ML18194A697
| ML18194A697 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 07/11/2018 |
| From: | Southern Nuclear Operating Co |
| To: | Office of New Reactors |
| Shared Package | |
| ML18194A695 | List: |
| References | |
| ND-18-0814 | |
| Download: ML18194A697 (5) | |
Text
U.S. Nuclear Regulatory Commission ND-18-0814 Enclosure 1 Page 1 of 5 Southern Nuclear Operating Company ND-18-0814 Vogtle Electric Generating Plant (VEGP) Unit3 and Unit4 Docket No.: 52-025 & 52-026 Completion Plan for Uncompleted ITAAC 3.3.00.07d.ii.b [Index Number801]
U.S. Nuclear Regulatory Commission ND-18-0814 Enclosure 1 Page 2 of 5 ITAAC Statement Desion Commitment 7.d) Physical separation is maintained between Class 1Edivisions and between Class 1E divisions and non-Class 1E cables.
Insoections. Tests. Analvses Inspections ofthe as-built raceways that route Class 1Ecables will be performed to confirm that the separation between raceways that route Class 1Ecables ofdifferent divisions, and between raceways that route Class 1Ecablesand raceways that route non-Class 1Ecables isconsistent with the following:
ii.b) Within otherplant areas (limited hazardareas), the minimum separation is defined byone of the following:
1)The minimum vertical separation is5 feet and the minimum horizontal separation is 3 feet.
2)The minimum vertical separation is 12 inchesand the minimum horizontal separation is 6 inches for raceways containing only instrumentation and control and low-voltage power cables 2 2/0 AWG. This minimum verticalseparation is 3 inches for the configuration with a conduitabove and crossing the open tray at an angle equal to or greater than 45 degrees.
3)The minimum vertical separation is12 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 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 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 involving an enclosed raceway and an open raceway with low-voltage power cables, the minimum vertical separation is1 inch if the enclosed raceway is below the open raceway.
- 6) For configuration involving enclosed raceways, the minimum separation is 1 inch in both horizontal and vertical directions.
7)The minimum vertical separation is1 inch andthe minimum horizontal separation is 1 inch for configurations with a non-safety conduit and a free airsafetycable with low-voltage power cables and below.
Acceotance Criteria Results of the 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-18-0814 Enclosure 1 Page 3 of 5 ii.b) Within otherplant areas inside the non-radiologically controlled area ofthe auxiliary building (limited hazard areas), the separation meets one ofthe following; 1)Thevertical separation is5 feetor more and the horizontal separation is3 feetor more.
2)Theminimum vertical separation is12inches andthe minimum horizontal separation is 6 inches for raceways containing onlyinstrumentation and control and low-voltage power cables ^2/0 AWG. This minimumvertical separation may be reduced to 3 inches for the configuration with a conduit above and crossing the open trayat an angle equalto or greater than 45 degrees.
3)The minimum vertical separation is 12inches 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 butnotgreater than 750 kcmil. The vertical separation may be reducedto 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 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 if the enclosed raceway is below the open raceway.
- 6) For configurations thatinvolve enclosed raceways, the minimum vertical and horizontal separation is 1 inch.
7)Theminimum vertical separation is1 inch andthe minimum horizontal separation is 1 inch forconfigurations with a non-safety conduit and a free airsafetycable with low-voltage power cables and below.
ITAAC Completion Description Multiple ITAAC are performed toensure that physical separation ismaintained between Class 1E divisions and between Class 1E divisions and non-Class 1E cables. This ITAAC requires inspections ofthe as-built raceways that route Class 1Ecablesand raceways that route non-Class 1E cables inside the non-radiologically controlled area ofthe auxiliary building to confirm that physical separation between raceways that route Class 1Ecables ofdifferent divisions and between raceways that route Class 1Ecables and raceways that route non-Class 1Ecables meet the required separation distances. The Class 1Ecables and raceways and non-Class 1E cables inside the non-radiologically controlled area ofthe auxiliary building are designed to beappropriately separated In accordance with APP-GW-E1-001 (Reference 1).
Installation specifications provided tothe constructor identify the separation criteria, consistent with the ITAAC commitment.
Class 1E electrical cables and raceways are installed inaccordance with design drawings, installation specifications issued for construction andwork package requirements. Completed raceway installation, in-progress andcompleted cable installation, andcompleted cable terminations are inspected to ensure the separation installation specifications are satisfied.
U.S. Nuclear Regulatory Commission ND-18-0814 Enclosure 1 Page 4 of 5 Inspections are performed inaccordance with the Construction Quality Verification Program 26139-000-4MP-T81C-N7101 (Reference 2). The completed inspection records document the satisfactory separation between racewaysthat routeClass 1E cables ofdifferent divisions, and between racewaysthat route Class 1E cables and raceways that route non-Class 1E cables.
Cable Separation Reports XXX (References3 and 4) identify the inspection reportsassociated with the raceway separation inspections and confirm that the separation between racewaysthat 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 plantareas insidethe 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 inchesand the minimum horizontal separation is 6 inches for raceways containingonlyinstrumentation and control and low-voltage power cables <2/0 AWG. This minimumvertical separation may be reduced to 3 inches for the configuration with a conduit above and crossingthe open trayat an angle equal to or greater than 45 degrees.
- 3) The minimum vertical separation is 12 inchesand 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 if a conduit is above and crossing an open tray at an angle equal to or greater than 45 degrees.
- 4) Forconfigurations that involve exclusively limited energycontent cables (instrumentation and control), the minimum vertical separation is 1 inchand the minimum horizontal separation is 1 inch.
- 5) Forconfigurations that involve an enclosed raceway and an open raceway with low-voltage power cables, the minimum vertical separation is 1 inch if the enclosed raceway is below the open raceway.
- 6) For configurations 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 separationis 1 inch forconfigurations with a non-safetyconduit and a free air safety cable with low-voltage power cables and below.
Exceptions are not included within the scope ofthis ITAAC and are addressed within the scope of IT/WC 3.3.00.07d.iii.b (Enclosure 2), IT/WC 3.3.00.07d.iv.b (Enclosure 3), or ITAAC 3.3.00.07d.v.b (Enclosure 4).
TheCable Separation Reports (References 3 and 4)are available for NRC inspection as partof the Unit3 and Unit 4 IT/\\AC3.3.00.07d.ii.b Completion Packages (References 5 and 6, respectively).
U.S. Nuclear Regulatory Commission ND-18-0814 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 of all ITAAC findings and associated corrective actions.
This review found no relevant ITAAC findings associated with this ITAAC.
References favaiiabie for NRG inspection)
- 1. APP-GW-E1 -001, Electrical Systems Design Criteria 2.
26139-000-4MP-T81C-N7101, Bechtel Construction Quality Verification Program 3.
Unit 3 Cable Separation Report XXX 4.
Unit 4 Cable Separation Report XXX 5.
3.3.00.07d.ii.b-U3-CP-Rev0, ITAAC Completion Package 6.
3.3.00.07d.ii.b-U4-CP-Rev0, ITAAC Completion Package
- 7. NEI 08-01, "Industry Guideline forthe ITAAC Closure Process Under 10CFR Part 52"