ML20080N589

Rev 0 to Drywell Coating Evaluation, Technical Data Rept

ML20080N589
Person / Time
Site:	Oyster Creek
Issue date:	12/21/1983
From:	Frederick A GENERAL PUBLIC UTILITIES CORP.
To:
Shared Package
ML20080N569	List: ML20080N566 ML20080N589
References
TASK-06-01, TASK-6-1, TASK-RR TDR-503, TDR-503-R, TDR-503-R00, NUDOCS 8402220293
Download: ML20080N589 (35)

Text

{{#Wiki_filter:_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _. _ Nuclear TECHNICAL DATA REPORT TITLE: OYSTER CREEK HUCLEAR GENERATING STATION DRYWELL C0ATING EVALUATION h l 8402220293 040210 PDR ADOCK 05000219 P PDR 1

TDR NO. 503 REVISION NO, O g I BUDGET TECHNICAL DATA REPORT ACTIVITY NO. 315302 PAGE 1 OF 34 PROJECT: UYSTER GREEK NUCLEAR DEPARTMENT /SECTION E&D/MEFA GENERATING STATION f i RELEASE DATE 'l MI O REVISION DATE l l DOCUMENT TITLE: ( DRYWELL C0ATING EVALUATION ORIGINATOR SIGNATURE DATE APPROVAL (S) SIGNATURE DATE s s A. J. Frederick [I. [dd.d /A/4//J R.T.DeMuth M /8 [// d // /14 $3 F.S.Giacobbe a ccN-f /4/a/M G.E.VonNieda M t'r\\ /2-//MO APPROVAL FOR EXTEgNJL DISJRIBUTION DATE D.K.Croneberger b N/Zl/83 ~ Docs this TDR include recommendatioa(s)? Oyes O No if yes, TFWR/TR # A00951 [ e DISTRIBUTION ABSTRACT: STATEMENT OF PROBLal NRC directive to GPU to inspect and repair (if necessary) the drywell coating at Oyster Creek Nuclear Generating Station per Section 4 21.1 of "SEP Integrated Assessuent" - docket No. 50-219

SUMMARY

t The Carbo Zine 11 drywell coating was inspected at the 23-foot and 44-foot elevations. The " benchmark" was established at the 44-foot elevation by performing visual, adhesion.and coating thickness measureuents on two selected regions and the verification assescrent was performed at the 23-foot elevation. The test results were identical at both elevations. CONCLUSIONS 1. The drywell coating is in satisfact'ory condition. The min./ max. dry film thickness (DFT) range of 2-1/4 to 9 mils in the undamaged coating region, which results in a calculated average DFT range of 3.9 to 5 4 mils complies with the recommended DFT range of 3 to 5 mils for Carbo Zine 11. 2. The observed regions of coating damage are small in size, typically being smaller than one square foot in area and the damage is exclusively the result of mechuical removal by power tool operation. The coating thickness at the perimeter of the coating damage region is typically 1/2 mil and it is fully adhering to the substrate. RECOMMENDATIONS Coating repair is not required during this outage. Coating inspection at all drywell elevations and local coating repair should be scheduled for the next outage.

TDK 503 Rev. O Page 2 of 34 TABLE OF CONTENTS e 1 6

1.0 INTRODUCTION

6 2.0 METHODS 10 3.0 RESULTS 15

4.0 CONCLUSION

S 16 5.0 RECOMMENDATIONS 16 6.0 TABLES 23 7.0 FIGURES 33 8.0 ATTACHMENT 34 TOTAL EFFECTIVE PAGES i

t TDR 503 Rev. O s Page 3 of 34 ) EXECUTIVE

SUMMARY

During the'1960's, zwhen the construction of the Oyster Creek Nuclear ~ GeneratLon station occurred, Jersey Central Power & Light Company (JCP&L) contracted to have the liner of the " Mark I" design drywell coated with untopcoated Carbo Zinc 11, which is an inorganic zine primer. In 1983, the originally applied drywell coating was visually inspected, the coating adhesion was qualitatively assessed by comparison to i Carbo Zine 11 coated steel panels and the coating dry film thickness was L measured with a Type 1 (magnetic pull-off) gage. Limited regions of the The drywell coating were inspected at the 44 foot and 23 foot elerations. coating comparative benchmark data was obtained on tha 44 foot elevation by applying the above mentioned coating test criteria (visual, coating adheeton,' coating thickness) to three observed generic coating regions identif ted as undamaged coating " Area 1," damaged coating " Area II," . coating overspray " grainy texture." The benchmark data was verification tested at the'23 foot elevation. The 44 foot and 23 foot elevations were analyzed because of their accessibility. The qualification of the 44 and 23 foot elevation data as typical of the present condition of the Carbo Zinc 11 coating on the balance of the drywell results from comparison of the " normal operation" dry heat envLronment of the drywell which has ranged from approximately 135*F to 300*F f rom the bottom of the drywell to the top of the drywell in comparison ~ ' to the dry heat resistance of Carbo Zinc 11 which is 750*F continuous service and 800*F non-continuous service, f i L u...

a n TDR 503 Rev. O Page 4 of 34 2%(1 l e The drywell was observed to contain many small coating damaged regions - 8v The

rfye which are typically less than one (1) square foot in surf ace area.

_-Q t '. ?Ijg$ coating in these identified regions was mechanically removed by power tool

s. y

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ojerations and touched up with a white color foreign, unidentified paint Q M. g.. system which is providing no corrosion protection to the exposed steel which Y h. p ' t v,;

• .%', sp. 4 Om The Carbo Zine 11 coating at the gd ig.

typically exhibits superficial corrosion. j.yFi. perimeter of the coating removed regions exhibits no " undercutting" (i.e., ,y .fy.;i" 2 -[M good adhesion to the substrate), but the measured coating thickness of 1/7 a(...% /".$ mil is not within the coating manufacturer's recommended thickness of L-9: s 3 to 5 mils dry film thickness (DFT). The coating thickness of the undamaged coating which is immediately adjacent to the perimeter of the coating removed regions achieves the recommended coating thickn,ess within five (5) inches from the perimeter of the damaged regions. J The judgment evaluation of the Carbo Zinc 11 coating damaged regions which are painted with an unidentified white paint is that these regions do not pose an immediate concern with regard to " normal operation" or a "LOCA" event because of the following two factors: 1) lack of film build, which precludes tne possibility of delamination in the form of sheets of paint (sheeting); 2) the total area of the observed coating dvaaged regions is less than 3% of the observed portion of the drywell. These two factors minimize the concern for pump choking by delaminated white paint. my J

\\ TDR 503 Rev. O Page 5 of 34 The undamaged coating contains regions of " coating overspray" which is an expected generic characteristic which does not compromise the corrosion protection service designed into the coating. The undamaged coating has a measured min / max DFT range of 2-1/4 mils to 9 mils DFT with an average calculated DFT range of 4 to 5-1/2 mils, which complies with the coating manufacturer's recommended 3 to 5 mils coating DFT range. The undamaged coating exhibits no environmentally caused deterioration as evidenced by the absence of corrosion product deposits and/or color staining associated with the formation of small volumes of zine corrosion by products. l l 1 The recommendations consist of: 1) no coating repair during this outage; 2) during the next outage, the drywell coating should be visually l checked, abraston tested, and measured at all the drywell elevations prior to commencing local repair of the identified generic region of mechanically damaged coating.

TDR 503 Rev. O Page 6 of 34

1.0 INTRODUCTION

1.1 Purpose y ?" The purpose of this report is to: 1) assess the condition of the Oyster Creek Nuclear Generating Station (OCNGS) drywell coating which is Carbo Zinc 11; 2) to determine if coating repair is necessary; 3) assess if local coating repair is feasible. l.2 Bac!: ground The OCNGS drywell of " Hark I" design (see Fig.1) was coated prior to 1969 with untopcoated Carbo Zine 11, an inorganic zine primer. jg The zine primed steel drywell is constructed of steel plates which -7i were masked at the plate edges, shop coated with Carbo Zine 11, field welded at the site to form the dry well pressure boundary and touched up in the field with Caro Zine 11 as required to provide full surface corrosion protection. 2.0 METIl0DS )4 2.1 Introductica The Carbo Zine 11 drywell coating was inspected at the 23 foot and 44 foot elevations. Benchmark coating data was obtained at the 44 __m aW-foot elevation via inspection of two selected regions of the coating. This benchmark data was then vert fied by examinations ~ performed at the 23 foot elevation. k 3 .R .r-1 n

TDR 503 Rev. O Page 7 of 34 .~ 1 e The 44 foot and.23 foot elevations were analyzed because of their I accessibility. The qualification of the 44 foot and 23 foot eleva-tion data as typical of the present condition of the Carbo Zine 11 1 - coating on the balance of the drywell results f rom comparison of the~ " normal operation" dry heat environment of the drywell which has ~ ranged from approximately 135'F to 300*F from the bottom of the drywell to. the-top of the drywell in comparison to the dry heat resistance of Carbo Zinc 11 which is 750*F cor.tinuous service and 800*F non-continuous service. The drywell inspsetion was restricted to wall inspections at the .23 foot and 44 foot drywell elevations. Two regions were inspected at each elevation for a total of four (4) inspected regions. The two c(2) sectors at each elevation can be characterized as two adjacent 45*. sectors, each located to one side of the zero degree reference ~ mark in Figures 2 and 3 which show the drywell plan views below elevation-37'-3" and between elevations. 37'-3" and 66'-0". The coating inspection consisted of: a)- Visual inspection b) Coating adhes{cu - Qualitative assessment c) Quantitative measurement of the coating dry film thickness (DFT) m c ,h s %--~-

l 3 IDR 503 Rev. O Page 8 of 34 2.2 Inspection Equipment a) National Bureau of Standards (NBS) " Certified Coating Thickness Calibration Standards non magnetic coating on steel with range including 1. 53, 3.35, 5.4 and 8.0 mil thickness standards. KTi-Tator Inc., model description SRM/1362. b) Type 1 gage, "E1cometer Inspector Thickness" (equipped with zero set). KTA-rator Inc., model description 111/1EZ, range O to 25 m1is. c) Carbo Zine 11 coated 2 inch x 5 inch carbon steel panels coated to be a three (3) mils DFT. 2.3 Visual Inspection The coating was categorized into three generic regions: a) Area I - Typical undamaged coating region; see figure 4 b) Area II - Typical damaged coating region; see Figure 5. c) Gralny texture - Typical " coating overspray" region.

n-b E .m F y fDR 503 y Rev 0 7 Page 9 of 34 .e 2.4 Coating Adhesion - Qualitative assessment. K W The coating adhesion at each of the three (3) above defined E k generic regions was qualitatively assessed by light force stroking of the coating with the serrated edge of a coin and visually E observing that the coating did not peel or flake but merely b assumed a burnished appearance. The sace procedure was performed L on the Carbo Zine 11 coated steel panels and the resulting burnished appearance was compared to the appearance of each ( burnished region of the drywell coating. n t k r 2.5 Quantitative Measurement of Coating DFf dl -F IFE The coattng DFT was measured with a Type 1 (magnetic pull-off) I F gage with a DFT range of 0 to 25 mils. The gage calibration was checked immediately before and rechecked immediately after the [ ' h7 .j d E drywell inspection by means of NBS calibration standard which lrs r F }.jjy ] [ spanned the drywell coating DPr (i.e., 1. 53, 3.3 5, 5.4, 8.0 mil t }.,3, standa rds). ..o g .f ~ ; Steel Structures Painting Council Specification SSPC-PA2 {g,, <$$ 4> g. " Measurement of Dry Paint Thickness with Magnetic Gages" was '% n. -: L utilized because the DFT spot check sampling procedure invoked in "Q [-[.(

f. c%-4 P

a" m the specification assures a statistically significant spot check L sampling of the coating DFT in an undamaged coated region sized to [ F 100 square feet of surface area. M

TDR 503 Rev. O Page 10 of 34 To determine the undamaged coating DFT the spot check DFT measurement criterion of SSPC-PA2 was invoked on " Area I" whose surface area of 28 square feet (a fraction of the 100 square foot specification defined surface area) assured a conservative determination of undamaged coating DFT; see Figure 6 for the spot check measurement map of " Area I". The undamaged coating " benchmark" DFT determined on " Area I" was verified in the undamaged coating portion of " Area II" whose surface area is only 8 square feet; see Figure 7 for the spot check n?.asurement map of " Aree II". In additton, within " Area II" the coating DFT at the perimeters of three (3) selected representative regions of mechanically damaged coating (identified as regions A, B, C) was 100% inspected wf.th the Type 1 gage as well as the coating DFT in the immediately adjacent undamaged coating regions. An undamaged conting DFT verification was perfer.ned at the 23 f oot elevation at random wall locations to determine that the " bench-mark" data is representative of the drywell coating. 3.0 RESULTS 3.1 Results 3.1.1 The results of the calibration of the Type i gage which were made immediately before and immediately af ter drywell' inspection are tabulated in Table 1. ( ) _ = _ _

w TDR 503 Rev. O Page 11 of 34 3.1.2 The results of the spot check dry film thickness (DFT) measurements for the undamaged coating and the calculated average DFT for Areas I and II are tabulated in Tables 2 and 3. 3.1.3 The coating DFT measurements taken at the perimeter of and near selected damaged coating reglons within Area II are tabulated in Table 4. 3.2 Discussion 3.2.1 Visual inspection The visual inspection of the regions of undamaged coating at the 23 foot and 44 foot elevations showed that the Carbo Zine 11 drywell coating did not exhibit deterioration resulting from environmental corrosion, as evidenced by the absence of corrosion products and/or white color staining which would indicate the formation of zine corrosion by products. The drywell coating contained many small size regions of damaged coating (typically smaller than one (1) square foot) which were traccable exclusively to mechanical removal by powsr tool operation. The total area of the observed coating damaged aress is less then three (3) Tne percent of the observed portion of the drywell. 1

TDR 503 Rev. O Page 12 of 34 coating damaged regions were observed to be superficially rusted inspite of the local touch-up application of a white color unidentified coating system which is providing no corrosion protection. Note the white paint annular and circular regions associated with the coating damaged regions shown in Figures 4, 5 and 8 which were observed at the 44 foot and 23 foot elevations, respectively. The observed " grainy texture" appearance coated regions, i which could be indicative of either " dry spray" (coating defect) or "overspraf" (acceptable coating f eature), are regions of coating overspray; this was concluded from acceptable coating adhesion and DFT measurements (see peragraph 3.2.2 below). 3.2.2 Coating adhesion - Qualitativa assessment l l The coating adhesion was qualitatively assessed by the procedure previously described in paragraph 2.4. l The coating adhesion was 100% inspected in Areas I and II with the perimeter of each coating damaged region in Area II also receiving 100% inspection. In addition, the " grainy texture" regions observed at the 44 foot elevation were 100% inspected to obtain the " benchmark" coating adhesion datum for the three generic coating regions. .t 1 I

y lj TDR 503 ' g r a Rev. 0 Page 13 of 34 fW W.kg I f . c..s.. r

• The coating adhesion verification assessment was repeated R

p '} 4.. at random wall locations at the 23 foot elevation. a,4) " 6, 4;; % 1 %' y,. = r r;p.;,) bO-N4.- The " benchmark" and ~ verification assessment" coating [ adhesion tests showed that the coating has full substrate . U,p adhesten because the drywell coating did not peel or flake, L but only assumed the same burnished appearance of the __ - '% p1 { $2.Y Carbo Zine 11 coated panels. 3.. s,.,,. ;, .N & ls *' l,f-w 3.2.3 Quantitative Measurement of Coating DFT m I The description of the coating DFT measurement procedure [ and the tabulated results are contained in paragraphs 2.5 i 1 and 3.0 respectively. _ N ISEEmer E [ ..-s.- ' F.: Calibration of the " Type 1" gage was performed irnediately 4 '>},, i.

l. ' ~

before and af ter drywell coating measurements to establish r Y' ' ". H. hf validity of the coating DFT measurements. Table 1 shows f.-*: 8., m. .m. I that within the coating manufacturer's recommended DFT . M;Y. %y: g "' " {'b W ':

~

c range of 3 to 5 mils t. hat the gage reading reproducibility ( was within 1/2 mil and that the 1/2 mil DFT gage reproducibility limit applied to the entire standard range of 1-1/2 to 8 mils as well. P Table 2 shows that the undamaged coating DFT benchmark is 2-1/4 mils min. to 9 mils max. with the average.DFT of t b 5.4 mils. Table 3 shows that the coating min / max DFT c g measurements are 2-1/4 mils and 7 mils respectively for the 2 a 3--

1 TDR 503 Rev. O Page 14 of 34 undamaged coating portion of Area II with the average DFI of 3.9 mils. The benchmark undamaged coating average DFT of 3.9 to 5.4 mils is in compliance with the coating manuf acturer's coating DFT recommendation. The " spot test" maximum measurements of 7 to 9 mils DFT are thinner than the ASTM coating application guideline's recommended maximum spot test measurement of 9.5 mils for a 5.0 mil specified coating DFT (see Table V) thereby, demonstrating that the 7 to 9 mils max spot test readings are in compliance with the rerommended coating DFT range of 3 to 5 mils. The measured minimum DFT spot check measurement of 2-1/4 mils is less than the ASTM recommended spot test minimum of 3.-2 mils for the measured DFT of 4.0 mils but this is not a concern because Carbo Zine 11 has successfully passed DBA simulation tests in the specified coating DFT range of 1.8 i to 6.0 mils. l Table 3 shows that the measured coating DFT was only 1/2 mil at the perimeter of the coating damaged regions within Area II and that the measured coating DFT in the immediately adjacent good coating regions (as determined by l the visual criterion) complies with the coating 1 manufacturer's recommendation. ( l l 1 I-

TDR 503 Rev. O Page 15 of 34 The coating DFT verificatinn assessment performed at the 23 foot elevation showed that the benchnark DFT data obtained at the 44 foot elevation was also applicable to the 23 foot elevation. 1

4.0 CONCLUSION

S It has been shown by the 44 foot " benchmark" and 23 foot elevation " verification assessment" that the untopcoated Carbo Zine 11 drywell coating has not suffered environmental deterioration. Numerous regions of coating damage exist, they are typically smaller than one (1) square foot in surface area and the damage was caused exclusively by mechanical removal of the coating by power tool operations. The coating adhesion of the undamaged coating regions and the coating adhesion at the perimeter of mechanically removed coating regions is good, and there is no coating " undercutting" at the perimeter of the coating damaged regions. I The coating thickness in the undamaged coating portion of the drywell complies with the coating manufacturer's recommendation of I l 3 to 5 mils DFT, but the coating DFT at the perimeter of the coating damaged regions, which is of the order of 1/2 mil, does not comply with the coating manuf acturer's recommended coating thickness range. i i

TDR 503 Rev. O Page 16 of 34 The coating damaged regions were oversprayed with an unidentified white 1 color paint system which is not providing corrosion pectaction to these regions. The unidentified white color paint appears to be a " finish" cost; if so, corrosion protection benefit would not be expected from its application. 5.0 RECOMMENDATIONS Coating repair is not required during this outage. The unidentified white paint used to coat the mechanically damaged Carbo Zine 11 coating may be left on even though it is probably not a DBA qualified paint system because the typical coating damaged area is small (less than 1 sq. f t.), the total af fected drywell wall area is less than three (3) percent and the application of the white paint has no practical film build, thereby minimizing the concern of paint deiamination by sheeting and possible choking of pumps. Local coating repair is recommended during the next outage. During the next outage the drywell coating shod 1d be visually inspected, adhesion l tested, and DFT measured at all the drywell elevations prior to local l repair with Carbo Zine 11 of the report identified generic region of mechanically damaged coating. 6.0 TABLES I. Calibration Check Of Gage used To Measure Coating Dry Film Thickness (DFT). t

TDR 503 Rev. O l Fage 17 of 34 II. " Area I" - Spot Check Dryfilm Thickness (DFT) Measurements and l Calculated Average DFT of Undamaged Coating. III. " Area II" - Spot Check Dry Film Thickness (DFT) Measurements and Calculated Average DFT of Undamaged Coating Region. IV. " Area II" - Coating DFT Measurements at the Ferimeter of and Near Damaged Coating Regions. V. ASTM Recommended Allowable Deviations From Specifled Dry Film Thickness of Coating System. l l l l l I i

TDR 503 dev. O Page 18 of 34 TABLE I Calibration Check of Cage Used To Measure Coating Dry Film Thickness (DFT) Calibration Standard Calibration Coatiag Measured Coating Thickness of Calibration Standard Standard Thickness Identification mils mils 1306 1.53 Before: 1.8 1.6 1.4 1.4 1.4 1.4

1.4 After

1.4 1.4

1.3 Average

Before: 1.5 mils /After: 1.4 mils % Deviation: 7 1310 3.35 Before: 3.1 3.0 3.0

3.0 After

3.0 3.4 3.2

3.3 Average

Before: 3.03 mils /After: 3.23 mils % Deviation: 6 1311

5.4 Before

5.0 5.0

5. 0 4.8

5.0 After

5.2 5.0

4.8 Average

Before: 4.96 mils /After 5 mils % Deviation: 0.8 1312 8 Before: 8.0 8.0

8.0 After

7.0, 7.0, 7.0, 7.2, 7.0, 7.2, 7.8, 7.2, 7.5, 7.5 l Average: Before: 8.0 mils /After: 7.2 mils % Deviation: 10 f J-

TDR 503 l Rev. O ( Page 19 of 34 TABLE II " Area I" - Spot Check Dry Film Thickness (DFT) Measurements and Calculated Average DFT of Undamcged Coating. Location Dry Film Thickness (DFT) Identification mils Com:nent 1 6 2 9 3 6 4 4 5 3 ~ 6 4-1/2 j 7 3-1/ 4, 4 8 3, 5 9 6, 7 10 7 11 2-1/4 Measured on Weld Location 12 2-3/4 13 8, 9 14 4, 4 15 4-1/2 l 16 9 17 8 l i Average DFT 5.4 mils ( i

---

_-__---~__

TDR 503 Kev. O Page 20 of 34 TABLE III Area II - Spot Check Dry Film Thickness (DFT) Measurements and Calculated Average DFT of Undamaged Coating Region. Location Dry Film Thickness (DFT) Identification mils Comments l 1 2-1/4 Measured on weld location 2 2-1/2 3 2-1/2 4 4-1/2 5 6 6 7 7 2-1/2 Aveage DFT 3.9 mils i 1 {

TDR 503 Rev. O Page 21 of 34 TABLE IV " Area II" - Coating DFT Measurements at the Perimeter of and Near Damaged Coating Regions. Coating DFT (mils) at distance from Region perimeter of damaged coating region Identification 0" 1" 2" 3" 4" 5" 3-1/ 2 A 1/2 2 2-1/2 l 3 l C 1/2 a, O 1 l \\ l O l Region A Region C Legend: Arrow denotes surface direction in which coating DFT measurements were made. The zero (0) denotes the perimeter location measurement. O i

TDR 503 Rev. O Page 22 of 34 TABLE V ASTM Recommended Allowable Deviations from Specified Dry Film Thickness of Coating sp arwegi Tad-sp Tesi um== "**""f A'ge Fdm Spot Test Maaimum g ads Om) ads (pm) mits (pm) mits (pm) 14 (15) 0.8 (20) 2.0 (50) 3.0 05) 2A 00) 1.6 (40) 4.0 (100) 54 (125) 3A G5) 1.4 (60) 6A (150) 7.0 (175) 4.0 (100) 3.2 (80) 1 4 (175) 8.5 (243) 5 4 (125) 4.0 (100) 54 (200) 9.5 (238). 6.0 (150) 4.8 l120) 9.0 (225) 10.5 (263) 7A (175) 5.6 (140) 10.0 (250) II.5 (258) BA (200) 6.4 (160) 11.0 (175) 12.5 (313) 80A (250) 8.0 (200) 13 0 (325) 14.5 (363) 15.0 (375) 12.0 (300) 20.0 (500) 23.0 (575) 20.0 (500) 16.0 (400) 26.0 (650) 29.0 (725) 25.0 (625) 20.0 (500) EO (500) 36.0 (900) M O (750) 24.0 (600) 38.0 (950) 42.0 (1050) 35.0 (875) 28A 000) 44.0 (1100) 48.0 (6200) 40.0 (1000) 324 (800) 50.0 (1250) 55A(1375) 50.0 (1250) 40.0 (1000) 62A (1550) 68.0 (1700) 60.0 (1500) 48.0 (1200) 14.0 (1850) 81.0 (2025) Ref. American Society for Testing and Materials (ASTM) " Manual of Coating Work for Light-Water Nuclear Power Plant Primary Containment and Other Safety-Related Facilities," 1979 edition. i

o TDR 503 Rev. O Page 23 of 34 7.0 FIGURES l. Elevation of Drywell 2. Drywell Plan - Below Elevation 37'-3" 3. Drywell Plan - Elevation 66'-0" t.o Elevation 37'-3" 4. Drywell Coating - Generic Region: Undamaged Coating, Area I. 5. Drywell Coating - Generic Region: Damaged Coating, Area II. 6. Map of Area I - DFT Measurement Locations 7. Map of Area II - DFT Measurement Locations. 8. Drywell Coating - Elevation: 23 foot. 9. Drywell Coating - Elevation: 23 foot.

10. Drywell Coating - Elevation: 23 foot.

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rDa 503 Rev. O Page 33 of 34 l l 8.0 ATTACHMENT 1. Product data / Application instruction sheet for Carbo Zine 11. e 1

TDR 503 g. product data sheet Rev. 0 r Page 34 of 34 ] C at*b olllie.l CARB0 ZINC 11 d e ,I 350 HANLEY INDUSTRIAL COURT

• ST LOUIS. MO. 63144
• 314-644-1000

,4 i W= SELECTION DATA phenolics, vinyls, acrylics, silicones, chlorinated rubbers or U GENERIC TYPE: Self curing, inorganic zinc primer. The ^ coating consists of a basic zinc silicate complex. Base and NOTE: Under certain conditions a mist coat or tie coat zinc filler mixed prior to application. may be desirable to minimize topcoat bubbling. 7 L GENERAL PROPERTIES: An i, organic zine base coat that COMPATIBILITY WITH OTHER COATINGS: Apply di-Q protects steel galvanically, eliminating sub-film corrosion. rectly over substrate, CARBO WELD @ 11 or other inor-Has ou' standing application properties. Can be applied at ganic zines as recommended. 3 the recommended thickness in one coat. SPECIFICATION DATA

=

RECOMMENDED USES: CARBO ZINC 11 (the first self-curing inorganic zinc primer) is used as a single coat protec-THEORETtCAL SOLIDS CONTENT OF MIXED MATE- __.i tion of steel structures in weathering exposure and as a base RI AL: coat for organic and inorganic topcoats in more severe ser-By Weight ) Y vices. Excellent for the interiors and exteriors of storage CARBO ZINC 11 79% i2% tanks containing fuels and organic solvents. Has many uses Percent Zinc in Dry Film 86% as a maintenance primer, with or without topcoats, depend-ing on exposure. Used widely in chemical plants, paper g-mills, refineries and coaMal or salt atmospheres including g 3.0 mils (75 microns) e-offshore structures. CARBO ZlNC 11 meets the stringent ^ performance requirements of the American National Stan-THEORETICAL COVERAGE PER MIXED GALLON:' dards Institute, ANSI N101.2-1972 and ANSI N5.12-1974. 1000 mil scf. ft. (24.5 sq. m/t at 25 microns) 4, 333 sq. ft. at 3 mils (8.2 sq. m/l at 75 microns) { NOT RECOMMENDED FOR: Immersion service or in. direct exposure to acids or alkalies without a suitable top- ' NOTE: Material losses during mixing and application wili A coat. vary and must be taken into consideration when estimating job requirements. CHEMICAL RESISTANCE GUIDE: Heavy Fumes or Outside SHELF LIFE: Base: 12 months minimum Ligot Splash Weathering or Zinc Filler: 24 months minimum Exposure

• Immersion and Spillage Mild Fumes g

Acids NR Very Good Excellent COLORS: Gray or green only. t 9 Alkalies NR Very Good Excellent Solvents Excellent Excellent Excellent GLOSS. Matte finish. E Salt Excellent Excellent Excellent Water Excellent Excellent Excellent ORDERING INFORMATION 9 m O

• Certain exposures may require topcoats for maximum Prices may be obtained from Carboline sales representative g

m ice. or main office. g 3 TEMPERATURE RESISTANCE: (non-immersion) APPROXIMATE SHIPPING WElGHT: g Continuous: 750*F (399 C) Us 5,s g Non-continuous: 800*F (427 C) CARBO ZINC 11 23 lbs. (10.4 kg) 113 lbs. (51.3 kg) M FLEXIBILITY: Fair Good WEATHERING: Excellent CARBOLINE _s Thinner #26 9 lbs. (4.1 kg) 42 lbs. (19.1 kg) _3 ABRASION RESISTANCE: Excellent. Abrcsion resistance CARBOLINE 3 increases with age. Thinner #21 8 lbs. (3.6 kg) 36 lbs. (16.3 kg) M =Ei r.g 7 SUBSTRATES: Apply over properly prepared steel, or FLASH POINT: (Pensky-Martens Closed Cun) C other surfaces as recommended. CARBO ZINC 11 Base 56 F (13 C) CARBOLINE Thinner =26 104 F (40*C) 3 TOPCOAT REQUIRED: May be topcoated with epoxies, CARBOLINE Thinner #21 53 F (12*C) Aug. 83 Replaces Feb. 81 To tfie t est of our knowledge the technical data contained herein are true and accurate at the date of issuance ar'd aro subiect to change without M preor notice. User must contact CarDOHne to verify correctness before specifying or ordering. No guarantee of accuracy is given or implied. We A control. We assume no responsibdity for cover age. Cerformance or injuries resulting g guarantee our products to conform 'o Carboline Quality from use. Liability, if any, is inmited to replacement of products. PMCes and cost data if snown. are subject to change

• sthout prior notice. NO j

WARPANTY OR GUARANTEE OF ANY KIND 15 MADE BY THF SELLER. E x PRE SS OR ! MPLi E D, ST ATUTOPY, BY = OTHER OPE R ATION OR LAW, OR OTHE RWISL. INCLUDING ME RCH AN T ABILITY AN D FITNESS F OR A f' ARTiCUL AR PU RPOSE. C

APPLICATION INSTRUCTIONS These instructions are not Intended to show product recommendations for specific serv 6ce. Tney are issued as an and in detarmin6ne correct surface pieparation, mixine instructions, and application procedura. It is assumed that the proper peoduct recommendations nave been made. These Instations should be followed closely to ontain the maximum service from tne materiais. SURFACE PREPARATION: Remove any oil or grease from surf ace as wn. If spraying stops for more than 15 minutes, blow the mate- = l to be coated with clean rags soaked in CARBOLINE Thinner s2 or rial from hose back into pot. ~ Mi. & Gun Fluid Tip Air Cap toivol in accorda3ce with SSPC-SP 182. r Steet: For immusion service, dry abrasive blast to a White Metal Binks #18 or sS2 66 63PB Ffhish in accordance with SSPC SP $42 to a degree of cleanliness Devilbiss P-MBC or JGA E 704 in accordance with NACE #1 to obtain a 13 mit (25-75 microns) ,pprax,,o70 g,o, blast profile. For non immersion service, dry abresive blast to a Airtees: Use a 3/B" minimum 1.0 matwial hose. Hold gun approxi-Commer*:lai Finish in -ccordance with SSPC-SP 6-82 to a degree of mately 18 20 inches from the surface and at a right angle to the sur. cleanliness in accordance with NACE #3 to obtain a 13 m4 '25-75 face. Keep material under mild agitation during application, micron) blast profile For steel tank linings, welds secuJ be con. tirtuous. Remove weld splatter, slag, fumes and oxidas caused from Mfr. & Gun Pump

• welding. Welds must Le ground to a smooth rounded radius with no Devilbiss JGB407 QF A-519 sharp edges.

Greco 205 591 President 30:1 or Bulldog 30:1 MIXING: Power mix base, then combine and mix in the following S:nks Model 700 Mercury SC proportions: ' Teflon packings are recommended and are available from pump 1 Oal. Kit 6 Gal. Kit manufacturer. CARBO ZINC 11 Case 1 Gal. 5 Gal. Use a.019.025" tip with 1500-2000 psi. (partisily filled) (partially filleo) BRUSH: For areas lass than one square foot. For touch-up only, Zinc Filler 14.8 lb. unit 73 lb. unit "U '" "8' Mix as soplied. Sift Enc filler slowly ;nto base with continuous agi-tation. Mix until free of lumps. Pour mixture through a 30 mesh DRYING TIMES: screen. When less than full kit is used, mix by we:ght 10 parts Base: Before topcoating or placing 22 parts Zinc Fil!sr. Thin up to 12% by volume with CARBOLINE Temperature with over 50% RH into service untoptonted* Thinner #21 in cool weather (below 60*F [16*C]). For warmer or windy conditions, use CARBOLINE Thinner #26. ,0,F ,1, ' ,p C) 24 rs NOTE: Use of thinners other than those supplied or approved by 60*F (16*C) 16 hours / Carboline may adversely affect product performance and void 75*F (24*C) 12 hours product warranty, whether express or implied. 80*F (27'C) 8 hours 100*F (38'C) 6 hours POT LIFE: Eight hours at 75'F-(24*C) and less at high4r tempera-tures. Pot life ends when coating becomes too visco9s to use. Water

• Represents minimum times, if allowed to weather, excessive salting contaminction will reduce pot life and in extreme cases cause gel-should be removed.

ladon. VENTILATION Si SAFETY: When " sed as a tank lining or in en-APPLICATION TEMPERATURES: closed r ress, thorough air circulatior, must be used during and af ter replication until the coating is cured.The ventilation system should Matwiel Surfu r e cape f mven ng s nt vapw concentmbon frwn Normal 4045*F (4-3 :*C) 40110*F (4 43*C) Minimum 0*F (-18'C) 0*F (-18'C) Maximum 130*F (54*C) 200*F (93*C) us3d by all application personnel. Where flammable solvents exist, Ambiant Humidity explosion-proof eighting equipment mu,t be used. Hypersensitive persons should wear clean protective clothing, gloves and/or protec-Normal 40-95'F (4 35'C) 4040% Minimum 0*F (-18'C) 30% tive cream on face, hands and all exposed areas. Maximum 130*F (54*C) 95% CLEAN UP: Use CARBOLINE Thinner s2 or xylol. Do not apply when the surf ace temperature is less than 5'F (2*C) STORAGE CONDITIONS: above the dew point. Temperature: 40-110*F (4 43*C) Humidity: 0-100% ~~ Special thinning and application te-hniques may be required above NOTE: a) To recoat CARBO ZlNC 11 - thin 50%. Apply over clear *, dry or below riormal conditions. CARBO ZINC 11. - SPRAY: Use sufficient air volume for correct operation of equip. ment. b) When CARBO ZINC 11 is used for immersion suvice untop-coated where zinc pickup could be detrimental or when dry Use a 50% overlap with each pus of the gurr.On irregular surfaces, spray is evident and CARBO ZINC is to be topcoated, remove coat the edges first, making an extra pass !arer. loose zine after curing by rthbing with aluminum screen wire. NOTE: The following equipmer.t has been found suitat,le, however, c) For interior application or tank linings, if the relative humidity equivalent equipment may be substituted. is low, the curing time can be reduced by raising the relative Conventional: Use a 3/8" minimum t.D. material hose with a maxi-humidity by stearn or a water spray oa the coated surface after mum length of 50 feet. Hold gun approximately 1214 inches from allowing to dry for one hour at 75'F (24*C). the surface and at a right angle to the surface. noee u oernrmance,but shouH be removed before reusing. Use agitated pot with dual regulations. Keep pot at same elevation c' CAUTION: CONTAINS FLAMMA8LE SOLVENTS. KEEP AWAy FROM $PARKC / NO OPEN FLAMES. IN CONFINED AREAS WORKMEN MUST WEAR FRESH AIRLINE RESPIRATORS. HYPERSENSITIVE PERSONS SHOULD WEAR GLOVES OR USE PROTECTIVE CREAM ALL EL ANO INSTALLATIONS SHOULO BE MADE AND GROUNDED IN ACCORDANCE WITH THE NATIONAL ELECTRICAL CODE. IN A EXPLOSION HA2ARDS EXIST. WORKMEN SHOULD BE REOUIRED TO USE NONFERROUS TOOLS AND TO WEAR CONOUCTIVE A l NONSPARKING SHOES. CSPl3Oline sT. Louis, Mo. s3144 o 314-644-1000 350 HANLEY INDUSTRIAL COURT .u d -}}