ML18107A130
| ML18107A130 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 04/10/2018 |
| From: | Southern Nuclear Operating Co |
| To: | Office of New Reactors |
| Shared Package | |
| ML18107A128 | List: |
| References | |
| ND-18-0500 | |
| Download: ML18107A130 (5) | |
Text
U.S. Nuclear Regulatory Commission ND-18-0500 Enclosure 1 Page 1 of 5 Southern Nuclear Operating Company ND-18-0500 Vogtle Electric Generating Plant (VEGP) Unit 3 and Unit 4 Docket No.: 52-025 & 52-026 Completion Plan for Uncompleted ITAAC 3.3.00.07d.ll.b [Index Number 801]
U.S. Nuclear Regulatory Commission ND-18-0500 Enclosure 1 Page 2 of 5 ITAAC Statement Design Commitment 7.d) Physical separation is maintained between Class 1E divisions and between Class 1E divisions and non-Class 1E cables.
Inspections. Tests. Analvses Inspections of the as-built raceways that route Class 1E cables will be performed to confirmthat the separation between raceways that route Class 1E cables of different divisions, and between raceways that route Class 1E cables and raceways that route non-Class 1E cables is consistent with the following:
ii.b) Within other plant areas (limited hazard areas), the minimum separation is defined by one of the following:
1)The minimum vertical separation is 5 feet and the minimum horizontal separation is 3 feet.
2)The minimum vertical separation is 12 inches and the minimum horizontal separation is 6 inches for raceways containing only instrumentation and control and low-voltage power cables s 2/0 AWG. This minimumvertical separation is 3 inches for the configuration with a conduit above and crossing the open tray at an angle equal to or greater than 45 degrees.
3)The minimum vertical separation is 12inches andthe minimum horizontal separation is6 inches between a conduit and an open configurationfor low-voltage power cables greater than 2/0AWG but not greater than 750 kcmil. The vertical separation is 3 inches if a conduit is above and crossing an open tray at an angle equal to or greater than 45 degrees.
- 4) For configurations thatinvolve exclusively limited energy content cables (instrumentation and control), the minimum vertical separation is 1 inch and the minimum horizontai separation is 1 inch.
- 5) For configurations involving an enclosed raceway and an open raceway with low-voltage power cables, the minimum vertical separation is 1 inch if theenclosed raceway is below the open raceway.
- 6) Forconfiguration involving enclosed raceways, the minimum separationis 1 inch in both horizontal and vertical directions.
7)The minimum vertical separation is 1 inch andthe minimum horizontal separation is 1 inch for configurations with a non-safety conduit and a free airsafetycablewith low-voltage power cables and below.
Acceptance Criteria Results ofthe inspection will confirm thatthe separation between raceways that route Class 1E cables of different divisions, and between raceways that route Class 1E cables and raceways that route non-Class 1E cables is consistent with the following:
U.S. Nuclear Regulatory Commission ND-18-0500 Enclosure 1 Page 3 of 5 ii.b) Within other plant areas inside the non-radiologically controlled area ofthe auxiliary building (limited hazard areas), the separation meets one of the following:
- 1) The vertical separation is 5 feet or more and the horizontal separation is 3 feet or more.
- 2) The minimum vertical separation is 12 inches and the minimum horizontal separation is 6 inches for raceways containing only instrumentation and control and low-voltage power cables ^2/0 AWG. This minimum vertical separation may be reduced to 3 inches for the configuration with a conduit above and crossing the open tray at an angle equal to or greater than 45 degrees.
- 3) The minimum vertical separation is 12 inches and the minimum horizontal separation is 6 inches between a conduit and an open configuration for low-voltage power cables greater than 2/0 AWG but not greater than 750 kcmil. The vertical separation may be reduced to 3 inches ifa conduit is above and crossing an open tray at an angle equal to or greater than 45 degrees.
- 4) For configurations that involveexclusively limited energy content cables (instrumentation and control), the minimum vertical separation is 1 inch and the minimum horizontal separation is 1 inch.
- 5) For configurations that involvean enclosed raceway and an open raceway with low-voltage power cables, the minimum verticalseparation is 1 inch ifthe enclosed raceway is below the open raceway.
- 6) For configurations that involveenclosed raceways, the minimum vertical and horizontal separation is 1 inch.
- 7) The minimum vertical separation is 1 inch and the minimum horizontal separation is 1 inch for configurations with a non-safety conduit and a free air safety cable with low-voltage power cables and below.
ITAAC Completion Description Multiple ITAAC are performed to ensure that physical separation is maintained between Class 1E divisions and between Class 1E divisions and non-Class 1E cables. This ITAAC requires inspections of the as-built raceways that route Class IE cables and raceways that route non-Class 1E cables inside the non-radiologically controlled area of the auxiliary building to confirm that physical separation between raceways that route Class 1E cables of different divisions and between raceways that route Class 1E cables and raceways that route non-Class 1E cables meet the required separation distances. The Class 1E cables and raceways and non-Class 1E cables inside the non-radiologically controlled area of the auxiliary building are designed to be appropriately separated in accordance with APP-GW-E1-001 (Reference 1).
Installation Specifications provided to the constructor identifythe separation criteria, consistent with the ITAAC commitment.
Class 1E electrical cables and raceways are installed in accordance with design drawings, installation specifications issued for construction and work package requirements. Completed raceway installation, in-progress cable installation, and completed cable terminations are inspected to ensure the separation installation specifications are satisfied. Inspections are
U.S. Nuclear Regulatory Commission ND-18-0500 Enclosure 1 Page 4 of 5 performed in accordance with the Construction Quality Verification Program 26139-000-4MP-T81C-N7101 (Reference 2). The completed inspection records document the satisfactory separation between raceways that route Class 1E cables of different divisions, and between raceways that route Class 1E cables and raceways that route non-Class 1E cables.
Cable Separation Reports XXX (References 3 and 4) identify the inspection reports associated with the raceway separation inspections and confirm that the separation between raceways that route Class 1E cables of different divisions, and between raceways that route Class 1E cables and raceways that route non-Class 1E cables is consistent with the following:
Within other plant areas inside the non-radiologically controlled area of the auxiliary building (limited hazard areas), the separation meets one of the following:
- 1) The verticalseparation is 5 feet or more and the horizontalseparation is 3 feet or more.
- 2) The minimum vertical separation is 12 inches and the minimum horizontal separation is 6 inches for raceways containing only instrumentation and control and low-voltage power cables :S2/0 AWG. This minimum vertical separation may be reduced to 3 inches for the configuration with a conduit above and crossing the open tray at an angle equal to or greater than 45 degrees.
- 3) The minimum vertical separation is 12 inches and the minimum horizontal separation is 6 inches between a conduit and an open configuration for low-voltage power cables greater than 2/0 AWG but not greater than 750 kcmil. The vertical separation may be reduced to 3 inches ifa conduit is above and crossing an open tray at an angle equal to or greater than 45 degrees.
- 4) For configurations that involve exclusively limited energy content cables (instrumentation and control), the minimum vertical separation is 1 inch and the minimum horizontal separation is 1 inch.
- 5) For configurations that involve an enclosed raceway and an open raceway with low-voltage power cables, the minimum vertical separation is 1 inch ifthe enclosed raceway is below the open raceway.
- 6) Forconfigurations that involve enclosed raceways, the minimum vertical and horizontal separation is 1 inch.
- 7) The minimum vertical separation is 1 inch and the minimum horizontal separation is 1 inchfor configurations with a non-safety conduit and a free air safety cable with low-voltage power cables and below.
Exceptions are not included within the scope of this ITAAC and are addressed within the scope of ITAAC 3.3.00.07d.iii.b (Enclosure 2), ITAAC 3.3.00.07d.iv.b (Enclosure 3), or ITAAC 3.3.00.07d.v.b (Enclosure 4).
The Cable Separation Reports (References 3 and 4) are available for NRC inspection as part of the Unit 3 and Unit 4 ITAAC 3.3.00.07d.ii.b Completion Packages (References 5 and 6, respectively).
U.S. Nuclear Regulatory Commission ND-18-0500 Enclosure 1 Page 5 of 5 List of ITAAC Findings Inaccordance with plant procedures for ITAAC completion, Southern Nuclear Operating Company (SNC) performed a review ofall ITAAC findings and associated corrective actions.
This review found no relevant ITAAC findings associated with this ITAAC.
References ^available for NRG inspection)
- 1. APP-GW-E1-001, Electrical Systems Design Criteria 2.
26139-000-4MP-T81C-N7101, Bechtel Construction Quality Verification Program 3.
Unit3 Cable Separation Report XXX 4.
Unit 4 Cable Separation Report XXX 5.
Unit 3 ITAAC 3.3.00.07d.ii.b Completion Package 6.
Unit 4 ITAAC 3.3.00.07d.ii.b Completion Package
- 7. NEI 08-01, "Industry Guideline for the ITAAC Closure Process Under 10 CFR Part 52"