ML18191B341
| ML18191B341 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 07/09/2018 |
| From: | Southern Nuclear Operating Co |
| To: | Office of New Reactors |
| Shared Package | |
| ML18191B337 | List: |
| References | |
| ITAAC 3.3.00.07d.iv.a, ND-18-0813 | |
| Download: ML18191B341 (3) | |
Text
U.S. Nuclear Regulatory Commission ND-18-0813 Enclosure 3 Page 1 of 3 Southern Nuclear Operating Company ND-18-0813 Vogtle Electric Generating Plant (VEGP) Unit3 and Unit4 Docket No.: 52-025 & 52-026 Completion Plan for Uncompleted ITAAC 3.3.00.07d.iv.a[Index Number 806]
U.S. Nuclear Regulatory Commission ND-18-0813 Enclosure 3 Page 2 of 3 ITAAC Statement Desion Commitment 7.d) Physicalseparation is maintained between Class 1E divisionsand between Class 1E divisions and non-Class 1E cables.
Insoections. Tests. Analvses Inspections ofthe as-built racewaysthat route Class 1E cables will be performed to confirm that the separation between raceways that route Class 1E cables ofdifferent divisions, and between racewaysthat routeClass 1E cables and racewaysthat route non-Class1Ecables is consistent with the following:
iv) Separation distances less than those specified above and not run in enclosed racewaysor provided with barriers are based on analysis Acceptance Criteria Results ofthe inspection will 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:
iv.a) For areas inside containment, a report exists andconcludes thatseparation distances less than those specified above and not provided with enclosed racewaysor barriershave been analyzed.
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. In accordance with this ITAAC, separation distances for circuits thatdo notmeetthe criteria ofITAAC 3.3.00.07d.ii.a or ITAAC 3.3.00.07d.iii.a may be based on analyses. Forcircuits that have separation distances based on analyses, the subject ITAAC requires inspections to confirm thatseparation distances have been analyzed. TheClass 1Ecablesand raceways and non-Class1 Ecables inside containment are designedto be appropriately separated in accordancewith APP-GW-E1-001 (Reference 1). Installation specifications provided totheconstructor identify 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 and completed cableinstallation, and completed cable terminations are inspectedto ensure the separation installation specifications are satisfied.
Inspections are performed in accordance with the Construction Quality Verification Program 26139-000-4MP-T81C-N7101 (Reference2).The completed inspection recordsdocument the satisfactory separation between raceways that route Class1Ecablesof different divisions, and between raceways that route Class 1Ecablesand raceways that route non-Class 1Ecables.
Cable Separation Reports XXX (References 3 and4) identify the inspection reports associated with the raceway separation inspections and confirm thatthe separation between raceways that
U.S. Nuclear Regulatory Commission ND-18-0813 Enclosure 3 Page 3 of 3 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:
For areas inside containment, separation distances less than those specified above and not run in enclosed raceways or provided with barriersare based on analysis. The analyses performed for this ITAAC are performed inaccordance with standard IEEE 384, and demonstrate that the effects of lesser separation do not impact the ability ofClass 1E circuits to perform theirsafety related functions.
Exceptions to the subject ITAAC are notincluded within the scope ofthis ITAAC and are addressed within the scope of ITAAC 3.3.00.07d.v.a (Enclosure 4).
TheCable Separation Reports (References 3 and4)are available for NRC inspection as part of the Unit 3 and Unit4 ITAAC 3.3.00.07d.iv.a Completion Packages (References 5 and 6, respectively).
List of ITAAC Findings In accordancewith plant procedures for ITAAC completion. Southern Nuclear Operating Company (SNC) performed a review of all ITAAC findings andassociated corrective actions.
This reviewfound no relevant ITAAC findings associated withthis ITAAC.
References favailabie for NRC 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.
Unit4 Cable Separation Report XXX 5.
3.3.00.07d.iv.a-U3-CP-Rev0, ITAAC Completion Package 6.
3.3.00.07d.iv.a-U4-CP-Rev0, ITAAC Completion Package
- 7. NEI 08-01, "Industry Guideline for the ITAAC Closure Process Under 10CFR Part 52"