, broken, missing or loose hardware?Not Applicable

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.)

Not Applicable Not Applicable Not Applicable

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

Yes C-328 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SX033 Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

==

Description:==

ESSENTIAL SERVICE WTR PMP 2A CROSSTIE VLV ASMBLY 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?Yes Yes Yes Yes Other Adverse Conditions

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

No structural/seismic issues Comments Seismic walkdown team M. Delaney & P. Gazda 8/10/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-329 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment

==

Description:==

2SX033 (8) Motor-Operated and Solenoid-Operated Valves ESSENTIAL SERVICE WTR PMP 2A CROSSTIE VLV ASMBLY Photos Photos C-330 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: T N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SX169A Equipment Class: (7) Fluid-Operated Valves Equipment

==

Description:==

DG 2A SX VLVASMBLY Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 401.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50%of SWEL items requiring such verification)?

No 2. Is the anchorage free of bent, broken, missing or loose hardware?Not Applicable

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.)

Not Applicable Not Applicable Not Applicable

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

Yes C-331 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2SX169A Equipment Class: (7) Fluid-Operated Valves Equipment

==

Description:==

DG 2A SX VLVASMBLY 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?Yes Yes Yes Yes Other Adverse Conditions

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

No structural/seismic issues Comments Seismic walkdown team M. Delaney & P. Gazda 8/7/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-332 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment

==

Description:==

2SX1 69A (7) Fluid-Operated Valves DG 2A SX VLV ASMBLY Photos C-333 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2TE-0604 Equipment Class: (19) Temperature Sensors Equipment

==

Description:==

RHR LP 2A RETURN RTD Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 364.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50%of SWEL items requiring such verification)?

No 2. Is the anchorage free of bent, broken, missing or loose hardware?Not Applicable

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.)

Not Applicable Not Applicable Not Applicable

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

Yes C-334 1200108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2TE-0604 Equipment Class: (19) Temperature Sensors Equipment

==

Description:==

RHR LP 2A RETURN RTD 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?Yes Yes Yes Yes Other Adverse Conditions

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

No structural/seismic issues Comments Seismic walkdown team M. Delaney & P. Gazda 8/21/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-335 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: FTN U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2TE-0604 Equipment Class: (19) Temperature Sensors Equipment

==

Description:==

RHR LP 2A RETURN RTD Photos C-336 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: Y N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2VA01SA Equipment Class: (5) Horizontal Pumps Equipment

==

Description:==

2A SX Pp COOLER ESSENTIAL SERV WATER PUMP 95-10 Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 330.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50% Yes of SWEL items requiring such verification)?

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

Yes 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors? Yes Cracks in top surface (grout). Anchor embedded in base slab as shown on M-1218 Revision AA and is acceptable.

IR 1399420 was written to document condition.

Not a structural/seismic concem.5. Is the anchorage configuration consistent with plant documentation? (Note: Yes This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

Drawing M-1218 Revision AA 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-337 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2VAO1SA Equipment Class: (5) Horizontal Pumps Equipment

==

Description:==

2A SX Pp COOLER ESSENTIAL SERV WATER PUMP 95-10 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

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

Yes 9. Do attached lines have adequate flexibility to avoid damage?Yes 10. ' Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/10/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-338 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2VA01SA Equipment Class: (5) Horizontal Pumps Equipment

==

Description:==

2A SX Pp COOLER ESSENTIAL SERV WATER PUMP 95-10 Photos C-339 12QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2VA02SA Equipment Class: (10) Air Handlers Equipment

==

Description:==

2A RHR PUMP ROOM CUB CLR ASMBLY Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 346.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50% Yes of SWEL items requiring such verification)?

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

Yes 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4.- Is the anchorage free of visible cracks in the concrete near the anchors?

• Yes 5. Is the anchorage configuration consistent with plant documentation? (Note: Yes This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

Drawing M-1219 Sheet 3 Revision AH Anchorage configuration matches drawing with the exception that there is no grout pad. Grout pad is not required for structural/seismic integrity

-not an issue. IR 1422972 written to generate drawing change.6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-340 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2VA02SA Equipment Class: (10) Air Handlers Equipment

==

Description:==

2A RHR PUMP ROOM CUB CLR ASMBLY 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?

Masonry block walls are seismic and would not collapse on 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?Yes Yes Yes Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/21/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-341 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2VA02SA Equipment Class: (10) Air H, Equipment

==

Description:==

2A RHR P indlers UMP ROOM CUB CLR ASMBLY Photos C-342 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2VA06SA Equipment Class: (10) Air Handlers Equipment

==

Description:==

COOLERCENTRIFUGAL CHARGING PUMP 2A Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 364.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50% Yes of SWEL items requiring such verification)?

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

Yes 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors? Yes 5. Is the anchorage configuration consistent with plant documentation? (Note: Yes This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

M-1219 Sheet 3 Revision AH 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-343 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2VA06SA Equipment Class: (10) Air Handlers Equipment

==

Description:==

COOLER,CENTRIFUGAL CHARGING PUMP 2A Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

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

Masonry walls are seismic and would not collapse on equipment 9. Do attached lines have adequate flexibility to avoid damage?.Yes Yes 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/20/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-344 1-2Q108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M-i N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2VA06SA Equipment Class: (10) Air Handlers Equipment

==

Description:==

COOLER,CENTRIFUGAL CHARGING PUMP 2A Photos 2VA06SA Byron 1 & 2 8-20-12 075 C-345 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2VD01CA Equipment Class: (9) Fans Equipment

==

Description:==

DIESEL GENERATOR ROOM VENT FAN ASMBLY Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 401.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50% Yes of SWEL items requiring such verification)?

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

Yes 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors? Yes 5. Is the anchorage configuration consistent with plant documentation? (Note: Yes This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

Drawing M-1222 Sheet 6 Revision K 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-346 12QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2VD01CA Equipment Class: (9) Fans Equipment

==

Description:==

DIESEL GENERATOR ROOM VENT FAN ASMBLY 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?Yes Yes Yes Yes Other Adverse Conditions

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

Fan assembly only component in room -no structural/seismic issues Comments Seismic walkdown team M. Delaney & P. Gazda 8/7/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-347 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment

==

Description:==

2VD01 CA (9) Fans DIESEL GENERATOR ROOM VENT FAN ASMBLY Photos zvuuusý,, byron -10 zz C-348 12001 08.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2VD01CA Equipment Class: (9) Fans n: DIESEL GENERATOR ROOM VENT FAN ASMBLY C-349 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2VE04C Equipment Class: (9) Fans Equipment

==

Description:==

DIV 21 MEER Exh Fan Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 451.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50%of SWEL items requiring such verification)?

No 2. Is the anchorage free of bent, broken, missing or loose hardware?Yes 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors?Yes 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.)

Not Applicable

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

Yes C-350 12Q-108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2VE04C Equipment Class: (9) Fans Equipment

==

Description:==

DIV 21 MEER Exh Fan 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?

Roof drain piping has Victaulic couplings but pipe is supported at each wall and at branch lines limiting displacement.

Not a structural/seismic issue.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?Yes Yes Yes Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 816112 am'Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-351 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment

==

Description:==

2VE04C (9) Fans DIV 21 MEER Exh Fan Photos ZLVU4U tsyron 1 & z uJ1 o C-352 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2VE05C Equipment Class: (9) Fans Equipment

==

Description:==

DIV 22 MEER Exh Fan Project: Byron 2 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 451.00 ft, ALL Manufacturer/Model:

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 anchorage configuration verification required (i.e., is the item one of the 50% No of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware?Yes 3. Is the anchorage free of corrosion that is more than mild surface oxidation?

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors?Yes 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.)

Not Applicable

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

Yes C-353 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: Y N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2VE05C Equipment Class: (9) Fans Equipment

==

Description:==

DIV 22 MEER Exh Fan 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?

Masonry walls are seismic and would not collapse on 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?Yes Yes Yes Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-354 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: FTN U Seismic Walkdown Checklist (SWC)Equipment ID No.: 2VE05C Equipment Class: (9) Fans Equipment

==

Description:==

DIV 22 MEER Exh Fan Photos None.C-355 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161$Area Walk-By Checklists (AWCs)Table D-1 provides the building, elevation, and location of each area as well as a list of SWEL items associated with each area, and page numbers of each Area Walk-By Checklist.

D-I 12Q-108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Table D-1. Summary of Area Walk-By Checklists AREA WALK- DESCRIPTION ID COMMENTS PAGE BY 2PM05J 2PM06J D 1 Aux El 451 (Unit 1 and 2 Control Room) 2PM07J D-5 2PM07IJ___

2PM11J 2DC03E Aux El 451 (Unit 2 MEER Room -Division 2DC05E _ _ _7 2 2)2DC10J __________D-7 21) 21P05E 2VE04C 3 Aux El 451 Battery Room 212 2DC02E D- 9 2DC04E 2DC06E 2DC06EA 4 Aux El 451 Unit 2 MEER Room Division 2 2DC06E D-11 21P02E 21P06E 2VE05C 6 Aux El 451 U1 and U2 HV (OVC09Y and OVC01JB D- 13 0VC01JB)2PA01J 2PA02J 2PA03J 2PA04J 2PA06J 2PA07J 2PA08J 2PA09J 2PA10J 7 Aux El 451 AEER Unit 2 2PAIIJ D-15 2PA12J 2PA13J 2PA14J 2PA27J 2PA28J 2PA33J 2PA34J 2PA51 J 2PA52J 8 Aux El 401 MSIV 2A/2D Room 2MS018D D- 17 9 Aux El 451 Unit I and 2 (U1 HV -OVC02FA D- 19 OVC01JA, OVC15J, OVC02FA) 2MS018D 2PT-0514 _______ ___10 Aux El 377, MSIV 2A/2D Room 2PT-0546 D- 21 2MS0015C 11 Aux El 401 MSIV 2B/2C Room 2M01CD- 23 2MS018C Table D-1 Page 1 of 3 D-2 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 AREA WALK- DESCRIPTION ID COMMENTS PAGE BY 17 ESWCT El 377 (2AP93E) 2AP93E D- 25 ESWCT El 860 B Valve Room (valve 0SX162B chamber A2) OWWO19B 21 ESWCT El 860, South Elec Room (U2 2AP92E D- 29 Bus 232) 2AP98E 22 ESWCT ROOF NONE D- 31 24 Aux El 401, 28 DG Room 2PL08J D- 33 2DG01KA 25 Aux El 401, 2A DG Room 2PL07J D- 35 2SX1 69A 2VD01CA 27 Aux El 373 Diesel Oil Storage Tank Room 2DO01TA D- 37 (U2)34 Aux El 426, U2 Division 11 Switchgear 2AP1 1 E D- 39 Room 35 Aux El 426, U2 Div 12 Switchgear Room 2AP13E SWEL 2 D- 41 36 Aux El 364 Area 5 (curved wall near OFC006A SWEL 2 D- 43 MCC)0FC8754 SWEL 2 0FC8790 SWEL 2 FH El 401 U1 & U2 Spent Fuel Pump 2FC005 SWEL 2 42 Room 2FC006 SWEL 2 D- 45 2FC01P SWEL 2 2FC8793 SWEL 2 2FC004A SWEL 2 2FC004B SWEL 2 2FC01A SWEL 2 2FC8756 SWEL 2 43 FH El 401, U2 Spent Fuel HX Room 2FC8757 SWEL 2 D- 47 2FC8762A SWEL 2 2FC8762B SWEL 2 2FC8792A SWEL 2 2FC8792B SWEL 2 44. 2FC022 SWEL 2D-4 44 FH El 401 Adjacent to trackbay 2PI-0633 __ _2 _ D- 49 45 RSH El 702, A & B Pump Room OSX02JA D- 51 2AF005C __________

48 Aux El 364 Unit 2 Open area 2AF005G D- 53 49 Aux El 346 U2 open area 2AP38E D- 55 50 Aux, El 346 near 1AP93E 0SX007 D- 57 2SX004 2SX01AA 51 Aux El 330 2A SX Pump Room 2SX01PA D- 59 2SX033 2VA01 SA 52 Aux El 330, B SX Pump Room 2SX005 D- 61 Table D-1 Page 2 of 3 D-3 12Q"108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 AREA WALK- DESCRIPTION ID COMMENTS PAGE BY 55 Aux El 426 U2 near 2AP27E 2AP27E D- 63 56 Aux El 414 Elec Pen Area near 2AP25E 2AP25E D- 65 2AF006A 59 Aux El 383 near 2AF01PA 2AF017A D- 67 2AF01 PA 60 Aux El 383, 2A Aux Feed Pump Room 2AF01 EA-A SWEL 2 D- 69 OFC012 2CC01PA 61 Aux El 364 Ul and U2 open area 2CC9412A D- 71 2FT-AF012 21Y-0606 63 Aux El 364 2CV01PA Room 2CV01PA D--73 2VA06SA D-64A Aux El 383 MCR Chillers OWO01CA D- 75 2CV112E 2CV8105 2CV8804A SWEL 2 65 Aux El varies, Area 7 curved wall 2FC011 SWEL 2 D- 77 2FC8758 2SI8801A 2TE-0604 2RH01PA 67 Aux El 346 2A RH Pump Room 2RH01 PA-A D- 79 2VA02SA OUTAGE 2AP05E OUTAGE 2AP10E SWEL 2 OUTAGE 2FC009 SWEL 2 OUTAGE 2FC012 OUTAGE, 2LT-0459 OUTAGE 2LT-0517 OUTAGE 2LT-0527 OUTAGE 2PT-0455 OUTAGE 2PT-0457 OUTAGE 2RD05E OUTAGE 2RH8702A OUTAGE 2RY32MA OUTAGE 2RY32MB OUTAGE 2RY455A OUTAGE 2TE-RC022A OUTAGE 2TE-RC023A OUTAGE 2VP01AA Table D-1 Page 3 of 3 D-4 12Q-108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: Y N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 01 Aux El 451 (Unit 1 and 2 Control Room)Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially -Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

Well-supported fire extinguisher and emergency lighting 2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?.Calculation 8.11.6.9-BYR03-090 Revision 0 analyzes the ceiling and determined that the panels would not fall during a seismic event.Diffuser panel at Panels lPMO7J and IPMO8J is sagging. IR 1397699 written.Not a structural/seismic issue.5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?D-5 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: i- N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 01 Aux El 451 (Unit 1 and 2 Control Room)7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Locker and cabinets on east wall have adequate standoff distance in accordance with Byron Seismic Housekeeping Procedure that there are no seismic interaction issues with safety related equipment.

Also the cabinets and locker are on carpeting and would not easily slide due to friction between the carpet and cabinets.8. Have you looked for and found no other seismic conditions that could Yes adversely affect the safety functions of the equipment in the area?There are loose screws on the backs of several control board panels. Most were tightened by the equipment operator as the walkdowns were performed.

The following IRs address screws that were stripped or couldn't be tightened:

IR 1397697 for Panel 2PMO6J IR 1397684 for Panel 2PMO5J IR 1399490 (general)Not a structural/seismic issue Comments Seismic walkdown team M. Delaney & P. Gazda 8/9/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-6 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 02 Aux El 451 (Unit 2 MEER Room -Division 21)Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?Cable tray riser -cables are contained at base and at top with grips. Riser is well-supported at top and bottom -not a structural/seismic issue.4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Masonry walls are seismic and would not collapse on adjacent equipment.

5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?Roof drain piping has Victaulic couplings but pipe is supported at each wall and at branch lines limiting displacement.

Not a structural/seismic issue.6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

D-7 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 02 Aux El 451 (Unit 2 MEER Room -Division 21)8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Small diagonal crack near 2JB 1282A -not a structural/seismic issue Yes Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-8 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 03 Aux El 451 Battery Room 212 Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Visible S-hooks appear closed. IR 1399385 written to check S-hooks based on observations in other areas of the plant.5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

D-9 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: MI N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 03 Aux El 451 Battery Room 212 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-10 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 04 Aux El 451 Unit 2 MEER Room Division 2.Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Masonry walls are seismic and will not collapse on equipment 5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

D-11 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: F N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 04 Aux El 451 Unit 2 MEER Room Division 2 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-12 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 06 Aux El 451 U1 and U2 HV (OVC09Y and OVC01JB)Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3: Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Masonry walls are seismic and would not collapse on equipment 5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

D-13 12QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 06 Aux El 451 U1 and U2 HV (OVC09Y and OVC01JB)8. Have you looked for and found no other seismic conditions that could Yes adversely affect the safety functions of the equipment in the area?Water on floor due to overhead leak and drain line condensation

-not a structural/seismic issue since it is not near any critical components Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-14 1200108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: T N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 07 Aux El 451 AEER Unit 2 Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?Overhead cable trays are well-supported

4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Seismic block walls Partially open S-hooks. Lights not directly over panels so damage unlikely and since the hooks are partially open, lights will not disengage.

IR 1397694 written to inspect and close.5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?Fire protection panels welded at base but are not bolted together -not an issue since they are non-safety related (base detail shown on Drawing 6E-O-3391D, Revision AC, Detail 59)6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

D-15 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: 7 N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 07 Aux El 451 AEER Unit 2 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Appendix R light OLLOIOE has a dented support pan. IR 1397700 written for repair. Light is adequately supported so not an immediate concern.Yes Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-16 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: IN U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 08 Aux El 401 MSIV 2A/2D Room Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?D-1 7 12Q-108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 08 Aux El 401 MSIV 2A/2D Room 7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Permanent scaffolding is well-supported and tied off 8. Have you looked for and found no other seismic conditions that could Yes adversely affect the safety functions of the equipment in the area?Degradation at expansion joint with containment wall (at ceiling) -not a structural/seismic issue. The joints in question are made up of some sort of compressible/flexible material.

Since the containment structure is a standalone structure and is analyzed and designed that way there is a gap between it and an adjacent structure (like the MSIV rooms). The gap is sized to allow seismic movements of each structure and is filled with the flexible material.

The material is only there to close the opening and has no structural or seismic significance.

Comments Seismic walkdown team M. Delaney & P. Gazda 8/7/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-1 8 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: V N U Area Walk-By Checklist (AWC)Area Walk-by 09 Aux El 451 Unit 1 and 2 (Ul HV -OVC01JA, Location (Bldg, Elev, Room/Area):

OVC15J, OVC02FA)Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?Overhead HVAC is well-supported.

4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Masonry walls are seismic and would not collapse on equipment 5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?Fire protection piping is well-supported.

Fire protection valve 0FP332 valve is leaking. IR1397710 was written. No critical components in vicinity so not an immediate concern.Roof drain line with Victaulic couplings enters room and drops down and up (similar to a U shape) and exits room. Line could swing from side to side resulting in leaking at the top couplings however the equipment below is partially sealed with closed entry points and tops so no damage would occur.IR 1397711 was written.D-1 9 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Area Walk-by 09 Aux El 451 Unit 1 and 2 (U1 HV- OVC01JA, Location (Bldg, Elev, Room/Area):

OVC15J, OVC02FA)6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?7. Does it appear that the area is free of potentially adverse seismic interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Yes 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-20 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 10, Aux El 377, MSIV 2A2D Room Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

D-21 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: T N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 10, Aux El 377, MSIV 2A/2D Room 8. Have you looked for and found no other seismic conditions that could Yes adversely affect the safety functions of the equipment in the area?No structural/seismic issues in area.Comments Seismic walkdown team M. Delaney & P. Gazda 8/7/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-22 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 11 Aux El 401 MSIV 2B/2C Room Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially adverse seismic conditions (if visible without necessarily opening cabinets)?

Yes 2. Does anchorage of equipment in the area appear to be free of significant degraded conditions?

Yes 3. Based on a visual inspection from the floor, do the cable/conduit raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?Yes 4. Does it appear that the area is free of potentially adverse seismic spatial interactions with other equipment in the area (e.g., ceiling tiles and lighting)?.

Yes 5. Does it appear that the area is free of potentially adverse seismic interactions that could cause flooding or spray in the area?Yes 6. Does it appear that the area is free of potentially adverse seismic interactions that could cause a fire in the area?Yes D-23 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: T N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 11 Aux El 401 MSIV 2B1/2C Room 7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Two permanent scaffolds in area are well-constructed and tied off.8. Have you looked for and found no other seismic conditions that could Yes adversely affect the safety functions of the equipment in the area?Degradation at expansion joint with containment wall (at ceiling) -not a structural/seismic issue. The joints in question are made up of some sort of compressible/flexible material.

Since the containment structure is a standalone structure and is analyzed and designed that way there is a gap between it and an adjacent structure (like the MSIV rooms). The gap is sized to allow seismic movements of each structure and is filled with the flexible material.

The material is only there to close the opening and has no structural or seismic significance.

Missing bolts at the MSIV accumulator

-no sign of leakage and pressure is holding. Discussion with System Engineer indicates that bolts are only used for rigging. Not a structural/seismic issue.Comments Seismic walkdown team M. Delaney & P. Gazda 8/7/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-24 12QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 17 ESWCT El 377 (2AP93E)Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

A few partially open S-hooks on lights but not directly over the equipment so they would not damage equipment if they came loose. It is unlikely the lights would come disengaged since the hooks are only partially open. IR 1398127 was written.5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

D-25 12QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 17 ESWCT El 377 (2AP93E)8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Small diagonal crack in south wall -not a structural/seismic issue due to its small size.Yes Missing bolt at top of middle panel for 2AP99E. Adequate anchors to hold panel in place -not a structural/seismic issue and no additional work required.Leak in east wall has existing IR written. Not an active leak.Comments Seismic Walkdown Team M. Delaney & P. Gazda 8/7/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 PhilipGazda 10/5/2012 Photos None.D-26 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 19, ESWCT El 860 B Valve Room (valve chamber A2)Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially adverse seismic conditions (if visible without necessarily opening cabinets)?

Yes 2. Does anchorage of equipment in the area appear to be free of significant degraded conditions?

Yes 3. Based on a visual inspection from the floor, do the cable/conduit raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?Yes 4. Does it appear that the area is free of potentially adverse seismic spatial interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Yes 5. Does it appear that the area is free of potentially adverse seismic interactions that could cause flooding or spray in the area?Yes 6. Does it appear that the area is free of potentially adverse seismic interactions that could cause a fire in the area?Yes 7. Does it appear that the area is free of potentially adverse seismic interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Yes D-27 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 19, ESWCT El 860 B Valve Room (valve chamber A2)8. Have you looked for and found no other seismic conditions that could Yes adversely affect the safety functions of the equipment in the area?No structural/seismic issues Comments Seismic Walkdown Team M. Delaney & P. Gazda 8/7/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-28 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 21, ESWCT El 860, South Elec Room (U2 Bus 232)Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Several open S-hooks. Lights not directly over equipment therefore wouldn't damage equipment if they fell. S-hooks partially open so lights would not become disengaged during a seismic event. IR 1398127 written to have S-hooks verified and closed.5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

D-29 12QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 21, ESWCT El 860, South Elec Room (U2 Bus 232)8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Numerous cracks in walls -cracks are very small and therefore are not a structural/seismic issue Yes Unit I equipment 1AP98E missing one bolt at back panel. Adequate anchorage in place -not a structural/seismic issue. No additional action required.Comments Seismic Walkdown Team M. Delaney & P. Gazda 8/7/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-30 12Q-108.20-R-002 Rev. I Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 22, ESWCT Roof (no components on SWEL)Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

Eight SX Cooling Tower Motors are well-anchored.

No other components in area.2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

D-31 1200108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 22, ESWCT Roof (no components on SWEL)8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Small cracks in concrete -not a structural/seismic issue due to their size.No overhead components and no seismic spatial interaction issues.Comments Seismic Walkdown Team M. Delaney & P. Gazda 8/7/12 am Yes Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-32 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 24, Aux El 401, 2B DG Room Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Masonry walls are seismic and would not collapse on equipment 5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?Sight glass protected with no vulnerabilities

7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

D-33 12Q-108.20-R-002 Rev. I Correspondence No.: RS-12-161 Sheet 2 of 2 Status: FT N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 24, Aux El 401, 2B DG Room 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic Walkdown Team M. Delaney & P. Gazda 8/7/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-34 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 25, Aux El 401, 2A DG Room Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Masonry walls are seismic and would not collapse on equipment 5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?Sight glass well-mounted with no vulnerabilities

7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

D-35 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 25, Aux El 401, 2A DG Room 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic walkdown team M. Delaney & P. Gazda 8/7/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-36 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: F N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 27, Aux El 373 Diesel Oil Storage Tank Room (U2)Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially adverse seismic conditions (if visible without necessarily opening cabinets)?

Yes 2. Does anchorage of equipment in the area appear to be free of significant degraded conditions?

Yes 3. Based on a visual inspection from the floor, do the cable/conduit raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?Yes 4. Does it appear that the area is free of. potentially adverse seismic spatial interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Yes 5. Does it appear that the area is free of potentially adverse seismic interactions that could cause flooding or spray in the area?Yes 6. Does it appear that the area is free of potentially adverse seismic interactions that could cause a fire in the area?Yes D-37 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: FY-] N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 27, Aux El 373 Diesel Oil Storage Tank Room (U2)7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Ladder is tied off at top and bottom in accordance With Byron Seismic Housekeeping Procedure 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic Walkdown team M. Delaney & P. Gazda 8/7/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-38 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 34, Aux El 426, U2 Division 11 Switchgear Room Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Seismic block walls S-hooks for lights appear closed from floor 5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?D-39 12Q0108.2O-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: ' N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 34, Aux El 426, U2 Division 11 Switchgear Room 7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Breaker is stored in labeled breaker storage area and cannot roll. Ops bench is far enough away from equipment.

Both in accordance with Byron Seismic Housekeeping Procedure 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Some back panels are bowed at breaker.This is cosmetic and not a structural/seismic issue.Yes Comments Seismic Walkdown team M. Delaney & P. Gazda 8/8/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-40 12QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 35, Aux El 426, U2 Div 12 Switchgear Room Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially adverse seismic conditions (if visible without necessarily opening cabinets)?

Yes 2. Does anchorage of equipment in the area appear to be free of significant degraded conditions?

Yes 3. Based on a visual inspection from the floor, do the cable/conduit raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?Yes 4. Does it appear that the area is free of potentially adverse seismic spatial interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Yes 5. Does it appear that the area is free of potentially adverse seismic interactions that could cause flooding or spray in the area?Yes 6. Does it appear that the area is free of potentially adverse seismic interactions that could cause a fire in the area?Yes 7. Does it appear that the area is free of potentially adverse seismic interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Yes D-41 12-0108.20-R-002 Rev. I Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 35, Aux El 426, U2 Div 12 Switchgear Room 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic Walkdown team M. Delaney & P. Gazda 8/8/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-42 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 36, Aux El 364 Area 5 (curved wall near MCC)Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially adverse seismic conditions (if visible without necessarily opening cabinets)?

Yes 2. Does anchorage of equipment in the area appear to be free of significant degraded conditions?

Yes 3. Based on a visual inspection from the floor, do the cable/conduit raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?Yes 4. Does it appear that the area is free of potentially adverse seismic spatial interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Yes 5. Does it appear that the area is free of potentially adverse seismic interactions that could cause flooding or spray in the area?Yes 6. Does it appear that the area is free of potentially adverse seismic interactions that could cause a fire in the area?Yes 7. Does it appear that the area is free of potentially adverse seismic interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Yes D-43 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 36, Aux El 364 Area 5 (curved wall near MCC)8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic walkdown team M. Delaney & P. Gazda 8/8/12 pm Note that the SWEL component OFC006A is a common component included on the Unit 2 SWEL and is located in Unit 1 Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-44 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 42, FH El 401 U1 & U2 Spent Fuel Pump Room Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Seismic block walls (removable portions protected by grating)5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?Sight glasses are protected with no potential impact from overhead components

7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

D-45 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: Y N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 42, FH El 401 Ul & U2 Spent Fuel Pump Room 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic walkdown team M. Delaney & P. Gazda 8/9/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 62 /7 Philip Gazda 10/5/2012 Photos None.D-46 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: E N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 43, FH El 401, U2 Spent Fuel HX Room Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Masonry walls are seismic and could not collapse on equipment.

Removable portions secured by grating 5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

D-47 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 43, FH El 401, U2 Spent Fuel HX Room 8. Have you looked for and found no other seismic conditions that could Yes adversely affect the safety functions of the equipment in the area?Hairline cracks -not a structural/seismic issues since cracks are small.Comments Seismic walkdown team M. Delaney & P. Gazda 8/9/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-48 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 44, FH El 401 Adjacent to trackway Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions, with other equipment in the area (e.g., ceiling tiles and lighting)?

Masonry walls are seismic and would not collapse on equipment 5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?Fire protection piping is well-supported

6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?D-49 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 44, FH El 401 Adjacent to trackway 7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Cabinets orientated correctly to avoid impacting instruments with wheels chocked in accordance with Byron Seismic Housekeeping Procedures

8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic walkdown team 8/9/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-50 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: Y N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 45, RSH El 702, A & B Pump Room Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Open S-hooks (near A pump) not directly over equipment and would not impact equipment.

Partially open so lights would not disengage.

IR 1399405 was written.5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?7. Does it appear that the area is, free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

D-51 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 45, RSH El 702, A & B Pump Room 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic Walkdown Team M. Delaney & P. Gazda 8/9/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-52 12Q-108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 48, Aux El 364 Unit 2 Open area Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Masonry walls are seismic and would not collapse on equipment 5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?D-53 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 48, Aux El 364 Unit 2 Open area 7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

At east wall there is equipment 9" from instruments but base is 7" from wall so it is not possible for the equipment to move into the instrument.

Storage box 12" away from equipment with chocked wheels and won't impact tank in accordance with Byron Seismic Housekeeping Procedure.

8. Have you looked for and found no other seismic conditions that could Yes adversely affect the safety functions of the equipment in the area?Comments Seismic walkdown team M. Delaney & P. Gazda 8/10/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 (7 " Philip Gazda 10/5/2012 Photos None.D-54 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: [Y N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 49, Aux El 346 U2 open area Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Masonry walls are seismic and would not collapse on equipment 5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?D-55 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: F-] N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 49, Aux El 346 U2 open area 7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Storage boxes in area are not near safety-related components (i.e. box is 54" from 2LI-CS022 on 2PL92J but instrument is non-safety related so not an issue)8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Instrument OFIT-GWO01 has no nuts at connection but appears to be drilled and tapped. IR 1399436 written and issue is resolved.Yes Comments Seismic walkdown team 8/10/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 IPhilip Gazda 10/5/2012 Photos None.D-56 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 50, Aux, El 346 near 1AP93E Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially adverse seismic conditions (if visible without necessarily opening cabinets)?

Yes 2. Does anchorage of equipment in the area appear to be free of significant degraded conditions?

Yes 3. Based on a visual inspection from the floor, do the cable/conduit raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?Yes 4. Does it appear that the area is free of potentially adverse seismic spatial interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Yes 5. Does it appear that the area is free of potentially adverse seismic interactions that could cause flooding or spray in the area?Yes 6. Does it appear that the area is free of potentially adverse seismic interactions that could cause a fire in the area?Yes D-57 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: r-Y N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 50, Aux, El 346 near 1AP93E 7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Gas bottles restrained in accordance with Byron procedure MA-AA-716-026 Rev 10 Scaffolding adequately braced, connected floor and ceiling in accordance with Exelon Scaffolding Procedure 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic walkdown team M. Delaney & P. Gazda 8/10/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-58 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 51, Aux El 330 2A SX Pump Room Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?D-59 12--108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 51, Aux El 330 2A SX Pump Room 7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Scaffolding parts stored away from safety-related components in a safe area in accordance with Byron Seismic Housekeeping Procedure 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic walkdown team M. Delaney & P. Gazda 8/10/12 Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-60 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: T N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 52, Aux El 330, B SX Pump Room Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?D-61 12Q-108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 52, Aux El 330, B SX Pump Room 7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Ladders stored on sides and not near equipment in accordance with Byron Seismic Housekeeping Procedure 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic walkdown team M. Delaney & P. Gazda 8/10/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-62 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 55, Aux El 426 U2 near 2AP27E Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Masonry walls are seismic and would not collapse on equipment 5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?D-63 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 55, Aux El 426 U2 near 2AP27E 7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Temporary power station has chocked wheels and is far enough away from components Extra handrails are tied off Ladder in ladder storage area Ops equipment is chained All in accordance with Byron Seismic Housekeeping Procedure 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic walkdown team M. Delaney & P. Gazda 8/20/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 I'Philip Gazda 10/5/2012 Photos None.D-64 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 56, Aux El 414 Elec Pen Area near 2AP25E Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?D-65 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M-J N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 56, Aux El 414 Elec Pen Area near 2AP25E 7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Ladders are secured in accordance with Byron Seismic Housekeeping Procedure 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Small hairline cracks in floor behind 2RYO3ED -not a structural/seismic issue Yes Comments Seismic walkdown team M. Delaney & P. Gazda 8/20/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-66 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 59, Aux El 383 near 2AF01 PA Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?D-67 12QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 59, Aux El 383 near 2AF01 PA 7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Scaffold stored in scaffold storage area Construction equipment is secured Extra handrails are tied off Spare breaker moved 12" from bus All in accordance with Byron Seismic Housekeeping Procedure Permanent scaffold in area is well-constructed

8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic walkdown team M. Delaney & P. Gazda 8/20/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-68 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 60, Aux El 383, 2A Aux Feed Pump Room Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?Masonry walls are seismic and would not collapse on equipment 6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?Fuel level indicator 2LI-AF8000 is well-supported

7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

D-69 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 60, Aux El 383, 2A Aux Feed Pump Room 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic walkdown team M. Delaney & P. Gazda 8/20/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-70 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: Y N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 61, Aux El 364 U1 and U2 open area Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Masonry walls are seismic and would not collapse on equipment 5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?Fire protection piping is well-supported

6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?D-71 12Q-108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 61, Aux El 364 U1 and U2 open area 7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Construction equipment is staged away from components.

Ladder chained.All in accordance with Byron Seismic Housekeeping Procedure 8. Have you looked for and found no other seismic conditions that could Yes adversely affect the safety functions of the equipment in the area?Comments Seismic walkdown team 8/20/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-72 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 63, Aux El 364 2CV01 PA Room Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1.

• Does anchorage of equipment in the area appear to be free of potentially adverse seismic conditions (if visible without necessarily opening cabinets)?

Yes 2. Does anchorage of equipment in the area appear to be free of significant degraded conditions?

Yes 3. Based on a visual inspection from the floor, do the cable/conduit raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?Yes 4. Does it appear that the area is free of potentially adverse seismic spatial interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Yes 5. Does it appear that the area is free of potentially adverse seismic interactions that could cause flooding or spray in the area?Yes 6. Does it appear that the area is free of potentially adverse seismic interactions that could cause a fire in the area?Yes 7. Does it appear that the area is free of potentially adverse seismic interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Yes D-73 1200108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 63, Aux El 364 2CV01PA Room 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic walkdown team M. Delaney & P. Gazda 8/20/12 pm No issues in area Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-74 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 64a, Aux El 383 MCR Chillers Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially Yes adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant Yes degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit raceways and Yes HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?4. Does it appear that the area is free of potentially adverse seismic spatial Yes interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Masonry walls are seismic and would not collapse on equipment 5. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause flooding or spray in the area?6. Does it appear that the area is free of potentially adverse seismic interactions Yes that could cause a fire in the area?7. Does it appear that the area is free of potentially adverse seismic interactions Yes associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

D-75 12Qo108.20-R-002 Rev. I Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 64a, Aux El 383 MCR Chillers 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic Walkdown Team M. Delaney & P. Gazda 8/20/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-76 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: F N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 65, Aux El varies, Area 7 curved wall Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially adverse seismic conditions (if visible without necessarily opening cabinets)?

Yes 2. Does anchorage of equipment in the area appear to be free of significant degraded conditions?

Yes 3. Based on a visual inspection from the floor, do the cable/conduit raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?Yes 4. Does it appear that the area is free of potentially adverse seismic spatial interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Yes 5. Does it appear that the area is free of potentially adverse seismic interactions that could cause flooding or spray in the area?Yes 6. Does it appear that the area is free of potentially adverse seismic interactions that could cause a fire in the area?Yes 7. Does it appear that the area is free of potentially adverse seismic interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Yes D-77 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U a Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 65, Aux El varies, Area 7 curved wall Are 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Yes Comments Seismic Walkdown Team M. Delaney & P. Gazda 8/21/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.D-78 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 2 Status: N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 67, Aux El 346 2A RH Pump Room Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. 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.1. Does anchorage of equipment in the area appear to be free of potentially adverse seismic conditions (if visible without necessarily opening cabinets)?

Yes 2. Does anchorage of equipment in the area appear to be free of significant degraded conditions?

Yes 3. Based on a visual inspection from the floor, do the cable/conduit raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside "acceptable limits)?Yes 4. Does it appear that the area is free of potentially adverse seismic spatial interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

Yes 5. Does it appear that the area is free of potentially adverse seismic interactions that could cause flooding or spray in the area?Yes 6. Does it appear that the area is free of potentially adverse seismic interactions that could cause a fire in the area?7. Does it appear that the area is free of potentially adverse seismic interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

Yes Yes D-79 12QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 2 Status: M N U Area Walk-By Checklist (AWC)Location (Bldg, Elev, Room/Area):

Area Walk-by 67, Aux El 346 2A RH Pump Room 8. Have you looked for and found no other seismic conditions that could adversely affect the safety functions of the equipment in the area?Ground water degradation on wall at pump -not a structural/seismic issue since it is not an active leak Yes Comments Seismic walkdown team M. Delaney & P. Gazda 8/21/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/512012 Photos None.D-80 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 EPlan for Future Seismic Walkdown of Inaccessible Equipment Seventeen (17) items could not be walked down during the 180-day period following the issuance of the 10CFR50.54(f) letter due to their being inaccessible.

The items will be walked down during a unit outage or time when the equipment is accessible, as appropriate.

Table E-1 summarizes the reasons each item is inaccessible during normal plant operation and notes the Byron Station Issue Report IR that has been written to track completion of the Seismic Walkdowns (and Area Walk-bys) for these items. It is noted that SSCs identified on Table E-1 require a complete inspection including, as applicable, internal inspections of electrical cabinets for other adverse seismic conditions, as required.Certain cabinets require supplemental internal inspection for other adverse seismic conditions as summarized in Table E-2. Supplemental internal inspections of these cabinets are required due to clarifications provided by the NRC after the online seismic walkdowns were completed.

These Supplemental inspections will be completed during a unit outage or another time when the equipment is accessible, as appropriate.

It is noted, that SSCs identified on Table E-1 do not appear on Table E-2.E-1 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Table E-1. Summary of Inaccessible Equipment Reason for Action Resolution/

Milestone Component ID Description Inaccessibility Request Status Completion

_______ _______ ID (IR)_ _ _ _ _ _EQ 480V ESF SUBSTATION Equipment B2R17 2AP10E BUS 231X ASMBLY energized 1425197 Spring 2013 ASSY -4160V ESF SWGR Equipment B2R17 2AP05E 241 energized 1425197 Spring 2013 PZR PORV (C/S AT 2PM05J) Located in B2R17 2RY455A ASMBLY containment 1425387 Spring 2013 REACTOR TRIP Equipment B2R17 2RD05E SWITCHGEAR energized 1425381 Spring 2013 PRESSURIZER PORV Located in B2R17 2RY32MA ACCUM 2A containment 1425387 Spring 2013 PRESSURIZER PORV Located in B2R17 2RY32MB ACCUM 2B containment 1425387 Spring 2013 S/G LOOP 2A LEVEL D/P Located in B2R17 2LT-0517 XMTTR W/FILLED LEG containment 1425387 Spring 2013 RC WIDE RANGE LP 2A Located in B2R17 2TE-RC022A TEMP containment 1425387 Spring 2013 RC WIDE RANGE LP 2B Located in B2R17 2TE-RC023A TEMP containment 1425387 Spring 2013 RC LOOP 2C TO RH PMP 2B Located in B2R17 2RH8702A SUCT ISOL VLV ASMBLY containment 1425387 Spring 2013 CNMT ESS'L SERVICE Located in B2R17 2VP01AA WATER COIL 2A (RCFC) containment 1425387 Spring 2013 PRZR LEVEL D/P Located in B2R17 2LT-0459 TRANSMITTER containment 1425387 Spring 2013 S/G LOOP 2B LEVEL D/P TRANSMITTER W/FILLED Located in B2R17 2LT-0527 LEG containment 1425387 Spring 2013 U2 PRESSURIZER PRESS Located in B2R17 2PT-0455 CHANNEL 455 containment 1425387 Spring 2013 PRZR PRESSURE Located in B2R17 2PT-0457 TRANSMITTER containment 1425387 Spring 2013 REFUELING WTR PURIF PMP SUCT FROM U-2 Located in B2R17 2FC009 REFUEL CAV CNMT ISOL containment 1425387 Spring 2013 SPENT FUEL PIT FLT DEMIN LOOP RTRN TO U-2 Located in B2R17 2FC012 REFUEL CAV CNMT ISOL containment 1425387 1 Spring 2013 E-2 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Table E-2. Deferred Internal Cabinet Inspection COMPONENT EQUIPMENT ACCESSIBLE IF NOT ACCESSIBLE, MILESTONE TRACKING STATUS I ID DESCRIPTION CLASS (Y/N) WHY? COMPLETION NMR No) PESTS OIR No.) RESULTS 2AP25E ASSY -480V AUX (01) Motor YES Spring 2013 1425394 BLDG ESF MCC Control Centers 231X2 2AP27E ASSY -480V AUX (01) Motor YES Spring 2013 1425394 BLDG ESF MCC Control Centers 232X2 2AP38E ASSY -480V AUX (01) Motor YES Spring 2013 1425394 BLDG MCC 233X1 Control Centers 2AP92E ASSY -480V SXCT (01) Motor YES Spring 2013 1425394 MCC 232Z1, SOUTH Control Centers ELEC RM 2AP93E ASSY- MCC 231Z1 (01) Motor YES Spring 2013 1425394 ESW COOLING Control Centers TOWER 2AP98E 480V ESF SXCT (01) Motor YES Spring 2013 1425394 UNIT SUBSTA 232Z, Control Centers SOUTH ELEC RM 2AP11E 480V ESF UNIT (04) YES B2R17 1425197 SUBSTA 231X XFMR Transformers Refueling Outage Bus 241 Outaae 2AP13E EQ UNIT (04) NO See Note 1 below. N/A SUBSTATION 232X Transformers TRAN 480V ESF 21P02E INSTRUMENT BUS (04) NO See Note 1 below. N/A 212 TRANSFORMER Transformers DIV. 22 2DC06EA 125V DC ESF DIST (14) Distribution YES CANNOT REMOVE Spring 2013 1425395 PNL 212 Panels SUB PANELS WOULD NEED DC OUTAGE Table E-2 Page 1 of 6 E-3 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 ITRACKI NG STATUS I COMPONENT EQUIPMENT ACCESSIBLE IF NOT ACCESSIBLE, MILESTONE TRACKINSTATUION ID CLASS (Y/N) WHY? COMPLETION (MR No) PESTS OIR No.) RESULTS 2DC10J 125V DC FUSE (14) Distribution YES Rear Panel is not Spring 2013 1425395 PANEL -DIV. 21 Panels removable 2DC03E BATTERY CHARGER (16) Battery YES From Front only rear Spring 2013 1425395 211 DIV. 21 Chargers and panel bolted on, Inverters requires extensive disassembly, 2DC04E BATTERY CHARGER (16) Battery YES From Front only rear Spring 2013 1425395 212 DIV. 22 Chargers and panel bolted on, Inverters requires extensive disassembly.

21P05E INSTRUMENT BUS (16) Battery YES From Front only rear Spring 2013 1425395 211 INVERTER -DIV. Chargers and panel bolted on, 21 Inverters requires extensive disassembly.

21P06E INSTRUMENT BUS (16) Battery YES From Front only rear Spring 2013 1425395 212 INVERTER -DIV. Chargers and panel bolted on, 22 Inverters requires extensive disassembly.

OSX02JA OA SX M/U PP OA (20) YES Spring 2013 1425395 Control Cabinet Instrumentation and Control Panels and__________

_______________Cabinets

_ _ _ _ _ _OVC01JB CONTROL ROOM (20) YES Spring 2013 1425395 HVAC SYST LOCAL Instrumentation CONT PANEL and Control ASMBLY Panels and Cabinets 2PA01J CAB PROC I+C (20) YES Spring 2013 1425395 RACK PROT CH 1 0- Instrumentation 3373B AB2 and Control Panels and____ ___ ____ ___ ___ ____ ___ ___ Cabinets__

_ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _Table E-2 Page 2 of 6 E-4 12Qo108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 COMPONENT EQUIPMENT ACCESSIBLE IF NOT ACCESSIBLE, MILESTONE TRACKING STATUS /DESRIPIONNUMBER INSPECTION ID CLASS (Y/N) WHY? COMPLETION (MR No SPESTS (IR No.) RESULTS 2PA02J CAB PROC I+C (20) YES Spring 2013 1425395 RACK PROT CH 2 0- Instrumentation 3373B AB2 and Control Panels and Cabinets 2PA03J CAB PROC I+C (20) YES Spring 2013 1425395 RACK PROT CH 3 0- Instrumentation 3373B AB2 and Control Panels and Cabinet_2PA04J CAB PROC I+C (20) YES Spring 2013 1425395 RACK PROT CH 4 0- Instrumentation 3373B AB2 and Control Panels and_ Cabinets 2PA06J CAB PROC I+C (20) YES Spring 2013 1425395 RACK CONT GRP 2 0- Instrumentation 3373B AB2 and Control Panels and Cabinets 2PA07J CAB PROC I+C (20) YES Spring 2013 1425395 RACK CONT GRP 3 0- Instrumentation 3373B AB2 and Control Panels and Cabinets__

2PA08J CAB PROC I+C (20) YES Spring 2013 1425395 RACK CONT GRP 4 0- Instrumentation 3373B AB2 and Control Panels and___ ___ ___ _ _ ___ ___ ___ ___ __Cabinets

_ _ _ _ _ _ _ _ _ _2PA09J CAB PROT SYST (20) YES Spring 2013 1425395 SOL ST RX/ESF TRN Instrumentation A 0-3373B AB2 and Control Panels and_Cabinets I Table E-2 Page 3 of 6 E-5 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 COMPONENT I EQUIPMENT ACCESSIBLE IF NOT ACCESSIBLE, MILESTONE TRACKING STATUS /ID CLASS (Y/N) WHY? COMPLETION NMR No) PESTS (I R No.) RESULTS 2PA10J CAB PROT SYST (20) YES Spring 2013 1425395 SOL ST RX/ESF TRN Instrumentation B 0-3373B AB2 and Control Panels and_ Cabinets _2PA11J CAB TEST (20) YES Spring 2013 1425395 SAFEGUARD TRN A Instrumentation 0-3373B AB3 and Control Panels and Cabinets 2PA12J CAB TEST (20) YES Spring 2013 1425395 SAFEGUARD TRN B Instrumentation 0-3373B AB2 and Control Panels and__abinets 2PA13J CAB ESF SEQ/ACT (20) YES Spring 2013 1425395 TRN A 0-3373B AB2 Instrumentation and Control Panels and Cabinets 2PA14J CAB ESF SEQ/ACT (20) YES Spring 2013 1425395 TRN B 0-3373B AB2 Instrumentation and Control Panels and Cabinets 2PA27J CAB RELAY AUX (20) YES Spring 2013 1425395 SAFEGUARD TRN A Instrumentation 0-3373B AB2 and Control Panels and Cabinets 2PA28J CAB RELAY AUX (20) YES Spring 2013 1425395 SAFEGUARD TRN B Instrumentation 0-3373B AB2 and Control Panels and_Cabinets I I I Table E-2 Page 4 of 6 E-6 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 TRACKING STATUS /COMPONENT DESCRIPTION EQUIPMENT ACCESSIBLE IF NOT ACCESSIBLE, MILESTONE NUMBER INSPECTION ID CLASS (Y/N) WHY? COMPLETION NMR No SPESTS OIR No.) RESULTS 2PA33J CAB CONT SYSTEM (20) YES Spring 2013 1425395 ESF 21 0-3373B AB2 Instrumentation and Control Panels and Cabinets 2PA34J CAB CONT SYSTEM (20) YES Spring 2013 1425395 ESF 22 0-3373B AB2 Instrumentation and Control Panels and Cabinets 2PA51J CAB HJTC RX (20) YES Spring 2013 1425395 VESSEL LEVEL CH A Instrumentation 0-3373B AB2 and Control Panels and Cabinets 2PA52J CAB HJTC RX (20) YES Spring 2013 1425395 VESSEL LEVEL CH B Instrumentation 0-3373B AB2 and Control Panels and_ Cabinets 2PL07J 1A DG 1DG01KA (20) YES Spring 2013 1425395 CONTROL PANEL Instrumentation and Control Panels and Cabinets 2PL08J 1B DG 1DG01KB (20) YES Spring 2013 1425395 CONTROL PANEL Instrumentation and Control Panels and Cabinets 2PM05J MAIN CONTROL (20)BOARD Instrumentation NO OTHER and Control ADVERSE Panels and SEISMIC_ _Cabinets YES N/A 8/6/2012 N/A CONDITIONS Table E-2 Page 5 of 6 E-7 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 COMPONENT DESCRIPTION EQUIPMENT ACCESSIBLE IF NOT ACCESSIBLE, MILESTONE TRACKING STATUS /ID CLASS (Y/N) WHY? COMPLETION No.) RESTS OIR No.) RESULTS 2PM06J MAIN CONTROL (20)BOARD Instrumentation NO OTHER and Control ADVERSE Panels and SEISMIC Cabinets YES N/A 8/6/2012 N/A CONDITIONS 2PM07J MAIN CONTROL (20)BOARD Instrumentation NO OTHER and Control ADVERSE Panels and SEISMIC Cabinets YES N/A 8/6/2012 N/A CONDITIONS 2PM11J MAIN CONTROL (20)BOARD Instrumentation NO OTHER and Control ADVERSE Panels and SEISMIC I Cabinets YES N/A 8/6/2012 N/A CONDITIONS Note 1 -Unit Sub-Station Transformer panel anchorages are external welds, and Instrument Power CVTs are externally bolted to the floor.As such only an external inspection was performed during the Seismic Walk Down. For each component type internal inspection requires removal of bolted covers. The transformers do not have hinged doors or panel covers with handles, latches or thumb screws that provide access to view the internal assembly.

Extensive disassembly is required to perform an internal inspection.

After reviewing the FAQ 4.20 Rev. 2 dated September 25, 2012 on this question Byron will not perform internal inspection of Unit Sub-Station Transformers or Instrument Power CVTs.Table E-2 Page 6 of 6 E-8 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 F Peer Review Report This appendix includes the Peer Review Team's report, including the signed Peer Review Checklist for SWEL from Appendix F of the EPRI guidance document. (Ref. 1)F-1 12Q-108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Peer Review Report For Near Term Task Force (NTTF) Recommendation 2.3 Seismic Walkdown Inspection of Byron Nuclear Station Unit 2 October 15, 2012 Prepared by Peer Reviewers Walter Diordievic (Team Leader)Todd A. Bacon Tribhawan K. Ram Walter Djordjevic

ýb/ 10/15/2012 Peer Review Team Leader Certification Signature Date F-2 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 14 I Introduction This report documents the independent peer review for the Near Term Task Force (NTTF)Recommendation 2.3 Seismic Walkdowns performed by Stevenson

& Associates (S&A) for Unit 2 of Byron Nuclear Station (Byron). The peer review addresses the following activities: " Review of the selection of the structures, systems, and components, (SSCs) that are included in the Seismic Walkdown Equipment List (SWEL)" Observation of seismic walkdown on August 6, 2012 by Peer Review Team Leader, Mr.Walter Djordjevic" Review of a sample of the checklists prepared for the Seismic Walkdowns

& Walk-Bys" Review of any licensing basis evaluations" Review of the decisions for entering the potentially adverse conditions in to the plant's Corrective Action Plan (CAP)" Review of the final submittal report The peer reviewers for Byron, Unit 2, are Messrs. Walter Djordjevic, Todd A. Bacon, and Tribhawan K. Ram, all of S&A. Mr. Djordjevic is designated the Peer Review Team Leader and has participated in all aspects of the peer review. None of the aforementioned engineers is involved in the seismic walkdown.

inspection process so that they can maintain their independence from the project. Mr. Djordjevic is an advanced degree structural engineer, has over thirty years of nuclear seismic experience and has received Seismic Capability Engineer (EPRI SQUG training), EPRI IPEEE Add-on, Seismic Fragility and Seismic Walkdown Engineer (SWE) training.

Mr. Bacon is a civil-structural engineer with 25 years of nuclear engineering experience and received the Seismic Walkdown Engineer (SWE) training.Mr. Ram is an advanced degree nuclear engineer with over 25 years of nuclear power plant experience.

Mr. Djordjevic led the seismic peer review activities and Mr. Ram led the SWEL selection peer review. Mr. Djordjevic, as Peer Review Team Leader, has participated in all phases of the peer review process for Byron, Unit 2.The SWEL development was performed by Mr. Kim L. Hull of S&A. No findings were cited.The SWEL peer review process and observations by the peer reviewers are found in Section 2.The completed SWEL Peer Review Checklist is found in Attachment 2.The peer review of the seismic walkdown inspection started on August 6, 2012 with a peer review of the actual walkdowns for both Units 1 and 2. Mr. Djordjevic joined the walkdown team for a portion of the day's planned walkdowns to observe the conduct of walkdowns and adherence to the Seismic Walkdown Guidance (SWG)1.The SWE walkdown inspection team engineers were Mr. Philip A. Gazda and Ms. Marlene M. Delaney for both units. An interview was conducted by Messrs. W. Djordjevic and T. Bacon with the SWE inspection team on September 7, 2012 after review of a sample of the Unit 2 Seismic Walkdown Checklists (SWC)Seismic Walkdown Guidance For Resolution of Fukushima Near-Term Task Force Recommendation 2.3: Seismic, EPRI Report 1025286, June 2012.F-3 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 14 and Area Walk-By Checklists (AWCs) to ascertain the quality and procedural compliance with the SWG. The discussion of the sample SWCs and AWCs is provided in Section 3.No issues were identified which challenged the current licensing basis.F-4 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 14 2 Peer Review -Selection of SSCs 2.1 Purpose The purpose of this section is to describe the process that was used to perform the peer review of the selected structures, systems, and components, (SSCs) that were included in the Seismic Walkdown Equipment List (SWEL).This section documents the Peer Review -Selection of SSCs performed for Byron Unit 2 2.2 Peer Review Activity -Selection of SSCs The guidance in EPRI Technical Report 1025286, Seismic Walkdown Guidance for Resolution of Fukushima Near-Term Task Force Recommendation 2.3: Seismic, dated June 2012 {SWG}, Section 3: Selection of SSCs was used as the basis for this review.This peer review was based on reviews of the following documents:

1) UFSAR chapters 3, 5, 6, 7, 8, and 9 2) Success Path Equipment List (SPEL)3) P&ID M-63 for Spent Fuel Pool Cooling System This peer review was based on interviews with the following individual(s) who was (were)directly responsible for development of the SWEL: Mr. Kim L. Hull, Senior Mechanical Engineer This peer review utilized the checklist shown in the SWG, Appendix F: Checklist for Peer Review of SSC Selection.

For SWEL 1 development, the following actions were completed in the peer review process:* Verification that the SSCs selected represented a diverse sample of the equipment required to perform the following five safety functions:

o Reactor Reactivity Control (RRC)o Reactor Coolant Pressure Control (RCPC)o Reactor Coolant Inventory Control (RCIC)o Decay Heat Removal (DHR)o Containment Function (CF)This peer review determined that the SSCs selected for the seismic walkdowns represent a diverse sample of equipment required to perform the five safety functions.

This conclusion was based on a review of UFSAR chapters 3, 5, 6, 7, 8, and 9 which F-5 12Q-108.20-R-002 Rev. I Correspondence No.: RS-12-161 Sheet 5 of 14 determined that all five safety functions (RRC, RCPC, RCIC, DHR, and CF) are adequately represented.

Verification that the SSCs selected include an appropriate representation of items having the following sample selection attributes:

o Various types of systems o Major new and replacement equipment o Various types of equipment o Various environments o Equipment enhanced based on the findings of the IPEEE o Risk insight consideration This peer review determined that the SSCs selected for the seismic walkdowns include a sample of items that represent each attribute/consideration identified above. The justification for this conclusion is: a) Based on a review of UFSAR chapters referenced above and the SPEL list, it was determined that appropriate variety of equipment and systems are represented (e.g., EDG, Component Cooling, Aux Feed, Charging, Essential Service WTR, RHR, Batteries, Battery Chargers, Low and Med Vol Switchgear and MCCs); b) The "New or Replace" equipment are indicated as such; c) A variety of location environments are included:

e.g., MCCs (Auxiliary

@ EL: 346, and ESWCT @EL: 874), Pumps (Auxiliary

@ EL: 330, 346, 364, and 383), Tanks and Heat Exchangers (Auxiliary and Containment), Air Handlers (Auxiliary and Containment) and Valves (Auxiliary and Containment);

d) The IPEEE Enhancement related equipment is indicated as such; and e) The risk quantification has been included in the "Comments" column.Note: Because of accessibility reasons, some equipment has appropriately been deferred to component or refueling outage.For SWEL 2 development, the following actions were completed in the peer review process: " Verification that SFP related items were considered and appropriately added to SWEL 2.This peer review determined that spent fuel pool cooling system Seismic CAT 1 items were given appropriate consideration and included on the list. This determination is based on a review of the licensing and design basis documents including FSAR chapters 3 and 9 and SFP Cooling System P&ID M-63." Verification that appropriate justification was documented for spent fuel pool related items that were not added to the SWEL 2.This peer review determined that an appropriate level ofjustification was documented for those items related to the spent fuel pool that were not added to SWEL 2. The justification for not including any Seismic Category I Structure has appropriately been documented in the interim report. There are no rapid drain down related components in SWEL2. Appropriate justification for this item is included in the interim report as well.2.3 Peer Review Findings -Selection of SSCs This peer review found that the process for selecting SSCs that were added to the SWEL was consistent with the process outlined in the SWG Section 3: Selection of SSCs.F-6 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 6 of 14 The peer review checklist is attached to this document.This peer review resulted in no additional findings.2.4 Resolution of Peer Review Comments -Selection of SSCs All comments requiring resolution were incorporated prior to completion of this peer review.2.5 Conclusion of Peer Review -Selection of SSCs This peer review concludes that the process for selecting SSCs to be included on the seismic walkdown equipment list appropriately followed the process outlined in the SWG, Section 3: Selection of SSCs. It is further concluded that the SWEL sufficiently represents a broad population of plant Seismic Category 1 equipment and systems to meet the objectives of the NRC 50.54(f) Letter.F-7 12QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 7 of 14 31Review of Sample Checklists

& Area Walk-bys A peer review of the SWCs and AWCs was performed on September 7, 2012 after which an interview was conducted by Messrs. Djordjevic and Bacon with the SWE inspection team in accordance with the SWG requirements.

The SWE trained walkdown engineers were Mr. Philip A. Gazda and Ms. Marlene M. Delaney, both of whom are SQUG trained seismic capability engineers (EPRI 5-day training course) and Seismic Walkdown Engineer (SWE) trained.Table 3-1 lists the SWCs and AWCs samples which represent 15% of the SWC and 21% of the AWC. The sample includes the equipment inspected during the peer review and other equipment items from other classes to introduce diversity to the sampling procedure.

Table 3-1. Table of SWC andA WC Samples from Seismic Walkdown Inspection for Unit 2 Equipment Identification Equipment Walkdown Item SWE Noted Observations (GIP) Class I&C Rack 0-3373B Cove molding covers external 2PA07J 20 AB2 anchorage Spent Fuel Pit 2FC01A 21 Heat Exchanger No concerns 480V Aux Bldg ESF 2AP25E 1 MCC 231X2 no concerns Pump 2A ESW 2SX01PA 5 Assembly no concerns Interior panels do not allow for Main Control visual verification.

Ceiling tiles 2PM05J 20 Board adjudged acceptable Interior panels do not allow for Main Control visual verification.

Ceiling tiles 2PM06J 20 Board adjudged acceptable Interior panels do not allow for Main Control visual verification.

Ceiling tiles 2PM07J 20 Board adjudged acceptable Interior panels do not allow for Main Control visual verification.

Ceiling tiles 2PM11J 20 Board adjudged acceptable DC Distribution Panels not bolted together-2DC05E 15 Panel not an issue.Div I MEER 2VE04C 9 Exhaust Fan No concerns 125V DC Fuse 2DC1OJ 14 Panel -Div 21 No concerns F-8 12QO108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 8 of 14 Battery Charger 211 Div 21 2DC03E 16 AF to SG 2A Flow Transmitter 18 lo concerns Deep Well Valve to OA SXCT LCV 7 No concerns OSX007 8 0 CC Heat No concerns -handwheel Exchanger Outlet proximity potential interaction Valve deemed acceptable I&C Rack 0-3373B Cove molding covers external AB2 anchorage 2PA03J 20 ESF SEQ/ACT Train A 0-33738 A82 Cabinet 2PA13J 20 iorage CC Heat Exchanger Inlet Valve 2SX005 8 io concerns CC Heat Exchanger 2 Inlet Valve 8 ions Description Ceiling diffusers adjudged acceptable based on existing calculation Control Room assessment Roof drain and vertical uncovered cable tray identified and neither MEER Room deemed a seismic interaction or collapse concern Battery Room 212 No concerns MEER Room Div. 2 IR issued for overhead louvers in disrepair (not a seismic issue)2A RH Pump Room No concerns A SX Pump Room Scaffold parts stored in safe area so not a seismic hazard Outside HX & Spent Fuel Pump Room No concerns MSIV 2A/2D El 377 ft No concerns F-9 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 9 of 14 There were no findings that remotely challenged the licensing basis. The plant was found to have just a few minor housekeeping (and not particularly seismic housekeeping) and maintenance (concerning loose screws and fasteners) issues. Tables 5-2 and 5-3 of the Seismic Walkdown Report (final submittal report) provide the lists of the issues encountered for the equipment seismic walkdowns and area walk-bys.The scaffolding and seismic housekeeping procedures were reviewed by the SWEs in order to gain a full understanding of the plant practices in regard to those procedures.

There were no seismic concerns noted in Unit 2 with regard to scaffold erection or-seismic housekeeping.

The very few instances of loose screws and fasteners are seen as simple general maintenance issues and were of no concern from the seismic performance viewpoint.

There were instances of partially open s-hooks on light fixtures but those instances were isolated and not "clustered" around a single fixture. As such, they were not adjudged as immediate seismic interaction hazards to the equipment in their general proximity.

The instances where they were found were documented and action requests (IR) were written (see Table 5-2 and 5-3 in submittal report). In addition, a general action request was written (IR# 1399405) to inspect for and close s-hooks wherever they are located in the plant. In conclusion, procedural compliance is excellent at this plant.Finally, electrical panels at Byron 2 are generally intermittently (stitch) welded to an embedded plate in the concrete floor. As indicated in Table 3-1 (see 2PA07J) the stitch welding is generally not visible as it is covered with cove molding. This is the situation throughout the auxiliary electric equipment room. The welding is evident by virtue of the raised profile projected through the plastic molding. The SWE inspectors were able to visually observe the welding in a few locations where the molding had been removed or was missing. They concluded that the welding indicated on the installation drawings is accurate and accepted the drawings as correct. The affected panels are: 2PAO1J -2PA14J, 2PA27J, 2PA28J, 2PA33J, 2PA34J, 2PA51J, and 2PA52J. The peer reviewers concur with their conclusions.

F-1 0 12Q0108.20-R-002 Rev. I Correspondence No.: RS-12-161 Sheet 10 of 14 4 Review of Licensing Basis Evaluations Tables 5-2 and 5-3 provide a list of the issues encountered during the Unit 2 seismic walkdown inspections for the SWEL components and how they were addressed.

If a Byron IR request was generated it is shown in the Tables. An interview was conducted by Messrs. Djordjevic and Bacon with the SWE inspection team on September 7, 2012 to discuss the issues identified.

No potentially adverse seismic conditions were identified that resulted in a seismic licensing basis evaluation and the peer reviewers concur with this outcome.F-11 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 11 of 14 5 Review Final Submittal Report & Sign-off The final submittal report has been reviewed by Messrs. W. Djordjevic, T. A. Bacon and T. K.Ram and found to meet the requirements of the EPRI 1025286 -Seismic Walkdown Guidance (SWG).F-1 2 12Qo108.20-R-002 Rev. I Correspondence No.: RS-12-161 Sheet 12 of 14 Attachment 1: Peer Review Checklist for SWEL Byron Unit 2 Peer Review Checklist for SWEL Instructions for Completing Checklist This peer review checklist may be used to document the review of the Seismic Walkdown Equipment List (SWEL) in accordance with Section 6. The space below each question in this checklist should be used to describe any findings identified during the peer review process and how the SWEL may have changed to address those findings.

Additional space is provided at the end of this checklist for documenting other comments.1. Were the five safety functions adequately represented in the SWEL 1 selection?

YN NEI Appropriate equipment has been included to maintain the five safety functions:

RPC, DHR, RCIC, RCPC, and CF 2. Does SWEL 1 include an appropriate representation of items having the following sample selection attributes:

a. Various types of systems? Y[R NEI Various system types (e.g., EDG, Component Cooling, Aux Feed, Charging, Essential Service WTR, RHR, Batteries, Battery Chargers, Low and Med Vol Switchgear and MCCs) have been included.b. Major new and replacement equipment?

YZ NEI"New or Replace" equipment is included in the list.c. Various types of equipment?

YZ NEI The equipment represents all required 21 types except 12 and 13. The screenings

1. 1, #2, and #3 resulted in no equipment in the latter two categories.

d. Various environments?

YN NO Appropriate environments (e. g., Auxiliary and Containment buildings) have been included.F-1 3 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 13 of 14 Byron Unit 2 Peer Review Checklist for SWEL e. Equipment enhanced based on the findings of the IPEEE (or equivalent)

YZ NEI program?Included as indicated in the column, "IPEEE Enhancement." f. Were risk insights considered in the development of SWEL 1? YI NEI Risk qualtifications (F-V and RAW) provided in the "Comments" column 3. For SWEL 2: a. Were spent fuel pool related items considered, and if applicable included in YE NEI SWEL 2?Spent fuel pool cooling system Seismic CAT 1 items were given appropriate consideration and included on, the list.b. Was an appropriate justification documented for spent fuel pool related items YZ NEI not included in SWEL 2?There are no rapid drain down related components in SWEL2. Appropriate justification for this item is included in the Interim Report. Justification has also been provided for not including Seismic I structures such as SFP sluice/transfer gates.4. Provide any other comments related to the peer review of the SWELs.None 5. Have all peer review comments been adequately addressed in the final SWEL? Y[ NEI F-14 1-2Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Sheet 14 of 14 Peer Reviewer#1: Peer Reviewer#2: 71-K TK Ram Date: 8121/12 TK Ram 414r Walter Diordievic Date: 9/1/12 F-1 5 12-0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 G IPEEE Vulnerability Status Table G-1 lists the plant improvements, the IPEEE/SQUG proposed resolution, the actual resolution and resolution date.G-1 12-0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Table G-1. IPEEE Vulnerability Status Description of Condition IPEEE Report Resolution Equipment ID Vulnerability*

Proposed Resolution Actual Resolution of Condition Date of Condition**

2FT-AFO 11 Flow transmitters adjacent to N/A Tank has been shown to maintain its 12/23/1996****

2FT-AF012 Recycle Monitor tanks integrity well beyond RLE demand level 2FT-AF013 (1&2AB02T) which are by CDFM capacity.2FT-AF014 unanchored; thus they pose 2FT-AF015 a potential flooding hazard to 2FT-AF016 the transmitters on the 2FT-AF017 adjacent nearby instrument 2FT-AF018 rack.Flow Transmitters 1AP21E Seismic interaction concern. N/A Trash barrel removed. 12/23/1996****

Motor Control Adjacent trash barrel Center (unanchored) may impact MCC -during seismic event.1CV112E Operator is in contact with Evaluate clearance Evaluations have determined that the 8/26/1998 2CV112E adjacent pipe/grating which requirements and affected piping systems and valve are Valves poses an impact hazard. effect on valve and adequate with the reduced clearance.

pipe system Also, for 2CV1 12E the grating has been modified.6/11/1997 OCC01 E Seismic interaction concerns N/A Flammable cabinet removed from 12/23/1996****

Switchgear with an adjacent flammables immediate area and railings restrained storage cabinet and to preclude potential impact.personnel safety railing lay-down (storage) area.Table G-1 Page 1 of 7 G-2 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Description of Condition

/ IPEEE Report Resolution Equipment ID Vulnerability*

Proposed Resolution Date of Condition**

Actual Resolution of Condition 1 CV8152 Associated limit switch in N/A Grating has been modified.

6/11/1997 Valve direct contact with adjacent platform grating. Remainder of valve only has 1/8 inches of clearing.1AP25E Seismic interaction concern. N/A Interactions were be evaluated on a 4/22/2004 2AP25E Not tied (bolted) to adjacent case-by-case basis. Bolted adjacent Motor Control MCC 1(2)AP44E and may MCCs together as required.Centers impact MCC during seismic event.1AP27E Seismic interaction concern. N/A Interaction were be evaluated on a 4/22/2004 2AP27E Not tied (bolted) to adjacent case-by-case basis. Bolted adjacent Motor Control MCC 1(2)AP47E and may MCCs together as required.Centers impact MCC during seismic event.lAPi 1 E "Shipping" bolts securing Bolts will be tightened Bolts tightened during B1 R08 Work Done in 1AP13E internal coils to frame are not during Refueling B1R08 Transformers tight (approximate 1/4-1/2" Outage B1 R08 gap as nut is backed-off) lAP10E Seismic interaction concern. Breakers will be Seismic interaction issues were 10/15/1997 2AP06E Adjacent, unanchored spare located in designated addressed.

2AP1 OE breaker(s) poses an area where no 2AP12E interaction hazard. interaction hazard Switchgear exists.2AP32E Seismic interaction concern. N/A Item has been relocated so as not to 12/23/1996****

Motor Control Adjacent, unanchored wash pose an interaction risk Centers station poses an interaction hazard.Table G-1 Page 2 of 7 G-3 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Description of Condition

/ IPEEE Report Equipment ID Vulnerability*

Proposed Resolution Resolution of Condition**

Actual Resolution of Condition Date 1AP32E Heat trace control cabinet Heat trace cabinet has Heat trace cabinet 1HT04J has been 01/10/2001 Motor Control located in vicinity of MCC been welded to walked down and verified to be bolted to Centers was found to be unanchored.

foundation pad. steel which is welded to the foundation pad and therefore will not fall and/or make contact with MCC-1 32X5. Also, drawing 6E-0-3391 F confirms 1/8" thick 1.5" long @ 12" welds which meets the configuration.

1 DC01 E 1) Overhead lights hung N/A 1) S-hooks have been closed. 12/23/1996****

Station on chains with open S-Batteries hooks. 2) 2 Batteries are within 1/4" gap criteria specified on vendor drawing.2) Gaps exist between batteries and end support members.1(2)DC03E Adjacent cabinets not bolted Interaction will be Evaluation has determined that 10/10/2001 I(2)DC05E together.

evaluated on a case- consequences of relay chatter can be Battery by-case basis. Bolt resolved by operator action. See NTS Charger & adjacent cabinets response.Distribution together as required.Center Bus 1 IP05E Interaction (impact) concern Duct box will be Duct box was secured to fan cabinet Work done in 1IP07E with adjacent filter duct box secured as part of during B1R08. B1 R08 lIP06E which is unsecured, pending modification 1IP08E scheduled for refueling Inverters outage B1 R08.1 DC02E Gaps exist between batteries N/A Batteries are within W" gap criteria 12/23/1996****

Station and end support members. specified on vendor drawing.Batteries Table G-1 Page 3 of 7 G-4 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Description of Condition/

IPEEE Report Resolution Vulnerability*

of Condition**

Actual Resolution of Condition Date 1(2)DC04E Adjacent cabinets not bolted Interaction will be Evaluation has determined that 10/10/2001 1(2)DC06E together.

evaluated on a case- consequences of relay chatter can be Battery by-case basis. Bolt resolved by operator action. See NTS Charger & adjacent cabinets response.Distribution together as required.Center Bus 1 RD05E Seismic interaction concern. Interaction will be Evaluation has determined that 10/10/2001 2RD05E Not tied (bolted) to adjacent evaluated on a case- consequences of relay chatter can be Reactor Trip 1(2)RD03E.

May impact by-case basis. Bolt resolved by operator action. See NTS Switchgear during seismic event adjacent cabinets response.together as required.1(2)AP92E 1 )Overhead lights hung on 1) S-hooks have been 1) S-hooks have been closed. 4/22/2004 1(2)AP93E chains with open S-hooks. closed. 2) Modification to connect cabinets Motor Control 2)Not tied (bolted) to 2) Interaction will be together was approved by TRC/BRC.Centers adjacent MCC. evaluated on a case- Breakers were relocated in designated by-case basis. Bolt areas where no interaction hazard adjacent MCCs exists.together as required.Table G-1 Page 4 of 7 G-5 12Q0108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Description of Condition IPEEE Report Resolution Equipment ID Vulnerability*

Proposed Resolution Actual Resolution of Condition Date of Condition**

OPM01J 1) Unsecured aluminum 1) Diffusers will be 1) Analysis was performed which 6/16/2003 OPM02J diffusers in suspended secured to support evaluated the MRC Eggcrate panels 1PM01J ceiling pose a personnel grid. (ceiling diffusers) capability for 1 PM04J hazard to operators if they 2) Several items have withstanding a seismic event of a 1 PM05J are dislodged due to seismic been removed from magnitude required by the IPEEE 1 PM06J motion. control room. Other without an adverse effect. Conclusively 1 PM07J 2) Interaction concerns with items will be removed the MRC ceiling diffusers are capable of 1IPM11J items in control room in or relocated as withstanding a seismic event of a lPM12J proximity of cabinets such as required.

magnitude required by IPEEE without 2PM01J lockers, copiers, tables and adverse effect.2PM04J filing cabinets.2PM05J 2PM06J 2PM07J 2PM11J 2PM12J Main Control Panels Table G-1 Page 5 of 7 G-6 1200108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Description of Condition

/ IPEEE Report Resolution Equipment ID Vulnerability*

Proposed Resolution Date of Condition**

Actual Resolution of Condition 1(2)PA01J

1) Adjacent cabinets not 1) Interaction will be 1) Interactions were evaluated that 1/21/2000 1(2)PA02J bolted together.

evaluated on a case- addressed the loads for panels and 1(2)PA03J

2) Also have instrument cart by-case basis. Bolt concluded that they were acceptable 1(2)PA04J (or wooden table) in adjacent cabinets when linked together.

Vendor (S&A)1(2)PA06J proximity of cabinet, together as required.

walkdown confirmed these cabinets to 1(2)PA07J

2) IM equipment to be be linked together.1(2)PA08J stored/secured away 2) IM equipment was stored away from 1(2)PA09J from cabinets when cabinets when not in use.1(2)PA10J not in use.1(2)PA1 UJ 1 (2)PA1 2J 1 (2)PA1 3J 1 (2)PA1 4J 1 (2)PA27J 1 (2)PA28J 1 (2)PA33J 1 (2)PA34J 1 (2) PA51 J 1(2)PA01J 1 PA52J Auxiliary Panels 21P06E Interaction (impact) concern N/A Fire extinguisher brackets secured.21P08E with adjacent fire Inverters extinguisher (A-8-27) which has an open (unsecured) retaining bracket.Table G-1 Page 6 of 7 G-7 12Q-108.20-R-002 Rev. 1 Correspondence No.: RS-12-161 Description of Condition

/ IPEEE Report Resolution Equipment ID Vulnerability*

ProposedActual Resolution of Condition Date of Condition**

1(2)AP98E Overhead lights hung on N/A S-hooks have been closed 12/23/1996****

1(2)AP99E chains with open S-hooks._Switchgear 2AP98E One "shipping" bolt securing Bolts will be tightened Bolts were tightened during B2R07. Work done in internal coils to frame is not during B2R07. B2R07 tight (approximate 11/4" gap as nut is backed-off)

• IPEEE "Vulnerability" = Vulnerability, Outlier, Anomaly, Enhancement, Finding, etc.** If this is different than the original planned, else N/A.***Field walkdown performed and confirmed bracket was acceptable.

• • • • Per Letter BY: 96-0323, "Transmittal of Byron Station Individual Plant Examination of External Events Submittal Report" dated December 23, 1996.Table G-1 Page 7 of 7 G-8