ML17292A873

Summary of 970429 Meeting W/Util in Rockville,Md to Discuss Licensee Status & Schedule for Resolution of Thermo-Lag at Plant.List of Attendees & Handouts Encl

ML17292A873
Person / Time
Site:	Columbia
Issue date:	05/23/1997
From:	Colburn T NRC (Affiliation Not Assigned)
To:	NRC (Affiliation Not Assigned)
References
NUDOCS 9705280435
Download: ML17292A873 (42)

Text

ghee REG0

~o

)g C

0 9

qO

++**+

UNITED STATES CLEAR REGULATORY COMIVIIS~ION WASHINGTON, D.C. 2055&4001 May 23, 1997 LICENSEE:

Washington Public Power Supply System FACILITY:

Washington Nuclear Project No.

2 (WNP-2)

SUBJECT:

MEETING

SUMMARY

THERMO-LAG RESOLUTION STATUS On April 29,

1997, personnel from the Washington Public Power Supply System (the licensee) met with members of the NRC staff in Rockville, Maryland, to discuss the licensee's status and schedule for resolution of Thermo-Lag at WNP-2.

A list of attendees is provided in Attachment 1.

The meeting was requested by the staff following a March 1997 quarterly corrective action status call with the licensee.

The licensee indicated during the meeting that as described in an earlier letter (May 3, 1996) to the staff, the licensee's schedule for resolution of the Thermo-Lag issue had slipped to late 1997.

The licensee had indicated that a complete change in methodology for resolution had occurred in early 1995 from qualification of Thermo-Lag by the licensee, to rerouting electrical cabling and revision of the fire hazards analysis to revise fire area boundaries and minimize equipment credited for safe shutdown.

This change in strategy was identified in the licensee's letter of April 27, 1995, which committed to completion of resolution by the Spring of 1997.

As stated in the licensee's letter of May 3, 1996, significant budget constraints delayed resolution of the Thermo-Lag issue.

The licensee also indicated that other fire protection projects were competing for technical resources such as resolution of penetration seal issues.

The licensee stated that all.essential seal work should be complete by September 1997.

Since WNP-2 conducts annual refueling outages and schedules divisional outages during these refueling outages, Division 2 work (the safe shutdown division) to resolve this issue was delayed from the Spring of 1997 until the Spring 1999.

The licensee indicated that it spent two years working on its conceptual design.

The licensee's plan calls for installation of approximately 2300 linear feet of Whittaker fire rated cable, 600 linear feet of alternate approved fire barrier material, and 250 linear feet of 3M Interam rated barrier in addition to the revised fire hazards analysis and redesignated fire areas and involves at least 11 individual design change packages.

During this time the existing Thermo-Lag will remain in place unless removed as part of a modification, and fire watches will continue to be stationed until modifications are completed.

The licensee stated that its resolution does not involve reliance on Appendix R Thermo-Lag barriers, reliance on 20-foot noncombustible

zones, Appendix R deviation requests, or additional operator actions.

A copy of the licensee's slides used in the presentation including a

historical timeline of its Thermo-Lag resolution is provided in Attachment 2.

9705280435 970523 PDR ADQCK 050003'P7 P

PDR PP3I I

@N~ g~m NFI'

g

~

Hay 23, 1997 The licensee committed to keeping the staff informed of its schedule for testing the Whittaker fire cables in order for the staff to observe these tests.

The licensee also indicated that Thermo-Lag resolution is of highest priority (using its numerical prioritization determination) and committed to provide a time line or schedule for completion of the design modification work packages including a percentage completion.

No proprietary information was discussed or provided to the staff at the meeting.

Original Signed By Docket No. 50-397 Attachments:

l.

Attendance List 2.

Slides cc w/atts:

See next page, Timothy G. Colburn, Senior Project Manager Project Directorate IV-2 Division of Reactor Projects III/IV Office of Nuclear Reactor Regulation DISTRIBUTION: (w/encls.

1 and 2)

Docket File PUBLIC PDIV-2 Reading TColburn

PGwynn, RIV

HWong, RIV

KPerkins, RIV/WCFO DISTRIBUTION: (w/encl.

1)

S. Collins (SJC1)

F. Hiraglia (FJM)

R.

Zimmerman (RPZ)

J.

Roe (JWR)

E. Adensam (EGA1)

W. Bateman (WHB)

L. B. Harsh (LBH)

K. S.

West (KSW)

L. Tran (LNT)

M. Salley (HXS3)

D. Oudinot (DHO)

M. Biamonte (MAB)

E. Peyton (ESP)

ACRS OGC OFC PDIV-2 PM PDIV-2 LA eeyNP 5

96 NAME TColburn DATE 5

97 OFFICIAL RECORD COPY DOCUMENT NAME:

WNPTLAG.MTS NRR:SPLB 79+

THarsh 5 zP/97

I ~

il V

.3

~ May 23, 1997 cc w/atts:

Hr. Greg 0. Smith (Hail Drop 927M)

WNP-2 Plant General Manager Washington Public Power Supply System P. 0.

Box 968

Richland, Washington 99352-0968 Mr. Albert E. Houncer (Hail Drop 1396)

Chief Counsel

.Washington Public Power Supply System P.O.

Box 968

Richland, Washington 99352-0968 Hr. Frederick S. Adair, Chairman Energy Facility Site Evaluation Council P. 0.

Box 43172 Olympia, Washington 98504-3172 Hr. David A. Swank (Hail Drop PE20)

Manager, Regulatory Affairs Washington Public Power Supply System P.O.

Box 968

Richland, Washington 99352-0968 Hr. Paul Inserra (Hail Drop PE20)

Manager, Licensing Washington Public Power Supply System P.O.

Box 968

Richland, Washington 99352 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission Harris Tower 8 Pavilion 611 Ryan Plaza Drive, Suite 400 Arlington, Texas 76011-8064 Chairman Benton County Board of Commissioners P.O.

Box 69

Prosser, Washington 99350-0190 Hr. Rodney L. Webring (Hail Drop PE08)

Vice President,'perations Support/PIO Washington Public Power Supply-System P. 0.

Box 968

Richland, Washington 99352 Hr. J.

V. Parrish Chief Executive Officer Washington Public Power Supply System P.O.

Box 968 (Hail Drop 1023)

Richland, Washington 99352-0968 Mr. Scott Boynton, Senior Resident Inspector U.S. Nuclear Regulatory'ommission P.O.

Box 69

Richland, Washington 99352-0968 Hr. Perry D. Robinson, Esq.

Winston

& Strawn 1400 L Street, N.W.

Washington, DC 20005-3502

0

~ 5

~T.

t ~

Attachment I MEETING WITH WASHINGTON PUBLIC POWER SUPPLY SYSTEM THERMO-LAG RESOLUTION AND STATUS ATTENDANCE LIST A~il 29 I

7 NRC L. B. Marsh T. Colburn K. S.

West L. Tran M. Salley D. Oudinot WPPSS D.

Swank J.

Swailes T.

Meade G. Rowell W. Harper F.

Emerson

sf.

I t

~

~ $i Attachment 2

MEETING WITH WASHINGTON PUBLIC POWER SUPPLY SYSTEM THERMO-LAGRESOLUTION AND STATUS APRIL 29, 1997 HANDOUTMATERIALUSED AT THE MEETING

cF.

~

I

~ ~

~-

c 4

'NRC Presentation M'

. WNP,;.Z,Thermo-Lag Resolution

~

.vl'~~4K>~'-" "'"i:<"~~-""." -"

'P'g~p4tc

~

ic C,i I

c

~"...~..

cc

. "~

~'

~

,,cr 4 c v 'i,-c I

1' 7

c I

c r

R l.-

e&la

~%

c r

3J

~

c pf

..l J.

c 0W SUPPLY SYSTEM

jective

~ To present WNP-2 Thermo-Lag resolution:

accomplishments methodology modifications completion schedule WNP-2

oat/f1gS

~ Safe-shutdown coatings:

instrument tubing supports (51) concrete block wall surface in TG building Cable Spreading Room 20'oncombustible zone

~ A11 on hourly fire tour

~ ~

urrent re ite Barriers

~ Safe Shutdown barriers:

-4200 lin-ftofThermo-Lag 330-1

>> cable tray/conduit

>>junction boxes

-360 lin-ftofconduit with 3M Interam barrier

~ Allon hourly fire tour Fire tour procedure enhanced WNP-2

Other Major Fire Protection Project Competing or Resources

~ Resolution of Thermo-Lag project has been concurrent with major penetration seal upgrade program

~ Since 1994 have:

Inspected -4700 penetration seals Reworked -1050 penetration seals Developed new: procedures, typical seal details, barrier functions list, Fire Protection Engineering Evaluations, etc..

Interim T ergo-I.ag Barrier ontro

~ Breaches in existing Thermo-Lag raceway barriers have been repaired and provide a substantial fire rating

~ Configuration controls in place to ensure any future breached Thermo-Lag is repaired

~ Resolution modifications willbe coordinated to maintain existing Thermo-Lag barriers in place until completion ofthe resolution effort WNP-2

0 I

T errnO-I.ag ReSO utiOn CCOPlP lS V/CElfS t'also see Timeline)

~ Ampacity derating calculation updated

~ Plant walkdown ofall Thermo-Lag and comparison to NEI Application Guide (-4800 man-hours)

~ Seismic analysis (I and II/I)(-1000 man-hours)

~ Cable tray/conduit support structural analysis (-8800 man-hours)

~ Conceptual design for alternate resolution methodology (-5000 man-hours)

~ Engineering evaluation of alternative fire barriers, fire rated cable, etc.. (-1000 man-hours)

Peso ution Met o o ogy

~ Engineered solution vs barrier solution

~ Resolution methods:

Safe shutdown analysis revision to clearly define safe shutdown components/circuits Circuit reroutes

>> Fire rated cable Alternate raceway barriers New fire area boundaries

on uit Raceway Insfa ation

~ Scope:

-150 cables with >3500 terminations

-38,000 lin-ftcable

-3000 lin-ftconduit

-2300 lin-ftWhittaker fire rated cable

-350 lin-ftcable tray 20 junction boxes 53 penetration seals

~ See Raceway Diagram WNP-.2

on uit Raceway Insta ation (continued)

~ Equipment impact:

shutdown cooling isolation valve (RHR-V-8/9) power/control various instrumentation circuits various RHR and SW pump/valve power/control motor control center rearrangement HVAC fan power DG2 control circuits

~ Division IIwillbe out of service during work

t

ewFire reaBoun ary Fa s

~ Two new fire areas with Division I safe shutdown equipment protected

~ Scope:

2 walls (one at each end ofcorridor) penetration seals 2 fli'e doors 1 fire damper detection k, sprinkler modifications WNP-2

~ )

S

Raceway Barrier ummary

~ Resulting Safe Shutdown Raceway Barriers:

-2300 lin-ftWhittaker fire rated cable

-600 lin-ftalternate material rated barriers

-250 lin-ft3M Interam rated barrier

>> modified sections of 3M willbe upgraded to meet GL 86-10 Supplement 1 design WNP-2

Reso ution ummary

~ Results:

no post-fire safe shutdown regulatory deviations no credited safe shutdown Thermo-Lag barriers no new credited operator actions no 20'oncombustible zones WNP-2

~

~

~z'~

.s-

'I ~

T ermo-Lag Reso ution tatus Future i estones

~ Safe shutdown reanalysis in progress

~ Final Design Packages 13'omplete

~ Field work to begin 7/97

~ Non-outage modifications complete by 4/99

~ Outage modifications complete by 7/99

~ SSD analysis revision completed prior to R-14 restart

~ Final submittal by 12/99 WNP-2

o i ication Imp ementation a enges

~ Safe shutdown analysis revision

~ Modifications to critical plant systems potential challenges necessitate deliberate preparation and error free implementation

~ Significant post modification testing required

~ Outage coordination

utage c e u e C

~ WNP-2 has annual refuel outages

~ Alternating divisional outage schedule to enhance outage safety

~ Current outage R-12 (4/97) is Division II

~ Safe shutdown components requiring rerouting are primarilyDivisionII 4

~ Next DivisionIIoutage is R-14 (4/99)

~ Large amount ofoutage planning needed in R-14 WNP-2

Mo i >cation Imp ementation

~ Sequencedto:

maximize implementation during non-outage periods minimize safe shutdown out-of-service times

~ Non-Outage modification scope includes installation of:

conduit/tray/cable and junction boxes penetration seals alternate wrap material walls WNP-2

0

~

~

.a 1

'I

o i tcation Imp ementation (continued)

~ Outage modification scope:

work in rooms which are high radiation during plant operation final circuit terminations (in 50 enclosures, including main control room) post modification testing WNP-2

0 ~

C

OE1C QSEOP2

~ Existing safe shutdown Thermo-Lag:

provides a substantial fire rating Thermo-Lag willremain in place until final resolution ofproject on hourly fire tour

~ WNP-2 resolution plan willresult in no credited safe shutdown Thermo-Lag barriers

~ No 20'oncombustible zones

~ No safe shutdown regulatory deviations WNP-2

OPTIC QSlOEl (continued)

~ No new credited operator actions

~ Continuous progress toward resolution is evident

~ Final installations in 4/99 outage needed to meet divisional outage schedule

~ Non-outage modifications completed by 4/99

~ Outage modifications completed by 7/99

~ Final submittal by 12/99 WNP-2

1992 WNP-8 THERMO-LAGRESOLUTION TIMELINE 1997

,v 1999 JFMAMJJAS0NDJFMAMJJAS0NDJFMAMJJAS0NDJFMAMJJAS0NDJFMAMJJAS0NDJFMAMJJAS0NDJFMAMJJASONDJFMAMJJ I Itkb FER 292421dectrm sons tnnnotay drstyre hoperebto. inirdes ~ tgtcsden forccnthurd opersdon.

~ 182:

Nkc Methgtdf ptrplaera I noraes bvbrrtrflo declare al Appendtc 8 bbernofay hoperabte.

I 382:

The renshder ef WNP4 Atpondh R eboreotay declared hoper ears.

~ 128k hktetptnvterotuutfktttafcfsetorthyh <<rtpnetvkbnwfrsvt<<ontogvbedf orytafsersrhs I I8k WIW4retaends lo Cenertc Laker 9240 )GC2930IIL Revhedrevpenea sera 42383 IG024SNIL

~ I8R WIW4pnnrtdes ~ tevfsedresporne lo Cenertc Laker 9241 IG024bt42 I Ttkk wtw4 responds lo IOC inpecdon Ropon pity Coeueks lo s nabdeen d sk Tonaoksy htsasdanlor hrpact on srapeckf <<cathy.

5 98k IANIAACOro totthy beyhs.

~ 18k bernocaynskdenacnptrtsdhodbessanpockf dlrsthy.

I 28k WNP4 terpondt loyrsl frAIsft)laker )000dctdpj Tacks cnasctrd Nc evahete vrnnotag reduc5on opdonl. aakdonn eo wkp4 beenofag snf drcunerd <<styrvk prepare risklioodeonggoserepkew hr Rosette ttukdhy. updehiovlse cable pttccnduk wpporl vssrdcns, end australe drstgrn per NoThonraofay ppykcadan Gvbfb

~ 28lr Eny>>erhy erkenks detakedrepert an Ore foasWtf ef Appencys R ennatfsts.

~ 28I:

&ybeorhy ccncirdes ont breacned Tbonoisy ftrora erode h prrvteus tno auteges) should br repeiedlo prartfe a btgher Iwelof tbe sstetT.

Terat mrke olnnreotsg Stsledcn pecertas beyhe.

5 I08cr Vaska eubnks evsindon el WNP4 dretfne Per NB TenaoLsy Ppfcadoa Gutda, Nraeereue WNP4 deelyee net branded bf IAIIIAICRa lssghy.

No dostp>> dteenhed loprost<< fuk I or Ste If'ee rathtp 0 Ibyl:

Enyheerhy pwgrans osstpvrd eesttplt end~ sf Tbonoisy pro)ecL Tbh srerts On beghnhy ofen estsnstvo ekorl to ovsinte on wrdr4 clttenl hr Tbernofag ftetudcla I 118k WNP4respen<< tokrttonup I0$aft) rerpwrt tenor f002 II49t).

I IINR Nenmhhn td ebssaocay Stakrdcn procedure epprorat

~ ILSR Adaycrsodrenstlfsts laaa Is krrarodlo evaknte cfatene hr ctahatfernocay resolkkn.

5 281:

Agbreacbod wtdr4 Appencgs R Tonaokay repaired. Fire petecocnum ods~ lo perforce eehhcdre esssnhedcn ef wkp4 preps. uuaercen deslyn evtrdcna cbrervaL I 38R wtdr4 provldrs s krbveup response lo Grnertc lsaor 124I nbtcb hhras onltkc onl wtw4 bse dceechued ekcrls lo ttuekrf ate

~ oLsy 330 Ijc02-9$ ISFA 5 38R ftrrsdren ccnwkam ydci Ftorsvsnh) wbnks enhdepedel 3rd penf report on proposed wtkr4Thennocay motudcn strttsgf.

I WI5:

That Ttaaroksy reootudcn phn ppprovecL 5 AOR WNp.2 respcnds looN seccad fooovrup Idge(t) recprest taker jG02490ITL I Lyte saeed on on ccnnaeatc vtrbtkftd wtw4,ptgtceea budyN~ inpooed.

PRG ettondl pro)rd eeeolfanbf Iao Terre jtbftL I 181:

IOC ac oeeedges end atprovee Tbonoisy resolkin prana end ectvnkdo.

g SSR Sryptf Sfvttrn selects EGE Engheohy Cnnkesras lo parterre setlrak anslfsls ef erraofag jsbedeed Appendts R and trcktcsf aeperstheL

~ Itrtck Evatusdcnbeghs et lbe fire no<<gay proposed lrfSAICIEPIO lar 104 conldor.

9 180:

pRc eccssmrsensfsls ef TG Icrvrtdor. Request Fce ptopoerf yttFI)utaeakttdlo nnjrulioprctecdancanwkhy fhsL Fraure Aeroura ol Racensf Prraect ten recur TlplInearleel d 300 kntr ferret nrka Areas Itrrotay330 I Icdftretdforeblerlal rated cable Strap TC8 Inesr leel cf ailnear leet cfnrka Arses itnnrocag 3301.

250 Instr tref cf 3lL 3INbnsr Iett ct Nl I203 frttd Trdrraerbe tered cotta fktsk

1. Tbo ttrne arsy lsngtd dr ntfitkah receesf tttleets cr )uncscnbar anpa

2. Aaa tftnd itrra rscevrrf erap tnrrkrs Tgfk s Taaeeocag nsf wean created ss a frpprcctfrtf OIN tunnasrl kbe sleet ncprrtL

~ 38c:

eesokdrn phn cbonyes intude wo ef wbktstsr firerated csbh.

I Sgh Letter Gkbfff49T)lonaalf nrtkns NRCd pro)ect estsnshnlo sprhy 1990. Nohearst rpprevsf bker recetved lo data.

~ 28R OIEI~ Servtes eubnks Ihel repent on sdokuacf ob I)Wbktehr fke rsted cstak2) Cursshel fie banters end I)ytpnae Sls yre banters. Supptf Sfstveeaa beghs Item lo parterre a Wbiraht cath we tetL 0 28R lndopede ceeukenl rehhedlo ssatrt h Acpsrvka R cskubthn evtetcn, I 284:

Evskredsn ef Ttbf prcpoeals born vendcnhrycsmna wccessid bha. Rfp csncetnL

~ 984:

The Srtrptf Sftttrnbegha a Rfp for attctdr8 bih on en eksrnleo rearnsf fbe eesp.

~ WIN eeceudtn plan cbenyee hchde wrro ectrnrtve uee d wbttatsr f9o rated cobra.

~ 281:

Arkhtcnet~ thAhranrrd acdrkbe epprsvak I)ectrthy 3N iasrbt nkbe atkted ha nw be Icrgladed atnre rnecNtnk 2)h lhe cebh ctnsk en ereptf cable iefvrR be lanated and lao 5 vrt<< tsfs hshknL

~ 092.

Rfp subrahedhrecensy nrap wndors tsrasdva) g 28fr Find wsddlcationefvldutldlebegh Plant readficrdcns scheduled lolnenpplrtaL 589 I

1 l

J 1

I t