ML21168A162
| ML21168A162 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 06/07/2021 |
| From: | Wolf Creek |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML21168A142 | List:
|
| References | |
| WO 21-0011 | |
| Download: ML21168A162 (21) | |
Text
FORM APF-05D-001-02, REV. 12 Page 1 CALCULATION CHANGE NOTICE CCN NO. XX-E-013 - 004 - CN006 Base Calc No. Rev No. Sequence No.
CALCULATION TITLE - From CALCULATION TITLE field in EIS:
Post-Fire Safe Shutdown (PFSSD) Analysis COMPUTER CODE: VERSION:
Administrative? YES NO ASSOCIATED ENGINEERING CHANGE #: 012513 REGULATORY Attached Evaluation #
REVIEWS:
Attached to: CP 012513 Not Applicable N/A Only if Administrative USAR STATEMENT: Requires a change to the USAR:
Does NOT require a change to the USAR ANY DOCUMENTS YES If yes, enter: SWO #, or Condition Report #, if applicable.
IMPACTED?
NO Status: COMMITTED FINAL VOID SUPERSEDED DigsigOrg 2.8, 0.7 ORIG NA-Vendor Calculation ORIG Printed Name Printed Name Date Date NA Signature Signature QUALIFICATION REQUIRED: ES9280479 QUALIFICATION REQUIRED: ES9280479 DigsigVer 2.8, 0.7 VERF William M. Wilkins 02/24/2020 VERF Printed Name Date Printed Name Date Signature Signature ES9280479 QUALIFICATION REQUIRED: ES9280479 QUALIFICATION REQUIRED:
DigsigApp 2.8, 0.7 APP Jeff Suter 02/26/2020 APP Printed Name Date Printed Name Date Signature Signature DigsigCert 3.5 1.75 DigsigCert 3.5 1.75 Vendor supplied document - WCNOC PE Stamping is not required per WCNOC-162 Rev. 05, Section 8.1.13.
RPE Certification (For ASME Section III Stress Reports/Design Reports, refer to AP 05D-001 for qualification requirements)
CALCULATION SUBJECT (Statement Of Problem) - Enter this in SUBJECT field in EIS:
CP 012513 XNB02 replacement impact to revise relay designations for transformer protection features. Additionally, discussion of load tap changer feature of new transformer included with clarification it is not PFSSD.
FORM APF-05D-001-02, REV. 12 Page 2 CALCULATION DATABASE INPUT CCN NO. XX-E-013 - 004 - CN006 Base Calc No. Rev No. Sequence No.
Link new systems to the calculation/CCN in EIS.
Systems NB, MA Affected:
Develop relationships between interdependent calculations in EIS.
Additional Calculations None Providing Input to this calculation:
Additional Calculations None Impacted by this calculation:
Develop relationships between the calculation/CCN and controlled reference documents in EIS.
Additional None Controlled Documents Inputs to this calculation:
Additional None Controlled Documents Impacted by this calculation:
The reference documents listed below are those that cannot be linked to the calculation/CCN and shall be entered in the INDUSTRY REFERENCE field in EIS, e.g., ASME Codes, ANSI Standards, letters, etc.
Additional Other CP 012513, Enercon Calc. WCN-025-CALC-019 Reference Documents:
Link new components to the calculation/CCN in EIS.
Additional Components: None REFER TO DESKTOP GUIDE FOR PROCESSING CALCULATIONS IN EIS
FORM APF-05D-001-02, REV. 12 Page 3 ATTACHMENT 1 CCN NO. XX-E-013 - 004 - CN006 Base Calc No. Rev No. Sequence No CCN Calc. CCN Calc. CCN Calc. CCN Calc.
Page No. Page Page Page Page Page Page Page Affected No. Affected No. Affected No. Affected DVR/SCRN/ /DVR/SCRN /DVR/SCRN /DVR/SCRN Other /Other /Other /Other 1-3 None 4(Att. Appendix
- 1) 1; p63 Appendix 2; p8 Appendix 4; p17,24 OAR None
FORM APF-05D-001-02, REV. 12 Page 4 ATTACHMENT 1 CCN NO. XX-E-013 - 004 - CN006 Base Calc No. Rev No. Sequence No Vendor calculation WCN-025-CALC-019, Rev 1
CALC NO. WCN-025-CALC-019 CALCULATION COVER SHEET REV. 1 PAGE NO. 1 of 8 Client: WCNOC UPDATE TO WCNOC CALCULATION XX-E-
Title:
013, PFSSD ANALYSIS Project Identifier: WCN-025 Item Cover Sheet Items Yes No 1 Does this calculation contain any open assumptions, including preliminary information, that require confirmation? (If YES, identify the assumptions.)
2 Does this calculation serve as an Alternate Calculation? (If YES, identify the design verified calculation.)
Design Verified Calculation No.
3 Does this calculation supersede an existing Calculation? (If YES, identify the design verified calculation.)
Superseded Calculation No.
Scope of Revision:
Revised Sec. 5.0 and Appendix A to address DCP 12513 90% Comments.
Revision Impact on Results:
This calculation documents the changes for the replacement of transformer XNB02.
Study Calculation Final Calculation Safety-Related Non-Safety-Related (Print Name and Sign)
Digitally signed by Alex Wurtz Originator: Alex Wurtz Alex Wurtz Date: 2020.02.20 13:47:40
-06'00' Date: 2//2020 Digitally signed by Stacey Design Verifier1 (Reviewer if NSR): Stacey Graybeal Graybeal Date: 2020.02.20 14:09:35 Date: 2//2020
-06'00' Digitally signed by Austin Tran Approver: Austin Tran DN: cn=Austin Tran, ou=Enercon Services, Inc., email=atran@enercon.com, c=US Date: 2020.02.20 14:13:33 -06'00' Date: 2//2020 Note 1: For non-safety-related calculation, design verification can be substituted by review.
Digitally signed by Austin Tran DN: cn=Austin Tran, ou=Enercon Services, Inc.,
email=atran@enercon.co m, c=US Date: 2020.02.20 14:14:22
-06'00' Page 1 of 8
CALC NO. WCN-025-CALC-019 CALCULATION REV. 1 REVISION STATUS SHEET PAGE NO. 2 of 8 CALCULATION REVISION STATUS REVISION DATE DESCRIPTION 0 01/30/2019 Initial Issue 1 2//2020 Revised Sec. 5.0 and Appendix A to address DCP 12513 90% Comments.
PAGE REVISION STATUS PAGE NO. REVISION PAGE NO. REVISION 3,6-8 0 1,2,4,5 1 APPENDIX/ATTACHMENT REVISION STATUS APPENDIX NO. NO. OF REVISION ATTACHMENT NO. OF REVISION PAGES NO. NO. PAGES NO.
A 4 1 Page 2 of 8
WCN-025-CALC-CALC NO.
019 TA/BLE OF CONTENTS REV. 1 PAGE NO. 3 of 8 Section Page No.
1.0 Purpose and Scope
4 2.0 Summary of Results and Conclusions 4 3.0 References 5 4.0 Assumptions 5 5.0 Design Inputs 6 6.0 Methodology 7 7.0 Calculations 8 8.0 Computer Software 8
- of List of Appendices Pages A - Markup Updates to XX-E-013 4 Page 3 of 8
WCN-025-CALC-CALC NO.
019 UPDATE TO WCNOC CALCULATION XX-E-013, REV. 1 PFSSD ANALYSIS PAGE NO. 4 of 8
1.0 Purpose and Scope
Wolf Creek is performing a systematic replacement of their large oil-filled transformers to address aging concerns and to implement design improvements in support of long term station operation. ESF Transformer XNB02 is to be replaced prior to the replacement of ESF transformer XNB01.
DCP 012513 is replacing XNB02 and the new transformer will have a Load Tap Changer (LTC) to control the voltage supplied to 4.16kV bus NB02 even if the 13.8 kV input voltage level changes. The DCP is also replacing/deleting relays in the PA201 13.8kV switchgear panel and the relays are addressed by XX-E-013. The purpose of this calculation is to document the impact on Wolf Creek calculation XX-E-013 due to these changes. This calculation is non-safety related per the ENERCON requirements. The Wolf Creek update will be considered special scope per the site requirements.
2.0 Summary of Results and Conclusions Wolf Creek calculation XX-E-013 does not have any computations. It is a document used to identify the components required to support the Post Fire Safe Shutdown (PFSSD) functions. Based on the results of this calculation the addition of the LTC controls will not impact the PFSSD function of XNB02. Two overcurrent relays (287/T2 Phase B and Phase C) are removed from the calculation (287/T2 Phase A is replaced with one new relay to monitor all three phases). Also, components 263-1/T2, 263X-1/T2, 263-2/T2 and 263X-2/T2 are removed from the calculation (no longer required for the sudden pressure alarm/trip function). New fault pressure trip relays 263FP K4A and 263FP K4B are added because they provide a trip input for breaker NB00209 (XNB02 input breaker to NB02). Cable 16NBK16AA supplies 125VDC to the sudden pressure monitor that contains the two relays at CSP 3.03 Attachment E Page 4 of 8 Revision 2
WCN-025-CALC-CALC NO.
019 UPDATE TO WCNOC CALCULATION XX-E-013, REV. 1 PFSSD ANALYSIS PAGE NO. 5 of 8 XNB02. Failure of this cable does not cause the relays to change state and cause a loss of power to XNB02. Therefore, cable 16NBK16AA is not a PSFFD related cable. Drawing E-1F9426 is impacted by this change and will be revised by DCP 012513 via WIP-E-1F9426-002-A-1. The proposed changes to XX-E-013 as a result of DCP 012513 are acceptable.
3.0 References 3.1 Wolf Creek Calculation XX-E-013, PFSSD Analysis, Rev. 4 3.2 E-074-00001, Outline (Trans-Sealed), Rev. W09 3.3 DCP 012513, XNB02 Replacement, Rev. 0 3.4 E-1F9426, Post Fire Safe Shutdown Logic Diagram Support Function
- Electrical, NB002 Off-Site Power Availability, Rev. 2 3.5 E-1F9910, Post Fire Safe Shutdown Fire Area Analysis, Rev. 16 3.6 E-009-00061, Arrangement Diagram, PA02, Rev. W15 3.7 E-009-00198, Connection Diagram (Metal Clad Switchgear, Cust. Unit PA201), Rev. W12 3.8 E-15000, Electrical Cable and Raceway List, Rev. 67 3.9 E-1R4431, Raceway Plan Turbine Building Area-3 EL. 2033-0, Rev.
2 3.10 E-1R4331, Raceway Plan Turbine Building Area-3 EL. 2000-0, Rev.
1 3.11 E-1R4321, Raceway Plan Turbine Building Area-2 EL. 2000-0, Rev.
2 3.12 E-1R4322, Exposed Conduit Turbine Building Area-2 EL. 2000-0, Rev. 5 3.13 E-13NB11, Schematic diagram 13.8 KV XNB02 Feeder BRKR.
252PA0201, Rev. 6 3.14 E-13NB16, ESF Transformers Auxiliary Power and Control Schematic Diagram, Rev. 1 4.0 Assumptions There are no assumptions used in the calculation.
CSP 3.03 Attachment E Page 5 of 8 Revision 2
WCN-025-CALC-CALC NO.
019 UPDATE TO WCNOC CALCULATION XX-E-013, REV. 1 PFSSD ANALYSIS PAGE NO. 6 of 8 5.0 Design Inputs Reviews of existing change notices against XX-E-013 were performed to determine if any of the documents impact the changes being performed by DCP 012513. Results are as follows:
x XX-E-013-004-CN001 - VOID x XX-E-013-004-CN002 - FINAL - DCP 14209 removes the HMCP breakers from MCC cubicles NG03DBF6 and NG04DBF6, which were added as PFSSD components in CCN XX-E-013-002-CN014 per DCP 13800. These breaker cubicles provide power and control functions for Train A and B emergency diesel generator room supply fan motors DCGM01A and DCGM01B, respectively. Due to breaker coordination issues, DCP 14209 will modify the power supply to supply 480 VAC power to the diesel generator room supply fan motors DCGM01A and DCGM01B directly from new load center breakers NG0308 and NG0408, respectively. Breakers NG0308 and NG0408 will supply power to the fan control functions within NG03DBF6 and NG04DBF6, respectively. Therefore, MCC cubicles NG03DBF6 and NG04DBF6 will remain as PFSSD components. The changes per this update do not impact the evaluation performed by this calculation.
x XX-E-013-004-CN003 - COMMITTED - Change Package 14658 is replacing cable from EDGs speed signal generators to the EDGs speed switches. Appendices 1, 2 and 3 are updated to reflect these changes. The changes per this update do not impact the evaluation performed by this calculation.
x XX-E-013-004-CN004 - FINAL - CP 15070 is changing the 120VAC source from system NG to NN for the control room a/c unit inlet and CSP 3.03 Attachment E Page 6 of 8 Revision 2
WCN-025-CALC-CALC NO.
019 UPDATE TO WCNOC CALCULATION XX-E-013, REV. 1 PFSSD ANALYSIS PAGE NO. 7 of 8 exhaust dampers GKHZ0029A/B (Train A) & GKHZ0040A/B (Train B).
The changes per this update do not impact the evaluation performed by this calculation.
x XX-E-013-004-CN005 - COMMITTED - CP 20021 is replacing XNB01 and the change impacts the PFSSD components for XNB01. The changes per this update do not impact the evaluation performed by this calculation.
6.0 Methodology This calculation is a tabulation of cables and components that are required to support the PFSSD power sources and functions. XNB02 is a power source that is required to support the PFSSD functions. The impact of the LTC controls on the PFSSD power supply function was reviewed and determined to not impact the PFSSD power supply function of XNB02. PFSSD components associated with XNB02 are listed in calculation XX-E-013. Some of the components are being removed by DCP 012513. The calculation was reviewed and components 287/T2(B) and 287/T2(C) are removed from the plant and will be removed from the calculation. Relay 287/T2(A) is changed to 287/T2(A,B,C) because the new digital relay monitors all three phases. Fault pressure monitors 263-1/T2 and 263-2/T2 are being removed from the plant and will be removed from the calculation. Auxiliary relays 263X-1/T2 and 263X-2/T2 are being disconnected/
abandoned-in-place and will be removed from the calculation. A new sudden pressure monitor at XNB02 contains trip relays that are used to trip the 252PA0201 breaker on a fault pressure signal, 263FP relays K4A and K4B.
These relays will be added to the calculation. The changes to the relays also impact drawing E-1F9426. This drawing update will be addressed in DCP 012513 via WIP-E-1F9426-002-A-1. PK3207 via cable 16NBK16AA supplies CSP 3.03 Attachment E Page 7 of 8 Revision 2
WCN-025-CALC-CALC NO.
019 UPDATE TO WCNOC CALCULATION XX-E-013, REV. 1 PFSSD ANALYSIS PAGE NO. 8 of 8 125VDC to the sudden pressure monitor. Failure of this power source or cable does not cause the relays to change state and loss of XNB02. Therefore, PK3207 and cable 16NBK16AA are not required for PFSSD.
7.0 Calculations N/A 8.0 Computer Software NONE APPENDIX A - Markups to Calculation XX-E-013 Rev. 4 (4 pages)
CSP 3.03 Attachment E Page 8 of 8 Revision 2
CALC NO. WCN-025-CALC-019 REV. 1
)250$3)'5(9 APPENDIX A PAGE 1 OF 4 APPENDIX 1 CALCULATION NO. XX-E-013 PFSSD FUNCTION EVALUATIONS REVISION NO. 4 (PFSSD SUPPORT) Page 63
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in the "automatic" mode of operation, the LTC controller monitors the 4.16 kV output and adjusts the tap changer position to maintain the NB bus voltage at a set level. A failure of the main LTC 3RVWILUHVDIHVKXWGRZQFRPSRQHQWVSRZHUHGE\QRQVDIHW\UHODWHGSRZHUZHUHHYDOXDWHGWRGHWHUPLQHWKH
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CALC NO. WCN-025-CALC-019 REV. 1 These two relays are no APPENDIX A
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Logic R Fire Relay SSD Sprtd Hot Cold Normal Alt Schematic / Power Feeder Relay ID S/G Relay Name Room Other Drawing Notes Diagram E Area Location Fun Fun Stdby Shdwn Shdwn Shdwn One Line Breaker (E-1F) V 250G/T2 6 Ground Over Current Relay 4401W TURB PA0201 S R, M, H X X X --- E-13NB05 --- PK6204 --- 9426 0 E-13NB11 E-13PA14 263X-1/T2 6 Fault Pressure Relay 4401W TURB PA0201 S R, M, H X X X --- E-13NB11 --- PK6204 --- 9426 0 E-13PA14 263X-2/T2 6 Fault Pressure Relay 4401W TURB PA0201 S R, M, H X X X --- E-13NB11 --- PK6204 --- 9426 0 E-13PA14 287/T2(A)
( ) 6 Phase A Differential Relay 4401W TURB PA0201 S R, M, H X X X --- E-13NB11 --- PK6204 --- 9426 0 E-13PA14 287/T2(B) 6 Phase Ph B Differential Diff ti l Relay R l 4401W 440 44 401W TURB PA0201 S R, R M, M H X X X --- E 13NB11 E-13NB11 --- PK6204 --- 9426 0 E-13PA14 287/T2(C) 6 Phase C Differential Relay 4401W TURB TUR URB PA0201 S R, M, H X X X --- E-13NB11 --- PK6204 --- 9426 0 E-13PA14 1XEF31 1 ESW Pump Motor A Interposing 3301 C-9 RP139 S R, M, H X X X --- E-K3EF01 --- NK4122 XX-E-013-001-CN013 9402A 2 Relay 1XEF33 1 ESW Pump Motor A Interposing 3301 C-9 RP139 S R, M, H X X X --- E-K3EF01 --- NK4122 XX-E-013-001-CN013 9402A 2 Relay Phase A,B,C Differential Current Relay 28 /T2 (A,B,C) These two relays are 1XEF35 1 ESW Pump Motor A Interposing 3301 C-9 RP139 S R, M, H X X X --- E-K3EF01 --- NK4122 XX-E-013-001-CN013 9402A 2 Relay removed from the plant.
3XEG01 1 CCW Pump A Auxiliary Relay 3301 C-9 RP139 S R, M, H X X X --- E-13EG01A --- NK4101 XX-E-013-001-CN013 9401A 2 9401B 3XEG03 1 CCW Pump C Auxiliary Relay 3301 C-9 RP139 S R, M, H X X X --- E-13EG01B --- NK4101 XX-E-013-001-CN013 9401A 2 9401B 62XBB01 1 Pressurizer PORV Block Valve 3301 C-9 RP139 M --- X X X X E-13BB39 --- NG01BBR3 XX-E-013-002-CN002 9301 3 Auxiliary Relay NK4101 62XBB03 1 Pressurizer PORV Block Valve 3301 C-9 RP139 M --- X X X X E-13BB39 --- NG01BBR3 XX-E-013-002-CN002 9301 3 Auxiliary Relay NK4101 63TDEEG02 1 CCW Pump A Auxiliary Relay 3301 C-9 RP139 S R, M, H X X X --- E-13EG01A --- NK4101 XX-E-013-001-CN013 9401A 2 E-13EG01B 9401B 63TDEEG04 1 CCW Pump C Auxiliary Relay 3301 C-9 RP139 S R, M, H X X X --- E-13EG01A --- NK4101 XX-E-013-001-CN013 9401A 2 E-13EG01B 9401B 83XGK03 1 GKHZ0029A/29B Auxiliary Relay 3301 C-9 RP139 S R, M, H X X X --- E-13GK02C --- NG03CLF115 XX-E-013-001-CN013 9442 2 83XGK05 1 SGK05A Indication Circuit Relay 3301 C-9 RP139 S R, M, H X X X --- E-13GK13 --- NG01ACR130 Required to indicate spurious 9444 1 shutdown of SGK05A. Revised in CCN-XX-E-013-000-CN005.
K1119 1 Load Sequencer Relay 3301 C-9 RP139 S R, M, H X X X --- E-13GK13 --- NG01AAF4 XX-E-013-001-CN013 9444 2
CALC NO. WCN-025-CALC-019 REV. 1 APPENDIX A PAGE 4 OF 4 &$/&8/$7,2112;;(
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Logic R Fire Relay SSD Sprtd Hot Cold Normal Alt Schematic / Power Feeder Relay ID S/G Relay Name Room Other Drawing Notes Diagram E Area Location Fun Fun Stdby Shdwn Shdwn Shdwn One Line Breaker (E-1F) V K526 4 Safety Injection Master Relay 3605 C-27 SB032D S R, M, H X X X --- --- M-767-00374 NK4416 --- 9432 0 M-767-00350 NN0412 K713 4 Pressurizer High Pressure Relay 3601 C-27 SB032D M --- X X X --- E-13BB40 M-767-00186 NK4421 BBPCV0456A opens if K713 is 9301 3 E-13SB05 M-767-00189 NN0412 energized. XX-E-013-002-NK4416 CN002 K726 4 Low-Low TAVG or 3605 C-27 SB032D R, H --- X --- X --- E-13AB08 M-767-00188 NK4416 --- 9103 0 ABHS0064 in 'OFF/RESET' Relay NN0412 K727 4 Low-Low TAVG or 3605 C-27 SB032D R, H --- X --- X --- E-13AB11A M-767-00188 NK4416 --- 9103 0 ABHS0064 in 'OFF/RESET' Relay E-13AB11B NN0412 E-13AB11C K728 4 Low-Low TAVG or 3605 C-27 SB032D R, H --- X --- X --- E-13AB11C M-767-00188 NK4416 --- 9103 0 ABHS0064 in 'OFF/RESET' Relay NN0412 K734 4 High-1 RCS Pressure Relay 3605 C-27 SB032D H --- --- X --- --- E-13BB12A M-767-00186 NG02BCF2 --- 9205 0 E-13BB12B M-767-00189 NG02BBF3 NN0412 NK4416 K740 4 Safety Injection Signal Relay 3605 C-27 SB032D H --- --- X --- --- E-13EJ06B M-767-00189 NG02BEF2 --- 9205 0 263FP ( 4A) P 320 E-13SB05 NN0412 NK4416 K741 4 RWST Low-Low 1 Level Relay 3605 C-27 SB032D H --- --- X --- ---
P 320 E-13EJ06B M-767-00189 NG02BEF2 --- 9205 0 E-13SB05 NN0412 NK4416 K811 4 Block Test Relay 3605 C-27 SB033A M --- X X X X E-13BB40 --- NK4421 --- 9301 0 263-1/T1 5 Fault Pressure Switch Relay Yard --- XNB01 S R, M, H X X X --- E-13NB10 --- PK6108 --- 9425 0 263-2/T1 5 Fault Pressure Switch Relay Yard --- XNB01 S R, M, H X 13NB16X X --- E-13NB10 --- PK6108 --- 9425 0 2263-1/T2 6 Fault Pressure Switch Relay Yard --- XNB02 S R, M, H X X X --- E-13NB11 --- PK6204 --- 9426 0 13NB16 E-13PA14 263-2/T2 263 2/T2 6 Fault Pressure Switch Relay Yard --- XNB02 S R, M, H X X X --- E-13NB11 --- PK6204 --- 9426 0 E-13PA14 P 320 is connected to cable 16NB 16AA. This 263FP ( 4B) supplies power to the monitor that houses relays at XNB02. PK3207 and associated cable 16NBK16AA are not required for PFSSD. Loss of power or cable failure will not cause a loss of XNB02.
FORM AIF 05C-002-02, REV. 3A WCNOC OWNERS ACCEPTANCE REVIEW CHECKLIST FOR EXTERNAL CALCULATIONS AND SPECIFICATIONS PAGE 1 OF 5
Title:
Post Fire Safe Shutdown (PFSSD) Analysis Wolf Creek document #: XX-E-013-004- Revision #: N/A CN006 ECDE: Enercon INITIATING DOCUMENT and revision: CP 012513 R/0 (e.g., PO, CR, SWO)
CHANGE TYPE: X Calculation Specification SAFETY CLASS: SR X SS NSR DigsigVer 5, 0.45 02/24/2020 WCNOC Date:
Reviewer signature:
DigsigVer 5, 0.45 2/26/2020 WCNOC Date:
Approver:
Prepared By: Init / Date William M. Wilkins WMW 02/24/2020
FORM AIF 05C-002-02, REV. 3A WCNOC OWNERS ACCEPTANCE REVIEW CHECKLIST FOR EXTERNAL CALCULATIONS AND SPECIFICATIONS PAGE 2 OF 5
Title:
Post Fire Safe Shutdown (PFSSD) Analysis Wolf Creek document #: XX-E-013-004- Revision #: N/A CN006 ECDE: Enercon No. Question Instructions and Guidance YES NO N/A 1 Do assumptions have All Assumptions should be stated in clear sufficient documented terms with enough justification to confirm X rationale? that the assumption is conservative:
For example, 1) the exact value of a particular parameter may not be known or that parameter may be known to vary over the range of conditions covered by the Calculation. It is appropriate to represent or bound the parameter with an assumed value.
- 2) The predicted performance of a specific piece of equipment in lieu of actual test data. It is appropriate to use the documented opinion/position of a recognized expert on that equipment to represent predicted equipment performance.
Consideration should also be given as to any qualification testing that may be needed to validate the Assumptions. Ask yourself, would you provide more justification if you were performing this analysis? If yes, the rationale is likely incomplete.
2 Are assumptions Ensure the documentation for source and compatible with the rationale for the assumption supports the way X way the plant is the plant is currently or will be operated post operated and with the change and they are not in conflict with any licensing basis? design parameters. If the Analysis purpose is to establish a new licensing basis, this question can be answered yes, if the assumption supports that new basis.
FORM AIF 05C-002-02, REV. 3A WCNOC OWNERS ACCEPTANCE REVIEW CHECKLIST FOR EXTERNAL CALCULATIONS AND SPECIFICATIONS PAGE 3 OF 5
Title:
Post Fire Safe Shutdown (PFSSD) Analysis Wolf Creek document #: XX-E-013-004- Revision #: N/A CN006 ECDE: Enercon No. Question Instructions and Guidance YES NO N/A 3 Do all unverified If there are unverified assumptions without a assumptions have a tracking mechanism indicated, then create the X tracking and closure tracking item either through an ATI or a work mechanism in place? order attached to the implementing WO. Due dates for these actions need to support verification prior to the analysis becoming operational or the resultant plant change being op authorized.
4 Do the design inputs The origin of the input, or the source should have sufficient be identified and be readily retrievable within X rationale? WCNOC's documentation system.
If not, then the source should be attached to the analysis. Ask yourself, would you provide more justification if you were performing this analysis? If yes, the rationale is likely incomplete.
5 Are design inputs The expectation is that an WCNOC Engineer correct and reasonable should be able to clearly understand which X with critical input parameters are critical to the outcome of parameters identified, the analysis. That is, what is the impact of a if appropriate? change in the parameter to the results of the analysis? If the impact is large, then that parameter is critical.
6 Are design inputs Ensure the documentation for source and compatible with the rationale for the inputs supports the way the X way the plant is plant is currently or will be operated post operated and with the change and they are not in conflict with any licensing basis? design parameters.
7 Are Engineering Ask yourself, would you provide more Judgments clearly justification if you were performing this X documented and analysis? If yes, the rationale is likely justified? incomplete.
FORM AIF 05C-002-02, REV. 3A WCNOC OWNERS ACCEPTANCE REVIEW CHECKLIST FOR EXTERNAL CALCULATIONS AND SPECIFICATIONS PAGE 4 OF 5
Title:
Post Fire Safe Shutdown (PFSSD) Analysis Wolf Creek document #: XX-E-013-004- Revision #: N/A CN006 ECDE: Enercon No. Question Instructions and Guidance YES NO N/A 8 Are Engineering Ensure the justification for the engineering Judgments compatible judgment supports the way the plant is X with the way the plant currently or will be operated post change and is operated and with is not in conflict with any design parameters.
the licensing basis? If the Analysis purpose is to establish a new licensing basis, then this question can be answered yes, if the judgment supports that new basis.
9 Do the results and Why was the analysis being performed?
conclusions satisfy the Does the stated purpose match the X purpose and objective expectation from WCNOC on the proposed of the Design application of the results? If yes, then the Analysis? analysis meets the needs of the contract.
10 Are the results and Make sure that the results support the USAR conclusions defined system design and operating X compatible with the conditions, or they support a proposed change way the plant is to those conditions. If the analysis supports a operated and with the change, are all of the other changing licensing basis? documents included on the cover sheet as impacted documents?
11 Have any limitations Does the analysis support a temporary on the use of the condition or procedure change? Make sure X results been identified that any other documents needing to be and transmitted to the updated are included and clearly delineated in appropriate the design analysis. Make sure that the cover organizations? sheet includes the other documents where the results of this analysis provide the input.
12 Have margin impacts Make sure that the impacts to margin are been identified and clearly shown within the body of the analysis. X documented If the analysis results in reduced margins appropriately for any ensure that this has been appropriately negative impacts. dispositioned in the EC being used to issue the analysis.
FORM AIF 05C-002-02, REV. 3A WCNOC OWNERS ACCEPTANCE REVIEW CHECKLIST FOR EXTERNAL CALCULATIONS AND SPECIFICATIONS PAGE 5 OF 5
Title:
Post Fire Safe Shutdown (PFSSD) Analysis Wolf Creek document #: XX-E-013-004- Revision #: N/A CN006 ECDE: Enercon No. Question Instructions and Guidance YES NO N/A 13 Does the Design Are there sufficient documents included to Analysis include the support the sources of input, and other reference X applicable design basis material that is not readily retrievable in WCNOC documentation? controlled Documents?
14 Have all affected design Determine if sufficient searches have been analyses been performed to identify any related analyses that X documented on the need to be revised along with the base analysis. It Affected Documents may be necessary to perform some basic searches List (ADL) for the to validate this.
associated Configuration Change?
15 Do the sources of Compare any referenced codes and standards to inputs and analysis the current design basis and ensure that any X methodology used differences are reconciled. If the input sources or meet committed analysis methodology are based on an out-of-date technical and methodology or code, additional reconciliation regulatory may be required if the site has since committed to requirements? a more recent code 16 Have vendor Based on the risk assessment performed during supporting technical the pre-job brief for the analysis, ensure that X documents and sufficient reviews of any supporting documents references (including GE DRFs) been not provided with the final analysis are performed.
reviewed when necessary?
17 If the design includes Ensure the design addresses and meets digital and digital assets, does it cyber security requirements. Refer to AP 15D-008 X adequately address and contact the Cyber Security Group to perform digital and cyber security requirements? additional reviews prior to approval. The CSAT is required to review modifications impacting Cyber Security.
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