ULNRC-06218, 10CFR50.55a Requests: Relief from Impractical Examination Coverage Requirements for the Third Ten-Year Inservice Inspection Program Interval
| ML15258A432 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 09/14/2015 |
| From: | Maglio S Ameren Missouri, Union Electric Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| ULNRC-06218 | |
| Download: ML15258A432 (78) | |
Text
~~
WAmeren MISSOURI Callaway Plant September 14, 2015 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 Ladies and Gentlemen:
ULNRC-06218 10 CFR 50.55a DOCKET NUMBER 50-483 CALLA WAY PLANT UNIT 1 UNION ELECTRIC CO.
RENEWED FACILITY OPERATING LICENSE NPF-30 10 CFR SO.SSa REQUESTS: RELIEF FROM IMPRACTICAL EXAMINATION COVERAGE REQUIREMENTS FOR THE THIRD TEN-YEAR INSERVICE INSPECTION PROGRAM INTERVAL Pursuant to 10 CFR 50.55a(g)(5)(iii), Union Electric Company (Ameren Missouri) hereby requests relief from certain examination coverage requirements imposed by the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code,Section XI, 1998 Edition through 2000 Addenda. Per attached Relief Requests BR-08, BR-09 and BR-11, relief is requested for certain weld examinations performed during the third Inservice Inspection Program (lSI) interval, where the required coverage of "essentially 100 percent" as clarified by ASME Section XI Code Case N-460, "Alternative Examination Coverage for Class 1 and 2 Welds," could not be obtained when the subject welds were examined to the extent practical. Per attached Relief Request BR-18, relief is also requested to accept an Appendix VIII examination that was performed on one of the subject welds addressed in Relief Request BR-09 as meeting the first inspection interval examination requirements for Table IWB-2500-1, Examination Category B-B, Item No. B2.40.
The four (4) attached relief requests provide the bases for the determination that compliance with the specified requirements is impractical, and include requests that the examinations described therein be accepted as meeting the Code requirements.
PO Box 620 Fulton, MD 65251 AmerenMissouri.com STARS
- Alliance
ULNRC-06218 September 14, 2015 Page2 Ameren Missouri is submitting these relief requests for the third 1 0-year lSI interval, which ended December 18, 2014. This letter contains no new commitments. If there are any questions, please contact J.P. Kovar at 314-225-1478.
Attachments:
- 1. 10 CFR 50.55a Request Number I3R-08
- 2. 10 CFR 50.55a Request Number I3R-09
- 3. 10 CFR 50.55a Request Number I3R-11
- 4. 10 CFR 50.55a Request Number I3R-18 Sincerely,
~.A.~)
s.A.MagliV Manager, Regulatory Affairs
ULNRC-06218 August xx, 2015 Page 3 cc:
Mr. Marc L. Dapas Regional Administrator U.S. Nuclear Regulatory Commission Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road Steedman, MO 65077 Mr. L. John Klos Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop 0-8B 1 Washington, DC 20555-2738
ULNRC-06218 August xx, 2015 Page4 Index and send hardcopy to QA File A160.0761 Hardcopy:
Certrec Corporation 4150 International Plaza Suite 820 Fort Worth, TX 76109 (Certrec receives ALL attachments as long as they are non-safeguards and may be publicly disclosed.)
Electronic distribution for the following can be made via Other Situations ULNRC Distribution:
F. M. Diya D. W. Neterer L. H. Graessle T. E. Herrmann B. L. Cox S. A. Maglio T. B. Elwood M.G. Hoehn Corporate Communications NSRB Secretary STARS Regulatory Affairs Mr. John O'Neill (Pillsbury Winthrop Shaw Pittman LLP)
Missouri Public Service Commission
ULNRC-062I8 Attachment I 10 CFR 50.55a Request Number 13R-08 Relief Requested in Accordance with 10 CFR 50.55a(g)(5)(iii)
--Inservice Inspection Impracticality--
- 1. ASME Code Components Affected See Table 1.
2. Applicable Code Edition and Addenda
The third 10-year Inservice Inspection (lSI) interval program was based on the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (B&PV) Code,Section XI, 1998 Edition with the 2000 addenda and was applicable from December 19, 2004 to December 18, 2014. The examination requirements for Class 1 and 2 piping welds at Callaway for the third lSI interval were governed by the Risk-Informed Inservice Inspection (RI-ISI) program. The RI-ISI alternative was accepted by the NRC in a Safety Evaluation dated January 3, 2007 (Accession No. ML063520007). The RI-ISI program was developed in accordance with the Electric Power Research Institute (EPRI) Topical Report TR-112657, Revision B-A, "Revised Risk-Informed Inservice Inspection Evaluation Procedure." The RI-ISI program was also implemented in a manner consistent with ASME Code Case N-578-1, "Risk-Informed Requirements for Class 1, 2 and 3 Piping, Method ".
3. Applicable Code Requirement
100% required examination volume Components identified in this request require examination of essentially 100 percent of the weld length. "Essentially 100 percent" as clarified by ASME Code Case N-460, "Alternative Examination Coverage for Class 1 and Class 2 Welds" is greater than 90 percent coverage of the examination volume, or surface area, as applicable.
This relief request is in accordance with EPRI TR-112657, Revision B-A, Section 6.4, "Relief Requests", that requires generation of a relief request when greater than 90 percent examination coverage is not achieved.
4. Impracticality of Compliance
10 CFR 50.55a(b )(2)(xv)(A) requires that if access is available, the weld shall be scanned in each of the four directions (parallel and perpendicular to the weld). To credit full coverage from a single side for austenitic piping, a procedure must be qualified with flaws on the inaccessible side of the weld. There are currently no qualified single-side examination procedures that demonstrate equivalency to two-side examination procedures on austenitic piping welds. Current technology is not capable of reliably detecting or sizing flaws on the far side of an austenitic weld for configurations common to US nuclear applications.
I of 28
ULNRC-06218 The industry-established Performance Demonstration Initiative (PDI) Program addresses 10 CFR 50.55a(b)(2)(xv)(A) requirements regarding single-side access for piping. PDI Performance Demonstration Qualification Summary (PDQS) certificates for austenitic piping list the limitation that single-side examination is performed on a best-effort basis. The best-effort qualification is provided in place of a complete single-side qualification to demonstrate that the examiner's qualification and the subsequent weld examination is based on application of the best available technology.
When the examination area is limited to one side of an austenitic weld, examination coverage does not comply with 10 CFR 50.55a(b)(2)(xv)(A) and proficiency demonstrations do not comply with 10 CFR 50.55a(b)(2)(xvi)(B). Full coverage credit cannot therefore be claimed.
See Table 2 for a summary of the coverage and limitations. Coverage maps follow Table 2.
5. Burden Caused by Compliance
Due to the component configurations, portions of the code required examination volume could not be completely examined. Performance Demonstration Initiative (POI) qualified procedures were used to perform examinations on these welds, and when applicable, one-sided examination procedure guidance was implemented. The installed components would need to be re-designed in order to obtain coverage greater than 90 percent. Re-design and installation of new components would be impractical due to the personnel exposure and cost that would be incurred in completing the modifications. Callaway requests relief from 100 percent volumetric examination of the piping element butt welds identified in Table 1.
6. Proposed Alternative and Basis for Use
It is proposed that the limited coverage examinations already performed be accepted for meeting Code requirements.
The best available techniques, as qualified through the PDI program including a demonstrated best effort for single-side examination, have been used from the accessible side of the weld.
All of the identified welds are subjected to system pressure tests and no signs of leakage have been identified.
The limited examinations in this request are in accordance with EPRI TR-112657, Revision B-A, Section 3.6.5, "Selection of the Inspection Elements".
7. Duration of Proposed Alternative
The Third 1 0-year Interval.
2 of 28
ULNRC-06218 Weld No.
2-BG-23-FW150 2-BG-21-FOI3 2-BB-02-SOO 1-J 2-BB-02-FO 19 2-BG-21-F012 2-EJ-04-S001-J 2-EJ-01-S010-A 2-BB-08-V121-2 2-BB-04-FO 14 2-BG-02-S046-A 2-BB-04-F004 2-BB-08-FW04 7 2-HB-24-FW002 2-BB-08-FW052-B 2-BG-02-FW040 2-EN-0 1-07006540-01 O-FW04 2-EN-0 1-07006541-01 O-FW04 Exam Category I
Item Number R-A/Rl.ll-2 R-N Rl.l1-2 R-N Rl.l1-2 R-N Rl.l1-2 R-A/ Rl.ll-5 R-NR1.20-4 R-N R1.20-4 R-N Rl.20-4 R-A/ R1.20-4 R-A/ R1.20-4 R-NR1.20-4 R-NR1.20-4 R-N R1.20-4 R-N Rl.20-4 R-N Rl.20-4 R-A/ R1.20-6 R-A/ Rl.20-6 Table 1 Degradation Description Mechanism Elements Subject to Pipe to valve Thennal Fatigue weld Elements Subject to Pipe to valve Thennal Fatigue weld Elements Subject to Elbow to Thennal Fatigue valve weld Elements Subject to Pipe to valve Thennal Fatigue weld Elements Subject to Pipe to valve Thennal Fatig_ue weld Elements not Subject to Pipe to tee a Damage Mechanism weld Elements not Subject to Pipe to flange a Damage Mechanism weld Elements not Subject to Pup piece to a Damage Mechanism valve weld Elements not Subject to Pipe to valve a Damage Mechanism weld Elements not Subject to Pipe to tee a Damage Mechanism weld Elements not Subject to Pipe to valve a Damage Mechanism weld Elements not Subject to Pipe to tee a Damage Mechanism weld Elements not Subject to Pipe to elbow a Damage Mechanism weld Elements not Subject to Pipe to tee a Damage Mechanism weld Elements not Subject to Pipe to valve a Damage Mechanism weld Elements not Subject to Pipe to flange a Damage Mechanism weld Elements not Subject to Pipe to flange a Damage Mechanism weld 3 of 28 Thickness/
System Material Diameter (inches)
Chemical and Volume Austenitic 0.344/2.375 Control System stainless steel Chemical and Volume Austenitic 0.438/3.5 Control System stainless steel Reactor Coolant System Austenitic
- 0. 719/6.625 stainless steel Reactor Coolant System Austenitic 0.438/3.5 stainless steel Chemical and Volume Austenitic 0.438/3.5 Control System stainless steel Residual Heat Removal Austenitic 0.719/6.625 stainless steel Residual Heat Removal Austenitic 0.322/8.625 stainless steel Reactor Coolant System Austenitic 0.344/2.375 stainless steel Reactor Coolant System Austenitic 0.531/4.5 stainless steel Chemical and Volume Austenitic 0.531/4.5 Control System stainless steel Reactor Coolant System Austenitic 0.53114.5 stainless steel Reactor Coolant System Austenitic 0.344/2.375 stainless steel Reactor Coolant System Austenitic 0.344/2.375 stainless steel Reactor Coolant System Austenitic 0.344/2.375 stainless steel Chemical and Volume Austenitic 0.344/2.375 Control System stainless steel Containment Spray Austenitic 0.375/14.0 System stainless steel Containment Spray Austenitic 0.375/14.0 System stainless steel
ULNRC-062I8 Attachment I Weld No.
2-BG-23-FW150 2-BG-21-F013 2-BB-02-SOO 1-J 2-BB-02-FO 19 2-BG-21-F012 2-EJ-04-SOOI-J 2-EJ-01-SOlO-A 2-BB-08-Vl21-2 2-BB-04-F014 2-BG-02-8046-A 2-BB-04-F004 2-BB-08-FW047 2-HB-24-FW002 2-BB-08-FW052-B 2-BG-02-FW040 2-EN-0 1-07006540-0 I O-FW04 2-EN-0 l-0700654I-O 1 O-FW04 Volumetric Coverage Achieved 50%
50%
50%
50%
50%
50%
50%
50%
50%
86.9%
50%
90%
70.9%
90%
50%
50%
50%
Table 2 Limitation 2" Pipe to valve weld with limited access to the valve side. The weld configuration obstructs IOO% of one circumferential and one axial scan.
3" Pipe to valve weld with limited access to the valve side. The weld configuration obstructs I 00% of one circumferential and one axial scan.
6" Elbow to valve weld with limited access to the valve side. The weld configuration obstructs 100% of one circumferential and one axial scan.
3" Pipe to valve weld with limited access to the valve side. The weld configuration obstructs 100% of one circumferential and one axial scan.
3" Pipe to valve weld with limited access to the valve side. The weld configuration obstructs I 00% of one circumferential and one axial scan.
6" Pipe to Tee weld with limited access to the Tee side. The weld configuration obstructs I 00% of one circumferential and one axial scan.
8" Pipe to flange weld with limited access to the flange side. The weld configuration obstructs 100% of one circumferential and one axial scan.
2" Pup piece to Valve weld with limited access to the valve side. The weld configuration obstructs 100%
of one circumferential and one axial scan.
I 4 "Pipe to valve weld with limited access to the valve side. The weld configuration obstructs 100% of one circumferential and one axial scan.
4" Pipe to Tee. Examination limited to one side in the crotch of the Tee.
4" Pipe to valve weld with limited access to the valve side. The weld configuration obstructs 100% of one circumferential and one axial scan.
2" Pipe to Tee. Examination limited to one side in the crotch of the Tee.
2" pipe to elbow. Exam limited to one side only in the crotch of the elbow.
2" Pipe to Tee. Examination limited to one side in the crotch of the Tee 2" Pipe-to-Valve weld with limited access to the valve side. The weld configuration obstructs 100% of on circumferential and one axial scan.
14" pipe to flange with limited access to flange side The weld configuration obstructs 100% of one circumferential scan and one axial scan.
I4" pipe to flange with limited access to flange side. The weld configuration obstructs 100% of one circumferential scan and one axial scan.
4 of 28
ULNRC-06218 Page 5 of28 Of Sumrray Na.: CALR1.11.GIII5 Eauiner: NIA Supplemental Report Repart ND.:
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Appendix VIII Qualified Examination volume on plpe side 50%
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.127" X Circumference 6.74"=.857 cu In Tolll code volume achieved.428 cu in 50% camblned coverage s.w--.. Repad Fie C'Gdll: E110.o1110 B@1 ::" t)uRLti"IGD UAifii#J~ntJ/ ~;If~
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ULNRC-06218 Page 6 of28
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.125 eq In circumference 11"
- 1.37 total code volume aahleved
.686 au In 50% combined coverage Outage No.:
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.188sq In X circumference 11" 2.08.au In Tolal RBISI volume actllaved 1.03 au In 60% combined coverage Radiation lleld:
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Examiner Level II(N)
Klllnjan, Michael W.
Signature Date Signature
.&12212010 Examiner LIVII I Date Slgnat\\1'8 Walker, Scott A.
412212010 Other Level Signature Date Signature Date
,,o AddiUonal* Limitation <edit from Setup>
ULNRC-06218 Page 7 of28 Supplemental Report
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WJIIIIBrenUE Report No.:
UT-10.018 Summary No.: CALR1.11.0040 Examiner..;.;K;;;I ~;.;&.;;;;=--.;;..o.:-'!1"9'---
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(.2. ~ lfoLu.:~WlE tl\\J- ~\\S~ INFofU1~0 \\/ol~A Incomplete examination volume 60% on flange aide or weld. Beat effort examlnaUon performed on flange aide.
Nominal code Required volume total code volume achieved Nominal RBISI volume achieved Total RBIS! volume achieved Supplemental Report Flit Code: E170.0100 Appendix VIII Qualified Inspection volume llmlteUon to 60% on elbow aldaorweld wldlh 1.6" X Depth.. 24 =.38 aq In
.38 aq In X circumference 21.26"
- 8.07 4.36 cu In 60% combined coverage wldlh 2.1 X Depth.. 24 *.504 sq In
.604 aq In X eire. 21.26" = 10.71.cu In 5.38 cu In 60% combined coverage
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I Callaway Elergy Cerder Supplemental Report MISSOURI Component 10:
2-BB-02-F019 3
- Schedule 160 SS pipe to valve Examination limited to one side for 360 degrees due to valve body Valve
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Incomplete examination volume 50% on valve side of weld. Best effort examination performed on Valve side with 70 degree shear Nominal code required volume Total code volume achieved Nominal RBISI volume Total RBIS I volume achieved Llvll L-..r I
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!ilpllln Fie Code: El70.0100, Q170.0002 Width 1.6" X Depth.146" =.234 sq In
.234" x Circumference 8.7 = 2.04 cu in 1.02 cu in 50% combined coverage Width 2.1" X depth.146" =.306 Sq In
.306" x circumference 8.70 = 2.66 cu In 1.33 cu In 50% combined coverage 76° Pipe 71 ~
Appendix VIII qualified examination Volume 50%
Plpeskle DD lllnflwl!r Report No.:
UT-13-13 Date: 04/16/2013 Paae_3_of _!_
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ULNRC-06218 Page 9 of28
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Summary No.: __
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Limitation Record Procedure:
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04a00017 Report No.:
UT-10..005 Page: L1 of ;(f Component ID 2..SG-21*F012
. 3" Schedule 110 Pipe to Yllve Examlnatt~n limited due to flengt configuration RadlaUon fteld:
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Incomplete exemlnallon vol1.111e 50% on ftan;e side of weld. Best effort examlnaUon performed on nan;. aide.
Nominal code Requlrad volume total code volume achieved Nominal RBISI volume achieved Tolel RSISI volume achieved Examiner Level IJ(N)
Signature Klelnjln, Michael w.
Examiner Level 1 Signature Walker, Scott A.
other Level Signature Additional* Lmltatlon <edit from Setup>
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.128eq In circumference 11"
- 1.37
.6111 cu In 50% combined coverage width u* x O.plh.1211*.1a11aq tn
.1118 eq In X clrcumfllrance 11" 2.oe.cu In 1.03 cu In 60% combined coverage Signature Signature 606 Date
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ULNRC-06218 Page 10 of 28 I?AIIBaiUE Swmay No.: CAL.R1.20.1170
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,.Ee Appendix VIII qualified examination coverage Nominal code required volume 1.6" x.240" =.383 sq in
.383 sq In x circumference 17.05 = 6.65 cu In 8E~T ;p,-~ F Total code volume achieved 3.27 cu In 50%
$JIAII J/,;.vlllj Nominal RBISI coverage 2.1" x.240 =.504 sq In
.504 sq In x 17.05= 8.60 cu In Total RBISI volume achieved.4.3 cu in 50%
~11.11 Report F11 Cadll: E170.0100 Supplemental Report Rsport No.:
UT-87-M2 Page:
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ULNRC-06218 Page 11 of 28
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'liAineretiUE SUmmary No.: CALR1.20.G802 Examiner: Hollaway, G. Wade 42 ~
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Data: oii1712GC17 Date: 4/1812807 Dale: YH., /o~
~ -EJ'-P/- So/PH Appendix VIII qualified examination coverage Nominal code required volume 1.1" x.107" =.117 sq In
.117 sq in x circumference 25.41 = 2.97 cu In Total code volume achieved 1.485 cu In 50%
Nominal RBISI coverage 1.6" x.1 07=.171 sq In
.171 sq In x 25.41= 4.35 cu In Total RBISI volume achieved 2.17 cu In 50%
ULNRC-06218 Page 12 of28 ctAIIImiOE SUmmmyNo.: CALR1.20JM&2
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.137 sq in x circumference 5.65 =.n4 cu in
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Nominal RBJSI coverage 1.r x.114=.193 sq In
.193 sq in x 5.65= 1.09 cu in Total RBISI volume achieved.545 cu in 50%
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ULNRC-06218 Page 13 of 28 f}AIReniRUE Stmnaly No.: CALR1.2G.0378 Supplemental Report Report No.:
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ULNRC-06218 Page 14 of28
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7 of 7
Deactlptlon of Umltatlon:
Scan limited to one *Ide 310* due to Valve to Pipe Configuration. Best effort 45* and 10* Shear v1ave utilized from Valve aide.
60% of code required coverage achieved. 45* and 10* Shear ueed for near aide coverage. 7o*L UMd for far akle coverage due to elngle aided exam.
Sketch of Umltation:
2-BB-04-F014 4.o* Schedule 160 Valve to Pipe Examination limited to one side for 360* due to Valve.
Range CoiVt~AjE' -~
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Appendix VIII Qualified Exam Volume 50% on Pipe Side.
Incomplete Exam Volume 50% on Valva side of weld.
Beat Effort Exam performed on valva side with 45° and 70° Shear.
Nominal Code Required Volume:
Weith 1.45" X Depth 0.17 = 0.25" sq In Sq In 0.25" X Clrc. 12.8"
- 3.15 cu in Total Code Volume Achieved:
1.575 cu In 50% combined coverage.
Nominal RBISI Volume
\\Mdth 1.95" X Depth 0.17" =
.331* sq In Sq In.331" X Clrc. 12.6"
- 4.17 cu In Total RBISI Volume Achieved 2.085 cu In 50% combined coverage.
UmltaUona removal requirements:
2*BB-04-R014 nttded removal to perform examination.
Radiation field:
Examiner Level Taylor, Michael W.
Examiner Level Waddel, Joey W.
AddiUonal* Llmltallon <edit from SeiUJP Signature Signature Signature Valve Date Date
ULNRC-06218 Page 15 of28
~~
'llliAIIIele/1 1 Callaway Supplemental Report Component U Z~..mc&""
Report Na.:
UT -U-007 IIISSOUBI
&ergy Caatar P-ee: 2. of _!
Level Sllnature Dab!
Examiner
~~-
l.~on~anM.Brlley II il/8/f~
Examiner IN/A Revfewm' t,f.,-/n Site Review IJeny Do\\aahty I :r--:.wAI~ t.._/-lt.-~
-rNc\\/,.~
ANII Review Dustin R: EtilqiiEitr Comments:
Umftatton due to intradose of elbow bend. 70 RL used for Best Effort Exam.
~
~
,1-8~*o.1-SD'/fl -J R.
f Y.,e. ~ ~.,. ~c J a IJ, $"'~ /.-
a.~-".,"'..
J
~.. ~.s-,, ~
_....,.~rtf E* 1/,&S"I."'
Rle Code: E170.0100, Q170.0002 "Best Effort Exam" achieved 100" 10* RL was used Code Volume
=
wfdth x depth x rnner 1/3 an:umference 1.&* X 0.199" X 11.91" = 3.79 CU. in.
RB-ISI Volume
=
width x depth x Inner 1/3 dn:umference
=
2.1" X 0.199* X 11.91" = 4.98 CU. ln.
Total Code Volume Achreved
=
volume x IJkoverage/100
=
3.79 cu. ln. x 86.9/100 = 3.29 cu. ln.
Total JUI.ISI Volume Achieved
=
volume x "'=overase/100
=
4.98 cu. ln. x 86.9/100
- 4.33 cu. ln.
continued next page
ar.t.
ULNRC-06218 Page 16 of28
~meren 1 Callaway MISSOURI Energv Center 14.137" 14.137" Circumference "North Side" full coverage obtained/
File Code: E170.0100, Q170.0002 "obstructed area*
lookln1 UP Stream E Flow Report II UT *13-007 Page4of4 2.1 "/2'"' 1.05" Up Stream Total Coverage Area 1.0S"x7.4.=7.77" Obstructed Area 14.844"- 7.77"= 7.074" Covered Area 7.074 /14.844" = 47.7" Covarau AX Scan on U.S. side has 47.7" coveraae. Due to limitation In Crotch of Tee bend.
"Actual Coda Required total Coveraae" UP Stream AX scan= 47.7" obtained.
UP Stream Clrc Scan = 100% obtained.
On. Stream AX Scan a100% obtained.
On. Stream Clrc Scan= 100" obtained.
(47.7+100+100+100) /4 = ILI2i Total of 7.4" Obstructed due to lntrados of Tee Bend.
- Non Obstructed Obstructed
~~ Page 17 of 28 WABieren 1 Callaway MISSOURI Energy Center
~ lal!l a.-..v a Eanllner lal!l N/A
'flllnllller
,'NA l.ewll File COde: E170.0100, Q170.0002 Pipe Supplemental Report Component 10:
2-B~
4" Schedule 160 Pipe to Valve Examination limited to one side for 360 degrees due to valve bodv Circ II lillit
~'
'l..,o P..Ll I
I I~
~~~~~~-------
?1 I 14-Coda Valwae ~ I ~
/
- tE-RBISI Volw. __,
~ '
AppendiX VIII Qualified examlnauon volume Is scm on pipe side Nominal Cade required volume Total Code volume achieved Nominal RBISI volume Total RBISI volume achieved Incomplete examination volume Is 5'"' on valve side of weld. Best effort examlnaUon performed on valve side with 70 desree RL Width 1.s" x Depth o.1r. o.z&ss sq 1n 0.2655" X Circumference 11.36"
- 3.02 cu in 1.51 cu In 5'"' combined coverase Width 2" X Depth 0.177 = 0354 sq In 0.354" X Circumference 11.36"
- 4.02 cu In 2.01 cu In sow. combined c:overase Dial.....
&anion FclrsiB Date 151111 Rl!d!w Dau&htY Valve Dille IANII Dllllln lt. ~
Slpature
');:~-t..~ ~1l.lf1' Report No.:
UT-13-025 Date: 04/26/2013 Page_.!__ of_.!__
~l,s-/A.S
~,-.6. r;
.r-~-l'j
ULNRC-06218 Page 18 of28
~ft..
'WAIIIeteB J Callaway Supplemental Report Component 112al.oa.PND47 ReportNo.;
UT-13-420 MISSDURI Enetgv Cellblr hp:_!of..!.
l.eWI Slpalure Dolte Examiner l.eWI Sf&nature Date
_,;,.;,~
Ellamlner IN/A Reviewer p.... Forster Ill rl& 6 ~
IV-" AJJ Site Revrew ~errv Dolllhlv
~~
I I jt,-/t.,
1.:;-....,.,N,~ 9
_J
- ANURI!vlew..... A Dnihllf&\\'
_.., W'L'-=j 7/WIIII!I Comments:
Exam limited due to intradose of Tee bend.
(!T A=:,.s-.u-IS**.,,...
'*o.'IU..
'1:::1-..,.,,..
&= ** 3.,.,.
~
~
,;t... 5SS-fi/-FWD(7
.../_..
7et.
&~
~
- D*..
r.,a
.s*
Eltra CCM!r.lllawlth 70 RL T
File Code: E170.0100, Ql7D.0002 Upstream Axial Coverage:
Upstream volume =width x depth x drcumference
= 0. 75 X 0.137 X 8.0 : 0.822 CU. ln.
Extra Coverage = [proftle area] x [obstructed cfrcumference]
= [(0.1 X 0.137) + (0,5)(0.25 X 0.137)1 X (3.2) = 0.0986 CU. ln.
Extra Coverage "
= (Extra Coverage/Upstream Volume) x 100
= (0.0986/0.822)x100 = 12.0" Best Effort%
=% Extra +% Obtained (from pageS)
= 12.0 + 60.0 = 72.0 "
Total Coverage:
Best Effort Total QuaUfled Total Total Code Volume
= (72.0 + 100 + 100 + 100)/4 = 93.0%
= (60.0 + 100 + 100 + 100)/4
- 90.0%
=width x depth x drcumference
= 1 X 0.137 X 8.0 = LlO cu. ln.
Total RB-151 Volume
- width x depth x drcumference 90.0%
0.991n.3 93.0%
1.021n.1
= 1.5 x 0.137 x 8.0 = L64 cu. ln.
1.481n.
3 153ln.3 Continued next page
ULNRC-06218 Page 19 of 28
~
vJAmemn 1 Callaway MISSOURI Enargy Canter 4.8* Total Full Coverage U.S. AX sc:an 8" Circumference Mesured Full Covera1 area Top Dead Center Ale Code: E170.010D, Ql7D.D002 looking ON Stream
( Flow Report II UT-13..020 PageS of5 1.5" /2. 0.75" 0.7S"x 8"= 6" Up Stream Total Coverage Area 0.7S"x 3.2""' 2.4" Obstructed Area 6" - 2.4"* 3.6" Covered Area 3.6"/6"
- 60" Cgyera11 AX Stan on U.S. side has 60% Coverage. Due to limitalon in Crotch of Tee bend.
"Actual Code Required total Coverage" UP Stream AX Scan
- 60" obtained.
UP Stream Ore Scan.. 100% obtained.
Dn. Stream AX Stan = 100" obtained.
Dn. Stream Cl~ Scan
- 10096 obtained.
(60+100+100+100) /4.-
Total of 4.8" Obstructed due to lntrados ofTee Bend.
- Non Obstructed Obstructed
~~ Page 20 of 28
~~
'JfHAIIIeren 1 Callaway MISSOURI Energy Center Supplemental Report Component n 2-HB-24-FW002 Report No.:
UT-~18 Pap: _!of...!
l.ellel Level Signature/~
f.,o,uo,M. Briley II
. _ ~
Date Reviewer lc;onion Forster ID
~~--------_.~~~~~~~~--~
Examiner Examiner IN/A Comments:
Sketch or Photo:
File Code: E170.0100, Q170.0002
(-17-13 Site Review IJetrv DouihtY 7
-v ANII Review IDusti'l R. Daugherty Exam Umlted due to fntradose of Elbow bend.
~-118-,21/-f',.l~...t *.
s 4
£/h,.;
C A-P,pc..
l liS" f'i
- l1
- o 3 D.1. "'*'--* = II, 7S" Ill ti,IZ r,_,.,.,..It 7.i~ rz "* 7.tff...
- " #.f;/1111
£1ti,_ e**'"'JC.,. o.l llo..IZ.9 t: tl.oi&B
- .'l.lfe,IZf= o.oz S't.::z *0.4111! f
- 11. 11/Z.V~ o.ot&.V= ***z 5"4
- -*~4 ~~~,... 4,,.,.t-1~.f-D.tJ*rt.
O.Jlon.-:- 11.7.17'"" fJ.I?tf'(
.lZ. 1 Y..,. 17. fl'ff ~ = s-o.*n'/
( S11. 'n'/.,~z. f.,., **,...,) +'I. ?o. '2'1 Y.
~ 541SI!rf ~
Jf,.:,J.. -J;J;.{ *.fl ~.tzs-x J-= 6.3~1' 8*t~.lfS"..
ec().l/t*'
I:>* D.3'11'..
£.:: o.S.,,..
(
- ;.2tr.n.,.,. -.s ~J.
t./
r,jJ_ c.
- I ~ 1.1.1'10:.
- JZf.r 7. r,':: I. 7 7S" C*.* ;,
- R&.~ U-£.: /.'r~ *.,zr~..,*r~.,,.. ~ 1.1/S'f M* ;4
- T.J.-.f Uc vf..-e Jf/.;~./- 44.f!i Y.
-r.~r JfB.:Csf t.J.,.. ~ 7 j,."e;:L 2 {,4. '($' Y.
continued next page
ULNRC-06218 Page 21 of28
~'t.
iliAmeren 1 Callaway MISSOURI Energv Center Pipe Side 7.6
7.6" Circumference Measured 2.5" of Total Full Coverage Total of 5.1 Obstructed due to lntradosofEibow./
lntrados of Elbow Examiner : Jordon Briley Reviewer : Gordon Forster Looking ON Stream Site Review : j!Je~!JD;!!O!!:U!S!!Jh ~.::tl.~~;=::~::::J.:.:!'
AN II Review: Dustin Daugherty File Code: E170.0100, Q170.0002 Report#
UT-13-018 Page 5 ofS Flow
~
1.5"/2 = 0.75" 0.75"x 7.6"* 5.7" Total D.S. Coverage Area 0.75"x 5.1"* 3.825" Obstructed Area 5.7"- 3.825"= 1.875" Covered Area 1.875" I 5.7" = 3z.926 coverage Both Scans on D.S. side have 32.9%
Coverage. Due to llmltalon of lntrados.
"Actual Code Required total Coverage
UP Stream AX Scan = 100% obtained.
UP Stream Clrc Scan = 100" obtained.
On. Stream AX Scan
- 32.9% obtained.
On. Stream Clrc Scan= 32.9% obtained.
(100+100+32.9+32.9) /4 = W52i "2-HB*24-FW002" Total of 2.5" Obtained
- Non Obstructed Obstructed
~~
Page 22 of 28
~;...o i!i6Ameren 1 Callaway MISSOURI Energy Center Supplemental Report Component 112-BB-DB-FW052-B Level Signature Report No.:
UT-13-021 Page: __.!.of_!
Date S/3--/
,no Reviewer
(§c,_nton Forster 111 4 J,. ~
- ;&t -
!Jordon M. Briley II t(, 11-13 Examiner IN/A Site Review !Jerry Doughty
!l,
~'=?
¥~
")=.... l~
- ~uo:.-
r* c.. r' ANII Review I Dustin R. Daugherty
.s-** ~ *13 Examiner Comments:
Sketch or Photo:
w A= ().373..
l!>, o.lL '7 **
~
c: D. r(,tt
i> :1: /}. -/!i"..
£::o.'f7t
Exam limited due to lntrados ofTee bend.
f
~
- t-fS 8-~ct-~w'b 5"'.-R -8 JI.S. \\/./..... ~ :. o *., s; If D-13 -r
- D./oz.? lf'i* fl. 'i:1
(
@)
r J.
/1 **
o.l.t o.IJ7:: *.o1~?
c;p,A l*l.-rtl'o{ I~
\\J
- .Z$'.,fo,JJ7=o.0311/-:Z =II.OI*
o.o*3'1.,. /1,017/c o.o3oJ o **.,.r ~3./".lsi,..... IJ* o.o.,s-s-
- o. DfS'ff.,;. D. 'i.Z:l w o.11 ~zr'Y....._£ A
Go¥. ~ 1/. t..t!i /... ""¥. 6 :t F>:
7c.,;2..; */.
(71,1.2S"# /tlo ~ IOo?l**)fr{:: ~
~
3e~+ Eftrf ~~.lf
.... :,.J,._f./.(./} Cf.t. 1ot"~
A :1. J s--.. -.. 7D * -.$ IJUJ.
A J.,/ /.
J
I..*
It V* -"-&'II tfiJ.I$7 c()./J7J< fa /,O'fi& c...,...
R'S. ~s~ v./_.. = J.5""";c (J.IJ7.. 60-~4/rr..c,*~ '*,.,~ c *.* -,..
-r:1-.J t... k /.L c. At=i. *~.,J ~ 1 ox
-t:;.~( ~8-~~.,t./,._e AJ;~.,J:_1t;X File Code: El1q.0100, 0170.0002
~~ Page 23 of 28 "W Ameren 1 Callaway MISSOURI Energy Center Pipe Side sn 8
11 Circumference Measured 4.8" Total Full Coverage Full Coverag area Top Dead Center/
Examiner : Jordon Briley Reviewer : Gordon Forster Site Review : Jer Dou h File Code: E170.0100, Q170.0002 Side Report It UT-13-o21 Page 5 of5 Flow
)
2.4" 1.5/2 = 0.75 11 0.75"x 8"= 6" Up Stream Total Coverage Area 0.75"x 3.2"= 2.4" Obstructed Area 6" - 2.4"= 3.6" Covered Area 3.6" I 6" = 6096 Coverase AX Scan on D.S. side has 60% Coverage. Due 3.2" to llmltalon In Crotch ofTee bend.
2.4" Looking ON Stream
- 11-JJ r/z/113
.. -.t!.. * /1 "Actual Code Required total Coverage" UP Stream AX Scan= 100% obtained.
UP Stream Circ Scan = 100% obtained.
On. Stream AX Scan= 60% obtained.
On. Stream Clrc Scan = 100% obtained.
(100+100+60+100) /4 =11m "2*BB..Q8*FWQS2-B" Total of 4.8" Obstructed due to lntrados of Tee Bend.
- Non Obstructed Obstructed
ULNRC-06218 Page 24 of28
.-AinenNJUE Examiner: NIA
>~
Olher: Charbon Commanls: Weld Proftle..,d san Limitation Supplemental Report Level: II-POI Level:..J:H!_
Level:...ll=1RL Repoft No.:
UT~
Page:
3 of 4 -
Scan lmlted ta one side only due to valve, uamllldon volume consldentd 50% CCIInplete In accordance with APP. VII requlrwmenls. Best effort examblltllan performed on the,_ side of the weld using refracted L wave.
IWIImnelt UT Report 1'8 UT -ctfi.083. UT..o&-064. UT -os-G65. and UT -os-o&6.
Sketch or Photo:
2-86*02 -FWO'fO VALUE FLOW Appendix VIII qualified examination volume 50%
complete on pipe side Nominal code required volume 1.2* x.114" =.1311sq in.x circumference 5.65 =.774 cu in total code volume achieved.387 cu In 50%
Nominal risk based coverage 1.7 x.114 =.193
.193* x 5.65 =.109 cu in
-rE E total RBISI volume achieved.545 cu In 50%
"?o11L J 8EtT f.f<<JKI
,l(J * '1'1, ",3$', 5'
- 3'-I "- Appendix VIII qualified examination volume 50%
~~~*"~
SUpplanattal Raport Fie Coda: E170.0100 VDWM£ R1tfC fttfJ.i'.
VIJJ.IJME.
ULNRC-06218 Page 25 of28 Summary No.: CAL.R1.20.2048 Examiner: Fo,.ter, Gordon A.
Examiner:
""IH Other:
,.../IJ Comments:
Sketch or Photo:
Supplemenl*l Report File Cocl1: E170.0100 2-EN-01-7006540-010-FW04 Supplemental Report t
~
\\.
I
- * ~::-.-.-.
.. --J:-:,-:-z----
1 rs" *1..,
. 'I
. If.
ULNRC-06218 Page 26 of28
.,~
- AmerenUE Site/Unit CNP I
2 Limitation Record Procedure:
QCP.ZZ*0502B
..;...;. __ Outage No.:
Cycle16
_....;.:r...;.;....;... __
Summary No.:
CALR1.2G.2048 Procedure Rev.:
8 Report No.:
UT..OI-002
~--~~~~----
~-----
Workscope~
PSI Work Order No.:
07008540 Page:
a ol e
DescrlpUon of UmltaUon:
Scan limited to one lfde 310 Degree* due to Flange. Beat effort 70 ahear wave utilized from pipe and flange 1lde performed.
50% of code requlered coverage achieved.
Sketch of LlmltaUon:
2-EN-0 1-07006540-1 O-FW04 14" Schdule 40 Pipe to Flange Examination limited to one side for 360 degrees due to Flange.
~--:~.,()0
---~----:::P-1-;;~.;;:-
Pipe Flange Appendix VIII Qualified Examination Volume SO%
on pipe side Nominal Code required volume Total code volume achieved Nominal RBISI Volume Ll It tl Total RBISI Volume achieved m a ona1 Radiation field:
Examiner Le11111 111 Fo111ter, Gordon A.
Examiner Le11111 Other Level Signature Additional
- Llmltallon <tldlt from Setup:.
- fS"'
,!9"
. J""
< rtUJ" "-q>
~oersr ~
.. ~me >
Incomplete examination volume 50% on flange side of weld. Best effort examination performed on flange side wjth 70 degree shear Width I" X Depth.13"=.13 sq in Sq in.13" X Circumference 42.4"= 5.5 cu in 2.756 cu in 50% combined coverage Width 1.5" X depth.13=.195 sq in
.195" X circumference 42.4 =8.27 cu in 4.1 cu in SO% combined coverage Dale
ULNRC-06218 Page 27 of28
~~
WAmerenUE Summary No.: CALR1.20.2083 2 -EN-01-07006541-010-FW04 Supplemental Report J1 u,ob
,{tJof; Reviewer:
~...
Examiner: Forster, Gordon A. 1-r'mf!j:) Level:..J!!.....
t-1/.
ZU$'/d Examiner:
A Level:
Site Review:
Other:
"'/,4 Level:
~------------------------
ANII Review:
Comments:
Sketch or Photo:
\\
I
--~*f.
'II",;t(
Supplemental Report FHe Code: E170.0100 Report No.:
UT-08-004 Page:
6 of 6
Date:,r'-ll-oY Date:
!t:l~aa Date:
'/!'~'
ULNRC-06218 Page 28 of28 SlteiUnlt CNP I
2 Limitation Record Procedure:
QCP.ZZ..OII02S
--~~--~----~---
Outage No.:
Cycle11 Procedure Rev.:
8 Summary No.:
CAL.R1.20.2D83
~~~~~~---
Report No.:
UT..OB-G04 Workscope:
PSI Work Order No.:
070081141 Page:
5 of 8
Oescr1ptlon of Limitation:
f,5
.dJ' _,,6
.~~,~
CJ)._
- ~ 8N J)( n700654J 19 FWG+
14, Schdutc 40 Pipe to Flange Sketch of Limitation:
Examination limited to one side for 360 degrees due to Flange.
Flange Appendix VW Qualified Examination Volume 50%
on pipe side Nominal Code required volume Total code volume achieved Nominal RBISI Volume Total RBIS I Volume achieved Umltatfona removal requirements:
NIA Radiation field:
Examiner Level 01 Forster, Gordon A.
Examiner Level Level Signature AddiUonal-UmllaUon <ldlt from Setup>
Pipe Incomplete examination volume SO% on flange side of weld. Best effort examination performed on
,flange side with 70 degree shear Width 1, X Depth.13-.13 sq in Sq in.13" X Circumference 42.4":::: 5.5 cu in 2.756 cu in 50% combined coverage Width 1.5.. X depth. 1 3=.195 sq in
.195, X circumference 42.4 *8.27 cu in 4.1 cu in 50% combined coverage Date
ULNRC-06218 10 CFR 50.55a Request Number 13R-09 Relief Requested in Accordance with 10 CFR 50.55a(g)(5)(iii)
--Inservice Inspection Impracticality--
- 1. ASME Code Components Affected Weld Number Description EBBOlA-RSG-SCOOl Steam Generator Bottom Head to Tubesheet EBBOlB-RSG-SCOOl Steam Generator Bottom Head to Tubesheet EBBOlC-RSG-SCOOl Steam Generator Bottom Head to Tubesheet EBB01D-RSG-SC001 Steam Generator Bottom Head to Tubesheet
2. Applicable Code Edition and Addenda
ASME Code Section XI - 1998 Edition with the 2000 Addenda
3. Applicable Code Requirement
Exam Category B-B B-B B-B B-B Table IWB-2500-1 requires volumetric examination ofthe subject welds.
Item No.
B2.40 B2.40 B2.40 B2.40 Note 4 of the table requires examination of essentially 100% of the weld length.
Since this is the first Inspection Interval for the new steam generators, Note 1, allowing examination of only one steam generator, does not apply.
"Essentially 100 percent" as clarified by ASME Code Case N-460, "Alternative Examination Coverage for Class 1 and Class 2 Welds", is greater than 90 percent coverage of the examination volume, or surface area, as applicable.
4. Impracticality of Compliance
The steam generator vertical supports block access to approximately 22.5 percent of the required examination area. Removal of the supports to allow access for examination is considered impractical. Each steam generator has four supports and the supports would have to be removed one at a time. Analyses would have to be performed to see if temporary supports would be required for those removed in order to limit stresses on the steam generator, piping, and remaining supports. Each support has an approximately 15-foot vertical column and an approximately 6-foot column adapter that would have to be moved. These are large, heavy pieces that would require temporary rigging as no cranes or hoists are present in the area. These supports are located in a congested area of containment, and consequently, manipulating these supports would pose safety hazards to personnel and equipment.
Work on the vertical supports would also require checking and possibly re-shimming
Page1of8 ----------------------------
ULNRC-06218 the lateral supports on the steam generators. The dose received during steam generator replacement to re-attach the support columns, shim the lower lateral supports, and remove all temporary clamps and restraints accumulated over 29 Rem.
The pre-service examinations were performed during steam generator replacement prior to installation, so the supports were not obstructions.
5. Burden Caused by Compliance
A design modification would be necessary to allow complete examination coverage without removal of supports. The supports, and likely the steam generators, would require modification, and the cost of such a modification would be a considerable burden.
6. Proposed Alternative and Basis for Use
It is proposed that the examinations performed with the coverage obtained be accepted for meeting Code requirements. No recordable indications were found in any of the subject examinations.
7. Duration of Proposed Alternative
The third 1 0-year Interval.
Page2of8 -----------------------------
ULNRC-06218 Attac:hment2 Page 3 ofB
~~
"~~AmemnUE Supplemental Report Report No.: _....;;UT;...:...;;*O;.;;;B....;;-0.;;.31.;..__
Page:
3 of 5
Summary No.: CALB2.40.DOOS Examiner: Cochran, Lonnie o& a::Level: III*PDI Examiner: N/A Level:
NIA.
...,.war. -
Date:.o;A:I<<'
SlteRevlaw: ~
~
Date: tf"lt*Q8 ANII Revlew:~l Dele: 7-7.. D?
Other:...;N.;;./A.;.;.... ________ Level:
NIA.
Comments:
EBBD1A-RSG*SC001 Drawings not to scale.
Sketch or Photo*
18'-
20'~0 0
-2'
-36' c::J I
I 27' 21' Supports abmuct scm path 24.0" at four locdona around steam Generltor.
Obstruction lacldlone _.at stlmped Locdon.: 1*'11'1 18-20". Z1*2t".ad 38-2'.
I*
I fUbo sbijtl I SUpport I 13.lr" lWetd Centerline! - - - - - - - -
I--
~4" -t Supplemental Report Flle Code E170.01DO ConUnued next page
ULNRC-06218 AHachmenl2 Page4of8
.trt.
- AmsrenUE Supplemental Report Report No.:
UT..08.031 Page:
4 of 5
Summary No.: CAL.B2.4D.OOD5 Examiner: Cochran, Lonnie D./JO.a;:i:evel: ~
Examiner: N/A Level:
Date: u,l'f/1(
Slle -: ~
t1M Dato: JNI*t//1.
ANII Revlew:'l:O'~'f3 Date:
z-z-o T Comments: 60"L LlmltaUon Description far EBBD1A*RSG..SC001.
STEP 1 CALCULATE REQUIRED EXAM VOLUME Vessel Circumference= 3.14 X 136" Outside Diameter= 427.04" Exam Surface Length Exam Thickness Circumference Exam Volume 6.68" 5.40" X427.04" 15404.2 STEP l CALCULATE EXAM VOLUME W/ TRANSDUCER HEAD SIDE OF WELD (60°) TRANSVERSE TO WELD.
Length No Coverage Width No Coverage Thickness No Coverage
~olwne WINo Coverage Total Volume WINo Coverage Total Exam Volume 96.0" 6.68" X 5.40" 3462.9 3462.9
/15404.2 22.5%
100%- 22.5% Percent Volume Not Examined= 77.5% Volume Examined.
STEP 3 CALCULATE EXAM VOLUME W/ TRANSDUCER TUBE SHEET SIDE OF WELD (60°) TRANSVERSE TO WELD.
Length No Coverage Width No Coverage Thickness No Coverage Volume WINo Coverage Total Volwne WINo Coverage Total Exam Volume 96.0" 6.68" X 5.40" 3462.9 3462.9
/15404.2 22.5%
100%- 22.5% Percent Volume Not Examined= 77.5% Volume Enmincd.
Supplemental Report FlleCocfe: E170.0100 Continued next page
ULNRC-06218 Pege5of8 11~
- 'IHllnUE Supplemental Report Report No.: _.;..UT;...*D;.:.S-0...:;.3:...;.1_
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Summery No.: CAL.B2.40.0006 Examiner: Cochl'ln, Lonnie c.&. z:e::ctvel: 111-PDI Examiner: N/A Level: ~
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Date:,.., ** 0 ANIIRevlew: _
___ J Date: ?-7-oy Comments: 60"L Limitation Desortptlon for EBB01A-RSG.SC001.
STEP 4 CALCULATE EXAM VOLUME WI TRANSDUCER CW DIRECTION WITH (60°) PARALLEL WITH WELD.
Length No Coverage Width No Coverage Thickness No Coverage Volwne WINo Coverage 96.0, 6.68" XS.40" 3462.9 Total Volume WINo Coverage Total Exam Volume 3462.9
/15404.2 22.5%
100%
- 22.5% Percent Volume Not Examined"" 77.5% Volume Examlaed.
STEP:S CALCULATE EXAM VOLUME W/ TRANSDUCER CCW DIRECTION WITH (60°) PARALLEL WITH WELD.
Length No Coverage Width No Cover11e Thickness No Coverage Volume W/No*Coverage 96.0" 6.68" X 5.40, 3462.9 Total Volume WINo Coverage 3462.9 Total Exam Volume
/15404.2 22.5%
1000/a-22.5% Percent Volume Not Examined= 77.5% Volume Examined.
STEP 6 CALCULATE PERCENT OF TOTAL VOLUME EXAMINED.
60° Head Side 60° Tube Sheet Side 60° CW Direction 60° CCW Direction Supplamantlll Report Fila CDda: 1!170.0100 77.5%
77.5%
77.5%
+77.5%
310% 14 = 77.S% Total Volume Eumined.
ULNRC-06218 Alladvnenl2
~~
Page6of8
"+~AIIItJml 1 Callaway MISSDURI Eaergy Center Supplemental Report Cotnponent II E88018-RSG*.saJD1 Level Level Signature
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ULNRC-06218 Allachment 2
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Page7of8 iii AlllllrBn J Callaway MISSOURI
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ULNRC-06218 10 CFR 50.55a Request Number 13R-11 Relief Requested in Accordance with 10 CFR 50.55a(g)(5)(iii)
--Inservice Inspection Impracticality--
Category Number Coverage Limitation Achieved 2-T8803-108-A--W 8-D 83.110 75.65%
Pressurizer Safety nozzle A limited due to nozzle configuration.
2-T8803-l 08-8-W 8-D 83.110 75.65%
Pressurizer Safety nozzle 8 limited due to nozzle configuration.
2-T8803-l 08-C-W 8-D 83.110 75.65%
Pressurizer Safety nozzle C limited due to nozzle configuration.
2-T8803-l 08-D-W 8-D 83.110 75.65%
Pressurizer Relief nozzle D limited due to nozzle configuration.
2-T8803-l OC-W 8-D 83.110 82.7%
Pressurizer Spray nozzle limited due to nozzle configuration.
2-T8803-IOA-W 8-D 83.110 54.8%
Pressurizer Surge nozzle limited due to nozzle configuration and adjacent heater penetrations.
2. Applicable Code Edition and Addenda
ASME Section XI, 1998 Edition through 2000 Addenda.
3. Applicable Code Requirement
IWB-2412, Inspection Program B, requires volumetric examination of essentially 100% of each pressure-retaining weld identified in Table IWB-2500-1 once each ten-year interval. The Callaway Unit 1 third 1 0-year Inservice Inspection (lSI) interval was applicable from 12/19/2004 through 12/18/2014. Table IWB-2500-1, Examination Category B-D, requires volumetric examination ofltem B3.110 (Pressurizer Nozzle-to-Vessel welds) as shown in Figures IWB-2500-7(a) through (d). Callaway's nozzle configuration corresponds to Figure IWB-2500-7(b) which shows the examination volume to include the actual circumferential weld and the adjacent base metal on either side of the weld extending to a distance of one-half the thickness of the wall from the extremities ofthe weld crown.
I of 36
ULNRC-06218 "Essentially 100 percent" as clarified by ASME Code Case N-460, "Alternative Examination Coverage for Class 1 and Class 2 Welds", is greater than 90 percent coverage of the examination volwne, or surface area, as applicable. NRC has accepted this clarification as stated in NRC Information Notice 98-42, "Implementation of 1 OCFR50.55a(g) Inservice Inspection Requirements."
4. Impracticality of Compliance
In accordance with 10CFR50.55a(g)(5)(iii), relief is requested for the Pressurizer Nozzle-to-Vessel Welds, ASME Section Xl Category B-D, Item Number B3.110 from the "essentially 100 percent" volwnetric examination coverage requirements.
Callaway was limited in the amount of Code coverage obtainable. The essentially100 percent code coverage (greater than 90 percent) requirement is considered impractical due to the pressurizer shell-to-nozzle welds configuration. Ultrasonic examinations of the pressurizer nozzle-to-head welds are limited in coverage due to the configuration of the nozzle. Ultrasonic examination of the pressurizer surge nozzle-to-shell weld is limited due to interference with the pressurizer heater penetrations.
Examination was performed to the extent practical using qualified equipment and personnel.
5. Burden Caused by Compliance
The design configuration of the nozzles and surrounding components restricts complete access to the subject welds, making the Code required examination coverage impractical. Plant modifications or replacements with components designed to allow for complete coverage would be needed in order to meet the Code requirements. The cost and dose of such modifications or replacements would be a considerable burden.
6. Proposed Alternative and Basis for Use
Proposed Alternative:
The following alternatives are proposed in lieu of the required examination coverage of essentially 100 percent:
- 1. Ultrasonic testing (UT) of the subject component welds was performed to the maximum extent practical during the third ten-year interval.
- 2. Pressure test VT-2 visual examinations were performed, as required by Code Category BP, during the third ten-year interval. No evidence of leakage was identified for this component.
2 of 36
ULNRC-06218 Basis for Use:
The basis for use of this alternative is that it provides the best examination coverage practical within the limitations of the current configuration. Based on the percentage of the examination volume completed and the lack of any indications identified, there is a high level of confidence in the continued structural integrity of the weld.
7. Duration of Proposed Alternative
The third 1 0-year Interval.
3 of 36
.-~u£f36 SUmmary No.: CALB3.111.0002
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"~'~Ameren UE ULNRC-06218 page 16 Of 36 Summary No.: CAL.B3.110.0008 Examiner: Charbonnet, Sha Examiner: N/A 2-TBB03-1 OC-W Supplemental Report Report No.:
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2 of 10 Reviewer: Gordon Forster. /J.,k&fi~ate: (f)/rt/.11£:
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Step 1 Step2 Step3 1
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Supplemental Report FOe Code: E170.0100 Level: II*PDI ANII Review: Fred C. Ouyang ate: /D/19/rJ$"
class 1 and 2 Ptessy te Vessel Coverage Calculation Calculate Circumference <where reaulred)
Diameter=
Circumference Calculate Total Required Volume WldthofWRV Thickness of WRV ln2 required Total Required Volume Qalculate Total Volume with No 0° Obstruction #1 length of obstructed area fn2 with no coverage volume obstructed Obstruction #2 length of obstructed area ln2 with no coverage volume obstructed Obstruction #3 length of obstructed area ln2 with no coverage volume obstructed Total obstructed from 0° 15.916 n 50.002.
4.950 II 3,160 a 15.642 sq. ln.
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Summary No.: CALB3.110.0006 I
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Step4 Step 5 ANII Review: Fred C. Ouyan Class 1 and 2 Pressure Vessel Coverage Calculation Calculate Total Volume with No 4r'A?Cial. Direction A 1
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1 2
3 Obstruction #1 length of obstructed area.
ln2 with no coverage volume obstructed Obstruction #2 length of obstructed area in2 with no coverage volume obstructed Obstruction #3 length of obstructed area in2 with no coverage volume obstructed Total obstructed from 45° Axial, Direction A Calculate Total Volume with No 4[lA1dal. Direction B Obstruction #1 length of obstructed area ln2 with no coverage volume obstructed Obstruction #2 length of obstructed area ln2 with no coverage volume obstructed Obstruction #3 length of obstructed area in2 with no coverage volume obstructed Total obstructed from 45° Axial, Direction B Supplemental Report FOe COde: E170.0100 50.000.
0.060 sq. ln.
3.000 cu. ln.
sq. ln.
0.000 cu. ln.
sq. in.
0.000 cu. ln.
0.4%
50.000 a 5.700 sq. in.
285.000 cu. ln.
a sq. ln.
0.000 cu. ln.
sq. ln.
0.000 cu. ln.
~rt.
WAmerenUE Examiner: NJA Comments:
StepS Step7 ULNRC-06218 page 18 Of36 2-TBB03-10C-W Supplemental Report Class 1 and 2 Ptessute Vessel Coverage Calculation Calculate Total Volume wllh No 60° Axial. Direction A 1
2 3
1 2
3 Obstruction #1 length of obstructed area ln2 with no coverage volume obstructed Obstruction #2 length of obstructed area ln2 with no coverage volume obstructed Obstruction #3 length of obstructed area ln2 with no coverage volume obstructed Total obstructed from S0° Axial, Direction A Calculate Total Volume with No 60° Axial. Direction B Obstruction #1 length of obstructed area ln2 with no coverage volume obstructed Obstruction #2 length of obstructed area ln2 with no coverage volume obstructed Obstruction #3 length of obstructed area ln2 with no coverage volume obstructed Report No.:
UT.05-084
---~-
Page:
, 4 of 10 50.000.
0.070 sq. ln.
3.500 cu. ln.
sq. ln.
0.000 cu. ln.
sq. ln.
0.000 cu. ln.
~
50.000.
7.900 sq. ln.
395.000 cu. ln.
sq. ln.
0.000 cu. ln.
sq. ln.
0.000 cu. ln.
Total obstructed from S0° Axial, Direction 8 60.5%
Supplemental Report File Code: E170.0100
ULNRC-06218 page 19 Of36 Srt..
- AmerenUE 2-TBB03-10C-W Supplemental Report Report No.:
UT-G5-084 Page:
5 of 10 Examiner: Charbonnet, Sha Reviewer: Gordon ForJrer Examiner: NIA
~~--~~-
Level:
NIA Site Review: !B.:!:L:!. M~on~tg~o~m~e ~~~~~
Comments:
....;...._.....;...=-_ Level: 11-PDI AN II Review: ;_:Fred:.:::..:.C:...:. O:.:u:!ya=n~g:::;;;J16::::...WiJIIIII~
Step 8 1
2 3
StepS 1
2 3
Class 1 and 2 Ptessyte vessel Coverage Calculation Calculate Total Volume with No W Clrc. Direction A Obstruction # 1 length of obstructed area ln2 with no coverage volume obstructed Obstruction #2 length of obstructed area ln2 with no coverage volume obstructed Obstruction #3 length of obstructed area ln2 with no coverage volume obstructed Total obstructed from 45° Clrc, Direction A Calculate Total Volume with No gsa Clrc. Direction B Obstruction #1 length of obstructed area ln2 with no coverage volume obstructed Obstruction #2 length of obstructed area ln2 with no coverage volume obstructed Obstruction #3 length of obstructed area ln2 with no coverage volume obstructed 50.000.
2.120 sq. ln.
106.000 cu. ln.
sq. ln.
0.000 cu. ln.
sq. ln.
0.000 cu. ln.
13.6%
50.000 a 2.120 sq. ln.
106.000 cu. ln.
sq. ln.
0.000 cu. ln.
sq. ln.
0.000 cu. ln.
Total obstructed from 45° Clrc, Direction B 13.SOk Supplemental Report File Code: E170.0100
ttfl.
- Ameren UE ULNRC-06218 page 20 Of36 2-TBB03-1 OC-W Supplemental Report Report No.:
UT -o&-084 Page:
6 of 10 Summary No.: CALB3.110.0006 Examiner: Charbonnet, Shan Examiner: NIA Level: NIA
~---Tr~
Comments:
Step 10 1
2 3
Step 11 1
2 3
Class 1 and 2 Ptessyte Vessel Covetage Calcylatjon Calculate Total Volume with No 60° Clrc. Direction A Obstruction #1 length of obstructed area
- 50.000
- ln2 wlth no coverage*
2.120 sq. ln.
volume obstructed 106.000 cu. ln.
Obstruction #2 length of obstructed area ln2 with no coverage volume obstructed Obstruction #3 length of obstructed area ln2 with no coverage volume obstructed Total obstructed from 60° Clrc, Direction A Calculate Total Volume with No 60° Clrc. DlrJctlon B Obstruction #1 length of obstructed area ln2 with no coverage volume obstructed Obstruction #2 length of obstructed area
'* a
,
- sq. ln.
o.ooo cu. ln.
. sq. ln.
0.000 cu. ln.
~
. 50.000.
2.120 sq. ln.
106.000 cu. ln.
ln2 with no coverage sq. ln.
volume obstructed 0.000 cu. ln.
Obstructlo~ #3 length of obstructed area ln2 with no coverage sq. ln.
volume obstructed 0.000 cu. ln.
Total obstructed from 60° Clrc, Direction B Supplemental Report File Code: E170.D100
~~
- AmerenUE Comments:
ULNRC-06218 page 21 Of36 2-TBB03-1 OC-W Supplemental Report II*PDI Level:
NIA Class 1 and 2 Pressu te Vessel Coverage Calculation Total Volume Achieved per scan:
Achieved volume 0° Achieved volume 45° Axial, Direction A Achieved volume ~Axial, Direction B Achieved volume 60° Axial, Direction A Achieved volume 60° Axial, Direction B Achieved volume 4SO Clrc, Direction A Achieved volume 4SO Clrc, Direction B Achieved volume 60° Clrc, Direction A Achieved volume 600 Clrc, Direction B Composite coverage achieved Supplemental Report File Code: E170.0100 Report No.:
UT -o5-084 Page:
7 of 10 86.4%
99.6%
63.6%
99.6%
49.5%
86.4%
86.4%
86.4%
86.4%
Date: (D/t9/t~.sr
ULNRC-06218 page 22 Of36 1'-AmeniRuE SUini'*V No.: CAL83.110.0DDII e-. ClwtlclnMI,...
Supplemental Report 2-TBB03-10C-W
"-Pad No.:
UT -GH14 Page:
10
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NIA zz :j 7 ill Oilier: -.Trawta
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ofowld} = m.l" m. Te!.el CRY
- .s,*
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ULNRC-06218 page 23 Of36
- t}AimnnUE SUpplemental Report
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f}AmemnUE ULNRC-06218 page 24 Of36 Supplemental Report
-~-"-
~
- .~=~
~
Skalch Cll' Phalo:
2-TBB03-1 OC-W
._,.... No.:
UT.Q5.014
...,~.,~
.L..* J.A!fiJ LI.Dz" Dale:~
ca.:~
Dale:~
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- 1.5.64%"1q. X 50" (~
D/wdt/J
- 712.1"., Tob!l CBV
ULNRC-06218 Step1 Step2 Step3 1
2 3
2-TBB03-1 OA-W Class 1 and 2 Pressure Vessel Coverage Calculation CalcuJatt C!rcumflf!Dct <wbn ragulrldl Diameter=
Circumference Calculate Total Reaulred Volume WldthofWRV Thickness of WRV in2 required Total Required Volume Calculate Total Volyme with No 0° Obstruction #1 length of obstructed area ln2wlth no coverage volume obstructed Obstruction #2 length of obstructed area in2wlth no coverage volume obstructed Obstruction #3 length of obstructed area in2 with no coverage volume obstructed Total obstructed from 0° Page 1 of6 34.00.
106.81
- 5.80.
3.30.
19.14 sq. in.
2044.42 cu. ln.
30.00.
0.96 sq. ln.
28.71 cu. ln.
106.81 "
6.89 sq. ln.
735.65 cu. ln.
sq. ln.
0.00 cu. ln.
37.4%
ULNRC-06218 fiAIIBWIIUf page 26 Of 36 2-TBB03-1 OA-W Class 1 amd 2 Pressure vessel CGVetage Calcylatfen Step4 Calculate Total yolymt with No W Axfal. Direction A 1
Obstruction #1 length of obstructed area ln2with no coverage volume obstructed 2
Obstruction #2 length of obstructed area ln2 with no coverage volume obstructed 3
Obstruction #3 length of obstructed area ln2with no coverage volume obstructed Total obstructed from 45° Axial, Direction A StepS Caleulata Total Volumt with Np WMI!Ie Dlntctloo B 1
Obstruction #1 length of obstructed area ln2 with no coverage volume obstructed 2
Obstruction #2 length of obstructed area ln2 with no coverage volume obstructed 3
Obstruction #3 length of obstructed area ln2 with no coverage volume obstructed Total obstructed from ~Axial, Direction B
~e2 of 8 30.00..
6.53 sq. ln.
195.80 cu. ln.
106.81..
3.32 sq. ln.
354.48 cu. ln.
sq. ln.
0.00 cu. ln.
26.9%
30.00.
0.05 sq. ln.
1.35 cu. ln.
106.81..
14.20 sq. in.
1516.94 cu. ln.
sq. ln.
0.00 cu. ln.
74.3%
ULNRC-06218 tJ'Aar.UE page270f36 2-TBB03-10A-W Class 1 and 2 Pressure Vessel Csverage Olculation Step6 Calculate Total Volume with No 80° Axial. Direction A 1
Obstruction #1 length of obstructed area ln2 with no coverage volume obstructed 2
Obstruction #!l length of obstructed area in2 with no coverage volume obstructed 3
Obstruction #3 length of obstructed area in2 with no coverage volume obstructed Total obstructed from 60° Axial, Direction A Step7 Calcylate Total Volume with No 60° Axial. Direction B 1
Obstruction #1 length of obstructed area in2 with no coverage volume obstructed 2
Obstruction #!l length of obstructed area ln2wlth no coverage volume obstructed 3
Obstruction #3 length of obstructed area in2 with no coverage volume obstructed Total obstructed from 60° Axial, Direction B Page 3 of6 30.00.
12.61 sq. in.
378.37 cu. ln.
106.81 "
2.17 sq. ln.
231.78 cu. ln.
sq. ln.
0.00 cu. ln.
29.8%
30.00.
0.03 sq. ln.
0.81 cu. ln.
106.81
- 16.94 sq. in.
1809.63 cu. ln.
sq. ln.
0.00 cu. ln.
88.6%
Step8 Step9 ULNRC-06218 page280f36 2-TBB03-1 OA-W Class1 and 2 Ptessyte vessel Coverage calculatjarn Calcufata Total Volume with No go Clrc. Dlrtetlon A 1
Obstruction #1 length of obstruclad area ln2wlth no coverage volume obstructed 2
Obstruction #2 length of obstructed area ln2 with no coverage volume obstructed 3
Obstruction #3 length of obstructed area ln2 with no coverage volume obstructed Total obstructed from 45" Clrc, Direction A Cllculatt Total Volume with No 4f' Clrc, Dlr!ctJon B 1
Obstruction #1 length of obstructed area ln2 with no coverage volume obstructed 2
Obstruction #2 length of obstructed area Jn2with no coverage volume obstructed 3
Obstruction #3 length of obstructed area in2 with no coverage volume obstructed Total obstructed from 45" Clrc, Direction B Page4of6 30.00.
0.96 sq. ln.
28.71 cu. ln.
106.81
- 6.89 sq. ln.
735.65 cu. ln.
sq. ln.
0.00 cu. ln.
37.4%
30.00.
0.98 sq. ln.
28.71 cu. ln.
106.81
- 6.89 sq. ln.
735.65 cu. ln.
sq. ln.
0.00 cu. ln.
37.4%
ULNRC-06218 page 29 Of36 2-TBB03-10A-W Class1 and 2 Pressu te vessel Coverage ealcylatjon Step 10 Calculate Total Volume with No 60° Clrc, Direction A 1
Obstruction #1 length of obstructed area in2wlth no coverage volume obstructed 2
Obstruction #2 length of obstructed area in2wlth no coverage volume obstructed 3
Obstruction #3 length of obstructed area ln2with no coverage volume obstructed Total obstructed from 60° Circ, Direction A Step 11 Calculate Total Volume with No 80° Clrc, Direction B 1
Obstruction #1 length of obstructed area in2with no coverage volume obstructed 2
Obstruction #2 length of obstructed area ln2 with no coverage volume obstructed 3
Obstruction #3 length of obstructed area in2 with no coverage volume obstructed Total obstructed from 60° Circ, Direction B Page 5 of6 30.00.
0.96 sq. in.
28.71 cu. ln.
106.81 "
6.89 sq. in.
735.65 cu. ln.
sq. in.
0.00 cu. ln.
37.4%
30.00.
0.96 sq. in.
28.71 cu. ln.
106.81 "
6.89 sq. ln.
735.65 cu. ln.
sq. ln.
0.00 cu. ln.
37.4%
ULNRC-06218 fl',. DE Attachment 3 page 30 Of 36 2-TBB03-1 OA-W Class 1 and 2 Pressure Vessel Coverage Caley latfem Total Volume Achieved per scan:
Achieved volume 0° 62.6%
Achieved volume 4SO Axial, Direction A 73.1%
Achieved volume 45' Axial, Direction B 25.7%
Achieved volume 6<f Axial, Direction A 70.2%
Achieved volume 60° Axial, Direction B 11.4%
Achieved volume 45' Clrc, Direction A 62.6%
Achieved volume 4SO Circ, Direction B 62.6%
Achieved volume 6(f Clrc, Direction A 62.6%
Achieved volume 60° Clrc, Direction B 62.6%
Composite coverage achieved
~
Examiner
~
~
~
Reviewer 1}-l-110 date Site Review
&.~ Y-fiJ
/1'- /-#s-date Page 6 of6
~
page 31 Of36
- 'erenUE Summary No.: CALB3.110.0001 2-TBB03-1 OA-W Supplemental Report Report No.:
UT -o5-088 Page:
2 of 7
Date: N-.1-ttr Examiner: NIA
~
Level: ~
Site Review:
Examiner: Ruaornanno, Marla L
~
_. L.svel:
II Reviewer:
Other: Charbon!!!!, Shane (Revf#Met~
Level: D-PDI ANII RevieW: ::::::::::::::::::::::::::::
Date:.lt/1/d~
Date:
.!1/1( Dr Comments: Weld Profile Sketch or Photo:
fa, *;H 3 Scf,. in
- I I
I I
I SUpptemenlal Report Re COde: E170.0100 0-l"ti.f ~ if\\
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~AmemnUE ULNRC-06218 page 32 Of36 Summary No.: CALB3.110.0001 2-TBB03-10A-W Supplemental Report Report No.:
UT-GS-088 Page:
3 of 7 -
Examiner: Russomanno. Mario
~~
>¥~A Level: --;;:-
Site Review: B.L.
Date: "/r j, J-L.owl:
n
"""""'""...,_-~--
Data:, __...,,..
Level:,...DI ANII--== ~Dale: ttNer Comments: 0", 45 Clrc and 60 Clrc Direction A and Direction B ObstrucUon t1 and Obslruction 12
-- -- -- --,--.~---or-----~-.--
Sketch or Pholo:
Pc'a.'-'\\l~~"i ~ er-S.ree tJD7.~\\.c Supplemenlal Report File Code: E170.0100
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~AmemnUE ULNRC-06218 page 33 Of 36 2-TBB03-1 OA-W Supplemental Report Report No.:
UT.05-088 Summary No.: CALB3.110.0001 Examiner: Russomanno, Uarlo L Examiner: NJA
, 9
~~.J..
Corrvnents: 45* Axial Direction A Obstruction #1 and Obstruction 12 Sketch or Photo: ---T PiG'SQ1'a'aCt' s.,e ~4.
SUpplemental Report File Code: E170.0100
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AmemnUE ULNRC..06218 page 34 Of36 Summary No.: CALB3.110.D001 Supplemental H~pun
-- n-
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-Level:
Comments: 45* Axial Direction B Obstruction #1 and Obstruction 12 I 7 7
Sketch or Photo:
~-~~""*,.... e.,.
s.,,&~ IJcn:z.\\.t.
SUppernenlal Report FUe Code: E170.0100 Obsffuof.ion *)
g,~,.d 2-TBB03-10A-W UT-05-088 Report No.: -----
Page:
7 5
of_
Date: N-tl' - 4 >-
Dale:,,;3/or Fred C. OUyang =79 (/ c- (~Ji=J Date: "/flat locia.\\
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.AmB111nUE ULNRC-06218 page 35 Of36 Supplemental Report Sunmary No.: CALB3.11 0.0001 Examiner: Russomanno, Mario L.
Level:
II Examiner: NIA
~
J Level:
N/A Other: Charbonnet. Shane (Reviewer)
~- Level: -;,:po,-
Comments: 6o-Axial Direction A Obstruction #1 and Obstruction 12
~
Sketch or Photo:
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Sur0e. \\Jon\\.t.
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2-TBB03-1 OA-W Report No.:
UT -G6-088 Page:
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AmemnUE ULNRC-06218 page 36 Of36 SI.ITifl18ry No.: CALB3.110JI001 Supplemental Heport II Examiner: NIA
>'VA17 L.avel: 11-PDI Comments: 6QO Axial DirecUon B Obstruction 11 and Obstruction #2 I
w S
I-,__
Sketch or Photo:
P--~':."'..'..11.~te.l'"
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Supplemental Report File Code: E170.0100
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UT -os.oB8 AxioJ Dire.ct*\\01, B
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Date: &Ms-oate: 11/4/Pr p,.... ~\\lfi"a.e.(
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ULNRC-06218 acalO CFR 50.55a Request Number 13R-18 Relief Requested in Accordance with 10 CFR 50.55a(g)(5)(iii)
--Inservice Inspection Impracticality--
- 1. ASME Code Components Affected Weld Number Description EBBO 1 A-RSG-SCOO 1 Steam Generator Bottom Head to Tubesheet Weld
2. Applicable Code Edition and Addenda
ASME Code Section XI - 1998 Edition with the 2000 Addenda
3. Applicable Code Requirement
Exam Item Category No.
B-B B2.40 Table IWB-2500-1, Examination Category B-B, Item No. B2.40, requires a volumetric examination of all welds during the first inspection interval. The four steam generators were replaced at the end of the second interval, so the third interval is the first inspection interval for the replacement steam generators. The volumetric examination method used is ultrasonic examination, and IWA-2232 requires ultrasonic examination be conducted in accordance with Appendix I. For vessels other than the reactor vessel, I-2120 directs that ultrasonic examination of all vessels greater than 2 inches in thickness shall be conducted in accordance with Article 4 of Section V.
4. Impracticality of Compliance
The subject weld is the steam generator bottom-head-to-tubesheet weld on steam generator "A" and is greater than 2 inches in thickness but was examined using Section XI, Appendix VIII techniques instead of Section V, Article 4.
At the time of the examination, NDE equipment problems arose which prevented the performance of a Section V, Article 4 examination. Since this is a high dose area and the scaffold had been built and the insulation removed, an Appendix VIII examination was performed using Appendix VIII qualified personnel, procedures, and equipment. The need for NRC relief to allow use of the Appendix VIII technique was overlooked until the examinations for interval closeout of the third Inservice Inspection interval were reviewed.
All four steam generators were examined during the third interval and all had limited coverage on the bottom head to tube-sheet weld. Relief request BR-09 has been submitted concerning the limited coverage.
5. Burden Caused by Compliance
Due to the difficulty that resulted from the previously cited NDE equipment problems, compliance with Article 4 of Section V would have resulted in additional expenditure of 1 of 2
ULNRC-06218 time, resources and dose without a corresponding increase in quality or safety when compared to the Appendix VIII examination that was performed,.
6. Proposed Alternative and Basis for Use
It is proposed that the Appendix VIII examination performed on steam generator "A" be accepted for meeting Table IWB-2500-1, Examination Category B-B, Item No. B2.40, first inspection interval examination requirements.
From the 2005 Addenda of Section XI onward, substitution of an Appendix VIII examination in lieu of a Section V, Article 4 examination has been acceptable per Section XI Appendix I so long as the item to be examined is within scope of the Appendix VIII examination procedure. The NRC has reviewed and endorsed the 2007 Edition with 2008 Addenda of ASME Section XI that contains this allowance.
1-2600 APPENDIX VIII EXAMINATION (a) For components to which Appendix VIII is not applicable, examination procedures, personnel, and equipment qualified in accordance with Appendix VIII may be applied, provided such components, materials, sizes, and shapes are within the scope of the qualified examination procedure.
(b) Examination coverage shall be in accordance with 1-3000.
(c) No other I-1000 or I-2000 requirements apply.
The personnel, equipment and procedures used were qualified in accordance with Appendix VIII for use on reactor pressure vessel circumferential and longitudinal welds. The personnel, equipment and procedures have been proven to be effective at finding actual flaws. An additional zero degree scan was performed in accordance with Section V because this was the only part of the Section V examination not addressed by Appendix VIII.
No recordable indications were found during the limited coverage examinations of the other three steam generators that were performed during this third Inservice Inspection interval using Section V Article 4 techniques. As provided in Note 1 ofTable IWB-2500-1, only one steam generator needs examination in subsequent intervals. Steam generator "A" has been chosen for future examinations in the subsequent intervals.
7. Duration of Proposed Alternative
The Third 1 0-year Interval.
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