ML15239A083

NRR E-mail Capture - FW: Advanced Response - WBN ESEP Clarifying Questions

ML15239A083
Person / Time
Site:	Watts Bar
Issue date:	05/26/2015
From:	Thompson R Tennessee Valley Authority
To:	Steve Wyman Japan Lessons-Learned Division
References
Download: ML15239A083 (41)

Text

NRR-PMDAPEm Resource From: Thompson, Russell R [rrthompson@tva.gov]

Sent: Tuesday, May 26, 2015 11:13 AM To: Wyman, Stephen

Subject:

FW: Advanced Response - WBN ESEP Clarifying Questions Attachments: Advanced Response - WBN ESEP Clarifying Questions.docx; Attachment - Elevation Reference.docx I meant to include you on the WBN distribution too.

Russell Thompson Corporate Nuclear Licensing W: 423/751-2567 C: 423/593-1831 This electronic message transmission contains information which may be TVA SENSITIVE, TVA RESTRICTED or TVA CONFIDENTIAL.

Any misuse or unauthorized disclosure can result in both civil and criminal penalties. If you are not the intended recipient, be aware that any disclosure, copying, distribution or use of the content of this information is prohibited. If you have received this communication in error, please notify me immediately by email and delete the original message.

From: Thompson, Russell R Sent: Tuesday, May 26, 2015 10:57 AM To: 'DiFrancesco, Nicholas'

Subject:

Advanced Response - WBN ESEP Clarifying Questions Per our conversation, attached are the advanced responses to the clarifying questions on the WBN ESEP.

The formal response will be submitted in the near future.

Please call me if you have any questions.

Russell Thompson Corporate Nuclear Licensing W: 423/751-2567 C: 423/593-1831 This electronic message transmission contains information which may be TVA SENSITIVE, TVA RESTRICTED or TVA CONFIDENTIAL.

Any misuse or unauthorized disclosure can result in both civil and criminal penalties. If you are not the intended recipient, be aware that any disclosure, copying, distribution or use of the content of this information is prohibited. If you have received this communication in error, please notify me immediately by email and delete the original message.

1

Hearing Identifier: NRR_PMDA Email Number: 2341 Mail Envelope Properties (8413227FF24DB5489D86AE8EF8ADCAFE2C291916)

Subject:

FW: Advanced Response - WBN ESEP Clarifying Questions Sent Date: 5/26/2015 11:13:23 AM Received Date: 5/26/2015 11:14:25 AM From: Thompson, Russell R Created By: rrthompson@tva.gov Recipients:

"Wyman, Stephen" <Stephen.Wyman@nrc.gov>

Tracking Status: None Post Office: TVACHAXCH8.main.tva.gov Files Size Date & Time MESSAGE 1571 5/26/2015 11:14:25 AM Advanced Response - WBN ESEP Clarifying Questions.docx 29859 Attachment - Elevation Reference.docx 122228 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received:

Clarifying Questions: Watts Bar - Expedited Seismic Evaluation Process Review Clarifying Question 1 In the March 2014, Seismic Hazard and Screening Report for WBN, the licensee stated that the Safe Shutdown Earthquake (SSE) control point is at an elevation of 664 ft. mean sea level, while in the ESEP report the licensee stated that the SSE control point is at an elevation of 684 ft.

Please clarify the SSE control point elevation and discuss the impact of this elevation on the analyses provided in the ESEP report.

Response

The SSE control point elevation is 664 ft mean sea level as stated in the March 2014 Seismic Hazard and Screening Report for WBN. The ESEP statement that the SSE control point is at an elevation of 684 ft is a typographical error. The ESEP should state that the SSE control point is at an elevation of 664 ft, consistent with the March 2014 Seismic Hazard and Screening Report.

The typographical error in SSE control point elevation does not impact the analyses provided in the ESEP report.

Clarifying Question 2 The ESEP report does not provide elevations for the expedited seismic equipment list (ESEL) items and their mounting heights above grade level. Electric Power Research Institute (EPRI) NP-6041-SL states that elements shall be mounted less than 40 feet above grade level, otherwise, care shall be excised in using this guidance.

Please provide the elevations for the ESEL items and their mounting heights above grade level, and clarify how these ESEL items are evaluated based on this stipulation regarding 40 feet in the EPRI guidance.

Response

The attached table provides the elevations for the ESEL items. At WBN grade level is 728 ft (FSAR 1.2.1.4 and 2.4).

The ESEL items were evaluated in accordance with the EPRI NP-6041-SL guidance and, as required by EPRI NP-6041, care was exercised in using the guidance for components mounted more than 40 feet above grade. For additional detail, please refer to Clarifying Question 4A.

Page 1 of 6

Clarifying Questions: Watts Bar - Expedited Seismic Evaluation Process Review Clarifying Question3 The ESEP report appears to contain some inconsistencies between the choice of the review level earthquake (RLE) and demand assessment. ESEP Section 5.2 states that the in-structure response spectra (ISRS) used in the updated individual plant examination of external events (IPEEE) are based on the NUREG-0098 median shape for rock with a peak ground acceleration (PGA) of 0.5g. ESEP Section 6.1 refers to the 1998 seismic margin assessment (SMA) of Unit 1 and the 2014 IPEEE Report for Unit 2 and states that seismic demand was the IPEEE [RLE] for SMA (median NUREG/CR-0098 ground response spectrum for rock anchored to 0.3g PGA).

Please clarify these two references to the demand. The NRC staff understands that the IPEEE process results that were used in compiling and assessing the ESEL were based on a demand spectrum anchored at 0.3g and not 0.5g.

Response

The IPEEE process results that were used in compiling and assessing the ESEL were based on a demand spectrum anchored at 0.5g. TVAs Letter CNL-15-027 of March 20, 2015 submitted theIPEEE Final Report process results based on a demand spectrum anchored at 0.5g.

Clarifying Question 4 The ESEP report discusses that following the submittal of the IPEEE Reports, the high confidence of low probability of failure (HCLPF) capacity was updated using a more accurate approach that led to a minimum HCLPF of 0.5g for components of the IPEEE.

(A)Please discuss how the removal of conservatism affected the screening of IPEEE components since the submittal of the IPEEE Reports. (B)Clarify whether any items appearing in the ESEL were affected by the updated IPEEE HCLPF and were screened out as a result. (C)Please clarify which version of the IPEEE was used for the screening and presentation of HCLPF values.

Response4(A)

TVAs March 20, 2015 submittal to the NRC (Letter CNL-15-027, WBN2 IPEEE Final Report) provides a detailed discussion of how the removal of conservatism affected the screening of IPEEE components. In all instances the approaches utilized were consistent with the guidance in EPRI NP-6041. Following is a discussion of highlights from the submittal.

A key part of the more accurate approach is the specification of seismic demand. The Set B+C new design/modification spectra were used in the WBN1 IPEEE program (1998, ref.

11) as the basis for defining seismic demand for equipment on the SSEL. Appropriate scale factors were used to boost those amplified response spectra (ARS) to the demand level of the RLE. These scale factors were also used for the WBN2 IPEEE Design Report of 2010 Page 2 of 6

Clarifying Questions: Watts Bar - Expedited Seismic Evaluation Process Review Response 4(A) (continued)

(submitted to NRC by letter dated April 30, 2010 - see NRC Adams document ML111960300) also for a screening level of 0.30g.

However, it was determined that the use of the enveloped WBN B+C design ARS as the basis for scaling of seismic demand loading in HCLPF capacity calculations introduces excessive conservatism.

As part of the more detailed analysis performed for the HCLPF capacity goal of 0.5g, median centered response analysis was utilized to determine the in-structure response spectra (ISRS) seismic demand for the WBN2 IPEEE Final Report, TVAs March 20, 2015 submittal to the NRC (Letter CNL-15-027).

The EPRI SMA guidelines are based on use of median centered response spectra, and not conservative design response spectra. The use of scaled WBN Set B+C design spectra was conservative for screening at the 0.30g HCLPF level. However, as noted above, use of the same WBN ARS at a higher scaled HCLPF level of 0.5g is excessively conservative.

The walkdown screening evaluations were conducted in consideration of the more demanding EPRI NP-6041 0.50g screening level. Walkdown of items unique to WBN2 was performed. In addition a walkby was performed for common items that were previously addressed in the WBN1 program. No outlier configurations or seismic concerns were noted by the walkdown. The governing potential seismic proximity interactions that were identified and evaluated as acceptable by the Integrated Interaction Program (IIP) were revisited for the increased seismic demand associated with 0.50g RLE. In all cases, the IIP conclusions remained valid for the increased seismic demand and were assigned a HCLPF capacity of at least 0.50g.

As a result of the walkdown screening evaluations, the Seismic Review Team (SRT) concurred that the limiting HCLPF capacity components were as identified by the WBN1 IPEEE program, and these components became the focus of the HCLPF evaluations.

These WBN1 HCLPF capacity calculations were reviewed in detail, in light of the target 0.50g RLE for WBN2.

The components that had a HCLPF capacity less than 0.50g based on the WBN1 review and are on the ESEL include:

Component on ESEL and ESEL Item Number HCLPF < 0.5g WBN1 Review 6900V Shutdown Boards 23, 24, 200 480V Shutdown Board Transformers 57, 58, 59, 60 CCS Heat Exchangers 37, 38 480V RMOV Boards 49, 50, 51, 52 480V Control & Aux Boards 53, 54, 55, 56 Page 3 of 6

Clarifying Questions: Watts Bar - Expedited Seismic Evaluation Process Review Response 4(A) (continued)

With only one exception, all of the as-installed components were found to have a HCLPF capacity greater than 0.50g. The exception was the 480V Shutdown Board Transformers.

After the more detailed analysis, these Transformers fell short of the 0.50g target, so a modification was designed and installed in order to increase the seismic HCLPF capacity above 0.50g. Without this modification, HCLPF capacity was 0.41g. The modification involved replacement of the eight (8) base connection bolts with higher strength capacity bolts, on all of the 480V Shutdown Board Transformers. This modification was completed for all six (6) WBN2 Shutdown Board Transformers and all 6 WBN1 Shutdown Board Transformers.

For the components that had a HCLPF capacity less than 0.50g based on the WBN1 review and are on the ESEL , the updated HCLPF seismic capabilities exceed the target screening value of 0.5g, as summarized in Table 2-3: WBN2 Updated HCLPF Seismic Capabilities in the March 20, 2015 WBN2 IPEEE submittal:

Component on ESEL HCLPF Failure Mode 6900V Shutdown Boards 0.531g Functionality 480V Shutdown Board Transformers 0.635g Functionality CCS Heat Exchangers 0.508g Anchorage 480V RMOV Boards 0.560g Structural Integrity 480V Control & Aux Boards 0.943g Structural Integrity However, the supporting calculation (ref. 12) for the WBN IPEEE HCLPF capacities hasbeen revised. For four of the components, the revised HCLPF is larger. For one of the components, the 480V Control & Aux Boards, the revised HCLPF is still larger than the 0.5g target but smaller than the value reported in Table 2-3. In summary, for all five components, the revised HCLPF is far in excess of the target screening value of 0.5g.

HCLPF from Revised Supporting Calculations Component on ESEL HCLPF Failure Mode 6900V Shutdown Boards 0.567g Functionality 480V Shutdown Board Transformers 0.854g Functionality CCS Heat Exchangers 0.575g Anchorage 480V RMOV Boards 0.690g Structural Integrity 480V Control & Aux Boards 0.890g Structural Integrity Page 4 of 6

Clarifying Questions: Watts Bar - Expedited Seismic Evaluation Process Review Response 4(A) (continued)

In addition to these more detailed HCLPF capacity evaluations, additional screening evaluations of equipment and systems for 0.50g RLE are required by the EPRI NP-6041 margins methodology and NUREG-1407. The additional screening evaluations pertinent to the ESEP are for active valves, heat exchangers and pressure vessels, and fans and air handlers. All items were screened as adequate for the 0.50g RLE.

Because of the HCLPF capacity evaluations performed for WBN2, TVAs March 20, 2015 submittal to the NRC concluded that the HCLPF capacity of WBN is >0.50g RLE, defined at rock outcrop per NUREG CR-0098 median shape rock spectrum.

Response 4(B)

In response to clarifying question 5, a column indicating IPEEE or ESEP has been added to Table B-1. If, for an item, the table indicates IPEEE and Screened and > 0.5, than the item was affected by the updated IPEEE and screened out as a result.

The response to clarifying question 4A lists the components that had a HCLPF capacity less than 0.50g based on the 1998 WBN U1 review and the 2010 WBN2 IPEEE Design Report and are on the ESEL. For these components the original table only indicated ESEL and Screened and > 0.5g meaning that the ESEP was taking credit for the IPEEE work that increased the components HCLPF to greater than 0.5g. For these components, the revised table now includes the IPEEE Failure Mode and HCLPF.

Response 4(C)

For items indicated as IPEEE in Table B-1, the version of the IPEEE submitted on March 20, 2015 was used for the screening and presentation of HCLPF values.

Page 5 of 6

Clarifying Questions: Watts Bar - Expedited Seismic Evaluation Process Review Clarifying Question 5 In listing the HCLPF values in Attachment B to the ESEP report for several ESEL items the value is not specified but identified as >0.5[g].

Please clarify and indicate on Table B-1 whether the items listed have been screened during the ESEP review or the IPEEE.

Response 5 To clarify Table B-1, a column indicating IPEEE or ESEP has been added.

If the table indicates IPEEE and Screened then the item was screened during the IPEEE review.

The response to clarifying question 4A lists the components that had a HCLPF capacity less than 0.50g based on the 1998 WBN1 and 2010 WBN2 reviews and are on the ESEL. For these components the original table only indicated ESEL and Screened and > 0.5g meaning that the ESEP was taking credit for the IPEEE work that increased the components HCLPFto greater than 0.5g. For these components, the revised table now includes the IPEEE Failure Mode and HCLPF.

Page 6 of 6

ATTACHMENT B ESEP HCLPF VALUES AND FAILURE MODES TABULATION

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

Solid State 47W200-5 WBN-1-PNL-099- Screened > 0.5 1 Protection 708 IPEEE R48-A System Train A 47W605-2 Solid State WBN-2-PNL-099- Screened > 0.5 2 Protection 708 IPEEE R50-B System Train B Reactor WBN-2-PNL-099- Screened > 0.5 3 Protection I 708 IPEEE R2-D Process System Solid State WBN-2-PNL-099- Screened > 0.5 4 Protection 708 IPEEE R48-A System Train A Solid State WBN-1-PNL-099- Screened > 0.5 5 Protection 708 IPEEE R50-B System Train B Reactor WBN-2-PNL-099- Screened > 0.5 6 Protection II 708 IPEEE R6-E Process System WBN-1-PNL-275- ICCM System Screened > 0.5 7 708 IPEEE R179-A Train A CH 1 Common Q WBN-2-PNL-275- Screened > 0.5 8 PAMS Panel 708 IPEEE R179-A Train A WBN-1-PNL-275- ICCM System Screened > 0.5 9 708 IPEEE R180-B Train B CH 2 Common Q WBN-2-PNL-275- Screened > 0.5 10 PAMS Panel 708 IPEEE R180-B Train B WBN-2-HIC-068- RX HEAD VENT Screened > 0.5 47W605-1 M4 11 755 IPEEE 396 FLOW CONTROL Solid State 47W200-5 WBN-2-PNL-099- Screened > 0.5 12 Protection 708 IPEEE R46-A System Train A 47W605-2 Solid State WBN-2-PNL-099- Screened > 0.5 13 Protection 708 IPEEE R49-B System Train B Reactor WBN-2-PNL-099- Screened > 0.5 14 Protection II 708 IPEEE R6-E Process System WBN-1-ACUM- SIS Accumulator Screened > 0.5 47W200-14 15 716 IPEEE 063-0001 Tank 1

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

WBN-1-ACUM- SIS Accumulator Screened > 0.5 16 716 IPEEE 063-0002 Tank 2 WBN-1-ACUM- SIS Accumulator Screened > 0.5 47W200-14 17 716 IPEEE 063-0003 Tank 3 WBN-1-ACUM- SIS Accumulator Screened > 0.5 18 716 IPEEE 063-0004 Tank 4 WBN-0-BAT-236- 125 V Vital Screened > 0.5 45N218 19 772 IPEEE 0001-D Battery I WBN-0-BAT-236- 125 V Vital Screened > 0.5 45W202 20 772 IPEEE 0002-E Battery II WBN-0-BAT-236- 125 V Vital Screened > 0.5 21 772 IPEEE 0003-F Battery III WBN-0-BAT-236- 125 V Vital Screened > 0.5 22 772 IPEEE 0004-G Battery IV 6.9 KV 45W204 WBN-1-BD-211-A- Screened > 0.5 23 Shutdown Board 757 IPEEE A

1A-A 6.9 KV WBN-2-BD-211-B- Screened > 0.5 24 Shutdown Board 757 IPEEE B

2B-B 480V WBN-1-BD-212- Screened > 0.5 25 Shutdown Board 757 IPEEE A001-A 1A1-A 480V WBN-2-BD-212- Screened > 0.5 26 Shutdown Board 757 IPEEE A001-A 2A1-A WBN-1-BD-212- 480V Shutdown Screened > 0.5 27 757 IPEEE A002-A Board 1A2-A WBN-2-BD-212- 480V Shutdown Screened > 0.5 28 757 IPEEE B002-B Board 2B2-B WBN-0-BD-236- 125V Vital Screened > 0.5 29 757 IPEEE 0001-D Battery Board I WBN-0-BD-236- 125V Vital Screened > 0.5 30 757 IPEEE 0002-E Battery Board II WBN-0-BD-236- 125V Vital Screened > 0.5 31 757 IPEEE 0003-F Battery Board III WBN-0-BD-236- 125V Vital Screened > 0.5 32 757 IPEEE 0004-G Battery Board IV 125 V Vital 45W202 WBN-0-CHGR-236- Screened > 0.5 33 Battery Charger 772 IPEEE 0001-D I

WBN-0-CHGR-236- 125 V Vital Screened > 0.5 34 772 IPEEE 0002/E Battery Charger

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

II 125 V Vital WBN-0-CHGR-236- Screened > 0.5 35 Battery Charger 772 IPEEE 0003/F III 125 V Vital 45W202 WBN-0-CHGR-236- Screened > 0.5 36 Battery Charger 772 IPEEE 0004/G IV WBN-1-HTX-070- CCS HEAT Screened > 0.5 47W200-8 37 737 IPEEE 0185 EXCHANGER A WBN-2-HTX-070- CCS HEAT Screened > 0.5 38 737 IPEEE 0185 EXCHANGER B 47W200-5 WBN-1-HTX-074- RHR HEAT Screened > 0.5 39 713 IPEEE 0030-A EXCHANGER 1A WBN-2-HTX-074- RHR HEAT Screened > 0.5 40 713 IPEEE 0031-A EXCHANGER 2A WBN-1-INV-235- 120 V AC Vital Screened > 0.5 45W202 41 772 IPEEE 0001-D Inverter 1-I WBN-2-INV-235- 120 V AC Vital Screened > 0.5 42 772 IPEEE 0001-D Inverter 2-I WBN-1-INV-235- 120 V AC Vital Screened > 0.5 43 772 IPEEE 0002-E Inverter 1-II WBN-2-INV-235- 120 V AC Vital Screened > 0.5 44 772 IPEEE 0002-E Inverter 2-II WBN-1-INV-235- 120 V AC Vital Screened > 0.5 45 772 IPEEE 0003-F Inverter 1-III WBN-2-INV-235- 120 V AC Vital Screened > 0.5 46 772 IPEEE 0003-F Inverter 2-III WBN-1-INV-235- 120 V AC Vital Screened > 0.5 47 772 IPEEE 0004-G Inverter 1-IV WBN-2-INV-235- 120 V AC Vital Screened > 0.5 48 772 IPEEE 0004-G Inverter 2-IV 480V Reactor 45W202 WBN-1-MCC-213- Screened > 0.5 49 MOV Board 772 IPEEE A001-A 1A1-A 480V Reactor WBN-2-MCC-213- Screened > 0.5 50 MOV Board 772 IPEEE A001-A 2A1-A WBN-1-MCC-213- 480V Reactor Screened > 0.5 51 772 IPEEE B001-B MOV Board 1B1-

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

B 480V Reactor WBN-2-MCC-213- Screened > 0.5 52 MOV Board 2B1- 772 IPEEE B001-B B

Cont& Aux Bldg 45W204 WBN-1-MCC-214- Screened > 0.5 53 Vent Board 757 IPEEE A001-A 1A1-A Cont& Aux Bldg 45W204 WBN-2-MCC-214- Screened > 0.5 54 Vent Board 757 IPEEE B001-B 2B1-B Cont& Aux Bldg WBN-1-MCC-214- Screened > 0.5 55 Vent Board 757 IPEEE A002-A 1A2-A Cont& Aux Bldg WBN-2-MCC-214- Screened > 0.5 56 Vent Board 757 IPEEE B002-B 2B2-B 480 V 45W202 WBN-1-OXF-212- Screened > 0.5 57 Transformer 772 IPEEE A001-A 1A1-A 480 V WBN-2-OXF-212- Screened > 0.5 58 Transformer 772 IPEEE A001-A 2A1-A 480 V WBN-1-OXF-212- Screened > 0.5 59 Transformer 772 IPEEE A002-A 1A2-A 480 V WBN-2-OXF-212- Screened > 0.5 60 Transformer 772 IPEEE B002-B 2B2-B Centrifugal 47W200-6, 9 WBN-1-PMP-062- Screened > 0.5 61 Charging Pump 692 IPEEE 0108-A 1A-A Centrifugal WBN-2-PMP-062- Screened > 0.5 62 Charging Pump 692 IPEEE 0108-A 2A-A SAFETY WBN-1-PMP-063- Screened > 0.5 63 INJECTION 692 IPEEE 0010-A PUMP 1A-A SAFETY WBN-2-PMP-063- Screened > 0.5 64 INJECTION 692 IPEEE 0015-A PUMP 2A-A Component 47W200-5, 8 WBN-1-PMP-070- Screened > 0.5 65 Cooling System 713 IPEEE 0046-A Pump 1A-A

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

Component WBN-2-PMP-070- Screened > 0.5 66 Cooling System 713 IPEEE 0059-A Pump 2A-A 47W200-7 WBN-1-PMP-074- Screened > 0.5 67 RHR PUMP 1A-A 676 IPEEE 0010-A WBN-2-PMP-074- Screened > 0.5 68 RHR PUMP 2B-B 676 IPEEE 0020-B Steam 47W600-2 WBN-1-PNL-276- Screened > 0.5 69 Generator Level 757 IPEEE L011A Control Panel Steam WBN-2-PNL-276- Screened > 0.5 70 Generator Level 757 IPEEE L011A Control Panel Steam WBN-1-PNL-276- Screened > 0.5 71 Generator Level 757 IPEEE L011B Control Panel Steam WBN-2-PNL-276- Screened > 0.5 72 Generator Level 757 IPEEE L011B Control Panel UNIT CONT. 47W605-1 WBN-1-PNL-278- Screened > 0.5 73 BOARD PNL 1- 755 IPEEE M003 M-3 UNIT CONT.

WBN-2-PNL-278- Screened > 0.5 74 BOARD PNL 2- 755 IPEEE M003 M-3 UNIT CONT.

WBN-1-PNL-278- Screened > 0.5 75 BOARD PNL 1- 755 IPEEE M004 M-4 UNIT CONT.

WBN-2-PNL-278- Screened > 0.5 76 BOARD PNL 2- 755 IPEEE M004 M-4 WBN-1-PNL-278- TEMPERATURE Screened > 0.5 77 755 IPEEE M010 MONITORING WBN-2-PNL-278- TEMPERATURE Screened > 0.5 78 755 IPEEE M010 MONITORING WBN-1,2-TANK- 7 Day Fuel Oil Screened > 0.5 10N320-5 79 738 IPEEE 018-0038, 41 Sup Dsl Gen WBN-1-TANK-063- Refueling Water Screened > 0.5 41N363-3 80 729 IPEEE 0046 Storage Tank

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

WBN-2-TANK-063- Refueling Water Screened > 0.5 81 729 IPEEE 0046 Storage Tank Component 47W200-3, 9 WBN-1-TANK-070- Screened > 0.5 82 Cooling Water 757 IPEEE 0001 Surge Tank Component WBN-2-TANK-070- Screened > 0.5 83 Cooling Water 757 IPEEE 0001 Surge Tank CVCS SEAL U1 SSEL page A61 WBN-1-FCV-062- Screened > 0.5 84 WATER RETURN 720 IPEEE 0063-A HEADER ISOL CVCS SEAL U1 SSEL page A61 WBN-2-FCV-062- Screened > 0.5 85 WATER RETURN 720 IPEEE 0063-A HEADER ISOL Accumulator 47W435-5 WBN-1-FCV-063- Screened > 0.5 86 Isolation Valve 716 IPEEE 0067 4

Accumulator WBN-2-FCV-063- Screened > 0.5 87 Isolation Valve 716 IPEEE 0067 4

Accumulator 47W435-4 WBN-1-FCV-063- Screened > 0.5 88 Isolation Valve 716 IPEEE 0080 3

Accumulator WBN-2-FCV-063- Screened > 0.5 89 Isolation Valve 716 IPEEE 0080 3

WBN-1-FCV-067- LWR CNTMT A Screened > 0.5 U1 SSEL page A75 90 719 IPEEE 0083 CLRS SUP CIV Accumulator 47W435-5 WBN-1-FCV-063- Screened > 0.5 91 Isolation Valve 716 IPEEE 0098 2

Accumulator WBN-2-FCV-063- Screened > 0.5 92 Isolation Valve 716 IPEEE 0098 2

Accumulator WBN-1-FCV-063- Screened > 0.5 93 Isolation Valve 716 IPEEE 0118 1

Accumulator WBN-2-FCV-063- Screened > 0.5 94 Isolation Valve 716 IPEEE 0118 1

WBN-2-FCV-067- LWR CNTMT A Screened > 0.5 IPEEE SSEL 95 719 IPEEE 0083 CLRS SUP CIV WBN-1-FCV-067- LWR CNTMT C Screened > 0.5 96 719 IPEEE 0091 CLRS SUP CIV

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

WBN-2-FCV-067- LWR CNTMT C Screened > 0.5 97 719 IPEEE 0091 CLRS SUP CIV WBN-1-FCV-067- LWR CNTMT B Screened > 0.5 98 720 IPEEE 0099 CLRS SUP CIV WBN-2-FCV-067- LWR CNTMT B Screened > 0.5 99 720 IPEEE 0099 CLRS SUP CIV WBN-1-FCV-067- LWR CNTMT D Screened > 0.5 100 715 IPEEE 0107 CLRS SUP CIV WBN-2-FCV-067- LWR CNTMT D Screened > 0.5 101 715 IPEEE 0107 CLRS SUP CIV WBN-1-FCV-067- UPR CNTMT CLR Screened > 0.5 102 795 IPEEE 0130 A SUP CIV WBN-2-FCV-067- UPR CNTMT CLR Screened > 0.5 IPEEE SSEL 103 795 IPEEE 0130 A SUP CIV WBN-1-FCV-067- UPR CNTMT CLR Screened > 0.5 104 798 IPEEE 0133 C SUP CIV WBN-2-FCV-067- UPR CNTMT CLR Screened > 0.5 105 798 IPEEE 0133 C SUP CIV WBN-1-FCV-067- UPR CNTMT CLR Screened > 0.5 106 798 IPEEE 0138 B SUP CIV WBN-2-FCV-067- UPR CNTMT CLR Screened > 0.5 107 798 IPEEE 0138 B SUP CIV WBN-1-FCV-067- UPR CNTMT CLR Screened > 0.5 108 795 IPEEE 0141 D SUP CIV WBN-2-FCV-067- UPR CNTMT CLR Screened > 0.5 109 795 IPEEE 0141 D SUP CIV WBN-2-FCV-067- CCS HX DISCH to Screened > 0.5 110 737 IPEEE 0143 HDR B WBN-1-FCV-067- CCS HX DISCH to Screened > 0.5 111 737 IPEEE 0143 HDR B WBN-0-FCV-067- CCS HX C DISCH Screened > 0.5 112 737 IPEEE 0144 to HDR A PRESSURIZER 47W465-211 WBN-2-FCV-068- Screened > 0.5 113 PORV BLOCK 786 IPEEE 0332-B VALVE PRESSURIZER WBN-1-FCV-068- Screened > 0.5 114 PORV BLOCK 786 IPEEE 0333 VALVE RC Pump Therm IPEEE SSEL WBN-1-FCV-070- Screened > 0.5 115 Barrier Ret 722 IPEEE 0090-A CNTNMT Isol

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

RC Pump Therm WBN-2-FCV-070- Screened > 0.5 116 Barrier Ret 722 IPEEE 0090-A CNTNMT Isol RC Thermal WBN-1-FCV-070- Screened > 0.5 117 Barrier ContIsol 741 IPEEE 0133-A Valve RC Thermal WBN-2-FCV-070- Screened > 0.5 118 Barrier ContIsol 741 IPEEE 0133-A Valve 47W427-4 TD AFW PUMP WBN-2-LCV-002- Screened > 0.5 119 SG # 2 Level 737 IPEEE 0173-B Control TD AFW PUMP WBN-1-LCV-003- Screened > 0.5 120 SG # 3 Level 737 IPEEE 0172-A Control TD AFW PUMP WBN-2-LCV-003- Screened > 0.5 121 SG # 3 Level 737 IPEEE 0172-A Control TD AFW PUMP WBN-1-LCV-003- Screened > 0.5 122 SG # 2 Level 737 IPEEE 0173-B Control TD AFW PUMP WBN-1-LCV-003- Screened > 0.5 123 SG # 1 Level 729 IPEEE 0174-B Control

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

TD AFW PUMP WBN-2-LCV-003- Screened > 0.5 124 SG # 1 Level 729 IPEEE 0174-B Control TD AFW PUMP WBN-1-LCV-003- Screened > 0.5 125 SG # 4 Level 729 IPEEE 0175-A Control 46W427-4 TD AFW PUMP WBN-2-LCV-003- Screened > 0.5 126 SG # 4 Level 729 IPEEE 0175-A Control SG 1Main STM 47W400-2 WBN-1-PCV-001- Screened > 0.5 127 HDR PWR Relief 762 IPEEE 0005-T Control Valve SG 1Main STM WBN-2-PCV-001- Screened > 0.5 128 HDR PWR Relief 762 IPEEE 0005-T Control Valve SG 2 Main STM WBN-1-PCV-001- Screened > 0.5 129 HDR PWR Relief 762 IPEEE 0012-T Control Valve SG 2 Main STM WBN-2-PCV-001- Screened > 0.5 130 HDR PWR Relief 762 IPEEE 0012-T Control Valve SG 3 Main STM WBN-1-PCV-001- Screened > 0.5 131 HDR PWR Relief 762 IPEEE 0023-T Control Valve SG 3 Main STM WBN-2-PCV-001- Screened > 0.5 132 HDR PWR Relief 762 IPEEE 0023-T Control Valve SG 4Main STM WBN-1-PCV-001- Screened > 0.5 133 HDR PWR Relief 762 IPEEE 0030-T Control Valve

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

SG 4Main STM WBN-2-PCV-001- Screened > 0.5 134 HDR PWR Relief 762 IPEEE 0030-T Control Valve WBN-2-PCV-068- PRESSURIZER Screened > 0.5 47w465-2 135 783 IPEEE 0334 PORV WBN-1-PCV-068- PRESSURIZER Screened > 0.5 136 783 IPEEE 0340A PORV Steam 47W400-2 WBN-1-SFV-001- Generator #3 Screened > 0.5 137 729 IPEEE 0512 Main Steam Safety Valve Steam WBN-2-SFV-001- Generator #3 Screened > 0.5 138 729 IPEEE 0512 Main Steam Safety Valve Steam 47W400-2 WBN-1-SFV-001- Generator #2 Screened > 0.5 139 729 IPEEE 0517 Main Steam Safety Valve Steam WBN-2-SFV-001- Generator #2 Screened > 0.5 140 729 IPEEE 0517 Main Steam Safety Valve Steam WBN-1-SFV-001- Generator #1 Screened > 0.5 141 729 IPEEE 0522 Main Steam Safety Valve Steam WBN-2-SFV-001- Generator #1 Screened > 0.5 142 729 IPEEE 0522 Main Steam Safety Valve Steam WBN-1-SFV-001- Generator #4 Screened > 0.5 143 729 IPEEE 0527 Main Steam Safety Valve Steam WBN-2-SFV-001- Generator #4 Screened > 0.5 144 729 IPEEE 0527 Main Steam Safety Valve WBN-1-FAN-030- Containment Air Screened > 0.5 47W915-5 145 740 IPEEE 0038 Return Fan A-A WBN-2-FAN-030- Containment Air Screened > 0.5 146 740 IPEEE 0039 Return Fan B-B

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

AC OUTPUT 45N218 WBN-1-EI-235- Screened > 0.5 147 AMMETER 772 IPEEE 001/A1 INVERTER 1-I 120 V AC Vital WBN-1-BD-235- Screened > 0.5 148 Instrument 757 IPEEE 0001-D Power Board 1-I AC OUTPUT WBN-1-EI-235- Screened > 0.5 149 AMMETER 772 IPEEE 002/A1 INVERTER 1-II 120 V AC Vital WBN-1-BD-235- Screened > 0.5 150 Instrument 757 IPEEE 0002-E Power Board 1-II 120 V AC Vital WBN-1-BD-235- Instrument Screened > 0.5 151 757 IPEEE 0003-F Power Board 1-III 120 V AC Vital WBN-1-BD-235- Instrument Screened > 0.5 152 757 IPEEE 0004-G Power Board 1-IV WBN-1-CLR-062- CCP 1A-A LUBE Screened > 0.5 47W200-6, 9 153 692 IPEEE 0108A-A OIL COOLER WBN-1-CLR-062- CCP 1A-A GEAR Screened > 0.5 154 692 IPEEE 0108B-A OIL COOLER SAFETY INJECTION WBN-1-CLR-063- Screened > 0.5 155 PUMP 1A-A 692 IPEEE 0010 LUBE OIL COOLER CNTMT SPRAY 47W200-7 WBN-1-CLR-072- Screened > 0.5 156 PUMP 1A-A OIL 676 IPEEE 0027 COOLER RHR PUMP 1A-A WBN-1-HTX-074- SEAL WATER Screened > 0.5 157 676 IPEEE 0010-A HEAT EXCHANGER WBN-1-XS-003- STM GEN #3 TRF Screened > 0.5 47W600-2 158 757 IPEEE 0172A-A SW WBN-1-XS-003- STM GEN #4 TRF Screened > 0.5 L11A and L11B Aux 159 757 IPEEE Control Room Panels 0175A-A SW WBN-1-XS-003- STM GEN #2 TRF Screened > 0.5 160 757 IPEEE 0173A-B SW

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

WBN-1-XS-003- STM GEN #1 TRF Screened > 0.5 161 757 IPEEE 0174A-B SW TURB AFWP Screened > 0.5 47W605-1 162 WBN-1-XI-046-57 755 IPEEE DEMAND AUX FPT FLOW Main Control Room WBN-1-FIC-046- Screened > 0.5 163 IND 755 IPEEE Panels 0057A-S CONTROLLER TD AFW PMP Trip/Throttle Valve WBN-1-HS-046- Screened > 0.5 164 Handswitch 755 IPEEE 0056A-S AUTO MAN REMOTE SP FOR FIC-46-57B WBN-1-SI-046- AFWT A-S Screened > 0.5 165 755 IPEEE 0056A-S SPEED WBN-1-XI-046- AFWT A-S Screened > 0.5 166 755 IPEEE 0054A MOP POSITION WBN-1-XI-068- Screened > 0.5 167 Plasma Display 755 IPEEE 0100 WBN-1-XS-068- Plasma Display Screened > 0.5 168 755 IPEEE 0101 Key Pad WBN-1-HS-068- RCS PRZR PWR Screened > 0.5 169 755 IPEEE 340A-A RELIEF VALVE Common Q 47W605-1 WBN-2-CPU-094- operator Screened > 0.5 170 755 IPEEE 6000 Module Node Main Control Room Box Panels WBN-2-FOC-094- Common Q first Screened > 0.5 171 755 IPEEE 4001A modem WBN-1-HIC-068- RX HEAD VENT Screened > 0.5 172 755 IPEEE 397 FLOW CONTROL WBN-2-HS-063- SIS PUMP B-B Screened > 0.5 173 755 IPEEE 0015A MOTOR WBN-1-HS-063- SIS PUMP A-A Screened > 0.5 174 755 IPEEE 0010A MOTOR WBN-1-HS-030- AIR RET FAN A-A Screened > 0.5 175 755 IPEEE 0038A ON/OFF WBN-2-HS-030- AIR RET FAN B-B Screened > 0.5 176 755 IPEEE 0039B ON/OFF AC OUTPUT 45N218 WBN-2-EI-235- Screened > 0.5 177 AMMETER 772 IPEEE 001/A1 INVERTER 2-I

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft) 120 V AC Vital WBN-2-BD-235- Screened > 0.5 178 Instrument 757 IPEEE 0001-D Power Board 2-I 120 V AC Vital WBN-2-BD-235- Screened > 0.5 179 Instrument 757 IPEEE 0002-E Power Board 2-II AC OUTPUT WBN-2-EI-235- Screened > 0.5 180 AMMETER 772 IPEEE 002/A1 INVERTER 2-II 120 V AC Vital WBN-2-BD-235- Instrument Screened > 0.5 181 757 IPEEE 0003-F Power Board 2-III 120 V AC Vital WBN-2-BD-235- Instrument Screened > 0.5 182 757 IPEEE 0004-G Power Board 2-IV WBN-2-CLR-062- CCP 2A-A LUBE Screened > 0.5 47W600-6, 9 183 692 IPEEE 0108A-A OIL COOLER WBN-2-CLR-062- CCP 2A-A GEAR Screened > 0.5 184 692 IPEEE 0108B-A OIL COOLER SAFETY INJECTION WBN-2-CLR-063- Screened > 0.5 185 PUMP 2A-A 692 IPEEE 0010 LUBE OIL COOLER CNTMT SPRAY 47W200-7 WBN-2-CLR-072- Screened > 0.5 186 PUMP 2A-A OIL 676 IPEEE 0027 COOLER RHR PUMP 2A-A WBN-2-HTX-074- SEAL WATER Screened > 0.5 187 676 IPEEE 0010-A HEAT EXCHANGER WBN-2-XS-003- STM GEN #3 TRF Screened > 0.5 47W600-2 188 757 IPEEE 0172A-A SW WBN-2-XS-003- STM GEN #4 TRF Screened > 0.5 Aux Instrument 189 757 IPEEE Room 0175A-A SW WBN-2-XS-003- STM GEN #2 TRF Screened > 0.5 190 757 IPEEE Panels L11A L11B 0173A-B SW WBN-2-XS-003- STM GEN #1 TRF Screened > 0.5 191 757 IPEEE 0174A-B SW TURB AFWP Screened > 0.5 47W605-1 192 WBN-2-XI-046-57 755 IPEEE DEMAND

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

AUX FPT FLOW Main Control Room WBN-2-FIC-046- Screened > 0.5 193 IND 755 IPEEE Panels 0057A-S CONTROLLER TD AFW PMP Trip/Throttle Valve WBN-2-HS-046- Screened > 0.5 194 Handswitch 755 IPEEE 0056A-S AUTO MAN REMOTE SP FOR FIC-46-57B WBN-2-SI-046- AFWT A-S Screened > 0.5 195 755 IPEEE 0056A-S SPEED WBN-2-XI-046- AFWT A-S Screened > 0.5 196 755 IPEEE 0054A MOP POSITION WBN-2-HS-068- RCS PRZR REL Screened > 0.5 197 755 IPEEE 333A FLOW CONTROL WBN-2-HIC-068- RX HEAD VENT Screened > 0.5 198 755 IPEEE 397 FLOW CONTROL WBN-2-MON-068- Plasma Touch Screened > 0.5 199 755 IPEEE 0110 Screen Display 6.9 KV 45W204 Screened > 0.5 200 WBN-2-BD-211-A Shutdown Board 757 IPEEE 2A-A WBN-2-ACUM- SIS Accumulator Screened > 0.5 47W200-14 201 716 IPEEE 063-0001 Tank 1 WBN-2-ACUM- SIS Accumulator Screened > 0.5 202 716 IPEEE 063-0002 Tank 2 WBN-2-ACUM- SIS Accumulator Screened > 0.5 47W200-14 203 716 IPEEE 063-0003 Tank 3 WBN-2-ACUM- SIS Accumulator Screened > 0.5 204 716 IPEEE 063-0004 Tank 4 WBN-1-HIC-068- RX HEAD VENT Screened > 0.5 47W605-1 Main 205 755 IPEEE 396 FLOW CONTROL Control Room Reactor 47W605-2 WBN-1-PNL-099- Screened > 0.5 206 Protection I 708 IPEEE R2-D Process System Solid State WBN-1-PNL-099- Screened > 0.5 207 Protection 708 IPEEE R46-A System Train A Solid State WBN-1-PNL-099- Screened > 0.5 208 Protection 708 IPEEE R49-B System Train B

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

Reactor WBN-1-PNL-099- Screened > 0.5 209 Protection II 708 IPEEE R6-E Process System Containment WBN-1-PMP-072- Screened > 0.5 210 Spray Pump 1A- 676 IPEEE 0027-A A

MAIN STEAM LOOP 4 WBN-2-PI-001- Anchorage 0.56 211 PRESSURE 692 ESEP 0027D (typical for each SG)

TD AFW PMP WBN-2-HS-046- Functionality 0.57 212 TRIP/THV 2-FCV- 692 ESEP 0056B-S 1-51 POS CNTL Pressure Switch 47W420-6 to open U2 AOV 2-FCV-3-6386 from AFW WBN-2-PS-002- Functionality 0.83 213 Supply Tank 723 ESEP 0321 upon low pressure in U1 Condensate supply piping.

Solenoid valve 47W600-409 to open U1 AFW WBN-2-FSV-003- Functionality 0.83 214 Supply Tank 723 ESEP 6386 insolation Valve 1-FCV-306386 Safety Injection Anchorage 0.52 47W600-136, 325 215 WBN-1-FT-63-151 692 ESEP Pump Flow Safety Injection Anchorage 0.52 47W600-136,325 216 WBN-2-FT-63-20 692 ESEP Pump Flow MAIN STEAM L-381 LOOP 4 WBN-1-PI-001- Anchorage 0.56 217 PRESSURE 692 ESEP 0027D (typical for each SG)

TD AFW PMP WBN-1-HS-046- Functionality 0.57 218 TRIP/THV 1-FCV- 692 ESEP 0056B-S 1-51 POS CNTL Fuel Oil Transfer 15W814-1 WBN-0-HS-360- Anchorage 0.66 219 Pmp A Emer 742 ESEP 0103C Stop SW

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft) 220 Not Used WBN-0-PMP-360- Fuel Oil System Anchorage 0.66 Maxim Location 221 742 ESEP 103, 203 Transfer Pump 47W600-408 Level Indicating Transmitter for WBN-0-LIT-003- the AFW Supply Anchorage 0.51 222 729 ESEP 227 Tank and High/Low Level Alarms Primary Cntrl Boxed with Item 267 WBN-0-FU1-360- Anchorage 0.5 223 Fuse for Fuel Oil 742 ESEP 0103A Pump A Starter Secondary Cntrl WBN-0-FU1-360- Anchorage 0.5 224 Fuse for Fuel Oil 742 ESEP 0103B Pump A Starter Primary Cntrl WBN-0-FU1-360- Anchorage 0.5 225 Fuse for Fuel Oil 742 ESEP 0103C Pump A Starter 480 V FLEX Main 45W758-2 WBN-0-FUDS-360- Functionality 0.57 226 Panel A - Main - 772 ESEP 45W202 FP/AM Disconnect 480 v FLEX Main WBN-0-FUDS-360- Functionality 0.57 227 Panel B - Main - 772 ESEP FP/BM Disconnect 480v AC Vital 45W709-2 WBN-0-XSW-236- Functionality 0.89 228 Transfer Switch 772 ESEP 0004-S IV 480v AC Vital WBN-0-XSW-236- Functionality 0.89 229 Transfer Switch 772 ESEP 0003-S III 480v AC Vital 45W709-2 WBN-0-XSW-236- Functionality 0.89 230 Transfer Switch 772 ESEP 0002-S II WBN-0-XSW-236- 480v AC Vital Functionality 0.89 231 772 ESEP 0001-S Transfer Switch I 480 V FLEX DG A Refer to Item 342 WBN-0-GNGC- Neutral Functionality 0.57 232 786 ESEP 360-DG/A Grounding Resistor Box WBN-0-BKR-360- 480 V FLEX DG A Functionality 0.57 233 DG/A, B - Circuit Breaker

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

Hydrogen WBN-1-HTR-268- screened (rugged) 0.5 234 Igniters Group Various ESEP various A - 34 igniters Hydrogen WBN-2-HTR-268- screened (rugged) 0.5 235 Igniters Group B Various ESEP various

- 34 igniters Conservation Refer to Item 304 WBN-0-RFV-003- vent valve for screened (Table 2.4) 0.5 AFW Supply Tank 236 729 ESEP 0005 the AFW Supply Tank.

TD Aux 47W200-2, 9 WBN-1-FCV-001- screened 0.5 237 FeedwaterPmp 692 IPEEE 0052 Governor Valve TD Aux WBN-2-FCV-001- screened 0.5 238 FeedwaterPmp 692 IPEEE 0052 Governor Valve Pressure 47W600-408 indicator for the screened (rugged) 0.5 239 WBN-0-PI-003-1 729 ESEP AFW Supply Tank Pressure Switch 47W420-6 to open U1 AOV 1-FCV-3-6386 from AFW WBN-1-PS-002- screened (rugged) 0.5 240 Supply Tank 723 ESEP 0320 upon low pressure in U1 Condensate supply piping.

3MW Diesel FESB WBN-0-BD-360- Generator 3A Functionality 0.68 241 742 ESEP 0003A, 3B 6.9KV Switchgear Hydrogen 45N226-1 WBN-2-DXF-268- Anchorage 0.51 242 Mitigation 782 ESEP 0002-B Transformer Hydrogen WBN-1-DXF-268- Anchorage 0.51 243 Mitigation 782 ESEP 0001-A Transformer 480 V FLEX DG Rizzo HCLPF calc WBN-0-DXF-360- Functionality 0.57 244 2 KVA Sealed 742 ESEP page 46 DG/AP, BP XFMR

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft) 6900V 3MW 0-15W860-1 WBN-0-XFMR- FLEX Diesel GEN Functionality 0.67 245 742 ESEP 360-3A/1, 3B/1 20 KVA Dry Type Transformer 6900V 3MW Rizzo HCLPF calc WBN-0-XFMR- FLEX Diesel GEN Functionality 0.57 page 75 246 742 ESEP 360-3A/2, 3B/2 5 KVA Dry Type Transformer WBN-1-PNL-276- TDAFWP Control Anchorage 0.56 247 792 ESEP L381 Panel WBN-2-PNL-276- TDAFWP Control Anchorage 0.56 248 792 ESEP L381 Panel Fuel Oil Transfer Rizzo HCLPF calc WBN-0-PNL-360- Functionality 0.65 249 Pump Control 742 ESEP page 86, 104 group 3 DG/A1 Panel 125V Vital Batt 45N218 WBN-0-XSW-236- CHGR I 480 V Functionality 0.58 250 772 ESEP 0001A-S FLEX Transfer Switch 125V Vital Batt WBN-0-XSW-236- CHGR 2 480 V Functionality 0.58 251 772 ESEP 0002A-S FLEX Transfer Switch 125V Vital Batt WBN-0-XSW-236- CHGR 3 480 V Functionality 0.58 252 772 ESEP 0003A-S FLEX Transfer Switch 125V Vital Batt WBN-0-XSW-236- CHGR 4 480 V Functionality 0.58 253 772 ESEP 0004A-S FLEX Transfer Switch WBN-0-PNL-360- 480 V FLEX Fuse Functionality 0.57 47W200-2 254 772 ESEP FP/A Panel A WBN-0-PNL-360- 480 V FLEX Fuse Functionality 0.57 47W200-2 255 772 ESEP FP/B Panel B AUX FW 47W600-120 WBN-1-PNL-276- Functionality 0.85 256 TURBINE SPEED 692 ESEP L326-S CONTROL PANEL AUX FW WBN-2-PNL-276- Functionality 0.85 257 TURBINE SPEED 692 ESEP L326-S CONTROL PANEL

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft) 3MW Diesel 15W860-1A Generator A WBN-0-RES-360- Functionality 0.79 258 Neutral 742 ESEP 003A, 3B Grounding Resistor 47W600-120 AUX WBN-1-PNL-276- Functionality 0.57 259 FEEDWATER 692 ESEP L381A CONTROL AUX WBN-2-PNL-276- Functionality 0.57 260 FEEDWATER 692 ESEP L381A CONTROL FLEX COMMON 45W828-7 WBN-0-XSW-360- SPARE HP PUMP Functionality 0.57 261 757 ESEP HPCS TRANSFER SWITCH DG 1A-A 15N211-1 Transfer Switch Functionality 0.57 262 WBN-1-XSW-82-A 742 ESEP TO 6.9KV SD BD 1A-A DG 2A-A Transfer Switch Functionality 0.57 263 WBN-2-XSW-82-A 742 ESEP TO 6.9KV SD BD 2A-A DG 1B-BTransfer Functionality 0.57 264 WBN-1-XSW-82-B SwitchDG to SD 742 ESEP BD 1B-B DG 2B-BTransfer Functionality 0.57 265 WBN-2-XSW-82-B Switch DG to SD 742 ESEP BD 2B-B 480 V FLEX DG Rizzo HCLPF calc WBN-0-FUDS-360- Pump Functionality 0.57 page 186 266 742 ESEP DG/AP2, BP2 Disconnect Switch 3MW FLEX Rizzo HCLPF calc WBN-0-STR-360- Anchorage 0.54 267 Diesel GEN PMP 742 ESEP page 191 0103, 203 Starter 6900V 3MW 15W680-1 FLEX Diesel GEN WBN-0-SW-360- Anchorage 0.5 268 Fused 742 ESEP 0003A/1, 3B/1 Disconnect Switch

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

Reactor Level 47W600-292 WBN-1-TE-068- Anchorage 0.52 269 Cap tube Temp 713 ESEP 0380-E Comp Reactor Vessel 47W600-314 WBN-2-PNL-276- Anchorage 0.52 270 instrumentation 714 ESEP L340 System II Panel Reactor Vessel 47W600-297 WBN-1-PNL-276- Anchorage 0.52 271 instrumentation 714 ESEP L388 System I Panel Reactor Level WBN-2-TE-068- Anchorage 0.52 272 Cap tube Temp 714 ESEP 0380-E Comp AFW Supply 57W600-63 Anchorage 0.52 273 WBN-0-LI-3-227 Tank Level 708 ESEP Indicator Anchorage 0.52 47W605-1 274 WBN-1-LI-63-51 RWST Level 755 IPEEE Anchorage 0.52 275 WBN-2-LI-63-51 RWST Level 755 IPEEE TDAFW Pump Anchorage 0.52 276 WBN-1-LPF-3-142 755 ESEP Flow TDAFW Pump Anchorage 0.52 277 WBN-2-LPF-3-142 755 ESEP Flow WBN-1-LPF Anchorage 0.52 278 AFW Flow S/G 3 755 ESEP 147B WBN-2-LPF Anchorage 0.52 279 AFW Flow S/G 3 755 ESEP 147B WBN-1-LPF Anchorage 0.52 280 AFW Flow S/G 2 755 ESEP 155A WBN-2-LPF Anchorage 0.52 281 AFW Flow S/G 2 755 ESEP 155A WBN-1-LPF Anchorage 0.52 282 AFW Flow S/G 1 755 ESEP 163B WBN-2-LPF Anchorage 0.52 283 AFW Flow S/G 1 755 ESEP 163B WBN-1-LPF Anchorage 0.52 284 AFW Flow S/G 4 755 ESEP 170A WBN-2-LPF Anchorage 0.52 285 AFW Flow S/G 4 755 ESEP 170A S/G WR Level Anchorage 0.52 286 WBN-1-LPL-3-111 755 ESEP Loop 4

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

S/G WR Level Anchorage 0.52 287 WBN-2-LPL-3-111 755 ESEP Loop 4 S/G NR Level Anchorage 0.52 288 WBN-1-LPL-3-148 755 ESEP Loop 3 S/G NR Level Anchorage 0.52 289 WBN-2-LPL-3-148 755 ESEP Loop 3 S/G NR Level Anchorage 0.52 290 WBN-1-LPL-3-156 755 ESEP Loop 2 S/G NR Level Anchorage 0.52 291 WBN-2-LPL-3-156 755 ESEP Loop 2 S/G NR Level Anchorage 0.52 292 WBN-1-LPL-3-164 755 ESEP Loop 1 S/G NR Level Anchorage 0.52 293 WBN-2-LPL-3-164 755 ESEP Loop 1 S/G NR Level Anchorage 0.52 294 WBN-1-LPL-3-171 755 ESEP Loop 4 S/G NR Level Anchorage 0.52 295 WBN-2-LPL-3-171 755 ESEP Loop 4 S/G WR Level Anchorage 0.52 296 WBN-1-LPL-3-43 755 ESEP Loop 1 S/G WR Level Anchorage 0.52 297 WBN-2-LPL-3-43 755 ESEP Loop 1 S/G WR Level Anchorage 0.52 298 WBN-1-LPL-3-56 755 ESEP Loop 1 S/G WR Level Anchorage 0.52 299 WBN-2-LPL-3-56 755 ESEP Loop 2 S/G WR Level Anchorage 0.52 300 WBN-1-LPL-3-98 755 ESEP Loop 3 S/G WR Level Anchorage 0.52 301 WBN-2-LPL-3-98 755 ESEP Loop 3 WBN-1-LPL Anchorage 0.52 302 PZR Level 755 ESEP 335 WBN-2-LPL Anchorage 0.52 303 PZR Level 755 ESEP 335 Anchorage 0.52 304 WBN-0-LPL-78-42 SFP Level 755 ESEP WBN-1-LPN Anchorage 0.52 305 Nuclear Flux 755 ESEP 131

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

WBN-2-LPN Anchorage 0.52 306 Nuclear Flux 755 ESEP 132 S/G Pressure Anchorage 0.52 307 WBN-1-LPP-1-20A 755 ESEP Loop 3 S/G Pressure Anchorage 0.52 308 WBN-2-LPP-1-20A 755 ESEP Loop 3 S/G Pressure Anchorage 0.52 309 WBN-1-LPP-1-27B 755 ESEP Loop 4 S/G Pressure Anchorage 0.52 310 WBN-2-LPP-1-27B 755 ESEP Loop 4 S/G Pressure Anchorage 0.52 311 WBN-1-LPP-1-2A 755 ESEP Loop 1 S/G Pressure Anchorage 0.52 312 WBN-2-LPP-1-2A 755 ESEP Loop 1 S/G Pressure Anchorage 0.52 313 WBN-1-LPP-1-9A 755 ESEP Loop 2 S/G Pressure Anchorage 0.52 314 WBN-2-LPP-1-9A 755 ESEP Loop 2 RCS WR Anchorage 0.52 315 WBN-1-LPP-68-68 755 ESEP Pressure RCS WR Anchorage 0.52 316 WBN-2-LPP-68-66 755 ESEP Pressure WBN-1-LPPD Containment Anchorage 0.52 317 755 ESEP 310 Pressure WBN-2-LPPD Containment Anchorage 0.52 318 755 ESEP 310 Pressure WBN-1-LPT Containment Anchorage 0.52 319 755 ESEP 1032 Temperature WBN-2-LPT Containment Anchorage 0.52 320 755 ESEP 1032 Temperature RCS WR Thot Anchorage 0.52 321 WBN-1-LPT-68-1 755 ESEP Loop 1 RCS WR Thot Anchorage 0.52 322 WBN-2-LPT-68-1 755 ESEP Loop 1 RCS WR Tcold Anchorage 0.52 323 WBN-1-LPT-68-18 755 ESEP Loop 1 RCS WR Tcold Anchorage 0.52 324 WBN-2-LPT-68-18 755 ESEP Loop 1

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

RCS WR Tcold Anchorage 0.52 325 WBN-1-LPT-68-41 755 ESEP Loop 2 RCS WR Tcold Anchorage 0.52 326 WBN-2-LPT-68-41 755 ESEP Loop 2 RCS WR Tcold Anchorage 0.52 327 WBN-1-LPT-68-60 755 ESEP Loop 3 RCS WR Tcold Anchorage 0.52 328 WBN-2-LPT-68-60 755 ESEP Loop 3 RCS WR Tcold Anchorage 0.52 329 WBN-1-LPT-68-83 755 ESEP Loop 4 RCS WR Tcold Anchorage 0.52 330 WBN-2-LPT-68-83 755 ESEP Loop 4 PORV AND AFW- 47W600-88 WBN-1-PNL-276- Anchorage 0.52 331 LCV STM GEN 3 757 ESEP L1000

& 4 PNL PORV AND AFW-WBN-2-PNL-276- Anchorage 0.52 332 LCV STM GEN 3 755 ESEP L1000

& 4 PNL PORV AND AFW-WBN-1-PNL-276- Anchorage 0.52 333 LCV STM GEN 1 755 ESEP L1001

& 2 PNL PORV AND AFW-WBN-2-PNL-276- Anchorage 0.52 334 LCV STM GEN 1 755 ESEP L1001

& 2 PNL Incore 47W600-138 WBN-1-PNL-094- Anchorage 0.52 335 Thermocouple 716 ESEP 0008A-J Mon Sys Jbox Incore WBN-1-PNL-094- Anchorage 0.52 336 Thermocouple 716 ESEP 0008B-J Mon Sys Jbox 15W771 480-Volt WBN-0-DPL-360- Functionality 0.68 337 Distribution 742 ESEP 0003A/1, 3B/1 Panel WBN-0-DPL-360- 120/240 VAC Functionality 0.68 338 742 ESEP 0003A/2, 3B/2 Panelboard

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

Hydrogen 45W2772-7 WBN-2-DPL-268- Mitigation Functionality 0.57 45W1770-8 339 782 ESEP 0002-B Distribution Panel Hydrogen 45W2772-7 WBN-1-DPL-268- Mitigation Functionality 0.57 45W1770-8 340 782 ESEP 0001-A Distribution Panel 480 V FLEX DG WBN-0-FUSD-360- Functionality 0.57 341 Pump A - Fusible 742 ESEP DG/AP1, BP/1 Disc Switch 480V FLEX/ESBO 45W204 WBN-0-DG-360- Functionality 0.57 342 225 KVA Diesel 786 ESEP 000A, 000B Generator 6900V 3MW 16W370-1 WBN-0-DG-360- Anchorage 0.87 343 Diesel 742 ESEP 0003A, 3B Generator TD Aux 47W600-6, 9 WBN-1-PMP-003- Anchorage 0.59 344 Feedwater 692 ESEP 0001A-S Pump 1A-S TD Aux WBN-2-PMP-003- Screened 0.59 345 Feedwater 692 ESEP 0002A-S Pump 2A-S WBN-0-PMP-360- Fuel Oil Transfer Functionality 0.57 18N302 346 742 ESEP DG/A1, B1 Pump WBN-1-PMP-360- Functionality 0.5 47W436-1 347 HP FLEX Pump 692 ESEP HP01 WBN-2-PMP-360- Functionality 0.5 348 HP FLEX Pump 692 ESEP HP01 WBN-1-PMP-360- FLEX IP PUMP Functionality 0.5 349 737 ESEP IP01 01 WBN-2-PMP-360- FLEX IP PUMP Functionality 0.5 350 737 ESEP IP01 01 WBN-1-PMP-360- FLEX IP PUMP Functionality 0.5 351 692 ESEP IP02 02 WBN-2-PMP-360- FLEX IP PUMP Functionality 0.5 352 692 ESEP IP02 02

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

FCV SHARED 47W427-14 AFW TANK WBN-1-FCV-003- Functionality 0.83 353 OUTLET PIPE TO 724 ESEP 6386 U1 CONDENSATE FCV FOR AFW 47W427-14 WBN-2-FCV-003- Supply Tank Functionality 0.83 354 724 ESEP 6386 Outlet Piping to U2 Condensate SFP HEAT Maximo Location WBN-0-FCV-070- Functionality 0.69 355 EXCHANGER B 737 ESEP 0194-B CCS SUPPLY SFP HEAT WBN-0-FCV-070- Functionality 0.69 356 EXCHANGER A 737 ESEP 0197-A CCS SUPPLY StaSer&Cntl Air WBN-0-FCV-067- Functionality 0.83 357 Cmpr Supply 713 ESEP 0205 Hdr A Isol valve StaSer&Cntl Air WBN-0-FCV-067- Functionality 0.83 358 Cmpr Supply 713 ESEP 0208 Hdr B Isol valve TD Aux 47W200-6, 9 WBN-1-FCV-001- FeedwaterPmp Functionality 0.7 359 692 ESEP 051 Trip & Throttle Valve TD Aux WBN-2-FCV-001- FeedwaterPmp Functionality 0.7 360 692 ESEP 051 Trip & Throttle Valve ERCW Header B 47W427-1 WBN-2-FCV-003- Functionality 1.14 361 TD AFW PMP 692 ESEP 0179A-B SUCT (PS-144)

ERCW Header A WBN-2-FCV-003- Functionality 1.14 362 TD AFW PMP 692 ESEP 0136A-A SUCT (PS-139)

ERCW Header A WBN-2-FCV-003- Functionality 1.14 363 TD AFW PMP 692 ESEP 0136B-A SUCT ERCW Header B WBN-2-FCV-003- Functionality 1.14 364 TD AFW PMP 692 ESEP 0179B-B SUCT

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

ERCW Header A WBN-1-FCV-003- Functionality 1.14 365 TD AFW PMP 692 ESEP 0136A-A SUCT (PS-139)

ERCW Header A WBN-1-FCV-003- Functionality 1.14 366 TD AFW PMP 692 ESEP 0136B-A SUCT ERCW Header B 47W427-1 WBN-1-FCV-003- Functionality 1.14 367 TD AFW PMP 692 ESEP 0179A-B SUCT (PS-144)

ERCW Header B WBN-1-FCV-003- Functionality 1.14 368 TD AFW PMP 692 ESEP 0179B-B SUCT WBN-1-FCV-067- CCS HX C SUP Functionality 0.92 47W450-4, 19 369 757 ESEP 0147A FROM HDR 1A WBN-1-FCV-067- CCS HX C SUP Functionality 0.92 370 757 ESEP 0458A FROM HDR 1B N2 TANK NO. 1 48W1210 WBN-1-TANK Anchorage 0.63 371 SUPPLY TO 1- 757 ESEP 0402A LCV-003-0173-B N2 TANK NO. 1 WBN-1-TANK-001- Anchorage 0.63 372 SUP TO 1-PCV- 757 ESEP 0405A 001-0012-B N2 TANK NO. 1 WBN-2-TANK-001- Anchorage 0.63 373 SUP TO 2-PCV- 757 ESEP 0405A 001-0012-B N2 TANK NO. 2 WBN-1-TANK-001- Anchorage 0.63 374 SUP TO 1-PCV- 757 ESEP 0405B 001-0012-B N2 TANK NO. 2 WBN-2-TANK-001- Anchorage 0.63 375 SUP TO 2-PCV- 757 ESEP 0405B 001-0012-B N2 TANK NO. 1 WBN-1-TANK-001- Anchorage 0.63 376 SUP TO 1-PCV- 757 ESEP 0406A 001-0030-B N2 TANK NO. 1 WBN-2-TANK-001- Anchorage 0.63 377 SUP TO 2-PCV- 757 ESEP 0406A 001-0030-B N2 TANK NO. 2 WBN-1-TANK-001- Anchorage 0.63 378 SUP TO 1-PCV- 757 ESEP 0406B 001-0030-B

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

N2 TANK NO. 2 WBN-2-TANK-001- Anchorage 0.63 379 SUP TO 2-PCV- 757 ESEP 0406B 001-0030-B N2 TANK NO. 1 WBN-1-TANK-001- Anchorage 0.63 380 SUP TO 1-PCV- 757 ESEP 0407A 001-0023-A N2 TANK NO. 1 WBN-2-TANK-001- Anchorage 0.63 381 SUP TO 2-PCV 757 ESEP 0407A 0023-A N2 TANK NO. 2 48W1210 WBN-1-TANK-001- Anchorage 0.63 382 SUP TO 1-PCV- 757 ESEP 0407B 001-0023-A N2 TANK NO. 2 WBN-2-TANK-001- Anchorage 0.63 383 SUP TO 2-PCV 757 ESEP 0407B 0023-A N2 TANK NO. 1 WBN-1-TANK-001- Anchorage 0.63 384 SUP TO 1-PCV- 757 ESEP 0408A 001-0005-A N2 TANK NO. 1 WBN-2-TANK-001- Anchorage 0.63 385 SUP TO 2-PCV- 757 ESEP 0408A 001-0005-A N2 TANK NO. 2 WBN-1-TANK-001- Anchorage 0.63 386 SUP TO 1-PCV- 757 ESEP 0408B 001-0005-A N2 TANK NO. 1 WBN-2-TANK-001- Anchorage 0.63 387 SUP TO 2-PCV- 757 ESEP 0408B 001-0005-A N2 TANK NO. 1 WBN-2-TANK Anchorage 0.63 388 SUPPLY TO 2- 757 ESEP 0402A LCV-003-0173-B N2 TANK NO. 2 WBN-1-TANK Anchorage 0.63 389 SUPPLY TO 1- 757 ESEP 0402B LCV-003-0173-B N2 TANK NO. 2 WBN-2-TANK Anchorage 0.63 390 SUPPLY TO 2- 757 ESEP 0402B LCV-003-0173-B N2 TANK NO. 1 WBN-1-TANK Anchorage 0.63 391 SUPPLY TO 1- 757 ESEP 0402C LCV-003-0174-B

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

N2 TANK NO. 1 WBN-2-TANK Anchorage 0.63 392 SUPPLY TO 2- 757 ESEP 0402C LCV-003-0174-B N2 TANK NO. 2 WBN-1-TANK Anchorage 0.63 393 SUPPLY TO 1- 757 ESEP 0402D LCV-003-0174-B N2 TANK NO. 2 WBN-2-TANK Anchorage 0.63 394 SUPPLY TO 2- 757 ESEP 0402D LCV-003-0174-B N2 TANK NO. 1 WBN-1-TANK Anchorage 0.63 395 SUP TO 1-LCV- 757 ESEP 0403A 003-0172-A N2 TANK NO. 1 48W1210 WBN-2-TANK Anchorage 0.63 396 SUP TO 2-LCV 757 ESEP 0403A 172-A N2 TANK NO. 2 WBN-1-TANK Anchorage 0.63 397 SUP TO 1-LCV- 757 ESEP 0403B 003-172-A N2 TANK NO. 2 WBN-2-TANK Anchorage 0.63 398 SUP TO 2-LCV 757 ESEP 0403B 172-A N2 TANK NO. 1 WBN-1-TANK Anchorage 0.63 399 SUP TO 1-LCV- 757 ESEP 0403C 003-0175-A N2 TANK NO. 1 WBN-2-TANK Anchorage 0.63 400 SUP TO 2-LCV 757 ESEP 0403C 175-A N2 TANK NO. 2 WBN-1-TANK Anchorage 0.63 401 SUP TO 1-LCV- 757 ESEP 0403D 003-0175-A N2 TANK NO. 2 WBN-2-TANK Anchorage 0.63 402 SUP TO 2-LCV 757 ESEP 0403D 175-A AFW Supply 17W361-2 WBN-0-TANK-003- Anchorage 0.51 403 Tank 500,000 729 ESEP 0226 gallons 6900V 3MW 10W370-4 WBN-0-TANK-360- Anchorage 0.66 404 FLEX DG Fuel Oil 742 ESEP 113 Storage Tank 3A WBN-1-CLR-003- TD Aux FW PMP Functionality 3 47W200-6, 9 405 692 ESEP 0001-B Oil Cooler

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

WBN-2-CLR-003- TD Aux FW PMP Functionality 3 406 692 ESEP 0001-B Oil Cooler WBN-2-RLY-046- Transfer Sw in Chatter 1.55 Rizzo Relay Report 407 692 ESEP 0057-S Aux PosIsol Rly B2-1 Relay AFPT WBN-2-RLY-046- Chatter 1.3 408 Trip & Throttle 692 ESEP B002/1-S Vlv Photo Iso B2-2 Relay AFPT WBN-2-RLY-046- Chatter 1.3 409 Trip & Throttle 692 ESEP B002/2-S Vlv Photo Iso B2-3 Relay AFPT WBN-2-RLY-046- Chatter 1.55 410 Speed Control 692 ESEP B002/3-S InstrPwr BA & BB Relay Rizzo Relay report WBN-2-RLY-046- AFPT Speed Chatter 1.79 411 692 ESEP BA-S Control Buffer Relay BA1 Relay AFPT WBN-2-RLY-046- Chatter 1.79 412 Speed Control 692 ESEP BA1-S Buffer BA & BB Relay WBN-2-RLY-046- AFPT Speed Chatter 1.79 413 692 ESEP BB-S Control Buffer Relay WBN-2-RLY-046- Aux FW Pump Chatter 1.4 414 708 ESEP R/A-A Vlv Sep Relay WBN-2-RLY-046- Aux FW Pump Chatter 1.4 415 708 ESEP R/B-B Vlv Sep Relay WBN-2-RLY-046- AFPT ACC Reset Chatter 1.79 416 692 ESEP R1-S Relay WBN-2-RLY-046- AFPT ACC Reset Chatter 1.79 417 692 ESEP R2-S Relay AFPT SUP Xfer WBN-2-RLY-046- FCV-1-15,-16 & - Chatter 1.79 418 708 ESEP R4-A 51 Sep Relay TR A

Aux Feed Pump WBN-2-RLY-046- TrbStm Supply Chatter 1.62 419 708 ESEP R5-A Xfer Sep Relay TR A

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

Turb/Mtr Driven WBN-2-RLY-046- Chatter 1.4 420 Aux FW Pump 708 ESEP RA1-A Vlvs Aux Relay Turb/Mtr Driven WBN-2-RLY-046- Chatter 1.4 421 Aux FW Pump 708 ESEP RA2-A Vlv SSEP Relay AFPT Pump 2-WBN-2-RLY-046- FCV-1-51 Chatter 1.4 422 708 ESEP RAS-S MtrDrVlv 2-LCV-3-156 & 164 Turb/Mtr Driven WBN-2-RLY-046- Chatter 1.4 423 Aux FW Pump 708 ESEP RB1-B Vlvs Aux Relay Turb Driven Aux WBN-2-RLY-046- Chatter 1.4 424 FW Pump Vlv 708 ESEP RB2-B SEP Relay AFPT Pump 2- Rizzo Relay Report WBN-2-RLY-046- FCV-1-51 Chatter 1.4 425 708 ESEP RBS-S MtrDrVlv 2-LCV-3-171 & 148 AFPT SUP Xfer WBN-2-RLY-046- Chatter 1.79 426 FCV-1-15,-16 & - 708 ESEP SST-S 51 Sep Relay WBN-1-RLY-046- Transfer Sw in Chatter 1.55 427 692 ESEP 0057-S Aux PosIsol Rly B2-1 Relay AFPT WBN-1-RLY-046- Chatter 1.3 428 Trip & Throttle 692 ESEP B002/1-S Vlv Photo Iso B2-2 Relay AFPT WBN-1-RLY-046- Chatter 1.3 429 Trip & Throttle 692 ESEP B002/2-S Vlv Photo Iso B2-3 Relay AFPT WBN-1-RLY-046- Chatter 1.55 430 Speed Control 692 ESEP B002/3-S InstrPwr BA & BB Relay WBN-1-RLY-046- AFPT Speed Chatter 1.79 431 692 ESEP BA-S Control Buffer Relay BA1 Relay AFPT WBN-1-RLY-046- Chatter 1.79 432 Speed Control 692 ESEP BA1-S Buffer

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

BA & BB Relay WBN-1-RLY-046- AFPT Speed Chatter 1.79 433 692 ESEP BB-S Control Buffer Relay WBN-1-RLY-046- Aux FW Pump Chatter 1.4 434 708 ESEP R/A-A Vlv Sep Relay WBN-1-RLY-046- Aux FW Pump Chatter 1.4 435 708 ESEP R/B-B Vlv Sep Relay WBN-1-RLY-046- AFPT ACC Reset Chatter 1.79 436 692 ESEP R1-S Relay WBN-1-RLY-046- AFPT ACC Reset Chatter 1.79 437 692 ESEP R2-S Relay AFPT SUP Xfer WBN-1-RLY-046- FCV-1-15,-16 & - Chatter 1.79 438 708 ESEP R4-A 51 Sep Relay TR A

Aux Feed Pump Rizzo Relay Report WBN-1-RLY-046- TrbStm Supply Chatter 1.62 439 708 ESEP R5-A Xfer Sep Relay TR A Turb/Mtr Driven WBN-1-RLY-046- Chatter 1.4 440 Aux FW Pump 708 ESEP RA1-A Vlvs Aux Relay Turb/Mtr Driven WBN-1-RLY-046- Chatter 1.4 441 Aux FW Pump 708 ESEP RA2-A Vlv SSEP Relay AFPT Pump 2-WBN-1-RLY-046- FCV-1-51 Chatter 1.4 442 692 ESEP RAS-S MtrDrVlv 2-LCV-3-156 & 164 Turb/Mtr Driven WBN-1-RLY-046- Chatter 1.4 443 Aux FW Pump 708 ESEP RB1-B Vlvs Aux Relay Turb Driven Aux WBN-1-RLY-046- Chatter 1.4 444 FW Pump Vlv 708 ESEP RB2-B SEP Relay AFPT Pump 2-WBN-1-RLY-046- FCV-1-51 Chatter 1.4 445 692 ESEP RBS-S MtrDrVlv 2-LCV-3-171 & 148

Elevation IPEEE or ESEP Item # UNID Description Failure Mode HCLPF (g) Elev Reference (ft)

AFPT SUP Xfer WBN-1-RLY-046- Chatter 1.79 446 FCV-1-15,-16 & - 692 ESEP SST-S 51 Sep Relay TDAFW WBN-1-STR-046- Functionality 0.57 447 Trip/Throttle 692 ESEP 0056A-S Motor Starter TDAFW WBN-2-STR-046- Functionality 0.57 448 Trip/Throttle 692 ESEP 0056A-S Motor Starter Reactor Vessel WBNEQ-SOL-009 WBN-1-FSV Screened > 0.5 449 Head Vent 725 ESEP 394 Isolation Valve Reactor Vessel WBN-1-FSV Screened > 0.5 450 Head Vent 725 ESEP 397 Throttle Valve Reactor Vessel WBN-2-FSV Screened > 0.5 451 Head Vent 725 ESEP 395 Isolation Valve Reactor Vessel WBNEQ-SOL-009 WBN-2-FSV Screened > 0.5 452 Head Vent 725 ESEP 396 Throttle Valve