ML12341A164

Q0108.20-R-001, Rev. 1, Appendix C, Seismic Walkdown Checklist (Swc). Part 2 of 3

ML12341A164
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: ML12341A164 (141)

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.: 1DC11J Equipment Class: (14) Distribution Panels Equipment

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Description:==

125V DC FUSE PANEL -DIV. 12 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?

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-192 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: Y] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: lDC11J Equipment Class: (14) Distribution Panels Equipment

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Description:==

125V DC FUSE PANEL -DIV. 12 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 M. Delaney & P. Gazda 8/8/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-193 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M IN U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment

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Description:==

IDC11J (14) Distribution Panels 125V DC FUSE PANEL -DIV. 12 Photos C-194 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.: 1DG01KB Equipment Class: (17) Engine-Generators Equipment

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Description:==

1B DIESEL GENERATOR Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 401.00 ft, ALL Manufacturer/Model:

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

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

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

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

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

Drawing M-1222 Sheet 5 Revision N 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-195 Byron Generating Station Unit I 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.: lDG01KB Equipment Class: (17) Engine-Generators Equipment

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Description:==

1B DIESEL GENERATOR 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 P. Gazda & M. Delaney 8-7-12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-196 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 4 Status: Y] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment

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Description:==

1 DG01 KB (17) Engine-Generators 1lB DIESEL GENERATOR Photos Photos i uLUI r..i5 tyron -i

• v C-197 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.: 1DG01KB Equipment Class: (17) Engine-Generators EauiDment

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Description:==

1B DIESEL GENERATOR i utu1i i~s syron 1 & z u C-198 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.: 1DO01TB Equipment Class: (21) Tanks and Heat Exchangers Equipment

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Description:==

DIESEL OIL STORAGE TANK 1B Project: Byron I SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 373.00 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.Anchoragqe

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 Crack at anchor in pad that does not extend to base slab. Drawing M-1214 Sheet 3 indicate adequate embedment in base slab (1 -3 1/2") so small crack has no structural/seismic issue. IR 1398190 was wntten to document acceptability

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

C-199 Byron Generating Station Unit 1 12QO108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1DO01TB Equipment Class: (21) Tanks and Heat Exchangers Equipment

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Description:==

DIESEL OIL STORAGE TANK 1B Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

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

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

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/7/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-200 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.: 1DO01TB Equipment Class: (21) Tanks and Heat Exchangers Equipment

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Description:==

DIESEL OIL STORAGE TANK 1B Photos C-201 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.: 1DO01TB Equipment Class: (21) Tanks and Heat Exchangers Equipment

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Description:==

DIESEL OIL STORAGE TANK 1B C-202 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet I of 3 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1DO10T Equipment Class: (21) Tanks and Heat Exchangers Equipment

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Description:==

500 GAL DIESEL OIL DAY TANK (AF)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.)

M-1220 Sheet 5 Revision R 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-203 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.: 1DO10T Equipment Class: (21) Tanks and Heat Exchangers Equipment

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Description:==

500 GAL DIESEL OIL DAY TANK (AF)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 8/20/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-204 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: MZ N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment

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Description:==

1DO10T (21) Tanks and Heat Exchangers 500 GAL DIESEL OIL DAY TANK (AF)Photos C-205 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.: IFC010 Equipment Class: (0) Other Equipment

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Description:==

REFUELING WTR PURIF PMP SUCT FROM U-1 REFUEL CAV CNMT ISOL 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% 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-206 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.: 1FC010 Equipment Class: (0) Other Equipment

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Description:==

REFUELING W'RPURIF PMP SUCT FROM U-1 REFUEL CAV CNMT ISOL Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Yes 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?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 M. Delaney & P. Gazda 8/21/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-207 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.: 1FC010 Equipment Class: (0) Other Equipment

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Description:==

REFUELING WTR PURIF PMP SUCT FROM U-1 REFUEL CAV CNMT ISOL Photos 1F(010 Byron 1 & 2 8-21-12 008 C-208 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.: 1FC01A Equipment Class: (21) Tanks and Heat Exchangers Equipment

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Description:==

SPENT FUEL PIT HEAT EXCHANGER Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

FH, 401.00 ft, ALL Manufacturer/Model:

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

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

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

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

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

Drawing M-1219 Sheet 3 Revision AH Detail 81 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-209 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.: 1FC01A Equipment Class: (21) Tanks and Heat Exchangers Equipment

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Description:==

SPENT FUEL PIT HEAT EXCHANGER 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 M. Delaney & P. Gazda 8/9/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-210 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.: 1FC01A Equipment Class: (21) Tanks and Heat Exchangers Equipment

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Description:==

SPENT FUEL PIT HEAT EXCHANGER Photos C-211 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.: 1FC01P Equipment Class: (5) Horizontal Pumps Equipment

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Description:==

U-1 FUEL POOL COOLING PUMP Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 401.00 ft, ALL Manufacturer/Model:

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

Additional space is provided at the end of this checklist for documenting other comments.Anchoraqge

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

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

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

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

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

C-212 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.: 1FC01P Equipment Class: (5) Horizontal Pumps Equipment

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Description:==

U-1 FUEL POOL COOLING PUMP Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

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

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

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/9/12 am Evaluated by: Marlene Delaney Date: 10/512012 Philip Gazda 10/5/2012 C-213 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.: 1FC01P Equipment Class: (5) Horizontal Pumps Equipment

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Description:==

U-1 FUEL POOL COOLING PUMP Photos C-214 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. I Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1FC01P Equipment Class: (5) Horizontal Pumps Equipment

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Description:==

U-1 FUEL POOL COOLING PUMP C-215 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.: 1FC8756 Equipment Class: (0) Other Equipment

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Description:==

Ul SPENT FUEL PIT PMP SUCTION ISOL Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

FH, 401.00 ft, ALL Manufacturer/Model:

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

Additional space is provided at the end of this checklist for documenting other comments.Anchorage 1. Is anchorage configuration verification required (i.e., is the item one of the 50% 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-216 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.: 1FC8756 Equipment Class: (0) Other Equipment

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Description:==

U1 SPENT FUEL PIT PMP SUCTION ISOL Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

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

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

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/9/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-217 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1FC8756 Equipment Class: (0) Other Equipment

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Description:==

U1 SPENT FUEL PIT PMP SUCTION ISOL Photos C-218 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.: 1FC8758 Equipment Class: (0) Other Equipment

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Description:==

REFUELING WTR PURIF PMP SUCT FROM U-1 RWST 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.Anchora-qe

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-219 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.: 1FC8758 Equipment Class: (0) Other Equipment

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Description:==

REFUELING WTR PURIF PMP SUCT FROM U-1 RWST 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 8/21/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-220 Byron Generating Station Unit 1 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.: Equipment Class: Equipment

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Description:==

1FC8758 (0) Other REFUELING VVTR PURIF PMP SUCT FROM U-1 RWST Photos i si- to yron 1 & z ts-z i- zuu4 C-221 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.: 1FC8762A Equipment Class: (0) Other Equipment

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Description:==

SPENT FUEL PIT HX INLET Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

FH, 401.00 ft, ALL Manufacturer/Model:

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

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

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

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

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

Not Applicable Not Applicable Not Applicable

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

Yes C-222 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.: 1FC8762A Equipment Class: (0) Other Equipment

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Description:==

SPENT FUEL PIT HX INLET Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

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

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

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

Rugged valve with nearby supports.Comments Seismic walkdown team M. Delaney & P. Gazda 8/9/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-223 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.: 1FC8762A Equipment Class: (0) Other Equipment

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Description:==

SPENT FUEL PIT HX INLET Photos 1FC8762A Byron 1 & 2 8-9-12 004 C-224 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.: 1FC8762B Equipment Class: (0) Other Equipment

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Description:==

U1 SPENT FUEL PIT HX OUTLET Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

FH, 401.00 ft, ALL Manufacturer/Model:

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

Additional space is provided at the end of this checklist for documenting other comments.Anchorage 1. Is anchorage configuration verification required (i.e., is the item one of the50%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-225 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.: 1FC8762B Equipment Class: (0) Other Equipment

==

Description:==

Ul SPENT FUEL PIT HX OUTLET 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?

Valve previously tagged for boric acid as part of BACC Program. Not a structural/seismic issue.Comments Seismic walkdown team M. Delaney & P. Gazda 8/9/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-226 Byron Generating Station Unit I 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.: 1FC8762B Equipment Class: (0) Other Equipment

==

Description:==

Ul SPENT FUEL PIT HX OUTLET Photos 1FC8762B Byron 1 & 2 8-9-12 006 C-227 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.: 1FC8766 Equipment Class: (0) Other Equipment

==

Description:==

SPENT FUEL PIT FLTR DEMIN LOOP RTRN TO U-1 RWST.CHECK VLV 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-228 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.: 1FC8766 Equipment Class: (0) Other Equipment

==

Description:==

SPENT FUEL PIT FLTR DEMIN LOOP RTRN TO U-1 RWST CHECK 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 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 8/21/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-229 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.: 1FC8766 Equipment Class: (0) Other Equipment

==

Description:==

SPENT FUEL PIT FLTR DEMIN LOOP RTRN TO U-1 RWST CHECK VLV Photos 1FC8766 Byron 1 & 2 8-21-12 006 C-230 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.: 1FC8793 Equipment Class: (0) Other Equipment

==

Description:==

SPENT FUEL PIT PMP DISCH CHECK Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

FH, 401.00 ft, ALL Manufacturer/Model:

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

Additional space is provided at the end of this checklist for documenting other comments.Anchorage 1. Is anchorage configuration verification required (i.e., is the item one of the 50% No 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.)

Not Applicable Not Applicable Not Applicable Not Applicable

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

Yes C-231 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.: 1FC8793 Equipment Class: (0) Other Equipment

==

Description:==

SPENT FUEL PIT PMP DISCH CHECK 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 8/9/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-232 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.: 1FC8793 Equipment Class: (0) Other Equipment

==

Description:==

SPENT FUEL PIT PMP DISCH CHECK Photos 1h1Y i-a 93tyron 1 & 2 a-9-12 uuts C-233 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: MI N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1FC8794 Equipment Class: (0) Other Equipment

==

Description:==

SPENT FUEL PIT FLTR DEMIN LOOP INLT ISOL Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

FH, 401.00 ft, ALL Manufacturer/Model:

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

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

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

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

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

Not Applicable Not Applicable Not Applicable

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

Yes C-234 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.: 1FC8794 Equipment Class: (0) Other Equipment

==

Description:==

SPENT FUEL PIT FLTR DEMIN LOOP INLT ISOL 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 8/9/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-235 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.: 1 FC8794 Equipment Class: (0) Other Equipment

==

Description:==

SPENT FUEL PIT FLTR DEMIN LOOP INLT ISOL Photos 1FC8794 Byron 1 & 2 8-9-12 009 C-236 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. I Correspondence No.: RS-12-161 Sheet I of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1FT-0121 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

CHARGING LINE DIP CELL FLOW XMITTR 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?

Instrument securely mounted to Rack 1PL97J. Rack is well-braced and anchored with no issues.Yes C-237 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.: 1FT-0121 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

CHARGING LINE D/P CELL FLOW XMITTR 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 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?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 P. Gazda & M. Delaney 8-20-12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-238 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.: 1FT-0121 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

CHARGING LINE DIP CELL FLOW XMITTR Photos C-239 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.: 1FT-0132 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

LETDOWN FLOW DIP CELL 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?

Instrument securely mounted to rack that is well-anchored to seismic block wall that would not collapse on equipment Yes C-240 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. I Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1FT-0132 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

LETDOWN FLOW DIP CELL 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 portion secured 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 P. Gazda & M. Delaney 8-20-12 pm Evaluated by: Marlene Delaney Date: 10/5/2012Philip Gazda 10/5/2012 C-241 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.: 1FT-0132 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

LETDOWN FLOW DIP CELL Photos C-242 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.: 1FT-AF014 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

AF TO SG 1B FLOW TRANSMITTER 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% 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?

Instrument is securely attached to Rack 1PL84J which is well-braced and anchored.Yes C-243 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.: 1FT-AF014 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

AF TO SG lB FLOW TRANSMITTER Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Robust barrier protecting equipment/rack.

Well-braced and anchored.

No structural/seismic issues and acceptable.

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 Note there is a large crack in the block wall but is not a structural concem since it appears that it is at the end of the wall near the column which is not a location of large stresses.

Judged acceptable.

Crack justification included in Calculation 16.1.2 Revision 2 page 114A. 27 9. Do attached lines have adequate flexibility to avoid damage?Yes Yes Yes 10.: Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Other Adverse Conditions

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

Comments Seismic walkdown team P. Gazda & M. Delaney 8-20-12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-244 Byron Generating Station Unit 1 1200108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1FT-AF014 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

AF TO SG 1B FLOW TRANSMITTER Photos C-245 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.: 1HS-FC001 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

SPENT FUEL PIT PUMP C/S Box on wall Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

FH, 401.00 ft, ALL Manufacturer/Model:

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

Additional space is provided at the end of this checklist for documenting other comments.Anchoracqe

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?

Anchored to seismic block wall that would not collapse on equipment Yes C-246 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.: 1HS-FC001 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

SPENT FUEL PIT PUMP C/S Box on wall 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 8/9/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-247 Byron Generating Station Unit I 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M-1 N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1HS-F Equipment Class: (18) In Equipment

==

Description:==

SPEN cool strumnents on Racks T FUEL PIT PUMP C/S Box on wall Photos Photos 1HS-FCOOI Byron 1 & 2 8-9-12 023 C-248 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet I of 3 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: IP05E Equipment Class: (16) Battery Chargers and Inverters Equipment

==

Description:==

INVERTER INST BUS 111 1-3371 AB1 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 Visually verified anchors through ventilation panel in base of unit.6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-249 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.: 1IP05E Equipment Class: (16) Battery Chargers and Inverters Equipment

==

Description:==

INVERTER INST BUS 111 1-3371 AB1 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?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-250 Byron Generating Station Unit 1 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.: 1IP05E Equipment Class: (16) Battery Chargers and Inverters Equipment

==

Description:==

INVERTER INST BUS 111 1-3371 AB1 Photos C-251 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet I of 3 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: lIP07E Equipment Class: (16) Battery Chargers and Inverters Equipment

==

Description:==

INVERTER INST BUS 113 1-3371 AB1 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 Anchorage verified through ventilation grating 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-252 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.: lIP07E Equipment Class: (16) Battery Chargers and Inverters Equipment

==

Description:==

INVERTER INST BUS 113 1-3371 AB1 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Nearby fan secured and judged acceptable

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 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-253 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.: IlP07E Equipment Class: (16) Battery Chargers and Inverters Equipment

==

Description:==

INVERTER INST BUS 113 1-3371 AB1 Photos C-254 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.: lIP08E Equipment Class: (16) Battery Chargers and Inverters Equipment

==

Description:==

INVERTER INST BUS 114 1-3371 AB1 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-0-339 IC Revision BE Anchorage verified through ventilation panel at base of unit.6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

C-255 Byron Generating Station Unit 1 12QO108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: lIP08E Equipment Class: (16) Battery Chargers and Inverters Equipment

==

Description:==

INVERTER INST BUS 114 1-3371 AB1 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 Adjacent fan secured and judged acceptable

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

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

Comments Seismic walkdown team P. Gazda & M. Delaney 8-8-12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-256 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.: 1IP08E Equipment Class: (16) Battery Chargers and Inverters Equipment

==

Description:==

INVERTER INST BUS 114 1-3371 AB1 C-257 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: Mi N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1 LT-0459 Equipment Class: (18) Instruments on Racks Equipment

==

Description:==

EQ PRESSURIZER LEVEL TRANSMITTER Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Cont, 377.00 ft, ALL Manufacturer/Model:

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

Additional space is provided at the end of this checklist for documenting other comments.Anchoracqe

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-258 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.: lLT-0459 Equipment Class: (18) Instruments on Racks Equipment

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Description:==

EQ PRESSURIZER LEVEL TRANSMITTER 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: P. Gazda & J. Griffith -9/19/2012 Evaluated by: James Griffith Date: 10/5/2012 Philip Gazda 10/5/2012 C-259 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.: 1LT-0459 Equipment Class: (18) Instruments on Racks Equipment

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Description:==

EQ PRESSURIZER LEVEL TRANSMITTER Photos C-260 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet I of 3 Status: [-] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: lLT-0518 Equipment Class: (18) Instruments on Racks Equipment

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Description:==

S/G 1A LEVEL LOOP D/P XMTTR 2/FILLED LEG Project: Byron I SWEL Location (Bldg, Elev, Room/Area):

Cont, 412.00 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?

4 mounting bolts from instrument to rack. Rack anchorage to wall is acceptable.

Yes C-261 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.: 1LT-0518 Equipment Class: (18) Instruments on Racks Equipment

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Description:==

S/G 1A LEVEL LOOP DIP XMTTR 2/FILLED LEG 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: P. Gazda & J. Griffith -9/19/2012 Evaluated by: James Griffith Date: 10/5/2012 Philip Gazda 10/5/2012 Photos C-262 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.: 1LT-0518 Equipment Class: (18) Instruments on Racks EauiDment DescriDtion:

S/G 1A LEVEL LOOP D/P XMTTR 2/FILLED LEG lLT-0518 BYRON 010 C-263 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.: 1LT-0932 Equipment Class: (18) Instruments on Racks Equipment

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Description:==

REF WTR STG TK LVL DIP XMTTR Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 379.00 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.)

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

Instrument is securely attached on rack that is well-anchored to concrete wall.Not Applicable Not Applicable Not Applicable Yes C-264 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: Y] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: lLT-0932 Equipment Class: (18) Instruments on Racks Equipment

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Description:==

REF WTR STG TK LVL DIP XMTTR 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?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 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-265 Byron Generating Station Unit I 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.: 1 LT-0932 Equipment Class: (18) Instruments on Racks Equipment

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Description:==

REF WTR STG TK LVL DIP XMTTR Photos I L I-UU;4 tyron 1 & 6 -t-1 ~C-266 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.: 1MS001A Equipment Class: (7) Fluid-Operated Valves Equipment

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Description:==

MS ISOL VLV LOOP 1A ASMBLY; 30-1/4" Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 377:00 ft, ALL Manufacturer/Model:

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

Additional space is provided at the end of this checklist for documenting other comments.Anchorage 1. Is anchorage configuration verification required (i.e., is the item one of the 50% 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-267 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.: lMS001A Equipment Class: (7) Fluid-Operated Valves Equipment

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Description:==

MS ISOL VLV LOOP 1A ASMBLY; 30-1/4" 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?

Bolt missing at accumulator (top of valve). System Engineer contacted and missing bolts are acceptable since they only used for rigging. 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-268 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.: lMS001A Equipment Class: (7) Fluid-Operated Valves Equipment

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Description:==

MS ISOL VLV LOOP 1A ASMBLY; 30-1/4" Photos C-269 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.: 1MS018A Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

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Description:==

S/GIA PORV ASMBLY; 8" Project: Byron I SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 401.00 ft, ALL Manufacturer/Model:

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

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

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

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

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

Not Applicable Not Applicable Not Applicable

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

Yes C-270 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.: 1MS018A Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

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Description:==

S/G IA PORV ASMBLY; 8" 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?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?

There is degradation at the joint at the containment.

The joints in question are made up of some sort of compressible/flexible material.

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

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/7/12 am C-271 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.: lMS018A Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

==

Description:==

S/G lA PORV ASMBLY; 8" Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos C-272 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. I Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1MS018A Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

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Description:==

S/G 1A PORV ASMBLY; 8" I C-273 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.: 1MS018B Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

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Description:==

S/G 1B PORV ASMBLY; 8" Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 401.00 ft, ALL Manufacturer/Model:

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

Additional space is provided at the end of this checklist for documenting other comments.Anchoracie

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-274 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.: 1MS018B Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

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Description:==

S/G 1B PORV ASMBLY; 8" Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

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

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

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/7/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 621 " Philip Gazda 10/5/2012 C-275 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.: lMS018B Equipment Class: (8) Motor-Operated and Solenoid-Operated Valves Equipment

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Description:==

S/G 1 B PORV ASMBLY; 8" Photos C-276 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.: 1PA01J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

U-1 PROC I&C RACK PROTECT CH 1 CAB I 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)?

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?No 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.)

Not Applicable

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

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

Yes C-277 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.: 1PA01J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

U-1 PROC I&C RACK PROTECT CH 1 CAB 1 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?.

Yes Cabinets are bolted together 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?

Numerous partially open S-hooks identified.

It is unlikely that the lights would become disengaged since the hooks are only partially open and not all hooks are open -judged acceptable.

IR 1397693 written to inspect and fully close S-hooks.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 8/6/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 62 Philip Gazda 10/5/2012 C-278 Byron Generating Station Unit 1 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.: 1PA01J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

U-1 PROC I&C RACK PROTECT CH 1 CAB 1 Photos POTECTION B2BINETyNOB

&RACKS 11,13 1 PA01 J Byron I &:208 1PA01 J Byron 1 & 2 090 C-279 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. I Correspondence No.: RS-12-161 Sheet 1 of 3 Seismic Walkdown Checklist (SWC)Status: M-l N U Equipment ID No.: 1PA02J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

U-1 PROC I&C RACK PROTECT CH 2 CAB 2 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?

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

Yes C-280 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-1 2-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1PA02J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

U-1 PROC I&C RACK PROTECT CH 2 CAB 2 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Yes Cabinets are bolted together 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?

Numerous partially open S-hooks identified.

It is unlikely that the lights would become disengaged since the hooks are only partially open and not all hooks are open -judged acceptable.

IR 1397693 written to inspect and fully close S-hooks.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-281 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.: 1 PA02J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

U-1 PROC I&C RACK PROTECT CH 2 CAB 2 C-282 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.: 1PA03J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

U-1 PROC I&C RACK PROTECT CH 3 CAB 3 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?

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

Not Applicable

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

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

Yes C-283 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.: 1PA03J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

U-1 PROC I&C RACK PROTECT CH 3 CAB 3 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Yes Cabinets are bolted together 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?

Numerous partially open S-hooks identified.

It is unlikely that the lights would become disengaged since the hooks are only partially open and not all hooks are open -judged acceptable.

IR 1397693 written to inspect and fully close S-hooks.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-284 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.: 1PA03J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

U-1 PROC I&C RACK PROTECT CH 3 CAB 3 Photos 1 PA03J Byron 1 & 2 094 C-285 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.: 1PA04J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

U-1 PROC I&C RACK PROTECT CH 4 CAB 4 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?

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

Not Applicable

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

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

Yes C-286 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.: 1PA04J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

U-1 PROC I&C RACK PROTECT CH 4 CAB 4 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Cabinets are bolted together 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?

Numerous partially open S-hooks identified.

It is unlikely that the lights would become disengaged since the hooks are only partially open and not all hooks are open -judged acceptable.

IR 1397693 written to inspect and fully close S-hooks.9. Do attached lines have adequate flexibility to avoid damage?Yes Yes Yes Yes 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-287 Byron Generating Station Unit 1 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.: 1PA04J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

U-1 PROC I&C RACK PROTECT CH 4 CAB 4 Photos C-288 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.: 1PA06J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

U-1 PROC I&C RACK CONT GRP 2 CAB 6 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.Anchoraqge

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.)

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

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

Not Applicable Yes C-289 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: -N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1PA06J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

U-1 PROC I&C RACK CONT GRP 2 CAB 6 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Cabinets are bolted together to eliminate spatial interaction issues during a seismic event.Cabinet is 1 3/4" away from Column P12. Adequate clearance for string of cabinets bolted together and is judged acceptable.

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

Numerous partially open S-hooks identified.

It is unlikely that the lights would become disengaged since the hooks are only partially open and not all hooks are open -judged acceptable.

IR 1397693 written to inspect and fully close S-hooks.9. Do attached lines have adequate flexibility to avoid damage?10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Yes Yes Yes Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-290 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:==

I PA06J (20) Instrumentation and Control Panels and Cabinets U-1 PROC I&C RACK CONT GRP 2 CAB 6 Photos C-291 Byron Generating Station Unit 1 12QO108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: MI N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1PA07J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

PROC I&C RACK CONT GRP 3 CAB 7 Project: Byron I SWEL Location (Bldg, Elev, Room/Area):

Auxiliary, 451.00 ft, ALL Manufacturer/Model:

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

Additional space is provided at the end of this checklist for documenting other comments.Anchorage 1. Is anchorage configuration verification required (i.e., is the item one of the 50% No of SWEL items requiring such verification)?

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

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

Not Applicable

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

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

Yes C-292 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.: 1PA07J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

PROC I&C RACK CONT GRP 3 CAB 7 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Cabinets are bolted together 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?

Numerous partially open S-hooks identified.

It is unlikely that the lights would become disengaged since the hooks are only partially open and not all hooks are open -judged acceptable.

IR 1397693 written to inspect and fully close S-hooks.9. Do attached lines have adequate flexibility to avoid damage?Yes Yes Yes 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-293 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.: 1PA07J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

PROC I&C RACK CONT GRP 3 CAB 7 Photos C-294 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.: 1PA08J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

U-1 PROC I&C 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%of SWEL items requiring such verification)?

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

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

Not Applicable

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

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

Yes C-295 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.: 1PA08J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

U-1 PROC I&C RACK Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Cabinets are bolted together 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?

Numerous partially open S-hooks identified.

It is unlikely that the lights would become disengaged since the hooks are only partially open and not all hooks are open -judged acceptable.

IR 1397693 written to inspect and fully close S-hooks.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 8/6112 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-296 Byron Generating Station Unit 1 12Q0108.20-R-O01 Rev. 1 Correspondence No.: RS-12-161 Sheet 3 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1PA08J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

U-1 PROC I&C RACK Photos C-297 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.: 1PA09J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB PROT SYST SOL ST RX/ESF TRN A 0-3371B AB1 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)?

2. Is the anchorage free of bent, broken, missing or loose hardware?No Yes 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 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

Not Applicable

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

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

Yes C-298 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.: 1 PA09J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB PROT SYST SOL ST RX/ESF TRN A 0-3371B AB1 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Yes 1PAO9J is bolted in the interior to Panel 1PA33J to eliminate seismic interaction during a seismic event.At Panel IPA 11J, the panels are bolted together in the back by an exterior arrangement of 4 bolts. At the front, the panels are bolted together with an interior bolt. There is a gap between the cabinets approximately equal to 1/8".IR 1397709 was written. The panels are laterally and torsionally stiff (cabinets bolted together in the line) so movement would be minimal and would not adversely impact the function of the cabinet. Judged acceptable

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

Numerous partially open S-hooks identified.

It is unlikely that the lights would become disengaged since the hooks are only partially open and not all hooks are open -judged acceptable.

IR 1397693 written to inspect and fully close S-hooks.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 8/6/12 pm C-299 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.: 1PA09J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB PROT SYST SOL ST RX/ESF TRN A 0-3371 B AB1 Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos C-300 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 4 of 4 Status: M-I N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1PA09J Equipment Class: (20) Instrumentation and Control Panels and Cabinets pment

Description:

CAB PROT SYST SOL ST RX/ESF TRN A 0-3371 B ABI C-301 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.: 1PA10J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB PROT SYST SOL ST RX/ESF TRN B 0-3371B AB1 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?

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

Not Applicable

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

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

Yes C-302 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.: 1PA10J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB PROT SYST SOL ST RX/ESF TRN B 0-3371B AB1 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Yes Cabinets are bolted together 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?

Numerous partially open S-hooks identified.

It is unlikely that the lights would become disengaged since the hooks are only partially open and not all hooks are open -judged acceptable.

IR 1397693 written to inspect and fully close S-hooks.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-303 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.: 1PA10J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB PROT SYST SOL ST RX/ESF TRN B 0-3371B AB1 Photos C-304 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.: 1PA12J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB TEST SAFEGUARD TRN B AB1 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?

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

Yes C-305 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. I Correspondence No.: RS-12-161 Sheet 2 of 3 Status: M N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1PA12J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB TEST SAFEGUARD TRN B AB1 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Bolted to Panel 1PA I OJ on the exterior to eliminate spatial interaction during a seismic event.The gap between Panel 1PA12J and 1PA54J approximately equal to 9/16".Per Calculation BYR99-091 Rev 3, required gap equals 0. 149" therefore the since the existing gap is larger, it is acceptable.

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

Numerous partially open S-hooks identified.

It is unlikely that the lights would become disengaged since the hooks are only partially open and not all hooks are open -judged acceptable.

IR 1397693 written to inspect and fully close S-hooks.9. Do attached lines have adequate flexibility to avoid damage?Yes Yes Yes 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-306 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.: 1PA12J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB TEST SAFEGUARD TRN B ABI Photos 1PA12J Byron 1 & 2 109 C-307 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.: 1PA14J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB ESF SEQ/ACT TRN B 0-3371B ABI 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-ne 1.. Is anchorage configuration verification required (i.e., is the item one of the 50%of SWEL items requiring such verification)?

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

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

Not Applicable

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

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

Yes C-308 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.: 1PA14J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB ESF SEQ/ACT TRN B 0-3371B AB1 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Yes Cabinets are bolted together 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?

Numerous partially open S-hooks identified.

It is unlikely that the lights would become disengaged since the hooks are only partially open and not all hooks are open -judged acceptable.

IR 1397693 written to inspect and fully close S-hooks.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-309 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.: 1PA14J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB ESF SEQ/ACT TRN B 0-3371B AB1 Photos-i rA -41 t~yron -i &~ 110 i C-310 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.: 1PA27J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB RELAY AUX SAFEGUARD TRN A 0-3371B AB1 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.Anchoraqge

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?

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

Yes C-311 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.: 1PA27J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB RELAY AUX SAFEGUARD TRN A 0-3371B AB1 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Yes Cabinets are bolted together 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?

Numerous partially open S-hooks identified.

It is unlikely that the lights would become disengaged since the hooks are only partially open and not all hooks are open -judged acceptable.

IR 1397693 written to inspect and fully close S-hooks.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-312 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.: 1PA27J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB RELAY AUX SAFEGUARD TRN A 0-3371B AB1 Photos C-313 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.: 1PA28J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB RELAY AUX SAFEGUARD TRN B 0-3371B AB1 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?

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

Not Applicable

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

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

Yes C-314 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.: 1PA28J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB RELAY AUX SAFEGUARD TRN B 0-3371B AB1 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Yes Cabinets are bolted together 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?

Numerous partially open S-hooks identified.

It is unlikely that the lights would become disengaged since the hooks are only partially open and not all hooks are open -judged acceptable.

IR 1397693 written to inspect and fully close'S-hooks.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-315 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.: 1PA28J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB RELAY AUX SAFEGUARD TRN B 0-3371B ABI Photos C-316 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.: 1 PA28J Equipment Class: (20) Instrumentation and Control Panels and Cabinets EauiDment

==

Description:==

CAB RELAY AUX SAFEGUARD TRN B 0-3371B AB1 C-317 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.: 1PA33J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

CAB CONT SYSTEM ESF 11 0-3371B AB1 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?

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

Not Applicable

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

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

Yes C-318 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.: 1PA33J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB CONT SYSTEM ESF 11 0-3371B AB1 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Cabinets are bolted together 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?

Numerous partially open S-hooks identified.

It is unlikely that the lights would become disengaged since the hooks are only partially open and not all hooks are open -judged acceptable.

IR 1397693 written to inspect and fully close S-hooks.9. Do attached lines have adequate flexibility to avoid damage?Yes Yes Yes 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse'seismic interaction effects?Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-319 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.: 1PA33J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB CONT SYSTEM ESF 11 0-3371B AB1 Photos C-320 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.: 1PA34J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB CONT SYSTEM ESF 12 0-3371B ABI 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?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.)

Not Applicable

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

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

Yes C-321 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.: 1PA34J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB CONT SYSTEM ESF 12 0-3371B AB1 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Adjacent cabinets are bolted together (1PAlOJ, 1PA34J, & IPA17J) 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?

Numerous partially open S-hooks identified.

It is unlikely that the lights would become disengaged since the hooks are only partially open and not all hooks are open -judged acceptable.

IR 1397693 written to inspect and fully close S-hooks.9. Do attached lines have adequate flexibility to avoid damage?Yes Yes Yes 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Yes Other Adverse Conditions

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

Comments Seismic walkdown team M. Delaney & P. Gazda 8/6/12 pm Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-322 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

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Description:==

1 PA34J (20) Instrumentation and Control Panels and Cabinets CAB CONT SYSTEM ESF 12 0-3371B AB1 Photos IFPetO'J DylUVI I IZ- I I V C-323 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.: 1PA51J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB HJTC RX VESSEL LEVEL CH A 0-3371B AB1 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 the50% N of SWEL items requiring such verification)?

0o 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?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.)

Not Applicable C-324 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: F71 N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1PA51J Equipment Class: (20) Instrumentation and Control Panels and Cabinets.Equipment

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Description:==

CAB HJTC RX VESSEL LEVEL CH A 0-3371B AB1 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

Anchorage on front of panel inspected since a panel ventilation grate prevented installation of cove molding. Weld is 2 1/4" in length at approximately 9" spacing. Drawing 6E-O-3391AJ Revision AF specified 1 1/2" at 9". Back was not visible. See discussion in Section 5 of report to address cove molding at anchorage detail. Anchorage is judged to be acceptable.

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

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

Numerous partially open S-hooks identified.

It is unlikely that the lights would become disengaged since the hooks are only partially open and not all hooks are open -judged acceptable.

IR 1397693 written to inspect and fully close S-hooks.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 8/6/12 pm C-325 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.: 1PA51J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB HJTC RX VESSEL LEVEL CH A 0-3371B AB1 Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 Photos None.C-326 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Status: FY] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1PA52J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB HJTC RX VESSEL LEVEL CH B 0-3371B AB1 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% 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 C-327 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 2 of 3 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: 1PA52J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB HJTC RX VESSEL LEVEL CH B 0-3371B AB1 6. Based on the above anchorage evaluations, is the anchorage free of Yes potentially adverse seismic conditions?

Anchorage on front of panel inspected since a panel ventilation grate prevented installation of cove molding. Weld is 2 1/4"in length at approximately 9" spacing. Drawing 6E-O-3391AJ Revision AF specified 1 1/2" at 9". Back was not visible. See discussion in Section 5 of report to address cove molding at anchorage detail. Anchorage is judged to be acceptable.

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?

Numerous partially open S-hooks identified.

It is unlikely that the lights would become disengaged since the hooks are only partially open and not all hooks are open -judged acceptable.

IR 1397693 written to inspect and fully close S-hooks.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 8/6/12 pm C-328 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.: 1PA52J Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

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Description:==

CAB HJTC RX VESSEL LEVEL CH B 0-3371B AB1 Evaluated by: Marlene Delaney Date: 10/5/2012 S/" A Philip Gazda 10/5/2012 Photos C-329 Byron Generating Station Unit 1 12Q0108.20-R-001 Rev. 1 Correspondence No.: RS-12-161 Sheet 1 of 3 Seismic Walkdown Checklist (SWC)Status: M N U Equipment ID No.: 1PI-0627 Equipment Class: (18) Instruments on Racks Equipment

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Description:==

SPEND FUEL PUMP DISCHARGE PRESSURE GAGE Project: Byron 1 SWEL Location (Bldg, Elev, Room/Area):

FH, 401.00 ft, ALL Manufacturer/Model:

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

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

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

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

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

Not Applicable Not Applicable Not Applicable

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

Instrument is securely attached to well-anchored rack Yes C-330 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.: IPI-0627 Equipment Class: (18) Instruments on Racks Equipment

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Description:==

SPEND FUEL PUMP DISCHARGE PRESSURE GAGE 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 8/9/12 am Evaluated by: Marlene Delaney Date: 10/5/2012 Philip Gazda 10/5/2012 C-331 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.: 1PI-0627 Equipment Class: (18) Instruments on Racks Equipment

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Description:==

SPEND FUEL PUMP DISCHARGE PRESSURE GAGE Photos 1PI-0627 Byron 1 & 2 8-9-12 052 C-332