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| number = ML15035A006
| number = ML15035A006
| issue date = 02/04/2015
| issue date = 02/04/2015
| title = 02/04/2015 Meeting Presentation, Diablo Canyon Power Plant Process Protection System Replacement Lessons Learned Using ISG 6 NRC Meeting on Digital I&C.
| title = Meeting Presentation, Diablo Canyon Power Plant Process Protection System Replacement Lessons Learned Using ISG 6 NRC Meeting on Digital I&C.
| author name = Schrader K
| author name = Schrader K
| author affiliation = Pacific Gas & Electric Co
| author affiliation = Pacific Gas & Electric Co
Line 15: Line 15:


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{{#Wiki_filter:DIABLO CANYON POWER PLANTPROCESS PROTECTION SYSTEM REPLACEMENTLESSONS LEARNED USING ISG 6
{{#Wiki_filter:DIABLO CANYON POWER PLANT PROCESS PROTECTION SYSTEM REPLACEMENT LESSONS LEARNED USING ISG 6 NRC Meeting on Digital I&C February 4 4, 2015 Ken Schrader, MS Senior Advisory Engineer PG&E Vice Chairman, PWROG kjse@pge.com 805-545-4328 1


NRC Meeting on Digital I&C February42015 February 4 , 2015Ken Schrader, MSSenior Advisory Engineer PG&EVice Chairman, PWROG kjse@pge.com 805-545-4328 1 1 1 A gendaISG 6 (Licensing Process for Digital I&C System Modifications) Pilot Application and StatusPG&E ISG 6 Positive ExperiencesPG&E ISG 6 Lessons Learned 2
Agenda ISG 6 (Licensing Process for Digital I&C System Modifications) Pilot Application and Status PG&E ISG 6 Positive Experiences PG&E ISG 6 Lessons Learned 2
2 ISG 6 Pilot ApplicationDiabloCanyonispilotplantforuseofISG6Diablo Canyon is pilot plant for use of ISG 6PG&E participated in ISG 6 working groupPG&Esubmittedpilotapplication10/26/11PG&E submitted pilot application 10/26/11 (ML11307A331)ProcessProtectionSystemreplacementProcess Protection System replacementInvensys Tricon V10  (PLCbd)(PLC b ase d)Westinghouse Advanced Logic System(ALS)(FPGAbased) 3 3-(ALS) (FPGA based)
ISG 6 Pilot Application Current StatusInvensys -Factory Acceptance Testing (FAT) completed and equipment deliveredWtihFildiiIV&ViFATW es ti ng h ouse -Fi na l d es i gn i n IV&V rev i ew, FAT scheduled to be completed in May InitialACRSmeetingscompletedwithnorequestedInitial ACRS meetings completed with no requested changesCom p letin g final documentation and will need to pgrespond to final set of RAIsNRC approval expected late 2015 4 4 ISG 6 Pilot ApplicationNRC support of application has been excellentResourcesUse of sharepoint site for documentationEfficientresolutionofopenitemsEfficient resolution of open itemsIdentifying lessons learned from Oconee projectACRSpresentations/meetingsACRS presentations/meetings 5 5 ISG-06 Positive ExperiencesISG6Pre-submittal(Phase0)MeetingsISG 6 Pre submittal (Phase 0) MeetingsNRC feedback critical to completing initial design that did not re quire an y subse quent si g nificant qyqg changesPG&E decided to not use cross channel communications, two-way safety communications, or signal voting in the designVerybeneficialtoreducelicensingandfinancialVery beneficial to reduce licensing and financial risk 6 6 ISG-06 Positive ExperiencesISG6ProcessforuseofApprovedVendorISG 6 Process for use of Approved Vendor Topical Reports (Tier 1, "fast-track")SignificantlysimplifiesLAR(5
-10timessmaller)Significantly simplifies LAR (5 10 times smaller)Can largely reference topical report for compliance with ISG-4, IEEE-603, IEEE 7-4.3.2 Eliminate need for large project team (utility and


vendor)7 7 ISG-06 Positive ExperiencesISG6AllowanceforOpenItemsListandISG 6 Allowance for Open Items List and Public Phone CallsAllowedefficientresolutionofquestionsAllowed efficient resolution of questionsLimited Requests for Additional Information that required docket responses to be minimizedUse of internet sharepoint website for documentsAllowed documents to be viewed by NRC staffFacilitated efficient response to questions 8 8 ISG-06 Lessons LearnedPG&Eoriginaldesignusedsinglenon
ISG 6 Pilot Application Diablo Canyon is pilot plant for use of ISG 6 PG&E participated in ISG 6 working group PG&E submitted pilot application 10/26/11 (ML11307A331)
-safety PG&E original design used single non safety maintenance workstation for both Tricon and ALS  
Process Protection System replacement Invensys Tricon V10 (PLC bbased) d)
Westinghouse Advanced Logic System
    - (ALS) (FPGA based) 3


subsystems in each of four divisions Testing and software requirements following software changes were not considered, became NRC issuePG&EhddittitPG&E c h ange d d es i gn t o use separa t e ma i n t enance computer for each subsystem in each divisionSimplifiesfactoryacceptancetestingrequirementsandSimplifies factory acceptance testing requirements and eliminates potential software interaction issues 9
ISG 6 Pilot Application Current Status Invensys - Factory Acceptance Testing (FAT) completed and equipment delivered W ti h Westinghouse    - Final Fi l design d i in i IV&V review, i   FAT scheduled to be completed in May Initial ACRS meetings completed with no requested changes Completing p    g final documentation and will need to respond to final set of RAIs NRC approval expected late 2015 4
ISG-06 Lessons LearnedPG&EissuedsingleFunctionalRequirements PG&E issued single Functional Requirements Specification for project (applied to both vendors)All functional requirements were not applicable to each d ven d o rResulted in unnecessary difficulty for vendor design, vendor documentation, and NRC review Contributed to vendors not meeting all applicable requirements during detailed design VendorverificationpersonnelandNRCidentifiedissuesVendor verification personnel and NRC identified issues during vendor auditsRequired redesign, extended vendor schedules, complicated NRCi 10 NRC rev i ew ISG-06 Lessons LearnedPG&EdidnotincorporateI&Cmaintenancepersonnel PG&E did not incorporate I&C maintenance personnel expectations to support troubleshooting and maintenance into initial Functional Requirements Sifiti S pec ifi ca ti onsRequired revision to Functional Requirements Specificationtoincludemaintenancepersonnelneeds Specification to include maintenance personnel needsCaused vendors to have to redesign to meet a few new functional requirements 11 ISG-06 Lessons LearnedVendorsdidnotfullyunderstandmeaningofsome Vendors did not fully understand meaning of some functional requirementsNuclear requirements and terminology are uniqueSome vendor design personnel did not have prior nuclear project experience (most PLC and FPGA business is non-


nuclear)Clarifying questions on requirements from vendors occurred late in detailed design, required some redesignUtilitiesneedtoproactivelyensurevendordesignandIV&VUtilities need to proactively ensure vendor design and IV&V personnel have correct understanding of all requirements 12 ISG-06 Lessons LearnedVendorsunderestimatedeffortfordetaileddesign Vendors underestimated effort for detailed designFirst-of-Its-Kind large scope application of each vendor platform to US nuclear plant protection systemNlitdlN uc l ear requ i remen t s an d processes are more comp l exVendor document revisions required to address ISG 6
ISG 6 Pilot Application NRC support of application has been excellent Resources Use of sharepoint site for documentation Efficient resolution of open items Identifying lessons learned from Oconee project ACRS presentations/meetings 5


requirementsTwo year delay occurred in LAR review schedule to address combined aspects of functional requirements specificationchangesredesignandFirst of its Kind specification changes , redesign , and First-of-its-Kind engineering 13 SummaryISG6ISG 6Roadmap to success to develop acceptable License Amendment Re q uest (LAR)q()ISG 6 process will reduce licensing uncertainty and effort for future licensees/vendorsUtilities should strongly consider designs with approved Vendor Topical Reports LARflliISG6ditilLAR s f o ll ow i ng ISG 6 an d i ncorpora ti ng l esson learned from initial plant applications can be approvedintimelymanner 14 14 approved in timely manner ISG 6 Pilot ApplicationProjectScopeProject Scope 15 15 ISG 6 Pilot ApplicationProcess Protection System Replacement Ahitt A rc hit ec t ure 16 16}}
ISG-06 Positive Experiences ISG 6 Pre Pre-submittal submittal (Phase 0) Meetings NRC feedback critical to completing initial design that did not require q      any y subsequent q    significant g
changes PG&E decided to not use cross channel communications, two-way safety communications, or signal voting in the design Very beneficial to reduce licensing and financial risk 6
 
ISG-06 Positive Experiences ISG 6 Process for use of Approved Vendor Topical Reports (Tier 1, fast-track)
Significantly simplifies LAR (5-10 (5 10 times smaller)
Can largely reference topical report for compliance with ISG-4, IEEE-603, IEEE 7-4.3.2 Eliminate need for large project team (utility and vendor) 7
 
ISG-06 Positive Experiences ISG 6 Allowance for Open Items List and Public Phone Calls Allowed efficient resolution of questions Limited Requests for Additional Information that required docket responses to be minimized Use of internet sharepoint website for documents Allowed documents to be viewed by NRC staff Facilitated efficient response to questions 8
 
ISG-06 Lessons Learned PG&E original design used single non-safety non safety maintenance workstation for both Tricon and ALS subsystems in each of four divisions Testing and software requirements following software changes were not considered, became NRC issue PG&E changed h        dddesign i tto use separate    t maintenance i t computer for each subsystem in each division Simplifies factory acceptance testing requirements and eliminates potential software interaction issues 9
 
ISG-06 Lessons Learned PG&E issued single Functional Requirements Specification for project (applied to both vendors)
All functional requirements were not applicable to each vendor d
Resulted in unnecessary difficulty for vendor design, vendor documentation, and NRC review Contributed to vendors not meeting all applicable requirements during detailed design Vendor verification personnel and NRC identified issues during vendor audits Required redesign, extended vendor schedules, complicated NRC reviewi 10
 
ISG-06 Lessons Learned PG&E did not incorporate I&C maintenance personnel expectations to support troubleshooting and maintenance into initial Functional Requirements S
Specifications ifi ti Required revision to Functional Requirements Specification to include maintenance personnel needs Caused vendors to have to redesign to meet a few new functional requirements 11
 
ISG-06 Lessons Learned Vendors did not fully understand meaning of some functional requirements Nuclear requirements and terminology are unique Some vendor design personnel did not have prior nuclear project experience (most PLC and FPGA business is non-nuclear)
Clarifying questions on requirements from vendors occurred late in detailed design, required some redesign Utilities need to proactively ensure vendor design and IV&V personnel have correct understanding of all requirements 12
 
ISG-06 Lessons Learned Vendors underestimated effort for detailed design First-of-Its-Kind large scope application of each vendor platform to US nuclear plant protection system N l Nuclear  requirements i      t andd processes are more complex l Vendor document revisions required to address ISG 6 requirements Two year delay occurred in LAR review schedule to address combined aspects of functional requirements specification changes changes, redesign redesign, and First First-of-its-Kind of its Kind engineering 13
 
Summary ISG 6 Roadmap to success to develop acceptable License Amendment Request  q     ((LAR))
ISG 6 process will reduce licensing uncertainty and effort for future licensees/vendors Utilities should strongly consider designs with approved Vendor Topical Reports LAR ffollowing LARs      ll i ISG 6 and  d iincorporating ti llesson learned from initial plant applications can be approved in timely manner 14
 
ISG 6 Pilot Application Project Scope 15
 
ISG 6 Pilot Application Process Protection System Replacement A hit t Architecture 16}}

Latest revision as of 02:52, 5 December 2019

Meeting Presentation, Diablo Canyon Power Plant Process Protection System Replacement Lessons Learned Using ISG 6 NRC Meeting on Digital I&C.
ML15035A006
Person / Time
Site: Diablo Canyon  Pacific Gas & Electric icon.png
Issue date: 02/04/2015
From: Schrader K
Pacific Gas & Electric Co
To:
Office of Nuclear Reactor Regulation
References
Download: ML15035A006 (16)
v • d • e


Text

DIABLO CANYON POWER PLANT PROCESS PROTECTION SYSTEM REPLACEMENT LESSONS LEARNED USING ISG 6 NRC Meeting on Digital I&C February 4 4, 2015 Ken Schrader, MS Senior Advisory Engineer PG&E Vice Chairman, PWROG kjse@pge.com 805-545-4328 1

Agenda ISG 6 (Licensing Process for Digital I&C System Modifications) Pilot Application and Status PG&E ISG 6 Positive Experiences PG&E ISG 6 Lessons Learned 2

ISG 6 Pilot Application Diablo Canyon is pilot plant for use of ISG 6 PG&E participated in ISG 6 working group PG&E submitted pilot application 10/26/11 (ML11307A331)

Process Protection System replacement Invensys Tricon V10 (PLC bbased) d)

Westinghouse Advanced Logic System

- (ALS) (FPGA based) 3

ISG 6 Pilot Application Current Status Invensys - Factory Acceptance Testing (FAT) completed and equipment delivered W ti h Westinghouse - Final Fi l design d i in i IV&V review, i FAT scheduled to be completed in May Initial ACRS meetings completed with no requested changes Completing p g final documentation and will need to respond to final set of RAIs NRC approval expected late 2015 4

ISG 6 Pilot Application NRC support of application has been excellent Resources Use of sharepoint site for documentation Efficient resolution of open items Identifying lessons learned from Oconee project ACRS presentations/meetings 5

ISG-06 Positive Experiences ISG 6 Pre Pre-submittal submittal (Phase 0) Meetings NRC feedback critical to completing initial design that did not require q any y subsequent q significant g

changes PG&E decided to not use cross channel communications, two-way safety communications, or signal voting in the design Very beneficial to reduce licensing and financial risk 6

ISG-06 Positive Experiences ISG 6 Process for use of Approved Vendor Topical Reports (Tier 1, fast-track)

Significantly simplifies LAR (5-10 (5 10 times smaller)

Can largely reference topical report for compliance with ISG-4, IEEE-603, IEEE 7-4.3.2 Eliminate need for large project team (utility and vendor) 7

ISG-06 Positive Experiences ISG 6 Allowance for Open Items List and Public Phone Calls Allowed efficient resolution of questions Limited Requests for Additional Information that required docket responses to be minimized Use of internet sharepoint website for documents Allowed documents to be viewed by NRC staff Facilitated efficient response to questions 8

ISG-06 Lessons Learned PG&E original design used single non-safety non safety maintenance workstation for both Tricon and ALS subsystems in each of four divisions Testing and software requirements following software changes were not considered, became NRC issue PG&E changed h dddesign i tto use separate t maintenance i t computer for each subsystem in each division Simplifies factory acceptance testing requirements and eliminates potential software interaction issues 9

ISG-06 Lessons Learned PG&E issued single Functional Requirements Specification for project (applied to both vendors)

All functional requirements were not applicable to each vendor d

Resulted in unnecessary difficulty for vendor design, vendor documentation, and NRC review Contributed to vendors not meeting all applicable requirements during detailed design Vendor verification personnel and NRC identified issues during vendor audits Required redesign, extended vendor schedules, complicated NRC reviewi 10

ISG-06 Lessons Learned PG&E did not incorporate I&C maintenance personnel expectations to support troubleshooting and maintenance into initial Functional Requirements S

Specifications ifi ti Required revision to Functional Requirements Specification to include maintenance personnel needs Caused vendors to have to redesign to meet a few new functional requirements 11

ISG-06 Lessons Learned Vendors did not fully understand meaning of some functional requirements Nuclear requirements and terminology are unique Some vendor design personnel did not have prior nuclear project experience (most PLC and FPGA business is non-nuclear)

Clarifying questions on requirements from vendors occurred late in detailed design, required some redesign Utilities need to proactively ensure vendor design and IV&V personnel have correct understanding of all requirements 12

ISG-06 Lessons Learned Vendors underestimated effort for detailed design First-of-Its-Kind large scope application of each vendor platform to US nuclear plant protection system N l Nuclear requirements i t andd processes are more complex l Vendor document revisions required to address ISG 6 requirements Two year delay occurred in LAR review schedule to address combined aspects of functional requirements specification changes changes, redesign redesign, and First First-of-its-Kind of its Kind engineering 13

Summary ISG 6 Roadmap to success to develop acceptable License Amendment Request q ((LAR))

ISG 6 process will reduce licensing uncertainty and effort for future licensees/vendors Utilities should strongly consider designs with approved Vendor Topical Reports LAR ffollowing LARs ll i ISG 6 and d iincorporating ti llesson learned from initial plant applications can be approved in timely manner 14

ISG 6 Pilot Application Project Scope 15

ISG 6 Pilot Application Process Protection System Replacement A hit t Architecture 16

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