ML12297A069
| ML12297A069 | |
| Person / Time | |
|---|---|
| Site: | Dresden, Peach Bottom, Vermont Yankee, Clinton, PROJ0704  |
| Issue date: | 10/15/2012 |
| From: | Madison D Electric Power Research Institute |
| To: | Joseph Holonich Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 2012-159 | |
| Download: ML12297A069 (63) | |
Text
ELECTRIC POWER RESEARCH INSTITUTE 2012-159 BWR Vessel & Internals Project (BWRVIP)
October 15, 2012 Document Control Desk U. S. Nuclear Regulatory Commission 11555 Rockville Pike Rockville, MD 20852 Attention: Joseph Holonich
Subject:
Project No. 704 - BWR Vessel and Internals Inspection Summaries for Fall 2011 Outages Enclosed are five (5) copies of the document entitled "BWR Vessel and Internals Project, Vessel Internals Inspection Summaries for Fall 2011 Outages, October 2012."
The information provided in the enclosed document identifies the BWR internal components inspected and generally includes the date or frequency of inspection, the inspection method used and a summary of results including repair or replacement activities. The enclosed document is being provided to the NRC for information only.
The information contained in the enclosed document was developed by the individual utilities and has been compiled into the enclosed document by the BWRVIP. The BWRVIP plans to continue to gather such information and to provide periodic updates such as in the enclosed document.
Representatives of the BWRVIP would be pleased to meet with the NRC staff to discuss any comments or questions related to the enclosed document. If you have any questions on the enclosed document or the general subject of inspection results, please call Chuck Wirtz, BWRVIP Integration Committee Technical Chairman, FirstEnergy, at 440.280.7665.
Sincerely, Dennis Madison Southern Nuclear Chairman, BWR Vessel and Internals Project Together ... Shaping the Future of Electricity DD4 PALO ALTO OFFICE 3420 Hillview Avenue, Palo Alto, CA 94304-1395 USA o 650.855.2000 *Customer Service 800.313.3774 o www.epri.com
BWR Vessel and Internals Project Vessel Internals Inspection Summaries for Fall 2011 Outages October 2012 1
Table of Contents Plant Page
- 1. Clinton Power Station 3
- 2. Dresden 2 19
- 3. Peach Bottom Atomic Power Station, Unit 3 33
- 4. Vermont Yankee 46 2
Reactor Internals Inspection History Plant: Clinton Power Station Components in Date or Inspection Summarize the Following Information: Inspection BWRVIP Scope Frequency of Method Used Results, Repairs, Replacements, Reinspections Inspection Core Shroud Horizontal Welds 4/2002 (C1R08) UT Performed UT of Horizontal Welds.
HI, H2, H3, H4, Coverage:
H5, H6A, H6B, Weld Number % of Examined Length Length and H7. HI 59.7%
H2 67.4%
Vertical Welds H3 66.7%
VIi, V12, V13 H4 upper side 100.0%
and V14 H4 lower side 97.1%
H5 upper side 19.0%
H5 lower side 18.7%
H6A 16.4%
H6B 25.6%
H7 26.5%
ViI 95.2%
V12 95.0%
V13 87.0%
V14 87.0%
The following identify flaws:
Weld Number % of Examined Length Length Flawed HI 0.0%
H2 0.0%
3
4 Core Shroud Horizontal Welds 4/2002 UT Prior to startup an Engineering Evaluation was H I, H2,"H3, H4, (C1R08) performed to justify continued operation for one HI5, H6A, H6B, cycle. Later on several other analyses performed as and H7. identified in VIP documents to document 2 cycles of Vertical Welds operation. This plan was presented to the NRC.
VIi, V12, V13 and V14 Planning to implement a repair modification in 2/2006 (C1RIO).
4 Tie Rods 2/2006 Visual 4 Tie Rods installed in 2/2006 (CIRlO). Inspection (CiR1O) Inspection performed as required by VIP-76.
Vertical Welds: V4, V5, 01/2008 Visual Performed Visual Examination of the following V15, V16, V20, V21, V22, (CiRl 1) Inspection Vertical Welds.
and V23 Coverage:
Weld Number % of Examined Inspection Length Length Results V4 (OD Only) 100.0% Acceptable V5 (OD Only) 10.0% Inspected 100%
accessible area, but because out of correct angle due to this weld is right behind the LPCI line, except for the top area of the weld).
Acceptable.
V15 (OD Only) 10.0% Tie Rod limits access to weld, changed 25%
to 10%.
Acceptable.
V16 (OD Only) 50.0% Top portion of the weld is hidden by Tie Rod.
Acceptable.
V20 (OD Only) 100.0% Acceptable V21 (OD Only) 95.0% Acceptable V22 (OD Only) 100.0% Acceptable V23 (OD Only) 100.0% Acceptable 5
Core Shroud Detail inspection of 2 Tie 01/2008 Detail Tie Rod at 65 deg. - Acceptable Rods at'65 deg. and 245 deg. (CIRI 1) Visual Tie Rod at 245 deg. - Acceptable including tightness verification General inspection of the 01/2008 Visual Tie Rod at 155 deg. - Acceptable remaining 2 Tie Rods at 155 (CIRI 1) Inspection Tie Rod at 335 deg. - Acceptable and 335 deg.
Detail inspection of 2 Tie 01/2010 Detail Tie Rod at 155 deg. - Acceptable Rods at 155 deg. and 335 (C1R12) Visual Tie Rod at 335 deg. - Acceptable deg. including Inspection required by BWRVIP-76 & Tie Rod tightness Design.
verification General inspection of the 01/2010 Visual Tie Rod at 65 deg. - Acceptable remaining 2 Tie Rods at 65 (C1R12) Inspection Tie Rod at 245 deg. - Acceptable and 245 deg. Inspection required by BWRVIP-76 & Tie Rod Design.
Vertical Welds 12/2011 UT Performed UT of Vertical Welds.
V11, V12, V13 (C1R13) Coverage:
Weld Number % of Examined and V14 Length Length Vi 84.0%
V12 80.7%
V13 81.7%
V14 85.3%
The following identify flaws:
Weld Number % of Examined Length Length Flawed ViI 1.1%
V12 0.0%
V13 0.0%
V14 0.0%
Tie Rod at 65 deg 12/2011 VT-3 No indications identified.
(C1R13)
Tie Rod at 65 deg Upper 12/2011 EVT-1 No indications identified.
Support Comers (C1R13) 6
Shroud Support H8 and H9 Welds 10/2000 EVT-1 EVT-1 of H8 and H9 welds for >10% length per VIP-(C1R07) 38. No indications were identified.
H9 Weld 2/2004 UT UT of H9 weld for 100% length from outside the (C1R09) Reactor wall. No indications were identified.
H8 Weld 2/2006 EVT-1 No indications were identified.
(CIR1O)
Access Hole Cover 2/2004 VT-I VT-I of Access Hole Cover assembly per GE SIL (C1R09) 462. No indications were identified.
1/2010 EVT-1 EVT- 1 of Access Hole Cover and Heat Affected (C1R12) Zone (HAZ). No indications were identified.
Inspection required by BWRVIP-180.
H8 Weld 12/2011 EVT-1 & No indications were identified.
(C1R13) VT-i Core Spray Baseline Ins ection Core Spray Piping: P2, P3A, 10/2000 UT Performed UT on the identified piping welds on both P3B, P4A, P4B, P5, and P6 (C1R07) High Pressure Core Spray and Low Pressure Core Spray piping systems. Two flaw indications, one on each BP2 and CP2 welds, were identified. Evaluated for 2 cycles operation per Core Spray Flaw Evaluation Handbook.
P4C and P4D 10/2000 EVT-1 No indications were identified.
(C1R07)
P8 10/2000 VT-I No indications were identified.
(C1R07)
Core Spray Baseline Inspection Core Spray Spargers 10/2000 EVT-1/ No indications were identified.
I (C1R07) VT-1 (as required)
Core Spray Reinspection Core Spray Piping: P2's-all 2/2004 UT Performed UT on the identified piping welds on both 4, P3A's-all 4, P3B-only 1, (C1R09) High Pressure Core Spray and Low Pressure Core P4A-only 1, P4B-only 1, Spray piping systems. The two (2) existing flaw P5's-all 4, and P6-only 1. indications, one on each BP2, CP2 welds, were identified. These two (2) flaws grew in length.
Evaluated for 2 additional cycles of operation per Core Spray Flaw Evaluation Handbook. In addition, one more flaw indication on weld DP2 was identified. This flaw indication was also evaluated for two (2) cycles of operation. No other indications were identified.
7
P4c-only 1 weld 2/2004 EVT-1 No indications were identified.
P4d-only 1 weld (C1R09)
P8-only 1 A-PR, A-ADR, 2/2004 EVT-1 No indications were identified.
A-BDR, B-PR, (C1R09)
B-CDR, and B-DDR Core Spray Spargers 2/2004 EVT- No indications were identified.
(C1R09) 1/VT-1 (as required)
Auto UT and EVT-1 A-PR, A-ADR, 2/2006 EVT-1 No indications were identified.
A-BDR, B-PR, (CiR1O)
B-CDR, B-DDR A-BP4c, A-BP4d 2/2006 EVT-1 No indications were identified.
A-APB(PB1) (CiRO)
A-BPB(PB2)
A-BP8 2/2006 VT-1 No indications were identified.
(C1RO)
Core Spray Reinspection Core Spray Piping: P2's-all 01/2008 UT Performed UT on the identified piping welds on both 4, P3A's-all 4, P3B-only 1, (CIRI 1) High Pressure Core Spray and Low Pressure Core P4A-only 1, P4B-only 1, Spray piping systems. The three (3) existing flaw P5's-all 4, and P6-only 1. indications, one on each BP2, CP2, and DP2 were identified. These three (3) flaws did not grow in last two (2) cycles. The previous evaluation for 2 additional cycles of operation is still valid per Core Spray Flaw Evaluation Handbook. No other relevant indications were identified.
A-PR, A-ADR, 01/2008 EVT-1 No indications were identified.
A-BDR, B-PR, (CIR11)
B-CDR and B-DDR A-AP2, A-AP5, 01/2008 EVT-1 No indications were identified.
A-BP2, A-BP3B, (CIRI1)
A-BP6, B-CP2, and B-DP2 A-APB(PB1), 01/2008 EVT-1 No indications were identified.
A-BPB(PB2), (CI 1R1)
B-CPB(PB3),
B-DPB(PB4) 8
B-CP8 - 187 deg. 01/2008 VT-1 No indications were identified.
(CIRll)1)
Core Spray Spargers 01/2008 EVT- No indications were identified.
(CIR11) 1/VT-1 (as required)
Grinding marks and 01/2008 VT-1 No specific grinding marks or evidence of cold work evidence of cold work (C Ri 1) identified.
(except for P3a and P5)
A-AP2, A-PR 1/2010 EVT-1 No indications were identified. Inspection performed A-ADR, A-BP2, (C1R12) per BWRVIP- 18.
A-BDR, B-PR B-CP2, B-CDR B-CP3b, B-CP4c B-CP4d, B-CP6 B-DP2, B-DDR B-DP8 A-AP2, A-PR 12/2011 EVT-1 No indications were identified. Inspection performed A-ADR, A-BP2, (C1R13) per BWRVIP- 18.
A-BDR, A-AP8, B-PR, B-CP2, B-DP2 B-CDR, B-CP3b, B-CP6, B-DDR A-APB(PB 1), 12/2011 EVT- 1 No indications were identified.
A-BPB(PB2), (C1R13)
Core Spray Spargers 12/2011 EVT- No indications were identified.
(C1R13) i/VT- I (as required)
Core Spray Piping: P2's-all 12/2011 UT Performed UT on the identified piping welds on both 4, P3A's-all 4, P3B-only 1, (C1R13) High Pressure Core Spray and Low Pressure Core P4A-only 1, P4B-only 1, Spray piping systems. The three (3) existing flaw P5's-all 4, and P6-only 1. indications, one on each BP2, CP2, and DP2 were identified. These three (3) flaws grew in last two (2) cycles. Evaluated for 2 additional cycles of operation per Core Spray Flaw Evaluation Handbook. No other relevant indications were identified.
9
Top Guide Hold Down Assembly 2/2004 VT-3 Performed VT-3 of the Top Guide including Bolts including Bolts and Nuts (C1R09) and Nuts. No indications were identified.
Hold Down Assembly 12/2011 VT-3 Performed VT-3 of the Top Guide Studs, Bolts and including Bolts and Nuts (C_1_R13) Nuts. No indications were identified.
Top Guide Cell 1/2010 EVT-1 Two cells visually inspected per VIP-183. No (ClR12) indications were identified.
Top Guide Rim Weld 1/2010 EVT-1 Inspected at 0 and 180 degrees. No indications were (C1R12) identified.
Core Plate (Rim, etc.) N/A N/A N/A Standby Liquid Control N/A N/A N/A (SLC)
Jet Pumps High Priority Welds 10/2000 EVT-1 Performed EVT- 1 of remaining High Priority welds.
RS-3 Welds (C1R07) No indications were identified.
(50%)
2/2004 EVT-1 Performed EVT- 1 of remaining High Priority welds.
(Cl R09) No indications were identified.
1/2010 EVT-1 Performed EVT-1 of remaining High Priority welds.
(C1R12) No indications were identified.
Medium Priority 4/2002 EVT-1 Performed EVT- 1 of remaining Medium Priority RS-1 Welds (C1R08) welds. No indications were identified.
(50%)
01/2008 EVT-1 A gouge was identified outside the exam area of RS-(CIR11) 1 JP#8.
Riser Welds 2/2004 EVT-1 No indications were identified.
RS-2, RS-6, RS-7 (C1R09)
RS-8, and RS-9 (50%)
01/2008 EVT-1 No indications were identified.
(CIR1 1)
Riser Welds 01/2010 EVT-1 Ten RS-8 and ten RS-9 welds were inspected. No RS-8, and RS-9 (50%) (C1R12) indications were identified.
10
Jet Pumps Riser Brace 2/2004 EVT-1 No indications were identified.
RB-ia,b,c,d and (CIR09) tRB-2a,b,c,d (50%)
01/2008 EVT-1 & No indications were identified.
(CIRlI) VT- 1 01/2010 EVT-1 No indications were identified.
(CIR12)
Inlet Mixer IN-I and IN-2 2/2004 EVT-1 No indications were identified.
welds (50%) (C1R09) 01/2008 EVT-1 No indications were identified.
(CIRI 1)
Sensing Lines (50%) 2/2004 VT-I No indications were identified.
(C1R09) 01/2008 VT-I No indications were identified.
(CIRI 1)
Wedge Bearing Surface 2/2004 VT-1 50 % were inspected. 'No indications were identified.
WD-1 (CIR09) 2/2006 VT-I Four (4) were inspected. No indications were (C1Ri0) identified.
01/2008 VT-I Six (6) were inspected. No indications were (C 1R11) identified.
01/2010 VT-I Thirteen (13) were inspected. No indications were (CIR12) identified.
Jet Pump Diffuser Welds 2/2004 UT UT was performed on all welds of 100% diffusers AD- 1, AD-2, DF- 1 (C1R09)
DF-2, and DF-3.
Jet Pump Beams Baseline 01/2008 UT No indications identified.
(CIRll)
Jet Pump Fouling A, B, and 01/2010 VT-I Four JP Fouling were inspected. No indications were C (CIR12) identified.
Jet Pump Fouling A, B, and 12/2011 VT-I Four JP Fouling were inspected. No indications were C (ClR13) identified.
CRD Guide Tube CRD Guide Tube 4/2002 EVT-I/VT 11% examined (17) per VIP-47, CRDGT-1,2,3 and (Cl R08) -3 (as pin. No indications were identified.
I_ applicable) 11
Dry Tubes 4 IRM 4/2002 VT-3 No indications were identified.
(CIR08) 2/2004 VT-1 No indications were identified.
(C1R09) 2/2006 VT-3 No indications were identified.
(C1R10) 1/2008 VT-3 No indications were identified.
(CIRll) 1/2010 VT- I No indications were identified. Inspection performed (CIR12) I per GESIL-409.
12/2011 VT-3 No indications were identified. Inspection performed (CIR13) per GESIL-409.
2 SRM 2/2004 VT-1 Four (4) SRM's were inspected. One indication (CIR09) identified on SRM 'D'. Evaluated for operating one cycle.
2/2006 VT-3 One (1) SRM was inspected. No indications were (C1R10) identified.
2/2006 VT-3 SRM 'D' dry tube was replaced in C1R10.
(ClR10) 1/2008 VT-3 Two (2) SRM's were inspected. One indication (CiRI 1) identified on SRM 'A'.
1/2010 VT-I Two (2) SRM's were inspected. No indications were (C1R12) identified.
12/2011 VT-3 Two (2) SRM's were inspected. One indication (CIR13) identified on SRM 'B'.
4 LPRM 2/2006 VT-3 No indications were identified.
(C1R10) 1/2008 VT-3 No indications were identified.
(CIRll) 1/2010 VT-I No indications were identified.
(C1R12) 12/2011 VT-3 No indications were identified.
(C1R13)
Instrument Penetrations Instrument Penetrations N/A N/A N/A 12
Vessel Interior Interior 10/2000 VT-3 Section XI inspection. No indications were identified.
(ClR07) 2/2004 VT-3 Section XI inspection. No indications were identified.
(ClR09) 01/2008 VT-3 Section XI inspection. No indications were identified.
(CIRIl) 12/2011 VT-3 Section XI inspection. No indications were identified.
(C1R13) _
Brackets Steam Dryer Hold Down 10/2000 VT-3 Section XI inspection. No indications were identified.
Brackets (C1R07) 12/2011 VT-3 Section XI inspection. No indications were identified.
(CIR13)
Steam Dryer Support 10/2000 VT-3 Section XI inspection. No indications were identified.
Brackets (C1R07) 2/2004 EVT-1 Several brackets have contact marks and several (C1R09) brackets do not. Clinton will be monitoring this condition.
2/2006 EVT-1 No change in contact mark.
(CIR1O) 1/2008 EVT-1/ No change in contact mark.
(CIRlI) VT-1/-3 1/2010 EVT-1 No change in contact mark.
(C1R12) 12/2011 EVT- 1 & No change in contact mark.
(C1R13) VT-3 Guide Rod Support Brackets 10/2000 VT-3 Section XI inspection. No indications identified.
(C1R07) 2/2006 VT-i No indications identified. Guide rods and brackets (Cl R10) were inspected to look for any damage caused by steam separator lower bracket.
12/2011 VT-i & BWRVIP-48A and Section XI inspection. No (C1R13) VT-3 indications identified.
13
Surveillance Sample 2/2004 VT-I Section XI inspection is SAT. However, both lower Brackets (C1R09) tack welds on 2 of the brackets found to be cracked.
Evaluated for continued operation. Clinton will inspect these brackets in next refueling outage.
2/2006 VT-1 Inspected brackets at 3 deg. and 177 deg. and (CIR10) previously identified cracks. No change was observed.
1/2008 VT-I Inspected brackets at 3 deg. and 177 deg. and (CIRI 1) previously identified cracks. No change was observed. Also, inspected the third one located at 183 deg. both upper and lower. No indications identified.
1/2010 VT-i Inspected brackets at 3 deg. and 177 deg. and (C1R12) previously identified cracks. No change was observed.
Core Spray Bracket 12/2011 VT-3 Section XI inspection. No indications identified.
Attachments (C1R13)
Steam Separator (1/2)
Steam Separator (1/2) 10/2000 VT-3 One minor dent identified.
(C1R07) 2/2004 VT-3 Inspected previously identified dent/deformation. No (C1R09) change identified.
Lower Bracket @ 0 deg 2/2006 VT-3 Performed VT-3 of Steam Dryer Tie Rods. No (CIR1O) indications identified.
Guide Rod Flange 0 deg 12/2011 VT-3 Slight gouge was identified. No change from CIR10 (CIR1 3) identified.
Guide Rod Flange 180 deg No indications identified.
Lifting Eye 80 deg 2 slivers on the Upper Ring were identified and wear noted on both upper and lower intersections of lug to ring Lifting Eye 150 deg Wear noted on upper ring to assembly to lug.
Lower Tie Straps (0-90 deg) No indications identified.
Lower Tie Straps (90-180 No indications identified.
deg)
Gussets (0-90 deg) No indications identified.
Gussets (90-180 deg) No indications identified.
Tie Bars (0-90 deg) No indications identified.
Tie Bars (90-180 deg) No indications identified.
Tubes (0-90 deg) No indications identified.
Tubes (90-180 deg) No indications identified.
Standpipe (0-90 deg) No indications identified.
Standpipe (90-180 deg) No indications identified.
14
Standpipe Gussets (0-90 No indications identified.
deg)
Standpipe Gussets (90-180 No indications identified.
deg)
Standpipe Gussets (180-270 No indications identified.
deg)
Standpipe Gussets (270-360 No indications identified.
deg)
Upper Support Ring (0-90 No indications identified.
deg)
Upper Support Ring (90- No indications identified.
180 deg)
Steam Dryer Tie Bars 4/2002 VT-3 Performed VT-3 of Steam Dryer Tie Bars. No (C1R08) indications identified.
Drain Channel #8 to the 4/2002 VT-3 The existing crack on drain channel #8 to the skirt Skirt (V 16) (C1R08) was measured 7 5/8". No change from the previous outages. This crack was identified in 1/1989 (Cl RO 1). Clinton has been monitoring this crack since CIROl. C1R08 is the baseline for this crack since Clinton has been operating at higher power after C 1R08.
4/2004 VT-3 The existing crack on drain channel #8 to the skirt (C1R09) was measured 8 3/4". It grew 11/8" in one cycle. In C1R08 (4/2002) it was measured 7 5/8". This crack was repaired in C 1R09 (2/2004) using under water welding.
Drain Channel Welds 2/2006 N/A Drain Channel welds were re-inforced from 1/8" to (C1RIO) 1/4" 15
Steam Dryer All Banks, Coverplates, End 2/2004 Best All welds were examined from outside. One minor Panels, Hoods, Drain (C1R09) Effort dent was recorded. No other indications were Channels, Skirt, Top and Tie 4
VT-I/VT-3 4 identified.
Bars etc. from outside. 2/2006 VT-I All welds examined from outside.
(C1Ri0) 1) An indication was observed in the drain channel base material, away from the weld. The indication appears to be a minor mechanical deformation. This indication was evaluated for continued operation.
- 2) Two (2) indications were observed in the dryer bank 5 horizontal weld H3. These indications are located under tie rods 28 and 30. They are 12.75" and 2.25" long. These indications were repaired by stop drill method.
- 3) A linear indication was observed in the dryer upper guide at 0 deg. This indication is 1.6" long.
This indication was evaluated for continued operation.
- 4) Several linear indications were observed in the dryer upper support ring face. They are located at various locations and degrees. These were evaluated for continued operation.
1/2008 VT-I 1) Examination was performed from the outside of (CIRIl) the dryer. A base metal crack was observed adjacent to drain channel 7, weld V-14. Another crack like indication was observed in the skirt adjacent to the V-6 weld, in the area of an access hole patch. Scope was expanded to perform examination from the inside of the dryer.
- 2) Examination was performed from the inside of the dryer using Firefly. The steam dryer inside area of the access hole patches were examined. The inspections observed several linear indications in the base material at all 6 access hole patches. Evaluated for continued operation.
- 3) The upper support ring was examined. Cracking was observed in the upper support ring at the location of 210 inside access hole patch. Evaluated for continued operation.
16
Steam Dryer All Banks, Coverplates, 1/2010 VT-1-89 1) Performed VT-1-89 of 32 Steam Dryer Tie Rods.
End Panels, Hoods, Drain (C1R12) Indication on Tie Rod 28 from C1R 11, has no new Channels, Skirt, Top and growth or new indications.
Tie Bars etc. from outside. 2) Steam Dryer Lower Support Ring Contact area has an indication from a past outage, with no change in ClR12.
- 3) Drain Channels 3, 5, and 7 have indications from previous outages, but have no changes. Inspection was satisfactory.
- 4) The six Steam Dryer Access Holes from CIR1 1 were reinspected, there is no change.
- 5) Banks 1-5 were visually inspected. Bank 5 had an indication found in C I Ri10, there was no change to the indication.
Steam Dryer Lower 12/2011 VT-1-132 Steam Dryer Lower Support Ring Contact area has Support Ring (C1R13) an indication from a past outage, with no change in C1R13.
LPCI Coupling Loops 'A' and 'B' 10/2000 EVT-1 Performed EVT- 1 of LPCI Couplings, both Loops Except weld 6-6b. (C1R07) 'A' and 'B'. No indications were identified.
Loop 'C' 4/2002 EVT- 1 Performed EVT- 1 of LPCI Coupling 'C'. No Except weld 6-6b. (C1R08) indications were identified.
Weld 6-6b's 2/2004 EVT-1 Performed EVT-1 on all 3 loops. No indications (all 3 loops) (C1R09) were identified.
Reinspection 2/2006 EVT-1 No indications were identified.
Loop 'A' Reinspection 1/2010 EVT- 1 No indications were identified.
Loop 'B' 17
Feedwater Spargers r r
FW Sparger End Brackets 4/2002 EVT-1 Performed EVT-I on Feedwater Sparger End (CIR08) Brackets. No indications were identified.
1/2008 VT-i Performed VT-I of End Bracket Bolt Stops only.
(C I RI 1) Evidence of movement and wear were observed on four (4) out of eight (8) End Bracket Bolts. This condition was evaluated and accepted for continued operation.
1/2010 VT-3 Performed VT-3 of End Bracket Bolt Stops only.
(Cl R12) Four out of eight, had evidence of movement and wear from CIR1 1, there was no change in indication sizes.
12/2011 VT-i & Performed VT-1 of End Bracket Bolt Stops only.
(C1R13) EVT-1 Four out of eight, had evidence of movement and wear from CIR 11, there was no change in indication sizes. Performed EVT-1 on Feedwater Sparger End Brackets. No indications were identified.
FW Sparger 4/2002 VT-3 Performed visual inspection of feedwater spargers per (CIR08) NUREG-0619. No indications were identified.
1/2010 VT-3 Sparger was VT-3 inspected at 45, 135, 225, and 315 (C1R12) degrees. No indications were identified.
BWRVIP-75-A Cat "D" Dissimilar Welds Dissimilar Welds, Cat "D" 1/2006 UT Performed UT on 26 DM welds (23 of these contain (CIR10) Inconel 182 buttering). No indications identified.
Dissimilar Welds, Cat "D" 1/2008 UT Performed UT on 5 DM welds (all 5 welds contain (CiRi1) Inconel buttering.) No indications identified.
Dissimilar Welds, Cat "D" 1/2010 UT No examinations required or performed.
(ClR12)
Dissimilar Welds, Cat "D" 12/2011 UT Performed UT on 26 DM welds (23 of these contain (CIR13) Inconel 182 buttering). No indications identified.
18
Reactor Internals InsDection History Plant: Dresden Unit 2 Components in Date or Inspection Summarize the Following Information:
BWVRVIP Scope Frequency of Method Inspection Results, Repairs, Inspection Used Replacements, Reinspections Core Spray Piping 1980s to UT, VT-I IEB 80-13 (1 MIL) VT-I of piping and D2R14 (IMIL) welds in annulus. Indications observed at one lower elbow to riser weld (3P4c) and two collar to shroud pipe welds (3 and 4P8a) in 1995. All flaw lengths verified with UT. Full structural margins met on all three flawed welds for additional cycle. No repairs performed.
3/1998 UT, GE CSI-2000 Inspected with EVT- 1 D2R15 0.0005" supplement for unqualified welds (P8a EVT and P4d). Identified three previously unidentified flaws (IP5, 2P8a and 3P4d) for a total of six flaws. All flaws were analyzed for two additional cycles of operation with no repairs required.
Previously identified flaws were determined to be of the same or less extent than originally sized. IP5 and 2P8a were not visually verified.
10/2000 EVT-1 Core Spray Piping: P8a and P4d, D2R16 EVT-1 @ all four locations. Previous indications have been found on the Core Spray Elbow to Collar on the 2600 Downcomer. The results of the 1999 measurements compared with the two previous 1998 indications are as follows.
It appears that the Collar indication has not changed, while the indication on the elbow is larger this year than was seen in 1998. The noted crack growth was bounded by the previous flaw evaluation and the BWRVIP- 18 crack growth value.
10/2001 UT, GE CSI-2000 inspected a complete D2R17 EVT-1 Target Set and a sample of P4 welds. No new flaws. Growth within Fracture Mechanics Evaluation predictions.
Performed EVT- 1 of undemonstrated welds.
19
10/2003 EVT- 1, Excessive grinding exam of 1-4P4a and b D2R18 VT- I (VT-1). Undemonstrated 1-4P8a and P4d(EVT-1). Flaws are unchanged.
.11/2005 UT, GE CSI-2000 inspected all demonstrated D2R19 EVT-1 welds. Previous flaws re-sized, growth within flaw evaluation and BWRVIP- 18 predictions. EVT- 1 all undemonstrated welds. No new flaws identified.
EVT-1 25% (2) piping bracket assembly welds. NRI.
11/2007 EVT-1 EVT-lof piping welds P1, P2, P3 P8a, D2R20 P8b and 25% of P4a, P4b, P4c and P4d in accordance with BWRVIP-l18. RIs for previous indications in 3P4d, 3P8a, 4P8a.
11/2009 EVT-1 EVT-lof all P1, P2, P3 and 25% of P4a D2R21 & b piping welds in accordance with BWRVIP- 18. NRI.
Performed Core Spray Lower Sectional Replacement on all four lines. Welds P4c & d, P5, P6, P7, P8a & b and P9 all replaced. One P9 weld was examined after the old pipe was removed with no relevant indications. The other three P9 welds were destroyed by the EDM cut and could not be inspected.
10/2011 EVT-1 EVT-lof all P1, P2, P3 and 25% of P4a D2R22 & b piping welds. NRI.
EVT- 1 on piping attachment welds on all four piping braces VT-1/VT-3 Core Spray Lower Sectional Replacement (all 4 lines)
- VT-i of bolting, keepers, ratchet springs, latch springs, lateral pins, and keepers. NRI
- VT-3 of repair hardware. NRI Core Spray Sparger 1980s to VT-I IEB 80-13 (1 MIL) VT-1 of spargers and present (1 MIL) tee-boxes. No indications found.
Future inspections per BWRVIP- 18.
3/1998 EVT-1, End caps, cover plates and tee box D2R16 MVT-1 branch welds were EVT-1 examined (OD). All sparger connections and 20
bracket welds were MVT-1 examined.
NRI.
10/2001 EVT-1, Complete Target Set and 50% of S3 D2R17 VT- 1 welds. No Indications recorded.
11/2005 EVT-1, EVT-1 100% S1; S2; S4. NRI.
D2R19 VT-I VT-i 50% S3. NRI.
VT-1 100% (12) SB. NRI.
11/2009 EVT-1, EVT-1 100% S4. NRI.
D2R21 VT-I VT-1 50% S3. NRI.
VT-1 100% (12) SB. NRI.
S1 and S2 structurally replaced by bracket as part of lower sectional replacement.
Vessel ID Brackets 4/1994 VT-I Section XI inspections of jet pump riser D2R15 brace, dryer, feedwater sparger, core spray, and surveillance capsule holder brackets, performed once per interval.
No indications noted.
3/1998 MVT-1 Inspected Core Spray Brackets per D2R16 BWRVIP recommendations. NRI.
10/2000 VT-1 100% (6) Surveillance Capsule Brackets.
D2R17 NRI.
VT-3 100% (6) Guide Rod Attachments. NRI.
EVT-1 EVT-1 100% (4) Dryer Lugs. NRI.
10/2003 EVT- 1, EVT- 1 100% (4) Dryer Lugs. NRI.
D2R1 8 VT-I Eight feedwater sparger end-brackets VT- 1, NRI.
Eight Core Spray piping bracket welds, EVT- 1, NRI.
11/2005 EVT-1, - EVT-1 100% (8) feedwater sparger end D2R19 VT- I bracket to vessel attachments. NRI.
- VT-1 100% (8) feedwater sparger end bracket lug. NRI.
- EVT- 1100% (8) feedwater sparger end bracket pin tack weld. NRI.
- VT-I feedwater sparger repair at 2400.
RI. Hole in the weld of the repaired nozzle. Accepted as-is.
- EVT-1 25% (2) core spray piping bracket to vessel attachments. NRI.
- EVT- 1100% (4) steam dryer wall support lugs. NRI.
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11/2007 EVT-1 - EVT-1 and VT-3 of 25% of Core Spray D2R20 VT-3 piping brackets (2). NRI
- EVT- 1100% (8) feedwater sparger end bracket pin and nut. RI, some wear identified at pin head to bracket interface on three pins. One nut not tight against shoulder.
11/2009 EVT-1 - EVT-1 of 25% of Core Spray piping D2R21 VT-i brackets (2). NRI
- VT-1 100% (8) feedwater sparger end bracket pin and nut. RI, some wear identified at pin head to bracket interface on six pins.
10/2011 EVT-1 - EVT-1 of 25% of Core Spray piping D2R22 VT-1 brackets (2). VT-1 on bolting of 1 of the VT-3 2 brackets. NRI
- VT-3 of moisture separator and dryer guide rod attachments. Rls for top cone bent on 2000 guide rod and gouge/metal shaving on top cone of 00 guide rod. NRI for attachment welds.
- VT-1 100% (4) dryer wall support lugs.
Gouges noted on 3 of the lugs.
- VT-I on all surveillance sample holder lower brackets and VT-3 on upper brackets. NRI.
Feedwater Sparger 10/2011 VT-I Inspected all eight feedwater sparger end D2R22 bracket pins and nuts. RI, some wear identified at pin head to bracket interface on six pins.
Performed inspections of spargers, arm welds and t-box welds. RI - gouge on sparger. RI - sparger repair hardware previous indication, no change.
Core Shroud 8/1995 EVT-1, UT Inspections per BWRVIP Guidelines of D2R14 all shroud repair design reliant structures prior to installation of comprehensive repair (4 GE designed tie-rod assemblies). Inspection of shroud consisted of EVT- 1 of all ring segment welds (accessible surfaces), EVT-1 of between 43% and 72% of the length of each vertical weld between HI & H2 from OD surface (ID not accessible), UT of between 30% and 50% of the length of each of the 6 beltline vertical welds, 22
EVT-1 of between 43% and 72% of the length of 2 of the 3 vertical welds between H6 & H7 from OD surface (ID not accessible), and UT of 35% of the length of the remaining vertical weld between H6 and H7.
No Reportable Indications.
03/1998 VT-1, VT- Shroud repair hardware inspected per GE D2R15 3 recommendations. NRI.
10/1999 UT & EC UT & EC examinations from the ID with D2R16 the TEIDE 2 manipulator on the core shroud vertical welds V 14, V 15, V 16, V 17, V 18, and V 19 per the requirements of BWRVIP-76 for a repaired shroud.
NRI. Coverages are as follows:
V14: 80.1%
V15: 80.1%
V16: 83.4%
V17: 52.6%
V18: 62.8%
V19: 58.0%
10/2001 EVT- 1 Exelon performed one sided EVT- 1 of all D2R17 vertical welds outside of the beltline with 100% coverage including welds V5, V6, V7, V26, V27 and V28. There were no recordable indications.
11/2005 EVT-1, EVT-1 100% (16) Ring Segment Welds D2R19 VT-I from the OD. NRI. Coverages were 100% except for the following:
V9: 85%
VIl: 95%
V20: 0% (inaccessible due to Jet Pump diffuser)
V21: 90%
V24: 0% (inaccessible due to Jet Pump diffuser)
Attempted EVT- 1 of shroud vertical welds V29, V30, V31, V32. 0%
coverage was achieved due to Jet Pump interference.
Performed 10 year shroud tie rod examination of all four tie rods:
- EVT- 1 of the clevis pin to verify if bottomed in slot and checking contact area for movement. NRI.
- VT-1 of stabilizer assembly contact 23
between the RPV wall and upper contact, mid support, and lower contact. RI @ 20 and 110 degrees. Accepted as-is.
- VT-i of retainer devices at lower support, lower spring to tie-rod connection, upper spring jacking bolts and tie rod nut. NRI.
- VT- I of contact of the stabilizer assembly between the shroud and upper and lower springs. NRI.
- VT-i of the core plate wedge contact.
NRI.
11/2007 UT - Performed UT on the following vertical D2R20 EVT-1 welds with the percent coverage shown:
V14: 19.9%
V15: 85.8%
V16: 90.1%
V17: 35.0%
V18: 84.0% - RI, Accept as-is.
V19: 47.2%
V27: 63.9%
Besides V 18, all other welds NRI EVT-1 of welds V05-V07, V19, V26, V28, V29 and V31. NRI EVT-1 - Shroud repair hardware inspections at VT-3 all four locations. NRI.
11/2009 EVT-1 Two sided EVT-1 on V19. NRI D2R21 10/2011 EVT-1 One-sided EVT- 1 on vertical ring welds D2R22 V1, V2, V3, V4, V8, V9, V10, V11, V12, V13, V20, V21, V22, V23, V24 and V25. NRI.
Shroud Support 3/1993 UT/VT-i Access hole covers proactively replaced D2R13 with GE mechanical design. UT for radial flaws performed prior to replacement. No indications identified.
8/1995 EVT-1, EVT-1 of H8 and H9 for approx 12" at 4 D2R14 VT- I locations of shroud repair hardware attachment areas.
VT-I of both replacement access hole cover assemblies. No indications identified.
3/1998 N/A Not Inspected during D2R15 D2R15 24
10/1999 EVT-1 Core Support Structures, Performed D2R16 EVT- 1 of H8 and H9 Welds per BWRVIP-38 requirements. No Recordable Indications Inspected both Shroud Access Hole Cover repairs, NRI.
11/2005 EVT-1, EVT-1 H8 & H9 from 132-177'. NRI.
D2R19 VT-3 VT-3 H9 100% accessible areas. NRI.
10/2011 EVT- 1 EVT- 1 top side of H8 & H9 welds at D2R22 132-177' and 312-357'. NRI.
VT-I Bolted attachment for both Access Hole Covers. NRI.
Top Guide 8/1995 VT-I VT-1 of 5 cells. NRI.
D2R14 VT-1 of all 4 alignment assemblies. NRI.
VT-I of rim to bottom plate weld at 4 locations. NRI.
3/1998 N/A No inspections during D2R15.
D2R15 10/2000 EVT-1 Top Guide Alignment Pins, EVT 900 and D2R16 2700 and Rim to Lower Plate Weld per BWRVIP-26. No Reportable Indications 10/2003 EVT-1 Top Guide aligner assemblies at 0, 1800 D2R18 VT-i and 2700 welds (EVT- 1) and pin (VT- 1),
NRI 11/2005 EVT-1 Top guide rim weld at 2350 on the D2R19 outboard side of cell 03-30. NRI.
11/2007 EVT-1 Top guide rim welds, aligner pins and D2R20 VT-i sockets at 00 and 900.
10/2011 EVT-1 Top guide rim weld was inspected at D2R22 accessible locations. One RI - a 12" linear indication was identified.
VT-1 The aligner pins and sockets at 1800 and 2700. NRI.
EVT-1 Top guide grid beams were inspected from 10% of the cells (18 cells). NRI.
SLC 11/2005 Enhanced Safe end and nozzle examined. NRI.
D2R19 VT-2 25
11/2007 Enhanced Safe end and nozzle examined. NRI.
D2R20 VT-2 11/2009 Liquid Safe end and nozzle examined. NRI.
D2R21 Penetrant Jet Pump Assembly 8/1995 VT-1 UT Hold down beams, beam bolt keepers, D2R14 lock-plates and retainers; restrainer wedges, stops, and adjusting screws, clamp bolts and keepers; riser brace assemblies, adapters and baffle plate welds, sensing lines and sensing line brackets per various SILS.
Latest inspections were in 1995, with no reportable indications. Inspect 100%
every other (even numbered) outage.
Jet pump beams are UT examined each outage using technique capable of detecting cracking at throat and ears.
One beam found cracked at ear in 1995 and was replaced.
3/1998 UT, EVT-1 D2R15 Beam UTs, NRI.
D2R15 Jet Pump Riser Welds RS-1, 2, 3, 4 and 5 OD Inspected on all ten risers. Riser to JP Pair 15/16 has 1-1/2" long crack in elbow HAZ at RS-1. Evaluated for two cycles of operation without repair. NRI all others.
01/2000 UT, EVT- 1 Jet Pump Beams, UT 100% of Beams D2R16 NRI Riser Brace, Restrainer Bracket, Wedges and Inlet Mixers EVT-1 High/Medium Priority Welds Per BWRVIP-41 sample and inspection requirements. Minor Indications noted.
10/2001 UT, EVT-1 Jet Pump Beams, UT 100%, NRI D2R17 Riser Brace Leaf at RPV wall block on JP#9, upper Rb 4 weld cracked. EVT- I examined 100% scope expansion, no other indications. Checked and found no set screw gaps. Examined for B-N-2.
Measured known RS- 1 crack on riser 15/16. No change in last two cycles.
10/2003 EVT-1 Replaced all 20 Jet Pump Beams with D2R18 BWR4 weldless keeper beams Installed 19 Riser Brace Mitigation clamps one Repair on JP#9.
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Measured flaw on JP#15/16 RS-1.
Increased from 1 1/2" to 2" length.
Identified pup piece present on JP#5/6, 11/2005 EVT-1 VT-1 100% (20) WD-1. NRI.
D2R19 VT- 1 VT-3 100% (20) Jet Pump Bream Tooth VT-3 Engagement. NRI.
VT-1 100% (8) Jet Pump Sensing Line Clamps. RI (2). Teeth not fully engaged. Accepted as-is.
EVT-1 30% (3) RS-4, 5. NRI.
EVT-1 50% (5) RS-1, 2, 3. RI on JP 15/16 RS-1. Size confirmed to be 11/2".
VT-1 100% (20) Jet Pump Riser Brace Clamps. RI (8). Teeth on keepers not fully engaged. Accepted as-is.
EVT-1 AS-1, 2 on Jet Pumps 8, 9, 19 (AS-1 only). NRI VT-I Aux. wedge on VS of Jet Pump 11.
NRI.
11/2007 VT-I - VT-1 100% (8) Jet Pump Sensing Line D2R20 EVT-1 Clamps. RI (7). Teeth not fully VT-3 engaged. Accepted as-is.
- EVT- 1 of six RB-3 welds. NRI
- EVT-1 of RS-1 weld on JP 15/16. RI on previously identified indication. No change in flaw size.
- Swing gate replaced and 2 aux wedges installed on Jet Pump 19.
- VT-3 of IN-5 bolting sets on 10 JPs.
NRI
- EVT- 1 of MX- I welds on 10 JPs. NRI
- VT-1 of 5 JP wedges and swing gate keeper tack welds. One RI on JP 15 swing gate keeper degraded tack weld.
Accepted as-is for one cycle.
- VT-1 of ratchets on eight JP Riser Brace clamps and eight JP Sensing Line clamps. Multiple RIs for incomplete ratchet teeth engagement. Accepted as-is.
11/2009 EVT-1 - EVT-1 25% (5) RB-4 & 5. NRI D2R21 VT-I - EVT-1 30% (3 risers) RS-8 & 9. NRI
- EVT-I JP 15/16 RS-1. Previous indication - No change
- EVT-1 25% (5) MX-3a and 40% (8)
MX-3b. NRI
- VT-1 25% (5) WD-1. NRI
- VT-I three aux wedges. Minor wear 27
identified on one wedge. Accepted-as-is for one cycle.
- VT-I on five swing gate keepers/ratchets. One RI for crack in tack weld HAZ and Two RIs for small gap between gate and restrainer bracket.
- VT-1 two sensing line clamps and one sensing line. No change to previous indications.
- Replaced JP 15 swing gate.
10/2011 EVT-1 - EVT-1 30% (6) RB-3. NRI D2R22 VT-I - EVT-1 70% (7 risers) RS-8 & 9. NRI
- EVT-1 60% (6 risers) RS-1 & JP 5/6 RS-la. JP 15/16 RS-1 previous indication - No change
- EVT-1 50% (5 risers) RS-2 & 3. NRI
- EVT-1 30% (3 risers) RS-4 & 5. NRI
- VT-i 75% (15) WD-1. NRI
- VT-I on JP 19 aux wedges. NRI
- VT-1 on seven swing gate keeper tack welds or ratchets. One RI for crack in tack weld HAZ (no change from D2R21).
- VT-I two sensing line clamps. RI for ratchet teeth engagement and clamp movement.
- EVT- 1 inspections of cast austenitic stainless steel components on one jet pump for License Renewal commitment.
NRI Jet Pump Diffuser 8/1995 VT-I Diffuser to baffle plate welds on all 20 jet D2R14 pumps. No indications.
3/1998 N/A Not inspected D2R15.
D2R15 01/2000 EVT-1 JP Diffuser EVT-1 High/Med Priority D2R16 welds per BWRVIP-41 sample and inspection requirements. NRI 10/2001 EVT-1 No scope D2R17.
D2R17 10/2003 UT, EVT-1 UT examined Jet Pumps# 2, 3, 4, 5, 8, 9, D2R18 12, 13, 14, 15, 18 and 19. This completes first 6 Year Inspection Interval. NRI EVT-1 of the last of the Medium Priority 50% sample also completed. NRI.
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11/2005 N/A Not inspected in D2R19.
D2R19 11/2007 N/A Not inspected in D2R19.
D2R20 11/2009 EVT-1 - 25% (5) DF-1 and 50% (10) DF-2. NRI D2R21 - 50% (10) AD-1, AD-2 and AD-3a. NRI CRD Guide Tubes 8/1995 VT-I II CRD guide tube lower assembly D2R14 (1 MIL) welds, 2 CRD guide tube upper assembly welds, 4 CRD guide tube alignment ear welds. NRI.
3/1998 N/A Not inspected D2R15.
D2R15 01/2000 N/A Not inspected D2R 16 D2R16 10/2001 EVT-1, 5% inspected (9) per BWRVIP-47, D2R17 VT-3 CRGT-1, 2, 3 and pin. NRI.
11/2005 N/A Not inspected in D2R1 9.
D2R19 11/2007 EVT-1, Inspected 5% (9) of the control Rod D2R20 VT-3 Guide Tube Welds and Guide Tube and Fuel Support Alignment Pins. VT-3 on the CRGT- I and AS-GT-ARPIN- 1.
EVT-I of the CRGT-2 and 3. NRI 10/2011 EVT-1 One guide tube base and one fuel support D2R22 piece were inspected as part of a License Renewal commitment for cast austenitic stainless steel components. NRI CRD Stub Tubes 8/1995 VT-1 (1 14 CRD housing to CRD stub tube D2R14 MIL) welds, 14 CRD stub tube to RPV bottom head welds, 3 CRD housing tube to housing cap welds. NRI.
3/1998 Not inspected D2R1 5 D2R15 10/2000 Not inspected D2R 16 D2R16 10/2001 Stub Tubes not inspected D2R17 D2R17 29
10/2003 Stub Tubes not inspected D2R1 8 D2R18 11/2005 Not inspected in D2R19.
D2R19 In-Core Housing 8/1995 VT-I (1 4 incore guide tube to housing welds, 4 D2R14 MIL) incore housing to RPV bottom head welds, 4 incore guide tube stabilizers.
NRI.
3/1998 Not inspected D2R15 D2R15 11/2005 N/A Not inspected in D2R19.
D2R19 Dry Tubes 8/1995 VT-I No indications identified.
D2R14 Examined every other outage.
3/1998 Not examined D2R15.
D2R15 10/2000 VT- 1 NRI.
D2R16 11/2007 VT-1 50% of SRM and IRM dry tubes D2R20 inspected. NRI 11/2009 VT-1 50% of SRM and IRM dry tubes D2R21 inspected. NRI 10/2011 VT-1 50% of SRM and IRM dry tubes D2R22 inspected. NRI Instrument N/A Penetrations LPCI Coupling N/A Steam Separator/ 11/2007 VT-1 Inspected 100% of Shroud Head Bolt Shroud Head D2R20 Alignment Pins and Windows. RI for one missing pin and pin/window wear on multiple shroud head bolts 11/2009 VT-i - VT-I Inspected 100% of Shroud Head D2R21 EVT-1 Bolt Alignment Pins and Windows. RI for pin/window wear on multiple shroud head bolts
- EVT- 1 on Steam Separator Guide Rod 30
top cone. RI for cracked tack weld.
Acceptable-as-is.
10/2011 VT- 1 - VT- I Inspected 100% of Shroud Head D2R22 Bolt Alignment Pins and Windows. RI for pin/window wear on multiple shroud head bolts Steam Dryer 11/2005 VT- 1 "best Performed BWRVIP-139 required D2R19 effort" inspections as well as inspections of high-stress areas as determined by GE models. Internal start-up instrumentation piping was also examined. Several RI, including:
- Four of six gusset feet tip (adjacent to R2 weld), ranging from 7 to 11.5".
Cracking was ground out and rewelded.
Gusset feet extensions were designed and installed to transfer the stress riser to the mid-support ring.
- Several internal strut/supports were identified with cracking. Several were historical from D2R1 8 inspections. No change in the cracking was observed.
These welds are non-structural.
Accepted as-is.
- Vertical guide cracking (2) at 2200.
Both cracks (2.5-5" in length) were stop-drilled.
- Lower instrument line in Bank C observed cracking at the weld.
Performed fracture mechanics analysis and lost parts analysis. Acceptable as-is.
- Interior drain channel cracking (3).
Performed GE analysis. Acceptable as-is.
- Perforated plate weld cracking.
Performed GE analysis. Acceptable as-is.
- Perforated plate bowing. Performed GE analysis. Acceptable as-is.
11/2007 N/A Replaced steam dryer with a new one.
D2R20 11/2009 "Best Examined critical components on steam D2R21 Effort" dryer ID and OD after one cycle of VT-1 operation per GE recommendations. NRI 10/2011 "Best Examined OEM recommended 31
D2R22 Effort" components on OD. Lifting lug at 400 VT-I found rotated. Gouge identified on dryer skirt.
DM Welds 11/2009 No inspections in D2R21 D2R21 10/2011 UT Inspected six DM welds. NRI D2R22 32
Reactor Internals Inspection History I Plant: Peach Bottom Atomic Power Station, Unit 3 Components in Date or Inspection Summarize the Following Information:
BWRVIP Scope Frequency of Method Inspection Results, Repairs, Replacements, Inspection Used Reinspections Core Shroud 1993 VT-I Enhanced VT-1 (1 mil resolution) (100% ID of H-3, H4, & V-3) portions OD of H-i, H-2, H-3, H-4, H-5, H-6, and H-7 Prior to BWRVIP-01, Circumferential Indications on ID of H-3 and H-4 (Plate side, not ring side)
Short circumferential indications on ID of V-3 weld.
Evaluation of indications showed full structural margins for one operating cycle.
1995 UT Comprehensive UT Baseline of all Category "C" circumferential welds (H-I through H-7).
Baseline per BWRVIP-01, Rev. 1.
Exams per BWR-VIP Core Shroud NDE Uncertainty and Procedure Standard, dated November 21, 1994.
Indications identified on ID of H-i, H-3, H-4, and H-5.
Full structural margins calculated using two cycles of crack growth.
No indications identified on H-2, H-6, and H-7.
1999 UT UT Examination on welds H-3 & H-4. Re-identified indications on both welds. Extent of indications within existing structural analysis.
2005 UT Two-sided UT of all 7 horizontal welds (HI thru H7) and 4 vertical welds (V3 thru V6). No indications at H2, H7, V4-V6 or ring side of any weld. One minor indication near V3. Indications at Hi, H3, H4, and H5 correlated with those previously identified. One indication at H6 (new).
One deep indication at H4. Characterized as thru-wall. Review of previous data (1995 and 1999) also characterized indication as thru-wall at that time. EVT-1 on OD surface did not identify any indications.
33
QI,_ A Q 1 00'2 UTT 1 VU L LPu,-,L V 1" Enhanced VT-I (1 mil resolution), of portions of H-8 weld, No indications identified.
VT-I examination around perimeter of both access hole covers, No indications identified.
1997 VT- 1 VT- I of both access hole cover bolted repairs. No indications identified.
1999 EVT-1 10 % of weld length of welds H-8 &
H-9 examined.
No indications identified.
2001 UT 10% of H-9 weld length from vessel O.D.
No indications identified.
VT-1 VT-I of both access hole cover bolted repairs. No indications identified.
2005 EVT-1 > 10% of H-8 weld, between jet pump banks, in area of AHCs.
VT-1 VT-I of both access hole cover bolted repairs. No indications identified.
UT Accessible length of H-9 between 0 and 180 degrees.
No indications identified.
2009 VT-I VT-I of both access hole cover bolted repairs. No indications identified.
2011 EVT-1 > 10% of weld length for H-8 & H-9 welds, between jet pump banks, in area of AHCs. No indications identified Core Spray Piping 1980-present VT-i Enhanced VT-I (1 mil resolution) performed on (1 mil) piping and welds each refueling outage per IEB 80-13, 1985 VT-I Cracking discovered at tee-box to header pipe (1 mil) weld.
Welded repair plates installed on both header tee-boxes.
1993 VT- I Cracking identified in downcomer slip joint (1 mil) (weld P-5), evaluation demonstrated structural margin for one operating cycle.
34
1995 VT-I Additional cracking identified in 3 of 4 (1 mil) downcomer slip joint welds (P-5), repair clamps installed on all 4 downcomers to repair flawed welds.
1997 VT-1 4 Downcomer repair clamps, no indications identified.
EVT-1 All annulus piping welds, no indications identified.
1999 VT-1 VT-I Examination of A, B, C & D Downcomer Repair Clamps & both Header Teebox welded repairs.
No indications identified.
2001 VT-1 All target welds plus 25 % sample of piping butt welds examined.
No indications identified.
EVT-1 EVT- 1 of all target welds plus 25% sample of butt welds examined. No indications identified.
2003 VT-1 Four downcomer repair clamps.
EVT-1 EVT-1 of all target welds plus 25% sample of butt welds. No indications identified.
2005 EVT-1 Four Header Tee Box strong back repair plate welds.
EVT- 1 of all target welds plus 25% sample of butt welds. No indications identified.
2007 EVT-1 Four Header Tee Box strong back repair plate welds.
EVT- 1 of all target welds plus 25% sample of butt welds. No indications identified.
VT-I Four downcomer repair clamps.
2009 EVT-1 Four Header Tee Box strong back repair plate welds.
EVT- 1 of all target welds plus 25% sample of butt welds. No indications identified.
2011 EVT-1 Four Header Tee Box strong back repair plate welds.
EVT- 1 of all target welds plus 25% sample of butt welds. No indications identified.
VT-I Four downcomer repair clamps.
35
Core -Spray Sparger 1980-present VT-I Enhanced VT-I (1 mil resolution) performed on (1 mil) piping and welds each refueling outage per IEB 80-13, No indications identified.
1999 EVT-1 Examination performed on all Sparger Pipe welds.
VT-I Examination performed on all Brackets, Drains and 50 % of Nozzles.
No indications identified.
2003 EVT-1 Examination performed on all Sparger Pipe welds.
VT-I Examination performed on all Brackets, Drains and 50 % of Nozzles.
No indications identified.
2007 EVT-1 Examination performed on all Sparger Pipe welds.
VT-1 Examination performed on all Brackets, Drains and 50 % of Nozzles.
No indications identified.
2011 EVT-1 Examination performed on all Sparger Pipe welds.
VT-I Examination performed on all Brackets, Drains and 50 % of Nozzles.
-1.0" Indication noted on the shroud side of the 136 degree bracket weld 4
Top Guide (Rim, etc.) 1987 UT UT examination performed on 40 cells.
No indications identified 1993 VT-3 Visual (VT-3) examination of 9 cells (02-19, 46-11, 42-59, 58-19, 02-39, 10-51, 18-03, 22-03, and 58-35), per SIL 554.
No indications identified.
1995 VT-3 Visual (VT-3) of 3 cells (14-23, 22-3 1, and 46-
- 23) per SIL 554.
No indications identified.
1976-present VT-3 VT-3 examination every other refueling outage per Section XI.
No indications identified.
36
1997 VT-3 Top Guide Grid examined from above, no indications identified.
VT-1 Adjacent aligner pins at 180 and 270 deg.(per VIP-26), no indications identified.
2009 EVT-1 EVT- 1 of five top guide cell locations per BWRVIP- 183 requirements. No indications identified.
2011 EVT-1 EVT- 1 of fourteen top guide cell locations per BWRVIP- 183 requirements. No indications identified.
Core Plate (Rim, etc.) 1995 VT-3 VT-3 examination of hold down bolt retainers planned, deferred to 1997.
1997 VT- I Examined 18 of 34 bolts/retainers from above.
No indications identified.
2011 VT-3 Examined 9 of 34 bolts/retainers from above. No indications identified. This satisfies the 25%
commitment from the submitted Deviation Disposition SLC 1997 UT UT of nozzle to safe end planned for 1997, per BWRVIP recommendations PT & UT PT & UT of nozzle to safe-end weld, no indications identified.
2003 PT Extended dwell time PT of SLC nozzle to safe end weld and entire safe end.
No indications identified.
2007 PT PT of SLC nozzle to safe end weld.
No indications identified.
2011 UT UT of SLC nozzle to vessel and nozzle to safe end weld. No indications identified Jet Pump Assembly 1974 to VT-3 Visual VT-3 of all jet pump components present performed every other refueling outage.
No indications identified.
1981 VT & UT VT and UT examination performed on all 20 hold down beams/
One beam found to be cracked, replaced with 37
new style beam, All beams replaced with new style beam and reduced preload in 1988.
1997 VT-3 VT-3 all 20 jet pump assemblies (all parts),including CSVT-I (MVT-1) of 10 riser braces, including all welds. No indications identified.
CSVT-1 CSVT-1 (MVT-1) all 10 thermal sleeve to riser (MVT-1) elbow welds, plus UT on pumps 1/ 2, 9/10, 13/14 due to indications on thermal sleeve side of these welds.
MVT-1 on welds RS-2 & RS-3 of three risers w/
indications @ 30, 150, and 300 degrees.
Evaluation of indications justified continued operation for part cycle.
1999 UT Examinations performed on all 20 hold down beams. Reportable indications observed on hold down beam for jet pump # 20. Beam replaced.
No other indications identified.
EVT-1 Examination of high priority Adapter welds on Jet Pumps 1-10.
Reportable indications on welds (AD-3b ) of Jet pumps 2 & 10. BWRVIP -41 evaluation resulted in use-as-is disposition. Expanded examinations to weld AD3b on Jet Pumps 11-20. No other indications identified.
EVT- 1 examination of high priority Diffuser Shell to Tailpipe Welds (DF-2) of Jet Pumps 1-
- 10. No indications identified.
Examination of Riser welds RS-2 & RS-3 of Jet Pump Assemblies 2, 3 & 4.
No indications identified.
2001 EVT-1 Reexamined weld AD-3b on Jet Pumps 2 & 10.
indications remain bounded by existing flaw evaluation.
All 20 WD- 1 locations examined. 16 high priority and 45 medium priority welds on inlet mixers, diffusers, and riser braces also examined.
No indications identified.
2003 VT-I VT-I of all twenty hold down beam ratchet lock keepers (replaced in 2001). VT-i all twenty WD-1 main wedge locations, since all inlet mixers 38
were removed in 2001, Two auxiliary spring wedges installed in 2001, and the RS-l repair clamp on JP 1 & 2 and 13 & 14.
No indications identified.
Jet Pump Assembly EVT-1 Reexamination of indication at RS-I weld on JP 9 & 10.
Minimal change in flaw size. Structural reevaluation completed for continued acceptability.
104% of High priority welds completed.
72% of Medium priority welds completed No indications identified.
Indication identified in backing ring below AD-3a weld on JP 18. Structural evaluation found acceptable for continued operation.
2005 UT Two-sided UT of all diffuser and adapter welds (100) from I.D. Identified 4 small OD originating indications associated with the AD-3b fillet weld (2 previously ID'd). Structural and leakage evaluation proved acceptability for numerous operating cycles.
VT- I VT- I of five main wedges. No wear identified.
EVT-1 EVT-1 of 16 medium priority welds. No indications identified.
EVT-1 of 3 existing indications. No appreciable change in indication size.
2007 VT-1 VT-i of 10 main wedges and 2 RS-1 riser repair clamps. No indications identified.
EVT- 1 EVT- 1 of 30 medium and high priority welds, 1 existing RS-1 weld indication and 12 riser brace welds. No growth of existing indication noted.
Small indications identified at the RS-1 weld of two risers. Structural and leakage impact evaluations found indications acceptable for continued operation. No other indications identified.
Jet Pump Assemblies 2009 VT- I VT- I of 6 main wedges. Minor wear identified on 3 wedges. Expanded scope to examine all 20 main wedges and performed examinations on additional locations (AS-1/2, RS-6/7, RS-8, RS-9, MX-7) on the 3 JPs with identified wear. Two 39
set screw gaps identified. No additional indications in expanded scope exams. No repair hardware required.
EVT- 1 EVT- 1 of 31 medium and high priority welds.
3 existing RS-1 flaws were examined.
- 1 existing indication exhibited no growth and was evaluated as acceptable for two cycles of continued operation.
- 1 existing indication exhibited growth and was evaluated as acceptable for two cycles of continued operation.
- 1 existing indication was determined to be the toe of the weld. No indication exists.
No other indications identified.
VT-3 VT-3 of two aux spring wedges. No indications identified.
2011 VT-1 A VT-I of the BB-4 regions of all 20 JP hold down beams was performed with no indications identified. VT-I examinations were performed on the following components with no indications identified: JP 01/02 RS-1 clamp, JP 13/14 RS-1 clamp, JP 04 MX-7 and JP 10 MX-7. Recordable indications were identified on 10 JP wedges, 3 wedges were existing wear no change, 2 JPs had new minor wedge wear and 5 had minor rod wear.
EVT-1 EVT- 1 of 53 medium and high priority locations
- 2 existing RS-1 flaws were examined with no change in length
- Set screw gaps identified on JP 03, 04 and 05 UT 16 Hybrid Group 2 Hold Down Beams were examined no indications identified.
Jet Pump Diffuser See Jet Pump Assembly.
CRD Guide Tube 1985 VT-3 VT-3 PSI examination of 4 replacement CRD housings.
1987 VT-3 VT-3 examination of one of replaced housings.
No indications identified.
1991 VT-3 VT-3 examination of housings accessible from 40
fuel cells 26-31 and 30-27.
No indications identified.
1999 VT-3 VT-3 examination on Guide Tube welds CRGT-1
& Alignment Pin weld (Core Locations: 14-15, 14-31, 14-47, 18-19, 18-27, 18-35, 18-43, 26-11, 34-35, 42-19)
No indications identified.
EVT-1 EVT- 1 examination on Guide Tube welds CRGT-2 & 3 (Core Locations:14-15, 14-31, 14-47, 18-19, 18-27, 18-35, 18-43, 26-11, 34-35, 42-19)
No indications identified.
2003 EVT-1 Best effort EVT-1 on Guide Tube welds CRGT-2
& 3 (Core locations: 10-35, 22-27, 22-35, 30-23, 30-31, 30-39, 38-27, 38-31, 38-35, and 42-31) No indications identified.
VT-3 VT-3 examination on Guide Tube welds CRGT-1
& Alignment Pin weld (Core Locations: 10-3 5, 22-27, 22-35, 30-23, 30-31, 30-39, 38-27, 38-3 1, 38-35, and 42-31) No indications identified.
2005 EVT-1 EVT-1 on Guide Tube welds CRGT-2 & 3 (Core locations: 22-39, 38-39, 14-35, 46-35, 46-27, 22-23, and 26-11) No indications identified. CRGT-3 (22-39) later disqualified.
VT-3 VT-3 examination on Guide Tube welds CRGT-1
& Alignment Pin weld (Core Locations: 22-39, 38-39, 14-35, 46-35, 46-27, 22-23, and 26-11)
Alignment pin weld also at 14-27 and 38-23, No indications identified.
CRD Guide Tube 2007 EVT-1 EVT-1 on Guide Tube welds CRGT-2 (Core (cont.) locations 22-03, 30-15, 42-03, 46-55, 58-39) and CRGT-3 (Core locations 22-03, 30-15, 42-03, 46-55, 58-39). No indications identified.
Verification of CRGT-1 (Core locations 22-03, 30-15, 42-03, 46-55, 58-39) alignment pins and alignment lug welds.
No indications identified.
_ 2009 I EVT-1 EVT-1 on Guide Tube welds CRGT-2 (Core 41
locations 14-31, 22-31, 22-59, 30-47, 50-51)
No indications identified.
CRD Stub Tube 1991 VT-3 VT-3 of accessible portions of 12 stub tubes (30-35, 26-35, 22-35, 22-31, 22-27, 26-27, 26-23, 30-23, 34-23, 34-27, 34-31, 30-31).
No indications identified.
In-Core Housing 1991 VT-3 VT-3 of housings accessible from fuel cells 26-31 and 30-27.
No indications identified.
Dry Tube 1997 N/A All Dry Tubes replaced in 1985.
All IRM and SRM tubes replaced w/ Wide Range Monitoring tubes in 1997. No inspections required.
Instrument 1976 to PT PT examination performed on all instrument Penetrations present nozzle to safe end welds once per interval, per Section XI.
No indications identified.
1997 PT PT nozzle to safe-end (coupling) & safe-end to pipe welds on 2 nozzles. (N12A & N12B). No indications identified.
2001 PT PT nozzle to safe-end (coupling) welds on 2 nozzles. (N I1A & NI6A). No indications identified.
Vessel ID Brackets 1976 to VT-i or VT-1 and VT-3 of all ID bracket welds present VT-3 performed once per interval No indications identified.
1997 VT-i All 10 Jet Pump riser brace to vessel welds, no indications identified.
1999 EVT-1 EVT-1 examination performed on 8 Core Spray Bracket Pads @ 15, 117, 123, 165, 195,237, 243
& 345 AZ.
No indications identified.
2001 EVT-1 EVT-I examination performed on 4 Feedwater Sparger brackets @ 4, 56, 64, and 116 Az., 3 Jet 42
Pump Riser Braces @ 90, 120, and 150 AZ., and 2 Steam Dryer Support Brackets @ 4, and 94 AZ.
No indications identified.
2003 VT-i Lower Surveillance Specimen brackets at 300, 1200, and 3000.
VT-3 Upper Surveillance brackets at 300, 1200, and 3000.
Guide Rod brackets at 00 and 1800.
EVT-1 & Steam Dryer support brackets at 1840 and 2740.
VT-3 EVT-1 Jet Pump riser brace to vessel welds JP 9/10 and JP 13/14.
No indications identified 2005 EVT-1 8 Feedwater sparger bracket welds and 16 jet pump riser brace welds. No indications identified.
2007 EVT-1 8 Core Spray pipe support brackets and one jet pump riser brace. No indications identified.
VT-3 4 Steam dryer hold down bracket welds. No indications identified.
2011 EVT-l Steam dryer support brackets at 0040, 094',
1840and 2740 were examined with minor wear and rub marks found. The conditions were evaluated acceptable.
The upper guide rod bracket attachment welds at 00 and 1800 were examined with no recordable indications identified.
The feedwater sparger brackets at the 0300, 090%,
1500, 2100, 2700 and 3300 sparger locations were examined with no recordable indications identified.
The jet pump riser brace to vessel welds for JPs 01/02, 09/10, 11/12 and 13/14 were examined with no recordable indications identified.
LPCI Coupling N/A for this plant Steam Dryer 2003 VT-3 VT-3 of the entire top of the dryer (including all upper tie bars) and the 2 outer bank hoods and cover plates.
VT- I VT- 1 of 5 new central bank upper tie bars (added in 2001), 2 stop-drilled indications at the lower 43
guide rod followers, and all GE SIL 644, Supp. 1 locations on outer bank hoods.
No indications identified. All previous repairs were satisfactory.
2005 VT- I Completed all remaining BWRVIP- 139 recommended inspections (68 locations). No indications identified.
2007 VT-I VT-I of 23 high stress welds and all upper tie bars. No indications identified 2009 VT- 1 Re-examination of six "red" end bank welds, two "green" drain channel welds, and welds on four lifting lugs per BWRVIP-139-A. No indications identified 2011 VT-1-89 Examinations were performed on the end panel plate to cover plate weld, end panel plate to sloped hood plate weld and end panel plate to vain cap plate weld on both the left and right end of bank 6 of the steam dryer. No recordable indications were identified. The lifting rods at 045', 135', 225°and 315' were examined with no recordable indications.
Steam Separator 2007 VT-I VT-I examinations performed on a sample of upper and lower shroud head bolt support ring gussets. No indications identified.
2009 VT-I VT-I examinations performed on a sample of upper and lower shroud head bolt support ring gussets. No indications identified.
2011 VT-1-89 Examinations were performed at four locations on both the lower support ring gussets and the upper support ring gussets. No recordable indications were identified. Examinations were performed on the separator standpipe tie straps minor historic damage was observed conditions were acceptable. A VT-I examination was performed on shroud head bolt 07, indicator window and pin wear observed. As a result, SHB 07 was removed. The four lifting lugs were examined with no recordable indications identified.
44
Dissimilar Metal 2009 No examinations scheduled.
Welds (BWRVIP-75-A) 2011 No examinations scheduled.
45
Reactor Internals Inspection History Plant: Vermont Yankee Components in Date or Inspection Summarize the Following Information:
BWRVIP Scope Frequency of Method Inspection Results, Repairs, Replacements, Inspection Used' Reinspections CRD Guide Tube 1995 N/A None.
1996 N/A None.
1998 N/A None.
1999 N/A None.
2001 EVT-1 Circumferential welds (CRGT-2 and CRGT-
- 3) on four of 89 guide tubes. No indications.
2001 VT-3 Lugs and pin assemblies on four guide tubes.
No indications.
2002 N/A None.
2004 EVT-1 Circumferential welds (CRGT-2 and CRGT-
- 3) on guide tube 10-19. No indications.
2004 VT-3 Lugs and pin assemblies guide tube 10-19.
No indications.
2008 EVT-1 Circumferential welds (CRGT-2 and CRGT-
- 3) on eight guide tubes. (14-15, 14-23, 14-31, 22-15, 26-15, 30-15, 30-23 & 30-31). No indications.
2008 VT-3 Lugs and pin assemblies on all eight guide tubes listed above. No indications.
CRD Stub Tube 1 1983 VT-3 1 2 of 89. No indications.
The following License Renewal Commitments contain specific requirements concerning examination methods for Feedwater Nozzles (A- 16913); BWR Penetrations (A- 16914); Stress Corrosion Cracking (A- 16915); Vessel ID Attachment Welds (A- 16916); BWR Vessel Internals Program (A- 16917); and the ISI Program (A- 16926).
46
Core Plate 1995 VT-3 10 fuel support castings. No indications.
1996 VT-3 Seven fuel support castings. No indications.
1996 VT-3 All 30 rim hold-down bolts from above. No indications.
1998 VT-3 Four fuel support castings. No indications.
1999 VT-3 16 rim hold-down bolts from above. No indications.
2001 VT-3 15 rim hold-down bolts from above. No indications.
2002 VT-3 15 rim hold-down bolts from above. No indications.
2004 VT-3 15 rim hold-down bolts from above. No indications.
2007 VT-3 /EVT- 8 rim hold-down bolts and tack welds, view 1 from above, no indications.
2008 VT-3 24 Core Plate Plugs. RI - Plugs unseated at 16-33S,16-33E & 16-25N.
2010 VT-3 All 58 Core Plate Plugs replaced. Post installation inspection performed - NRI.
2010 VT-3/EVT- 7 rim hold-down bolts and tack welds, view 1 from above, no indications.
2011 VT-3/EVT- 8 rim hold-down bolts and tack welds, view 1 from above, no indications.
2011 VT-3 11 core plate plugs with acceptable levels of blow by identified - no other recordable indications Core Shroud 1995 UT Seven circumferential welds. Significant indications found in H5 and H6, less extensive in H4. Very minor indications in Hi, H2, and H3.
1996 UT, ET Six vertical welds (all welds between H3 and H7). No indications.
1996 EVT-1 Two vertical welds (both welds between HI 47
and H2) - OD only. No indications.
1996 UT, ET Six ring-segment welds (all three at top guide and all three at core plate). No indications.
1996 VT-3 Four tie-rods (repair) installed. Baseline inspection performed.
1998 VT-3 Retorqued, reinspected all four tie-rods.
1999 VT-3 Reinspected all four tie-rods.
2001 N/A None.
2002 VT-3 Ten-year ( 3 rd Interval) Category B-N-2 core support structure inspection. No indications.
2004 EVT-1 2' sections in four quadrants of HiI, H2, and H3. All six vertical welds between H3 and H7. All three ring-segment welds at core plate. No indications. EVT-1 exams were from the shroud OD.
2004 VT-3 Two tie-rods. No indications.
2005 EVT-1 Top Guide ring segment welds (3 welds)
(NRI) 2007 UT & EVT1 Design Reliant portions of HiI, H2, H3; RI, evaluated no repair required 2007 UT 100% accessible of Vertical Welds S4VI&V2, S5VI&V2,S7V1&V2 NRI 2011 EVT-1/ VT- Tie rods at 45 and 315 azimuths with no 3 recordable indications 2011 EVT- 1 Portions of H8 and H9. No indications.
Portions of 2SV1 and 2SV2 from the ID and OD, with no indications. Ring segment welds S3Rl, S3R2 and S3R3 from the ID and OD with no indications. During ring segment weld exam, -4" linear indication was found on and adjacent H3 weld in the field of view.
Core Shroud Support 1995 VT-1 Both access hole covers. No indications.
1996 UT, ET H8 (25%) & H9 (22%). No indications.
48
1996 VT-1 Both access hole covers. No indications.
1998 MVT-1 Both access hole covers. No indications.
1999 EVT-1 Both access hole covers. No indications.
2001 N/A None.
2002 EVT-1 Both access hole covers. No indications.
2002 VT-3 Ten-year ( 3 rd Interval) Category B-N-2 core support structure inspection. No indications.
2004 N/A None.
2005 EVT-1 10 % of H8 & H9 at 0 and 180 Degree locations. (NRI) 2005 EVT-1 Access hole Cover at 180 degree location (NRI) 2005 EVT-1 Core Shroud vertical welds SC-V1 and SC-V2 (from outside the shroud) (NRI) 2005 VT-3 Annulus FOSAR (NRI) 2007 EVT-1 SSC-V1 & V2 (Shroud support cylinder vertical welds) NRI 2007 VT-3 Annulus FOSAR (NRI) 2007 EVT-1 Access hole Cover at 0 degree location (NRI) 2008 VT-3 Annulus FOSAR (NRI) 2010 EVT-1 Access hole Cover at 0 and 180 degree location (NRI) 2010 VT-3 Annulus FOSAR (NRI)
Core Spray Piping 1995 CSVT-1 All piping and brackets. No indications.
1996 UT 39 circumferential welds. Two collar-to-shroud welds (P8b) with indications.
1996 EVT-1 Five circumferential welds not accessible for UT. No indications.
1996 CSVT-1 All brackets. No indications.
49
1998 EVT-1 Re-inspected eleven circumferential welds:
two with previous indications, nine that were inaccessible for full UT in '96. No indications.
1999 EVT-1 Re-inspected 30 circumferential target welds.
No indications.
2001 EVT-1 Re-inspected 32 circumferential target welds.
No indications.
2001 UT Four P9 welds. These UT inspections were invalidated by further BWRVIP qualification work performed May 2002.
2002 EVT-1 Re-inspected 34 circumferential target welds.
No indications.
2002 EVT-1 Inspected all four piping brackets and attachment welds. No indications.
2004 EVT-1 Reinspected 34 circumferential target welds.
No indications.
2005 EVT-1 Reinspected 34 circumferential target welds (NRI) 2007 EVT-1 Reinspected 34 circumferential target welds (NRI) 2007 UT 1P8b weld No change in flaw size acceptable without repair 2007 N/A Pre-Emptive Clamp Repair installed on 3P8b weld.
2008 EVT-1 Re-inspected 30 circumferential target welds.
No indications.
2008 EVT-1 Re-inspected 4 piping brackets and attachment welds. No indications.
2008 VT-1 Core Spray 3P8b weld clamp repair. No indications.
2010 EVT-1 Re-inspected 30 circumferential target welds.
NRI.
50
2010 VT-I Core Spray 3P8b weld clamp repair. No indications.
2011 EVT-1 Re-inspected 31 circumferential target welds.
NRI.
2011 VT-1 Core Spray 3P8b weld clamp repair. No indications.
Core Spray Sparger 1995 CSVT-1 100% IEB 80-13 inspections performed. No indications.
1995 VT-3 Repair clamp over tee-box plug (cracked weld) installed in 1980. No indications.
1996 CSVT-1 100% IEB 80-13 inspections performed. No indications.
1996 VT-3 Sparger tee-box repair. No indications.
1998 MVT-1 17 of 20 large (tee-box to header, tee-box cover plate, and header to end cap)
Q circumferential welds (3 inaccessible). No indications.
1998 VT-3 Sparger nozzles. No indications.
1998 VT-3 All twelve brackets. No indications.
1999 VT-3 Sparger Tee-box repair. No indications.
2001 EVT-1 17 of 20 large circumferential welds mostly limited exams (3 inaccessible). No indications.
2001 VT-I 50% of nozzles. No indications.
2002 VT- I Inspected all 12 core spray sparger brackets.
No indications.
2004 EVT-1 17 of 20 large (tee-box to header, tee-box cover plate, and header to end cap) circumferential welds. No relevant indications.
2004 VT-I Nozzles on two of four spargers. Sparger tee-box repair. No relevant indications.
2005 VT-I Re-Inspected all 12 Core Spray Sparger 51
Brackets. (NRI) 2007 EVT-1 20 of 20 large (tee-box to header, tee-box cover plate, and header to end cap) circumferential welds and drain holes. NRI 2007 VT-I Nozzles on two of four spargers. Sparger tee-box repair. NRI 2008 VT-1 Re-Inspected all 12 Core Spray Sparger Brackets. (NRI) 2010 EVT-1 20 of 20 large (tee-box to header, tee-box cover plate, and header to end cap) circumferential welds. NRI 2010 VT-I Nozzles and drain holes on A and B spargers.
NRI 2010 VT-I Sparger tee-box repair. NRI 2011 VT-I Sparger tee-box repair. NRI Feedwater Spargers 1995 MVT-1 Tee-box welds and end bracket attachment welds. No indications.
1996 N/A No FW sparger inspections performed.
1998 VT-3 Piping and brackets. No indications.
1998 MVT-1 Tee-box welds and end bracket attachment welds. No indications.
1999 N/A No FW sparger inspections performed.
2001 VT-3 Piping and brackets. No indications.
2001 VT-I Tee-box welds and end bracket attachment welds. No indications.
2002 EVT-1 End bracket attachment welds. No indications.
2004 VT-3 Piping and brackets. No indications.
2004 VT-I Tee-box welds and end bracket attachment welds. No indications.
2007 VT-3 Piping and brackets. Minor thermal fatigue 52
cracks at sparger flow holes.
2007 VT-I End bracket attachment welds. Bent keepers and minor pin wear on A, B &D spargers.
2008 VT-1 End brackets and keepers with indications from 2007. Recordable indications on FW-A-EB 1, FW-B-EB 1 & FW-D-EB2.
2010 VT-3 Piping and brackets. Minor thermal fatigue cracks at sparger flow holes.
2010 VT-I End bracket attachment welds. Bent keepers on C and D spargers and minor pin wear on A, B, C & D spargers.
2011 VT-1/VT-3 End brackets and attachment welds on FW-EBI and 2 on lines A,B,C & D. No evidence of overall movement or wear.
FOSAR 1995 VT-3 Examined annulus and removed some debris and loose parts 1996 VT-3 Examined annulus and removed small particulate debris and oxide crud flakes 1998 VT-3 Examined annulus. Found and removed 5 of 6 loose parts and evaluated part the remained for the cycle. Removed particulate debris 1999 VT-3 Examined annulus and removed small particulate debris and 4 foreign objects 2001 VT-3 Examined annulus with no recordable indications 2002 VT-3 Examined annulus and removed small particulate debris. Retrieved 2 pieces of hydrolazer nozzle assembly 2004 VT-3 Examined annulus and removed small particulate debris and 4 tie wraps 2005 VT-3 Examined annulus and removed small amount of dust and particulate debris.
2007 VT-3 Examined annulus and removed small metal particulate debris. Retrieved a brush bristle.
NRI 53
2008 VT-3 Examined annulus and removed minor particulate debris 2010 VT-3 Examined annulus and removed light particulate debris and paint chips 2011 VT-3 Examined annulus and removed small particulate debris. Could not retrieve small "sliver" identified on tie rod @315 and evaluated to leave as is.
In-Core Housing 1983 VT-3 2 of 89. No indications.
In-Core Dry Tubes 1986 9 Dry tubes replaced due to cracking 1995 VT-1, -3 Four dry tubes. 08-13, 16-21, 24-29 inspected VT-3; 32-21 replaced. No indications.
1996 N/A None.
1998 N/A None.
1999 VT-1, -3 32-13, 32-37. No indications.
2001 N/A None.
2002 N/A None.
2004 VT-1, -3 08-29, 16-13. No indications.
2007 VT-1, -3 08-37, 24-37 NRI 2008 VT-1, -3 08-13, 16-21 & 24-29. RI - Evidence of movement on 08-13 plunger.
2010 VT-3 6 dry tubes replaced: SRM A, SRM C, IRM B, IRM C, IRM D and IRM E. Post installation inspection performed, NRI.
2010 VT-I Dry tubes SRM B and SRM D inspected.
Dropped plunger on SRM B, RI.
2011 VT-I Dry tube IRM A and IRM F inspected with no recordable indications.
Instrument Penetrations Every RFO VT-2 Nuclear Boiler system pressure test during startup meets BWRVIP-49-A.
Jet Pump Assembly 1995 VT-3 Restrainer wedges and sensing lines on five 54
assemblies (50%). No indications.
1995 VT-I Welds on five riser braces (50%). No indications.
1996 VT-3 Restrainer wedges and set screws, inlet bolted connections, sensing lines on five assemblies (50%). No indications.
1996 VT-I Welds on five riser braces (50%). No indications.
1998 UT 26 of 30 Riser RS-1, RS-2, RS-3, circumferential welds. Four welds with indications - maximum approx. 3".
1998 EVT-1 Remaining four riser RS- 1 circumferential welds. No indications.
1998 MVT-1 Riser-to-restrainer RS-4, RS-5 welds on five assemblies (50%). No indications.
1998 MVT-1 Welds on five riser braces (50%). No indications.
1998 VT-I Restrainer wedges on five assemblies (50%).
No indications.
1998 VT-3 Restrainer set screws, inlet bolted connections, sensing lines on five assemblies (50%). No indications.
1998 UT 20 hold-down beams. One beam with UT indication on bolt hole replaced.
1999 UT 160 mixer, diffuser, and adapter circumferential welds. Indications found on four diffuser welds, all less than 2".
1999 EVT-1 20 mixer (MX-1) welds. No indications.
1999 UT Ten hold-down beams. No indications.
2001 UT Four RS-1 welds with indications from 1998.
Two 1998 indications determined to be lift-off. No growth on others.
2001 VT-I Restrainer wedges on five assemblies (one loop). No indications 55
2001 VT-3 Restrainer set screws, sensing lines on five assemblies (50%). No indications.
2002 UT, VT-I Beams. No indications.
2002 UT Four diffuser welds with indications.
Indications matched '99 indications within NDE uncertainty.
2004 EVT-l Two RS-1 welds with UT indications. Not seen visually.
2004 EVT-1 50% of RS-4, RS-5, RS-8, and RS-9 welds.
50% of riser brace welds. No indications.
2004 VT-3 50% of inlet bolted connections. No indications.
2004 VT- 1 50% of restrainer wedges. No indications.
2004 VT-3 One loop (50%) of jet pump instrumentation lines. No indications.
2004 EVT-1 Two RS-1 welds (H & Kjet pumps) with UT indications. Not seen visually.
2005 EVT-1 Four diffuser welds with UT indications. Not seen visually.
2005 UT 20 Beams NRI 2007 UT Six (6) welds on H and K risers, 2 welds with previous indications-no changes. No new relevant indications.
2007 UT 112 welds on 16 jet pump diffusers. 4 previous relevant indications. No change in previous indications and no new relevant indications.
2007 VT- I Jet pump wedges 1-10. NRI 2007 VT-I Jet pump sensing lines 1 NRI 2008 EVT-1 RS-1, RS-2 & RS-3 of F, G & J - NRI 2008 VT-1 Jet pump wedges 11-20. NRI 56
2008 VT-1 Jet pump sensing lines 11 NRI 2008 UT Remaining Jet Pump Diffuser Welds - NRI 2010 EVT-1 RS-8, RS-9 All 10 2010 VT-3 IN-5 on F, G and H, NRI 2010 EVT-1 RB-l a/b, RB-2a/b, RS-4, RS-5 on F, G and H, NRI 2010 EVT-1 RS-1 on Hand K, NRI 2010 EVT-1 DF-2 on 2, 9 and 10 (inside and outside), NRI 2010 VT-i Wedges 1-10, NRI 2010 EVT-1 Inspected MX-1, MX-2 and MX-4 on jet pumps 1-5 with no recordable indications.
2011 EVT-1 Inspected RS-1, RS-2 and RS-3 on risers A-E with no recordable indications.
2011 EVT-1 Inspected RS- 1 on risers H and K with no recordable indications.
2011 EVT-1 Inspected RS-9 riser brace weld on the J riser with no recordable indications.
LPCI Coupling N/A N/A N/A Miscellaneous Vessel 1995 VT-3 Reinspected one dryer support bracket with ID Brackets indication from 1992. No change.
1996 UT Reinspected same dryer support bracket from vessel OD. No change.
1998 VT-3 Reinspected same dryer support bracket. No change.
1999 N/A None.
2001 VT-3, UT Reinspected same dryer support bracket. No change.
2002 VT-3 Both guide rod bracket attachments. No indications.
2002 VT-3 All four steam dryer support brackets.
I Indication on one bracket unchanged.
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2002 VT-3 All four steam dryer hold-down brackets. No indications.
2002 VT-1 Six surveillance specimen holder brackets.
No indications.
2004 VT-I Upper surface of steam dryer support brackets. RI 2007 VT-1 4 Steam Dryer Support Attachment Welds.
Burnishing wear on top surface.
2008 VT-I Re-inspected Steam Dryer Attachment Welds and wear patterns on top surface. One wear pattern slightly different. RI 2010 EVT- 1 Re-inspected Steam Dryer Attachment Welds and wear patterns on top surface. Wear patterns slightly different. RI 2011 VT-3 Inspected guide rod brackets and attachments at 175 and 355 azimuths with no recordable indications 2011 EVT-1 Re-inspected steam dryer support attachment welds and bracket wear patterns on top surface. The wear pattern remained unchanged from RFO-28.
2011 VT-3 Inspected all four steam dryer hold down brackets with no recordable indications SLC 1995 N/A No SLC BWRVIP inspections.
1996 N/A No SLC BWRVIP inspections.
1998 EVT-2 Nozzle-to-safe-end weld. No indications.
1999 EVT-2 Nozzle-to-safe end weld. No indications.
2001 EVT-2 Nozzle-to-safe-end weld. No indications.
2002 PT Nozzle-to-safe-end weld. No indications.
2004 PT Nozzle-to-safe-end weld and safe-end. No indications.
2007 PT Nozzle-to-safe-end weld and safe-end. NRI 58
1 2010 1 PT Nozzle-to-safe-end weld and safe-end. NRI Steam Dryer and 1996 N/A Replaced all steam separator / shroud head Separator hold-down bolts.
1998 VT-3 Steam dryer and separator. Indications on five tack welds on three jacking bolt (lifting eye) assemblies on the steam dryer.
1999 VT-3 Reinspected cracked tack welds on steam dryer. No change.
2001 N/A None.
2002 VT-1/3 Inspected dryer cover plates and welds and start-up instrumentation remnant. No indications.
2004 VT-1/3 Baseline inspection of entire steam dryer OD and ID (all accessible welds: VT-I and plates:
VT-3). Two fatigue cracks in steam dam welds repaired. 16 horizontal cracks in interior vertical end plates evaluated as acceptable for service. Two IGSCC cracks in interior vertical weld and drainpipe weld evaluated as acceptable for service. Pre-emptive repair (strengthening plates and gussets) installed on cover plates and upper hood.
2004 VT-3 Steam separator - full top and periphery inspection. No indications.
2005 VT-I Re-inspection of two repaired cracks in the steam dam welds repaired in 04. (NRI) 2005 VT-I Drain channel weld and drain pipe weld evaluated acceptable for service in '04.(no discernible changes) 2005 VT-I Re-inspection of pre-emptive repair on the strengthening plates and gussets. (NRI) 2005 VT-1 High stressed vertical welds interior and exterior surfaces per SIL-644 R/1. (NRI) 2005 VT-1 High stressed horizontal welds interior and exterior surfaces per SIL-644 R/1. (NRI) 59
r r T 2005 VT-I Tie bars, steam dam gussets. (NRI) 2005 VT-I Lifting Support hardware. (NRI) 2005 VT-I Dryer leveling screw tack welds. (NRI) 2005 VT-I All internal vertical weld steam dryer vane end unit to plate welds. 62 indications total found. 16 indication in '04 and 44 indications in '05. Evaluated acceptable for service.
2005 VT-1 6 internal strut welds. (NRI) 2007 VT-I Steam Separator - All 36 Shroud Hold Down Bolts, 7 Standpipe welds. NRI 2007 VT-I Steam Dryer - 1st post EPU inspection per NRC commitment. 100% interior and exterior susceptible and accessible locations. Re-inspection of all pre-existing flaws and repaired areas. No discernible changes in existing flaws. One relevant indication noted at the 35 degree welded dryer bank support.
This indication was evaluated as not needing repair by GE.
2007 VT-1 New indications identified on the 144 and 324 degree lifting rod-to-support ring stitch welds. Evaluated no repair.
2007 VT-I The 144 degree leveling screw tack weld had one indication. Evaluated no repair.
2007 VT-I Indications on the vertical guides at locations 175 and 215 degrees. Evaluated no repair.
2008 VT-I Steam Dryer - 2 nd post EPU inspection per NRC commitment. Interior and exterior susceptible and accessible locations, re-inspection of all pre-existing flaws and modified/repaired areas. No discernible changes in existing flaws. 18 new RI's.
2008 VT-I The new indications include separate indications at the top of DC-V-4C, new indications on leveling screws & lifting rod tack welds, vertical guides, interior vane end 60
panels and new indications on interior drain piping DC-H-27 and DC-V-05.
2010 VT-I Steam Dryer - 3 post EPU inspection per NRC commitment. Interior and exterior susceptible and accessible locations, re-inspection of all pre-existing flaws and modified/repaired areas. No discernible changes in existing flaws. 1 new RI on DC-V-4C.
2010 VT-3 Steam Separator - Lifting eye assemblies &
attachment welds, peripheral standpipes, attachment welds & assembly welds, tie bars
& attachment welds, shroud head flange, accessible areas of shroud head and all 36 shroud hold down bolts. RI on 3 shroud head bolts not unlatched properly.
2011 VT-I Inspected prior indications on DCC-DP10 and DC-V04C with no discernible changes from RFO-28.
Surveillance Specimen 2002 VT-3/VT-1 Surveillance specimen holders 120 and 300 Holders upper and lower brackets and holder, and upper and lower brackets on 30. No indications.
2008 VT-I Upper and lower brackets on surveillance specimen holders 30 and 300. No indications.
2011 VT-1/VT-3 Inspected SSH-120 middle, lower and upper with no recordable indications.
Top Guide 1995 VT-I Ten locations in top guide grid lAW SIL-554.
No indications.
1996 VT-1 Seven locations in top guide grid IAW SIL-554. No indications.
1998 MVT-1 Four locations in top guide grid lAW SIL-554. No indications.
1999 VT-I Two aligner assemblies. No indications.
1999 VT-I Two hold-down assemblies. No indications.
1999 VT-1 Four locations in top guide grid. No indications.
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2001 VT-3 25% of rim and cover sheet bolts (NNS). No indications.
2002 VT-I Two hold-down assemblies. No indications.
2004 N/A None.
2005 VT-I Two hold-down assemblies at 18 and 198 degree locations. (NRI) 2008 VT-I Two hold-down assemblies at 108 and 288 degree locations. (NRI) 2008 EVT-1 Grid Beams inspected at locations 14-15, 14-23, 14-31, 22-15 and 25-15. (NRI) 2011 VT-i/VT-3 Inspected two hold-down assemblies at 18 and 198 degree locations with no recordable indications.
Dissimilar Metal Weld 2004 Automated N5A, N1O Exams (VIP 75-A) 2005 UT N6A, N6B, N7 Using code case N-702 2007 N2A,N2BN2E,N1O 2008 NIA, N2K (Cat. D) - No Flaws 2010 N1O 2011 N11A,N11B,N12A,N12B 62