ML13126A188

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Seismic Walkdown Report in Response to 50.54(f) Information Request Re Fukushima Near-Term Task Force Recommendation 2.3: Seismic, Updated Transmittal #1 (Annex a) for Dresden, Unit 3, Report No. RS-13-06, Part 8 of 13
ML13126A188
Person / Time
Site: Dresden Constellation icon.png
Issue date: 03/28/2013
From: Ali E H
Exelon Generation Co
To:
Office of Nuclear Reactor Regulation
References
RS-12-167, RS-13-067 12Q0108.30-R-002, Rev. 2
Download: ML13126A188 (52)
v • d • e


Text

Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 1 of 8 Status: F-] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7838-1-1--P06 Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

DISTRIBUTION PANELS/ Distribution Panel 38-1-1 Project: Dresden 3 SWEL Location (Bldg, Elev, Room/Area):

Reactor, 517.50 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)?

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

4. Is the anchorage free of visible cracks in the concrete near the anchors?Yes Yes Minor shrinkage cracks in floor judged to be acceptable.
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.)

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

Yes C-460 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 2 of 8 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7838-1-1--P06 Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

DISTRIBUTION PANELS/ Distribution Panel 38-1-1 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?

Emergency light adequately restrained.

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 SEWS Anchorage Notes: Panel bolted in each comer to Unistrut.

The unistrut is bolted to the wall with three 3/8" shell expansion anchors on each side.Seismic Walkdown Team: J. Griffith & M. Wodarcyk -8/1/2012 Evaluated by: "ITO James Griffith Date: 9/30/2012 Michael Wodarcyk 9/30/2012 C-461 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 3 of 8 Status: 7 N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7838-1-1-P06 Equipment Class: (20) Instrumentation and Control Panels and Cabinets Equipment

==

Description:==

DISTRIBUTION PANELS/ Distribution Panel 38-1-1 C-462 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 4 of 8 Status: [Y N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: D03-7838-1 P06 (20) Instrumentation and Control Panels and Cabinets L%C-463 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 5 of 8 Status: Y N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7838-1-1-P06 Equipment Class: (20) Instrumentation and Control Panels and Cabinets C-464 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 6 of 8 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7838-1-1-P06 Equipment Class: (20) Instrumentation and Control Panels and Cabinets L,'C-465 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 7 of 8 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7838-1-1-P06 Equipment Class: (20) Instrumentation and Control Panels and Cabinets EL C-466 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 8 of 8 Status: FYj N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7838-1-1--P06 Equipment Class: (20) Instrumentation and Control Panels and Cabinets EEL C-467 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 1 of 8 Status: FY] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7838-2

M05 Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

480V AC/ MCC 38-2 Project: Dresden 3 SWEL Location (Bldg, Elev, Room/Area):

Turbine, 538.00 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)?

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

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors?Yes Minor shrinkage cracks in floor judged acceptable.

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.)

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

Yes C-468 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 2 of 8 Status: FYI N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7838-2

M05 Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

480V AC/ MCC 38-2 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?

Overhead light fixtures are judged acceptable.

9. Do attached lines have adequate flexibility to avoid damage?10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Yes Yes Yes Yes Other Adverse Conditions
11. Have you looked for and found no adverse seismic conditions that could Yes adversely affect the safety functions of the equipment?

Comments SEWS Anchorage Notes: MCC stitch welded to edge angle embedded in concrete.Seismic Walkdown Team: J. Griffith & M. Wodarcyk -7/31/2012 Evaluated by: < James Griffith Date: 9/30/2012 J ' Michael Wodarcyk 9/30/2012 C-469 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 3 of 8 Status: F] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7838-2---M05 Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

480V AC/ MCC 38-2 Photos C-470 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 4 of 8 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: D03-7838-2--M05 (1) Motor Control Centers C-471 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 5 of 8 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7838-2--M05 Equipment Class: (1) Motor Control Centers C-472 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 6 of 8 Status: EYI N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7838-2--M05 Equipment Class: (1) Motor Control Centers C-473 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 7 of 8 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7838-2---M05 Equipment Class: (1) Motor Control CentersDecrintion:

480V AC/ MCC 38-2 C-474 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 8 of 8 Status: F-ý N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: D03-7838-2---M05 (1) Motor Control Centers C-475 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 1 of 7 Status: FYI N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7839-2

M05 Equipment Class: (1) Motor Control Centers Eauioment

==

Description:==

480V AC/ MCC 39-2 Project: Dresden 3 SWEL Location (Bldg, Elev, Room/Area):

Turbine, 534.00 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)?

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

Yes 4. Is the anchorage free of visible cracks in the concrete near the anchors?Yes Minor shrinkage cracks in floor judged to be acceptable.

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.)

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

Yes C-476 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 2 of 7 Status: EYiI N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7839-2

M05 Equipment Class: (1) Motor Control Centers EauiDment DescriDtion:

480V AC/ MCC 39-2 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Adjacent MCC 35-1 is judged to be adequately attached via intermittent welds to base pedestal.Bottom of one door at back of MCC is slightly askew. Door is adequately latched and judged to be 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 SEWS Anchorage Notes: MCC stitch welded to edge angle embedded in concrete.Seismic Walkdown Team: J. Griffith & M. Wodarcyk -7/31/2012 Evaluated by: APO James Griffith Date: 9/30/2012 Michael Wodarcyk 9/30/2012 C-477 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 3 of 7 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7839-2--M05 Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

480V AC/ MCC 39-2 C-478 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 4 of 7 Status: r N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7839-2--M05 Equipment Class: (1) Motor Control Centers C-479 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 5 of 7 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7839-2--M05 Equipment Class: (1) Motor Control Centers Eauinment Descrintion:

480V AC/ MCC 39-2 C-480 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 6 of 7 Status: F- N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7839-2--M05 Equipment Class: (1) Motor Control Centers inmAntl npfrintinn:

4A(V Ar/ M"r 19-2 C-481 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 7 of 7 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-7839-2---M05 Equipment Class: (1) Motor Control Centers C-482 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 1 of 6 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8300--3A--B05 Equipment Class: (16) Battery Chargers and Inverters Equipment

==

Description:==

125V DC/ Battery Charger #3A Project: Dresden 3 SWEL Location (Bldg, Elev, Room/Area):

Turbine, 538.00 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-483 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 2 of 6 Status: T N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8300--3A--B05 Equipment Class: (16) Battery Chargers and Inverters Equipment

==

Description:==

125V DC/ Battery Charger #3A 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?

Overhead light fixtures judged acceptable.

9. Do attached lines have adequate flexibility to avoid damage?10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Yes Yes Yes Yes Other Adverse Conditions
11. Have you looked for and found no adverse seismic conditions that could Yes adversely affect the safety functions of the equipment?

Comments Seismic Walkdown Team: J. Griffith & M. Wodarcyk -7/31/2012 Evaluated by: James Griffith Date: 9/30/2012 Michael Wodarcyk 9/30/2012 C-484 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 3 of 6 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment

==

Description:==

D03-8300--3A--B05 (16) Battery Chargers and Inverters 125V DC/ Battery Charger #3A C-485 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 4 of 6 Status: [-7 N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8300--3A--B05 Equipment Class: (16) Battery Chargers and Inverters C-486 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 5 of 6 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8300--3A--B05 Equipment Class: (16) Battery Chargers and Inverters C-487 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 6 of 6 Status: EYZI N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8300--3A--B05 Equipment Class: (16) Battery Chargers and Inverters C-488 Dresden Generating Station Unit 3 12QO108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 1 of 6 Status: FYI N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8300--3---B05 Equipment Class: (16) Battery Chargers and Inverters Eauioment DescriDtion:

125V DC/BatteryCharaer

  1. 3 Project: Dresden 3 SWEL Location (Bldg, Elev, Room/Area):

Turbine, 538.00 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 Minor shrinkage cracks in floor judged to be acceptable.

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-489 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 2 of 6 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8300--3---B05 Equipment Class: (16) Battery Chargers and Inverters EauiDment

==

Description:==

125V DC/ Battery Charqer #3 Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

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

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

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

Comments Seismic Walkdown Team: J. Griffith & M. Wodarcyk -7/30/2012 Evaluated by: '# James Griffith Date: 9/30/2012 Michael Wodarcyk 9/30/2012 C-490 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 3 of 6 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: EauiDment

==

Description:==

D03-8300--3--B05 (16) Battery Chargers and Inverters 125V DC/ Battery Charger #3 Photos C-491 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 4 of 6 Status: Y-] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8300--3--B05 Equipment Class: (16) Battery Chargers and Inverters C-492 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 5 of 6 Status: F] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8300--3--B05 Equipment Class: (16) Battery Chargers and Inverters C-493 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 6 of 6 Status: r-Z N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8300--3--B05 Equipment Class: (16) Battery Chargers and Inverters C-494 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 1 of 7 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8300--BC-B04 Equipment Class: (15) Batteries on Racks Equipment

==

Description:==

125V DC/ Battery #3, Feed to TB Battery Bus #3 Project: Dresden 3 SWEL Location (Bldg, Elev, Room/Area):

Turbine, 551.00 ft, ALL Manufacturer/Model:

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

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

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

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.)

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

Yes C-495 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 2 of 7 Status: IY7 N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8300--BC--B04 Equipment Class: (15) Batteries on Racks Equipment

==

Description:==

125V DC/ Battery #3, Feed to TB Battery Bus #3 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?, Overhead light fixtures and trolley hoist and beam judged acceptable.
9. Do attached lines have adequate flexibility to avoid damage?10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?Yes Yes Yes Yes Other Adverse Conditions
11. Have you looked for and found no adverse seismic conditions that could Yes adversely affect the safety functions of the equipment?

Comments Seismic Walkdown Team: J. Griffith & M. Wodarcyk -7/31/2012 Each post leg is through-bolted to an angle iron clip, which is anchored by one 3/8 inch concrete expansion anchor to the concrete floor in accordance with Drawing B-1893, Rev. D.Evaluated by: A James Griffith Date: 9/30/2012 Michael Wodarcyk 9/30/2012 C-496 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 3 of 7 Status: r-ý N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: Equipment DescriDtion:

D03-8300--BC-B04 (15) Batteries on Racks 125V DC/ Battery #3, Feed to TB Battery Bus #3 Photos C-497 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 4 of 7 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: Equipment Class: D03-8300.--BC-B04 (15) Batteries on Racks Fe C-498 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 5 of 7 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8300--BC-B04 Equipment Class: (15) Batteries on Racks C-499 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 6 of 7 Status: [Y- N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8300-BC-B04 Equipment Class: (15) Batteries on Racks C-500 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 7 of 7 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8300--BC-B04 Equipment Class: (15) Batteries on Racks Eauioment Deson~tion:

125V DC/ Batterv #3. Feed to TB Battery Bus #3 C-501 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 1 of 5 Status: FY] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8303A

M05 Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

250V DC/ MCC Bus #3A (ROB-RB MCC #3)Project: Dresden 3 SWEL Location (Bldg, Elev, Room/Area):

Reactor, 570.00 ft, ALL Manufacturer/Model:

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

Additional space is provided at the end of this checklist for documenting other comments.Anchora-ge

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

Yes Yes 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?

Yes 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.)

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

C-502 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 2 of 5 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8303A

M05 Equipment Class: (1) Motor Control Centers Equipment

==

Description:==

250V DC/ MCC Bus #3A (ROB-RB MCC #3)Interaction Effects 7. Are soft targets free from impact by nearby equipment or structures?

Western-most door on back of MCC has a minor misalignment at the hinge.Door is adequately latched and judged to be 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 SEWS Anchorage Notes: MCC stitch welded to edge angle embedded in concrete.Seismic Walkdown Team: J. Griffith & M. Wodarcyk -8/2/2012 Evaluated by: James Griffith Date: 10/24/2012 Michael Wodarcyk 10/24/2012 C-503 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 3 of 5 Status: FY-] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8303A

M05 Equipment Class: (1) Motor Control Centers Eauipment

==

Description:==

250V DC/ MCC Bus #3A (ROB-RB MCC #3)Photos 20120802-Dresden-3 004 C-504 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 4 of 5 Status: [-ý N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8303A----M05 Equipment Class: (1) Motor Control Centers#3A C-505 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 5 of 5 Status: N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8303A...-MO5 Equipment Class: (1) Motor Control Centers#3A C-506 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 1 of 5 Status: FY-] N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8303B---M05 Equipment Class: (1) Motor Control Centers Eauil~ment Descdrition:

250V DC/ MCC Bus #3B (ROB-RB MCC #3)Project: Dresden 3 SWEL Location (Bldg, Elev, Room/Area):

Reactor, 570.00 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?Yes 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.)

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

Yes C-507 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 2 of 5 Status: F N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8303B

M05 Equipment Class: (1) Motor Control Centers Equipment

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Description:==

250V DC/ MCC Bus #3B (ROB-RB MCC #3)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?

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

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

Comments SEWS Anchorage Notes: MCC stitch welded to edge angle embedded in concrete.Seismic Walkdown Team: J. Griffith & M. Wodarcyk -8/2/2012 Evaluated by: 1 4 1 James Griffith Date: 9/30/2012 Michael Wodarcyk 9/30/2012 C-508 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 3 of 5 Status: F- N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8303B--M05 Equipment Class: (1) Motor Control Centers Equipment

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Description:==

250V DC/ MCC Bus #3B (ROB-RB MCC #3)C-509 Dresden Generating Station Unit 3 12Q0108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 4 of 5 Status: [Y N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8303B...-MO5 Equipment Class: (1) Motor Control Centers#313 20120802-Dresden-3 024 C-510 Dresden Generating Station Unit 3 12QO108.30-R-002, Rev. 2 Correspondence No.: RS-12-167 Sheet 5 of 5 Status: [-ý N U Seismic Walkdown Checklist (SWC)Equipment ID No.: D03-8303B--M05 Equipment Class: (1) Motor Control Centers is #3B C-511

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