ML20244E633

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Testing & Analysis of Unirradiated Heat Affected Zone Matl from San Onofre Nuclear Generating Station Unit 3, Final Rept
ML20244E633
Person / Time
Site: San Onofre 
Issue date: 05/31/1989
From: Garrabrandt J, Michelle Manahan, Talnagi J
Battelle Memorial Institute, COLUMBUS LABORATORIES, OHIO STATE UNIV., COLUMBUS, OH
To:
SOUTHERN CALIFORNIA EDISON CO.
Shared Package
ML13302A661 List:
References
NUDOCS 8906210027
Download: ML20244E633 (56)
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Text

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FINAL REPORT s on TESTING AND ANALYSIS OF UNIRRADIATED HEAT-AFFECTED ZONE (HAZ) MATERIAL FROM THE SAN ON0FRE NUCLEAR GENERATING STATION UNIT 3 (SONGS-3) to SOUTHERN CALIFORNIA EDISON COMPANY May 31, 1989 by M. P. Manahan and J. Garrabrandt BATTELLE 505 King Avenue l Columbus, Ohio 43201-2693 and J. Talnagi and H. Basha l THE OHIO STATE UNIVERSITY l 1298 Kinnear Road l Columbus Ohio 43212 l i

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) 7 1 4 = Battelle does not engage-in research for. advertising, sales promotion, or endorsement of. Southern' California . Edison interests including. raising' investment: capital or recommending investment decisions or other public-ity purposes, and this report shall not be reproduced-in whole or in part for such purposes. Because of the. experimental nature of'this. project,: Southern California Edison assumes sole responsibility' for any use of or. inability to use any information, results, process, or apparatus disclosed in this. report, Battelle assumes no liability for~the conse-quences of any use of any information, results, pro-cess, or apparatus or for the. accuracy, adequacy, or efficacy thereof. 1 1

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l TABLE OF CONTENTS- .j l-Page-1 l 1

1.0 INTRODUCTION

1-2.0 METALL0 GRAPHY AND' DIMENSIONAL VERIFICATION OFc BASELINE SPECIMENS...:..............'....'.....

3 l l 3.0 C.;ARPY TESTING AND ANALYSIS...................- 12= 3.1 Specimen Preparation and. Testing ..........1.-. 12 3.2 RT Analysis...............,... .-.t. -19 NDT .25-4.0

SUMMARY

3.,.

5.0 REFERENCES

26 .i Appendix A. Pre-Test Photographs of Charpy SpecimensiShowing. Notch Location in the Heat Affected Zone..::.l. A-1. Appendix B. Post-Test Photographs of Charpy Specimens: Showing Fracture Surfaces..................... B-1 1 1 l l' l' .i 1 l 1 -I i iii l

LIST OF FIGURES Page FIGURE 2-1. LOCATION OF-CHARPY V-NOTCH IMPACT S'PECIMENS WITHIN 'THE HEAT-AFFECTED-ZONE (HAZ) METAL.......... 4 FIGURE 2-2. RESULTS OF DIMENSIONAL VERIFICATION OF.CE' ARCHIVE UNIRRADIATED HAZ CHARPY SPECIMENS 5-FIGURE 2-3. CE-UNTESTED SPECIMEN 44E..... 1. 7 FIGURE 2-4. CE SPECIMEN 42U TESTED AT 80 F 8 FIGURE 2-5..CE SPECIMENS 471 AND 475 TESTED AT 120 F......... 9 1 FIGURE 2-6.' CE SPECIMEN'43K TESTED AT 160 F-10 FIGURE 3-1. CHARPY V-NOTCH' IMPACT ENERGY VERSUS TEST TEMPERATURE FOR THE UNIRRADIATED HAZ METAL SPECIMENS ~FOR SONGS-3. 15 FIGURE 3-2. CHARPY V-NOTCH LATERAL EXPANSION VERSUS TEST TEMPERATURE FOR THE UNIRRADIATED HAZ METAL SPECIMENS FOR SONGS-3 16 FIGURE 3-3. CHARPY V-NOTCH PERCENT SHEAR VERSUS TEST TEMPERATURE FOR THE UNIRRADIATED HAZ METAL SPECIMENS FOR' SONGS-3:.- 17 i FIGURE 3-4. COMPARISON OF BATTELLE AND CE HAZ CHARPY DATA 21 FIGURE 3-5. COMPARISON OF CE BASE, WELD, AND HAZ DATA 22 FIGURE 3-6. COMPARISON OF BATTELLE HAZ DATA WITH'CE BASE AND WELD DATA.......................... 23 j FIGURE 3-7. COMPARISON OF CE BASE, WELD,-AND HAZ~ DATA FOR l SONGS-2......................... 24 LIST OF TABLES 4 Page ] TABLE 2-1. CE IMPACT TEST RESULTS FOR HAZ METAL PLATE C-6802-1 AND BATTELLE POST-TEST EXAMINATION RESULTS 6 i TABLE 3-1. CALIBRATION DATA FOR THE HOT LABORATORY CHARPY IMPACT MACHINE USING AMMRC STANDARDIZED SPECIMENS... 13 TABLE 3-2. CHARPY V-NOTCH IMPACT RESULTS FOR UNIRRADIATED-HAZ METAL SPECIMENS FOR SONGS-3............ 18 TABLE 3-3.

SUMMARY

OF CHARPY IMPACT PROPERTIES FOR UNIRRADIATED HAZ MATERIALS FOR SONGS-2 AND SONGS-3......... 19 l

FINAL REPORT b TESTING AND ANALYSIS OF UNIRRADIATED HEAT-AFFECTED ZONE (HAZ) MATERIAL FROM THE SAN ONOFRE NUCLEAR GENERATING STATION UNIT 3 (SONGS-3) by M. P. Manahan and J. Garrabrandt Battelle and J. Talnagi and H. Basha The Ohio State University May 31, 1989 s

1.0 INTRODUCTION

The SONGS-3 surveillance program materials were fabricated The welds in the beltline region are Mil from SA 533-B, Class 1 steel. The baseline data was measured by Combus-B-4 submerged arc weldments. ) tion Engineering (CE) and the results were reported in Reference (1. The HAZ Charpy data reported in Reference (1) exhibited substantial As a result of this, Southern California Edison (SCE) asked scatter. Battelle to review the baseline heat-affected-zone (HAZ) data and pro-As stated in the Ref- ) vide recommendations concerning further testing. erence (2) letter, the CE data is believed to be invalid due to the high scatter for tests conducted above 40 F, and Battelle recommended that Based on review of the CE data additional testing and analysis be done. f by SCE and the Battelle recommendation, SCE decided to authorize 4 Battelle to examine the CE specimens. The HAZ Charpy specimens tested by CE plus three untested CE Metallographic analysis specimens were located and sent to Battelle.l dimensional verification was performed on several specimens and a ful These results are of the three untested CE specimens was performed. presented in Section 2.0 of this report.

q I ?2: Based on the results'.of Battelle's examination of the;CE' spec-imens.and data, SCE decided..to go forward withitesting a new set'of HAZL Charpy specimens. Thearchiveweldment(plateC-6802-1)'wasLsent'to ~ ' Battelle, and HAZ Charpy specimens were prepared 'and tested.: - These.:' data 3. are presented in.Section 3.0 of this" report.. The results are' summarized'

i in Section 4.0.

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et 3 2.0 METALL0 GRAPHY AND DIMENSIONAL VERIFICATION OF BASELINE SPECIMENS During construction of the 50NGS-3 pressure vessel, surveil-lance specimens were removed from several beltline plates for inclusion; in the irradiation program and for baseline data generation. HAZ metal specimens were removed from flat slabs cut parallel to both the plate inside diameter (ID) and outside diameter'(OD) surfaces at a depth of ~ one-quarter (1/4T) and three-quarter plate thickness. The axes' of.the specimens are parallel to the rolling direction. Figure 2-1 is an iso-metric drawing showing the Charpy specimen orientation and loc'ation within the beltline plate HAZ metal. Further details are provided in Reference (3). A full dimensional verification of the three CE HAZ Charpy specimens was performed to test the hypothesis that the anomalous data may have been caused by improper specimen machining.. As shown in Fig-' ure 2-2, the specimens are within the ASTM E23 dimensional tolerances. With regard to specimen machining,.there still-remains the question of residual stress. Residual' stress measurements were yet performed as part of this work. The next step was to determine whether the notches'in the CE specimens were locatet within the HAZ regi_on. The untested specimens, as well as the specimens tested at 40 F (2' specimens), 80 F (2 speci-mens), 120 F (2 specimens), 160 F (2 specimens), and'200.F (2 speci-mens), were etched in the vicinity of the' notch. In all the work reported herein, Vilella's etchant was used. Since several of these specimens were tested near the upper shelf, it was necessary to mount, grind, and polish the surfaces to obtain useful micrographs. The results of this investigation are provided.in Table 2-1 and Figures 2-3 through 2-6. As shown in Figure 2-3, the notch for untested specimen 44E was machined at the weld-HAZ interface. The notches for the cther two untested specimens (412, 41B) were machined within the.HAZ region. How-ever, tihe notch for specimen 41B was machined close to the base-HAZ interface on one side and close to the weld-HAZ interface on the other

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c l l 5 l l 4 A C B 3 y Rh y /( N~- A D / 2 w ,a v W l FjL y 1 P j l J L i l SPECID A B C D F N-R W X 41B 2.1644 1.0848 45 - 0' .3946.3945 .0006 .0787(SI) .0105 .3945 , All Fam a; .0787(S2) 1 o 44E 2.1643 1.0819 44 - 30' .3944 .0011 .0794(SI) .0105 .3943 Less Then ~ .0785(S2) o o i 412 2.1646 1.0827 44 - 55' .3946.3945 .0009 .0790(SI) .0105 l.3N2-.3941 l 0-5' Errn .0785(S2) Specimen Dimension, inches FIGURE 2-2. RESULTS OF DIMENSIONAL VERIFICATION OF CE ARCHIVE UNIRRADIATED HAZ CHARPY SPECIMENS

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11' side. Sequential grinding after testing would be necessary to verify that the crack plane remained within the HAZ. As indicated in Table 2-1,'most of the data tested'at or above 80 F are in_ question. It is interesting to note that all of the speci-mens tested at 120 F or above come from the 3/4T position. As described later, about 60 percent of the 3/4T Charpy blanks machined at Battelle were-rejected because it was impossible to notch the specimens in such a way that the crack would remain in the HAZ region during testing.. This-is due to the weld orientation in the sample block relative to the plate section from which the specimens were machined.- If the portion of the weld sample block which CE used to prepare the 3/4T specimens was simi-lar to the portion used at Battelle, then this could explain the anoma-lous data obtained using the 3/4T specimens. Based on the above cursory. investigation,- Battelle recommended that Charpy specimens should be prepared and tested. It' is important to note that the observations reported herein are sufficient to; raise doubts concerning the validity of the CE data. Extensive additional: work would be needed to show conclusively that the CE data are invalid. For example, sequential grinding, polishing,: and etching would be necessary to identify those specimens where the crack left the HAZ region. Residual stress measurement'would be needed on the three-untested samples to completely validate the CE machining operation.

+ 112 3.0 CHARPY TESTING AND ANALYSIS .l As discussed.above,1 sufficient 1guestionswere raised concern- " ing the CE HAZ Ch'arpy. data reported in Reference '(1) to. warrant additi-onal testing. The' archive weld block wasisent to Battelle'and 1/4T and 3/4T specimens were machin~ed in accordance with' ASTM E23'and these specimens were fabricated consistent with the orientation prescribed.in Reference (1). 3.1 Specimen Preparation and Testing Fifteen specimen blanks were prepared from the 1/4T position; and fifteen from the 3/4T. Prior to notchingr the specimens were etched. on all four surfaces to reveal'the HAZ. At)that stage i.t,was;necessary ] to reject nine 3/4T specimens (60' percent)' because it was not possible ~ to position the notch such that the crack plane would be contained within the HAZ. In order to ensure that'. an adequate ' number of specimens- ] were available for testing, three additional 1/4T' specimens were pre ' pared. Full dimensional verification was performed and all but two-i specimens were within specification. These two specimens were r'eground: ] and renotched and then passed the dimensional ~ check' Photographs'of the; i specimens showing the notch location in the HAZ.are provided in Appendix A. Charpy impact tests were conducted using.'a 240 ft-lb'Riehle impact machine in accordance with. ASTM specifications. The 240 ft-lb range was used for all tests. Velocity of the hammer.at. impact wasL 16.87 ft/sec. Calibration of the machine was verified as-specified.in ' ASTM E23-82, and proof tested using a set ofistandard Charpyl specimens. obtained from the U.S. Army Materials and Mechanics ResearcN Center (AMMRC) of Watertown, Massachusetts. Results of the. proof tests are listed in Table 3-1. d Testing of the specimens followed the ASTM E23-82 standard-method for notched bar impact testing of metallic materials. ASTM ) procedures for specimen temperature control were utilized. The. low ] 1 l J i

.f .13 TABLE 3-1. CALIBRATION DATA FOR THE HOT LAB 0kATORY CHARPY IMPACT MACHINE USING AMMRC STANDARDIZED SPECIMENS F,nergy for AMMRC-Average of Standar(d) Variation Between BCL Average Energy)a 5 tests And AMMRC Standard Energy Group (ft-lb) (ft-lb Actual Allowed Low Energy 12.5 11.8 0.7 ft-lb 11.0 ft-lb_- High Energy 75.8 72.7 4.3 percent 15.0 percent (a) Established by U.S. Army Materials and Mechanics Research Center, temperature bath consisted of a refrigeration unit containing methyl alcohol. It was necessary to add liquid nitrogen to a methyl-alcohol bath to reach the -120 F test temperature. The alcohol-was agitated to minimize temperature variation in the bath. The liquid level of the bath was maintained so that a minimum of 1 inch of liquid over the spec-imens was maintained. Each Charpy specimen was held at temperature.for at least the minimum time (11.8 F for at least 5 minutes) recommended by ASTM E23-82. Tests above room temperature were conducted in a simi-lar manner using a heated oil bath. Specimens were removed from the bath and impacted in less than 5 seconds..A few specimens were impacted within 6.5 seconds. A specimen with a thermocouple attached was.trans-ferred from the bath to the Charpy machine support and the temperature continuously recorded. The temperature variation at.6.5 seconds was found to be negligible in the vicinity of the V-notch. The energy required to break each specimen was recorded and plotted as a function l of test temperature. J Lateral expansion was determined from measurements made with a lateral expansion gage. The amount of lateral expansion as a function of test temperature was also plotted. Fracture appearance (percent shear) of the Charpy specimens was estimated from photographs of the I fracture surface using a planimeter. J l J

.i 14 The test temperatures chosen were identical to those used by. !j CE so that the data could be directly compared. The one exception to this is that the 250 F test temperature was not run since the upper f shelf was already well defined.. The remaining specimens'were used to l provide the data needed to establish the RTNOT in accordance with the ASME code. The Charpy impact data were prepared and reported in' accord-ance with ASTM E185-82. The Charpy data were fit by means of a statistical analysis-methodology originally developed by Battelle. The code is entitled Statistical Analysis Methodology for Mechanics of Fracture (SAM 'McFRAC)(4,5) The approach is based on a two-parameter Weibull distri-bution, and has been tested against other methods for analyzing Ch'arpy data. The method was shown to be superior to manual (french curve) or hyperbolic tangent fitting because it is not constrained to a given functional form, it reduces human bias, and it allows the calculation of I temperature-dependent variances and 95-percent confidence intervals. The less accurate hyperbolic tangent fit was also plotted for comparison. The results of tests conducted for the HAZ specimens are listed in Table 3-2. The total impact energy is the amount'of energy absorbed by the specimen tested at the indicated temperature. Lateral j expansion is a measure of the plastic deformation produced durin'g_ testing. Lateral expansion is determined by the largest change of I specimen thickness in the plane of the notch which usually occurs at the back of the specimen. Fracture appearance is a visual estimate of the l amount of shear (ductile type of fracture) appearing on the specimen fracture surface. ) Plots of the impact properties (impact energy, lateral expan-sion, and fracture appearance) versus test temperature are provided in Figures 3-1 through 3-3. These figures show the impact properties as a function of temperature. Appendix.B contains the fracture surfaces j l of the Charpy specimens. A summary of the test indices is given in Table 3-3..These data show scatter consistent with that observed indus-1 try wide. The energy, lateral expansion, and fracture appearance data form consistent, temperature-dependent trend curves. The Battelle i l i

r _w r A w e T a A ms n D m = T = w u sw T a + 0 E3 A 0 R - US T 3 TG AN RO A ES P D MR EO ) TF 0 F = + TS Y8 0 SN R EE P E 2 e TM e V I R r SC R g SP UE AU 4, e RS E HC d VL C 0 + +. ( A YT GE D 0 E RH R E P 1 R NZ ZA EA U l l A T CD T H A

+

AE A PI T MA R I I A E l D O P l A + 3D C CR TR Y OI B HN + E - U TG V T E I Yl N!R i PT 0 T R U5 g AR 0 S iO l 5 9 CF E 1 E S T 1 G 3 N E R O 0 U G 0 S 2 I F 0 0 0 O 0 0 6 2 B 4 2 1 1 .S8g >I

E c Gw m AT u Ne o-A m Un i n o e Mo r wu On n m, Ca + A 0 E 0 RU 3 T A3 8 R - A ES E PG TV MN EO AR )

1. S 0

P TR U t DC SO 0 EF e T 2 e SN S Ys r UE c SM 4 e EC RI PlA d VE R P ( NS 0 O AA 0 E SA IL T H A NT 1 R AE CD U PM X T EZ A N A LH A 3O R RD EE O 4 8 TT I AA + TN W LI D A liA I E CR N P TR T OI UX NN U V E 0 T E 0 S Yi l SL PT R 1 E AR GA T l O l CF N RE OT 2 S A 0 3 0 L E R 2 UG 2 0 s 6 4 2 I 1 1 O. 0 0 0 F 0 O O O O O ga< j l

T N5 A T o N E9 i D a E R ON a t I N

m s

N sr e A wn T T CB + A 0 AT 8 0 E 3 AVI DN L ) C 0 F Y + 0 PD 2 ee RDA gr A e HA d T 0 ( C A 0 E D 'f ' 1 tN Z o E I AC T t A HN /. t A 5 E R O r 3 A E h TP /, ET P NA I 0 T U E 0 S 1 E R T SUT GC NA 0 OR 0 F 2 8 0 0 0 O 0 O-0 6 2 B 4 2 1 1 l

18 developed SONG-3 HAZ data are consistent with the CE SONGS-2 HAZ data as shown in Table 3-3. Visual observations of the fractured. specimens are summarized in Table 3-2. for the tests conducted above 40 F,.the cracks were gen-erally planar, but not at right angles to the specimen surface. The departure from planar, vertical fracture was substantially less in the Battelle specimens than in the CE specimens. Additional work is needed' to confirm that the fracture was through.the HAZ. TABLE 3-2. CHARPY V-NOTCH IMPACT RESULTS FOR UNIRRADIATED l HAZ METAL SPECIMENS FOR SONGS-3 Test Visual Temper. Impact Lateral Fracture. Examination Specimen

ature, Energy, Expansion, Appearance, of Crack Identification F

ft-lb mils % shear' Plane 351 -120 7.5 5.0 11.0 flat 353 -120 9.5 3.2 9.3 flat 1511 -80 23.5 13.0 12.4 flat 1512 -80 26.0 16.6 17.8 flat i 1517 -40 27.5 21.8 13.1 flat 354 57.0 36.2 31.1 flat 355 0 39.5 31.8 49.2 fairly flat 159 0 64.5 43.2' 55.4 fairly flat 1516 20 61.5 46.6 52.0 flat 155 20 76.0 49.8 54.7 flat l 153 20 82.0 50.6 56.3 fairly flat 1518 40 93.0 63.8 63.1 fairly flat 1510 40 99.0 64.0 73.4 slanted ' 1513 40 105.0 64.4 72.9 slanted 158 80 113.0 72.6 100.0 slanted i 156 80 115.0 65.0 100.0 slanted i 1S4 120 122.0 83.4 100.0 slanted j 1514 120 150.0 86.6 100.0 slanted 157 160 128.0 87.2 100.0 slanted I 152 160 153.0 82.2 100.0 slanted i 356 210 118.0 78.8 100.0 slanted 1515 210 132.0 75.8 100.0 slanted

19 HAZ MATERIALS FOR SONGS-2 AND SONGS-3(OS U SUtHARY OF CHARPY IMPACT PROPERTIES F TABLE 3-3. 1) 30 ft-lb' 50 ft-lb 35-Mil Lateral Upper Transition Transition Expansion Shelf Temperature, Temperature, Temperature,

Energy, Material F

F F ft-lb HAZSONGS-2(2) -61.1 -28.1 -20.0 134.6 HAZ SONGS-3(3) -59.7 -21.4 -19.7 133.1 (1) The SAM McFRAC code was used to fit the data. Both units have pressure vessels fabricated from SA 5338, class 1, mil B-4 weld. lCEdata. Battelle data. 3.2 RTNDT Analysis Substantially different results were obtained by Battelle in comparison with CE. This is illustrated in Figure 3-4. As shown.in Figure 3-5, the CE HAZ data scatter above 0 F spans the base and weld data. This behavior would be expected if the notches were not machined' in the HAZ region. The CE and Battelle data are in reasonable agreement below about 0 F (Figure 3-4). Figure 3-6 compares Battelle HAZ data with CE base and weld data.,The Battelle data is near the upper confi-dence band of the weld data throughout the transition region. This is consistent with the data trend observed for SONGS-2 as shown in Fig-ure 3-7. The SONGS-2 vessel was also constructed using SA 533-B, Class i steel. Based on the evidence available at the present time, Batta11e recommends that the CE HAZ Charpy data be discarded. We believe that i the data reported herein is accurate, consistent with known data trends, l and is of the highest quality. Based on this recommendation, the ini-tial RT for the HAZ metal for SONGS-3 is -40 F. This value for the NDT RTNDT was determined in strict conformance with the ASME code using the CE drop weight data (I) and the Battelle Charpy data reported here. The

Il 3 20 NDT reported in reference (1) is -40 F and three Charpy tests, conducted at 20 F were above SG ft-lb. l I i i l l l

1 E 9 L 7 9 t 1 I zI Z AA mB HG A + O N 2 O 3 I S ++ F ) + I ( R 3 A AA+ E P R 0 TM A A + + 6 U T N O I 1 C A ++ A U R A E A P ST + M GA bA E ND A $+ 0 T O A Y T S S P 3 R E A T H 06 ~. C 1 0 0 0 0 o-0 5 0 5 2 1 1 mA_Ig >QW3W g04L!

T ) ) R W E9 9 9 9 N 7 (W 7 R 7 7 ( 9 9 9 9 1 E1 D1 E1 L S mSA E A B W BG + V O A O 2 N 3 A T O A D IS + F ll ) Z A I ( R D 3 A 4g O V+ NA E D P 0 R L E TM , a @V W 6 U T N O 1 I E S A A C A B U A, R E C E g VA A P F O ST M N + O GA E S I R ND p9AAY 0 T A ( PM O O C Y @h-T S P S 5 R O8 E 3 T A U E R H G 0 I C ~ '7 F 6 1 0 0 0 0 O-0 5 0 5 2 1 1 nOIg h EWZW h < I""

A 1 T N7M7 ) W E9 9 9 EL R7 9 9 9 t E1 D1 E1 i mA AG Wm BN iS L S E A BB A V D A O N 2 O 3 I ) 8 F I ( R 3 A AAA5OV E P R 0 TM A gA DV gV 6 U T N O I 1 A C A ^ A ED yV U A A RE A OD

  • Vi A

P ST e M GA gg E ND A a8 iiV 0 T O gg T Y S P a a ES R T A A H 0 C 6 1 0 0 0 o o-0 5 0 s 2 1 1 nO ~ HEW 2W bE$- l

W8 A W R T 8 8 8 R7 W E 7 E7 7 ( 9 9 9 N9 E1 E1 D1 1 S S L Z A A E A BG B W HG A + V 0 O 2 N 3 O I ) S F I ( R 2 A g++ E P + 0 R TM "+ + 6 U T I 1 N O A Ai ll ^ C U RE OUA A++ A P ST yy OO Oe M GA E ND O VO V +4" 0 T O Y s0 T S P SE R T A ll H 0 C 6 1 0 0 0 0 O-0 5 0 5 2 1 1 A_h* >g3WZW b E

'25 4.0 '

SUMMARY

Charpy data reported by CE for. tests above 0 F exhibits-excessive scatter which brackets plate and weld data in the transition region and on the upper shelf. Based on an examination of tested and untested CE specimens, Battelle-generated data and-data trend analysis, we believe that there are' sufficient. questions concerning the; validity of the CE data to preclude its further use. These questions are largely associatea with inherent geometry unique to HAZ metal. Based on CE drop weight data and Battelle Charpy data, the initial RTNDT for the SONGS-3' HAZ material is -40 F.

26

5.0 REFERENCES

(1) Ragl, A., " Southern California Edison San Onofre Unit 3,: Evaluation-of Baseline Specimens", Report No. TR-S-MCM-004, Prepared by the Nuclear Power Systems, Combustion. Engineering, Inc., November 30, 1979. (2) Letter from M. P. Manahan, Sr., Battelle, to Mr. Phil Brashear, Southern California Edison Company, dated 2/16/89. (3) CE Test Specimen Drawing #S023-913-16-2 (E-1470-165-112), " Heat Affected Zone Metal Test Specimens", CE Power Systems, March 26,- 1979. (4) Manahan, M. P., Quayle, S., Rosenfield, A. R., and Shetty, D. K., " Statistical Analysis of Cleavage-Fracture Data", Presented at the International Conference and Exhibition on Fatigue, Corrosion Cracking, Fracture Mechanics, and Failure Anal} sis, Salt Lake City (December 1985). (5) Manahan, M. P., et al, " Statistical Methodology for Analysis of. Fracture Mechanics Data", Final Report to Corporate Technical Development, Battelle Memorial Institute, Columbus, Ohio (January 1985). ) i u I

h G e APPENDIX A PRE-TEST PHOTOGRAPHS OF CHARPY SPECIMENS SHOWING NOTCH LOCATION IN HEAT AFFECTED ZONE l

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M 4 S APPENDIX B POST-TEST PHOTOGRAPHS OF CHARPY SPECIMENS SHOWING FRACTURE SURFACES

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