ML101060346

Unit #3 Containment Delamination Update

ML101060346
Person / Time
Site:	Crystal River
Issue date:	11/20/2009
From:	Progress Energy Florida
To:	Office of Nuclear Reactor Regulation
References
FOIA/PA-2010-0116
Download: ML101060346 (83)

Text

November 2 0 th 2009 Progress Energy e-n d a +f~,~V4St4, $ww4 '*W-~~ 4f*r Introduction

' Plant Overview SCR3 Containment Design Features SGR Opening Sequence & Identification of Delamination Investigative Approach SCondition Assessment Root Cause Analysis (RCA)Operational Experience (OE)Design Basis Analysis (DBA)Repair Approach Summary Comments / Questions.Progress Energy 2

-Cr- Ri er'3 .0"'er.ys a V V. view SBabcock and Wilcox Pressurized Water Reactor Location:

Crystal River Florida 2609 MWth° 838 MWe~ Commercial Operations began 1976.. Progress Energy 3 Routine refueling scope o Off line maintenance and fuel for 2 years SSteam Generator Replacement (SGR)Extended Power Uprate (EPU) -Phase 2 o Extensive steam plant work Taking advantage of longer OTSGR duration o Steam plant efficiencies Part of total -15% Uprate ihwk ... , Progress Energy 4 Containment Opening*Lifting and Rigging*Cutting and welding I~Progress Energy 5

• Generator Replacement Stator, Rotor, Exciter* Moisture Separators.

• MSR Drain Coolers* Lube Oil Coolers* Feed Water Heaters* Iso-Phase cooling D link Floo. " " Progress Energy 6 CRYSTAL RIVER #3 DESIGN FEATURES Progress Energy 7 Hssio.n;-Product Barriers IM Sdhematic"plifted r ...........................................................

Barrier,#

.3 -Containment Li~nerJ Barrier # 2 -Reactor~Ve-sseI_&_Cooiaht~

Piping FBarrier'#

1-. Clad ding~Enclosing The Fuel Tendon depiction is for illustrative purposes and is not an exact scale 8

ý, R 3; Cd --'-n' t a i t bimensions:

Dimension

>jj i Vue Value Containment Outside 137 ft 0.75 in Dimension (OD)Dome Thickness 36 in Basemat Thickness 12 ft 6 in Liner Thickness 0.375 in Wall Thickness 42 in Buttress Wall Thickness 5 ft 10 in Vertical & Hoop Conduit OD 5.25 in# of Vertical Tendons 144# of Tendon Hoops 94# of Tendons per Hoop 3# of Prestressed Dome Tendons 123 9 SGR OPENING SEQUENCE &IDENTIFICATION OF DELAMINATION o Progress Energy 10 SGR Opening Dimensions

@ Liner 23' 6" x 24' 9"@ Concrete Opening 25'0" x 27" 0" Progress Energy 11

'1 Ur. Progress Energy oncreie -R-Mo '" I C, t A Lih er e a Sequence 13 etmia 1:!? .C -I1tt4 2 N .3 4 I.~Progress Energy 14 PP $ P A ~ P < ~ SPP,'7 PA*7 ~ P V PP P~ P P P ~ P Pt ~ IP -P~Note -Tendon depiction is for illustrative purposes and is not an exact scale K j/4Iw0N5 15 INVESTIGATION APPROACH SProgress Energy 16 I I I I Condition Assessment Construction Technology.Laboratories (CTL~)Design Basis Analysisr MPR Associates, Inc Ios plement Reprairss<.Contractdr,!wTBD~

ross Check k& Progress Energy pair AlIternatives Analysis%ictural Preservation Systems (SPS-)..17 Isis C S .._ -.o Condition Assessment

& Laboratory Testing NDT -Construction Technology Laboratories (CTL)Labs -Mac Tec, Soil& Materials Engineers (S&ME)Other Field Data -Sensing Systems, nc; Core Visual Inspection Services (Core VIS), Nuclear Inspection

& Consulting, Inc;Precision Surveillance; Gulf West Surveying Inc; AREVA Root Cause Analysis Lead -Performance Improvement International (PIt)Owner's Support -Worley Parsons, BechtelProgress Energy 18

....d.m. ..

on.ti0 -ued Design Basis Analysis Lead -MPR Associates, Inc.Owner's Support -Worley Parsons Repair Analysis* Lead -Structural Preservation Systems (SPS)* Owner's Support -Wiss, Janney, Elstner, Inc (WJE)° Industry Support Exelon, SCANA, and Southern Company , Thinkt Progress Energy 19

..ra S.toný- F*aio a S 0 .J: Containment T~ec'hnical.ntrae I Project Analysis _____ Conhtrols Root Cause Design Basis 7 Nt.i, INO ontr~act Analysis >4. _"________"_J AdministrAati

/Condition

...NR IchedUiig Assesment Repair Analysis, Public/ Media -Financial 11--Nuclear 20 uvear afot", 0" -ht -C 0, -thklttoeý (NSOC)ý.,Cl bmainmentSu -om.mirree M be- h em rs ip.-Mhbe TRI k Progress Energy 21 CONDITION ASSESSMENT 4 Progress Energy 22

'di"on -A§-,9'i-,evgffl, erit, ctiviti 6-ý'.Om --d blOt dlor:'Plahhe Determine Extent of Condition Characterize the extent of delamination at the SGR opening Determine condition of other portions of structure Non Destructive Testing (NDT) of Containment Wall Surfaces Use of Impulse Response (IR) Method Comprehensive on external exposed surfaces Accessible areas in adjacent buildings I ihkPeet Progress Energy 23 "Antio-oh A-,-`:- 'rhi ýýAA 0 -0 0 ssess en ct.0 &6ýPianned,, mptere Concrete Cores Used to confirm IR results (over 80 cores)Visual examination of core bore holes with boroscope to identify if delamination present ASME Section XI IWL visual inspection (affected areas)o Containment Dome Inspections NDT IR scans in segment above the SGR opening Concrete cores with boroscope examination of bore holes Physical survey with established benchmarks

.Progress Energy 24 ssessment'Tdchues mpu se, es onsti IR Equipment Primary test method used in this evaluation

@IR Performed in the Field jProgress Energy 25

-'-'-C6 ition Ass-'es-smentl ec niqueý-roun e M daw"","'-dknerraring M R): Ground Penetrating Radar (GPR) Equipment Locates internal features (rebar, tendon conduits, etc.)o GPR Performed in the Field sProgress Energy 26 Con ýn ecnmque dlitiio.ný'A$`

sessm6 S,.,.,Cdre,-,B.br6s, oroscopic,,E) 60, Examination

-Inward View Cote en ae.I oe#3 Examination

-Side View II Core 51, Gap 1 Depth 5-1/4" Gap 1 Width Less than 1/8" , Progress Energy 27 0.C hdition" Assessm ht"T`dh k, e e .n qu M ac O'ho-(/E es.IE Equipment Ability to determine depth of delamination o IE Performed in the Field Progress Energy 28 P I View,-Buttress #(typical)Source Drawing: 101-112 SHOOW Construction 29

• .-'*'- i r A C B IR scans completed per PT-407T: Blue = no delamination Actual IR scan output data: Blue = no delamination Yellow= transition Red = delaminated Drawing scale is not exact A .B C~I A I R I C' I A SB C G H'K L ST-y z AA-ABI AC 'AD D -E F G H J, K H 'P o S U_T~~,x~.--

---

---- EL 250'Pour 16-----------.

EL 240'Pour 15-----------

EL 230'Pour 14-EL 220'Pour 13-----------

EL 210'Pour 12-----------.

EL 200'Pour 11 II--- ----EL 190'Pour 10-I --- EL 180'* Pour 9---------.

EL 170'Pour 8 Pour- EL 160'Pour 7---- EL 150'Pour 6 EL 140'Pour 5-EL 13O'Pour 4----- -----EL 120'Pour 3-EL 110'Pour 2-----------

EL 100'Pour 1-----------

EL 90'11]nt~rmnediate Bldg Roof EL'149: 6"-1 "x 25':20' x 22'EL 128'"8' x 15'EL 128'AE AF~AG7'AA'ýAB'7 44.AC,', 1ý 6'x 40' @ 1 X EL 164" 'x EL 150" Equipment Hatch I/\4-...-.10'X60'-7 ~13' x 42' 1 lOx 16';i i I Conclusion

-~ IR scans-With cobnfirmatioh 4 4 core bores identified delamnination only~ PrVs nm in the Buttress 3-4 span above the Equilpmient, Hatch, as shown in red above -30 MI 09r)* t .-. -U

• It I B -C ,"'AC 2- j'-C--A' B~<JK L1.IR scans completed per PT 407T: Blue = no delaminatior Actual IR scan output data: Blue = no delamination Yellow= transition Red = delaminated Drawing scale is not exact"P R Fuel Transfer Bldg Roof EL 200' 4" EL 180',G1 KL P ,~ R S TU V "~WAB ~AC AD D E'- ~F" KM ! ' 0-S 'T U V W y Z- AA 7 AB <AC AD Pour 16--- EL 240'Pour 15-EL 230'Pour 14-----------

EL 220'Pour 13-----------

EL 210'Pour 12-- EL 200'Pour 11 Pour---- EL 190'Pour 10--- EL 180'Pour 9-Pou -EL 170'Pour 8--EL 160'Pour 7-----------

EL 150'Pour 6-----------

EL 140'Pour 5--- EL 130'Pour 4-- --- EL 120'Pour 3-----------

EL 110'Pour 2-----------

EL 100'Pour 1------EL 90'3'Xx 96' xi1S'.8'x .16'EL 160' T 6'x 24'10' x60> --EL' 14 3'Intermediate Bldg Roof EL 149' 0" 28' x Intermediate Bldg Roof EL 149' 0" EL 119' -8'X12 EL 122'JProgress Energy 31 3Cbonclusion

'- No delamination identified in these Buttress S9, -N6 mO09 Z- f. 17 ID ,1 tress #-4 NOMR 11,t 2" tOU FOR 12 MES 1W ELIW 001101 EL tO Et- R AUX- BLDG. ROOF EL. l1r-8" INTERMEDIATE BLDG. ROOF EL. 149'-0" 04- 1.0'E SIPA TOIO5011 go * -s'ttr -S 6-1 D u fN 7 09 SButtress

1. 51 42 .40 .0 Butess #bL tresisfl.!

buiiesis 2 i 33 B A C.73 4z;A B A B C C D E F G H I 024 J K 33 2 9 L M N I 0 O 21 P 42 Q R FUEL TRANSFER BLDG. ROOF EL. 200'-4" D E F 68G H 67 1 J K L a77 M N 0 9 76 P Q R EB S T U V W 75 X 505 70 Y z AA AB AC AD ,0 4 D E F G o H3 I 62 J K L 64 M N 0 p Q 65 R S T U v 6%w x Y z AA AB AC AD I.j1 4 4 I A POUR 0.ELMrs EL00 50, 0'L021D_INTERMEDIATE BLDG. ROOF EL. 149'-0""I.INTERMEDIATE BLDG. ROOF EL. 149'-0V*000 BORE410 05L54110100 BOR NOT9550 OEL TED05 O 05 ooES 00 0500500000000 sm x0504550 Conclu~sion

-Core bore hole(s) bo'roscopic e~xansonte-Btrs spans confirm the JR results, that no delamination has occurred~K~

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-,ý..Bonnas T m l I A B C 4/ /mmmmmmm------------------

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W40, ITOM11 L 2f PESlMWL*9 13 IYJTTRESS 4.1* CORE BORE WITH 1ELAMINATION 9 CORE BORE NOT DELAMINATED 0 TO BE CORE BORED T CORE BORE 0RILUED SGR 2Or OPENING F___ 47 AD /52 POUR 16 EL. 240'POUR 15 EL. 230'POUR 14 EL. 220'POUR 13-EL. 210'" POUR 12 EL. 200'POUR 11 EL. 190'POUR 10 EL. 180'_POUR 9 EL. 170'POUR 8 PR EL. 7'POUR 7 Conclusion

-D~elam-ination has'ionlIy~

been observed in-core bore hole(s)bookpceaý n hbtrs 3-4 span, as accurately pre~dicted by IR 34 34p AT CORE #46 48 HOri.20, I'T hddh s"-,:,..E! u-, ft r 0- s sý 2 I 60 N (BUTTRESS NO 2 120" tBUTTRESS NO 3 Additional tendons to be detensioned prior to closing SGR opening (pre-outage plan)Tendons Removed Additional tendons to be detensioned prior to closing SGR opening (pre-outage plan)Source Drawing: 0425-006 SH001-SH 000 35 EL 248'-9 3/4**EL 245-7 1/2" EL 242'-5 1/4'EL 239'-3" EL 236'-@ .3/4" EL 232'-10 1/2" EL 229'-8 1/4'EL 226,- " EL- 22" -3:3/4 EL'1 I/.ELo 213 -EL 218 8 3/4 20' ... .-4 1:, /2 L28 -81/4 EL 2014-'F1 EL W. -9 3/4'473' < 3": EL 1944- 1 /2'EL I,"- 5 /4" EL 18'- 2 3/4'EL 14'-11 3/4" EL 181 8-3/4'.EL 1,--5 31," EL 1J71 -1 1 /4 EL 19- 8 3,4" EL 165- 53/4" EL 182'- 1 3/4"'EL" 58 II 3/4," EL 1558-S 3/4" EL 152-5 3/4" EL 149- 2 3/4" EL 145'-IlI 3/4" EL 155'-8 3/4" EL 139-5 3/4'EL 136'-2 3/4" EL 132'-I 3/4" EL 12'-8 3/4" EL 126'-5 3/4" EL 123'-2 3/4" EL T19'--11 3/4" EL 116'-8 3/4" EL 113'-5 3/4" EL 110'-2 3/4" EL 106'-11 3/4" EL 103'-8 3/4" EL 98'- 9 3/4" 0 Ri'FE1L1-I--------------------

-- i-i---">--

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11- -I -------..--------_% ----- ---I2 J _ I-I-------Opening----------- --- --7 --- -- ------" ------" --------------4" ----------4-"-"-- -"4 -"- -- ----------------------- -- ----- -- -------- -------BUTTRESS NO 4 RBTN-42H47 RBTN-42H46 RBTN-42H45 R9TN-42H44 RBTN-42H43 RBTN--42H42 RiSTN-42H41 RBTN-42H40 SRBTN-42437:

jf I .RTIJ-4243517-2H3 5 RTN--42H34 R-9N-42H33 RBT8-42H32

-988-42.31 R-T8-42H31 RBTN-42H30 R 9TN8-42H29 RHT5-42728

'RBTN4-42H23 4 .4.2: RTN-42H2 .Z -r -211-242-RBTN-42H21-j6 ýTN-ýý2.2-RBTN-42H19

[ R13TN-42HI8 A R-TN-42H17 4 RBTN-42H11 RBT49 -42815 RBTN-42HI4 R-TN-42H13 RBTTN-42HI2 RBTN1-42H1I RIBTN-42H10 RBTN-42H9 RBTN-42H8 RIITN-42H7 RHTN-42H6 RBTN-42H4 RBTN-42H3 RBT---42H2 I R-8N-42HI E

16,64 Butird'I 12 ES SBUTTRELSS NO 3 180"*BUTTRESS NO 4 240'tBUTTRESS NO 5 I Additional tendons to be detensioned prior to closing SGR opening (pre-outage plan)Tendons Removed Additional tendons to be detensioned prior to closing SGR opening (pre-outage plan)Source Drawing: 0425-007 SH001-SH 000 36

• 1ii "e EL 247-9" EL 244'-6 3/4" EL 241'-4 1/2" EL 238'-2 1/4" EL 235-0" EL 231'-9 3/4" EL 228'-7 /2" , [' ' 3;.4 .5 1 EL 2ag'-6" EL 206'-31 5/4" El 203'-' 1/2" EL 19'-11 18 /'" EL 196'-9" EL 2 EL 293'-6 3/4" 9L10'-4 1'/'2" EL 18078-I 3/4" EL 183-0 3/4" EL 1648-4 3/4 EL 187'-1 3/4" EL 857-18 3/4" EL 180-7 3/4" EL 177-1 3/4, EL 174'-1 3/1-EL 1748-18 2/4 EL 167 73/4 EL 184'- 4 3/4'EL 181'-1 3/4" EL 157'-10 3/4'EL 1542-7 3/-EL 151'-4 3/4'EL 148'-1 3/4" EL 144'-10 3/4'EL 141'-7 3/4" EL 138'-4 3/4" EL 135-1 3/4" EL 131'-10 3/4" EL 128'-7 5/4" EL 25'-4 3/4" EL 122'-I 3/4" EL 118-10 3/4'EL 115 -7 3/4" EL 112'-4 3/4" EL 109'-1 3/4~'EL 105'-10 3/4" EL 102'-7 3/4*'EL W8-I 3/-"--' 1 ---I- -I Lz--i~ ---I""'"" -I, -I~I- -ii"----1-'ml--F lijif~1~~------------------

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--SGR-Opening-/-- ------------------------------ -----" -"" --"---- -----2 --- ---/---- -- "------ --- --- ----------------"- -----------*-- --------it' t I iii -I--it Ii"'it'K~iEt'I-- I I -IITI--4---~ ----H 11111 7F:z4zr--"1--------------------

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------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- -- --------iii"'ii--~~~1~~I]--ii--~ I, tidy"fl-I~KillI-I"--~uAul-r --i--I--RBTN-53H47 RTN2-53F146 RBTN-53H45 RB1-53H44 RBTN-53H43 RBTN-53H42 R1TN-53H41 REIN -534ý39:: BTI-'H3 88T19-53928 8829-53937 RB29-53H3N

• ,RB TI' 53H31 RBN- 53H35 R8B9-53434 R8TN1-53H32 8829'i-53431 RTN--53H25 RBN-53H20 R8828-53H29 RBTN-53H2Z PBTN--53H27 RBTN-53H22 8R8TN9- 53H 21 R2TN-53H21 RBT-53H40 RBTN-53Ht9 RBTN--53HI7 RBTN-53HI7"RBTN-53H 64 R8TN-53H13 RBTN-53H42 RBTN-53H13 RBN9-53H18 RBTN-53H9 RBTN-53H9 RBTN-53H97 RBTN-53H8 RBI2-53H5 RBTN-53H4 RBTN-53H3 R8TN-53H2 RBTN-53HI 0o 0 0 0 000------- ----.-__ _ L-- ---- -- --_----------------

-~ ~ ~ ~ 1 -------~Pt- ---t-- -- --,

TrES lea EQUIPMENT -I ACCESS -MqTFS 1*Additional tendons to be detensioned prior to closing SGR opening (pre-outage plan)37 R3 1 al-T-ýY ema c-an ff Pbbl to'- (foe' horizonta-I te- ndon 53H27)SECTION Source Drawing: 425-020-SH-001-SHOOO 9o Progress Energy 38 Tendon Pattern at time of cutting SGR Opening-Energized Tendon-Removed Tendon I-U I I-1-1/EL 210 EL. 2W~SEL.H Wu a W.ff U W-EL 17U-EL i~Buttress (typical)ii I (tendons continue below)IHI I I II I ~EL 14t?39 C,ý, 2, renaon,--, 6fM Buttress # 3 1 Tendon Patterr time of cutting Opening-Energized Tendo-Removed Tendor R Mfl t"?1fl4uI" -;113"PO""l,.2mI~

-R3TN-WI iat SGR nr~n~MM1-II ýqa"ýw ýFat f31--SIýMm 9-E mRwn MrwTN" RUT""-A91"4MM *FO P,1 R~wTmio a RK1T4,IIv.""Ma as Rn#.,M4-Buttress #4 Buttress (typical)40 VO. Sectmon-,,ý.

-C Maw-2/'B LINER, It.G5I -.0it P RE \CTOR BLMG.Wall Section at SGR Opening (elevation view)Source Drawing: 425-033 SHOOO FIELD CLUT, TO SUIT AT EXIST. REIN PENIETR. SL Is8Y, 1l-3 @'-4 0 '(C, 'P F "E TR EXITING- REINF.;'Energy 41 ui away., (coho.Bottom of Ring Girder Wall section at higher elevations showing additional stirrup reinforcement (elevation view)Source Drawing: 425-033 SHOO0 I ress Energy 42 Suftress_C* .U. awav..tI~aG (4I- PER ~~4S1~i 4A53.2.Pf3.

Buttress match-line Wall Section at SGR Opening (Plan View)Source Drawing: 425-033 SHOW0 BUTTRESS#1 PERSONNEL ACCESS BUTTRESS #6 BUTTRESS #6 43 BUTTRESS #4 Alpm ehD Re ht HAt: penin ht E-guipme sinford- eme 1972ý', 44 ROOT CAUSE ANALYSIS SProgress Energy 45

_aus le rics-e naiys-ls, RV, Pit. M, t V.0 e, ..at ure 17ýn4eA 6-d-Jr,"Y'

--A'd- asW N b es Y! -h 2009 80 70 60 50-40 30 20-o10 I.. ...* External Events Operational Events* Inadequate Containment Cutting* Inadequate Concrete -tendon interactions

• Shrinkage, Creep, and Settlement

• Chemically or Environmentally Induced Aging* Inadequate Use of Concrete Materials* Inadequate Concrete Construction

• Inadequate Concrete Design due to High Local Stress I.-~~ 0 0000 0 0 0) 0 0 0N 0~ 0 0) 0 0- 0 0) 0 C14 (N C14 co MO ----------(N Progress Energy 46 Impulse Response (IR) Scans Boroscopic Inspections Core bore holes' Inside the delaminated gap Visual inspections Delamination cracks at SGR Opening Larger fragments from concrete removal process Containment external surface ln Progress Energy 47 i".4 _.C na. Y9 11S, Rd w M, ir Aff DaI&ACquisition(If d), Nearby energized tendons lift-off (vertical and horizontal)

Containment dimension measurements SStrain gauge measurements o Linear variable displacement transducer (LVDT)gap monitoring Building natural frequency SPrgress Energy 48 Ana ys.is (c, n tin eo,'te ig iti t7-, 0 U q:u-Core bores laboratory analysis Petrographic Examination Modulus of Elasticity and Poisson's Ratio Density, Absorption, and Voids* Compressive Strength, Splitting Tensile Strength, and Direct Tensile Strength 0 Accelerated Creep test Accelerated Alkali Silica Reaction (ASR) test Chemistry and contamination test Scanning Electron Microscope (SEM) examination of micro-crackingProgress Energy 49 OPERATIONAL EXPERIENCE (OE), Progress Energy 50

St a n' Generator, Re ace e 3e brinro , o/161edfrom, the Indus rMation, by--------------------

Architect Engineer and Constructor Type of Containment and design pressure o# of Buttresses SConcrete design strength requirement SDimensions Internal containment diameter and wall height Containment cylinder wall and dome thickness Tendons. details (# vertical, # horizontal, # dome, strand diameter)Liner thickness.,.Progress Energy ear Geeao Re laenn --GR OE~W~: Reinforcement details* Whether concrete opening was made* Was hydro-excavation used* And if so, equipment operating parameters

• Detensioning details° # by cutting# by relaxation

1. of tendons removed/detensioned beyond the SGR opening IMa Flm Progress Energy Worley Parsons 1976 dome delamination investigation and repair.(as Gilbert I Commonwealth)

• Structural Preservation Systems (SPS)0 Largest Concrete Repair Contractor in the US, 2nd largest Concrete Contractor (of any type) in the US Defects, Damage, and Deterioration Performs > 4,000 repair projects per year 3,.000 employees in 27 offices Nationwide, and London, Dubai &Singapore Wiss, Janney, Elstner, Inc (WJE)Structural engineering and materials science firm specializing in failure investigations and problem solving Specialist in structural condition assessments and design of repairs and retro-fits for reinforced and post tension concrete structures Conducted original CR3 Structural Integrity Test (SIT)450 employees in 20 offices nationwide Thin Progress Energy 53 o Compression

-tension interaction failure occurred N Contributing Effects 4 Radial tension due to pre-stressing Thermal effects-Tendon alignment

,.-,NT,,,L.Y DISCOVERED Stress concentrations

-"JA E Shrinkage SEE Combined with biaxial 0*5 , E °GE compressive.

stresses and lower than normal(2) direct 0 °.l tensile strength of concrete ISO (1)Cause information taken from 1976 Final Report prepared by Gilbert / Commonwealth' (2)Lower than normal (or typical), but above design requirements Progress Energy Tendons detensioned (18)* Delaminated surface was N removed --Lower level cracks grouted with epoxy New reinforcement placed I./_t* New cap poured and cured CU e 44 5 ,W C U T " RA , -. T Tendons partially re- -L M'W EDEFFON tensioned (18) 0*Progress Energy 55 DESIGN BASIS ANALYSISProgress Energy 56

'igh Basis,............." Reinforced Post-Tensioned Concrete Structure" Live and Dead Loads" Wind (110mph @ 30' increasing to 179 mph @ 166'10")" Tornado Wind (300 mph)Tornado pressure (external pressure of 3 psig)Tornado Missiles (35' utility pole or 1 ton, car @ 150 mph)~ Seismic (OBE -0.05 and SSE -0.10)Temperature Loads 0 Accident Pressure (55 psig)cAccidental Containment Spray Actuation Press (- 6.0 psig).. Progress Energy 57

-, Mý-FE 3-- A I A,-~ AN]~I.L H.180 degree Symmetric model Symmetry plane @ 150 degrees midway Between Buttress 3 & 4 / 1 & 6 a 1/2 Opening, 1/2 Damage & 11/2 Hatch Modeled Explicitly o Concrete Model' Brick elements for all components Dome and Base modeled independently Simplified ring beam and buttress geometry Constraint equations used to join dome and ring girder for meshing efficiency Constraint equation used to model sloped surfaces of the hatch A Think Rept Progress Energy 58 Liner Model* Shell mesh with variable thickness* Shared nodes with containment inner surface'Tendon Modeling Hoop tendons modeled explicitly for release and re-tensioning Vertical Tendons modeled explicitly for release and re-tensioning Dome tendons. modeled independently with forces ported to global modelProgress Energy 59

,C... jlý --rdtý'e.. .,eometry, Based n. Gil be-id A' s, h-s"Orawings, I 0, -.2 A/IL'N N~S I-ST I-. 'I>.2..........

O'T z4 DETAIL ,T,, IS.VA50..F-'A.I.7 11450-V j V A-'--I- -A ~Progress Energy 60

'en tryl B on- Prsc D--- -5~W tt7~L~ 04fl Sf14~ I j5 1 43fSkS& 35.5.-fr r.r. I ~ I A Progress Energy 61 D. om FAMoel i ELEMENTS NOV 6 2009 17:48:48 Gravity Loading Progress Energy 62 Rihg: GI'Me Model-,*63 SE~U~Nt~-

43 FEAN sh B"' 4 n-g leome ry eýCore u Idi-ti "s- Defined.H'"' -Te'hdo"'nLoca on II W TYPICAL SECTION TH-RU WALL & DUNE 64 or inmGonty-Btrse

.4 PrPmgress Energy 65 uIpme "b-h M del nt-H-a Progress Energy 66 ELEMENTS HAT NUM NOV 10 2009 07:44:56 CR3 FEA Model SProgress Energy 67 ons are preloaded to a prescribed load magnitude.

The application of the tendon loads is achieved in the analysis using initial strain input An empirical formula has been developed to account for the loss of load as the distance from the anchor point increases:

Where: P0 m a Ok* s P-P 0 e-(ma + ks)= preload magnitude= friction coefficient

= inflection angle (0.16)= wobble coefficient (0.0003)= distance from anchor point Tendon preloads ePO-dome SPo-horizontal SPO-vertical used in analysis:= 1635 Kips (1,215,000 lb. 40 years)= 1635 Kips (1,252,000 lb. 40 years)= 1635 Kips (1,149,000 lb. 40 years)Progress Energy 68 00a Ord'a 0 .* ei 41'Y -X 7;I-w 69 SProgress Energy FIAI Moel" -e ica an Hoop T'AN~1 Progress Energy 70

..'FEA Model.ý V. ýahd H T'e ica oop en d n S, rts& Progress Energy 71 FEAW ***" o e * *'-~~~ ~ e, H. 4'h nes4. --p o 44 4- 44 4 44 -- .4< 4., 4 444 4 4 S4444444444 ELEMENTS , I NOV' 8 2009 15: 12: 13 A... ...... ...................

..............

.. ..................

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..------ AV.. ..... .ip I-I .. ...............

.......jProgress Energy 72 Zop-te on-Forces:in.

I- ~ELEMENT SOLUTION STEP=1 SUB =1 TIME=1 SMIST (NOAVG) ->.TOP 4-DMX =1.169 SMN =598638 SMX =. 120E+07[2.N- ---------.AN ,::-NOV 8 2009 15:29:39--732037 665337 798736 932135.107E+07.120E+07 Progress Energy 73 h--d-A`4 e naiys.s, Existing Design Cases for Comparison Gravity (.95 G)° Internal Dead Load (200 psf)Tendons (1635 kips / tendon)I Include losses° Internal Pressure (55.0 psi)Wind Pressure (0.568 psi)Seismic Accident Thermal lanned Analysis Steps Dead Load + Tendons Remove Hoop + Vertical Tendons in SGR Opening Remove SGR Opening Delamination(l)

Remove Additional Hoop &Vertical Tendons Replace the SGR Plug(2)Repair(2)Re-tension Tendons SAVE Path Dependent Model for Starting point to Run 5 Controlling Design cases SProgress Energy (1)Analysis will consider timing of delamination and specific concrete properties (2) Sequence of replacing SGR concrete plug and repair may be adjusted 74 Ks 71IN -.k-St, pnt ro ing ad', eps Restart the Re-tensioned Model and solve the following Controlling Load Steps 1.5 Internal Pressure + Accident Thermal 1.25 Wind + 1.25 Pressure + Accident Thermal 1.25 Earthquake

+ 1.25 Pressure + Accident Thermal" 2.0 Wind + Pressure + Accident Thermal 0 SSE Earthquake

+ Pressure + Accident Thermal Run Comparison to original building elastic design results.Progress Energy 75 AWý-Y ire i m-in a GAA, ý ý "", ý FEA R Ults to'""f s re en s,ý.-:-qh!qtp ýn..f OSi So..........................................

.......NDE Measurements (figure not to scale)Calculated Gap Status behind Delamination Calculated Displacements NearContact Sliding-Sticking.797454.708848.620242-.531636-.44303-.354424-.265819-.177212-.088606 SProgress tnergy 76 REPAIR APPROACH&,Progress Energy 77 Incorporates and is compatible with Root Cause Analysis findings Restores applicable design basis margins Incorporates Extended Life Long Term Surveillance and/or Maintenance Requirements License Renewal Constructability

~Progress Energy 78 i'ai Aftdr`ýn`

tv, ons, ered Use-as-Is

-Rejected Anchorage Only -Rejected Cementitious Grout -Rejected Epoxy Resin -Rejected Delamination Removal and Replacement

-Selected S.Progress Energy 79

-bimp W of fied'Overvie ngineering

& Repair Work Flow rca a ive .SUbjec.16

'-CA I a'hd D8A PesvltsýMPR Tendon Calculations MPR 3D.Finite Element Analysis Failure Modes Analysis Update Failure Modes Analysis Update Progress Energy 80 Pott R pak`ý Tes-tin"S --b'-- ct to RCA Results enfati"-;7 U Ve*Approach

-ILRT and System Pressure Test*ASME Section XI IWE for the liner and IWL for the concrete Concrete exterior will be visually examined prior to pressurization and following de-pressurization Evaluating other additional instrumentation based on the final repair that is implemented, and as driven by: Root cause analysis NDE will be required for restored liner plate ,* Progress Energy 8* !

it4, all(enoia.

ra. ti er P.td -ohs Prompt Notification of Regulator

& Industry Engagement of Critical Industry Organizations NEI Energy Institute (NEI)Including Nuclear Safety Information Advisory Council (NSIAC)Institute for Nuclear Power Operations (INPO)Electric Power Research Institute (EPRI)Continued Transparency with Regulator Special Inspection Team (SIT)Region and NRR/RES technical discussions Periodic Updates with U.S. Licensees Progress Energy 82

-m ar .u_ e n s rt4~Questions 83