RS-12-161, Byron Generating Station, Unit 1, 12Q0108.20-R-001, Rev. 1, Appendix C, Seismic Walkdown Checklist (Swc). Part 1 of 3

Byron Generating Station, Unit 1, 12Q0108.20-R-001, Rev. 1, Appendix C, Seismic Walkdown Checklist (Swc). Part 1 of 3

ML12341A163
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-001, Rev 1
Download: ML12341A163 (136)

Text

Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: OVC15J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

MCR U-1 HVAC START PNL Project: Byron 1 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.Anchorane 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-56 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: OVC15J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

MCR U-1 HVAC START PNL 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 Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-57 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: OVC15J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

MCR U-1 HVAC START PNL Photos C-58 Byron Generating Station Unit I 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: OWO01CB Equipment Class: (11) Chillers Equipment

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Description:==

0B MCR CHLR Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 383.00 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-1214 Sheet 3 Revision W Indication of cracks in grout pad. Anchor embedded in concrete so cracks are cosmetic.

Not a structural/seismic issue. IR 1402735 written 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-59 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: OWO01CB Equipment Class: (11) Chillers Equipment

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Description:==

OB MCR CHLR 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/(4dý _ _Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-60 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: OWO01CB Equipment Class: (11) Chillers Equipment

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Description:==

0B MCR CHLR Photos OWO01CB Byron 1 & 2 8-20-12 079 C-61 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: OWWO19A Equipment Class: (7) Fluid-Operated Valves Equipment

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Description:==

ASSY -AOV OB DEEP WELL PP OWW01PB TO 0A SXCT LCV Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

ESWCT, 874.00 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-62 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: OWWO19A Equipment Class: (7) Fluid-Operated Valves Equipment

==

Description:==

ASSY -AOV 08 DEEP WELL PP OWW01PB TO OA SXCT LCV 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?

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 C-63 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: OWW019A Equipment Class: (7) Fluid-Operated Valves Equipment

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Description:==

ASSY -AOV 0B DEEP WELL PP OWW0113PB TO OA SXCT LCV Photos C-64 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF005E Equipment Class: (7) Fluid-Operated Valves Equipment

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Description:==

S/G 1A FLOW CONT VLV ASMBLY; 4" Project: Byron 1 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-65 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF005E Equipment Class: (7) Fluid-Operated Valves Equipment

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Description:==

S/G 1A FLOW CONT VLV ASMBLY; 4" Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Clearance between Valve 1AFOO5E diaphragm enclosure and adjacent Valve IAFOO5G is relatively large and not an issue (-3/4" horizontal and 1 1/2" vertical).

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-66 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF005E Equipment Class: (7) Fluid-Operated Valves Equipment

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Description:==

S/G 1A FLOW CONT VLV ASMBLY; 4" Photos C-67 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: IAF005E Equipment Class: (7) Fluid-Operated Valves Equipment

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Description:==

S/G 1A FLOW CONT VLV ASMBLY; 4" C-68 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF006B Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

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Description:==

AUXILIARY FEEDWATER PMP 1B SX SUCT VLV ASMBLY; 6" Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 383.00 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-69 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF006B Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

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Description:==

AUXILIARY FEEDWATER PMP 1B SX SUCT VLV ASMBLY; 6" 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?

No structural/seismic issues Comments Seismic walkdown team 8/20/12 am M. Delaney & P. Gazda Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-70 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. I Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF006B Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

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Description:==

AUXILIARY FEEDWATER PMP 11B SX SUCT VLV ASMBLY; 6" Photos 1A-UOU tsl yron 1 & z ts-zu-iz uzi C-71 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF017B Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

==

Description:==

AUXILIARY FEEDWATER PMP 1B SX SUCT VLV ASMBLY; 6" Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 383.00 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?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-72 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF017B Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

==

Description:==

AUXILIARY FEEDWATER PMP lB SX SUCT VLVASMBLY; 6" 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?

No structura//seismic issues Comments Seismic walkdown team 8/20/12 am M Delaney & P Gazda Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-73 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF017B Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

==

Description:==

AUXILIARY FEEDWATER PMP 1B SX SUCT VLV ASMBLY; 6" Photos 1At-I 1bI byron 1 & z ts-zu-iz uz4 C-74 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet I of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF01EA-1 Equipment Class: (16) Battery Chargers and Inverters Equipment

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Description:==

AF PUMP 1B BATTERY CHARGER Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 383.00 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% 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-75 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AFOlEA-1 Equipment Class: (16) Battery Chargers and Inverters Equipment

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Description:==

AF PUMP 1B BATTERY CHARGER 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?

No structural/seismic issues 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 C-76 Byron Generating Station Unit 1 12Q0108.20-R-001 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:==

1AFOlEA-1 (16) Battery Chargers and Inverters AF PUMP 1B BATTERY CHARGER WA-Ul LA-1 byron 1 & z a5-zu-i zu2z C-77 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF01EB-A Equipment Class: (15) Batteries on Racks Equipment

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Description:==

AF BATTERY Bank B BATT A AUXILIARY FEEDWATER PUMP 1B Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 383.00 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-0-3391H Revision AH Note that the drawing specifies 2 details and the anchorage is per Detail 150 and Section A-A (8 bolt detail)6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-78 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: [T] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF01EB-A Equipment Class: (15) Batteries on Racks Equipment

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Description:==

AF BATTERY Bank B BATT A AUXILIARY FEEDWATER PUMP 1B 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 8/20/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-79 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF01EB-A Equipment Class: (15) Batteries on Racks Equipment

==

Description:==

AF BATTERY Bank B BATT A AUXILIARY FEEDWATER PUMP 11B Photos C-80 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF01PB Equipment Class: (5) Horizontal Pumps Equipment

==

Description:==

DIESEL DRIVEN AUX FEED PUMP 1BASMBLY Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 383.00 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-1221 Sheet 2 Revision AD 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-81 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF01PB Equipment Class: (5) Horizontal Pumps Equipment

==

Description:==

DIESEL DRIVEN AUX FEED PUMP 16_ASMBLY Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Yes Sight glass is well-supported and protected 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 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-82 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: IAF01PB Equipment Class: (5) Horizontal Pumps Equipment

==

Description:==

DIESEL DRIVEN AUX FEED PUMP 1B_ASMBLY Photos 035 036 C-83 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF01PB Equipment Class: (5) Horizontal Pumps Equipment

==

Description:==

DIESEL DRIVEN AUX FEED PUMP 1B_ASMBLY C-84 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-1 2-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF024 Equipment Class: (7) Fluid-Operated Valves Equipment

==

Description:==

AF PP SX RECIRC VLV_ASMBLY; 3" Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 383.00 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?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-85 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No..: 1AF024 Equipment Class: (7) Fluid-Operated Valves Equipment

==

Description:==

AF PP SX RECIRC VLV_ASMBLY; 3" 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?

No structural/seismic issues 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 C-86 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M-I N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AF024 Equipment Class: (7) Fluid-Operated Valves Equipment

==

Description:==

AF PP SX RECIRC VLV_ASMBLY; 3" Photos!AF024 Byron 1 & 2 8-20-12 034 C-87 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 9 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP06E Equipment Class: (3) Medium Voltage Switchgear Equipment

==

Description:==

4160 VOLT ESF SWITCH BUS 142 Project: Byron I SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 426.00 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 Minor shrinkage cracking in floor judged to be acceptable.

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.)

Anchorage shown on drawing 6E-0-3391C, Rev. BE.C-88 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 9 Status: j N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP06E Equipment Class: (3) Medium Voltage Switchgear Equipment

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Description:==

4160 VOLT ESF SWITCH BUS 142 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

19 total cubicles.

All front doors were opened. All front anchorages were observed.All lower back panels were opened except for 5 cubicles due to electrical limitations.

All back anchorages for the 14 opened cubicles were observed.The middle anchorages at 5 cubicles were observed.Remaining anchorages could not be viewed due to electrical limitations.

Anchorages viewed matched documentation, therefore it is reasonable to conclude that the unobserved anchorages match plant documentation without further verification.

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?

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?C-89 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 9 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP06E Equipment Class: (3) Medium Voltage Switchgear Equipment

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Description:==

4160 VOLT ESF SWITCH BUS 142 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?

All front cubicle doors were opened. All rear back panels except for 5 were opened. No other adverse conditions were observed.Comments IPEEE Anchorage Notes: Panel is plug welded to embedded plate in floor.Seismic Walkdown Team: P. Gazda & J. Griffith -9/22/2012 Evaluated by: James Griffith Date: 10/5/2012 Philip Gazda 10/5/2012 C-90 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 9 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP06E Equipment Class: (3) Medium Voltage Switchgear Equipment

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Description:==

4160 VOLT ESF SWITCH BUS 142 Photos 10U Byron -de-energized Equip 9-22-12 002 C-91 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 5 of 9 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP06E Equipment Class: (3) Medium Voltage Switchgear Equipment

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Description:==

4160 VOLT ESF SWITCH BUS 142 wI] -ute-nerglzeu equip I--l Z u'C-92 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. I Correspondence No.: RS-12-161 Sheet 6 of 9 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP06E Equipment Class: (3) Medium Voltage Switchgear Equipment

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Description:==

4160 VOLT ESF SWITCH BUS 142 1AP C-93 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 7 of 9 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP06E Equipment Class: (3) Medium Voltage Switchgear Equipment

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Description:==

4160 VOLT ESF SWITCH BUS Fron -de-energized Equip 9-22-12 C-94 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 8 of 9 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP06E Equipment Class: (3) Medium Voltage Switchgear Equipment

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Description:==

4160 VOLT ESF SWITCH BUS 142 Byron -de-energized Equip 9-22-12 1AP(C-95 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 9 of 9 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP06E Equipment Class: (3) Medium Voltage Switchgear Equipment

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Description:==

4160 VOLT ESF SWITCH BUS 142 1AP06E Byron -de-energized C-96 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1APliE Equipment Class: (4) Transformers Equipment

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Description:==

EQ 480V ESF UNIT SUB 131X TRANSFORMER 1AP086 Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 426.00 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-3391F Revision AJ Detail 121 Weld meets or exceeds drawing requirements

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

C-97 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP11E Equipment Class: (4) Transformers Equipment

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Description:==

EQ 480V ESF UNIT SUB 131X TRANSFORMER 1AP086 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?

Front panel bent due to equipment configuration and is not a structural/seismic concern Missing bolts (2) on panel cover- IR 1398659 written. Not a structural/seismic issue since adequate bolts in place 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 C-98 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: IAP11E Equipment Class: (4) Tran, Equipment

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Description:==

EQ 480\sformers I ESF UNIT SUB 131X TRANSFORMER 1AP086 Photos--8V S C-99 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP11E Equipment Class: (4) Transformers Eauioment Descrotion:

EQ 480V ESF UNIT SUB 131X TRANSFORMER 1AP086 C-100 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 7 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP12E Equipment Class: (2) Low Voltage Switchgear Equipment

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Description:==

ASSY -480V ESF SWGR 132X Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 426.00 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.Anchoracie

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 Minor shrinkage cracking in floor judged to be acceptable.

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.)

Anchorage shown on drawing 6E-0-3391C, Rev. BE.C-101 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 7 Status: E N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP12E Equipment Class: (2) Low Voltage Switchgear Equipment

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Description:==

ASSY -480V ESF SWGR 132X 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

5 total cubicles.

All doors were opened. All rear anchorages were observed.All front anchorages were observed except for 2 cubicles due to electrical limitations.

The middle anchorages at I cubicle were observed.Remaining anchorages could not be viewed due to electrical limitations.

Anchorages viewed matched documentation, therefore it is reasonable to conclude that the unobserved anchorages match plant documentation without further verification.

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

Yes Welded drain line in vicinity.

Pipe movement toward switchgear prevented by pipe penetration (anchor) at masonry wall. Judged to be acceptable.

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

Open S-hooks addressed in IR 1398568. Lights are not directly over equipment so damage is unlikely and S-hooks are partially open -judged to be acceptable.

Masonry walls are seismic and would not collapse on 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?C-102 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 7 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP12E Equipment Class: (2) Low Voltage Switchgear Equipment

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Description:==

ASSY -480V ESF SWGR 132X 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?

All cubicle doors were opened. No other adverse conditions were observed.Comments IPEEE Anchorage Notes: Anchored by 4-1/2" plug welds per cubicle in front & 2 per cubicle in back.Seismic Walkdown Team: P. Gazda & J. Griffith -9/22/2012 Evaluated by: A# James Griffith Date: 10/5/2012 621 " Philip Gazda 10/5/2012 C-103 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 7 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP12E Equipment Class: (2) Low Voltage Switchgear Equipment

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Description:==

ASSY -480V ESF SWGR 132X Photos C-104 Byron Generating Station Unit I 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 5 of 7 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: iDment DescriDtion:

1 API12E (2) Low Voltage Switchgear ASSY -480V ESF SWGR 132X 1AP12E Byron -de-energized Equip 9-22-12 015 Byron -de-energized Equip 9-22-12 014 C-105 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 6 of 7 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP12E Equipment Class: (2) Low Voltage Switchgear Equipment

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Description:==

ASSY -480V ESF SWGR 132X 12017 C-106 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 7 of 7 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP12E Equipment Class: (2) Low Voltage Switchgear ASSY -480V ESF SWGR 132X C-107 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP13E Equipment Class: (4) Transformers Equipment

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Description:==

480V ESF UNIT SUBSTA 132X XFMR.Project:

Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 426.00 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-3391F Revision AJ Weld exceeds drawing requirements

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

C-108 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP13E Equipment Class: (4) Transformers Equipment

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Description:==

480V ESF UNIT SUBSTA 132X XFMR Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

8. Are overhead equipment, distribution systems, ceilihg 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 8/8/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-109 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP13E Equipment Class: (4) Transformers Equipment

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Description:==

480V ESF UNIT SUBSTA 132X XFMR Photos 480V Em C-110 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP13E Equipment Class: (4) Transformers Equipment

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Description:==

480V ESF UNIT SUBSTA 132X XFMR 1AP13E Byron 1 &2 8-8-12 031 C-111 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: YFE U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP21E Equipment Class: (1) Motor Control Centers Equipment

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Description:==

480VAUX BLDG ESF MCC 131X1 Project: Byron 1 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.Anchoraae 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?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.)

Drawing 6E-0-3391C Revision BE Weld exceeds or is equal to the drawing requirements

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

Yes Yes Yes Yes Yes C-112 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: YFN] U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP21E Equipment Class: (1) Motor Control Centers Equipment

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Description:==

480VAUX BLDG ESF MCC 131X1 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Large scaffold supporting lead blankets is near cabinet. Scaffold is well-secured and could not fall into the cabinet in accordance with Exelon Scaffolding Procedure 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 Yes 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?No 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 8/8/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-113 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: Y U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP21E Equipment Class: (1) Motor Control Centers Equipment

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Description:==

480V AUX BLDG ESF MCC 131X1 Photos C-1 14 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP22E Equipment Class: (1) Motor Control Centers Equipment

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Description:==

480V AUX BLDG ESF MCC 131X3 ASMBLY Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 383.00 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-0-3391C Revision BE Weld exceeds drawing requirements

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

C-115 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP22E Equipment Class: (1) Motor Control Centers Equipment

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Description:==

480V AUX BLDG ESF MCC 131X3 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?

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-116 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP22E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

480V AUX BLDG ESF MCC 131X3 ASMBLY Photos C-117 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP22E Equipment Class: (1) Motor Control Centers Equipment

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Description:==

480V AUX BLDG ESF MCC 131X3 ASMBLY I #-,%r"e C-118 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP24E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

EQ 480 V AUX BLDG ESF MCC 132X3 ASMBLY Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 383.00 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-0-3391C Revision BE Weld exceeds drawing requirements

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

C-119 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP24E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

EQ 480 V AUX BLDG ESF MCC 132X3 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 8/20/12 am M. Delaney & P. Gazda Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-120 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP24E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

EQ 480 V AUX BLDG ESF MCC 132X3 ASMBLY Photos 1AP24E Byron 1 &2 8-20-12 014 1AP24E Byron 1 & 2 8-20-12 015 C-121 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: EauiDment DescriDtion:

1AP24E (1) Motor Control Centers EQ 480 V AUX BLDG ESF MCC 132X3 ASMBLY z~'it byron i &~ z a-.u--iz u-i C-122 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet I of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP25E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V AUX BLDG ESF MCC 131X2 Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 414.00 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.Anchora-qe

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

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

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

SEWS notes -Channel stitched to embeds at 2" at 12" Weld exceeds or equals specified weld 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?

Yes Yes Yes Yes Yes Yes C-123 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: M N' U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP25E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V AUX BLDG ESF MCC 131X2 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Cabinet is bolted to adjacent cabinet IAP44E to eliminate spatial interaction issues 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?

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 8/20/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-124 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP25E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY- 480V AUX BLDG ESF MCC 131X2 Photos C-125 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Eauipment DescriDtion:

1AP25E (1) Motor Control Centers ASSY- 480V AUX BLDG ESF MCC 131X2 C-126 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP27E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

EQ 480V AUX BLDG MCC 132X2 ASMBLY Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 426.00 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-0-3391C Revision BE Weld exceeds drawing requirements

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

C-127 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP27E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

EQ 480V AUX BLDG MCC 132X2 ASMBLY Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Adjacent scaffold is well tied-off in accordance with Exelon Scaffolding Procedure Nearby cart is tied-off (restrained) in accordance with Byron Seismic Housekeeping Procedure Cabinet is bolted to adjacent cabinet 1AP47E to eliminate spatial interaction issues 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?

Yes 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 8/20/12 am M. Delaney & P. Gazda C-128 Byron Generating Station Unit 1 1200108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: [M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP27E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

EQ 480V AUX BLDG MCC 132X2 ASMBLY Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos MU C-129 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP27E Equipment Class: (1) Motor Control Centers Eauibment DescriDtion:

EQ 480V AUX BLDG MCC 132X2 ASMBLY C-130 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP38E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V AUX BLDG MCC 133X1A Project: Byron 1 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 6E-0-3391C Revision BE Weld exceeds or meets drawing requirements

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

C-131 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP38E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V AUX BLDG MCC 133X1A Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Yes A Radiation Protection cart is approximately 1" away from cabinet. IR 1399382 written to move cart.Adjacent lead blanket storage bin is bolted to the floor and would not interact with adjacent equipment 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 8/10/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-132 Byron Generating Station Unit 1 12Q0108.20-R-001 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:==

1AP38E (1) Motor Control Centers ASSY -480V AUX BLDG MCC 133X1A Photos 1AF C-133 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP38E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V AUX BLDG MCC 133X1A C-134 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev, 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP92E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V SXCT MCC 132Z1, SOUTH ELEC RM Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

ESWCT, 874.00 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% Y of SWEL items requiring such verification)?

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

.4. Is the anchorage free of visible cracks in the concrete near the anchors?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-0-3391C Revision BE Weld exceeds drawing requirement

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

Yes Yes Yes Yes Yes C-135 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: Mj N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP92E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V SXCT MCC 132ZI, SOUTH ELEC RM Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Cabinet is bolted to adjacent cabinet IAP92E to eliminate spatial interaction issues 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?

Yes 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?

One bolt is missing on one back panel but adequate bolts are in-place and acceptable.

Not a structural/seismic issue.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-136 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP92E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V SXCT MCC 132Z1, SOUTH ELEC RM Photos I MCC-132ZI (IAP92E)4W', EýW. TWER ESF.C-137 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP92E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V SXCT MCC 132Z1, SOUTH ELEC RM C-138 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 5 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP93E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V SXCT MCC 131Z1, NORTH ELEC RM Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

ESWCT, 874.00 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-0-3391C Revision BE Weld matches or exceeds drawing requirements

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

C-139 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 5 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP93E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY- 480V SXCT MCC 131Z1, NORTH ELEC RM Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Yes Cabinet is bolted to adjacent cabinet IAP89E to eliminate spatial interaction issues 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 in room. Unlikely that lights would disengage since the hooks are only slightly open and not all hooks are open. Therefore acceptable.

IR 1398127 wntten to close.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?

Small hairline cracks in nearby wall judged to be acceptable based on their size. Not a structural/seismic concern.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-140 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 5 Status: F- IN U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP93E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V SXCT MCC 131Z1, NORTH ELEC RM Photos C-141 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. I Correspondence No.: RS-12-161 Sheet 4 of 5 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Fnninrment Descrintion:

1AP93E (1) Motor Control Centers ASSY -480V SXCT MCC 131Z1, NORTH ELEC RM C-142 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 5 of 5 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP93E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V SXCT MCC 131Z1, NORTH ELEC RM C-143 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 5 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP98E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V ESF SXCT UNIT SUBSTA 132Z, SOUTH ELEC RM Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

ESWCT, 874.00 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 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-0-3391C Revision BE Weld exceeds drawing requirements

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

C-144 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 5 Status: r] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP98E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V ESF SXCT UNIT SUBSTA 132Z, SOUTH ELEC RM 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?

S-hooks appear closed from floor. IR 1398127 written to inspect and close any S-hooks as an extent of condition based on open S-hooks in other areas of the ESWCT 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?

Minor hairline cracks in nearby wall are small and not a structural/seismic concern.Comments Seismic walkdown team M. Delaney & P. Gazda 8/7/12 am Evaluated by: Marlene Delaney Date: 1015/2012 Philip Gazda 10/5/2012 C-145 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 5 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP98E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V ESF SXCT UNIT SUBSTA 132Z, SOUTH ELEC RM Photos C-146 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 5 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP98E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V ESF SXCT UNIT SUBSTA 132Z, SOUTH ELEC RM C-147 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 5 of 5 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP98E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V ESF SXCT UNIT SUBSTA 132Z, SOUTH ELEC RM C-148 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. I Correspondence No.: RS-12-161 Sheet 1 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP99E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V ESF SXCT UNIT SUBSTA 131Z, NORTH ELEC RM Project: Byron I SWEL Location (Bldg, Elev, Room/Area):

ESWCT, 874.00 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)?

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

4. Is the anchorage free of visible cracks in the concrete near the anchors?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-0-3391C Revision BE Weld matches or exceeds what is specified on documentation

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

Yes Yes Yes Yes Yes Yes C-149 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP99E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V ESF SXCT UNIT SUBSTA 131Z, NORTH ELEC RM 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?

Partially open S-hooks in room. Unlikely that lights would disengage since the hooks are only slightly open and not all hooks are open. Therefore acceptable.

IR 1398127 written to close.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-150 Byron Generating Station Unit I 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP99E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V ESF SXCT UNIT SUBSTA 131Z, NORTH ELEC RM Photos C-151 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1AP99E Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

ASSY -480V ESF SXCT UNIT SUBSTA 131Z, NORTH ELEC RM C-152 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1CC01PB Equipment Class: (5) Horizontal Pumps Equipment

==

Description:==

1B PUMP, COMPONENT COOLING 12X14-18 M66-3 ASMBLY Project: Byron 1 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.)

Drawing M-1220 Sheet 4 Revision V 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-153 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: FV N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1CC01PB Equipment Class: (5) Horizontal Pumps Equipment

==

Description:==

1B PUMP, COMPONENT COOLING 12X14-18 M66-3 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?

Sight (level) glass is well-protected and acceptable 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-154 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1CC01PB Equipment Class: (5) Horizontal Pumps Equipment

==

Description:==

1B PUMP, COMPONENT COOLING 12X14-18 M66-3 ASMBLY Photos C-155 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1CC685 Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

==

Description:==

CC FROM RC PMPS THERMAL BARRIER ISOL VLV ASMBLY; 3" Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 395.00 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% No of SWEL items requiring such verification)?

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-156 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1CC685 Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

==

Description:==

CC FROM RC PMPS THERMAL BARRIER ISOLVLVASMBLY; 3" 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?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?

No structural/seismic issues Comments Seismic walkdown team 8/8/12 pm M. Delaney & P. Gazda Evaluated by: Marlene Delaney Date: 10/5/2012 7. "( /Philip Gazda 10/5/2012 C-157 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M-I N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment

==

Description:==

Photos 1 CC685 (8) Motor-Operated and Solenoid-Operated Valves CC FROM RC PMPS THERMAL BARRIER ISOL VLV ASMBLY; 3" C-158 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1CV01PB Equipment Class: (5) Horizontal Pumps Equipment

==

Description:==

PUMP, 1 B CENTRIFUGAL CHARGING ASMBLY Project: Byron 1 SWEL Location (BIdg, 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.Anchora-ge

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-1220 Sheet 3 Revision S 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-159 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: Mi- N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1CV01PB Equipment Class: (5) Horizontal Pumps Equipment

==

Description:==

PUMP, 1 B CENTRIFUGAL CHARGING 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 walls are seismic and would not collapse on equipment Removable block walls restrained by grating 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 8/8/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-160 Byron Generating Station Unit 1 12QO108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1CVO1PB Equipment Class: (5) Horizontal Pumps Equipment

==

Description:==

PUMP,1B CENTRIFUGAL CHARGING ASMBLY C-161 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1CV02SB Equipment Class: (21) Tanks and Heat Exchangers Equipment

==

Description:==

1B CENTRIFUGAL CHARGING PUMP GEAR COOLER Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Aiuxiliary, 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% 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-1 62 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1CV02SB Equipment Class: (21) Tanks and Heat Exchangers Equipment

==

Description:==

1B CENTRIFUGAL CHARGING PUMP GEAR COOLER 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?

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?

No structural/seismic issues Comments Seismic walkdown team M. Delaney & P. Gazda 8/8/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-163 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. I Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1CV02SB Equipment Class: (21) Tanks and Heat Exchangers Equipment

==

Description:==

11B CENTRIFUGAL CHARGING PUMP GEAR COOLER Photos None.C-1 64 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1CV112E Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

==

Description:==

RWST TO CHG PMPS SUCT VLV (C/S AT 1PM05J) ASMBLY; 8" Project: Byron 1 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-165 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1CV112E Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

==

Description:==

RWST TO CHG PMPS SUCT VLV (C/S AT 1PM05J) ASMBLY; 8" Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Yes Valve is in contact with adjacent pipe. Calculation WO00151-Add B (Rev O00B), U004065-Add B (Rev 1D), NED-M-MSD-029 Add A (Rev OA) address valve clearance issues from IPEEE including valve 1 CV 112E.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 8/8/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-166 Byron Generating Station Unit I 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1CV112E Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

==

Description:==

RWST TO CHG PMPS SUCT VLV (C/S AT 1PM05J) ASMBLY; 8" Photos 1CV1 12E Byron I & 2 8-8-12 056 1CV112E Byron 1 & 2 8-8-12 057 C-167 Byron Generating Station Unit I 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1CV8152 Equipment Class: (7) Fluid-Operated Valves Equipment

==

Description:==

ASSY -AOV U-1 LTDWN HDR ISOL VLV (EOP VLV).Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area)-

Auxiliary, 374.00 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.Anchoracie

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?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-168 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1CV8152 Equipment Class: (7) Fluid-Operated Valves Equipment

==

Description:==

ASSY -AOV U-1 LTDWN HDR ISOL VLV (EOP VLV)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?

No structural/seismic issues Comments Seismic walkdown team M. Delaney & P. Gazda 8/8/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-169 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1CV8152 Equipment Class: (7) Fluid-Operated Valves Equipment

==

Description:==

ASSY -AOV U-1 LTDWN HDR ISOL VLV (EOP VLV)Photos 1CV8152 Byron 1 & 2 8-8-12 052 C-170 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet I of 3 Status: T N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1DC01E Equipment Class:. (15) Batteries on Racks Equipment

==

Description:==

125V BATTERY 111 DIV. 11 AND Rack Project: Byron 1 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.Anchoracqe

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-339 1A Y Revision B Note that one anchor on drawing is noted as having an embedment depth of 7 1/2" with approximately 4 1/4" bolt projection.

Other anchors have approximately 3 1/2" bolt projection which would equate to an embedment greater than 8" (Bolt length = 7. 5"+4.25"=

11.75" therefore

11. 75"-3.5"=8.

25" which is greater than 8") where 8" minimum embedment is perDCS 24.1.2 Revision 0 page 24 for 1" diameter anchors. it is reasonable to consider all expansion anchors being the same length.C-171 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: F] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1DCO1E Equipment Class: (15) Batteries on Racks Equipment

==

Description:==

125V BATTERY 111 DIV. 11 AND Rack 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?

S hooks appear closed but many are not visible. IR 1399377 written to address extent of condition and follow-up S-hook inspection Masonry walls are seismic and would not collapse on 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?

Comments Seismic walkdown team M. Delaney & P. Gazda 8/8/12 am C-172 Byron Generating Station Unit 1 12Q0108.20-R-001 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:==

1 DC01 E (15) Batteries on Racks 125V BATTERY 111 DIV. 11 AND Rack Evaluated by: Marlene Delaney Date: 10/5/2012 62 ' Philip Gazda 10/5/2012 Photos DiD B 1 DC01 E Byro 128812012 1 DC01IE Byron 1 & 2 8-8-12 013 C-173 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1DC02E Equipment Class: (15) Batteries on Racks Equipment

==

Description:==

125V BATTERY 112 DIV. 12 and Rack Project: Byron 1 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-0-3391A Y Revision B 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-174 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: IDC02E Equipment Class: (15) Batteries on Racks Equipment

==

Description:==

125V BATTERY 112 DIV. 12 and Rack 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 S hooks do not appear open however extent of condition IR 1399380 was written to inspect and close S-hooks if found open 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 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 8/8/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-175 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: lDC02E Equipment Class: (15) Batteries on Racks Equipment

==

Description:==

125V BATTERY 112 DIV. 12 and Rack Photos C-176 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1DC04E Equipment Class: (16) Battery Chargers and Inverters Equipment

==

Description:==

125V DC BATT CHGR 112 Project: Byron 1 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.Anchora-ge

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

Yes 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?

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

Yes C-177 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1DC04E Equipment Class: (16) Battery Chargers and Inverters Equipment

==

Description:==

125V DC BATT CHGR 112 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 8-8-12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-178 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: lDC04E Equipment Class: (16) Battery Chargers and Inverters Equipment

==

Description:==

125V DC BATT CHGR 112 Photos C-179 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1 DC05E Equipment Class: (14) Distribution Panels Equipment

==

Description:==

125V DC ESF DISTR CENTER BUS 111 Project: Byron 1 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 Surface rust (mild surface oxidation) resulting from condensation from adjacent fan 1 VE06S, not a structural/seismic issue 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-0-3391C Revision BE Weld equals or exceeds drawing requirements

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

C-180 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: T] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: lDC05E Equipment Class: (14) Distribution Panels Equipment

==

Description:==

125V DC ESF DISTR CENTER BUS 111 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 8-8-12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-181 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: lDC05E Equipment Class: (14) Distribution Panels Equipment

==

Description:==

125V DC ESF DISTR CENTER BUS 111 Photos C-182 Byron Generating Station Unit I 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1 DC05E Equipment Class: (14) Distribution Panels Equipment

==

Description:==

125V DC ESF DISTR CENTER BUS 111 C-183 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1DC06E Equipment Class: (14) Distribution Panels Equipment

==

Description:==

125V DC ESF DISTR CENTER BUS 112 Project: Byron 1 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-0-3391C Revision BE Weld exceeds or equals drawing requirements

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

C-184 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: lDC06E Equipment Class: (14) Distribution Panels Equipment

==

Description:==

125V DC ESF DISTR CENTER BUS 112 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 8-8-12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-185 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: lDC06E Equipment Class: (14) Distribution Panels Equipment

==

Description:==

125V DC ESF DISTR CENTER BUS 112 Photos C-186 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: lDC06E Equipment Class: (14) Distribution Panels Equipment

==

Description:==

125V DC ESF DISTR CENTER BUS 112 C-187 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1DC10J Equipment Class: (14) Distribution Panels Equipment

==

Description:==

125V DC FUSE PANEL -DIV. 11 Project: Byron 1 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?

4. Is the anchorage free of visible cracks in the concrete near the anchors?Yes 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-188 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: lDC10J Equipment Class: (14) Distribution Panels Equipment

==

Description:==

125V DC FUSE PANEL -DIV. 11 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 8/8/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-189 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. I Correspondence No.: RS-12-161 Sheet 3 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1DC1OJ Equipment Class: (14) Distribution Panels Equipment

==

Description:==

125V DC FUSE PANEL -DIV. 11 Photos C-190 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: lDC10J Equipment Class: (14) Distribution Panels Eauipment

==

Description:==

125V DC FUSE PANEL -DIV. 11 C-191