RBG-46968, Supplement to Requests for Relief from ASME Section XI Volumetric and Visual Examination Requirements - Second 10-Year Interval
| ML093140094 | |
| Person / Time | |
|---|---|
| Site: | River Bend  |
| Issue date: | 10/30/2009 |
| From: | Lorfing D Entergy Operations |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| RBG-46968 | |
| Download: ML093140094 (33) | |
Text
SnEntergy River Bend Station 5485 U.S. Highway 61 N St. Francisville, LA 70775 Tel 225-381-4157 David N. Lorfing Manager, Licensing RBG-46968 October 30, 2009 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555
SUBJECT:
Reference Supplement to Requests for Relief from ASME Section Xl Volumetric and Visual Examination Requirements-Second 10-Year Interval River Bend Station Docket No. 50-458 License No. NPF-47 Letter; RBG-46916, Requests for Relief from ASME Section Xl Volumetric and Visual Examination Requirements - Second.10-Year Interval, dated May 29, 2009 (TAC. Numbers ME1466, ME1469, ME1470, ME1471, and ME1472)
Dear Sir or Madam:
In an application dated May 29, 2009, Entergy Operations, Inc. (Entergy) requested relief pursuant to 10CFR50.55a(g)(5)(iii), from American Society of Mechanical Engineers (ASME) code requirements.
The relief requests are associated with ISI activities performed and identified during the River Bend Station, Unit 1 (RBS) ASME Section Xl second 10-Year Inservice Inspection Interval and requested relief from the requirements of the American Society of Mechanical Engineers (ASME), Boiler and Pressure Vessel (B&PV) Code,Section XI pertaining to volumetric and visual examinations at RBS.
Based on its review of the application, the NRC requested additional information. The requested information is supplied in Attachment 1.
This submittal contains no new commitment.
If you have any questions or require additional information, please contact me.
Ac-r to RBG-46968 Page 2 of 30 Sincerely DNLIbmb Attachments:
- 1. Additional information for Request for Relief RBS-ISI-007, RBS-ISI-008, RBS-ISI-009, RBS-ISI-010 and RBS-ISI-011 cc:
Regional Administrator U. S. Nuclear Regulatory Commission Region IV 612 E. Lamar Blvd., Suite 400 Arlington, TX 76011-4125 NRC Senior Resident Inspector P. 0. Box 1050 St. Francisville, LA 70775 U. S. Nuclear Regulatory Commission Attn: Mr. Alan B. Wang MS 0-7 D1 Washington, DC 20555-0001 Mr. Jeffrey P. Meyers Louisiana Department of Environmental Quality Office of Environmental Compliance Attn. OEC - ERSD P. 0. Box 4312 Baton Rouge, LA 70821-4312 RBG-46968 Additional Information for Request for Relief RBS-ISI-007, RBS-ISI-008, RBS-ISI-009, RBS-ISI-01 0 and RBS-ISI-01 I to RBG-46968 Page 1 of 30 Additional Information for Request for Relief RBS-ISI-007, RBS-ISI-008, RBS-ISI-009, RBS-ISI-010 and RBS-ISI-011 NRC Email June 29, 2009 1.0 SCOPE By letter dated May 29, 2009, (Agency wide Documents Access & Management System (ADAMS) ML091560230), Entergy Operations, Inc. (the licensee), submitted its second 10-year inservice inspection (ISI) interval Requests for Relief (RR) RBS-ISI-007, RBS-ISI-008, RBS-ISI-009, RBS-ISI-01 0, and RBS-ISI-01 1 from the requirements of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code), Section Xl, for River Bend Station (RBS).
In accordance with Title 10 Code of Federal Regulations (10 CFR) 50.55a(g)(5)(iii), the licensee has submitted the subject requests for relief for limited examinations in multiple ASME Code Examination Categories. The ASME Code requires that 100% of the examination volumes, or surface areas, described in ASME Code,Section XI, Tables IWB-2500 and IWC-2500 be performed during each interval. The licensee stated that 100% of the ASME Code-required volumes, or surface areas, are impractical to obtain at RBS.
10 CFR 50.55a(g)(5)(iii) states that when licensees determine that conformance with ASME Code requirements are impractical at their facilities, they shall submit information to support this determination. The Nuclear Regulatory Commission (NRC) will evaluate such requests based on impracticality, and may impose alternatives, giving due consideration to public safety and the burden imposed on the licensee. Based on the staff's Office Instruction LIC-109 Acceptance Review Procedures (ADAMS ML081200811) review it was determined that additional information was required in order for the staff to begin its review of the licensee's submittal dated June 1, 2009.
2,0 REQUEST FOR ADDITIONAL INFORMATION
- 1. General-Information Required on All Requests for Relief In most cases, the licensee has provided only general information regarding impracticality of obtaining ASME Code-required volumetric examination, as applicable. Statements such as "scanning obstructions and geometric surface conditions," "design configurations,"
"nozzle-to-head configuration," and "due to transition of the nozzle adjacent to the weld toe" are inadequate to explain the bases for not obtaining the ASME Code-required examination volumes. No sketches with dimensional information showing the causes of limited accessibility have been included.
The staff requests that the licensee submit detailed and specific information to support the bases for limited examination in all requests for relief, and therefore, demonstrate impracticality. The licensee shall:
a) Include descriptions (written and/or sketches, as necessary) of the interferences to applied nondestructive examination (NDE) techniques.
to RBG-46968 Page 2 of 30 b) As applicable, describe NDE equipment (ultrasonic scanning apparatus), details of the listed obstructions (size, shape, proximity to the weld, etc.) to demonstrate accessibility limitations, and discuss whether alternative methods or advanced technologies could be employed to maximize ASME Code coverage.
c) Fully clarify the wave modality and insonification angles used for all ultrasonic examinations.
d) Show cross-sectional coverage plots to describe ASME Code volumes examined.
e) If surface examination is required by the ASME Code in addition to the volumetric examination, state whether surface examinations were performed on any of the subject components and state examination coverage that was obtained.
f)
If not included, state whether any indications were discovered as a result of Code-required examinations, and how these indications have been dispositioned.
Entergy Response The questions apply to the following relief requests. Attached are each of the items listed in each relief request. Responses to the NRC questions are noted in the tables provided and are labeled a) through f).
RBS-ISI-007 B - A Examinations RBS-ISI-008 B - D Examinations RBS-ISI-009 B - G - 1 Examinations RBS-ISI-010 B - J Examinations RBS-ISI-01 1 B - K Examinations to RBG-46968 Page 3 of 30 RELIEF REQUEST Response to NRC Questions RBS-ISI-007, B-A Examinations Item Item Number Item ID Description Coverage Response to NRC Questions B1.40 B13-DO01-AG RPV Head to 50%
a) Scanning is limited to single side access due to configuration. Scanned from head side only.
Flange Weld See attached sketch of scan coverage.
b)
Weld scanned manually with KBA, Megasonics and Stavely search units and Staveley Sonic 136 instrument. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage.
c) Modality - Shear and longitudinal. Insonification angles - 00 L, 45°S and 60 0S d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Magnetic Particle surface examination performed with full coverage obtained.
f)
No relevant indications recorded for either the ultrasonic or the surface examinations.
to RBG-46968 Page 4 of 30 z
Dg V
40 4j4A 9RCPa
- a -
a to RBG-46968 Page 5 of 30 RBS-ISI-008, B-D Examinations Item Item Number Item ID Description Coverage Response to NRC Questions B3.90 N03A-1 24" Main 50.0%
a) Scanning is limited to single side access due to nozzle configuration. Scanned from vessel side Steam, RPV only. See attached sketches of nozzle locations and scan coverage.
Nozzle to b) Weld scanned manually with KBA search unit and Staveley Sonic 136 instrument. 100% of the Shell ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage.
c)
Modality - Shear and longitudinal. Insonification angles - 00L, 450S and 600S.
d)
See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
f)
No relevant indications recorded.
B3.90 N03B-1 24" Main 50.0%
a) Scanning is limited to single side access due to nozzle configuration. Scanned from vessel side Steam, RPV only. See attached sketches of nozzle locations and scan coverage.
Nozzle to b) Weld scanned manually with KBA search unit and Staveley Sonic 136 instrument. 100% of the Shell ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage.
c)
Modality - Shear and longitudinal. Insonification angles - 00L, 450S and 60'S.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
f)
No relevant indications recorded.
B3.90 N03C-1 24" Main 50.0%
a) Scanning is limited to single side access due to nozzle configuration. Scanned from vessel side Steam, RPV only. See attached sketches of nozzle locations and scan coverage.
Nozzle to b) Weld scanned manually with KBA search unit and 9taveley Sonic 136 instrument. 100% of the Shell ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage.
c) Modality - Shear and longitudinal. Insonification angles - 0°L, 45°S and 60'S.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
f)
No relevant indications recorded.
to RBG-46968 Page 6 of 30 RBS-ISI-008, B-D Examinations Item Item Number Item ID Description Coverage Response to NRC Questions B3.90 N03D-1 24" Main 50.0%
a) Scanning is limited to single side access due to nozzle configuration. Scanned from vessel side Steam, RPV only. See attached sketches of nozzle locations and scan coverage.
Nozzle to b) Weld scanned manually with KBA search unit and Staveley Sonic 136 instrument. 100% of the Shell ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage.
c)
Modality - Shear and longitudinal. Insonification angles - 0°L, 45°S and 60'S.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
f)
No relevant indications recorded.
B3.90 N16-1 12" RCS Inlet 50.0%
a) Scanning is limited to single side access due to nozzle configuration. Scanned from vessel side Nozzle to only. See attached sketches of nozzle locations, configurations and scan coverage.
Vessel b) Weld scanned manually with KBA search unit and Staveley Sonic 136 instrument. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage.
c)
Modality - Shear and longitudinal. Insonification angles - 0°L, 45°S and 60'S.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
Sf)
No relevant indications recorded.
.50.0%
a) Scanning is limited to single side access due to nozzle configuration. Scanned from vessel side Nozzle to only. See attached sketches of nozzle locations, configurations and scan coverage.
Vessel b) Weld scanned manually with KBA search unit and Staveley Sonic 136 instrument. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage.
c)
Modality - Shear and longitudinal. Insonification angles - 0°L, 45°S and 60'S.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
f)
No relevant indications recorded.
to RBG-46968 Page 7 of 30 RBS-ISI-008, B-D Examinations Item Item Number Item ID Description Coverage Response to NRC Questions B3.90 N04B-1 12" Feedwater 50.0%
a) Scanning is limited to single side access due to nozzle configuration. Scanned from vessel side Nozzle to only. See attached sketches of nozzle locations, configurations and scan coverage.
Vessel b) Weld scanned manually with KBA search unit and Staveley Sonic 136 instrument. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage.
c)
Modality - Shear and longitudinal. Insonification angles - 0°L, 450S and 60°S.
d)
See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination no.t required.
f)
No relevant indications recorded.
B3.90 N04C-1 12" Feedwater 50.0%
a) Scanning is limited to single side access due to nozzle configuration. Scanned from vessel side Nozzle to only. See attached sketches of nozzle locations, configurations and scan coverage.
Vessel b) Weld scanned manually with KBA search unit and Staveley Sonic 136 instrument. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage.
c)
Modality - Shear and longitudinal. Insonification angles - 0°L, 450S and 60°S.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
f)
No relevant indications recorded.
B3.90 N04D-1 12" Feedwater 50.0%
a) Scanning is limited to single side access due to nozzle configuration. Scanned from vessel side Nozzle to only. See attached sketches of nozzle locations, configurations and scan coverage.
Vessel b) Weld scanned manually with KBA search unit and Staveley Sonic 136 instrument. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage.
c)
Modality - Shear and longitudinal. Insonification angles - 0°L, 450S and 60'S.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
f)
No relevant indications recorded.
to RBG-46968 Page 8 of 30 RBS-ISI-008, B-D Examinations Item Item Number Item ID Description Coverage Response to NRC Questions B3.90 N02A-1 10" RCS Inlet 85.0%
a) Scanning is limited to single side access due to close proximity of nozzletransition. See Nozzle to attached sketches of nozzle locations, configurations and scan coverage.
Vessel b) Weld scanned manually with Krautkramer and RTD search units and Staveley Sonic 136 and Krautkramer instruments. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed to App. VIII requirements with Appendix VIII qualified procedures.
c) Modality - Shear and longitudinal. Insonification'angles - 35°S, 50'S and 60°RL.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
f)
No relevant indications recorded.
B3.90 N02B-1 10" RCS Inlet 85.0%
a) Scanning is limited to single side access due to close proximity of nozzle transition. See Nozzle to attached sketches of nozzle locations, configurations and scan coverage.
Vessel b)
Weld scanned manually with Krautkramer and RTD search units and Staveley Sonic 136 and Krautkramer instruments. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed to App. VIII requirements with Appendix VIII qualified procedures.
c) Modality - Shear and longitudinal. Insonification angles - 350S, 50'S and 60°RL.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
f)
No relevant indications recorded.
B3.90 N02C-1 10" RCS Inlet 79.0%
a) Scanning is limited to single side access due to close proximity of nozzle transition. This nozzle Nozzle to also has additional limitation due to proximity of the N9 nozzle. See attached sketches of nozzle Vessel locations, configurations and scan coverage.
b) Weld scanned manually with Krautkramer and RTD search units and Staveley Sonic 136 and Krautkramer instruments. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed to App. VIII requirements with Appendix VIII qualified procedures.
c) Modality - Shear and longitudinal. Insonification angles - 350S, 50'S and 60°RL.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
f).No relevant indications recorded.
to RBG-46968 Page 9 of 30 RBS-ISI-008, B-D Examinations*
Item Item Number Item ID Description Coverage Response to NRC Questions B3.90 N02D-1 10" RCS Inlet 79.0%
a) Scanning is limited to single side access due to close proximity of nozzle transition. This nozzle Nozzle to also has additional limitation due to proximity of the N9 nozzle. See attached sketches of nozzle Vessel locations, configurations and scan coverage.
b) Weld scanned manually with Krautkramer and RTD search units and Staveley Sonic 136 and Krautkramer instruments. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed to App. VIII requirements with Appendix VIII qualified procedures.
c)
Modality - Shear and longitudinal. Insonification angles - 350S, 50'S and 60°RL.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
f)
No relevant indications recorded.
B3.90 N02E-1 10" RCS Inlet 85.0%
a) Scanning is limited to single side access due to close proximity of nozzle transition. See Nozzle to attached sketches of nozzle locations, configurations and scan coverage.
Vessel b) Weld scanned manually with Krautkramer and RTD search units and Staveley Sonic 136 and Krautkramer instruments. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed to App. VIII requirements with Appendix VIII qualified procedures.
c)
Modality - Shear and longitudinal. Insonification angles - 350S, 50'S and 60°RL.
d)
See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
f)
No relevant indications recorded.
B3.90 NO2F-1 10" RCS Inlet 85.0%
a) Scanning is limited to single side access due to close proximity of nozzle transition. See.
Nozzle to attached sketches of nozzle locations, configurations and scan coverage.
Vess~el b)
Weld scanned manually with Krautkramer and RTD search units and Staveley Sonic 136 and Krautkramer instruments. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed to App. VIII requirements with Appendix VIII qualified procedures.
c)
Modality - Shear and longitudinal: Insonification angles - 35'S, 500S and 60°RL.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
f)
No relevant indications recorded.
to RBG-46968 Page 10 of 30 RBS-ISI-008, B-D Examinations Item Item Number Item ID Description Coverage Response to NRC Questions B3.90 N02G-1 10" RCS Inlet 85.0%
a) Scanning is limited to single side access due to close proximity of nozzle transition. See Nozzle to attached sketches of nozzle locations, configurations and scan coverage.
Vessel b) Weld scanned manually with Krautkramer and RTD search units and Staveley Sonic 136 and Krautkramer instruments. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed to App. VIII requirements with Appendix VIII qualified procedures.
c) Modality - Shear and longitudinal. Insonification angles - 35°S, 50 °S and 60°RL.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
f) No relevant indications recorded.
B3.90 N02H-1 10" RCS Inlet 79.0%
a) Scanning is limited to single side access due to close proximity of nozzle transition. This nozzle Nozzle to also has additional limitation due to proximity of the N9 nozzle. See attached sketches of nozzle Vessel locations, configurations and scan coverage.
b) Weld scanned manually with Krautkramer and RTD search units and Staveley Sonic 136 and Krautkramer instruments. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed to App. VIII requirements with Appendix VIII qualified procedures.
c)
Modality - Shear and longitudinal. Insonification angles - 350S, 50'S and 60°RL.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
f) No relevant indications recorded.
B3.90 N02J-1 10" RCS Inlet 79.0%
a) Scanning is limited to single side access due to close proximity of nozzle transition. This nozzle Nozzle to also has additional limitation due to proximity of the N9 nozzle. See attached sketches of nozzle Vessel locations, configurations and scan coverage.
b) Weld scanned manually with Krautkramer and RTD search units and Staveley Sonic 136 and Krautkramer instruments. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed to App. VIII requirements with Appendix VIII qualified procedures.
c) Modality - Shear and longitudinal. Insonification angles - 35°S, 50'S and 60°RL.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
f)
No relevant indications recorded.
to RBG-46968 Page 11 of 30 RBS-ISI-008, B-D Examinations Item Item Number Item ID Description Coverage Response to NRC Questions B3.90 N02K-1 10" RCS Inlet 85.0%
a) Scanning is limited to single side access due to close proximity of nozzle transition. See Nozzle to attached sketches of nozzle locations, configurations and scan coverage.
Vessel b) Weld scanned manually with Krautkramer and RTD search units and Staveley Sonic 136 and Krautkramer instruments. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed to App. VIII requirements with Appendix VIII qualified procedures.
c)
Modality - Shear and longitudinal. Insonification angles - 35°S, 50'S and 60°RL.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination not required.
f)
No relevant indications recorded.
to RBG-46968 Page 12 of 30 dgAkM F'd ~j~q A I 41I its "S3 I
to 4C.
lo,( i i
z 7
C EV A",
34eaau 0
N¶40T 'JUPPLIMENT 'IC 4 ftCilA.6.
0 AC WELP
~
RPIR~--
C iI~oW~L
~
- .44~ *~
I
§_
p
~64 -J
?A v
MU, 4
rn240' 1
I i
p, Ito*
I W.20 qd 1L.
g Ltv- 0 3 OIB,64T SLEV. 10t fT B,49: NA Mj4 -F4~ lii bl' MKIEWiWLL S. -f'HAS OW,3.
16, NaT TO OiCAA.C.
ffý- PBS-151ý 2
PFACTOFP PPFSS;1; JRF VFSSF1 LpA j
e-,' 5,15 c-
~-sjg4 SEAM JOINT ID, NOZZLE LOCATION! & WELD MAP to RBG-46968 Page 13 of 30 CA-, JvLZ
.- NOZ-ZLE--T0O;V-5-5EL 5CANJ--1 COV.ERACE.
--- I--1-2 F 41 -N E W S
t5LE
_RF7. Dkme 1 77-5 T-rp RWV4. CHK',D APPRP.
TEI IW, O
~
St 3
to RBG-46968 Page 14 of 30 B13-DO01 N02A-1 through N02K-1 NOZZLE-TO-VESSEL CONFIGURATION AND EXAMINATION LIMITATIONS t/ 2 t,/2 N2 NOZZLE 630 SCANNED DUE I
L TO NOZZLE VESSEL WAL S A N DD E I
CONFIGURATION NOTES L
- 1. Appendix VIII procedures utilized for these examinations to RBG-46968 Page 15 of 30 RBS-ISI-009, B - G - I Examinations Item Item Number Item ID Description Coverage Response to NRC Questions a) Scanning obstructed between 3330 and 270 at each stud hole location due to raised seal face configuration. See attached sketches of flange stud hole locations, configurations and scan coverage.
b) Subject area scanned manually with Staveley and KBA search units and Krautkramer, Staveley and Panametrics instruments. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage.
FLG LIG Al-Reactor c) Modality - longitudinal. Insonification angle - 00L.
A8 through Vessel d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
FLG LIG Hi-Threads-in-e) Surface examination not required.
B6.40 H8 Flange 87%
f)
No relevant indications recorded.
to RBG-46968 Page 16 of 30 REACTOR PRESSURE VESSEL FLANGE THREADS GENERAL CONFIGURATION AND NUMBERING ARRANGEMENT
.6HELL To FLAtJGE.,ELD.. J.OI"T...
L-IA-ET
-- AREA
- 4i-P.V.
FLAW/ iE CONIECT-rIt*
THr.E - TOP HEAD A6EFMt*L%.
K K
THR GAOEI)
.. 6 TU
HOLE.
06¶ AREA: :CANtJED TO 4nc1M.
-VVLUNA
ý FTý2
-ý7 D~'
I rEcCI~CtA
-i
..t Q
CIRCVOUMEKEW7AL CAUD-S.6E:CT-.
I (-N - ý()(<
d to RBG-46968 Page 17 of 30 0
Z70
':tO
- 180 B.QýLTJMQ A~KRAWE,FEMWT-I:AX :WEL0.
-TO BE PREFIX(ED E1:VOV I-.. T-I3 LTtNC% bEUC.NCE.-BE(CIN8 WITH THE FIPST 15OLT CLOCK~k6E FROMA AvIMU¶H oý TH16 Dy/CI.
16 NOT To lb.CNE..
I [)WC,. -*
c r~
o
-No.-
RE3S I
\\JI-01 to RBG-46968 Page 18 of 30 REACTOR PRESSURE VESSEL FLANGE THREADS EXAMINATION COVERAGE Raised Sealing Surface -
Plan View of RPV Flange Unable to scan the full 1" of Code required volume SArea scanned Stainless Steel Seal RPV ID NOTES:
- 1. Diagram not to scale Vr Code required exam volume 3600 around stud A-A to RBG-46968 Page 19 of 30 RBS-ISI-010, B - J Examinations Item Item Number Item ID Description Coverage Response to NRC Questions a) Scanning from pipe side only of pipe-to-pump weld configuration. See attached sketches of configurations and scan coverage.
b)
Subject area scanned manually with KBA and RTD search units and Staveley instruments.
100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed prior to PDI implementation.
c)
Modality - Shear and longitudinal. Insonification angles - 450S and 60°RL. 450RL used for axial and circ scans due to overlay.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
RCS-900B-RCS pump to e) Surface examination performed with full code coverage.
B9.11 FWB06 20" Pipe, SS 80.7%
f)
No relevant indications recorded.
a)
Scanning from pipe side only of pipe-to-sweep-o-let weld configuration. See attached sketches of configurations and scan coverage.
b)
Subject area scanned manually with KBA and Megasonics search units and Staveley instruments. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed prior to PDI implementation.
c)
Modality - Shear and longitudinal. Insonification angles - 45°S and 60°RL.
Sweep-O-Let d)
See attached Examination Coverage Profile showing the Code Required Volume (CRV).
RCS-900C-to 10" Pipe, e) Surface examination performed with full code coverage.
B9.1 1 FWBO15 SS 85.0%
f)
No relevant indications recorded.
a)
Scanning from pipe side only of pipe-to-sweep-o-let weld configuration. See attached sketches of configurations and scan coverage.
b) Subject area scanned manually with KBA and Megasonics search units and Staveley instruments. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed prior to PDI implementation.
c)
Modality - Shear and longitudinal. Insonification angles - 450 S and 60°RL.
Sweep-O-Let d)
See attached Examination Coverage Profile showing the Code Required Volume (CRV).
RCS-900C-to 10" Pipe, e) Surface examination performed with full code coverage.
B9.11 FWBO16 SS 85.0%
f)
No relevant indications recorded.
to RBG-46968 Page 20 of 30 RBS-ISI-010, B - J Examinations Item Item Number Item ID Description Coverage Response to NRC Questions a) Scanning from pipe side only of pipe-to-sweep-o-let weld configuration. See attached sketches of configurations and scan coverage.
b)
Subject area scanned manually with KBA and Megasonics search units and Staveley instruments. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed prior to PDI implementation.
c) Modality - Shear and longitudinal. Insonification angles - 450S and 60°RL.
16" Pipe to d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
RCS-900CX-Sweep-O-Let, e) Surface examination performed with full code coverage.
B9.31 SWO14BC SS 86.0%
f)
No relevant indications recorded.
a) Scanning from pipe side only of pipe-to-sweep-o-let weld configuration. See attached sketches of configurations and scan coverage.
b)
Subject area scanned manually with KBA and Megasonics search units and Staveley instruments. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed prior to PDI implementation.
c) Modality - Shear longitudinal. Insonification angles - 450S and 60°RL.
16" Pipe to d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
RCS-900CX-Sweep-O-Let, e) Surface examination performed with full code coverage.
B9.31 SWO14CB SS 86.0%
f)
No relevant indications recorded.
a) Scanning from pipe side only of pipe-to-valve weld configuration. See attached sketches of configurations and scan coverage.
b)
Subject area scanned manually with KBA search unit and Staveley instrument. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed prior to PDI implementation.
c)
Modality - Shear. Insonification angle - 45 0S and 700S.
d)
See attached Examination Coverage Profile showing the Code Required Volume (CRV).
e) Surface examination performed with full code coverage.
WCS-OO1A1-4" Pipe to f)
No relevant indications recorded. Root geometry recorded - 3600 - outside of weld required B9.11 XI-FW005 valve weld 70.9%
volume.
to RBG-46968 Page 21 of 30 RBS-ISI-010, B - J Examinations Item Item Number Item ID Description Coverage Response to NRC Questions a)
Scanning from reducer side of pipe-to-reducer weld limited due to weld crown configuration.
See attached sketches of configurations and scan coverage.
b)
Subject area scanned manually with KBA search unit and Staveley instrument. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed prior to PDI implementation.
c)
Modality - Shear. Insonification angles - 45°S and 70'S.
d)
See attached Examination Coverage Profile showing the Code Required Volume (CRV).
WCS-001A3-4" Pipe to e) Surface examination performed with full code coverage.
B9.1 1 XI-FW01 1 reducer weld 79.0%
f)
No relevant indications recorded.
a) Scanning from tee side, only - 60% of circumference of pipe-to-tee weld accessible due to fitting configuration. See attached sketches of configurations and scan coverage.
b)
Subject area scanned manually with KBA and RTD search units and Staveley instrument. 100%
of the ASME Code Required Volume cannot be examined using manual examination methods.
No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed after PDI implementation-with Appendix VIII qualified procedures.
c)
Modality - Shear and longitudinal. Insonification angles - 450S, 60°S and 60°L.
d)
See attached Examination Coverage Profile showing the Code Required Volume (CRV).
WCS-005A-e) Surface examination performed with full code coverage.
B9.11 XI-SW002 6" Pipe to tee 80.5%
f)
No relevant indications recorded.
a) Scanning from tee side, only - 55% of circumference of pipe-to-tee weld (at branch) accessible due to fitting configuration. See attached sketches of configurations and scan coverage.
b) Subject area scanned manually with KBA and RTD search units and Staveley instrument. 100%
of the ASME Code Required Volume cannot be examined using manual examination methods.
No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed after PDI implementation with Appendix VIII qualified procedures.
c)
Modality - Shear and longitudinal. Insonification angles - 450S, 60'S and 60'L.
d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
WCS-005A-6" Tee to e) Surface examination performed with full code coverage.
B9.1 1 XI-SW003 branch 77.3%
f)
No relevant indications recorded.
to RBG-46968 Page 22 of 30 RBS-lSl-010, B - J Examinations Item Item Number Item ID Description Coverage Response to NRC Questions a) Scanning from tee side, only - 60% of circumference of pipe-to-tee weld accessible due to fitting configuration. See attached sketches of configurations and scan coverage.
b) Subject area scanned manually with KBA and RTD search units and Staveley instrument. 100%
of the ASME Code Required Volume cannot be examined using manual examination methods.
No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage. Examination performed after PDl implementation with Appendix VIII qualified procedures.
c)
Modality - Shear and longitudinal.. Insonification angles - 45°S, 60'S and 600L.
d)
See attached Examination Coverage Profile showing the Code Required Volume (CRV).
WCS-001A3-e) Surface examination performed with full code coverage.
B9.11 XI-SW002 6" Pipe to tee 80.5%
f)
No relevant indications recorded.
to RBG-46968 Page 23 of 30 RCS-900B-FWBO6 PUMP-TO-PIPE CONFIGURATION AND EXAMINATION COVERAGE WELD BUILDUP PUMP D No Coverage Direction #1 Diecio Direction #2 NOTES:
- 1. This is an approximate percent of the examination volume for which coverage was obtained.
- 2. The plot shown is a representation of the actual profile and not to scale.
to RBG-46968 Page 24 of 30 RCS-900C-FWBO15, RCS-900C-FWBO16, RCS-900CX-SWO14CB and RCS-900CX-SWO14BC SWEEP-O-LET - TO - PIPE CONFIGURATION AND EXAMINATION COVERAGE SWEEP-O-LET
[II
-No Coverage Direction #1 PIPE Direction #2 NOTES:
- 1. This is an approximate percent of the examination volume for which coverage was obtained.
- 2. The plot shown is a representation of the actual profile and not to scale.
to RBG-46968 Page 25 of 30 WCS - 001Al - XI - FW005 VALVE-TO-PIPE CONFIGURATION AND EXAMINATION COVERAGE 700 S VALVE PIPE D No Coverage F////, - Direction #1
-DcnDirection #2 NOTES:
- 1. This is an approximate percent of the examination volume for which coverage was obtained.
- 2. The plot shown is a representation of the actual profile and not to scale.
to RBG-46968 Page 26 of 30 WCS-001A3-XI-FW011 REDUCER-TO-PIPE CONFIGURATION AND EXAMINATION COVERAGE 70' S 450/ 70o S PIPE 4
FLOW LIII No Coverage ON Direction #1 Direction #2 NOTES:
- 1. This is an approximate percent of the examination volume for which coverage was obtained.
- 2. The plot shown is a representation of the actual profile and not to scale.
to RBG-46968 Page 27 of 30 WCS-005A-XI-SWO02, WCS-001A3-XI-SW002 PIPE-TO-TEE CONFIGURATION AND EXAMINATION LIMITATIONS TOP VIEW NOT SCANNED END VIEW SUBJECT WELD SUBJECT WELD NOTES:
- 1. This is an approximation of the examination volume for which coverage was not obtained.
- 2. The plot shown is a representation of the actual profile and not to scale.
to RBG-46968 Page 28 of 30 WCS-005A-XI-SWO03 TEE-TO-BRANCH CONFIGURATION AND EXAMINATION LIMITATIONS TOP VIEW NOT SCANNED END VIEW SIDE VIEW NOTES:
- 1. This is an approximation of the examination volume for which coverage was not obtained.
- 2. The plot shown is a representation of the actual profile and not to scale.
to RBG-46968 Page 29 of 30 RBS-ISI-011, B - K Examinations Item Item Number Item ID Description Coverage Response to NRC Questions a) Code permitted surface examination performed in lieu of volumetric examination. Only exterior portion of the attachment weld is accessible due to configuration. See attached sketch of configuration and area of examination coverage.
b) Subject area examined manually with magnetic particle method. 100% of the ASME Code Required Volume cannot be examined using manual examination methods. No alternative NDE methods or advanced technologies could be practically employed to maximize ASME Code coverage.
RPV Support c) Modality - N/A. Insonification angles - N/A.
Skirt d) See attached Examination Coverage Profile showing the Code Required Volume (CRV).
Attachment e) Surface examination performed with full code coverage of exterior portion of attachment only.
B10.10 CG Weld 50%
f) No relevant indications recorded.
to RBG-46968 Page 30 of 30 REACTOR PRESSURE VESSEL INTEGRALLY WELDED SKIRT CONFIGURATION AND EXTENT OF EXAMINATION B
AREA EXAMINED VEISGBý- SKIRT INACCESIBLE AREA