GO2-15-034, Northwest'S Fourth Six-Month Status Update Report for the Implementation of NRC Order EA-12-049 Mitigation Strategies for Beyond Design Basis External Events

Northwest'S Fourth Six-Month Status Update Report for the Implementation of NRC Order EA-12-049 Mitigation Strategies for Beyond Design Basis External Events

ML15083A086
Person / Time
Site:	Columbia
Issue date:	03/02/2015
From:	Swank D Energy Northwest
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
EA-12-049, GO2-15-034
Download: ML15083A086 (33)

Text

DavidlA.Swank

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.. iý.. tft . Station GO2-15."_034 ML  ; +:. *'.y~*P.O. Box 968, PE04 Richland, WA 99352-0968 Ph. 509-377-23091 F. 509-377-2354 daswank@ energynorthwest.corn EA-12-049 Marých 2, 2015 -,, . -,-.... . 1O CF.RS.5054(O U.S. Nuclear Regulatory Commission ATTN: Document Control Desk - ..- -- . ,,:

Washington, DC 20555-0001 , '.;..., .,

• ~~~11ik.... Sa) O ENN .39A7 Subject. COLUMBIA STATN ,EXERATING .50497

ENERGY NORTHWEST'S FOURTH SIX-MONTH ORDER EA*;-049

,*REPO~rT F*--TITHEMRPEMENTATION OF-:NR - STATUS UPDATE MITIGATION TITRATEGIES I.OR BEYOND !ESIGN BASIS RTEANAL EVENTS

References:

1.. LetteF dated March 12, 2012, frorn E. &.Leeds (NRC) to Energy Northwest et.al, "Issuance of Order to Modify Licenses with Regard to

,. Requiroment for Mitigation Str*g.es for Beyond-Design-Basis External Events"

2. Letter dated March 12, 2012, from E. J. Leeds (NRC) to Energy Northwest et.al, "Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendations 2.1, 2.3, and 9.3, of the Near-Term Task Force Review of Insights from

,h.q Fukushima Dal-tchi Accident" 3.- Letter.0k02$12- .56dtdOct~b.0OQt2*.from l. A. $wank (Energy Northwest) to the-NRCg .1nfrgy Nqrthwest's Response t9 ;te March 12, 2012..rnformation Request - Communication Assessment" 4.- Letter GO244-, 04dated.February 28#,.20i3ifrom A,,L;Jav0oik, (Energy Noithwest),toNRC ,ýEn r. Northwests Resp,9nse, to NRQ, Order EA,12-04i-'r,: Oy.eri$nttegr~te,$.,lenfor Mitigating .Strategies"

Dear Sir or Madam,

By Reference ; the N.cl,.gulatory . Commission (NRC) issued Order EA-12-049, which required: licensees to dsv*.,,implement, and maintain guidance and strategies for mitigation of:beyQnd-doslgn-basis external events. Reference 4 transmitted the Mitigation Strategies OIP for Columbia prepared in response to Reference 1.

Reference 1 also required submittal of status reports at six month intervals following initial submittal of the OIP. Enclosure 1 to this letter provides Energy Northwest's fourth

ENERGY NORTHWEST'S FOURTH Sl -MO!MTH _T.ATUS UPDA*E,REPOIRT FOR THE IMP EMENTATION OF NRCe R)E8 EA-1.249 MiTiGATiON STFRAtEGIES FOR BEYOND DESIGN BASIS EXTEANAR L EVE INTS Page 2 of 2 six-month status report regarding mitigation strategies.

By Reference 2, the NRC requested that licensees assess the communications systems and equipment that would be used during an emergency.

By Reference 3, Energy Northwest submitted a communications assessment for Columbia, and committed to provide the NRC with the status of the Implementing actions identified in the assessment as part of the six-month status reports prepared in response to Reference 1. Enclosure 2 to this letter provides Energy Northwest's fourth six-month status report regarding the communications assessment.

There are no new or revised regulatory commitments contained in this submittal. Ifyou have any questions or require additional information, please contact Ms. L. L.Williams at (509) 377-8148.

I declare under penalty of perjury that the foregoing is true and correct.

Executed on this eZ_ day of t 5 Olo Respectfully, ,*.: ,-*,,,:.._ **..,: .*:*** , o* . ,.,o, ,* :...,.,*,,.

D. A. Swank *" ': *; Tha.:.

Assistant Vice President, Engineerking

Enclosures:

1) Fourth Six-Month Status Update Report for the Overall Integrated Plan for Mitigation Strategies for Beyond Design Basis External Events

2) Fourth Six-Month Status Update Report for the Implementing Actions Identified in Section 9.0 of the Communication Assessment Contained in Energy Northwest's Docketed Correspondence G02-12-156 (ML12319A079) cc: NRC Region IVAdministrator NRC NRR Project Manager NRC Senior Resident Inspector/988C MA Jones - BPN1 399

ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUS UPDATE REPORT FOR THE.IMPLEMENTATION OF NRC ORDEREA41 2-049 MRITGATION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNALEVENTS, :*. ., .

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ENCLOSURE I COLUMBIA GENERATING STATION, DOCKET NO. FOURTH SIX-MONTH STATUS UPDATE REPORT FOR THE qOVERAJL INTEGRATEQ PLAN FOR MITIGATION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVENTS

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ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EA-12-049 MITIGATION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVENTS Enclosure 1 Page 1 of 24 1.0 Introduction ,.

By Reference 1, the Nuclear Regulatory Commhiioibn (NRCYijuedi Order EA-12042't6 Columbia Generating Station (Columbia):. The bider contain~d requirements for mitigation strategies for beyond-de.pign-basis extemal events. Reference 1 also required submittal of a Mitigation Strategies Overall'integrated Plan (O0P), and submittal of status rel06rts at' six month intervals. This enclosure provides Energy Northwest's fourth six-month status report'.

This fouirth six-month sttus"reirt provides an update of milesto.ne accomplishments and open items slnce' submittal of the third six-month status rel*rt- including any changes to the compliance method or schedule...........

2.0. Milestone Accohplilhmont. .

The followi'*g milestones have been completed since the development of the Overall Integrated Plan andaare c,urrent as of Febru ry 28,, 5.

11) The subittal.oftheofourth six-month status report has been completed.

2) The installation of the FLEX buildings has been completed

3) The Phase 2 staffing study has been completed. ,'

3.0 Milestone Schedule StatU*

The fqljowing tpble is provided as an update to the milestone schedule documented in the initial ,ubmittalof thq.Mitigtiaon qtrategies Overall Integrated Plan. This section provides the activity statup of each item,. and tte. .expected cpmmencemertandcompletion dates,. noting any hanges. As detailed designs progress, milestone actii6s may be expanded, condense.. or deletod.frpr_ e current schedule. The dates are projectedplanning dates and~arealso subject to.oh as design and Implementation details are further developed.

Changes to the Milestone-Schedule made since the previous update are indicated, by a revislon bar. ,

Target Target iktonem ..... Commence- Completion -Activity Statul Correspondence &_Rot ____ _____

Submit 60 Day Initial Mitigation Oct. 2012 Oct. 2012 Completed Strategies Status Report Oct__2012 Oct._2012 Completed Submit Mitigation Strategies Overall Feb. 2013 Feb. 2013 Completed Integrated Plan First Status Update Report for the Mitigation Strategies Overall Aug. 2013 Aug. 2013 Completed Integrated Plan

ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EA-12-049 MITIGATION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVENTS Page 2 of 24 TargMt Target eCommence M Completion Activity Status MileetopesDate Deft______

$eond Status Updat# Aeport for the Mitrition Strategies Ovr46t ,Feb. 2014 Feb. ,2914 Completed Integrated Plan ,.. . , . . ., .

Third Status Update Report for the Mitigation Strategies Overall - "Aug. 2014- Aug. 2014 Completed Integrated "_ _

Fourth Status Update Report-for the "

Mitigabon Strategies Overall Feb. 2015 Feb. 2015 Completed Integrated plan., ...

Fifth Status'Upate Reportforthe . ,

Integ rated t.. e Plan Mitigati'n .Sateg.p. Overall

. j.

a_ .P

.:'n Aug. 2015 Aug. 2015 Not Started SixthStatus uUpdete Report for the .

Mitigtiýtoin Stritigies$Overall Feb 2016 -Feb. 2016 Not Started Integrated Plan "____._. ' _;" __ __ __ -. _

Seventh Status Update Report for " g- .

20.. ' u. N.t. -t"r...

the Mitigation StrategieS Overall !0ý0.201 u Ni Stirted Integrated Plan' ._... ._.-. .

Eighth.Stus Update Re,,ort fcr th* ............ '.....

MitiiOtoStrategles Ovsriffz,4[ Feb. 2017 Feb. 2017 Not Started Integrated Plan.

ftsuance ot Energy-Notthwest.ett~r, ,-

of owmpliance with NRC Order EA-. u..2.0! Aug. 2017 Not Stared 12-049, Ssction IV._;-3,.

Evaluationt fdr Mitigation . .. , ,

0trtienIPhe S,-& 3 Perform E'itneerr6g6Evatua"tions ,Jun.2.013 Apr. 201t startoe E.nglnmwing &.4,*# qt~on4o*

Mitigation h

$t*gle.4* *r o

."18 . . .. .... . .....

Develop inginhee'ngQ06 ign .dr . .. '

Modiflcations Ju..n. -........

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ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EA-12-04 MITIGATION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVENTS Page 3 of 24 Plant Modification Installation ý,;ýApr. 204 Ju 6:12015 Started Flex Support G41delines (FSG) * * . ,

Program & Prociodures: .. ., __,. __.____

Perform FLEX procedure tabletop Dec. 2c)13i . 2015 , tat exercise__ _ _ _ _ __ _ _ _ _ _ _

Develop FSGs .. . JUl.,203.. Apr. 2015 Started Develop testing, dilibratloh, i maintenanice and surveillce' Jan. 2014 Apr. 2015 Started procedures for portable FLEX r ,

equipment FLEX Program Procedural Changes are placed in effedst. ^. , ,015 Jun. 2015 Started Procurement &Stra Plan: ....

Completemodificationand  ; 0 23' -Jun..2614 Completed installation of FLEX buildingM  : .,-:,*0,,,,* ** **:, .

• Procure and store necessary FLEX . 2013 ; Alr 2015 Started r.

portable equipment ______________,

Test portable FLEX equipment . Mar. 2014 Apr. 2015.* Started.

Establish programmatic controls fd5' ...

portable FLEX equipment Jan. 2014 Apr. 2015 Started Mitlgation Stratege Staffing Analysli: _____"__

Perform Mitigatin .strategibs Staffi'n.

Anal~~yis,, ug,,2C14.

.- Dec 214 Completed Operationst*i'aning: ____..___:___

Developmentf Mitigation Stfategies-' mA Prfgram trainin' modules "JanýAOI5, Mar. 2015 -trted Mitiotionl~rt r' 'O:*"* ... ;r' Mitiaing oStratgie Pe r .-,r Ma.. 2015 `u'! Jun.72015 Not Started Operational/Functional Testg of Mitigation Strategis pram SSCs Mar2015'Jun;2015

.. Not Started Final Mitigation Strategies Program Jun J- n N-t-turned overto Operations . Jun..0..5 Jun. 2 Not Started 4.0 Changes to ".. di', *.., .

No additior*.l changqstqe Mbe th of.orplian.e oar igentified.

5.0-, Need for /elef/Re0a0,4n4nd,1BaI soa th1 R~llef/Relaxation The mitigation strategies contained in the initial 0iP (Reference 2) were dependent, in part, on the hardened containment wetwell venting capabilities that were to be implemented by NRC Order EA-1 2-050 (Reference 4) coincident with the implementation of the FLEX

ENERGY NORTHWEST'S FOURTH $IX-MONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EA-12-049 MmGATION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVENTS Page 4 of 24 streteglei. NRC brder EA*.4-09 (Referenceig) riscinded Reference 4 requirements and imposed additional requirements for severe accident capable hardened containment venting capabilities. Consistent with EA-1 3-109 Phase- requirements, Energy Northwest plans to completiiinstallation of the haride'ned-containm'ent Wetweli vent during the spring 2017 refueling outage. However, full cowipllance with EA-12-049 is r-quired by restart from the spring 2015 Columbia refueling oulage.. As:rsqu.ted .! Reference 7 andapproved In Reference 8, ful complince with NRC Qrder-EA*12049.was~relaxed until tllf'i pletion of the spring-2017ref ueling outage to allow iufficienf time to implement a severe accident capable hardened containment wetwell vent.

No additional relief or relaxati iieitd ddioilally, the need for an e.ha'.be*h',ep amendment request to suppbo tndiqrg mndftaons hasnot been identified.

6.0 Open Items from Overaidfnte"reIed`Pli! ,

The following table,provides a sumomary of,e open items documfhted in the initial submittal of ,the1 Mitigatlon 1Strtegies,91PR (eference 2) and Revision I of the Mitigation StrategiesOIP cor*taind. .. the-se.*....ix-month status update (Reference 9),

and responses to NRC Audit". l .ozq nsegrdnthe,0tgation strategies. Changes since the previous update are indicated by a r~visio, .r..

P""g~o straftogle Ove"Q Opf 10""s* e status Llt O1TFLEX-01 FLEX equipment will be stored in structures ctppble o,-fthstanding

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aabove., These6,truc.Ure40arp.generah, y eferred io as AFLEX B~i~idin "9 Two FLEX bj.tings orstructtresowll be -"

utdized to providediverse stpr;geit0cat0Qs $at can Tat in an, appropriate enwironent equpm~etand 11or .anstorq* C e p govid genratgr bA cd powr as necesr h' constructjon of thdestorage fadilities is in pO0g~ress: thelisttof equtpeitpetto be stred -herein Isbeing deyelope, iscluding - -

any vehnc s required to move e ul~ment The or e o equipmrt wthinbuildine tiaýs ebeh .pe cilf. t I Interacti4 " "c..,'+ .imit "" '""'

I-FEX402 - The pq ~ntial failure of a 61rculating water (CW) pipe, coiident With-the ELAP, will be considered to ensure Com.leted that the FLEX storage areas are located such that deployment Completed of at least one set of portable equipment can be accomplished. .... .... ....

O-FLEX Equipment stored outside will be evaluated for Completed seismic interactions, cold weather operation and ashfall. CompIeted

ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUJS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC'ORDER EA-12-649 ;MITIGATION STRATEGIES FOR BEYd?4DtDtGN BASIS EXTERNAL EVENTS Enclosure I Page 56,f 24 Mitigatilen Strategles Overall IntoepAW Plan QPmn Items Stats L.st _ _ _.. . . . ....

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Oi-FLEX-04 -The locations and design of:equipment S,,

cOnnection points are being developed and wiN eheureat least one c6nnection point for the FLEX equipmenit requiresaccess only through seismically robust structures including both -the Completed connection point and any areas that plant personnel willhave to access. : ' -

OI-FLEX-05 -The procedural interfaceftn NEt12;*6 Section 5.3.3.1 (aftefnate instrument readouts) will be developed once Completed the critical monit~drin parameters are identified:. ,

O1-FLEX-06 -. Evaluation of FLEX equlpMertt will "b-cOmpleted to ensure proper functioning under the design basis .Sat temperatures and ashfall conditions.".This includes manual Started actions to traftport gndset up the eq2uipnent,..: v _________.

Ol-FLEX-07 ' Actions will be developed to ensire the :

continued availability of the water inventory sources from the SW ponds in cold weather. In addition, actions will be developed to thaw any frozen service water piping that willbe Completed required in Phase 3. The plan to remov6Jice and. now from equipment haul pathSitunderevaluatio and 'ac#wdvwll be developed as needed.".... ,

(Some 'Assurptionsrnle be knpwoed bythe eopetn of activities developed for HardenedVents)

O-FLEX The sequence of events developed to address We reactor ELAP and LUHS will take into account'sordrCes oft expected coolant inventory loss. (NRC Audit Question 15) The Started

'response Was provided in the August 2014 update, Referertce OI-FLEX MAAP analysis will be peeforded, -The resulting time line will establish the necessary actions that wilr bSe taken to-protect both'the core and containmerit. The revised.tmeline Completed

'was providedin the August 2014 update; letter G02-14-131. ....

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ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EA-12-049 MITIGATION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVENTS Page 6 of 24 Mitigation strt mek Ovema llnkgrated Pn Open Ithome Stue List ds:..

OI-FLEX-1O - GOTHIC calculations will evaluate the effects of a loss of heating, venting and air conditioning (HVAC) on the plant response. An evaluation of the GOTHIC results on equipment qualification will be performed. Areas of the plant requiring access by personnel (including activities identified in the Appendix 1 Tlmeline) will be evaluated to ensure conditions Completed.

will support the actions. (This 01 has been changed.16expticitly include activities identified Inthe Timelidetfor, completeness.)

(NR.C Audit Questions 23, 24, 29, 43 and 44) The resppnse Was provided in the August 2014 update; '.terG02-1 4-1,31.

Reference 10, Pg. 10. " "_ " " __" __ _'

01-FLEX-11. - The design of the permanent structures,'

systems, and components (SSCs) used, to mritige the -ELAP, and LUHS will be verified to be robust w!ithrt-e Completed events, floods .and.hih winds. ,.oI O-FLEX The SBO/ELAP procedure wiP require all lad shed actions to be completen,.1 hour:.,These ioadshd" actions will be validated toensure they Qan be,*co*,ted -...

within this time Iimiit. (This Oi has',een Q.. nged beqause the Completed existing I hour pr.o"dural limit wil be mia.*ntatned: ,is Or has also ben closed because thO changed a*!fp,.h0#b*e, "

completed.) .____:_. ,_____....

OI-FLEX A plant inodificition will be-0,e#ormi.edýto.address ..

the potential for flooding of the RCIC room'frpM0'"lromtetric Completed condenser. ,,.

01-FLEX It is estimated to take 15 minutedto'complete the additional load sherding npcessary for art. The,' - .

minute duration for sheddlhg the additiohallods will be .eleted validated. (This 01 ,has beqn deleted bqcause thoe ELAP-1ad-shed will be combined with the S0 tQod'lWed * *pp-"h i at the start of the event) .......

0O-FLEX The m"¶1mýn tirri: eede or.*r Cbnnretioh of C 480V'FLEX generator0't6'powerthe Div*'ision1.batdes will bte determined.

0l,.FLEX-..1...6. -

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Completed I

,_"r*.. 16 - Portable

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.,EXi;il

n. ' 1.i te*...d nitiiy,

- *:'. ' a or otherwise evaluated to ensure acceptale,p eor, ce.

ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EA-12-049 MITIGATION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVENTS Page 7 of 24 Mitigation Strategies Overll Integrated Plan Open Items Status List 01-FLEX-1I7" The maintenance and testing program for FLEX ...

equipment will be documented Inthe next OIP updat -following Started finalization of the program.

OIFLEX-17.', .. ,-..

The maintenance and testing program for portable FLEX equipment will beadded to the FLEX Program Document. NRC SE Tracker items 33-Band 7-E have been posted to the E-portal. No additiorni OIP updated:wiUbe made.. ".

01-FLEX-1 8- Unavailability of equipmpnt apnd'appicable connections that directlyperform a FL.X: h*otpon.strategy for Started core, containment, aitd spent fuel pool (SFP Wi'l b managed *I in accordance With NEI 12-06.

01-FLEX Procedurst'will ensure that .,ia1ges to the phatit design, physical plant lajout,.roads, building$, a trctures -.

used' for-the storage of p#~rtable FLEX eq*ilpe*nWiti ott adversely impact the appiroved FLEX straf"g, .

01-FLEX Changes to FLEX strategies "It1Ibe assesedt using the change process providedin NEI 12-O6`$ectioni 11.8.

01-FLEX Periodic training wfIl be provided tosit '

emergency response leaders on Beyond Design Basis emergency response strateglef and implmeining Juldelines. Completed (This 01 has been changed to reflect the r~equirdmentfor periodic training stated irVNEI 12-06 parairapli' 1`i6. 2) _ ____

01-FLEX Personnel assigned to direct 6p._'cUu'lrn_ of the ... "

mitigation strategies for Beyond Design Basis6evenýs will -

receive the necessary training to ensure familiarity ?th.the Completed a s so ciated ta s ks.  : "_ "_'_ ___;_ _: _" __

01-FLEX Establish staging area for the receipl.of offsite completed resources. _________

0O-FLEX,24 - EstablIMh site-speoicSAFER RiesOb" ...Plan for Columbia with the NS*C to' defino'and coordinate :NSRC and actions inesonse plan Acl plant  ; .,reo' tO i..'.(his

. eventsi'.;"

s . t.. v n. Is:* 01 has

."(1 ... *,. changed been Completed

.!I to use the formal *sagnation-ft46i playb66k.) -

0O-FLEX Ene'gy N6rttIW6st willpefrrifM' a..n evatationof **,.

the acceptability oLthe Tri-Clties Aip~rrand theYak a" Municipal Airport -a"SAFEA'Stang f866s* (This 01 has been added to reflect the selection of the Tri Cities and Yakima Completed.

Airports.) As a result of the evaluation, the Seattle and Portland airports were chosen as the SAFER staging areas.

ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EA-12,049 MITIGATION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVENTS Page 8 of 24 Phese i 'Cog Cooling: *5 (Some Mitigation Strategiesrelated~tbPh&*~ 1 Core Cooling may be impacted by the completion of ctivties developed for Hardened Vents) 01-FLEX Procedure guidance will be developed to support implemeMntition of Phase 1 Cotd Coolingitrategtes as described in the Overall Interarea Pran. _.___,_

Completed I O-FLEX Strategies for mailntaining core cooling during an ELAP and LUHS event during shutdoward*9refueling *wu be developed, including the necessary actions and eqUiprrnt..

required during"Ph'ds 1, 2, and 3. Energy Northwest will Started.

incorporate the supplWental guidance provided in the.NEV.

position paper entitled Shutdown / RefuelilnModea"to enhance the shutdown nftk process and proCedures. ,,-__,__

OI-FLEX System modifictdors and evaluatims will be completed to support implementation of Phase 1 Core Cooling See Items a - e below strategies as described in theOverall Ihtegratd .Pan.,

a. A reliable containment hardened ent system will be installed to vent heat from the RPVlcontainment-to the atmosphere. Details of this desigh -willbeprovided in the Hardened Vent Overall tltdg~ated:Plan required by C NRC Order EA-1 3-109. The response was provided in letters G02-14-107 and GO2-12_175. _.-_ _._._.._,

b. Analyses of RCIC operation at elevated'ternpetatures have been undertaken by Genetra Electric: Hitachi (GtH) and Energy Northwest todridentf!tchg'ges to-the RCIC pump or turbine necessary~to efile ure reliable Started operation at elevated tenphratures, Energy Northwest wiltevaluate potential actions Including changes to procedures or maintenance praotice or implementation of nibdlfibatlons. ._ ;_ _ ________

-c. An. W~eisment of RCIC system piping, hangers and sulports will be cirkducted at the elevatedtempiratures Started to eiisure satisfa dryperfdn'ance.. Iftdedded,K' ,

"modificatibns will ltperformed. ,'

-d. ýn.eva!uation of the feasibflity tf,de~igningjo. -.....- -

reppowrnng th ba~romeiic con'deps Is level it, will be performed to determine if it carn remain function'aIl6Wmited during anELAP .to provide QntJ,o.- ;.

pJt9ptoftiC .

RCIC-P-4-.__ _ _

ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EA-12-049 MITIGATION STRATEGIES FOR 8EYOND PESIGN BASIS EXTERNAL EVENTS Pege Gof.24

e. MAAP cases using the suppression pool will beare-run using finalized design parameters of the containment hardened vent. The results will be used to define additional actions. (See Open Item Ol-FLEX-09). (This Completed 01 has been changed because the suppression pool will be the credited water sourceior initial RCIC operation.)

01-FLEX GOTHIC analyses Will-be confir ned, or revised, to bound the design of the.hardenrd contai"nmert vent after the started design is finalized. (This 01 has been added to assure that the I subject analyses reflect thedesign requiredby .A-131409.)

Ptrme 100"'o SwegiotI:I' 11,...9todgkwiVAlllnfieid in the OveraIl htegrated Plahrlafed to Phw Containment have been cr&tod due to the poWeotu Of to he Sdideuli for activitiesdeve Ise&2 fprrr e!d Vents -

O-FLEX-27 (continuet '

f. It is anticipated that temporary interim strategies will be developed for venting the containment ,uhtil the ' :!-

completion of containment hardened velnt activities." Deleted (This O has been deleted because an interim vyentng strategy will not be credited for compliance'.yth M-12.

049.) . .. .

g. It is anticipated that revisions to procedures will be developed to implement the temporarny/hterim 'taWtegies for venting the containment until the cMplftion:of containment hardened vent activities '(This ( '9ha"be'n ,

deleted because an Interim venting Str ty'wiliJ* t be credited for compliance with EA-12-049.)

O0-FLEX Prmedure guidance will be.0eVlop tq support implementation of. Phasp 2 Core Cooling strateges.p', , Started ,.-

described in theOverall Integrated Plan. ...... ___....__,,,_

01-FLEX System ýnpl~fications and evaluations will tiq~

completed .suppo t ip. tl of P 2 r "i.g See :itims ,e - d b-aoW2 strategies a4 dpdnbedlin,*0 .Qe.alontegrated Plan.

a. Alternate donnection points wilibe provdbd'to connect FLEX generators to the dltl&l dtstbotto system.

b. An evaluation of.running undergronind:cablirg,froM0th FLEX *Building(s) to the eXistino efctrical coriectio-pointeioutside-iheDiesel Generrator;Butldin wHil'be.- .- Completed..

performed.

ENERGY NORTHWEST'S FOURTH SIX-MONTflISTATUS. UPDATE REPORT FOWTHE.

IMPLEMENTATION OF NRG ORDER EA-12*049MITIGATIQN STRATEGIES FOR BEYOND DESIGN BASIS E)MERNAL EVENTS.

.nclosure 1 Pab§e 10 of 24

c. DG4 or DG5 will have the tapability of providing power to Division I and Division 2: (Thlsr0I has been changed to eliminate duplicatiorn of-OI-FLEX.29.b and to reflecl Completed th6kanned capability of.the FLEX DGs).;-; ,.

...d.- Provisions will be made to allow the installation of hoses through fence(s). (This 01 has beenchanged to reflect a change in the strategy for hose tig with rpspe3, to Completed fences.) 'V.

01-FLEX An evaluation will I5 completed-to ensure a, diverse supply fuel 4f is available, m&Intainedland diverse,.iCompleted means are provided for refueling the portable quiplent.h*

01-FLEX Strategies for mitigating an ELAP and LUHS event during coldishutdown and refueling wlfl be developed as Started.

described in the'Overall Integrated Plan.,.-

01-FLEX-70 -An analysis -wil be perfr`,0,dto6nfirm tat the Phase 2 configuratiorn described in th ,OlPfor suppression pool makeup can provide adequate flow th! 0ughthe i ray header. (This 01 has been deleted as'the su.ppressio pool Deleted makeup will not use the spray nozzles as part of the .pakeup, flow path.) .... .______'______'-___"_"_....

01-FLEX A wind and seismic evaluation ]n a.cc rdln.h with ASCE 7-10 Building Risk Category IVwlt be p frm'ed on the above ground alternate gasQinq tAnk..loe'dito NOu*-the protected ar",. (Thi$ 01 hasilienmi #det ,pll.. npetion of Completed I

-,the subject ovalu~. _________

0I-FLEX EnergyNorth'Wst will establri h-.asite6specfic.

SAFER Response PKan for Columbia With thd NSRC-t6 define and coordinate NSRC a hdLfanteactions In rebpons8 fo events.

Completed I 0O-FLEX-433 -NModifications and evaluations will.be completed to suppoJ~m~q.r, nta4.dn of Phrse3 C~re Co ling stategies See Items a - b below as des6itid inihd veialli nteated.Plain .- ' " +".

a. T*q 'seiparate conhection.poiftwill bd ifth'id t16'r pr*vide critical bus power from a 4160-V ac FLEX Completed rgearatorig*rqm the NSRC).

b. A-'trategyl'ffqcnnectlrqgthptlarge..Ft.l pmp to the . .

SW system "A11be de~elopei. SW "ytey*. pipintg wlbe Q kmplted modified if needed to provide cnen.ctibnjpoints. -. .. .

ENERGY NORTHWEST'S FOURTH SIX-MOUTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EAWt2 i49.&TIGATION STRATEGIES FOR PBYOND DESIGN BASIS EXTERNAL.EVEfTS

.Enclosure 1 Page 11 of 24 O-FLEX The spray pond temperature.i.se while operating in the shutdown cooling mode without sprays will be Completed determined. (This 01 haseen added to determine if cooling tower I ,S P (TMU) pump,:operation pha~imakeup ,,ln. will bo ....needed.) __.. . . _ ..

Procedure guk4ance will be develqped tW6up*r.

implementation of Phase -1,SFP Cooling strategies.t*(As discussedin the Overall IntegratedPlan, the SFP does not requireany action in Phase,,., T/he Inventory of water in the pool is generally maintained -reaterho or.equWa to22feet Deleted above the top of irradiatedfuel assembles stored in the fuel pool. The heat up of the pool water wilmt emve heat.from the stored fuel during Phase 1,therefore this open item can be Deleted) .

OI-FLEX Modifications will be comptetOdto suppoit implementation of Phase 1 SFP Cooling strkegies.

a. SFP instrumentation will be installed to provide reliable indication of the water level in the SFPcoap"ble of supporting identification of the followingpfol water-level:

(1) lev,.that is adequate to support operationof the normalfýul pool cooling system, (2).level: that Is Started adequate.to provide substantial radiation shielding for a person standing on the spent fuel pool operating deck, and (3) level where fuel remains evered and actions to implement make-up watqer ddition should no longer be deferred. Details of thisdedsIgn wli,ba provided in.the Integrated Plan rquired by NRE Order EA,2.-05t.-

Ph&ngj am " ., F, ;3  ;- ý . LU 01-FLEX Procedure guidance will be developed to.support Implementation of Phase 2 SFP Cooling strategies as described in the OIP. (This 01 hes *bqn Added to track the"' Started procedure development needed to sUipp0,0Phase- SFP-.

'.oling.)...

01-FLEX The time that makeup to.the.SR*P must be initiated after an ELAP will be determi*d for a full core offload. . Completed-The response was provided ;n *#e j*gUSt 2014 Update; letter G02-14-131.

Phae 3 SFP .AdllintF L ' t' - '

O-FLEX Procedure guidance will be developed to support Started implementation of Phase 3 SFP Cooling strategies.

ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EA-12-049 MITIGATION $TTSATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVENTS Page 12 of 24 O1-FLEX-36 -.Evaluations will be completed to support implementation of Phase 3 SFP Cooling strategies. ,

a. An evaluation of the ability of the 4160-V ac FLEX

.:,;,,.-ii-Cooling generator,(from (FPC) pumpthe NSRC) will be to repower a An Fuel- Pool completed, evaluation Completed

':,of the ability of the large-capacity FLEX pump (from the NSRC) to provide cooling to the FPC heat exchanger will be compl eted.,

Pame 1 soft AR= "&qytucI=q:

O-FLEX Procedure guidance will. be.developed to support Implementation of Phase! Safety Function .Supportstrateges Completed as described in the Mitigation Strategies Overall Integrated Plan. ,

OI-FLEX System modifications will be .completed to*

support implementation of Phase I Safety Function Support strategies as described Inthe.Abitigation Strategies Over-all Integrated Plan.

a. GOTHIC modeling Is ongoing in: support; f the ELAP that will identify heat loads Inthe key locatiops.betwpen Completed the buildings. This analysis will then define add~itlonal actions that may be required.usinjpodable equipment, or any modifications to isupport operation of irntalled equipment during Phase 1.

No system modifications were required.

I*Q= 3 S m s nItfa*

OI.FLEX An evaluation of the conditions of the residual heat removal (RHR) pump rooms under anELAPevent will be completed to determine Ifadditional actions areleeded tor.. Completed remove heat from the rooms prior toand~during.operation-of the pump. ____.______

A/mmmdl I *.llauma= , ieln::,*,.

O!-FLEX-40 -"Modification'to the sequence of.events.timeline Will beblroAdedil future,9stus update reporteias analyses, strategies and dVafuationi are completed;. Piovidedl as. I:

Appenlix 2 of the'AugustM20.14 update;, letter,GO2,,14,,313 t,.

Noe -Revisldils'to the milestone schedule, are Identified in *NM/A Section., 2 of., this andl subsequent future sta iu'updategreports.

, N.A .

ENERGY NORTHWEST'S FOURTH SIX-MONTh STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EA-12-049 MITIGATION STRATEGIES FOR BEYOND, DESIGN BASIS EXTERNAL EVENTS Enclosure, 1.

Page 13 of 24 Agnendlx 3- concgituaSketc*ha .

01-FLEX Updated sketches will be providedinfuture status reports if needed to reflect changes. (This 01 has been changed because an initial set of sketches were provided in Completed Reference 9, Appendix 3 of Enclosure 3.) Updated-sketches were provided in Attachmentt, of the August 2014 ulpdate; I

letter G02-14-131. __________"____,

01-FLEX-42 --NEI 12-06, Section 5.3.3 Considerakion 2:

"ConsideratiOn should be given to the irmpacts from largb internal flooding sources that -are not seismicalty robust and do not require ac power (e.g..; gravity dralndge fromleike or:!'

cooling basins for non-safety-related coolin'watersystems," Completed will be addressed in futurebl6x-month updateS. (Reipohse to NRC Audit Question 02).The response wasprovided in'the August 2014 update; letter G02-14-131. Reference 10, Pg.

17/28. "

01-FLEX The flooding hazards analysis Will provide information aboutsite water level associated with e probable maximum precipitatiOn (PMP) event anda localihtensb',e precipitation (LIP) event. These water 1evels will be compared to elevations for the FLEX buildings as W1l as the deployment routes for the equipment. A LiDAR survey of the6ite was performed and a topographic plan of the site has be6n Started generated to assist in this evaluation..'The flooding 6ilalois is currently in progress. The results will be used.to provide a response: to this question in a future 0IP-updat6..:(Response to NRC AuditQuestion 03) (This 01 hasibeen changed because the flooding analysis remains in progress an~d th* 01 Qii not closedin the February 2014 update.). _"_,_...__.__.__

01-FLEX A future. update to the OIPwlQ9 addrW*-the..

applicability to Columbia of: each of the nirn'boftiddrations in NEli 2-06; Section 0.2.3.2, Deployment of FLEX.Euipment.

(Response.to. NRC Audit Question 04) (This 0(1 Was bebn "- Started .1 changed because the flooding analysiS femains; in "bhgr*

and the 01 will bedclosed in.;a-f tu~reupdate),"-

01-FLEX The'flooding ahtysis will 69 daed te detbrmine if any of the external flooding procedures should be changed.

• Not Started (Response to NRC Audit Question 04) ..... ..

ENERGY NORTHWET'S FOURTH SIX-MONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDEIR EA-14M1 MITIGATION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVENTS Page 14 of 24 O1-FLEX The NRC has endorsed generic resolutions of concerns regarding use of the MAAP code in mitigation srategies. Energy Northwest will assess the applicability of the genericresolutions to Columbia. (Response'toNRC Audit Question 09) Columbia has completed an assessment of the geneiab resolution of the issues related to use of MAAP4 for our ELAP work. The assessment focused on the limitations imposed by the NRC ofh their acceptance of-the~use of MAAP4 Completed for timeilne purposes as stated in the NRC-letter dated October 3, 2013, from Jack R. avis (NRC) to Joseph E. Pollock (NEI). Columbia has Used MAAP4 for the determination of wetwell vent timing, fuel pool cooling/makeuo timing, and for":

RCIC operability'issesements based on calculated suppression pool ibmorature. All the limitations in the NRC -

• ! . k.

letter have been addressed in the asse~spttwhich is n.1

F,, t ,

available for review uoon reaest. .

OI-FLjX - A review of the current fireptot rng n .. .....

header thowsthat it was designed to Seli icPat'" It standards oUtside Seismic Category I structures. except..o minor portions,. it is buried Inengineeredfil and"isi" arly" protected from the effects of high. winds. and nis~ites. While I~se of the fire protection ring header is an operational Completed convenience, its availabilityis not credit6d: (Resporne toNRC, .

Audit Ouestioh'13). The February 206li 14P update,,..

Reference 9, pg. 26I68,;larified the wording to reflc the above results. "* . ___,__,-__ __

OI-FLEX The NRC has endorsed a gne.r.reooluton.o" ,of concerns regarding use of the MAAP code In mitigation strategies. Energy Northwest will assess the applicability of Completed the generic resolution to Columbia. (ReoponsetoNR Ai.dit, Question 14) See the responsee .Ol-l:X-6 ab '. . ..'.,

o1-FLEX GOTHIC analysesv"f the Vitallsland ":-

evaluate hydrogen, genetation in the."" ttery rdomi.The. '. -

results of those analysej, WIdetert*ine'the need,"fay, for *.,

measures needed to controtChydrogen concentrations in the Completed battiry rooms.., (Response tr NRC.Audit Question-28),The, .

results were reported in the FebruaryOIP 2014 update, Reference 9, pg.. 24/68. .. I -.- . I. __ _ . _

-. . ~ ~ ¶ ~ ~ :i:>....:...

,+"

ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EA-12.049 MITIGATION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVENTS En.closure. 1 Page 15 of 24 01-FLEX At the point when ELAP mitigation activities require tie-in of FLEX generators, in addition to existing electrical interlocks, procedural controls, such as inhibiting generator start circuits and breaker rack-outsi will be employed to prevent simultaneous connection of boththe FLEX generators and Class 1E generators to th.9 same AC distribution system or component. FLEXktiat0eges, ci"'luding the transition from installed iourcos'to portable sources (and vice versa), will be addressed in the FLEX procedure.

(Response to NRC Audit Question 50), -__....._._,

O0-FLEX Energy Northwest will addressthe considerations in NE! 12-06, Section 12.2. (Response to NRC Completed' Audit Question 34) :_IV 01-FLEX-51 description of how CGS has addressed the NEI 12-06,Section 12.2 items:

1) Energy Northwest was actively involved in the industry initittives to establish the Nationat.-SAFER Response Centers (NSRCs~foifmplementation of Phase 3 Mitigation/FLEX strategies at COS. The irOdustry, 9ontracted with the Strategic Alliance for FLEX Emergehijy R,eseponse'ý(SAFER).yorganization through Pooled Equipment Inventory Company (PMlCo) to establish and operate the NSRCs as part of PEICo's existing Pooled lnvyntory Management (PIM) program. The ongoing provisions of the contract with PIM aýddiass the considerations in NEl"19?,6. Section 12.2.

2) Off-site equipment procurement, maintenance, testingealibration, storage, and control Is within the scope of theSAFER team.: As a m.erber of the equipment committee, CGS has the abilitytoensure thatequiprnment specified to support the CGS mitigation strategy meets the necessary;requirement6.

3) . Provisions to inspect and audit the0c SAFER contract.  ; u *'"'

greeents if within the scope of the

4) The SAFER team is contracted bPy the, nuolear industry.through PEICo to establish two NSRCs,. one in Meomphis and -oneir Rhoenix,, operated by the PIM, to maintain the capability to deploy:Phase 3 response equipment such thatmno external single event wilt preclude the capability to supply-the needed-resources to the CGS site. The CGS SAFER Response Plan (SRP) identifies the actions to deploy the CGS Phase 3 eqluijpment from either NSRC.

5) Provisions to ensure that off-site capability will be maintained for pe life ofpe. planesi#.

within the scope of the 9-R ,

6) The SAFER organization has croated lequipment committees associated with the various utilities for the deployment of FLEX Phase 3 equipment. Should CGS's Mitigation/FLEX strategy change such that the supplied equipment requires revision, Columbia has the ability to join an existing equipment committee or form a new equipment committee, as applicable, for the specific equipment.

ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EA-12-049 MITIGATION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVENTS Page 16 of 24

'7) Standard mechanical and electrical connections have been specified for the Phase 3 equipment deployed by the NSRCs.;'The NSRC 4160 VAC generators are connected by cabling to an Emergency Conmection Device :ECD) at the plant. Mechanical connections for the NSRC pump arq standard STORZ connections.

8) 'Pedodi6 maintenance, testing, andcaibPfati* , of the N90RC equipment is within the

.,scope of. the SAFER contract andii'devilolod based, idi part, on vendor recommended maintenance items Periodicity.

9) The quantity,of equipment procured for the NSRCs included provisions for a set of equipment being unavailable during pelnodid tpaintenance intervals, while maintaining the necessary equipment ~a!able to su.pp.rti . P to four units at a single time. This extra equipment to support equipmen! unavail!bility during maintenance activities is within the scope of the SAFER contrac .

10)Spare parts for the NSRC equipment is withithe scop0 of the SAFER contract and was developed as the equipment Was pOt6btied 64W on the equipment nMn!factuier's recommended spare parts iiventory'"lit.

OI-FLEX-52 -,Plant specific ELAP analysis results will be provided in the format ind detail equivalent to NEDC-33771 P.

Energy Northwest will provide the information in a subsequent Completed six-month update. (Resionseto NRC Audit Ques!2n 36)

O-FLEX The issue of maintenance andtiesting of portable FLEX equipment is being addressed and coordinated, onan industry-wide basis. Energy Northwest will continue 10 pnonitor and participate Inthese Industry activities so that it,an develop a maintenance and testing program thatconsistent.withthose meets.'acceptable. .

standards (including NEI 12-06),:and is used generically throughout the Industry.: Energy:Northwest will Started also utilize existing station procedures, coupled with -vendor

-technical information-for establishing preventive.maintetance activities and schedules. The Columbia maintenarce, and testing program for FLEX equipment will be dWcrumentedin the nei0t OIP'update following.firalization of the program.

(Res0nse to NRC Audit'Question 40) __,___,_______... .

. . ., , . .(

, . ..r'

• .*v 42 The maintenance 4'nditesting program for, portableqFEX equipment will be added to the FLEX Program Document. NRC SE Tracker items 33-8 and 7-E have been posted to the E-portal. No additional Qar OIPul~atedwi! be  : . ...

f ...:........................

ENERGYNORTHWEST'S FOURTH,'SIX-MONTH'STATUS-UPDATE REPORTFOR THE' IMPLEMENTATION OF NRC ORDER EAA12-04W1l9 ? 1 TtMION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVOM Page 17 of 24 OI-FLEX Finalize the sizing calculation:for theFLEX generators for phase 2 and 3. Completion of this activityiS necessary to provide a comprehensive response tolthis question (i.e. NRC Audit Question'41,requsttng a.Wummary of the sizing calculation for the FLEX generators to shdw that they Completed can supply the loads assumed in phases 2 and'3). (Response to NRC A6M Question 42) The summary of the swihg calculationwas prroivded in the August 2014 updatelj1etterAi, G02-14-131. Refelnce 10, P. 20/28F> .

OI-FLEX-55

• Finalization of the cat'city and power requirements calculation for Phase 3 is not complete.

Completion of this activity Is necesary to 'provideaa s_

comprehensive response, to this questtoi.i e. NRCAudit Question 45 reqU6ting4a description of the~electdical poWer Completed requirements for Phaset 3 of the mitigating etrategles integrated plan and the capacity of thd power, sources)Q ,(Response to NRC Audit Question 45) Se4,40 -FLEX-54 'Sommm. Above ._,

01-FLEX Not used ..... ........ ....

OI-FLEX Energy. Northwest will validate the. ability to,,

successfully accomplish each bypass undrthe expqcted'.

conditions of a prolonged station blackout as *pgrtp, p #w..,

procedure approval process. Based on tncorporatiqrof the Completed GEH recommended trip bypasses, the poteWnal for equipment protection features to interfere with operation of RCIC will be minimized. (Response to NRC Audit Queston 56ý,_.

01-FLEX Energy Northwest will performwan evaluation to compare (1) the#quantity of water requiredto-dssipate, for 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, the decay heat of the reactqr core and splentiuy! pool during Phases I and 2, (2) the volume of water normally in the Completed spray ponds. (Response to NRC Audit Questiin 05)T' results of that evaluation were reported in the February 29,14 OIP update, Reference 9, pg. 24/68.

OI-FLEX,59- Energy NWthwest's. periodic QIp updstes.will identify anyplanned modipiations that it determin.s may require NRC approvalipey 1,QsQR50,90. (Reeponse.*g N*C Goh1blStd Audit Question 22) Noiplktnned modifications require NRC approval. 11, N. ,- ___:________,____.,_,._,_;

01-FLEX The Spent Fuel Pool septiop of. the PIP W'llbe updated to reflect actions taken in;th pyent of full Core offload to the pool. (Response to NRC Audit Question 24yThe action Completed required to be taken was provided in the August 2014 update; letter G02-14-131. Reference 10, Pg. 21/28.

ENERGY NORTHWEST'S FOURTH SIXMONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDERZEA-12-048.MITGATION STRATEGIES FOR

,.BEYOND DESIGN BASIS EXTEMNAL EVENTS

.Enclosure I

Page 18 of 24 OI-FLEX This issue (early venting) was identified as a

,genenic concern or question which the nu~lear industry will reole generically through the Nuclear Energy Institute (NEI) Completed andthe applicable inr.ustry groups (e.g., BWROG, EPRI, etc.).

(Response to NRC Audit Que#on 25)., Provided in the FebruarY2013 OIP update, Referenceg9i pgs, 36 and 62/68.

O-FLEX An updated schedule for the Energy Northwest identified-..operitems will be includedin the six-month updates of the Columbjp OIP. (Response to NRq Audit Question 46) Completed This was included as Section 6.0 starting with the August 2013 six-month update. - ..

O-FLEX Caiculatiorn NE-02-12-02, -ME.02-12-06, ME.02-12-07, 2.05.0,1 and CMR-1 1179 have been uploaded to the Columbia Fukushima portal. Additional calclations that have been uploaded ýarq listed below. (Response to NRC Audit Question:47). Additional calculations were identified in the August 2014 update;,lette ,O2-14-13t-, efe.rence i10, Pg.

Completed I

22/28. __ _ _ _ _ _ _ _

OP-FLEX Theltimeline in-Appendix I of the February.28, 2013 Overall Integrated Plan' (OIP) for Order EA.12.049 will be revised as necessary to reflect use of the existing ductwork rather than the hardened containment vent. (Response to NRC Deleted Audit Question 58) (This 0H has been deleted because use of ductwork for containment venting will not be'credited.f&s .. -j , , ,

compliance with EA-12-049) -' ,

01-FLEX Energy Northwest will address tfie',6ofrmance ,

to the guidance of NEI. 12-06; Section .3,2.2,Guidirir* (1.).

(Response to NRC AAudit Question 61)' Ib ,Ths osp e was Completed provided inthe August :014 uWiate; letteri Qt,2-131..

Reference 10, Pg: 23/2=... .......... ....

OI-FLEX Toe NEI Oositoh pae1r ...... .t..ons for licensees to incorporatb,'the following template WOrdipg jnto.

th*i40OIPs:

"(Naie-of licensee) will incorporate the supplemental gISdance prRqed Inthe NEI position paper entitled Completed hitdown f efueling Modes" to enhance the shutdown risk processandlprocedures." *, .. .- -, I (Response toNRC Audit Question 62A)' Eergy-Ndihwt' ".

incorporated this template wording into'the.Februay:0t14 *t*P t ' ' "

update, Reference 9, ls. 20, 22, and 26/68.8, *" __,,_,_______-

,.*.: * ,.  ::.'*. . ,;, ,, a'i , ' .,W,. - ,' . .* .*I,--",: , u * . .."

ENERGY NORiT. WEST'S FOURTH SIX-MONTHfStATUS.UPDATE REPORT FOR THE IMPLEMENTATIOI)OF NRC ORDER E,12.04MMITIGATtON STRATEIESFOR BEYPNDODES)GWBASIS EXTERNAL EVENTS EnclosUre 1 Page 19.of 24 OI-FLEX The NEI white paper Includes Instructions for licensees to incorporate the following template Vordlng into their OIPs.*

"[Insert Licensee] confirms that the FLEX strategy station battery run-time was calculated In accordance with the IEEE-485 methodology using manufacturer discharge test data applicable to the licensee's FLEX strategy as outlined in the NEI white paper on Extended Battery Duty Cycles.

The detailed licensee calculations, 'uppbrtirn vendoh discharge test data, FLEX strategy batterY load profilb, and' other inputs/in tlal conditions requiredl by. IýEE246 will be Completed available on the licensee's web portal for documents and calculations. Thetime margin between the'calculated I, station battery rdn-time for the FLEX sttategy-and the expected deployment time for FLEX equipment to supply.the dc loads Is r8] hours.,,.

Energy Northwest will incorporate this tempa.t6 Wodin.g nt*o 6 future OIP update., (Resionse to NRC AIdkit uestfio'62B)(Thid 01 has been changed because the validation of actual time deploying the 480-V ac FLEX generators par'0,-FLEX-1 5 has not been completed.)

OI-FLEX-67 This wording was Incorporated In'Revislon i of the 6IP subMifted in letter G02-14-031, dated February 28, 2014. The battery apcity ' has since been determined in accordance with IEEE-485 and hasa minimum ca' city] of . ho6rs!

01-FLEX The load Shedding proCedUre isWin the process of '.*

being developed. The procedure will alig'direct operators to depressurze the main generator manually :if the generator is.

pressurized with hydrogen before sheddingithe airnside seat oil Completed backup pump. These actions are expected top..recludea, potential fire and/or explosion from the hydtogeirn. : (Reslonse to NRC Audit Question 50) 7,0 Interim Staff EvaAUIn Reference 6 tiansrnitted an NRC Interim Staff Evaluation and.Audit Report (!SE) which documented the results of a review. of the, Golumbla O!Pf*pRference 2), six-month update (Reference 3), and information obtained through the NRC'sr,0'gation strategies audit process. The ISE documented thewstaffs conclusion that Energy Northwest has provided sufficient information to determine that therezis-redsornable assurance that the OIP, when properly implemented, will meet the requirerenhts'of Order EA-12-049 at Columbia. That conclusion was based on the assumption that Energy Northwest would implement the OIP as described, including the satisfactory resolution of the Open and Confirmatory Items tabulated

ENERGY NOFrTHWEST'S FOURTH PIX-MONTHSTATUS UPDATE REPORT FOR THE

!MPLEMENTATION OF NRC ORDER, EA-12-049MITIGATION STRATEGIES FOR 1BEYOND DESIGN BASIS EXTERN#,LýEVEN.TS

-Page 20 of 24 in the ISE. The Open Items and Confirmatory Items tabulated in the ISE are listed below.

Energy Northwest will coordinate with the staff to facilitate closure of the Open and Confirmatory Items.

OPEN ITEMS Item ..., SE Tracker Audit Number .r Item Number With*egrdto maintaining containment, the implementation of 3.2.3.A BWROG EPG/SAG, Revision spedflc'evaluatlons, 3, includingInany must be'coroptefed associated acbordance withplant the 13-A provisions

• , : .' of NRC a,' ... letter dated a: , . . 9, January , 2014.

The Ikcensee's proposed strategy for.maJnWt contaifment will rely onJnstallatlon of the HCYS as required by Order f.A-13-109. When complete, the licensee's calculations supporting 3.2.3.6 the revised containment response and t1quenoe of everltts 14-A timellne shouldbe reviewed to confirm that the timeline is -

appropriate and that containmentfunctions.witl be restored'and maintained following an ELAP event.

CONFIRMAToRY ITMS Item SE Tracker Audit Number Item Number During the audt, the Iloegosee statedl .hat NE1?I -8Sectkqpi,,

5.3.3, cohs"iration 2 (jmpacts froim large if "e-rn, flooding sourfes), %Willbe addressed Infuturi slx-mo .pthupdates of the 1-A Integrated Plan. Corfirm that the strotegioa consider large internal flooding sources that are not seismically robust and do not require ac power, as neces*!r.,

The licensee stated that Informatin $elatetoCOlumbia's 1 considerations of the potential effects _V a loW69 intense' precipitation event wilt be included ir theFebKarV'2014 update to the Integrated Plan. Confirm that FLEX equipment can be 3.1.2.1 .A adequately protected and deployed Insuch an event, and 2-A whether flooding procedures"properly 1&co~untfor*tItUsb of FLEX equipment. [En"rgy Northwest note:,The.dateotfrthe associated OIP update~hsbeeh chanr d s t'ed in the 01-

_______FLEX-43 status above.)______

When Columbi,,s plain for 'h'. fl

.6orda...' is . .

.2.4.A developed, confirm thatit 'dequatei 6.r.sses po.entil . 3-A 3.1.2.4.A regional pacts Ion transpowtatlic and extr ey.of coffte3.

equipme .nt duM6n "anextrem re§ional ficioding'event,. and-during conditions of snow, ice, and extreme cold.

ENERGY NORTHWEST'S FOURTH, SIX-MONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC OPRDER EA-12-049 MITIGATION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL. EVENTS .

Page.. 2 1.,' of 24 Confirm that the spray ponds contain enoughwater to 3.1.3.A dissipate, SFP duringforPhases 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, the2,decay heat of thei reactor I and with sufficient margin to core and account for some potential loss of inventory due to a tornado.

Confirm that the transport of FLEX equipment is addressed 3.1.4.2.A during cold weather conditions, including Ice and snow removal 5-A frgmapproprlate haul paths., .; , ,

Regarding the use of the ModularAccident Analysis Program 3.2.1.1.A-E (MAAPI 4 code for slniUlating arrELA event for BWNs, the NRC ehidorsed the g Anerc.Ju e 203 !NEt positionpa-per,,with 6-A, five condItions, as stated inSectin 32*211 -of the TER. TWe; donditions are identifled as 6wifirrrry Items 3.*i.I When the licensee's evaluations related to its open item 01-3.2.12.A FLEX-08leakaAe.rom system are completed,.confirm the rcir"fitkthat lssues relatedhave up sea.ls to pmary been 7-A adequately idd~esed.-

The licensee Mi notcompleted calculations supporting the 3.2.1.4.A design equipmentof the FLEX equipment.

i aadequate to performConfirm that portable FLEX its creditedmfgitlon- 8-A

___ __ _ f unctc (s). ______________

Confirm completion of licensee's open 0IfEX-05, jto which 3.2.1.5.A states, "The (alternate procedural Instrument Interfacewillinbe readou$) NEIdeveloped:once 12-06, Section the 5.3.3.1 critical monitoring parametersgSredelntlfled'.  : . -

W.heq the GQTHIC analyses ar* coomplted and slant fuel pool cooling strategies are fully developed,.0nfirnthat the, 3.2.2.B licensee's strategy for venting of the refuelin -floor is conpistent 10-A with guidance. InNEI 12-06, or provides an acceptable alternative to that guidance.

When complete,*cOrnirm that the lIcehsee'S Strategy and :

3.2.2.C actions during ari ELAP when a f~ll core offload Isinthe SFP 11-A are adequate to maintain satisfactory SFP cooling.

Confirm that Coliumbia's SFP1niakeup0strat ypri6lides for' 3.2.2.D $FP makeup withqut ac9ssingth#.refut*Ang91 0or, as 12-A recommended In,NEI 12-06, Table 3-1. an. 1iboast ,,or that an acqptable ateMate 4aoroach is d"alo *-.,

ENERGY NORTkWEST'S FOURTH SDX-M* STATUS UPOATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EA-12049 MmGATiON STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVENirs Encilsure 1 Page 22 of 24 Confirm that the licensee's analysis of hydrogen buildup in the 3.2.4.2iA.1 battery room Approprlately considers measures needed to 15-A control hydrogn ooncentratiqs. .

3.2.42k2 Confirm the licensee's evaluation of the need for forced 16-A I

ventilation on the refuelingfior. ,

3.2.4.2.B Confirm ro*m, SFP thatarea, the GOTHIC analyses and battery, appropriately address; RCIC R~room;tempertureg. ,

17-A The licensee itated that Itwill iddrei theikonsiderations in NEI 12-06, Section 32.2, Guideifle-l12), related to potential 3.2.4.3.A loss of heat tracing, Inan Integrated Plan update no later than 18-A August 28, 2014. Confirm that heat tracing Is appropriately considered., ' .

The NRC staff reviewed the licensee's communications 312.4.4 A 4pss.ent ead determined that-,It was Fesonable. (ADAMS

.. sion ML13091A296). Confimi thatthe 'pgrdes to

-."Columbia's communications s fii are btIe ed"

Analyses and procedure development. ddressing personnel.

3.2.4.6A habitability issuesare still Inprogress. Confirmr tat the act" 2_,k.

conform to the guldac InNEI 12-08,$ 'eci"'3.2.2, "u04t!it .

(11), or that an acceptable altemativeis dev~(f~ped. ' "

The licensee is performing Sizing calculations to show that the FLEX DGs can supply the Iodds asddmihn Phase"s2 and13o* ,.

Columbia's mitigating strategiesd.Thsresufts will be. submItted 3.2A..A in the February 2014 Integrated-.Pan u0*ate,.Confirm that:the , 214A results are acceptable. [Energy Northwest note: The date for the associated OIP update has been changed as stated inthe OI-FLEX-54 status above.) , __.,___-__..

-'"The ilensee Intinds to follow the genesl-ies4sution-related to 3.2.4.10.A extended battery duty cycles. Corfimiadhaeinfe:tolheNRCLt - ,.;22-A, staff's positloh related to this conoe,-. .

3,2.4.10,B Confirm that theability'o opqrators to omplete specified '

.battery ..o shed.ac*,io sWthin.,he times. ,st*te ( valdated.. ,.

-Confirm th"llcens Wdilevelopmenbt9the EtAPoad shtldliig-  :, ,

ýprocedureirnd that the procedure includes directions for 3.2.4.10.C operators to depressurize the main generator manually before 24-A

-shedding the air-dide sealoil.,-backup pump it the generatorisb..- r pressurized with hydrogeh,i, ... , . ,. ..

ENERGY NORTHWEST'S FOURTH 601K-AIOTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC OI!QER EA-12-0" WMTIGATION STRATWIES FOR BEYONI DESIGN BASIS EXTEFI EV*E*TS Enclosure I Page 23 of 24 8.0 References

1. NRC Order EA-12-049, dated March 12, 2012, "Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond Design Basis External Events"

2. Letter G02-13-034 dated February 28, 2013, from A. L. Javornk (Energy Northwest) to NRC, "Energy Northwest's Response to NRC Order EA-1 2-049 - Overall Integrated Plan for Mitigating Strategies"

3. Letter G02-13-123 dated August 28, 2013, from D.A. Swank (Energy Northwest) to NRC, "Energy Northwest's First Six-Month Status Update Report for the Implementation of NRC Order EA-12-049 Mitigation Strategies for Beyond Design Basis External Events"

4. NRC Order EA-12-050 dated March 12, 2012, "Order Modifying Licenses with Regard to Reliable Hardened Containment Vents"

5. NRC Order EA-13-109 dated June 6,2013, "Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions"

6. NRC letter dated January 29, 2014, from J. S. Bowen (NRC) to M. E. Reddemann (Energy Northwest), "Columbia Generating Station - Interim Staff Evaluation Relating to Overall Integrated Plan in Response to Order EA-12-049 (Mitigation Strategies)

(TAC No. MF0796)"

7. Letter G02-14-26 dated February 21, 2014, from D. A. Swank (Energy Northwest) to NRC, "Request for Relaxation from NRC Order EA- 12-049, 'Order Modifying Licenses With Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events"'

8. Letter dated April 15, 2014, from E. J. Leeds (NRC) to M. E. Reddemann (Energy Northwest), "Columbia Generating Station - Relaxation of Certain Schedule Requirements for Order EA-1 2-049 'Issuance of Order to Modify Licenses with Regard to Requirements for Mitigation Strategies for Beyond Design Basis External Events'"

9. Letter G02-14-031, dated February 27, 2014, from D.A. Swank (Energy Northwest) to NRC, "Energy Northwest's Second Six-Month Status Update Report for the Implementation of NRC Order EA-1 2-049 Mitigation Strategies for Beyond Design Basis External Events"

10. Letter G02-14-131 dated August 28, 2014, from D. A. Swank (Energy Northwest) to the NRC, "Energy Northwest's Third Six-Month Status Update Report for the

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ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUS UPDATE REPORT FORTHE IMPLEMENTATION OF NRC ORDER EA-12-049 MmGATION STRATEGIES FOR BEYONDDESIGN BASIS EXTERNAL EVENTS Page 24 of 24 Implementation of NRC Order EA-12-049 Mitigation Strategies for Beyond Design Basis External Events" I C'

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ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDEA,,EA,1*-99 MITIGATION STRATEGIES FOR 01YON.D DESIGN BASIS EXTERNAL EVENT, Page.1 of,6

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ENCLOSURE 1, COLUMBIA GENERATING STATIOK-OOCKET NO. 50-397 FOURTHMSIX-MONTH STATUS UPDATE REPOR" ,  ;'

FOR THE*IMPLEMEMING'ACTIONS IDENTIFIED INSUCT!ON 9.0 OF THE COMMUNICATION ASSESSMENT CONTAINED INENERGY NORTHWEST'S DOO-EKtD COIRESPONDENCE G02-12-166 (`ML12319A079)

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ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EA-12-049 MITIGATION STRATEGIES FOR BEYOND. DESIGN BASIS EXTERNAL EVENTS Page 2 of 6 INTRODUCTION By Reference 1, the Nuclear Aegulatory Commission (NRC) requested information, based upon Near-Term Task Force (NTTF) Recommendation 9.3. The NRC requested that licensees assess their current communications systems and equipment used during an emergency event. Referenq 2,9,d Refqferece .3provided Energy'Northwest's commurtications assessment f0orthe Columbia Generating Station, and a response to an NRC request for additional'information, respectively. The NRC staff documented its review of the communipation assesss~ent iit Reference 4: The staffs review determined that the assessment was reasonable, and 'that the interikm measures and proposed enhancements id"nied Inthe assessn.. Wo..*d help to ensure that communications are maintained. .. .

STATUS UPDATE  ;". .

in Referenc4 ý, Ener gy Nothwest comm~ed tdihoiude the status of the Implementing Actions identifed in Section 9.0,of thle Communication-Assessment-as part of the six-month st*atu*s reports prepared 'isdant to Sectiotd WIV.C.2 of NRC Order-EA-12-049.

This enlosureS piovides Ehergy Northwest's fourth six-month status report. The table below provides the status of the implementing activities considered necessary to provide com munication capabilitis durng a .eyo!id Design Basis Event that are consistent witli the assumptionj}2spe9iflod InNucleair Energy Institute (NEI) 12-01.

CHANGESTO A66ESSMENT in Referenice 5, .ne!- Northwest provided the following updates to the Communications4esment:.t'

• The Refer6nce 2 :CommunicationsAgessmnent stated that the in-plant radios would be available as a backup communication system. It has been determined that the mounting of some radio system components does rinotitidt the seismic requirements ne6essary to assure system availability. Nevdrthelebssthe portable radio-to-radio capability, portable satellite phones, and sour*ndpooWeed phones Will beavailable as stated In the Communications MsessmOrt. ,,Tee devices ensure the cbrniimunlcatlon capability in Section 2.6 0f Refer"niwe . ,-wl be met.

Irnaddition, portable back-up power will be~available for most.evr~t,.

- Additionally; sufficient quantities of portable radios, portable satellite phones, sound powered phones, and bsOundipowered'phone kits are'vaildbleto minimize'!

the reliance on mulli.use equipment as required by NE!12-01.

• The Reference 2,Communications'Assegsment also stated that power to the in-plant radio system and battery chargers would be provided by portable

ENERGY NORTHWEST'S FOURTH SIX-MONTH4 STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EA-12-049 MITIGATION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVENTS Page 3 of 6

-generators. The currentplan is t* powerthe-irn-ptant radio system from FLEX generator DG4 or DG5, and to power the radio battery chargers from the generators that will pwe.t:hous& loads.ln the FLEX buildings in the event of a lQss of normal power.

No additionail changes to the Co0mmunicati*on Asaessment are being maede. Changes to the Commuinication Implementing Activities Open Item Ust made since the last update are indlMaed by a Revision Bar.

L......

CommunlcatgbIp mplhmenting Aptiv#i. - Open Item L22M. lo t.o. M28.22,;. :,.,.

a. Develop and; procuresound powered phone kits Completed

b. Stage sound powered phone kits-in.:FLEX Completed buildings

c. Expand line lossetest procedure with additio3nal Completd k/locations ,

d. Update inventory procedure to include sound i comletd powered phone kits ý.,p

e. Identify any preventiveimaintenance/testing Con~eied required for sound. powered phone kits7 .....-

f. Review existing functional test procedut-e for-sound ,powered system headsets for any,- .. ompletd:

enhancements

g. Revise communication procdure(s) to .*iude the use of the sound pwered phone kits.Cm

.aDesign, aICIIMO procure,.-and$eli l~Install,.fixed*I*ae

': ... sttion.:' .. i.. ... .

units, antennasignd,,uninterruptabte*Lpower.'.-

supplies for the:w ** .-. .; *:** ..

1) TSC/OSC .*...*.. .i. Completed

2) Control Room Cotntieted 3 EOF .. '.*.. ..,* *,,..  ;, Completed

5) Alternate EOF,... . .- Completed

b. Stage spare satellite phones',,batteries, and-;-,

chargrs in--FLEX.bulldings . , Completed

c. Update Work instructions for satellite phone '. 1.

inventory with final location of portabte phones, Completed batteries, and chargers- ... ____-_;___.-__.

d. Develop preventive maintenance and testing procedures for the fixed base station units and Completed.

uninterruptable power supplies

ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EA-12.049 MITIGATION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVENTS Page 4 of 6 Communicatton ImplenwnMng Asovfta - Open ftoi Ust __ __ _

e. Develop procedure on portable .atellite phone Completed b atte ry rota tion ". . . Com pleted___.-.

f. Inblude information on fixed base.station locations C pl d Completed and Usage In procedures, Sa. Obtertire!lo system ..... coverage

. -.. , .... .,Completed requirements for an extended loss of AC Powerage e4uiern*n..

b. Develop design to support coverage requirments and meet reluirements of Nltfi2-O1 (This"Olhis been deleted'because the radki6 ,ill7riot be -tbeleted

- assumed to be available as a backup-bo* imunicatioisy*Temo) '

c. Incbrporate deal§K Into overallrdiOb'6i:*de,'

project (This 01 has been deleted because the "4dlIswill 'not be &sSunMed to be avatuate as a Deleted backup communication sythj.)

d. Complete Phase I of radio upgrade proiect Completed

e. De'elop estimates of required radio talk time Completed

f. Deerrine battery life based on talk time' i-/'

estlmates and procure'adýonal bitterles as Cdoletia re g*ire d . ....... ...... . .. ...

,g' ..,Procure potable eneI* or*APFLEX) to rdvi6,ýý .

6"g;wrto radio system . COmpleted

h. Stage portAble 9eneators$in'FLERTF6l1ldirgs . . mplete I. Iden.tify final storage locations Qf radios and ensure locations ire diverse arid rdid*ably NJot Started protected. Stage'ladlos in final'lO6atioflo" jStage batteries

• and

.:,, battery ..chargers'In FLEX .omple.ed

,*,,,*.Completed buidings . . . ._______-_...

k. Update work intrUticbns for radio ihn1'Vtfy with ,

final location of radios,battees, and ,hargers I. Develop procedure on radio battery rotation qompited

m. Develop preventive maintenance and testing proceduresioeviiw radio sitim equipment requiied for an extended loss 'of AC l'0owr"e t (ThiWOI has been-deleted becauiJ thti"694ju't Del.eted. *z-not be assumed to be available as a backup ., r-communication system.) .....

ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUS ,UPDATE REPORT FOR THE .MPLEMENTATION OF NRC ORDER EA- 2-049 MITIGATION STRATEQIES FOR BEYOND DESIGN SASIS EXTERNAL EVENT1S Page 5 of.6 C0!fkwilon Implementing Activitles - Open Item List - .....

n. .Develop procedure, on-radio systemuselfor. radios required for an extended loss of AC power event (This 01 has been deleted because the radios will Deleted

,v.fo; r not be assumed to be available as a backup

, communication system.) ,. . -'C.

a.. Identify those.onsite office build irgthardo~not "l.

. have a bitter*-backed PA systir . - " Compet

,Lb. - dqntify "ersonnel to perform alternate notifiction

-" onsite Ofice buildings if PA system is not Completed

.,,,,available .. . ._.. . .. _._.. ..

c3.9Develop proceiure for perfohiping alterte no0.tificatiions t1.eh"rsUfro f cn .l*,nitifiedwith-n Completed 1 0 m inutes  ;.1~ .. - . 4,', .....

. .Develop policy requiring building oc.upants to ,* A w auto'matically qyacuste 6uildjngi agocJ 6sseni'0e in *Completed designate; reras foPr.*niixtended I"' pf'A 0o power eventt. .. .. _.___,,__

e. Evaluate u6pgrading power supplies tolPA system in onsite office buildings .tatare not bat ... , , ,.;C pleted backed... , *

a. *rovideeach4 ORO identifiedln Sectio64.0,with instructions for proper storage and rotatloii of Completed satellite 2"*n, P tteries . , .

b. Verify the.capabiljW. of the satellitq.phonesAtAtte ORO facilities to be poyvered for 24' h.rs., -P.. C-npj

-consistent with the assumPbtons in NEI 12-01 ..... .. .. ...

01-COMM-0 S-FLEX Buildins:

a,., Design,. procure and install FLEX. buildlngt.to . ' et&'to mitig.ion include portable generatoribacked Powerp0y .'* stratefi,.opemitgi to meMquirements f 12-06EX0 -s.trategie openitem OI-COUM Potgble 2KnerorK.

a. Develop portable generator fuelin~g plan to ensure ability to provide power for a minimum of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> Refer to mitigation strategies open item 01-FLEX-30

ENERGY NORTHWEST'S FOURTH SIX-MONTH STATUS UPDATE REPORT FOR THE IMPLEMENTATION OF NRC ORDER EA-12-049 MITIGATION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVENTS Page 6 of 6 01--COMM,011-- Imialn

a. Evaluate training needs specific to the use of sound powered phones, satellite phones, and Completed radios during an extended loss of AC power event References

1. Letter dated March 12, 2012, from EJ Leeds (NRC) to All Power Reactor Licensees and Holders of Construction Permits in Active or Deferred Status, 'Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendations 2.1, 2.3 and 9.3 of the Near Term Task Force Review of Insights from the Fukushima Dai-ichi Accidenit

2. Letter G02-12-156, dated October 30, 2012, from D. A.Swank (Energy Northwest) to the NRC, "Energy Northwest's Response to the March 12, 2012 Information Request - Communications Assessment"

3. Letter G02-13-026, dated February 21,2013, from D. A.Swank (Energy Northwest) to the NRC, "Energy Northwest's Response to Follow-Up Letter on Technical Issues for Resolution Regarding Licensee Communication Submittals Associated with Near-Term Task Force Recommendation 9.3"

4. Letter dated April 11, 2013, from C. F. Lyon (NRC) to M. E. Reddemann (Energy Northwest), "Columbia Generating Station - Safety Assessment InResponse to Information Request Pursuant to 10 CFR 50.54(f) Recommendation 9.3 Communications Assessment (TAC No. MFOO02)'

5. Letter G02-14-031, dated February 27, 2014, from D. A. Swank (Energy Northwest) to NRC, "Energy Northwest Second Six-Month Status Update Report for the Implementation of NRC Order EA-12-049 Mitigation Strategies for Beyond Design Basis External Events"

6. Letter G02-14-131 dated August 28, 2014, from D. A. Swank (Energy Northwest) to the NRC, "Energy Northwest's Third Six-Month Status Update Report for the Implementation of NRC Order EA-12-049 Mitigation Strategies for Beyond Design Basis External Events"