ML24114A188

Redacted Updated Safety Analysis Report (WCGS Usar), Revision 37, Calculation XX-E-013, Rev. 4-CN007, Post-Fire Safe Shutdown (PFSSD) Analysis

ML24114A188
Person / Time
Site:	Wolf Creek
Issue date:	04/15/2024
From:	Wolf Creek
To:	Office of Nuclear Reactor Regulation
References
000347
Download: ML24114A188 (1)

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FORM APF-05D-001-02, REV. 12 Page 2 CALCULATION CHANGE NOTICE CCN NO. XX-E-013 - 004 -CN007

Base Calc No. Rev No. Sequence No.

of load tap changer feature of new transformer included w ith clarification it is not PFSSD. XX-E-013-004-CN007 supersedes XX-E-013-004-CN005 in its entirety.

FORM APF-05D-001-02, REV. 12 Page 3 CALCULATION DATABASE INPUT CCN NO. XX-E-013 - 004 -CN007

Base Calc No. Rev No. Sequence No.

Link new systems to the calculation/CCN in EIS.

Systems Affected: NB, MA 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 020021, Enercon Calc. WCN-025-CALC-010 R/1 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 4 ATTACHMENT 1 CCN NO. XX-E-013 - 004 -CN007

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

1-4 None

5(Att. Appendix

1) 1; p63

Appendix 2; p7

Appendix 4; p4,24

OAR None

FORM APF-05D-001-02, REV. 12 Page 5 ATTACHMENT 1 CCN NO. XX-E-013 - 004 -CN007

Base Calc No. Rev No. Sequence No

Vendor calculation WCN-025-CALC-010, Rev 1

CALCULATION COVER CALC NO. WCN-025-CALC-010 SHEET REV. 1

PAGE NO. 1 of 8 Client: WCNOC

Title:

UPDATE TO WCNOC CALCULATION XX-E-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. WCN-025-CALC-010 Rev. 0 Scope of Revision:

Revised Section 1.0, 3.0, and 5.0 and Appendix A for DCP 20021 Rev. 1

Revision Impact on Results:

This calculation documents the changes for the replacement of transformer XNB01.

Study Calculation Final Calculation

Safety-Related Non-Safety-Related

(Print Name and Sign)

Digitally signed by Alex Wurtz See DN: cn=Alex Wurtz, c=US, Originator: Alex Wurtz Date: Alex Wurtzemail=awurtz@enercon.comElectronic Date: 2020.05.06 15:21:20 -

05'00' Signature

Digitally signed by See Stacey Graybeal Design Verifier1 (Reviewer if NSR): Stacey Graybeal Date: Date: 2020.05.06 Electronic 16:09:59 -05'00' Signature

Digitally signed by Austin Tran See Approver: Austin Tran Date: DN: cn=Austin Tran, ou=Enercon Services, Electronic Inc., email=atran@enercon.com, c=US Date: 2020.05.12 14:21:57 -05'00' Signature

Note 1: For non-safety-related calculation, design verification can be substituted by review. bstituted bybybybybybybybybybybybybybybybybybybyby rrrrrrrrrrrrrrrreveveveveveveveveeveveevevevevevevevvieieieieieieieieieieieieieieieeeeeew.w.w.w.wwww.w.www.w.ww.w.w.w.w.w. Digitally signed by Austin Tran DN: cn=Austin Tran, ou=Enercon Services, Inc.,

email=atran@enercon.com

, c=US Page 1 of 8 Date: 2020.05.12 14:22:48

-05'00' CALCULATION CALC NO. WCN-025-CALC-010 REVISION STATUS SHEET REV. 1 PAGE NO. 2 of 8 CALCULATION REVISION STATUS

REVISION DATE DESCRIPTION 0 09/20/2018 Initial Issue 1 04/16/2020 Revised section 1.0, 3.0, and 5.0 and Appendix A

PAGE REVISION STATUS PAGE NO. REVISION PAGE NO. REVISION 3,7,8 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 CALC NO. WCN-025-CALC-010 TABLE OF REV. 1 CONTENTS 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 5 6.0 Methodology 7 7.0 Calculations 8 8.0 Computer Software 8

1. of List of Appendices Pages A - Markup Updates to XX-E-013 4

Page 3 of 8 UPDATE TO WCNOC CALC NO. WCN-025-CALC-010 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 020021 is replacing XNB01 and the new transformer will have a Load Tap Changer (LTC) to control the voltage supplied to 4.16kV bus NB01 even if the 13.8 kV input voltage level changes. The DCP is also replacing/deleting relays in the MA104F 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 XNB01. Two differential current relays (287/T1 Phase B and Phase C) are removed from the calculation (287/T1 Phase A is replaced with one new relay 287/T1 (A,B,C) to monitor all three phases). Also, components 263-1/T1, 263X-1/T1, 263-2/T1 and 263X-2/T1 are removed from the calculation.

New fault pressure trip relays 263FP K4A and 263FP K4B are added because they provide a trip input for breaker NB00112 (XNB01 input breaker to NB01). Cable 15NBK16AA supplies 125VDC to the sudden pressure monitor that contains the two relays at XNB01. Failure of this cable does not cause the relays to change state and cause a loss of power to XNB01.

Therefore, cable 15NBK16AA is not a PSFFD related cable. Drawing E-1F9425 impacted by this change and will be revised by DCP 020021 via WIP-E-1F9425-002-A-1. The proposed changes to XX-E-013 as a result of DCP 020021 are acceptable.

CSP 3.03 Attachment C Page 4 of 8 Revision 2

UPDATE TO WCNOC CALC NO. WCN-025-CALC-010 CALCULATION XX-E-013, REV. 1 PFSSD ANALYSIS PAGE NO. 5 of 8

3.0 References

3.1 Wolf Creek Calculation XX-E-013, PFSSD Analysis, Rev. 4 3.2 E-074-00007, Outline (Trans-Sealed), Rev. W09 3.3 DCP 020021, XNB01 Replacement, Rev. 0 3.4 E-1F9425, Post Fire Safe Shutdown Logic Diagram Support Function

- Electrical, NB001 Off-Site Power Availability, Rev. 2 3.5 E-1F9910, Post Fire Safe Shutdown Fire Area Analysis, Rev. 15 3.6 E-022-00029, Relay Panels and Fabrication Details, (related to MA104F), Rev. W12 3.7 E-022-00043, Transformer Feeder Wiring (related to XNB01), Rev.

W09 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-13NB10, Schematic Diagram 13.8kv XNB01 Breaker Rev. 3 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.

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 020021. Results are as follows:

• XX-E-013-004-CN001 - VOID

• XX-E-013-004-CN002 - FINAL - DCP 14209 removes the HMCP breakers from MCC cubicles NG03DBF6 and NG04DBF6, which were

CSP 3.03 Attachment C Page 5 of 8 Revision 2

UPDATE TO WCNOC CALC NO. WCN-025-CALC-010 CALCULATION XX-E-013, REV. 1 PFSSD ANALYSIS PAGE NO. 6 of 8

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.

• 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.

• 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 exhaust dampers GKHZ0029A/B (Train A) & GKHZ0040A/B (Train B).

The changes per this update do not impact the evaluation performed by this calculation.

• XX-E-013-004-CN005 - COMMITTED - CP 20021 is replacing XNB01 and the change impacts the PFSSD components for XNB01. This revision (revision 1) of this calculation will be accepted by Wolf Creek as a new CCN that supersedes XX-E-013-004-CN005

• XX-E-013-004-CN006 - COMMITTED - CP 12513 is replacing XNB02 and the change impacts the PFSSD components for XNB02. The changes per this update do not impact the evaluation performed by this calculation.

CSP 3.03 Attachment C Page 6 of 8 Revision 2

UPDATE TO WCNOC CALC NO. WCN-025-CALC-010 CALCULATION XX-E-013, REV. 1 PFSSD ANALYSIS PAGE NO. 7 of 8

6.0 Methodology This calculation is a tabulation of cables and components that are required to support the PFSSD power sources and functions. XNB01 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 XNB01. PFSSD components associated with XNB01 are listed in calculation XX-E-013. Some of the components are being removed by DCP 020021. The calculation was reviewed and components 287/T1(B) and 287/T1(C) are removed from the plant and will be removed from the calculation. Relay 287/T1(A) is changed to 287/T1(A,B,C) because the new digital relay monitors all three phases. Fault pressure monitors 263-1/T1 and 263-2/T1 are being removed from the plant and will be removed from the calculation. Auxiliary relays 263X-1/T1 and 263X-2/T1 are being disconnected/

abandoned-in-place and will be removed from the calculation. A new sudden pressure monitor at XNB01 contains trip relays that are used to trip the NB00112 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-1F9425. This drawing update will be addressed in DCP 020021 via WIP-E-1F9425-002-A-1. PK4115 via cable 15NBK16AA supplies 125VDC to the sudden pressure monitor. Failure of this power source or cable does not cause the relays to change state and loss of XNB01. Therefore, PK4115 and cable 15NBK16AA are not required for PFSSD.

CSP 3.03 Attachment C Page 7 of 8 Revision 2

UPDATE TO WCNOC CALC NO. WCN-025-CALC-010 CALCULATION XX-E-013, REV. 1 PFSSD ANALYSIS PAGE NO. 8 of 8

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 C Page 8 of 8 Revision 2

CALC NO. WCN-025-CALC-010 REV. 1

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CALCULATION CALC NO. WCN-025-CALC-010

PREPARATION CHECKLIST REV. 1

CHECKLIST ITEMS1 YES NO N/A GENERAL REQUIREMENTS

1. If the calculation is being performed to a client procedure, is the procedure being used the latest revision?

This calculation is not being performed per a client procedure.

2. Are the proper forms being used and are they the latest revision?

3. Have the appropriate client review forms/checklists been completed?

This calculation is not being performed per a client procedure.

4. Are all pages properly identified with a calculation number, calculation revision and page number consistent with the requirements of the clients procedure?

5. Is all information legible and reproducible?

6. Is the calculation presented in a logical and orderly manner?

7. Is there an existing calculation that should be revised or voided?

This is a revision

8. Is it possible to alter an existing calculation instead of preparing a new calculation for this situation?

9. If an existing calculation is being used for design inputs, are the key design inputs, assumptions and engineering judgments used in that calculation valid and do they apply to the calculation revision being performed.

10. Is the format of the calculation consistent with applicable procedures and expectations?

11. Were design input/output documents properly updated to reference this calculation?

This calculation will be made into a calculation change notice by Wolf Creek.

DCP 020021 will update any required documents associated with this calculation.

12. Can the calculation logic, methodology and presentation be properly understood without referring back to the originator for clarification?

OBJECTIVE AND SCOPE

13. Does the calculation provide a clear concise statement of the problem and objective of the calculation?

This revision does not impact these items

CSP 3.03 Attachment C Page 1 of 7 Revision 2 CALCULATION CALC NO. WCN-025-CALC-010

PREPARATION CHECKLIST REV. 1

CHECKLIST ITEMS1 YES NO N/A

14. Does the calculation provide a clear statement of quality classification?

This revision does not impact this item

15. Is the reason for performing and the end use of the calculation understood?

This revision does not impact this item

16. Does the calculation provide the basis for information found in the plants license basis?

This revision does not impact this item

17. If so, is this documented in the calculation?

This revision does not impact this item

18. Does the calculation provide the basis for information found in the plants design basis documentation?

This revision does not impact this item

19. If so, is this documented in the calculation?

20. This revision does not impact this item

21. Does the calculation otherwise support information found in the plants design basis documentation?

This revision does not impact this item

22. If so, is this documented in the calculation?

This revision does not impact this item

23. Has the appropriate design or license basis documentation been revised, or has the change notice or change request documents being prepared for submittal?

This revision does not impact this item

DESIGN INPUTS

CSP 3.03 Attachment C Page 2 of 7 Revision 2 CALCULATION CALC NO. WCN-025-CALC-010

PREPARATION CHECKLIST REV. 1

CHECKLIST ITEMS1 YES NO N/A

24. Are design inputs clearly identified?

This revision does not impact this item

25. Are design inputs retrievable or have they been added as attachments?

26. If Attachments are used as design inputs or assumptions are the Attachments traceable and verifiable?

This revision does not impact this item

27. Are design inputs clearly distinguished from assumptions?

This revision does not impact this item

28. Does the calculation rely on Attachments for design inputs or assumptions? If yes, are the attachments properly referenced in the calculation?

This revision does not impact this item

29. Are input sources (including industry codes and standards) appropriately selected and are they consistent with the quality classification and objective of the calculation?

This revision does not impact this item

30. Are input sources (including industry codes and standards) consistent with the plants design and license basis?

This revision does not impact this item

31. If applicable, do design inputs adequately address actual plant conditions?

This revision does not impact this item

32. Are input values reasonable and correctly applied?

This revision does not impact this item

33. Are design input sources approved?

This revision does not impact this item

CSP 3.03 Attachment C Page 3 of 7 Revision 2 CALCULATION CALC NO. WCN-025-CALC-010

PREPARATION CHECKLIST REV. 1

CHECKLIST ITEMS1 YES NO N/A

34. Does the calculation reference the latest revision of the design input source?

This revision does not impact this item

35. Were all applicable plant operating modes considered?

This revision does not impact this item

ASSUMPTIONS

36. Are assumptions reasonable/appropriate to the objective?

This revision does not impact this item.

37. Is adequate justification/basis for all assumptions provided?

This revision does not impact this item

38. Are any engineering judgments used?

39. Are engineering judgments clearly identified as such?

This revision does not impact this item

40. If engineering judgments are utilized as design inputs, are they reasonable and can they be quantified or substantiated by reference to site or industry standards, engineering principles, physical laws or other appropriate criteria?

This revision does not impact this item

METHODOLOGY

41. Is the methodology used in the calculation described or implied in the plants licensing basis?

This revision does not impact this item

42. If the methodology used differs from that described in the plants licensing basis, has the appropriate license document change notice been initiated?

This revision does not impact this item

CSP 3.03 Attachment C Page 4 of 7 Revision 2 CALCULATION CALC NO. WCN-025-CALC-010

PREPARATION CHECKLIST REV. 1

CHECKLIST ITEMS1 YES NO N/A

43. Is the methodology used consistent with the stated objective?

This revision does not impact this item

44. Is the methodology used appropriate when considering the quality classification of the calculation and intended use of the results?

This revision does not impact this item

BODY OF CALCULATION

45. Are equations used in the calculation consistent with recognized engineering practice and the plants design and license basis?

This calculation does not use any equations.

46. Is there reasonable justification provided for the use of equations not in common use?

47. Are the mathematical operations performed properly and documented in a logical fashion?.

48. Is the math performed correctly?

49. Have adjustment factors, uncertainties and empirical correlations used in the analysis been correctly applied?.

50. Has proper consideration been given to results that may be overly sensitive to very small changes in input?

This revision does not impact this item

SOFTWARE/COMPUTER CODES

51. Are computer codes or software languages used in the preparation of the calculation?

No computer codes are used in this calculation update.

52. Have the requirements of CSP 3.09 for use of computer codes or software languages, including verification of accuracy and applicability been met?

53. Are the codes properly identified along with source vendor, organization, and revision level?

54. Is the computer code applicable for the analysis being performed?

CSP 3.03 Attachment C Page 5 of 7 Revision 2 CALCULATION CALC NO. WCN-025-CALC-010

PREPARATION CHECKLIST REV. 1

CHECKLIST ITEMS1 YES NO N/A

55. If applicable, does the computer model adequately consider actual plant conditions?

56. Are the inputs to the computer code clearly identified and consistent with the inputs and assumptions documented in the calculation?

57. Is the computer output clearly identified?

58. Does the computer output clearly identify the appropriate units?

59. Are the computer outputs reasonable when compared to the inputs and what was expected?

60. Was the computer output reviewed for ERROR or WARNING messages that could invalidate the results?

RESULTS AND CONCLUSIONS

61. Is adequate acceptance criteria specified?

This revision does not impact this item

62. Are the stated acceptance criteria consistent with the purpose of the calculation, and intended use?

This document does not use acceptance criteria.

63. Are the stated acceptance criteria consistent with the plants design basis, applicable licensing commitments and industry codes, and standards?

This document does not use acceptance criteria.

64. Do the calculation results and conclusions meet the stated acceptance criteria?

This document does not use acceptance criteria.

65. Are the results represented in the proper units with an appropriate tolerance, if applicable?

This document does not use any units.

66. Are the calculation results and conclusions reasonable when considered against the stated inputs and objectives?

67. Is sufficient conservatism applied to the outputs and conclusions?

Conservatism is not required for this document.

CSP 3.03 Attachment C Page 6 of 7 Revision 2 CALCULATION CALC NO. WCN-025-CALC-010

PREPARATION CHECKLIST REV. 1

CHECKLIST ITEMS1 YES NO N/A

68. Do the calculation results and conclusions affect any other calculations?

This output of this calculation does not impact any other calculations.

69. If so, have the affected calculations been revised?

This output of this calculation does not impact any other calculations.

70. Does the calculation contain any conceptual, unconfirmed or open assumptions requiring later confirmation?

No assumptions are used in the calculation update.

71. If so, are they properly identified?

No assumptions are used in the calculation update.

DESIGN REVIEW

72. Have alternate calculation methods been used to verify calculation results?

No alternate calculations are used to support this document update.

Note:

1. Where required, provide clarification/justification for answers to the questions in the space provided below each question. An explanation is required for any questions answered as No or N/A.

Digitally signed by Alex Wurtz SEE ELECTRONIC DN: cn=Alex Wurtz, c=US, Originator: Alex Wurtz Alex Wurtz email=awurtz@enercon.com SIGNATURE Date: 2020.05.06 15:22:28 -

05'00' Print Name and Sign Date

CSP 3.03 Attachment C Page 7 of 7 Revision 2 FORM AIF 05C-002-02, REV. 3A WCNOC OWNERS ACCEPTANCE REVIEW CHECKLIST FOR EXTERNAL CALCULATIONS AND SPECIFICATIONS PAGE

Title:

Post Fire Safe Shutdown (PFSSD) Analysis 1 OF 5

Wolf Creek document #: XX-E-013-004-Revision #: N/A CN007

ECDE: Enercon

INITIATING DOCUMENT and revision: CP 020021 R/1 (e.g., PO, CR, SWO)

CHANGE TYPE: X Calculation Specification

SAFETY CLASS: SR X SS NSR

DigsigVer 5, 0.45 WCNOC Date:

Reviewer 05/19/2020 signature:

DigsigVer 5, 0.45 WCNOC Date: 5/20/2020 Approver:

Prepared By: Init / Date William M. Wilkins WMW 05/19/2020

FORM AIF 05C-002-02, REV. 3A WCNOC OWNERS ACCEPTANCE REVIEW CHECKLIST FOR EXTERNAL CALCULATIONS AND SPECIFICATIONS PAGE

Title:

Post Fire Safe Shutdown (PFSSD) Analysis 2 OF 5

Wolf Creek document #: XX-E-013-004-Revision #: N/A CN007

ECDE: Enercon

No. Question Instructions and Guidance YES NO N/A 1 Do assumptions have All Assumptions should be stated in clear X sufficient documented terms with enough justification to confirm 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 e xpert 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 X compatible with the rationale for the assumption supports the way 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 newbasis.

FORM AIF 05C-002-02, REV. 3A WCNOC OWNERS ACCEPTANCE REVIEW CHECKLIST FOR EXTERNAL CALCULATIONS AND SPECIFICATIONS PAGE

Title:

Post Fire Safe Shutdown (PFSSD) Analysis 3 OF 5

Wolf Creek document #: XX-E-013-004-Revision #: N/A CN007

ECDE: Enercon

No. Question Instructions and Guidance YES NO N/A 3 Do all unverified If there are unverified assumptions without a X assumptions have a tracking mechanism indicated, then create the 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 X have sufficient be identified and be readily retrievable within 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 X correct and reasonable should be able to clearly understand which 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 X compatible with the rationale for the inputs supports the way the 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 X Judgments clearly justification if you were performing this 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

Title:

Post Fire Safe Shutdown (PFSSD) Analysis 4 OF 5

Wolf Creek document #: XX-E-013-004-Revision #: N/A CN007

ECDE: Enercon

No. Question Instructions and Guidance YES NO N/A 8 Are Engineering Ensure the justification for the engineering X Judgments compatible judgment supports the way the plant is 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? X conclusions satisfy the Does the stated purpose match the 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 X conclusions defined system design and operating 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 X on the use of the condition or procedure change? Make sure 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 X been identified and clearly shown within the body of the analysis.

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

Title:

Post Fire Safe Shutdown (PFSSD) Analysis 5 OF 5

Wolf Creek document #: XX-E-013-004-Revision #: N/A CN007

ECDE: Enercon

No. Question Instructions and Guidance YES NO N/A 13 Does the Design Are there sufficient documents included to X Analysis include the support the sources of input, and other reference 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 X analyses been performed to identify any related analyses that 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 X inputs and analysis the current design basis and ensure that any 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 vendorBased on the risk assessment performed during X supporting technical the pre-job brief for the analysis, ensure that documents and sufficient reviews of any supporting documents references (including not provided with the final analysis are performed.

GE DRFs ) been reviewed when necessary?

17 If the design includes digital assets, does it Ensure the design addresses and meets digital and X adequately address cyber security requirements. Refer to AP 15D-008 digital and cyber and contact the Cyber Security Group to perform security requirements? additional reviews prior to approval. The CSAT is required to review modifications impacting Cyber Security.

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