ML101670548

06/08/2010 - Farley Nuclear Plant, NRC Screening Criteria Response

ML101670548
Person / Time
Site:	Farley
Issue date:	06/08/2010
From:	Ajluni M J, Lattner J, Martin R, Sutton D Southern Nuclear Operating Co
To:	NRC/NRR/DIRS/IRIB
Jeremy Bowen, 415-3471
Shared Package
ML101670555	List: ML101670428 ML101670490 ML101670501 ML101670520 ML101670523 ML101670548
References
Download: ML101670548 (7)

Text

Enclosure 4 Farley Nuclear Power Plant Presentation Meeting Summary of the 6/8/2010 Meeting with NRC/SNC/FPL/SCE&G Dated June 17, 2010 Farley Nuclear Plant NRC Screening Criteria Response Mark Ajlun i SNC Nuclear Licensing Manager Dom Sutton SNC Programs Manager Ray Mart in FNP Technica l Services Manager John Lattner FP Principle Engineer June 8, 2010 c 0 .-co U .-l... Q) Q) "'-' 0 .-C l... U S-o CL .-01 C "'-' Ul U C Q) 0 .-Q) ::l .-> Ul CO "'0 C .-::l S-Q) "'-' "0 0 CO .-Q) u LL c l... .-"'-' l... "'-' C OJ c u .-0 c CL 01 ....... (J) ....... U z << * * *

• LL 0 FNP Fire Protection o Introduction

• FNP -Two 900 MWe 3 loop Westinghouse PWR Units

• Committed to 10CFR 50 App R.

• The FNP fire protection program provides defense-in-depth protection:

Design Features Personnel Training Fire Fighting Equipment Operating Procedures NRC Screening Criteria Criteria Applies to Reason/Info FNP Large Number of Operator Yes* FNP is estimated to h ave sign i ficantly less than Actions BFN but more than th e other SNC plants. S i ngl e Fire ca n effect more No* Fire a r eas/equipment re li ed upon for App R safe than one Unit. shutdown are not common. Shared DG's can be im pacted. DG redundancy ensures SSD. Use of Thermop l ast i c Cables Not Some thermoplastic used for low voltage Sign i ficant* applications s u ch as cameras o r te l ecommun i cations. Less tha n 8 % of cab l es installed.

Problems docu m ent in g cable No No signif i cant issues w i th documenting cab l e routing rout i ng. Ana l ysis Credits Se l f Induced No SISBO not cred i ted Stat i on Blackouts Comp li cated Manua l Operato r Yes

• Based on NRC cr i teria. Current manua l act i ons are Actions fe l t to be reasonab l e. Operators are trained and drilled on actions. Compensatory actions in place. M i t i gat ion o f a fire requ i res Not No electr i cal cross connections credited.

Lim i ted the use of systems f r om Sign i ficant use of cross connected a i r systems. N2 backup to mult i p l e units (electrical or PORV's is cred i ted and is not a cross connected mechanical cross-unit t i es). system. Use of Symptom based Yes* A l though decision required, event recogn i t i on is not Procedu r es. req u i r ed.

FNP Fire Protection Initiatives D Initiatives

• Elimination of Kaowool fire wrap by cable reroute to ensure proper cable separation was complete in 2006

• FNP is transitioning to NFPA 805

• Fire PRA Model under development

• Safe Shutdown Analysis Revalidation

• OMA Feasibility Study & Compensatory Actions FNP Fire Protection Summary o OMA along with procedures is the main reason for yes screen criteria o Conservative LOSP assumption has added OMAs o Application of NFPA 805 will significantly reduce OMAs o Thermoplastic cables used in lower voltage applications and low 0/0 o No reliance on cable wrap material proper separation exists for cables. o FNP believes that 3 of the 8 screening criteria are material.