ML19320D164

Submits Status of Extensive Survey Program Initiated in Response to IE Bulletin 80-11.Accounts for Half of Masonry Walls Requiring Insp.Remaining Items Will Be Covered in Final Rept to Be Submitted After Completion of Surveys

ML19320D164
Person / Time
Site:	Calvert Cliffs
Issue date:	07/03/1980
From:	Lundvall A BALTIMORE GAS & ELECTRIC CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
IEB-80-11, NUDOCS 8007210044
Download: ML19320D164 (32)

Text

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. BALTIMORE GAS AND ELECTRIC COMPANY P. O. BOX 1475 BALTIMORE, MARYLAN D 21203 July 3, 1980 ARTHun E. LUNDVALL,JR.

vics Pnesioce.t Su ppty Mr. Boyce H. Grier, Director Region I, Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406

Subject:

Calvert Cliffs Nuclear Power Plant Units Nos. 1 and 2 IE Bulletin No. 80-11

Dear Mr. Grier:

Following the issuance of IE Bulletin No. 80-11, an cttensive survey program tas initiated at the Calvert Cliffs Nuclear Power Plant. This repre-sented an intensive effort with up to eighteen people at the plant working six ten-hour days per week in an attempt to meet your schedule.

The survey is nearly complete with the exception of the walls which are inaccessible during normal operation. This report gives the status of the program to date.

Attachment A shows all of the masonry walls which have been identified in the Auxiliary Building. To date, no other masonry walls have been found in the remaining Category I structures.

Surveys of the containment structures and other outage-related areas will be conducted during the next refueling outages.

These outages are scheduled for October and January.

Attachment B is the response to Items 1, 2a, and 3 of the bulletin.

This accounts for over half of the masonry walls requiring inspection. An up-dated report will be sent as soon as possible after completion of the surveys.

In the process of the survey, two stacked shielding walls (constructed without mortar) were identified as having a possible impact on safety related systems. These are shown as wall L on page A.1 and wall N on page A.2.

These walls have been removed.

l We have scheduled a meeting of owners and engineering fims on August 4

{

and 5, 1980 in Baltimore.

Following this meeting, additional aformation will be sent to you on the criteria which will be used in the mascary wall analyses.

Very truly yours, DTW:jch A. E. WhaH. h.

cc:

J. A. Biddison, Esquire G. F. Trowbridge, Esquire Messrs. E. L. Conner, Jr. - NRC J. W. Brothers - Bechtel THIS DOCUMENT CONTAINS Office of Inspection & Enforcement POOR QUAUTY PAGES.*

U.S. Nuclear Regulatory Commission Division of Reactor Construction Inspection Washington, D.C.

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ATTACRMENT B PAGE B.1

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Identify all masonry walls in your facility which are in proximity to or have attachments from safety-related piping or equipment such that vall failure could affect a safety-related system. Describe the systems and equipment, both safety and non-safety-related, associated with these masonry walls.

Include in your review, masonry walls that are intiended to resist impact.or pressurization loads, such as missiles, pipe whip, pipe break, jet impingement, or tornado, and fire or water barriers, or shield walls. Equipment to be considered as attachments or in proximity to the walls shall include, hut is not limited to, pumps, valves, motors, heat exchangers, cable trays, cable / conduit, HVAC ductwork, and electrical cabinets, instrumentation and controls. Plant surveys, if necessary, for areas inaccessible during normal plant operation shall be performed at the earliest opportunity.

Response

A survey of all masonry walls in the Calvert Cliffs Nuclear Power Plant, Units 1 and 2, was begun on May 19, 19 80. A work plan for the survey was issued in preliminary form, and later finalized. All masonry walls shown in existing drawings and documentation were identified as requiring inspection, and a systematic search of all safety related areas of the plant was conducted to locate and identify all masonry valls not shown in existing drawings and documentation. A survey i

package containing the documentation of the inspection was required for each wall included in the program.

The survey staff included engineering and drafting personnel.

It grew in size as work progressed, reaching a peak size of 18 individuals.

As of June 30, the existence of 213 masonry walls had been confirmed, including walls not shown in existing drawings which were discovered during the survey, and not including walls shown in existing drawings which in fact did not exist in the plant. As of June 30, 19 80, complete inspection pacuses #or 158 existing masonry sails had been received by Bechtel Engineering, or 74% of the total nunber of mason 191 valls.

At the time of the preparation of this report, sufficient data had been accumulated to accannt for 120 of the inspected walls:

78 Safety-Ralr%d Walls 14 Walls in baccessible Ateas (Possibly Safety-Related) 28 Non-Safety-Related Walls

• 120 TOTAL (56% of All Masonry Walls)

(* Note: These walls' require no further evaluacion at this time, and are not listed in this report.)

The status of the balance of the masonry walls and additional information pertaining to the safety-related and inaccessible walls included in this report will be stbnitted as a supplement to this report as soon as possible.

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PAGE B.2 Se table 'selow is a summary of the 92 masonry walls which have safety-

'related piping or equipment attached to or in the proximity of the.

vall, or which are inaccessible.

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• l25VDC % Ital System g

• Penetretton Roon NVAC Seiteld Welt

1) Partially fascceselble.imoperttee not Purse Air System performed for west side of wall.

2) East olde of wall edified by FCR 8t)-1009 C

• renetratlee peoe NVAC Ducts Fire Barrier

'I Purge Enhavet Fana O

• Cable Spredles soon NVAC Fire Barrier Malan Tank Systee I

E

• lt3TDC Betteries

• Caelian Water Systen Fire Barrier

• 125VDC Tltal System

• Fmergency Core Coellna Systre

• Main Steam leeletion Valves

• renetratlee Room vent Systes NOTES: 1) See Attachment A for key plena etuneing well locations.

2) Sclamic Category 1 S tees are identified with en anterlet f *).

~~_%^*.

~

~ ' ~ ~

tif N>

l N C1 tr3

..m e*

~~

SEmetAeV 8'F SAFFTY eflATF19 A38EB INA( 8't S% IP8 5 PtA9asef 1841.8.%

(AIVF RT 08.15 6S Niall AR PtMff.R PIANf, SINit% $&/

PA8.f.

,_,__ _ AUE.

hasil pigsc EI.3: vat leeN,,2 ; *-O*

y~

81F " ' g

gang.l. IDFNTIFICATim AFFECTFss SYSTIMs ATTACNm prPGAARS PanIIMAL F

C: - _.fcation System

• Containment Radiation 16mitor System Fire Protection Paging System Electric Bydraulle Cootrol Cable Fire S.ryder Telephone toe

• Feekater Regulating System

,e 25KV Ceneteter System

• 125VDC Vital System offfAC Seapply Duct to Cable Spreading Room Instrument DC Fever Segply Cable

]

instrument Treneformer 75EVA I

• tees of t.ead scactor Trip Control i

C Pcwer Fred to Cell Power Programere i

eRadiation Detection System a

• Reactor segulating end Proteetton System Reactor Trly treeter Panels

• Reactor Trly Sue Bemeter Trip Sultchaear Breakere Switchyard - Plant Terminal Connection Tur%f ne A.ssfliery Runbach System Turbine Electric Mydraulle Contral

?

• Turbine Trip Control C

Security System

• Diesel Cenerater pone Ventilation Fes Desper Fire Berrier R

Phone Line I

aA,,, pediation floattor System Centrol Room Vent ran Fire Barrier

• Emergency Dioeel Cenerator Control

• Fnernency Diesel Generator SRV Disconnect Sulach

• Engineered Safety Features System tante 84KV reed greehere e

• Spent Fuel Fool Cooling Systen i

• 125?nc Vital Systen j

L el25fDC Battery System Fagleg Systee

• Ausfliary Radiation Ifaste IIeating and vent System Fire Sarrier

• 125VfuC Vital System

• Oienleal Volume Cnntrol Charme end t4tdeman System

• Energency Diesel Ceneratore t

attvAC Fuhaust Duet for Battery Ronse

1. 480V 1.nnd Canter Cable

• Plain Steam tecletion Valtes 4

84Ev Penner Cable

• tafety injectinen System HnTES: 1) See Atterheent A for key plaPa alutwinl[ wall lDrallen't.

7) %clowle-rac emary I iteeg are Identified wiele an a escrlan (8).

. ' ~ ~ ~ "

-. - - - ~ ~.~..:' : - --. _. _ - _,..

=, - -.-

.n t'f

8*

I e

I o

{'

St> MARY OF SAFETY REIATED AMD IIIACCESSIRS.E MA%NRY WAl t.S CALVf RT l'IlFFS MutlJAR FOWER PtANT. ITNITS I & 2

__ AtFt.

Ettt tJituc Et1VAVints

.I.t'#.

IfALL IDEstTIFICAftoll ATTAClifD FIIORIMAL L (Cont.)

5000tv Spare Treneformer

' Spent Fuel Feel coelles Systee M

• t2%VDC Vital System Aemillary Radletten Usete Meating and Vent System Flee Sarrier p

• t2%VDC Battery System

• Cneling Water System Creunding System eMate $leam System Safety lajectlen System

• Salt Water Coeting System

• Servire Water end Misc. Station Service Control (3

Communicatione System Fire Protectlen

• rentrol Radtstine Montter System Ilre Barrier lategreted leak Rate Test

• Fagineered Safeauerds/Reseter Trly

• MVAC Supply Duct to Cable Sprea41em Rose g

• Radiat ten Detection Systee

• Rearter Protectinn System Beacter Regulat ten System Reactor Trly Sultcle Cear

• Spare Cahle al2%VDC Vital System R*ttery e

aEngineered Actuation Safety Features treater Centret fire Barrier Computer System Control Element Drive Module Fire Fratection r:enerator Esciter Cenerator Relay Rack 22RV Cenerating Systee

• MVAC Supply Duct to Cable Spreading Rene Onetrument Swee Main Centret Boa d Annesittster

• Male Cenerater s'ed Esciter Main Turbine thi Transformer Misc. Circuit th.t Protection

• rawer Shaping Control Element Drive Mmlule Service Treaeformer and Protectlan

• Shutd.=re Control Element Drive 86esteele s.

N01ES: 1) See Atterheent A for ley plann plenutna wall leran teng.

2) sel.mic rategory I Itese are identified witte an a*lerl*k (*).

7 2 '...-.-

~.*7*

"***7

---5--

- - - - - E

• ~E---

~*

~ ~ ~ ~

~ * ' ~ ~

~

t38 M>

a WO til

t SteetARY OF SAFETT DEIATF3 AIIB IlpCCES$8BI.E M450eRT Wall.S CALVf RT (18FFS Niert.tAs POWEa PIANT. l' NITS I & 2 Alf t.

But tDissc El1VATBole,IF j "

\\

If4LL IDElfflPICAftcIl 8E84"ES ATTACN B PanzlptAL L (ContJ 500KV Space Transformer

• Spent Fuel Foot Cooltag System M

el2$VDC Vital System Austilary Radiation Weste Meatles and vent System Plte Barrier a

• l25VDC Sattery System

• Cooling Water System Crounding System

• Main Stees System Safety injectlen System

• Salt Water Coeling System

• Service Water and Misc. Stetten Service Control N

Communicattene Systee Fire Protectfan

• Control Radletion thitor System Fire Barrier Integrated Leak Rate Test

• Fngineered Safeguards / Reactor Trly

• NVAC Supply Duct to cable Spreadina Boom

• Radiation Detection System apearent Protection Syntee Reactor Segulation Srates teactor Trip Switeln tear

• Spare cable el25VDC VItai System Battery O

• Engtreeted Actuation Safety Features greater Control Fire Barrier Ensiputer System Centrol Element Drive Module Fire Protectlon renerator Exciter Cenerator Relay Rach 225V Cenerating Spetee I

• NTAC Surpty Duct to Cable Spreading Rose Instrument Buses his Control Board Annuietator

• hin Generator and Esciter Main Turbine thalt Transformer Misc. Circuit IAilt Protection

• Fouer Shaping Control Element Drive tbdele Service Transformer and Prstectinn I

• Shutenwa Control Element Drive 96edule NOT7.$ r 1) See Atterl. ment A fer try plane cluwing wall locatices.

2) Selemer Category I ttees are identified witte an asses t=h

(*).

', = *

~.*7* *v~.-~~

~

' : '.~' :- ~ ~ t--. _ _. _.= -. - --.- ~

~~ -

to w

@O tvl

! l i

I i

ee

. - -. ~

I St99 TART OF SAFETT DILATED Alm IMACCf.S$181.E MASUNET WA14.5 CALVERT Ct.lFFS Istate FAA F0WDR FRANT, UNITS I & 2 s

FAf.f A

AtfE ettilDINE:

FIJVA f ttHI 27*-0"

'- OF 6

- ' ~ ~ ~ ~

WALL IDE3fflFICATICII RDIARIts ATTACWfB rnogggggg

}

O (Cent.)

Turbine Austilarten Mtsc. Tranneltters

• Turbine Centret Turbine Trip 121Tnc Vital Systee Sus 1

l P

• NTAC to remetrettan F..a E eauet Fene NVAC Forse teamet Fane Fire Barster q

• Fenet rat toe Snoe MTAC I) Parti,tly inacceselble, inspeettom met Furge Air Supply Duc t petiermed for meet side of wall. Shield Well

2) East well to be modified by Fra 80 5001, a

• NTAC Segyty Duct to Suttchgeer toon Not Water Ctreutetton Fump i

Not Water Wratlan System yg,, g,,g,,

Furge Air Supply tinit S

Fire Protection testa Cenerator Escitetten/ Main Turblee System

• MTAC S eply Duct to Cable Spreading Room Fire Barrier lategrated Leek Bate Fenel

• Freesertred Backup Nesters Security Systee Steam renerater Feed Pump Turbine T

• Battery Rooe NVAC Ducts

• Emergency Safety Actlestion System Fanete Fire Barrier i

1 rc

• West remettetton Bone Freneure Transettler l

• Cantainment Spray and Safety infectlee System evalume Control System NN

• Eagineered Actuet ton Safety Feature Systre Clieeltal Velue Control Garpe and Lerdous Systen Fire Barrier Annenciter Logic Fanet Oestral Volume Control Batic Acid Sveten Liquid Waste System Steen remerator System

• Ref acitag Water Systee Reacter Coelant Steed Filter

• Spent Fuel Coollag System Fire Fratectlen elste,e Nest techange System

• hemastiler System

- * - ~ ~ -

980TT.S t II

• ee Atlaeliocat A for ley ploeg elmsming wall Ipe at te*eem.

s

2) he l *= l e rater.ory i Iteeg are Identitled wiel en a sers h (*).

C-

._~.~.~~.r'-~.

~

~~-~;~~.'~~~~._ _ _.,. _. _. ~.;-~.~-

- - - - - - _ -. -..-...._.;_------=--

I

~ c, O t'1

i I

o

)

I.

I 1

5t99 TART OF SAFETT RESATFD AIS IMACCESSIRt.E MAWIIRT Wall.4

( ALTERT CLIFFS IReCLIAR FuWra FSANT, itNITS I & 2 A Ult.

Bultallec ESIVAf f rMI I I '-O" i

WALL IDEttTIFICAfloll ATTAC18ED FIIDESMAL JJ Inacceentble, inspection not performed.

KK Shield tha t.

l inaccessible. Inspectlan met perforord.

shleid Wall.

LL Inacceselble, laspection not performed.

shield ungl.

M Inoueselble Ehleid Wall. inspection not perferned.

NN Inaccessible, inspecaten not perfereed.

(W)

• Spent Fuel Cooling Systee Fire Protectlee

• Cable Tray System Ivoinerellsed Water System Flee Sarrier Wente Cee S otee T

B.frhtlas System FF

• Engineered Actuotton Safety Feature System tire garrier Telephone Systen QQ

• Engineered Actuation Safety Festore Systee Fire Protection Lighting System RR Eleestar Culde Ratt elsediane Neet Euchanner S otee F

of>geoffler System

• Safety injection System

• Fnernency 7temet Cenerator

• Candennate SFetem

• HVAC For Cmetainsent espent Fuel Conflas System

• %ampling System eulesensle Tank neminerettied Water System Caneews Rolleert tee Waste Systee 1.lguld Weste Sveten NVAC For Carridor HVAC For letenen Heat Eschenger Inscresetble. Inspertion not performed.

Ehleid W. ell.

18 tearreestble. Snopertion not performed.

u m m u.se la0 TIS t il se+ Atem.hment A far hey plann minnelne wall Incat lan*.

2) % l'. ale s'ae erary I f lema are 1. lent ified ulc h an materlsh (*).

<=.'7--~~~~._r;?..-----..

' r ' =%~;..: -. ~~~~ ~

_..--.~T=*~:="^~=^'-

--- T 7 = ~ ~'

- - JT ---

~~ ~- -

.tIf 'U.

p HO H t4

r

'I I

5t994 ART OF SAFLTT REIAtyp ABID IllAffESSInif. StA%fiefe? WAIJA cal.Vf RT 4:1.1995 estg ilAR FtmEn rtAlst, etNIT5 i & 2 Fart

_ Algg. _. DHILDllsC El*VATI0ft _,_27'.q' _,

~

4~~ cF 6

ArrrCTFn SvSrim ATTACWID RDt4RKs FaoxtMAL IR!

vy

.Imacceselble Inspeetten not pertermed.

Shield WII.

inacceselble. Inspectlee not perfereed.

ing Shield Wil.

II laacreasible, inspectlen met perfereed.

Shield Wil.

inscreselble, laspectlee not perfereed.

Al FerRe Air System Shnend Wil.

Flent Air System

• NVAC For Fenetratten Room MVAC For Costeinnent Shleid Well and Fire Bartfet.

NVAC For Sultchagor Room A2 Forge Air System Alr Line

• Austllary Feek ster System IeVAC For Fenetration Room s

Fire h erler.

j A)

• Letdown West techanger System

• Desselfler System

• Engineered Actuetlen Safety Features System h

MVAC For Letdown Neat Fechanter Portfally Inaccessible, Inspectlen met HVAC Fos Corrldor Perferard for north olde of well.

Shield Wall.

freinerellred Water System A4 Lightleg System

• 5 rent Fuel Coolina Eyetes j

A5 Fire marrier.

1. f astneered Actuation Safety System

• Spent Fuel Coollag System Fattially tuarreestble, lespecting not M

performed for west olde of wall.

eSpent Fuel Coellet Krates HVAC For Asaillery Building 180TF$ r 1) See Astachau.nt 4 for key plane ale, wing wall inemelena.

2) setsele C4eer.ory I feese are idene f fle.1 wis h an asser f d (*).

-...--.:...--.-....:._~~.. __

~-~_..'-_..a;

.L.__.~-----~~~..,_._.._.

~

CIf M H C1 N t't

^

f f

e i

i I,

e,

,r SometAnf or SartTT atlAtta Aus lilacCF.sStal.a senSons? WAB.ls CALVI.af CLIFFS seteC3.FAR POWER PIANT, ttNITS I & 2 AUE.

BullDillC ELEVAftstel 4 % '-4"

~

IRAS.L IDEIFFIPICAftcit AFFECTts STSittes ATTACHE!D MathMS Pa0ElstAL i

C

• elVAC to lag and Test Roos 12SVDC Bette77 System 1

9 ma urity System c

1. firteerolegleet PqelPeent Panel Fire Barrier

• VibreClan Monitoring Penet

• aedlettee k nitoring Pene!

1. Flee Protettlea

• Servlee Water and Misc. Stetten Servire S atem t

• Re.se ter Proteetlan System E

eNVAC Control Penet fire Servler

• Servlee W. ster and Misc. Stetten Service System 12%Vit System

• Weste Proteselng Sretem

• Rearter Protection Sretem enamese Centrol and Fire Proteetten System C

Fire Protectlen MVAC For Central Rane Fire Barrier

• Televielen Centrol Panete P

• NVAC For Centrol Room HVAC For ritchee

• Vibret ten P6xiltering Panel Q

• NVAC To Otert Storene Room Fire Barrier NVAC For Ette%en

• l. nase Parte stonitoring Penets

• Televielse Costrel Pene!

Security System Panel CC

• seacter Coolent Seeple Systes Shield Well

• steen Cenerator Slawenen System

• Component Coollag Weser System t.lp:hting System 4

• Mlar. Weste Simple remel Det inacceselble, InePection met performed.

NOTES: 1) See Atteehecat A for key plane ohnwing well t= melena.

2) selselr recetary I Iteen are identitled with me asterlek 18).

__CT

.J*

. _. _. = =. _. _,..

.t38 N>

HO l.a8 el

t o

St#etARY OF SAfETT BEtATIB AND IRACCESSISt.E ftA500fRV WALLS CAL 9fRT CLIFFS MUCLFAR F0WER FIA8tT, llNITS I & 2 FACE _ L OF l AUX.

DUIl.DIIIC E(KVATIfut _A},',-0*

$8 WALL IDE8tilFICAF10N "E""""I ATTACNED FROXIttAL 00 Inaccessible, toepeellen met perfereed.

Shtete Wall qq

• NVAC For Switchseer Roos

• Switchaear io e outlet System PertaallF tancreselble, toepecttee met N AC r.r Fur e Air 5,ete.

R f....,y. tee "l,', '-d ', r e-a= e ia e' -8:i-e e,,

e,

SS 84WAC For Switchgeer Rose Fertfalle Smacceselble, toepectlee not NVAC For remetratten and Emergency Core Coeling P',rfer d I,or weet side of well.

System, Fump Reese, and Assillary Building g

TT

• NTAC For Switchseer Room F*rttellF inacceeetble, toepection met NVAC For Feargency Core Coeltog System. Fenetratten Ferfeteed fer west olde of well.

Races eni Auslitary Sullding ygyy

,ygyy W

erenettetton Room Pressure Indicater

• SulichRear loom Outlet Damper System Pertf ally inacceselble, Inspection met eFVAC For Switchgear Rose Perfereed for meeth olde of wall.

HvAC For Furse Air System Al NTAC Setura From Cask Leading Ares

• FeerRency Diesel Generater Disconnect Switch Fire Barrier i

Plant Water System A2 eNVAC Return free tag and Test lastrument Room Fertf ally inscreestble, inspection not Fettermed for west side of well.

A4

• NTAC Supply For Log and Test Instrument Itone

• • I

Partially teacceselbte, toepection met A9 Fire Fratectlan

• NVAC Supply and Wester for ciert Storate Room Ferformed for west olde of wall. Fire Barrier

(

Consioilcation Systre Fire tarrier Listing Systen A30'

• STAC Supply, Return and Nester for Oiart Enon Fire Fratecties ar[

F Ine ible a

tien not All Autoestle Tottage Sequlater NVAC Kitche t Eideasset 3

• HVAC Return for Otart Storage Rene Partlally teacceselble, toepectlen mot performed fer opeth elde of wall.

All

• HVAC Segyly for tsg and Test Ins t reament Rose Fire gargler t

Is0TFSt 15 See Atteel-nt A for bey plann showleg well leerau tam.

2) %cleole ("ategory I Iteen are $ stent 9 fleel wiele mee agregld (8),

( _ -----..~Y.~,17 2.

n.

... " * ~ '

~~.".I,.?~~

. - - -.. -. ~

'.~~~"O.'--

.S~

~

.e-L.

... ~ ~.

m.

1-

- = * ~ ~ ~ -

I r

.~n b tvl

e' f,

St99%BT OF SAFETT BEIAffD AID IMESSISt2 ItASONST WAl.13 CALVERT CLIFFS IIUtt.fAR F0WER FtANT, UNITS I & 2 FACE a _ or i AUI.

SUILhlIsc EI27*.UM J3'_.e*

f t

IIALL 15EIrtIFICATICII N8 ATTACIIIS PRDIIMAL AI4

• IITAC Reterm for Log and Test teettet Room yg,, g ggg,,

Als

• Reacter Cooling Semplies System Shield Wall l

• Ste e remerator Slowdove System

• Companent Coeling System A16 atITAC Beture f ree Flying Fenettetten Room Pertlelle leerceselble, Inepectlen met Nitrogen Supply System perfereed f es north olde of mall.

• Stree Cenerster Slawdove Systre Fire Servler

• Weseter Coollag Systee Shteld Wall Alf Pertf ally teaccessible, leapeggge, e.g Perfereed for earth olde of well. Shield AIS Fire Protection

• Duct for Fenettetten pone t eauet Well pg,, g,,,g,,

Blowdown System II **"I" Al9

1. Diesel Air System

• Serelce Weter System A20

• Serelce Water Systee

• Diesel Alr System Fire Protection A21 Boof Drain System

• f eernency Diseel Cenerstlen System Cesenue Redloactive Weste System A22

• sefuellas Water Systen

• Sump Flying i

NOT75: 1) See Atloclament A for hey plane ahnving wall 8. cat lane.

, i

2) Selsels Cateaavy I Stees are Identitled with an esterld (*).

l !

t <-

: ~. --.

lW M l>

e N C)

Lie tel i

i i

k e...

f PAGE B.16 e

l h

t 3

~

7 i-t, S.

i I

~,,

.s.

i e

E g

'l

j gs ag 5 1 tl t

=

= :-

e lb =i 2 2S 2

i 3

m t

8 8.

8 11

_2 I

gs 3 3

6 i

o_

hI 2 E

I}

2 2

o r

4.

i

. =. =.

3d 4 5!

2 3 8:

e s

5 3

=

.f 1

1. _-

.s

.I.

O[

lI e

C

• e g

?

i i I

2:=]

J. :

2 1

E 2.

8 Lit E.

f,s

E-

3. 3 st et g

8-. ft

=0 i

E f

f E

5n 6

E

.i.

I i

a

~u PAGE B.17 2.

Provide a re-evaluation of the design adequacy of the walls identified

)

in Item 1 above to determine whether the masonry walls will perform their intended function under all postulated loads and load combinations. In this regard, the NRC encourages the formation of an owners ' group to establish both appropriate re-evaluation criteria and where necessary, a later confirmatory masonry test program to l

~. quantify the safety margins established by the re-evaluation criteria J

(this is discussed further in Item 3 below).

s.

Establish a prioritized program for the re-evaluation

1. the J

masonry walls. Provide a description of the program a..I a detailed schedule for completion of the re-evaluation for the j

categories in the program. The completion date of all re-evaluations should not be more than 180 days from the date of this Bulletin. A higher priority should be placed on the j

wall re-evaluations considering safety-related piping 2-1/2 inches or greater in diameter, piping with support loads due to thermal expansion greater than 100 pounds, safety-related equipment weighing 100 pounds or greater, the safety 3

significance of the potentially affected systems, the overall i

loads on the wall, and the opportunity for performing plant i

I surveys.and, if necessary, modifications in areas otherwise inaccessible. The factors described above are meant to provide guidance in determining what loads may significantly i

. affect the masonry wall analyses.

Response

The table below is the prioritized schedule for the re-evaluation of the masonry walls identified in Item 1 above.

As suggested in Item 2, BG&E is initiating the formation of an owners' group, and an industry meeting on this subject is planned for August 4 and 5,1980, at the Baltimore offices of BG&E.

• T%*

79'.4 N

WmN

=mM w@ m em e pg.

w--

.--w w.we-s.,

ew-w- - -.,, - - - _,.

.,---m.

w w

ge er

,em

l y

i f'

SCNFDULE FOR RE-ETALUATION OF MASONRY Watt.5 CALVERT CLIFFS 91UCLEAR POWER FlANT, UNITS I & 2 FACE I OF l

}

PRIORITT RS-ETALUATION CIMPLET10N DATE pegglyTION 1

5/15/90 Welle Supporting Both large Safety-Related Piptg end Large Safety-Related Ceedett*

2 8/22/00 Welle Sepperting Large safety-Related Flplas*

3 8/29/00 Wello Supporttag large Safety-Related Ceedelt 4

9/5/00 Welle supporting safety-Related Egelpment other Thee Imree F8 Pig er large conduit 3

9/12/00 Walle Boppettig Both tarse Non-Safety teleted Piping and Large lese-5efety dieted Coedelt 6

9/19/00

,Welle Supporties tarse Ben-Safety Related Ftplag i

i 7

9/26/90 Welle Supporties Large leon-Safety Related CeeAtt 8

10/3/00 Welle supporting Non-Safety seleted Egelpment other Thee large Flytus er large Ceedelt 9

10/10/00 Welle Seppertig Nome of the Above. Det ghtch are la Prestetty to Safety Related items

• NOTE: A preliminary inspection of all areas indicates that in no instance does a masonry wall support large safety-related piping.

O t'8 to H

co l

l f

3 a o e,

^

~

PAGE B.19 3.

Existing test data or conservative assumptions may be used to justify the re-evaluation acceptance criteria if the criteria are shown to be conservative and applicable for the actual plant conditions. In the absence of appropriate acceptance criteria a confirmatory masonry i

wall test program is required by the NRC in order to quantify the safety margins inherent in the re-evaluation criteria. Describe in detail the actions planned and their schedule to justify the e re-evaluation criteria used in Item 2.

If a test program is necessary, provide your commitment for such a program and a schedule for completion of the program. This test program should address all appropriate loads (seismic, tornado, missile, etc.). It is expected that the test program will extend beyond the 180 day period allowed for the other Bulletin actions. Submit the results of the test program upon its completion.

Response

The re-evaluation criteria for masonry walls will be submitted within 120 days of the date of the Bulletin received, and justification for the re-evaluation criteria will be submitted with the re-evaluation report within 180 days. Justifications will be based on reference to effective codes and established standards of practice related to concrete and masonry design typically used throughout the industry.

It is anticipated that such justification will be considered apprenriate, and that a test program will not be necessary, except as required

• ,o determine project unique structural properties such as collar jo12t strength, and any other properties for which construction test data is not available or cannot otherwise be determined.

s

._