ML18198A460

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2018/07/17 Vogtle COL Docs - ITAAC Index No. 700 Discussion
ML18198A460
Person / Time
Site: Vogtle  Southern Nuclear icon.png
Issue date: 07/17/2018
From:
NRC
To:
NRC/NRO/DLSE/LB4
References
Download: ML18198A460 (8)
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Text

Vogtle PEmails From: Hoellman, Jordan Sent: Tuesday, July 17, 2018 2:51 PM To: Vogtle PEmails

Subject:

ITAAC Index No. 700 Discussion Attachments: ITAAC 700 info for NRC.PDF; U3 APPENDIX C - 700.pdf Please see the attached discussion of an inconsistency on ITAAC Index No. 700 and relevant COL pages for discussion at a future public meeting.

The last 3 items in Table 2.7.1-3 are Ancillary Fans that have a specified Control Function to run (rather than start as the other do in the table). By design, those 3 specific fans do not have MCR displays and controls. SNC is proposing a definition/interpretation of run for this application only.

1

Hearing Identifier: Vogtle_COL_Docs_Public Email Number: 326 Mail Envelope Properties (SN6PR0901MB236649065529360E3160305CD55C0)

Subject:

ITAAC Index No. 700 Discussion Sent Date: 7/17/2018 2:50:50 PM Received Date: 7/17/2018 2:50:55 PM From: Hoellman, Jordan Created By: Jordan.Hoellman2@nrc.gov Recipients:

"Vogtle PEmails" <Vogtle.PEmails@nrc.gov>

Tracking Status: None Post Office: SN6PR0901MB2366.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 473 7/17/2018 2:50:55 PM ITAAC 700 info for NRC.PDF 47927 U3 APPENDIX C - 700.pdf 672473 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received:

ITAAC 700 The AC for ITAAC 2.7.01.14, item 12 [700], requires, Controls in the MCR operate to cause the components listed in Table 2.7.1-3 to perform the listed functions. ITAAC 700 is specific to VBS equipment. The design for three of the VBS fans listed in Table 2.7.1-3; MCR Ancillary Fans, Division B Room Ancillary Fan and Division C Room Ancillary Fan, by design, do not have MCR displays and controls. Per the system specification document, APP-VBS-M3-001, These devices are used for loss of offsite power beyond 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, are locally operated, powered by the ancillary diesel, and have no PLS interface, so have no interlock sheets. Also from Table 2.7.1-3, the Control Function for these three devices is Run, whereas for all other VBS devices the Control Function is Start.

Based on the design function of these ancillary VBS devices, SNC defines the Control Function Run as:

1. The ancillary fans are stored in their permanent design locations
2. The portable ductwork is stored in its permanent design locations
3. All mechanical and electrical connection points are verified and labeled
4. Operating procedure exists which controls connection and operation of the ancillary fans.
5. A FT is performed to demonstrate the functional capability of the ancillary fans.

Verification of Steps 1 thru 5 would satisfy the AC for the ancillary fans.

2.7 HVAC Systems 2.7.1 Nuclear Island Nonradioactive Ventilation System Design Description The nuclear island nonradioactive ventilation system (VBS) serves the main control room (MCR), control support area (CSA), Class 1E dc equipment rooms, Class 1E instrumentation and control (I&C) rooms, Class 1E electrical penetration rooms, Class 1E battery rooms, remote shutdown room (RSR), reactor coolant pump trip switchgear rooms, adjacent corridors, and passive containment cooling system (PCS) valve room during normal plant operation. The VBS consists of the following independent subsystems: the main control room/control support area HVAC subsystem, the class 1E electrical room HVAC subsystem, and the passive containment cooling system valve room heating and ventilation subsystem. The VBS provides heating, ventilation, and cooling to the areas served when ac power is available. The system provides breathable air to the control room and maintains the main control room and control support area areas at a slightly positive pressure with respect to the adjacent rooms and outside environment during normal operations. The VBS monitors the main control room supply air for radioactive particulate and iodine concentrations and provides filtration of main control room/control support area air during conditions of abnormal High-1 airborne radioactivity. In addition, the VBS isolates the HVAC penetrations in the main control room boundary on High-2 particulate or iodine radioactivity in the main control room supply air duct or on a loss of ac power for more than 10 minutes or if main control room differential pressure is below the Low setpoint for more than 10 minutes. The Sanitary Drainage System (SDS) also isolates a penetration in the main control room boundary on High-2 particulate or iodine radioactivity in the main control room supply air duct or on a loss of ac power for more than 10 minutes or if main control room differential pressure is below the Low setpoint for more than 10 minutes. Additional penetrations from the SDS and Potable Water System (PWS) into the main control room boundary are maintained leak tight using a loop seal in the piping, and the Waste Water System (WWS) is isolated using a normally closed safety related manual isolation valve. These features support operation of the main control room emergency habitability system (VES), and have been included in Tables 2.7.1-1 and 2.7.1-2.

The VBS is as shown in Figure 2.7.1-1 and the component locations of the VBS are as shown in Table 2.7.1-5.

1. The functional arrangement of the VBS is as described in the Design Description of this subsection 2.7.1.
2. a) The components identified in Table 2.7.1-1 as ASME Code Section III are designed and constructed in accordance with ASME Code Section III requirements.

b) The piping identified in Table 2.7.1-2 as ASME Code Section III is designed and constructed in accordance with ASME Code Section III requirements.

3. a) Pressure boundary welds in components identified in Table 2.7.1-1 as ASME Code Section III meet ASME Code Section III requirements.

b) Pressure boundary welds in piping identified in Table 2.7.1-2 as ASME Code Section III meet ASME Code Section III requirements.

C-367 Amendment No. 123

4. a) The components identified in Table 2.7.1-1 as ASME Code Section III retain their pressure boundary integrity at their design pressure.

b) The piping identified in Table 2.7.1-2 as ASME Code Section III retains its pressure boundary integrity at its design pressure.

5. The seismic Category I equipment identified in Table 2.7.1-1 can withstand seismic design basis loads without loss of safety function.
6. a) The Class 1E components identified in Table 2.7.1-1 are powered from their respective Class 1E division.

b) Separation is provided between VBS Class 1E divisions, and between Class 1E divisions and non-Class 1E cable.

7. The VBS and SDS provide the safety-related function to isolate the pipes that penetrate the MCR pressure boundary.
8. The VBS provides the following nonsafety-related functions:

a) The VBS provides cooling to the MCR, CSA, RSR, and Class 1E electrical rooms.

b) The VBS provides ventilation cooling to the Class 1E battery rooms.

c) The VBS maintains MCR and CSA habitability when radioactivity is detected.

d) The VBS provides ventilation cooling via the ancillary equipment in Table 2.7.1-3 to the MCR and the division B&C Class 1E I&C rooms.

9. Safety-related displays identified in Table 2.7.1-1 can be retrieved in the MCR.
10. a) Controls exist in the MCR to cause the remotely operated valves identified in Table 2.7.1-1 to perform their active functions.

b) The valves identified in Table 2.7.1-1 as having protection and safety monitoring system (PMS) control perform their active safety function after receiving a signal from the PMS.

11. After loss of motive power, the valves identified in Table 2.7.1-1 assume the indicated loss of motive power position.
12. Controls exist in the MCR to cause the components identified in Table 2.7.1-3 to perform the listed function.
13. Displays of the parameters identified in Table 2.7.1-3 can be retrieved in the MCR.
14. The background noise level in the MCR and RSR does not exceed 65 dB(A) when the VBS is operating.

C-368

Table 2.7.1-2 ASME Code Leak Functional Capability Line Name Line Number Section III Before Break Required Main Control Room VBS-L311 Yes No No Supply Main Control Room VBS-L312 Yes No No Exhaust Main Control Room VBS-L313 Yes No No Toilet Exhaust Main Control Room SDS-PL-L016 Yes No No Sanitary Vent Line Main Control Room SDS-PL-L179 Yes No No Sanitary Drain Line Main Control Room SDS-PL-L182 Yes No No Sanitary Drain Line Main Control Room PWS-PL-L319 Yes No No Water Line Main Control Room PWS-PL-L320 Yes No No Water Line Main Control Room WWS-PL-L808 Yes No No Waste Water Line Main Control Room WWS-PL-L851 Yes No No Water Line Table 2.7.1-3 Equipment Tag No. Display Control Function Supplemental Air Filtration Unit VBS-MA-03A Yes Start Fan A (Run Status)

Supplemental Air Filtration Unit VBS-MA-03B Yes Start Fan B (Run Status)

MCR/CSA Supply Air Handling VBS-MA-01A Yes Start Units (AHU) A Fans VBS-MA-02A (Run Status)

MCR/CSA Supply AHU B Fans VBS-MA-01B Yes Start VBS-MA-02B (Run Status)

Division "A" and "C" Class 1E VBS-MA-05A Yes Start Electrical Room AHU A Fans VBS-MA-06A (Run Status)

Division "A" and "C" Class 1E VBS-MA-05C Yes Start Electrical Room AHU C Fans VBS-MA-06C (Run Status)

Division "B" and "D" Class 1E VBS-MA-05B Yes Start Electrical Room AHU B Fans VBS-MA-06B (Run Status)

C-370 Amendment No. 41

Table 2.7.1-3 Equipment Tag No. Display Control Function Division "B" and "D" Class 1E VBS-MA-05D Yes Start Electrical Room AHU D Fans VBS-MA-06D (Run Status)

Division "A" and "C" Class 1E VBS-MA-07A Yes Start Battery Room Exhaust Fans VBS-MA-07C (Run Status)

Division "B" and "D" Class 1E VBS-MA-07B Yes Start Battery Room Exhaust Fans VBS-MA-07D (Run Status)

MCR Ancillary Fans VBS-MA-10A No Run VBS-MA-10B Division B Room Ancillary Fan VBS-MA-11 No Run Division C Room Ancillary Fan VBS-MA-12 No Run Table 2.7.1-4 Inspections, Tests, Analyses, and Acceptance Criteria No. ITAAC No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria 677 2.7.01.01 1. The functional arrangement of the Inspection of the as-built system The as-built VBS conforms VBS is as described in the Design will be performed. with the functional Description of this subsection 2.7.1 arrangement described in the Design Description of this subsection 2.7.1.

678 2.7.01.02a 2.a) The components identified in Inspection will be conducted of The ASME Code Section III Table 2.7.1-1 as ASME Code the as-built components and design reports exist for the Section III are designed and constructed piping as documented in the as-built components and in accordance with ASME Code ASME design reports. piping identified in Section III requirements. Tables 2.7.1-1 and 2.7.1-2 as 2.b) The piping identified in Table ASME Code Section III.

2.7.1-2 as ASME Code Section III is designed and constructed in accordance with ASME Code Section III requirements.

3.a) Pressure boundary welds in Inspection of the as-built A report exists and concludes components identified in Table 2.7.1-1 pressure boundary welds will be that the ASME Code Section as ASME Code Section III meet ASME performed in accordance with III requirements are met for Code Section III requirements. the ASME Code Section III. nondestructive examination of 3.b) Pressure boundary welds in piping pressure boundary welds.

identified in Table 2.7.1-2 as ASME Code Section III meet ASME Code Section III requirements.

C-371 Amendment No. 85

Table 2.7.1-4 Inspections, Tests, Analyses, and Acceptance Criteria No. ITAAC No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria 698 2.7.01.12 Not used per Amendment No. 113 699 2.7.01.13 Not used per Amendment No. 113 700 2.7.01.14 8.d) The VBS provides ventilation Testing will be performed on the The fans start and run.

cooling via the ancillary equipment in components in Table 2.7.1-3.

Table 2.7.1-3 to the MCR and the division B&C Class 1E I&C rooms.

9. Safety-related displays identified in Inspection will be performed for Safety-related displays Table 2.7.1-1 can be retrieved in the retrievability of the safety- identified in Table 2.7.1-1 can MCR. related displays in the MCR. be retrieved in the MCR.

10.a) Controls exist in the MCR to Stroke testing will be performed Controls in the MCR operate cause the remotely operated valves on the remotely operated valves to cause the remotely operated identified in Table 2.7.1-1 to perform identified in Table 2.7.1-1 using valves identified in Table their active functions. the controls in the MCR. 2.7.1-1 to perform their active functions.

10.b) The valves identified in Table Testing will be performed using The valves identified in Table 2.7.1-1 as having PMS control perform real or simulated signals into the 2.7.1-1 as having PMS control their active safety function after PMS. perform their active safety receiving a signal from the PMS. function after receiving a signal from PMS.

11. After loss of motive power, the Testing of the remotely operated Upon loss of motive power, remotely operated valves identified in valves will be performed under each remotely operated valves Table 2.7.1-1 assume the indicated loss the conditions of loss of motive identified in Table 2.7.1-1 of motive power position. power. assumes the indicated loss of motive power position.
12. Controls exist in the MCR to cause Testing will be performed on the Controls in the MCR operate the components identified in Table components in Table 2.7.1-3 to cause the components listed 2.7.1-3 to perform the listed function. using controls in the MCR. in Table 2.7.1-3 to perform the listed functions.
13. Displays of the parameters Inspection will be performed for The displays identified in identified in Table 2.7.1-3 can be retrievability of the parameters Table 2.7.1-3 can be retrieved retrieved in the MCR. in the MCR. in the MCR.
14. The background noise level in the The as-built VBS will be The background noise level in MCR and RSR does not exceed operated, and background noise the MCR and RSR does not 65 dB(A) when the VBS is operating. levels in the MCR and RSR will exceed 65 dB(A) when the be measured. VBS is operating.

C-374 Amendment No. 113

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