ML18089A580

Korea Hydro & Nuclear Power Co., Ltd - Response to RAI 357-8344 for the Question 06.02.04-11 (Rev.3)

ML18089A580
Person / Time
Site:	05200046
Issue date:	03/30/2018
From:	Korea Hydro & Nuclear Power Co, Ltd
To:	Office of New Reactors
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ML18089A578	List: ML18089A579 ML18089A580
References
MKD/NW-18-0050L
Download: ML18089A580 (5)

Text

06.02.04-11_Rev.3 - 1 / 2 KEPCO/KHNP REVISED RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION APR1400 Design Certification Korea Electric Power Corporation / Korea Hydro & Nuclear Power Co., LTD Docket No.52-046 RAI No.: 357-8344 SRP Section: 06.02.04 - Containment Isolation System Application Section: 6.2.4 Date of RAI Issue: 01/05/2016 Question No. 06.02.04-11 Describe inspections, tests, analyses and acceptance criteria (ITAAC) for verification of containment isolation valve (CIV) placement 10 CFR 52.47(b)(1) requires that a DC application contain the proposed ITAAC that are necessary and sufficient to provide reasonable assurance that, if the inspections, tests, and analyses are performed and the acceptance criteria met, a plant that incorporates the design certification is built and will operate in accordance with the design certification.

DCD Tier 1, Table 2.11.3-2 Containment Isolation System ITAAC, provides the ITAAC for the CIVs. How will this ITAAC, as written, ensure that the supplied as-built piping distances from the outer CIV to the containment will be such that the valves are located as close to containment as practical? (i.e. describe any inspections, tests, or acceptance criteria which will confirm that the as built piping distances will not exceed those listed in DCD Tier 2, Table 6.2.4-1).

In addition, indicate the associated containment penetration numbers in DCD Tier 1, Table 2.11.3-1 "Containment Isolation System Component List."

Response - (Rev. 3)

GDCs 55, 56, and 57 require that isolation valves outside containment should be located as close to containment as practical. The APR1400 design has incorporated this design concept into the location of the containment isolation valves and has reflected the locations in the piping analyses performed. However, in applying the graded approach for piping design and analysis, only specific piping lines that penetrate containment are in the scope of the program and are required to be analyzed. Acceptable containment isolation valve location is assured through the overall design and piping analysis program. The length of pipe between containment and the outboard isolation valve indicated in DCD Tier 2, Table 6.2.4-1 does not necessarily represent a bounding condition for each piping line listed. However, in order to document this item during the design/construction phase, an ITAAC has been added to DCD Tier 1, Table 2.11.3-2 as

06.02.04-11_Rev.3 - 2 / 2 KEPCO/KHNP shown in Attachment . Additionally, the pipe length from an operational plant has been provided in DCD Tier 2, Revision 2, Table 6.2.4-1 as a reference and is subject to change during the detailed design phase.

The changes to the DCD made in the response to the RAI 306-8240 Question 06.02.06-9 and RAI 357-8344 Question 06.02.04-9 have been addressed in DCD Tier 2, Revision 1, Table 6.2.4-1. However, incorrect information in item nos. 48, 49, 50, 55, 161, 162, 163 in DCD Tier 2, Table 6.2.4-1 have been identified and corrected in DCD Tier 2, Revision 2.

Containment penetration numbers have been added in DCD Tier 1, Revision 1, Table 2.11.3-1 according to the response to the RAI 357-8344 Question 06.02.04-11, Revision 0. However, some incorrect information regarding valves FW-V132, IA-V0020, PS-V0032, PS-V0258, and WI-V0015 have been identified and corrected in DCD Tier 1, Revision 2. Finally, the missing valves VQ-V2014, VQ-V2016, and VQ-V2024 have been added in DCD Tier 1, Revision 2, Table 2.11.3-1.

Impact on DCD DCD Tier 1, Table 2.11.3-2 will be revised as shown in the attachment to this response.

- DCD Tier 1, Table 2.11.3-2 (Attachment )

Impact on PRA There is no impact on the PRA.

Impact on Technical Specifications There is no impact on the Technical Specifications.

Impact on Technical/Topical/Environmental Reports There is no impact on any Technical, Topical, or Environmental Report.

RAI 357-8344- Question 06.02.04-11_Rev.2 RAI 357-8344 - Question 06.02.04-11_Rev. Attachment (1/3)

APR1400 DCD TIER 1

11. MOVs, AOVs, SOVs, E/H valves located inside and outside the containment in series on the same penetration are powered from different Class 1E divisions.

2.11.3.2 Inspections, Tests, Analyses, and Acceptance Criteria The inspection, tests, analyses, and associated acceptance criteria for the CIAS are specified in Table 2.11.3-2.

12. Containment isolation valves outside the containment as listed in Table 2.11.3-1 and as shown in Figure 2.11.3-1, are located as close to the containment as practical, consistent with General Design Criteria 55, 56, and 57.

2.11-24 Rev. 2

RAI 357-8344- Question 06.02.04-11_Rev.2 RAI 357-8344 - Question 06.02.04-11_Rev. Attachment (2/3)

APR1400 DCD TIER 1 Table 2.11.3-2 (6 of 6)

Design Commitment Inspections, Tests, Analyses Acceptance Criteria

11. MOVs, AOVs, SOVs, E/H 11. Inspection of the MOVs, 11. The following MOVs, valves located inside and AOVs, SOVs, E/H valves AOVs, SOVs, E/H valves outside the containment in located inside and outside located inside and outside series on the same the containment in series on the containment in series on penetration are powered the same penetration will be the same penetration are from different Class 1E performed. powered from different divisions. Class 1E divisions.

Inside Outside containment containment CC-V0249(MOV) CC-V0250(MOV)

CC-V0297(MOV) CC-V0296(MOV)

CC-V0301(MOV) CC-V0302(MOV)

CV-V506(AOV) CV-V505(AOV)

CV-V522(AOV) CV-V523(AOV)

CV-V560(AOV) CV-V561(AOV)

DE-V0005(MOV) DE-V0006(AOV)

GW-V0001(MOV) GW-V0002(SOV)

PR-V431(MOV) PR-V432(MOV)

PX-V0001(SOV) PX-V0002(SOV)

PX-V0003(SOV) PX-V0004(SOV)

PX-V0005(SOV) PX-V0006(SOV)

PX-V0021(SOV) PX-V0020(SOV)

PX-V0041(MOV) PX-V0042(MOV)

SI-V653(MOV) SI-V655(MOV)

SI-V654(MOV) SI-V656(MOV)

VQ-V0012(MOV) VQ-V0011(E/H)

VQ-V0013(MOV) VQ-V0014(E/H)

VQ-V0032(AOV) VQ-V0031(AOV)

VQ-V0033(AOV) VQ-V0034(AOV)

WI-V0015(MOV) WI-V0012(AOV)

Insert No. 12 2.11-49 Rev. 2

RAI 357-8344- Question 06.02.04-11_Rev.2 RAI 357-8344 - Question 06.02.04-11_Rev. Attachment (3/3)

RAI 357-8344 - Question 06.02.04-11_Rev.3 No. 12 A report exists and concludes that the Design Commitment Inspections, Tests, Analyses Acceptance Criteria

12. Containment isolation 12. An inspection will be 12. The as-built outside valves outside the performed to verify the containment isolation containment as listed in as-built location of valves listed in Table Table 2.11.3-1 and as outside containment 2.11.3-1 and shown in shown in Figure 2.11.3-1, isolation valves. Figure 2.11.3-1 are are located as close to the located as close to the containment as practical, or analysis containment as practical consistent with General with consideration of the Design Criteria 55, 56, following:

and 57.

Access for inspection of welds Containment leak testing Replacement Valve maintenance