ML081650454
| ML081650454 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 06/13/2008 |
| From: | Gerald Bichof Dominion Nuclear Connecticut |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 08-0047B | |
| Download: ML081650454 (29) | |
Text
Dominion Nuclear Connecticut, Inc.
-)(100 Dominion Boulevard, Glen Allen, Virginia 2,060
\Xvh Address: www.dom.com June 13, 2008 U. S. Nuclear Regulatory Commission Serial No. 08-00478 Attention: Document Control Desk NL&OS/MAE RO 11555 Rockville Pike Docket No. 50-336 Rockville, MD 20852 License No. DPR-65 DOMINION NUCLEAR CONNECTICUT, INC.
MILLSTONE POWER STATION UNIT 2
SUMMARY
OF REACTOR COOLANT PUMP DISSIMILAR METAL WELD EXAMINATIONS Dominion Nuclear Connecticut, Inc. (DNC) is providing herein a summary of the Millstone Power Station Unit 2 (MPS2) reactor coolant pump Dissimilar Metal (OM) weld examinations performed during refueling outage 18. The summary report in the attachment to this letter provides results of an examination technique described by Relief Request 89-64 for select Class 1 piping OM welds at MPS2, (Reference DNC letters 07-0533, 08-0047, and 08-0047A dated September 27,2007, February 18 and March 26, 2008).
Please contact Mr. William D. 8artron at (860) 444-4301 if you have any questions or require additional information.
Sincerely,
~~:':?~1S Vice President - Nuclear Engineering Commitments made in this letter: None
Attachment:
Summary of Reactor Coolant Pump Dissimilar Metal Weld Examinations cc: U. S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406-1415 Ms. C. J. Sanders NRC Project Manager Millstone U. S. Nuclear Regulatory Commission, Mail Stop 0-8 83 One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738 NRC Senior Resident Inspector Millstone Power Station
Serial No. 08-00478 Docket No. 50-336 ATTACHMENT
SUMMARY
OF REACTOR COOLANT PUMP DISSIMILAR METAL WELD EXAMINATIONS DOMINION NUCLEAR CONNECTICUT, INC. (DNC)
MILLSTONE POWER STATION UNIT 2
Serial No. 08-00478 Docket No. 50-336 Summary of RCP DM Weld Examinations Attachment, Page 1 of 27
SUMMARY
OF REACTOR COOLANT PUMP DISSIMILAR METAL WELD EXAMINATIONS Eight (8) high safety significant (HSS) dissimilar metal (DM) welds located on the reactor coolant pump (RCP) inlet and outlet reactor coolant system (RCS) cold leg piping were examined using ultrasonic examination techniques during the recent 2R18 refueling outage.
Manual ultrasonic techniques qualified in accordance with ASME Section XI, Appendix VIII, Supplement 10 for DM welds, as modified by the Performance Demonstration Initiative (PDI)
Program, were applied from the outside surface of the components for the examinations.
The DM welds examined consisted of the inlet nozzle (suction) elbow to safe-end welds and outlet nozzle (discharge) safe-end to pipe welds of each RCP. The inlet elbow to safe-end welds consists of clad ferritic steel elbow (P-1) to cast austenitic stainless steel safe-end (P-8) with Alloy 82/182 weld material. The outlet safe-end to pipe welds consists of cast austenitic stainless steel safe-end (P-8) to clad ferritic steel piping (P-1) with Alloy 82/182 weld material.
The applicable weld numbers for each configuration is tabulated in Table 1 along with the figures associated with the examination coverage figures.
Table 1 Weld Number Configuration Description Coverage Plots P-4-C-1 Inlet Elbow to Safe-End Figures 1, 2, & 3 P-5-C-3 Outlet Safe-End to Pipe Figures 4, 5, & 6 P-8-C-1 Inlet Elbow to Safe-End Figures 7, 8, & 9 P-9-C-3 Outlet Safe-End to Pipe Figures 10,11, & 12 P-13-C-1 Inlet Elbow to Safe-End Figures 13,14, & 15 P-14-C-3 Outlet Safe-End to Pipe Figures 16, 17, & 18 P-17-C-1 Inlet Elbow to Safe-End Figures 19, 20, & 21 P-18-C-3 Outlet Safe-End to Pipe Figures 22, 23, & 24 These welds were examined under the Risk Informed Inservice Inspection (RI-ISI) Program as Code Item Number R1.15, "Elements Subject to PWSCC." The inner 1/3 of the weld and adjacent base material were required to be volumetrically examined for ~" from the weld toe or counterbore (if present) on each side of the weld. In addition to the RI-ISI Program requirements, MPS2 applied the industry guidance contained in the Materials Reliability Program, "Primary System Piping 8utt Weld Inspection and Evaluation Guidelines (MRP-139),"
dated August 2005.
The design configuration of these dissimilar metal welds limits the volumetric examination from the ferritic steel side of the welds. Due to the short length of the cast austenitic stainless steel safe-ends and the adjacent safe-end to pump welds there is no access or surface to perform any scanning from the safe-end side of the weld.
Serial No. 08-00478 Docket No. 50-336 Summary of RCP DM Weld Examinations Attachment, Page 2 of 27 All scanning of the ultrasonic search units was performed from the ferritic elbow or pipe side of the weld using the Appendix VIII, Supplement 10 demonstrated examination procedure for DM welds. The cast stainless steel safe-end base material portion of the examination volume is not addressed by the Supplement 10 procedure demonstration. This portion of the examination volume was examined to the extent possible on a "best effort" basis from the far side of the weld using the Appendix VIII, Supplement 10 demonstrated procedure. The use of the low frequency longitudinal wave search units, focused for the thickness being examined and with the examination parameters of the DM weld procedure, meets or exceeds the ASME Section XI, Appendix III examination requirements.
The determination of examination volume coverage is addressed by region based on procedure qualifications; 1) qualified material (Inconel weld/butter and ferritic base material) volume, 2) best effort cast stainless steel volume, and 3) total RI examination volume.
The coverage determination of the Appendix VIII procedure qualified materials was performed using a conservative approach, claiming complete coverage only when both beam angles (45° and 60°) interrogate the volume when scanning in the axial direction. Circumferential scanning was performed by skewing the ultrasonic beam into the examination volume from the adjacent base material to interrogate the required volume. Scanning from the weld surface was not possible due to the tapered surface which results in loss of contact of the search unit at the transition between the component and weld. The entire wetted surface of the Alloy 82/182 material was examined with at least one beam angle.
The coverage determination of the cast stainless steel examination volume was performed claiming coverage of the portion of volume interrogated by at least one beam angle, either 45° or 60° in the axial scan direction. Coverage of the far side of the weld examination volume (cast stainless steel safe-end) is not practical when scanning in the circumferential direction through the weld material. No coverage of the cast stainless steel examination volume in the circumferential scan direction is claimed during these examinations.
Coverage of the entire RI examination volume is determined by combining the Appendix VIII qualified volume coverage and the Appendix III "best effort" volume coverage.
Table 2 summarizes the examination coverage for these eight DM weld examinations. Figures 1 through 24 detail the claimed coverage of each weld and examination volume region discussed above. Scan limitations exist on the discharge safe-end to pipe welds, which consist of nozzle penetrations in the pipe at several circumferential locations (as described on the applicable figures) that restrict the axial movement of the search units. The axial movement of the search unit was also restricted by the weld taper transition at the weld toe of the discharge DM welds, which limits the coverage of the far side cast stainless steel volume.
Serial No. 08-00478 Docket No. 50-336 Summary of Rep DM Weld Examinations Attachment, Page 3 of 27 I Table 2 Examination Volume Coverage Summary Appendix VIII Qualified MateriallTechnique Coverage i (Alloy 600 & CS Base Material) Total Risk CSS Informed (RI)
Best Effort Axial Volume Circumferential Composite Wetted Coverage Weld # Beam Coverage I Beam Direction Coverage Surface Direction P-4-C-1 100 100 100 100 50 80 P-5-C-3 83.8 100 91.9 100 45.9 73.1 P-8-C-1 100 100 100 100 50 80 P-9-C-3 85.5 100 92.7 100 45.9 73.6 P-13-C-1 100 100 100 100 50 80 P-14-C-3 87.2 100 93.6 100 45.9 74.5 P-17-C-1 100 100 100 100 50 80 I
I P-18-C-3 87.2 100 93.6 100 45.9 74.5 Note: Wetted surface coverage refers to the ID surface of the Alloy 82/182 material completely interrogated by at least one beam angle in the axial and circumferential beam directions.
In summary, no flaw indications were detected for these eight DM welds examined with the qualified ultrasonic examination procedure, equipment and personnel.
Serial No. 08-00478 Docket No. 50-336 Summary of Rep DM Weld Examinations Attachment, Page 4 of 27 Weld# P-4-C-1 Appendix VIII qualified Procedure/Material Examination Coverage Calculations (lnconel Weld Metal & lnconel Buttering and Carbon Steel Base Material)
Examination Volume Coverage Axial Scan Direction = 100%. Circumferential Scan Direction Coverage = 100%
Composite Axial and Circumferential Examination Coverage = 100%
~
I*
\
Required Examination Volume \r:f,l ie1
\'i\
\~\
I~\
Cross Sectional Examination Area:
1.96 sq. in. (100%)
\'\.e.
i*.
- S 1\..*
Stainless S 45 Deg.
60 Deg. -,
45 & 60 Degree axial scan direction coverage 1,96 sq. in. for the entire length of weld
,::~~>.;;-_II~
100% coverage of the total examination volume 45 Degree skewed circumferential scan direction coverage 1.96 sq. in. for the entire length of weld 100% coverage of the total examination volume Examination Performed as Detailed Above.
No examination performed from the safe-end side of the weld due to lack of scan surface due to configuration.
Figure 1
Serial No. 08-00478 Docket No. 50-336 Summary of Rep OM Weld Examinations Attachment, Page 5 of 27 Weld# P-4-C-1 RIsk Informed Examination Coverage of the cast Stainless Steel (CSS) Base Material Examination Volume on the Far Side of the Weld as a "Best Effort" Examination in Accordance with ASME Section XI, Appendix III Composite (Axial & Circumferential Directions) of the CSS Examination Volume Coverage = 50%
Examination Performed Using ASME section XI, AppendiX VIII Qualified Procedure for the Dissimilar Metal Welds.
The Examination Techniques Used Meet or Exceed the Appendix III Examination Requirements.
Required Examination Volume
\t.,.\\.'
\~\
B m
\'& \.
\~\
3.48 rn Jl l~\
Cross Sectional Examination Area: \ \
~
1.28 sq. in. '" 100% -----...~.
Clad o De9.
s
~
- !:c\1J ff~
U cE w:illl
~=~~;;~~~~~I~II<')
45 & 60 Degree axial scan direction coverage ~ j 1.28 sq. in. for the entire length of weld on 100% coverage of the total examination volume ~
Gl
. \
l \
\
\
\ \\
45 Degree skewed circumferential scan direction coverage \
0% coverage of the total examination volume --=-~'\..
Examination Performed as Detailed Above.
No examination performed from the safe-end side of the weld due to lack of scan surface due to configuration.
Figure 2
Serial No. 08-00476 Docket No. 50-336 Summary of Rep OM Weld Examinations Attachment, Page 6 of 27 Weld# P-4-C-1 Total Risk Informed (RI) Examination Volume Coverage Examination Volume Coverage Axial Scan Direction = 100%, Circumferential Scan Direction Coverage 60% =
Composite Axial and Circumferentail Examination Coverage 80% =
I*
Required Examination Volume \j
\~\
3.48 A
UJ J
c:
~
Cross Sectional Examination Area:
3.24 sq. in. (100%)
\i\
\$\
'IS:. \. T 2.86
~
"all
~
60 Deg.
45 & 60 Degree axial scan direction coverage 3.24 sq. in. forthe entire length of weld 100% coverage of the total examination volume
\\
45 Degree skewed circumferential scan direction coverage 1.96 sq. in. for the entire length of weld 60% coverage of the total examination volume Examination Performed as Detailed Above.
No examination performed from the safe-end side of the weld due to Jack of scan surface due to configuration.
Figure 3
Serial No. 08-00478 Docket No. 50-336 Summary of Rep DM Weld Examinations Attachment, Page 7 of 27 Weld# P-5-C-3 Appendix VIII Qualified Procedure/Material Examination Coverage Calculations (Inconel Weld Metal & lnconel Buttering and Carbon Steel Base Material)
Examination Volume Coverage Axial Scan Direction:: 83.8%. Circumferential Scan Direction Coverage:: 100%
Composite Axial and Circumferential Examination Coverage:: 91.9%
The entire Alloy 600 weld material (weld & buttering) is interogated by at least one beam angle. 45 or 60 deg. as detailed below.
1.88 in 1O<W. examinIlionCO'VCfllF of!he lnconelmaterial is determined Required Examination Volume by !heexmnination volumeeffectively intem>pted by botb the 4S IllId 60 degree sesn:ll UllilSin the uial beam direc:tim. Circumfor<:ntial coverage determlnod by the volume effectively interropted by the 4S dA:grcc search emit &kcwed into the weld region.
~~~_--:T--:"7',,",,45 &60 Degree "1IlIICIm d i _ ~
lCI: for unclJslrudlldragron 1.44 sq. In. '", Hl4" 01 weldIangth= 149.76 cu ,n.
79.7% of toI8l **""""BUen vOlume 3.00 in NozzleconneetiOJl5 limit !he axialdistllnce of search emitmovement to 3.0" fromthe weld toe to the search unit exitpoint.
45 & flO <leg"", lIXial """" direction in "'lIion 01 nazzte limillllions 0.65 sq. in for 12" orMIld length ~ 7.8 cu. in.
- 4. t% of Iolai _nBtiOn volume 45 Degree aJ<ewed ci""'mfetentilll """" di'8Cloon 162 sq in. for 116" orweld Iengll1 188 cu. "'. (100%)
Axial Scan Limited for 12" of Weid Length Due 10 Spray Nozzle and Instrumentation Nozzle on the Pipe Side of the Weld.
The Spray Nozzle is Located @ TOC From 4" CCW TO 4" CWo The Instrumentation Nozzle is Located @ 10" CCW TO 14" CCW.
No Examination was Performed on the Upstream Side of the Weld (Safe-End) Due 10 the Lack of Scan Surface of the Safe-End Conf'iluration.
Examination Performed as Detailed Above Figure 4
Serial No. 08-00478 Docket No. 50-336 Summary of Rep DM Weld Examinations Attachment, Page 8 of 27 Weld# P-5-C-3 Risk Informed Examination Coverageof the Cast Stainless Steel (CSS) Base Material Examination Volume on the Far Side of the Weld as a "Best Effort" Examination in Accordance with ASME Section XI, Appendix III Composite (Axial & Circumferential Directions)of the CSS Examination Volume Coverage = 45.9%
Examination Performed Using ASME Section XI, Appendix VIII Qualified Procedurefor the DissimilarMetal Welds.
The ExaminationTechniques Used Meet or Exceedthe Appendix III Examination Requirements.
1.88in 100%exllllialltiOll """"'"I" deIemliDect by theexIIIlillItioa vollllllO cJTccllwly iDtcI.'roptccI bT eltbcr1he45ml60 d<:grI:c oeIIl:h IIlIlI Required Examin8llon Volume in theWaI beam diroetIoD. Cin:lIlllfenmliaI..,."..,. cldoImiaed by mevolUlllC cIYcctlvcly blIcrroptcd by 1he45 dc&tcc tcatCb unit.
"tql.tif'l<l 00II Stc:iOMai r~AtM urIC! ... (1001'i) 3.00 in 46&60 OogIw ....i ""'-'00'IeIlIge O.89IOl.inlorl1ll"af_longlh" 10324",,"
91 -8%of It*I e:qminelion f/Oiume Unable to SCllll ftom the weld crown or we-el:ld sIde of!be weld due to configmation.
Ntlal Scan Limited for 12" of weld Lenglh Due ID $prey Nauia and Instrumentation Nozzle on tile Pipe Side ofllle Wala. The Spray Naule ill LocatecI@ TDC From 4" COO TO 4" CW The Instrumentation Nozzle is LaceleC @ 10" CCW TO 14" CCW. Howevw, tile axielscan llmitelion doeS not impect tile best effort examination of tile far side of tile weld.
No Examination was ?erformea on tile Upstream Siae of tile WelC (sar&-Ena) Due ID the Leek of scan Surteoeor the safe-End Conf'llura!ion Examination ?stormed as Deteilea Above Figure 5
Serial No. 08-00478 Docket No. 50-336 Summary of Rep OM Weld Examinations Attachment, Page 9 of 27 Weld# P-5-C-3 Total Risk Informed (RI) Examination Volume Coverage Examination Volume Coverage Axial Scan Direction = 84.2%, Circumferential Scan Direction Coverage 62% =
Composite Axial and Circumferentail Examination Coverage 73,1 % =
1.88 in Required Examination Volume Cross sectional b:amtl'abon A:rea 26211q in (100%) J 2,9" Weld Lcllglh ~ 116" i
1----:3.00 in
- I
~-----tI~*~*1.00in 45 & eo degree....I IlCen d,rectiOn in unoIlstrudIId region 01 weld.
2.2911q. in for 104" 01_ lenoth % 2382cu. in.
78,4%of toll/I exlmlnatlon voduma N~c connectiOll$limit the axial dlstlwce of seuch Wlitll1oveme.ot to 3.0" from the weld toe to the search unit exit point.
45 & 60 deg... Ixill _n dil'llCbOn in "'Ulon 01 nouil lirnilatione 1.48 sq. in lor 12" of weld ienglh = 17.78 cu. in.
0.8% of lOlaI examInation vodume
-g w
j
~
- l;.:l
~I U<Il 5 Degree skewedclrcumterenlill scan direction lije
, 1: , . - - - - -
1.62 "'l. in. lor 116" of .... k1I.nglh 168 eu In. (62%)
- Ji~
=
U Axial Scan Limited for 12" of Weld Length Due to Spray Nozzle and InstrumentatiOn Nozzles on the Pipe Side of the Weld.
The Spray Nozzle is Located @TDC From 4" CCW TO 4" CWo The Instrumentation Nozzle is Located@ 10* CCW TO 14" CCW No Examination was Performed on the Upstream Side of the Weld (Safe-End) Due to the Lack of Scan Surface of the Safe-End Configuration.
Examination Peformed as Detailed Abollfl Figure 6
Serial No. 08-00478 Docket No. 50-336 Summary of Rep DM Weld Examinations Attachment, Page 10 of 27 Weld# P-8-C-1 Appendix VlJI qualified Procedure/Material Examination Coverage Calculations (Inconel Weld Metal & Inconel Buttering and Carbon Steel Base Material)
Examination Volume Coverage Axial Scan Direction = 100%, Circumferential Scan Direction Coverage = 100%
=
Composite Axial and Circumferential Examination Coverage 100%
Required Examination Volume
~
iIi 3.48 J Cross Sectional Examination Area:
1.96 sq. in. (100%)
~
a s
45 Deg.
60 Deg.
45 & 60 Degree axial scan direction coverage 1.96 sq. in. for the entire length of weld
,::~~~~~;im 100% coverage of the total examination volume 45 Degree skewed circumferential scan direction coverage \
1.96 sq. in. for the entire length of weld 100% coverage of the total examination volume Examination Performed as Detailed Above.
No examination performed from the safe-end side of the weld due to lack of scan surface due to configuration.
Figure 7
Serial No. 08-0047B Docket No. 50-336 Summary of Rep OM Weld Examinations Attachment, Page 11 of 27 Weld# P-8-C-1 Risk Informed Examination Coverage of the Cast Stainless Sfeel (CSS) Base Material Examination Volume on the Far Side of the Weld as a "Best Effort" Examination in Accordance with ASME Section XI, Appendix III Composite (Axial & Circumferential Directions) of the CSS Examination Volume Coverage = 50%
Examination Performed Using ASME Section XI, Appendix VIII Qualified Procedure for the Dissimilar Metal Welds.
The Examination Techniques Used Meet or Exceed the Appendix III Examination Requirements.
_______-;1." \
Required Examination Volume 220::1
,~\ "i ~---
Cross Sectional Examination Area:
1.28 sq. in. =100% ----+4.....
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~ i 2 86
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45 Deg.
o Deg.
-g UJ
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~=~~;~~§~IIII~~ S 45 & 60 Degree axial scan directioncoverage ;a ~
1.28 sq. in. for the entire length of weld VJ 100% coverage of the total examination V..O.~lu.m
.....e.. ~...... Jl
\ 1
\
I \
\
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1; 45 Degreeskewed circumferential scan directioncoverage \
0% coverageof the total examination volume Examination Performed as Detailed Above.
No examination performed from the safe-end side of the weld due to lack of scan surface due to configuration.
Figure 8
Serial No. 08-00478 Docket No. 50-336 Summary of Rep OM Weld Examinations Attachment, Page 12 of 27 Weld# P-8-C-1 Total Risk Informed(RI) ExaminationVolume Coverage ExaminationVolume Coverage
Axial Scan Direction 100%.Circumferential Scan Direction Coverage 60%
CompositeAxial and Circumferentail ExaminationCoverage = 80%
, I*
\
Required Examination VOIUme\t'
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3.48 ij5ai Cross Sectional Examination Area: '\c; \
3.24 sq. in. (100%) \..... \
~
~
45 Deg.
60Deg.
45 & 60 Degree axial scan direction coverage 3.24 sq. in. for the entire length of weld 100% coverage of the total examination volume 45 Degree skewed circumferential scan direction coverage 1.96 sq. in. for the entire length of weld 60% coverage of the total examination volume Examination Performedas DetailedAbove.
No examination performedfrom the safe-endside of the weld due to lack of scan surface due to configuration.
Figure 9
Serial No. 08-00478 Docket No. 50-336 Summary of Rep DM Weld Examinations Attachment, Page 13 of 27 WeldtIP-9-e-3 Appendrx VIII Qualified Proc8durelMaterial Examinalion eoWlr&Q8 Cak:ulalions (Inoonel Weld Melli & inoonelBUlle~ng and CarbonS_ B8M M8lerJ8I)
Examination Volume Coverllll" Ax",1 SC;an Direction ~ 86.5%. CITCUmf-.ual SC;an Dlf1IClion Co"""'ll't c 100%
Composilll Axial lind Circumfe"",lilIl EXlIminlllion CovtmIQe = 92.7%
The enlire Alloy BOO weld m_al (weld & bullerlngJ is in"'lla1ed by at JeesI one beam angle, 45 or 60 deg as detllli<ld below.
J00";0 eumiDlition COverage of the Inconel material is determined Required Examination Volume by the cxaminalion volume effectively interrogated by both the 45 and 60 degree searchunits in the 8ltia1 beam di=tion. Circumferential coveragedetermined by the volumeeffectivelyin~ by the 45 degzee search UDiI skewed inlo the weldregion.
C"ON Sectional ExlIminlllion AIu:
1.62 sq. in. (100%)
TollIl ExlImlnation Volume ~ 188 cu. in. (100%)
Tocal Weld Lentllh 116" 45 60
~~~_----:::-r--7"":;;"-45 & 60 D9gree .x,al scan direction coveraga
... for unobstrucllld FlIgIon 1.44 sq. in. for 108" of_ld length = 155.52cu. in.
82.7% of ~ examination volume 3.00 in Nozzleconnections limittheaxial distance of searchunitmovement to 3.0' fromthe weld toe to the search unit exit point.
45 & 60 degree axialscan dIrection In region of nllZZlelimitations 0.1l5sq. in for 8" 01 weld length = 5.2 cu. in.
2.8% of total exeminationvolume 45 Deftree skewed circumferen\i8lscan direction 1.62 sq. in. for 116" 01 weld length 188 cu. in. (100%)
Axial Scanlimited lor 8" 01Weld LengthDue to SprayNo.z.zle on the Pipe Slde01the Weld.
The Spray Nozzlei, Loc:alIld CD TDCFrom4" CCWTO4" CWo No Examination Wll8Performed onthe Upstream Side of the Weld(SBIe*End) Due to the Lack of Scan SurfBoe of the S8fe-End Configuration.
E><aminlltlon Performed as DetailedAbove Figure 10
Serial No. 08-00478 Docket No. 50-336 Summary of Rep OM Weld Examinations Attachment, Page 14 of 27 Weldlll P*g.C*3 RllIk Informed Examina~on Coverage of the Callt Slainlen Steel (ess) BaH Material Examination Volume on l/1e Fill" Side of the Weld as * "Best Elrcrt" Ex.mina~on '" Acco.a.nce with ASME Seclion XI. Appendix III COm~w (Axial & CirwmferenlialDiI'llCtiona) of the CSS Exemin.~on Volume Covensge =45.9%
Examination Perklrmed USing ASME 8eclion XI. Appendix VIII Qualified Proceciuns lor !he Di8elmilllr Melal Wekl8.
The Examination Technique. Used Meet or Exceed the Appendix III Examination Requinlments.
l,SS in I 00"1cr examinationcoverage determined by the examinationvolume effectivelyinterrogated by either the 45 lIlld 60 degree searchunit I Required Examination Volume Required Cross Sectional ExamiantionArea
~
0:
~2.9" in the axialbeam direction. Circumferential coverage determined by the volume effectivelyinterrogatedby the 45 degree search unit
.97 sq. in. (100%)
ToUli EX8mina~on VOl..."." 112,5 cu. In (100%)
Total WeldLength J 16"
~
3.00 in
--- ..._~
AxialscBlllimluxlllt the pointof 1_
of eODlael of thcsearch unit due to thc taper of the weld.
45 & 60 Degnse axial scsn direction coverage 0,89 sq, in lor 116" of weld length = 103.24 CU, in.
91,8% of tOlal examination volume w
~
Unable to scan from the weldcrownor safe-end
~i side of the weld due to configuration.
~l Jl:-'.. _-_. .
U ii5
"' lZ Volume Examined - Circumferential Scan Direction Oeu. in, (0%)
~--------------
Axial Scan Limited for 8" of Weld Length DYe to Spray Nozzle on l/1ePipe Side of the Weld. The Spray Nozzle is Located Cil TOC From 4" CCW to 4" CW, However,!he axial_n limitation does not impact the beIIt ellon examination of the far side of !he weld.
No Examination was Performed on the Upstream Side of the Weld (S8fe..End) DYe to !he Lack of Scan Surface of the S8fe..End Configuration.
Examination f>elormed as Delalied Above Figure 11
Serial No. 08-00478 Docket No. 50-336 Summary of Rep OM Weld Examinations Attachment, Page 15 of 27 WeId# P-ll-C-3 Total RISk '"formed (Rl) ExamillallOrl Volume Covlll'll\le Exam,"elJOn Volume Coverage Axial Scan Direction = 85.3%. Circumferential Scan Direction C~e = 62%
Cc>mpcsite Axial and Ci~u""'renIlIiI Examination Coverage = 73.6%
1.88 in "I
I RequiredExaminationVolume 8.
0::
) 2.9" Weld Length ~ 116"
~
:3.00 in '"I
+1...>-11.00 in 45 & 60 clIIgree axlalllCan dlrectioo In unob8trueled region of weld.
29 sq. in for 108" of weld length = 24732 cu. in.
8104% of loIal eJ<8mlnatic>n volume
---......,3.00 in
- I
- - -......"....'100 in Nozzle connectionslimit the axial distance of searchunit movement to 3.0* from the weld toe to the sclll'cll unit exit point.
45 & 60 degree axial scan direction in r1Igion of nozzlelimitations 1048 sq. in for 8" or weld Ienglh ~ 11.84 cu. ill.
3.9% ortolal examinlltion volume 5 Degree skewed circumferential 8C8n direction 1.82 sq. In. for 118" 01weld length 188 cu. in, (62%)
Axial Scan limited for 8" of Weld Lenglll Due to Spray Nozzle on the Pipe Side of the Weld, The Spray Nozzleis Located @ TOC From 4" CCWTO 4" CW No Examination wasPerformedon the Upetreem Sicle of the Weld (5afe-End) Due10 the LadI of Seell Surfaceof !he Safe-End Configuration.
EJ<8mination Peformed as DelaiI<Kl Above Figure 12
Serial No. 08-00478 Docket No. 50-336 Summary of Rep OM Weld Examinations Attachment, Page 16 of 27 Weld# P-13-C-1.
Appendix VIII qualified Procedure/Material Examination Coverage Calculations (Inconel Weld Metal & lnconel Buttering and Carbon Steel Base Material)
Examination Volume Coverage Axial Scan Direction> 100%, Circumferential Scan Direction Coverage = 100%
Composite Axial and Circumferential Examination Coverage:: 100%
________-y1-:,-=..-220-----! ...
',t ~
I IJJ Required Exammation Volume Cross Sectional Examination Area.
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3.48 j tJ) 1.96sqm.(100%) \ \')
~
a Sbf I 45 Deg.
60Deg.
45 & 60 Degree axial scan direction coverage 1.96 sq. in. for the entire length of weld
,::~~~~~ill 100% coverage of the total examination volume ~~lCIQ~Oli.\._ _,",
45 Degree skewed circumferential scan direction coverage 1.96 sq. in. for the entire length of weld 100% coverage of the total examination volume Examination Performed as Detailed Above.
No examination performed from the safe-end side of the weld due to lack of scan surface due to configuration.
Figure 13
Serial No. 08-00478 Docket No. 50-336 Summary of Rep OM Weld Examinations Attachment, Page 17 of 27 Weld# P-13-C-1 Risk Informed Examination Coverage of the Cast Stainless Steel (CSS) Base Material Examination Volume on the Far Side of the Weld as a "Best Effort" Examination in Accordance with ASME Section XI, Appendix III Composite (Axial & Circumferential Directions) of the CSS Examination Volume Coverage = 50%
Examination Performed Using ASME Section XI, Appendix VIII Qualified Procedure for the Dissimilar Metal Welds.
The Examination Techniques Used Meet or Exceed the Appendix III Examination Requirements.
I* 220~
Required Examination Volume I~
~--
A UJ I 3.48 J 3.oal oS 1,28 45 & sq. entire axial in. for the 60 Degree length scan of weld direction coverage 100% coverage of the total examination volume
~=~~~~~§~~I~I~
\\
\
45 Degree skewed circumferential scan direction coverage 0% coverage of the total examination volume .-=='~-l Examination Performed as Detailed Above.
No examination performed from the safe-end side of the weld due to lack of scan surface due to configuration.
Figure 14
Serial No. 08-00478 Docket No. 50-336 Summary of Rep OM Weld Examinations Attachment, Page 18 of 27 Weld# P-13-C-1 Total Risk Informed (RI) Examination Volume Coverage Examination Volume Coverage Axial Scan Direction = 100%, Circumferential Scan Direction Coverage = 60%
Composite Axial and Circumferentail Examination Coverage 80% =
rI*
Required Examination Volume \t\
\~\
\.~::!. \
\(1),
~
m
\~.\.
\:~,
\~ \
3.48 ~ Cross Sectional Examination Area:
3.24 sq. in. (100%) \ \
c
~
~
Stainless 45 Deg.
60 Deg.
45 & sq.
3.24 in. for the 60 Degree entire axial length scan of weld direction coverage 100% coverage of the total examination volume
~:=~~~~=IIIIIIIII
\
\
\
45 Degree skewed circumferential scan direction coverage 1.96 sq. in. for the enlire length of weld 60% coverage of the talaI examination volume Examination Performed as Detailed Above.
No examination performed from the safe-end side of the weld due to lack of scan surface due to configuration.
Figure 15
Serial No. 08-00478 Docket No. 50-336 Summary of Rep OM Weld Examinations Attachment, Page 19 of 27 Weld# P-14-C-3 Appendix VIII Qualified Procedure/Material Examination Coverage Calculations (Inconel Weld Metal & inconet Butteringjilnd Carbon Steel Base Material)
ExaminatIon Volume Coverage Axial Scan Direction = 87.2%, Circumferential Scan Direction Coverage = 100%
Composite Axial and Circumferential Examination Coverage = 93.6%
The entire Alloy 600 weld material (weld & buttering) is interogated by at least one beam angle, 45 or 60 deg. as detailed below.
1.88 in 100'10 CXlmination coverageof the IDconellDlllerial is determined Required Examination Volume by the examinationvolumeeffectivelyinterrogatedby both the 45 and60 degree sclll'Ch units in the axia1 beam direction. Cin:umfcrentlal coveragedeterminedby the volwne effectivelyinterrogated by the 45 degree search unit skewed into the weld region.
Cron Sectionol Examl_ A_:
1.82 sq. in. (100%)
Total Weld Length = 116" 6009
>L_-.-r---;;>-.£..45 & 60 Deg"", axial 8C8n dll1lCllon cov&noge ror unobslTUCllld regiOn 1.44 sq. in. for lIT of weld Ieng1l1:161.28C<J. in.
!2Si~~~t~ . . . _. . . . . . __-=85=.a=%~O~f:toIlI:l:examlnatlon volume 3.00 in
~I N0Z71e connectionslimit the axial distanceof search unit movement to 3.0" from the weld toe to the search unit exit point.
45 & 60 degree axlel scan d l _
in region of nozzle limitabons 0.65 sq. In for 4" of weld Ieng1l1 = 2.6 cu. In.
1.4% of lotal 8X8min8tion volume
~ -g ......----------
w
- .j 51 <Il 45 oeg"",skewed circymf8l'8ntial 8C8n direction
~j 1.62 sq. in. for 116" of weld length
~! 188 cu. In. (100%)
<Il S
Axial Scan Limited for 4" of Weld Length Due to Instrumentation Nozzle on the Pipe Side of the Weld.
The tnstrumentanon Nozzle is Located @ 10" CW TO 14" CWo No Examination was Performed on the Upstream Side of the Weld (Safe-End) Due to the Lack of Scan Surface ot the Safe-End Configuration.
Examination Performed as Detailed Above Figure 16
Serial No. 08-00478 Docket No. 50-336 Summary of Rep OM Weld Examinations Attachment, Page 20 of 27 Weld# P-14-C-3 Risk Informed Examination Coverage of the Cast Stainless Steel (CSS) Base Material Examination Volume on the Far Side of the Weld as a "Best Effort" Examination in Accordance with ASME Section XI, Appendix III Composite (Axial & Circumferential Directions) of the CSS Examination Volume Coverage = 45.9%
Examination Performed Using ASME Section XI, Appendix VIII Qualified Procedure for the Dissimilar Metal Welds.
The Examination Techniques Used Meet or Exceed the Appendix III Examination Requirements.
1.88 in I .. -I 100% examination coverage determined by the examination volume effectively interrogated by either the 45 and60 degree search unit Required Examination Volume in the axial beam direction. Circumferential coverage determined by the volume effectively interrogated by the 45 degree search unit.
ReqUired Cross Sectional Examiantion Area 97 sq. in. (100%)
f":'7:>~~21"'"H~--'Total ExaminationVolume: 112.~ cu. in. (100%)
TotalWeldLength- 116" 3.00 in
---.*. o-Ir Axial ."""limited at the pointof los.
of eoDtactof the seorchunit due to the taper of the weld.
45 & 60 Degree axial scan direction coverage 0.89 sq. in for 116" of wekllength = 103.24 CU. in.
91.8% of total examination volume
- -----""-~-------
c LU
$ Unable to scan fromthe weldcrown or safe-end
- <8l side of the weld due to configuration.
~Cb Om 1C=-.. ._---'
- ~ Volume Examined - Circumferential ScanDirectjon
.....--------_-:...~---
Ocu. in. (0%)
Axial Scan Limited for 4" of Weld Length Due to Instrumentation Nozzles on the Pipe Side of the Weld.
The Instrumentation Nozzle is Located @ 10* CW TO 14" CWo However, the axial scan limitation does not impact the best effort examination of the far side of the weld.
No Examination was Performed on the Upstream Side of the Weld (Safe-End) Due to the Lack of Scan Surface of the Safe-End Configuration.
Examination Peformed as Detailed Above Figure 17
Serial No. 08-00478 Docket No. 50-336 Summary of Rep DM Weld Examinations Attachment, Page 21 of 27 Weld# P-14-C-3 Total Risk Informed (RI) Examination Volume Coverage Examination Volume Coverage Axial Scan Direction = 86.3%, Circumferential Scan Direction Coverage = 62%
Composite Axial and Circumferentail Examination Coverage = 74.5%
Required Examination Volume Cross Sectional E><amlnation AIea 2.62 sq. In. (100%) !a:: 2.9" WeldLength- 116" S
1------'3.00 in
- I 1-----11.......1.00 In 45 & 60 degree axial scan direction in unobatruetsd region of weld .
.29 sq. in for 112" of weld length; 256.48 cu. ,n 84.4% of total exemination volume Nozzleconnections limitthe axialdistanceof searchunit movement to 3.0" fromthe weld toe to the seen:hunit exitpoint.
45 & 60 dagree axial scan direction In regionof nozzle limitations 1.48 sq. in for 4" of weld length; 5.92 cu. in.
1 ,9% or total examination volume
~-----------
~~
u, ..
()~
5 Degreeskewed cll'CIJmferentialscan d,reclion
~i!l 1.62 sq. in for 118" of weld length
~j 188 cu in (62%)
S Axial Scan Limited for 4" of Weld Length Due to Instrumentation Nozzles on the Pipe Side of the Weld.
The Instrumentation Nozzle is Located @ 10" CW TO 14" CWo No Examination was Performed on the Upstream Side of the Weld (safe-End) Due to the Lad< of Scan Surface of the Safe-End Configuration.
Examination Peformed as Detailed Above Figure 18
Serial No. 08-00478 Docket No. 50-336 Summary of Rep DM Weld Examinations Attachment, Page 22 of 27 Weld# P-17-C-1 Appendix VIII qualified Procedure/Material Examination Coverage Calculations (Inconel Weld Metal & Inconel Buttering and Carbon Steel Base Material)
Examination Volume Coverage Axial Scan Direction = 100%, Circumferential Scan Direction Coverage = 100%
Composite Axial and Circumferential Examination Coverage = 100%
The entire Alloy 600 weld material (weld & buttering in interrogated by both beam angles, 45 and 60 degree as detailed below.
45 Deg.
60 Deg.
45 & 60 Degree axial scan direction coverage 1.96 sq. in. for the entire length of weld 100% coverage of the total examinationvolume 45 Degree skewed circumferential scan direction coverage 1.96 sq. in. for the entire length of weld \\
100% coverageof the total examinationvolume Examination Performed as Detailed Above.
No examination performed from the safe-end side of the weld due to lack of scan surface due to configuration.
Figure 19
Serial No. 08-00478 Docket No. 50-336 Summary of Rep OM Weld Examinations Attachment, Page 23 of 27 Weld# P-17-C-1 Risk Informed Examination Coverage of the Cast Stainless Steel (eSS) Base Material Examination Volume on the Far Side of the Weld as a "Best Effort" Examination in Accordance with ASME Section XI, Appendix III Composite (Axial & Circumferential Directions) of the CSS Examination Volume Coverage 50% =
Examination Performed Using ASME Section XI, Appendix VIII Qualified Procedure for the Dissimilar Metal Welds.
The Examination Techniques Used Meet or Exceed the Appendix III Examination Requirements.
I* 2~~
i ~-g~ T Required Examination Volume 1
A lLI I 3.48 J
~
Cross Sectional Examination Area:
1.28 sq. in. = 100% ----t--..L 3;oa I 5~ i~ 2 86 U
(II
.~~~~~~.~." ~
,l.:M~.,
IIII
~........_.-l..~~2Q<:~;:5~ ~
~~~==~
S'l S ~L..-
45 Deg.
o Deg.
-g lLI
- a:t?l
~1i u(jj
~1Il
~~~;~~§~~I~~~("')
45 & 60 Degree axial scan direction coverage .t 'E 1.28 sq. in. for the entire length of weld en ~
100% coverage of the total examination volume iOIl U
45 Degree skewed circumferential scan direction coverage 0% coverage of the total examination volume -=---\.~
Examination Performed as Detailed Above.
No examination performed from the safe-end side of the weld due to lack of scan surface due to configuration.
Figure 20
Serial No. 08-00478 Docket No. 50-336 Summary of Rep DM Weld Examinations Attachment, Page 24 of 27 Weld# P-17-C-1 Total Risk Informed (RI) Examination Volume Coverage Examination Volume Coverage Axial Scan Direction = 100%, Circumferential Scan Direction Coverage =60%
=
Composite Axial and Circumferentail Examination Coverage 80%
j m
3.48 I
~
a 45Deg.
60 Deg.
45 & 60 Degree axial scan direction coverage 3.24 sq. in. for the entire length of weld 100% coverage of the total examination volume 45 Degree skewed circumferential scan direction coverage 1.96 sq. in for the entire length of weld 60% coverage of the total examination volume Examination Performed as Detailed Above.
No examination performed from the safe-end side of the weld due to lack of scan surface due to configuration.
Figure 21
Serial No. 08-00478 Docket No. 50-336 Summary of Rep DM Weld Examinations Attachment, Page 25 of 27 Weld# P-18-C-3 Appendix VIII Qualified Procedure/Material Examination Coverage Calculations (Inconel Weld Metal & Inconel Buttering and Carbon Steel Base Material)
Examination Volume Coverage Axial Scan Direction = 87.2%, Circumferential Scan Direction Coverage 100% =
Composite Axial and Circumferential Examination Coverage = 93.6%
The entire Alloy 600 weld material (weld & buttering) is interogated by at least one beam angle, 45 or 60 deg. as detailed below.
I
- 1.88 in J00% examinationcoverageof the !neonelmaterialis determined Required Examination Volume by the examination volumeeffectivelyinterrogated by both the 45 and 60 degree scorchunits in the axial beam direction. Circumferential coveragedeterminedby the volumeeffectivelylntem>plcd by the 45 degree search unit skewed into the weld region.
Total WeldLength= 116" 45 D 60
~~&.._--r-"7'.-:;;...45 & eo Degree axilll SCBn direction COWr1l9" lor unobstrucled region 1.44 sq. in. for' 12"'of weld length = 161.28 cu. in.
85.8% of IotBI examination volume 3.00 in
-I N07.71e connection.limit the axialdistance of searchunit movement to 3.0" from the weld toe to the search unit exit point.
~~ii7~~ 45 & eo d"ll_ ..,Ill OCIIn direction in region of nozzlelimitations 0.85 sq. in for 4- of weld length = 2.6 cu. in.
1.4% of IOlal examination volume 45 DegnoelIk8wed circumferential 8C8n direction 1.62 sq. in. for 116" of weld length 186 cu. in. (100%)
Axial Scan Limited for 4" of Weld length Due to Instrumentation Nozzle on the Pipe Side of the Weld.
The Instrumentation Nozzle is located @ 10* CCW TO 14" CCW.
No Examination was Performed on the Upstream Side of the Weld (Safe-End) Due to the Lack of Scan Surface of the Safe-End Configuration.
Examination Performed as Detailed Above Figure 22
Serial No. 08-00478 Docket No. 50-336 Summary of Rep DM Weld Examinations Attachment, Page 26 of 27 Weld# P-18-C-3 Risk Informed Examination Coverage of the Cast Stainless Steel (CSS) Base Material Examination Volume on the Far Side of the Weld as a "Best Effort" Examination in Accordance with ASME Section XI, Appendix III Composite (Axial & Circumferential Directions) of the CSS Examination Volume Coverage 45.9% =
Examination Performed Using ASME Section XI, Appendix VIII Qualified Procedure for the Dissimilar Metal Welds.
The Examination Techniques Used Meet or Exceed the Appendix III Examination Requirements.
1.88in I .. -I 100"10 CXIIIlIination covemge determined by the e:wniuallOll volume effectively intemlptcd by either the 45 and 60 dcgn:esearchllllit f Required Examination Volume Requil1ld CIOIII Sedional Examlanllcn _
in the axial beam direction. CimunfCl'Clltial covemge determined by thevolumeeffectively inlelTogated b).the 45 degree search writ.
97 oq. in. (100%)
3.00 in l
AxialICII1 limillxI alllle point of lola of COlllllCtof lIle ICan:hunit dueto the Iapcr ofllle weld.
45 & 60 0egT.e axialllClU1 dinlCtion co""rage 0.89 oq. in for 116" of weld length ~ 103.24 cu.ln.
91.8% ortotal eJ<lIII'lirl8tionvolume
'C W
J! Unable to scanfromtheweldcrown or safe-end
- >;~ side of the weld due to configuration.
~$
ll:-\.. .
Uiji
<; ~ Volume Examined - Circumferential Scan Oi1'8CliOn
~-..... Oeu.in.(O%)
.............~-"---------"--"-----
Axial5can Limited for 4" of Weld Length Due to Instrumentation Nozzle on the Pipe Side of the Weld.
The Instrumentation Nozzle is Located @ 10* CCW TO 14" CCW. However, the axial scan limitation does not impact the best effort examination of the far side of the weld.
No Examination was Performed on the Upstream Side of the Weld (Safe-End) Due to the Lack of Scan Surface of the Safe-End Configuration.
Examination Peformed as Detailed Above Figure 23
Serial No. 08-00478 Docket No. 50-336 Summary of Rep OM Weld Examinations Attachment, Page 27 of 27 Weld# P-18-C-3 Total Risk Informed (RI) Examination Volume Coverage Examination Volume Coverage Axial Scan Direction> 86.3%,Circumferential Scan Direction Coverage;; 62%
Composite Axial and Circumferential Examination Coverage;; 74.5%
1.88 in Required Examination Volume Crou Sectional EX8mination Ar88 2.62 "'l.ln. (100%) ! 29"
~!~tal ExaminetiOfl Volyme: 303.9;2cu. in. (100%)
~
~
Weld Length= 116" 1-----:3.00 in
- I 1-----1lf.o... 1.oo in 45 & 60 d"llree axial scan direction in unobstrucled region of weld.
=
2.29 sq. in for 112" of weld IengtI1 256.48 cu. in.
84.4% of total ***minalion volume Nozzle connectionslimit the axial distaace of seerch unit movement to 3.0" from the weld toe to the search unit exit point.
45 & 60 degree axlel scan direction in region of nozzle limitations 1.48 sq. in for 4" of weld length = 5.92 cu. in.
1.9% of total examination volume 45 Degree Skewed circumferential seen direction 1.82 sq. in. for 116" of weld length 188 cu. in. (82%)
Axial Scan Limited for 4" of Weld Length Due to Instrumentation Nozzle on the Pipe Side of the Weld. The Instrumentation Nozzle is Located @ 10" CCW TO 14" CCW.
No Examination was Performed on the Upstream Side of the Weld (Safe-End)
Due to the Lack of Scan Surface of the Safe-End Configuration.
Examination Peformed as Detailed Above Figure 24