ML063050192

2006/10/04-E-MAIL: (PD) Firebar-D Material (Part 2)

ML063050192
Person / Time
Site:	Oyster Creek
Issue date:	10/04/2006
From:	Exelon Corp
To:	Ashley D Office of Nuclear Reactor Regulation
References
%dam200611, %dam200612, TAC 8261
Download: ML063050192 (59)

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rlreDar-ii materiai t'age 1 or 1 D. Ashley -Firebar-D material From: <ahmed.ouaou

@exeloncorp.com>

To: <DJA1@nrc.gov>

Date: 10/04/2006 6:25:33 PM

Subject:

Firebar-D material CC: <fred.polaski@exeloncorp.com>, <donald.warfel@exeloncorp.com>;

<john.hufnagel@exeloncorp.com>

Donnie: Attached is part 2 of the GE report on Firebar-D.

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Creation Date From: Created By: Firebar-D material 10/04/2006 6:24:13 PM<ahmed.ouaou

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-7 TABLE 1 DRYWELL STEEL SPECIFICATION:

CHEMISTRY: (TYPICAL)ASIM: A-212-61T Gr B FIREBOX FINE GRAIN- NORMALIZED C -.23 Mn- 1.06 P -.010 S Si-.023 re-. Si STRENGT: (TYPICAL)TS-ILE YIELD ELONG-75,000 PSI-50,000 PSI-35%NOTE: MATERIAL WAS IMPACT TESTED TABLE 2. GPUN Sand and Firebar-D Leachate Analysis Analytical Parameters Na K Ca Hg Al NI Fe Cr mn Pb Nil 3 (N)Cl ,NO 3 So4?Q4 F TOC Organic Acids Total Sulfur B Conductivity pH Firebar-D*

Leachate 1 Hr. 60' C 777 784 176 1936-0.3'd 0.3 C 0.3~'0.3 c O.3 0.6 573 132 2850 N.D.14 1056 1120 50 Moist Sand Leachate Bay 11 Drain 24 Hra, Room Temp (u25s)25 25 30 30 10.5 5.0 0.5'1.5 10.5 4C25 N.D.N.D.39<5 Hoist Sand Leachate Bay 11 Drain 1 H r, 9 0' C (ujl,)25 20 25 10"'1.5 0.5 1.0 O0.5< 0,5 6.5 1.5 32 N.D.37 (5 moist Sand Leachate'Plug #1 (19C)1 Hr, 60" C 37 37 47 10 39' .33 82 4-.33 3.7< .33 45 e:17 28 N.D.N.D.*46.6 Dry Sand UAachate Plug 02 (15A)I Hr, 60' C (uglg)47 23 C 23 z23 2.3 C 2.3 8.4< 2.3< 2.3 c 2.3 93 6 79 N. D.N.D.N.D.588 8.46 7.43 7 58 7.,02 ,5.99 I Table 3. Test Data Irpreseod Relative to the Wter: or Leachate -GE Insulation Day *7 Leachate Scrapings Leechete WS6152-86 W3,06153-86 Moist Truos land Sand Core Leachate Sample 03 Loachato W5#6154-06 6 Moist Plus46 eand Core Sample Leoesbte WWS02S1-00 l14A Dry6 Drywel2 Sand Semple Pipe Leak Loechate Water Sample W505262-SS W5f6221-06 It A- Leached material Volume of Leoshato Co-S0 Ca-137 Gross Beta Gross Alpha Tritium p 1 (6)CaRL)(mC LA)(MCiI/L)(mCi IL)MCui/L)(mCi /L)..13.547 35 6.21-07.98-07 431-07 442-06 8.5 5.6 293 7. 1-07 9.31-07 430-07 9.9 260.5 549 431-07 i. 41-04 7.9 247.5.45 1.62-07 491li07 43$t07 ,441-05 7-.6 23.22.151.2 539 a49107 G453-07 7.1 339.5 97 1.61-OS 2..41-06 439-07 5. 5-06 6.5 3. SE-0S 1.78-03 8.01-03 9.6 Conduetivity Cumboslem) 540.C;Alkalinity am CeCO (milL)slierbonote Carbonate Nydrozide Total Total Organic Carbon (ae/L)Total Sulfur as 50 (CUSO IL)170,..41 I00.2300.110.1i.130.99.44.44.45..24.41 41 24.9.41 al 0.0 260.31.20 230.go. 660.Chloride Fluoride Nitrogen.

nitrate Nitrogen.

Nitrite Phosphate.

Ortho Sulfate Potassium Sodium HManesium Iron Calcium Boron Strontium Aluminum Lead Barium Arsenic (mi/L)(msN/L)(m0/IL)(CP/L)(mO/L)(IIIL)(maIL)(milL).(ma/L)(mS/L)(maiL)(maiL)CmelL)(mej/L)(mailL)34.60.23.0.5 5.0.66 40.1 96.46.36.53.40.02 5.5 o.80 0.041 ,0.02 0.042 0.096 0.035 22.680.240.0.6 0.1 0.13 C0.1 750.680.220.3.40.03 7.8 0.93 0.004 40.03 0.15 40.005 0.05 7.5 2.0.1 0.4 40.04 0Co. 1 7.4 12.8.3 1.7'C0.02 4.9 0.46 0.13 40.02-0.03 0.0037 40.03 1.4 0.4 0.1 40.05 40.02-0.1 1.4 7.4 3.5 0.71 0.14 1.7.0.074 0.02 cO 032 a0.03 40. 003 40.03 2.2 0.5 0.2 40.05 40.04 40.1 1.0 4.8 2.1.3 a0.02 3.5 40.03 0.076 0.16 40.03 4OO03 40.03 3.0 3.8 12.16.9.0 0.4 0.06 40. 04 40.1.14.3.5.7 0.27 1.5 0.24 ,0.014 40.02 0.1 0.0042 40.03 19.56.20.0.2 6.3 40.04 40.1 62.95.110.11.9.1 0.92 6.20-O. 12 40.3 40.03 40.3 Table 4.. Calculation of chars. Balances -GE (ion Concentrations in Hill)oquivalenta per Liter)Insulation say #7 Leachato ScrapinsO Leaehate WS#8132-66 vS#6153-16 Torus Sand gand Core Leachate Sample 03 Leachate eseos-4-SS We"6280-66 I -?#.Plust4 Sand Lioe a Drywall Core eampl. Sand Sample PIp* Leak Leachate N"824O1-00 lot -Bicarbonate Carbonate Chloride Fluoride Nitrate UltrLto Sulfate Boron as borate Arsenic as arsenate Sun ot Anions (no/L)3.4 0.16 0.65 0.026 0.36 0.047 2.0 0-.082 0.0014 6., 2.2 0.33 6.8 0.032 0.007 0.009 1i 0.086 0.0020 25.0.80 0.056 0.0053 0.029 0.15 0.042 1.2 0.46 0.48 Leaebato VS#6202-O6 1% A-H 0.16 0.25 60.021 0.0002 Water Sample 1S 36221-85 0.023 0.014 0.0053 0.011 5.2 0.42 0.56 0.011 0.45 1.3-.0.085 6.0 0.020 0.0060 0.52 0.021 0.20 0.02;0.53 0.77 I.Potassium as 1+Sodium am No+agnoesium as Me++Iron as Vo++Calcium as Ca++ftrontsum em $r4+Aluminum as Lead an ?tb*BIrium as Sa++Sum of Cations (nmeL)1.2 1.6 4.4 17 0.6 0.25 0.27 0.30 0.0000 0.0021 0.31 0...36 0.14 0.24 0.003 0.0001 0.10 0.15 0.058 0.005 0.065 0.0005 0.12 0.087 0.11 0.17 0.0017 0.018 0.077 0.043 0.47 0.0007 0.075 0.001 0.0001 2.5 4.8 0.801 0.33 0.32 0.o006 0.0004 0.0014 0.0014 7.S .27 1.2 0.49 0.51 0.68 6.9 Table S. Test Data gnpressed eleative to the Sample iWeiabt-GE Insulation say #7 Torus Send Band Core 8orapings Sample 03 I~.o Flusf4 Sand Core Sample IA NU63061-00 Area 6 land Semple, it At-85 UrW6202- 68 WS56152-56 W586153-86 WVU6154-85 5504260186 moisture Content LZAC A3LI CNARACTZRISTZCS:

Alkalisity 0s CaCO (mg/8)Bicsrbonate Carbonate lydrozide Total T1tal Organic Carbon (ag/8)Total Sulfur as 50 1mso4 /5)Dry 12.62ý 1.12 2. O6 Dry Cbloride Fluoride*Utzogon.

xitrate sitrooen.

Uitrito Phosphate.

Ortho Sulfate Potassium Sodium Magnesium Iron Calcium Boron Strontium Aluminum Load Barium Arsenic (mg/8)(mgSl)(agsO I)(4/6 (38/I8)(as/a (ag/a)(ma/a)(ma/a)(mgai)4.5 0.31'0.03 4.7 0.13 3.1 0.01 0.013 0.13 0.017 o0.003 2.5 1.2 0.35 1.4-0.0008 0.14 0.023 0. 0011-0. 0006 0.0011 0.0025 0.00092 0.71'0.05 5.8 0.90 33.11.0.027 0.0044 0.00538'0.005 33.30.3.6 0.13 40.002 0.35 0.041 0.0042'0.002 0.0067'0.00022 0.0022 0.0053 00052 0.015 0.0042 0.00021 0.00084%0.0001'0.002 0.016 0.025 0.017 0.0036'0.00004 0.01 0.00037 0.00027'0.00004'0.00006 0.00001'0.00005 i.0063 0'.0021 0.00026'0.0002'0.0001 40.0003 0.0036 0.019 0.0031 0.0016 0.00036 0.0044 0.00019 0.00005'0.0003-0.00006-0.0000 1'0.00006 0.093 140.002 40.002 0.003 0.06'0,.003.10.086 0.008 40.004 0.006" 0.014 0.0076 0.0018 0.00071'0.003'0.O0002 40.0004 0.0036 0.017 0.0071 0.0046'0.00007 0.012 o0.00011 0. 00027 0.00057'0.00011'0.00001 40.00011 0.026-0.003 40.003 0.026 0.034 0.046 0.026 0.00011 0.00017 40.0001-0. 0003 0.04 0.008S 0.0029 0.016 0.00077 0.0043 0.00069 O. 00 00'40.00008 0.00029 0.00001'0.0009 Table 6. DRYWELL BAY 11 DRAIN WATER (GPUN)BAY 11 DRAIN WATER 12/1/86 (ppm)BAY 11 DRAIN WATER 12/6/86 (ppm)Sodium Potassium Calcium Magnesium Aluminum Nickel Iron Chromium Manganese, Lead3 (N)Chloride Nitrate Sulfate Phosphate Fluoride TOC Organic Acid Total Sulfur as SO 4 Conductivity (uS/cm)pH* Alkalinity

(<145 142 7.5 30 0.33 0.01 0.01 0.01.0.01 0.06 3.6 a 96.85 6.4 11 0.02< 0.02 0.74< 0.02 0.02< 0.02 25 6 60 ND 32.5 8.7 153 5< 1 51< 0.1 23.3 153 1100 814 8.90 8.70 260* All Alkalinity Present As HCO 3 Table 7. OYSTER CREEK DEPOSIT SAMPLES (1) (GPUN)144036 1"037 1"4038 Deposit -Scrapings from Bay No. 7 between torus and dryvell (Oyster Creek No. WS-6153-86)

Deposit -Scrapings from in back of No. 11 expansion joint found in Bay No. 11 between torus and dryvell (0. C. No. WS-6280-86)

Deposit -Scrapings from under downcomer found in bay No. 11 between torus and dryvell (Oyster Creek No. US-6281-86)

Aluminum (A1 2 0 3)Boron (1203)Calcium (Ca0)Chromium (Cr 2 0 3)Copper (CuO), Iron (Fe 2 0 3)Lead (PbO)magnesium (MgO)Manganese (OnO)Nickel (NiO)Potassium (K 2 0)Sodium (Na20)Total Yields 1"036 0.091 0.35 0.21 0.006 0.013 78.51 0.55 0.27 0.33 0.013 1.58 1.15 83.072 1"4037 0.232 0.35 2.07 00.004 0.038 69.93 0.51 2.12 0.25 0.025 0.12 0.11 75.76Z 1"038 0.381 0.32 1.39 0.045 0,088 65.35 8.72 4.78 0.48 0.044 0.16 0.19 81.961* The remainder of the deposit was verified by EDAX to be silicon which is not soluble in hydrochloric acid. The chloride detected by EDAX is due to solvent.(1) Samples taken between 12/1/86 and 12/6/86.

Table 8. EDAX Elemental Analysis of "Deposit" from Day 7-- GE Element Na Si S Cl K Ca Mn Fe Br Pb Detected Range (Wt.%)0.00 0.00 0.00 0.40 0.76 0.00 0.00 41.37 0.00 0.00 2.09 0.66 11.65 6.74 21.24 1.30 0.93 96.82 4.38 34.39 Average (Wt.%)0.61 0.15 4.15 2.11 8.00 0.20 ..0.25 73.49 0.72 10.27 Table 9. UT Characterization of Damage by Bay Number BayN. UT Characterization 1 Minor damage 3 Minor damage 5 Pitting/inclusion 7 Minor damage 9 Pitting/inclusions 11 Wastage 13 Wastage 15 Pitting/helutiont 17 Wastage 19 Wastage Table10. Core Sample Locations Sample No.1 2 3 4 5 6 7 Bay/Location 19C 1l5A TM~Wastage Pit/Incl 17D Wastage 19A Wastage 1l1A Wastage llA-H Minor damage 19A Minor damage Elevation 11'-3 5/8" 11'-5 1/4" 11'-3 3/4" 11'-3 3/8" 11'-3" 12'-2 3/4" 12'-i" Samples Obtained Core, sand, bacteriological*

Core sand,'bacteriological Core,-sand Core, sand bacteriological Core, sand Core, sand bacteriological Core,, sand Organization GPUN GPUN GE GE GPUN-Archive GE GPUN-Archivei Baceriological analysis performed at York College TABLE 11. ENERGY DISPERSION ANALYSES FROM THE SURFACE OF THE PLUG SAIMLES (GPUN)ELEMENTAL COMPOSIT-ION MAJOR MINOR SAMPLE 15A 19C Fe Fe Pb Cl TRACE AISi,Ca,Mn AI,SI,Mn* MAJOR MINOR TRACE> 10 Wt.%> I wt. %< wt. %ELEMENTS BELOW ATOMIC NUMBER OF 11 ARE NOT DETECTABLE.

TABLE 12.ENERGY DISPERSION ANALYSIS OF THE SAND SAMPLE FROM THE 15A SAMPLE LOCATION (GPUN)ELEMENTAL COMPOSITION

• MAJOR MINOR TRACE* MAJOR MINOR Si AI Fe Cl,KPb,Ti>. 10 wt. z lwt.z TRACE 1 wt. %

TABLE 13.ENERGY DISPERSION ANALYSIS OF THE FLAKE DEPOSIT FROM THE 19C PLUG SAMPLE (GPUN)ELEMENTAL COMPOSITION 0 MAJOR MINOR TRACE Fe Si,.Cl pH DETERMINED BY LITMUS PAPER 4 SMAJOR MINOR*~10 Wt. %*~1 wt. %1 lwt. %a TRACE Table 14. Oyster Creek Core Plug Corrosion Surfaces -GE Element Conc. Range Core Plug 17D Core Plug 19A Core Plug IIA-H Al Si S Cl K Ca Mn Fe Pb Br Cu Ti Cr m 0.17-0.20 3.71-4.92'1.36-1.93 92.73-94.60 0.00-0.35 0.04-0.07 0.08-0.09 0.34-1.25 0.00-0.03 1.87-2.48 96.07-97.45 0.00-0.16 0..00-0.04 1 .42-2.45 9.83-11.31 4.39,5.37 0..00-0.16 0.14-0.68 0.00-0.11 21.72-28.87 52.61-519.77 1.17-1.37 0.03-0.07 0.06-0.16 Table 15. Oyster Creek Core Plug Cross-Section Analysis -,GE Typical Concentration

ýWt.Z)Element Plug 17D*Plug 19A Plug IlA-H Al Si S Cl K Ca FM Fe Pb Br Cu Ti Cr 0.08 0.23 3.45 0.02"0.02 1.63 94.40 0.08 0.30 16.40 2.57 0.14 1.24 98.37 0.01 0.66 79.56 0.16 0.27 0.05 0.02 0.04 0.09 0.07 0.18 Xerge of (2) values Table 16. Oyster Creek Plug Crust Samples (Wt.Z) -GE Elemental Conc. Range Plug 17D Plug 19A Al Si S cl K Ca Mn Fe Pb B .r Cu TI 0.00-0.63 0.02-0.38 0.00-0.09 0.00-0.11 1.54-10.92 88.32-98.26 0.00-0.23 0. 00-J. 03 3.81-30.34

0. 07-1.72 0.33-1.93 0.00-0.65 0.00-0.66 0.00-1.50 64.69-93.36 0.00-0.52 0.00-2.98 Table 17. Elements.

Present in Seawater 9.Anions, ppm, Cations, ppm Cl so 4 Br F I Inorg. C Org. C N(NO 3)N(NO 2)N(NH 3)Org. N P(PO 4)Org. P 18980 2652*65 1.4 0.05 28 1.2-3.0 O0O01-0.7 0.001-0.05 0.005-0.05 0.03-0.2 0.001-0.10 0-0.016 Na Mg Ca K Sr si0 2 B H3 BO3 Si Al Rb Li Ba As Fe Zn Cu*10561 1272.-400'380 13 0.01-7.0 4.6 26 0.02-4.0 0.6-1.5 0.2 0.1 0.05 0.003-0.;024 0.002-0.02 0.005ý0.014 0.001-0.09 Table 18.Summary of Core Plug Thickness Measurements Pre-Removal Average Sample Thickness, in 19C 0.815 15A (0.490 min)1.17 17D 0.840 19A 0.830 11A 0.860 11A-H 1.17 19A 1.14 Post-Removal Average Thickness, in 0.825 1.17 0.860 0.847 0.885 1.19 center 1.18 center Coment a Wastage, thick corrosion product Inclusions, superficial corrosion Wastage, thick corrosion product Wastage, thick corrosion product Wastage -Archive specimen Above wastage, no significant corrosion Above wastage, no significant corrosion-1 TABLE 19.CORROSION RATES OF CARBON STEEL UNDER STATIC-AIR SATURATED CONDITIONS 1 2-1 5 WATER TYPE DISTILLED

+NAOH/HCL TEMP"C(OF)40(104)EXPOSURE PH PERIOD,DAYS 4.5-8 4.1-9.5 -CORROSION RATEMPY 23.8 22(72)16.6 PARTIAL DEMIN (0,I/3,6uS/cm) 52(125)'62 145 2.1 5.6 REF UHLIG/WHITMAN UHLIG/WHITMAN BRUSH BRUSH SPELLER SPELLER MERCER MERCER MERCER KHOMITCH KHOMITCH KHOMITCH NA DISTILLED TAP 40(104)60(140)25(77)40(104)60(140)40(104)50(122)60(140)25(77)45(113)45(113)45(113 25(77)50(122)5.4-6.5 5.4-7.0 5.4-8.0 7.2-7.7 7.2-7.7 7.2-7.7 100 100 100 12 14 90 90 90 35 53.5 54.0 61.7 1.4 2.9 6.6 CONDENSATE FEEDWATER CONDENSATE CONDENSATE SEAWATER SEAWATER SOIL MIX 7.5-11 365-1095 8 BREDEN 20 NOE 20 WAGNER 15 OBRECHT 3.5 HUDSON>6"%7>50 NACE 15(59) ^-7 1456"'I p UHLIG 7-ass I!Figure 1. Oyster Creek Mark I Containment 10.6 __- 2 l_ eo 44.PLAN VIEW ToRUS DR-I'WEL.Figure 2. Location of Bays in Oyster Creek Torus and Drywell.X=Sites of water on Torus floor.

Figure 3. Primary Containment Geometry of Oyster Creek SI FJSERGAftR P PO~tf A~'-A. AtA IL M-46")FIGURE, 4.PWTIAL C.ROES S~ECTIOW4OP DRYWELL t yI lI V."N IL it'-d'W %A"CbAW*L FIGURE 5.SECTION A-A A7 VgNT r4 S AWD, P 0 F S M ALL' -z LE S SFET~~ ~~U U i a V!ZiA A L FE'C CL K--- ------ --.. ...Z.V I--f P,13IT, Figure 6. Photo shows distribution anld type of sand particles.

Spectra shows basic elemental composition' (GPUN)

AJ, 0 a See, Fu" 06 4?, D+j s h.-a)WEACT49L V1566L 1-*Uft$O 1.,a0 ~f DILYW6LL 1L.Figure 7. Top of Reactor Vessel. Note location of bellows, insulation and concrete.

Figure 8. Close-up view of bellows and location of the two 2" drain lines.

I U ~a 4w.xg~PlLA14tE~L.5IW

.MKIS ~ .~ ~ui Figure 9.Location of UT measurements.

FIGURE 10. CROSS-SECTION VIEWS OF DRYWELL WALL CONDITIONS 0.0054, T°V PLUG 15A (PITTING)Ioox PLUG 19C (UNIFORM CORROSION)

FIGURE 11.PLUG 15A SCALE CHARACTERIZATION MAGNIFICATION

-30qx OXIDE SCALE DRYWEILAL.

ALLINE REPRESENTS ENERGY DISPERSION LINE PROFILE LOCATION.

(-FIGURE 12. OYSTER CREEK DRYWELL PLUS 2 (15A)LAEEL 5;ZC77V4 .--ILE Nm'- .I EPLUG OYSTER CREEK DRYWELL PLUS 2 I<--WALL ->.< ------- ---C-- -------CA L- -- -... .. .. -.- ---, ---." -...'-".: (~~~~~~~~~~~~.

....... ..- ..:.. ... ., .....i: ....... ....w.............

.. ..... .. .. .........,.. ...." ., '.,, ---.....". ...':.1. " ... .. .-* ..-. .";.d .

I- .-,--J

..-----------------------------

---

-----------

__ m ----------------------------------------

K-S f r- 2X Figure .13. Plug 15Aoutside surface of drywell.Uniform red brown corrosion product.

N4 E..1* : ..: _ t° .-* .1*'V Q.501, I.o'4 9 500X Figure 14.Plug AUAAluminide stringer at mid-vall.Plane parallel :to rolling direction.

501 V60. 1.t'I..0.C S.*5 seA..z 40 **Lee 9 4'. V..0 a 0 A 500X Figure 15. Plug I5AAluminide Stringer at mid-wall.Plane perpendicular to rolling direction.

X7 7 7 i I I I I I U U I I U U U U U U U U U U U U U U U U U U U S U U U U U p I U S U m I I I S S Plug #1 Fiizure 16.Plugl9C outer wall surface microplane is located PLUG# 19C E.,1 :-GEWER IAL , :EF)S IT~:..I.. ~s~E:TF~¶ Fi.Z ~E-------------------

I -------------

---

---

------------

o ----------------

40 V, FE ,,Vv~J.1 uI~C U N"41, C L-.I N'1. ,-.rW?* .'P IG I Figure 17. Typical elemental analysis of sample l9Ccorrosion product.

FIGURE .18, PLUG IgC SCALE CHARACTERIZATION PlAGNIFICATION

-56X SCALE ,DRY WELL WALL O.o?,'4.LINE REPRESENTS ENERGY DIISPERS ION LINE PROFILE LOCATION.

c Figup'e 19. OYSTER CREEK PLUG 1 (19C)I.- ..-.:-7 ---------

---

---

---* .----mvDRYEL.Lý.WALL OYSTER CR E EFK' P L UGS I EV" A il~L AN ",R;<~~~~~~ -" ..DE ... ..... ......................

-,. -:'....1,,.,-.-.- -..............

--.- ............

---.. --. ------------------------

"- -.- ., --.* " ' ' " :' ;": + : :-: +: ... " .:;! .,; : ' ': ": '- .-: " + ,Z ,,L -+- : , [ .: , ./A +. .'k ', ... , ;,a'..r t ...a .* .., : r -: ....+. , ...,- .., .. ..+ .." ; .;, ... + ., : ,: , +T .., , +,, ., , .-., ":.- L- ..." " -" "L"- +:""'I + ' ".. ." " " ...'+ " , .", ..'+ " ' .k., .,,*, "

FIGURE 20. PLUG l9C SCALE CHARACTERIZATION MAGNIFICATION

-580X SCALE DRYWELL WALL o I.S60("a LINE REPRESENTS DISPERSION LINE LOCATION.ENERGY PROFILE THE ARROW LOCATES A MANGANESE-SULFIDE INCLUSION WITHIN, TliE SCALE LAYER.

• 11 I.J.0 N I-'n a-A 0 g.S C*1 0 n S r I I 4 1 1 1, 0 U C II S n I, I qh I-'!0.0.1 w-I SEM No. , Fig.-Samplie .o. ore Ping Sa.v I;ro i 3:(I :-D)0 ACc Pan*

SEM No.1\IAyCr I, Fi.Sample I.O.0y 4 6~k ~ Pu 3 [f 11.~46~,/ /2 7t~ ___

rat. rqct r -I °L °. ..o * * *

• d o o L b t* 977 ,TP.Fig ICPl Mo ~ APE] Hag. -i._____ Bid ?lo mTz APQWag.~44

,f 1 s (-- ý; /I 36~L4Z PC17 m!a pig.. 370 P edO Kmg.;f fig.______

3Fo cfQ AprAPEI Mg.

SEM No.1.a A. a I Sea rita.9 &; W .It NJ I Fig., Sample ID fr-& C f CorroSO n 5r4 1 4c 4,~/ As 6 rr. cc eg -

SMNo. /3,3!r tA 1 e r.I 7.- -f Fig. .....sample I.D 6oe A4 /,I e F./I ! Ji lIp I Cb1 : Lg.______

APO H z ag .Fi._____F~APO-R fa 41A/

ýIee 6 L5._____ 5?ýPlO KIDAiIL, Hag 3 FLg .. I uI N A4! Haj-gj Fig.___ 19AQg.5 ZFg___ I a 4~C, im j.j/ R-R*P- v__C___ ____ __e SEM No.1 /33'r I "-y-~~~'fvh4_% , i o Fig.O Samplel D. Ca~re 6-V.n/ %l ('I,&

SEM No. /.33, A^ y reSd~f,~7 JE~A2d~meA cc--~Sample I.D. 65'r6 C ock ;re Phl iIANH)

(6('-¢ 67 m rAe'I I I'I'I'I'1 1'I'i'1'I'1'I.J.I'I'I¶11'I'iIP iris -i lC U PC 0 r% POm Fig._ Iu.Y -~4 r'f'i 7?rjl(A~ 4 a 71g. 3ui~nOrzOAI~'was.J2Z~

ro g.Fig.,~ 3 2 .59to nO AII a Fig.________

y~ iO E~AP~ ag..-/

ple_*1 40*F~~-'A A D izQ'C PD D... .i m l * .. .. .~a'~ e{v~'fZ~'

j~Q~4e %'L'r6 4'

, .0 FIGURE 35, CORROSION PRODUCTS OF IRON/STEEL WITHOUT CONTAMINANTS FEO.NH 2 0 OR FE(OH)2 3FE(OH)2 FE 3 0 4 'N 2 O FE 3 0 4.+2H 2 0+H 2;FE 2 0 3 ORk FE(OH)3 FE 9 FE(OH)2+1/2 H 2 0+1/40 2 i

• i i i ii ii (* HYDROUS FERROUS OXIDE* FERROUS HYDROXIDE° PH9.5 WHITE (PURE)* HYDROUS FERROUS FERRITE* MAGNETITE" PH 7.0* -BLACK-:* FE(OH)3 I" HYDROUS FERRIC:OXIDE* FERRIC HYDROXIDE P PH 7,0 ORANGE/BROWN REI-(RUST)* GREEN GREENISH/BLACK

• MAGNETIC" NON MAGNETIC SFE 2 0 3 HEMATITE.MAGNETIC YFE 2 03 200 150 ISO 0.6.2 9 0 2 3 4 S 6 seri@ 1: iro in Contact with magnetit, serie 2: no conuct vith imgnetite a. Corrosion rate of iron versus pH of solutions of FeC1 2 , at 200C (68°F)2W0 100 5o 0 6 4 2 0 0 1 2 3 4 serie 1: iron in contact With aMnetlte saris 2: no contat with mnLetit b. Corrosion rate of iron versus (Fe++) of solutions of FeCl 2 at 20C (68 0 F)Figure 36.Increase in instantaneous corrosion rate of ir n in solutions of FeCd 2 with and without magnetite.

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,, ..FIGURE 38.POSSIBLE CORROSION MECHANISM OF OYSTER CREEK DRYWELL CORE SAMPLES AREA WASTAGE FIBERGLASS BOTTOM CURB LEAD w 02, DEPLETED AREA WET SAND Fe > t. 2e-Fe 2+ + 2CY-, FeCI 2 FLOOR-1 02 RICH AREA 02+2H 2 0 + 4e -40H--OH, --oMOH HIGHER pH`DUE TO CONCRETE U m 02 4C o2: CO 2 CONCRETEC CONCRETE li; I "