PLA-7338, End of Interval Relief Requests for Third Inservice Inspection Interval
| ML15148A774 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 05/28/2015 |
| From: | Franke J Susquehanna |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| PLA-7338 | |
| Download: ML15148A774 (61) | |
Text
Jon A. Franke PPL Susquehanna, LLC Site Vice President 769 Salem Boulevard Berwick, PA 18603 Tel. 570.542.2904 Fax 570.542.1504 jfranke@pplweb.com MAY 2 8 2015 10 CFR 50.55a U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 SUSQUEHANNA STEAM ELECTRIC STATION END OF INTERVAL RELIEF REQUESTS FOR THIRD INSERVICE INSPECTION INTERVAL Docket No. 50-387 PLA-7338 and No. 50-388
Reference:
I. NRC Letter, "Third 10-Year Inservice Inspection (lSI) Interval Program Plan (TAC Nos.
MC1185, MC1186, MC1191, MC1192, MC1193, MC1194, MC1195, MC1196, MC1197, MC1199, MCI200), "dated September 24, 2004 (Accession ML042680078) .
In accordance with 10 CFR 50.55(a)(g)(5)(iii), PPL Susquehanna, LLC (PPL) requests relief from the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (B&PV) Code,Section XI, "Rules for Inservice Inspection [lSI] of Nuclear Power Plant Components." The attached relief requests in Attachments 1 through 3 of this letter apply to the third 10-year lSI interval, which ended on May 31, 2014, for the Susquehanna Station Electric Station (SSES), Units 1 and 2. During the interval, components identified in Attachments 1 through 3 received less than the required examination coverage. The third 10-year interval of the lSI program complied with the ASME Code,Section XI, 1998 Edition with the 2000 Addenda.
We request the review and approval by June 1, 2016.
There are no new regulatory commitments contained in this letter.
If you have any questions or require additional information, please contact Mr. Jeffery N. Grisewood (570) 542-1330.
/
L:
J. K. Franke
/ Attachments: 1) Relief Request Number 3RR-19, Revision 0
- 2) Relief Request Number 3RR-20, Revision 0
- 3) Relief Request Number 3RR-21, Revision 0
Document Control Desk PLA-7338 Copy: NRC Region I Mr. J. Greives, NRC Sr. Resident Inspector Mr. J. Whited, NRC Project Manager Mr. L. Winker, PA DEP/BRP
Attachment 1 to PLA-7338 Relief Request Number: 3RR-19, Revision 0
Attachment 1 to PLA-7338 Page 1 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO COMPONENT IDENTIFICATION Code Class: 1
Reference:
Table IWB-2500-1 Examination Category: B-D Item Number: B3.90
==
Description:==
Alternative Requirements to the Examination of Full Penetration Welds ofNozzles in Vessels Component Number: All Full Penetration Welds ofNozzles in Vessels CODE REQUIREMENT Units 1 and 2 each have 30 RPV nozzles fabricated with full penetration nozzle-to-vessel shell (or head) welds. These nozzles are as follows:
Nozzle ID System NlA,B Reactor Recirculation N2A- H, J, K Reactor Recirculation N3A-D Main Steam N4A-F Feedwater N5A,B Core Spray N6A,B Residual Heat Removal - Head Spray N7 Reactor Pressure Vessel - Head Vent N8A, B Reactor Recirculation Instrumentation N9 Control Rod Drive (capped)
Table IWB-2500-1, Examination Category B-D, Item Number B3.90, requires volumetric examination of all RPV nozzle-to-vessel welds in accordance with the examination requirements illustrated in Figure IWB-2500-7. Relief is requested from complete examination of those full penetration nozzle-to-vessel welds listed in Tables 3RR-19.1 and 3RR-19.2 due to component configuration. In addition, examination of the nozzle-to-vessel welds associated with the N2J, N4A and N4D nozzles, is further restricted due to plant design.
BASIS FOR RELIEF Pursuant to 10CFR50.55a(g)(5)(iii), relief is requested on the basis that conformance with the specified Code requirement has been determined to be impractical.
Complete examination of all of the aforementioned Units 1 and 2 Examination Category B-D nozzle-to-vessel welds is not practical due to the nozzle forging configuration. In each case, the radius of curvature of the nozzle forging (the nozzle side of the weld) causes the ultrasonic
Attachment 1 to PLA-7338 Page 2 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO search unit to lift and lose contact, thereby limiting complete volumetric examination of the ASME Section XI required examination volume. This examination limitation affects both the transverse and parallel scans of those components listed in Tables 3RR-19.1 and 3RR-19.2.
Alternate means, such as small search units and full vee path examinations, were considered, but were found to be ineffective in improving examination coverage.
Examinations of two Feedwater nozzle-to-vessel welds- N4A and N4D- are further limited due to plant design obstructions. A spacing of approximately 4.5 inches between the N4 and the Nll nozzles restricts examination of an arc of approximately 60 degrees (17%) of the affected nozzle-to-vessel welds.
Automatic examination of the Reactor Recirculation discharge nozzle-to-vessel weld N2J is limited due to plant design obstructions on Unit 2. The proximity of the N2J and N8D nozzles restricts examination of an arc of approximately 45 degrees (12.5%) of the affected nozzle-to-vessel welds.
Tables 3RR-19.1 and 3RR-19.2 detail examination coverage for all the nozzles.
PROPOSED ALTERNATE EXAMINATIONS The examinations were performed to the maximum extent practicable. High radiation areas preclude the use of supplemental manual examinations. Manual examinations yield no appreciable increase in examination coverage. The proposed alternative is the maximum coverage achievable shown in Tables 3RR-19.1 and 3RR-19.2.
APPLICABLE TIME PERIOD Relief is requested for the third ten-year inspection interval of the Inservice Inspection Program for Units 1 and 2.
Attachment 1 to PLA-7338 Page 3 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Table 3RR-19.1 Unit 1 Nozzle Component Limiting Condition Examination Figure Identification Description Coverage (%) 3RR-19.-
NIA,B Recirculation Nozzle Forging Configuration 84.5 1-2 Suction Nozzle-to-Vessel Weld N2A,F Recirculation Nozzle Forging Configuration 86.3 3-4 Discharge Nozzle-to-Vessel Weld N3A-D Main Steam Nozzle- Nozzle Forging Configuration 74.1 5 to-Vessel Weld N4B,C,E,F Feedwater Nozzle- Nozzle Forging Configuration 80.5 6 to-Vessel Weld N4A Feedwater Nozzle- Nozzle Forging Configuration 79.3 7-11 to-Vessel Weld and Limited scan path due to N11A instrumentation nozzle N4D Feedwater Nozzle- Nozzle Forging Configuration 75 12-14 to-Vessel Weld and Limited scan path due to NllB instrumentation nozzle N6A,B Head Spray and Nozzle Forging Configuration 77.1 15 Spare Nozzle-to-Vessel Weld N7 Vent Nozzle- Nozzle Forging Configuration 81.8 16 to-Vessel Weld N8A,B Jet Pump Nozzle Forging Configuration 78.8 17 Instrumentation Nozzle-to-Vessel Weld N9 Control Rod Drive Nozzle Forging Configuration 79.2 18 (CRD) Hydraulic System Return Nozzle-to-Vessel Weld
Attachment 1 to PLA-7338 Page 4 of38
. RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Table 3RR-19.2 Unit2 Nozzle Component Limiting Condition Examination Figure Identification Description Coverage (%) 3RR-19.
NlA Recirculation Nozzle Forging Configuration 80.3 19-20 Suction Nozzle-to-Vessel Weld NIB Recirculation Nozzle Forging Configuration 87.1 21-22 Suction Nozzle-to-Vessel Weld N2A, F, K Recirculation Nozzle Forging Configuration 76.6 23-24 Discharge Nozzle-to-Vessel Weld N2J Recirculation Nozzle Forging Configuration 76.4 23-25 Discharge Nozzle-to- and Interference with the N8B Vessel Weld Nozzle N4A,D Feedwater Nozzle-to- Nozzle Forging Configuration and 76.3 26-27 Vessel Weld Proximity of the NllA/NllB Nozzles N4B,C,E,F Feedwater Nozzle-to- Nozzle Forging Configuration 86.6 28-29 Vessel Weld N7 Vent Nozzle-to- Nozzle Forging Configuration 82.1 30-31 Vessel Weld N8A,B Jet Pump Nozzle Forging Configuration 84.6 32-33 Instrumentation Nozzle-to-Vessel Weld N9 Control Rod Drive Nozzle Forging Configuration 84.6 34-35 (CRD) Hydraulic System Return Nozzle-to-Vessel Weld
Attachment 1 to PLA-7338 Page 5 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna 1 N 1 Recirculation Outlet 70" Exam Volume= 10.9 Sq. In 45" Exam Volume = 39.1 Sq. In Inner 15%T Exam Volume (60"T & IRS)= 8.4 Sq. In 70" T-Scan achieved = 7.1 Sq. In 45" T-Scan achieved= 36.9 Sq. In 60" T-Scan achieved= 8.4 Sq. In Figure 3RR-19.1
Attachment 1 to PLA-7338 Page 6 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna 1 N1 Recirculation Outlet 70* Exam Volume= 10.9 Sq. In 45* Exam Volume = 39.1 Sq. In Inner 15%T Exam Volume (6o*T & IRS)= 8.4 Sq. In 70* P-Scan achieved = 5.8 Sq. In
=
45* P-Scan achieved 32.1 Sq. In Inner 15%T Scan achieved= 8.4 Sq. In Figure 3RR-19.2
Attachment 1 to PLA-7338 Page 7 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna N2 Nozzle - Recirculation Inlet 70" Exam Volume = 11.3 Sq. In 45" Exam Volume = 39.1 Sq. In Inner 15%T Exam Volume (60"T & IRS)= 8.4 Sq. In 70" T-Scan achieved= 7.2Sq. In 45" T-Scan achieved = 36.9 Sq. In 60" T Scan achieved = 8.4 Sq. In T-Scans 1o*T 45"T so*T I
I Figure 3RR-19.3
Attachment 1 to PLA-7338 Page 8 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna N2 Nozzle - Recirculation Inlet 70° Exam Volume =11.3 Sq. In 45° Exam Volume = 39.1 Sq. In Inner 15%T Exam Volume (60°T & IRS)= 8.4 Sq. In 70" P-Scan achieved = 6.0 Sq. In 45* P-Scan achieved = 34.6 Sq. In Inner 15%T Scan achieved = 8.4 Sq. In 70°P 45°P Figure 3RR-19.4
Attachment 1 to PLA-7338 Page 9 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna Unit-1 Main Steam N3 so* S4 Exam Volume= 10.0 Sq. ln.
so* SS Exam Volume = SO.O Sq. ln.
60" S4 IRs-scan LKCW achieved = 10.0 Sq. ln.
SO" S4 IRS-Scan LKCCW achieved= 10.0 Sq. ln.
=
so* SSP-Scan achieved 34.2 Sq. ln.
so* S4 T-Scan achieved= 10.0Sq.ln.
so* SST-Scan achieved =49.5 Sq. ln.
o.o*
16.9" 60"T I
O,..e.C.t.5 3-U-oS>
Shell Course T Nom. = 7.25" 0~
Clad T Nom.= 0.1875" Figure 3RR-19.5
Attachment 1 to PLA-7338 Page 10 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna N4 Nozzle - Feedwater 60" 56 Exam Volume = 49.7 sq. in.
60" S4 Exam Volume = 8.3 sq. in.
60" 56 T-scan achieved= 42.9 sq. in.
60" S4 T-scan achieved= 8.3 sq. in.
60" 56 P-scan achieved = 33.9 sq. in.
=
60" S4 IRS-Scan achieved 8.3 sq. in. (by modeling)
Figure 3RR-19.6
Attachment 1 to PLA-7338 Page 11 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna N4 Nozzle - Feedwater 70 6 Exam Volume= 10.9 Sq. In 45* Exam Volume = 39.1 Sq. In Inner 15%T Exam Volume (60*T & IRS)= 8.4 Sq. In 10* T-5can achieved= 7.2 Sq. In 45* T-Scan achieved= 36.3 Sq. In Inner 15%T Scan achieved = 8.4 Sq. In Figure 3RR-19.7
Attachment 1 to PLA-7338 Page 12 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna N4 Nozzle - Feedwater
=
70 6 Exam Volume 10.9 Sq. In 706 P-Scan achieved= 5.8 Sq. In I
I I
I I
I I
Automated .UT 70 6 P-Scan Figure 3RR-19.8
Attachment 1 to PLA-7338 Page 13 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Manual UT scanning restricted, due to N11A Nozzle.
Figure 3RR-19.9 246.6* az.
187.2° az.
N4A 70" T-Scans and P-scans Automated exams restricted due to N11 A nozzle.
Figure 3RR-19.10
Attachment 1 to PLA-73 3 8 Page 14 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO 242.4" az.
187.2" az.
N4A 45*, 60* T-Scans and o* L-wave Automated exams restricted due to N11A nozzle.
Figure 3RR-19.11
Attachment 1 to PLA-7338 Page 15 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna N4 Nozzle - Feedwater 60" 56 Exam Volume= 49.7 sq. in.
so* S4 Exam Volume= 8.3 sq. in.
so* 56 T..Scan achieved =42.9 sq. in.
so* S4 T..Scan achieved = 8.3 sq. ln.
so* S6 P..Scan achieved= 33.9 sq. in.
60" S4 IRS-Scan achieved =8.3 sq. in. (by modeling)
Figure 3RR-19.12
Attachment 1 to PLA-7338 Page 16 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna N4 Nozzle - Feedwater 60" 56 Exam Volume= 49.7 sq. in.
60" 54 Exam Volume= 8.3 sq. in.
60" 56 T-Scan aChieved =15.3 sq. in.
60" 54 T-Scan achieved =0,0 sq. in.
so* 56 P-Scan achieved =24.1 sq. ln.
60" 54 IRS-Scan achieved =0.0 sq. in. (by modeling)
N11 Nozzle Buildup Figure 3RR-19.13
Attachment 1 to PLA-7338 Page 17 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO N11B Figure 3RR-19.14
Attachment 1 to PLA-7338 Page 18 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna Unit-1 Top Head Spare N6 so* S4 Exam Volume = O.OSq. ln. 60" S4 Exam Volume = O.OSq. ln.
-so* S6 Exam Volume ::: 27.2 Sq. ln. 1"'-JI...-----, 60" S6 Exam Volume = 27.8 Sq. ln.
. SO" S4 IRS-5can LKCW achieved ::: 0,0 Sq. ln. ..--~ SO" S4 IRS-Scan LKCW achieved = 0,0 Sq. ln*
=
- SO" S4 IRS.Scan LKCCW achieved 0.0 Sq. ln. SO" S4 IRS-5can LKCCW achieved = 0.0 Sq. ln.
- SO" 56 P-Scan achieved = 16.1 Sq. ln. 60" S6 P-Scan achieved =24.1 Sq. ln.
I .
! so* S4 T-Scan achieved = 0.0 Sq. ln. so* S4 T-Scan achieved = 0.0 Sq. ln.
- so* 56 T-Scan achieved = 19.0 Sq. ln. 60" S6 T-Scan achieved = 24.7 Sq. ln.
D11e C.J S 3-.Z 8-D 2i' o<<
Shell Course T Nom. =3.675" Clad T Nom. = Unclad Figure 3RR-19.15
Attachment 1 to PLA-7338 Page 19 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna Unit-1 Top Head Vent N7 so* S4 Exam Volume = O.OSq. ln.
so* S6 Exam Volume = 19.5 Sq.ln.
so* S41RS-Scan LKCW achieved= 0,0 Sq. ln.
so* S41RS-Sean LKCCW achieved= 0.0 Sq. ln.
so* SS P-Scan achieved= 14.8 Sq. ln.
so* S4 T-Scan achieved= 0.0 Sq. ln.
so* SS T -Scan achieved = 17.1 Sq. ln.
Dne.CJS 3-t-S'-oS od Shell Course T Nom. =3.675" Clad T Nom. = Unclad Figure 3RR-19.16
Attachment 1 to PLA-7338 Page 20 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna Unit-1 Jet Pump lnstr. NB so* S4 Exam Volume= 8.9 Sq.ln.
so* SS Exam Volume = 54.1 Sq. ln.
so* S4 IR5-Scan LKCW ad'lieved = 8.9 Sq. ln.
so* S4 IR5-Scan LKCCW acnleved =8.9 Sq. ln.
so* S6 P-scan acnieved = 37.0 Sq. ln.
so* S4 T-scan achieved= 8.9 Sq. ln.
so* SST-scan achieved =44.5Sq.ln.
D,eCI5 0 .-2.,6-0"5
=
Shell Coui'S8 T Nom. 6.5625*
t9e(
Clad T Nom. = 0.1875" Figure 3RR-19.17
Attachment 1 to PLA-7338 Page 21 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna Unit-1 CRD Return N9 60* S4 Exam Volume= 8.8 Sq. ln.
=
60° S6 Exam Volume 54.0 Sq. ln.
so* S4 IRS.Scan LKCW achieved = 8.8 Sq. ln.
so* 54 IRS-Scan LKCCW achieved= 8.8 Sq. ln.
so* SS P-5can achieved= 37.SSq.ln.
so* S4 T-scan achieved= 8.8Sq.lo.
60* S6 T-Scan achieved = 44.3 Sq. ln.
6!7eCJ 5 3-~8-o<J Shell Course T Nom. = S.5625" Clad T Nom. =0.1875" e~
Figure 3RR-19.18
Attachment 1 to PLA-7338 Page 22 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna 2 N1 Recirculation Outlet 10* Exam Volume= 10.9 Sq. In 45" Exam Volume = 39.1 Sq. In Inner 15%T Exam Volume (so*r & IRS)= 8.4 Sq. In 10* T-scan achieved= 6.1 Sq. In 45" T-scan achieved= 34.7 Sq. In 60" T-Scan achieved= 8.4 Sq. In Figure 3RR-19.19
Attachment 1 to PLA-73 38 Page 23 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna 2 N 1 Recirculation Outlet 10* Exam Volume= 10.9 Sq. In 45'" Exam Volume= 39.1 Sq. In Inner 15%T Exam Volume (SO"T & IRS)= 8.4 Sq. In 70° P-Scan achieved = 5.0 Sq. In 45° P-Scan achieved :: 31.2 Sq. In Inner 15%T Scan achieved= 8.4 Sq .. In Figure 3RR-19.20
Attachment 1 to PLA-7338 Page 24 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO 70" Eltom Volumo = 3.4 Sq. ln.
- s* ex.mvolbm.e .,s..c.Sq~ tn.
SO.. En.m Volume .. 3.3 Sq.lo.
70' T.scan Voltllll<! A<bievod
- 3.1 Sq. t>.
45* T~n va~umc A..c:tlieYod
- 15.3 Sq.. ln..
60"T-S<:onVolume . . . . . _ . 3.3 Sq. t>.
70' P-Scan V.I.Jme Achl<vod . 2.2"Sq. ln.
.ts* P.SQn VolumeAchitved ~ 11,3 Sq. rn~
lnno< IS%T/Rs..scanVolum*Adolevri*3.3Sq.ln.
Coverage Plot for Radial (Tl}-Scans Figure 3RR-19.21
Attachment 1 to PLA-7338 Page 25 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO 70° Exam Volume= 3.4 Sq. ln.
45° Exam Volume= 15.4 Sq. ln.
60° Exam Volume = 3.3 Sq. ln.
70° T-Scan Volume Achieved= 3.1 Sq. ln.
45° T-Scan Volume Achieved= 15.3 Sq. ln.
60° T-Scan Volume Achieved= 3.3 Sq. ln.
70° P-Scan Volume Achieved = 2.2 Sq. Inc.
45° P-Scan Volume Volume Achieved = 11.3 Sq . Inc Inner 15% T IRS-Scan Volume Achieved= 3.3 Sq. ln.
Coverage Plot for Circumferential (PJ Scans Figure 3RR-19.22
Attachment 1 to PLA-7338 Page 26 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna Recirculation Inlet N2 Nozzle 10* Exam Volume= 11.3 Sq. ln.
45* Exam Volume= 39.1 Sq ln.
lnner15%TExam Volume (IRS & 60"T)= 6.4 Sq ln.
70" T -Scan Achieved = 5.7 Sq. ln.
45" T -scan Achieved = 33,4 Sq. ln.
eo* T-Scan Achieved = 6.4 Sq. ln.
6D"T I
Figure 3RR-19.23
Attachment 1 to PLA-7338 Page 27 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna Recirculation Inlet N2 Nozzle 7f1' P-&can Exam Volume = 11.3 Sq. ln.
45° P-scan Exam Volume = 39.1 Sq. ln.
Inner 15% P-Scan Exam Volume (IRS & 60"T) = 8.4 Sq ln.
70" P-scan Achieved =4.5 Sq. !n.
45" P-scan Achieved = 29.8 Sq. 1n.
Inner 15% P-scan Achieved= 8.3 Sq. In Figure 3RR-19.24
Attachment 1 to PLA-7338 Page 28 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna Recirculation Inlet N2 Nozzle 70" Exam Volume "' 11.3 SQ. ln.
45" Exam Volume = 39. 1 Sq tn.
Inner 15%T Exam Volume (IRS & 60"T)- 8.4 Sq tn.
70*T-Scan Achieved= 5.7 Sq. ln.
45" T-Sean Act11eved =33.4 Sq.ln.
60" T-Scan AchH!ved :: 6.3 Sq. ln.
60° T-Scan restricted due to the proximity of the N88 nozzle Restricted over 45° of weld length 45"T 60"T I
Figure 3RR-19.25
Attachment 1 to PLA-7338 Page 29 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna 2 N4 Nozzle - Feedwater
=
60e NS Exam Vofume 10.a Sq. ln.
60" 56 Exam Volume= 39.8 Sq. ln.
60" S4- Exam Volume == 8.6 Sq. ln.
60" NS T-ScanAchteved = 6.3 Sq. ln.
60 6 ssT-Scan Achieved
- 39.1 Sq. ln.
=
eo* 54- T--$can Achieved 8.5 Sq. ln.
Scans were restricted over 43° of weld length due to proximity of the N11A and N11 B nozzles
-t--+--------*n.o~---------.
Figure 3RR-19.26
Attaclunent 1 to PLA-7338 Page 30 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna 2 N4 Nozzle - Feedwater 60° NS Exam Volume= 10.8Sq.ln.
60° 56 Exam Volume = 39.6 Sq. ln.
soo S4 ORS /Inner 15%T} Exam Volume =8.5 Sq. ln.
60° NS P..Scan Achieved - 5.4 Sq. Jn.
60° 56 P-Scan Achieved - 34.6 Sq. ln.
60° S4 (IRS I Inner 15%T) Achieved = 8.5 Sq. ln.
Scans were restricted over 43° of weld length due to proximity of the N11A and N11 B nozzles 0.8-J I 10.7!
1.--5.3--jI eo*pl II so*p I I &rP I
Figure 3RR-19.27
Attachment 1 to PLA-7338 Page 31 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna 2 N4 Nozzle - Feedwater 60° NS EJcam Volume= 10.8 Sq. ln.
=
60" 56 Exam Volume 39.8 Sq. ln.
=
60° S4 Exam Volume 8.5 Sq. ln.
60"' NS T-Scan Achieved= 6.3 Sq. ln.
=
so* S6 T-scan Achieved 39.1 Sq. ln.
60" S4T-Scan Achieved= 8.5 Sq. tn.
Figure 3RR-19.28
Attachment 1 to PLA-7338 Page 32 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna 2 N4 Nozzle - Feedwater 60° NS Exam Volume= 10.8 Sq. ln.
60.. S6 Exam Volume = 39.8 Sq. ln.
60° $4 {IRS /Inner 15%T) Exam Volume= 8.5 Sq. ln.
60° NS P-Scan Achieved =5.4 Sq. ln.
60~ 56 P-Scan Achieved= 34.6 Sq. ln.
60" S4 (IRS/Inner 15%T)Achieved c 8.5 Sq. ln.
I I
I I
I
~
Figure 3RR-19.29
Attachment 1 to PLA-7338 Page 33 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna Top Head Vent (N7)
=
60" NS Exam Volume 5.5 Sq. ln.
60 .. FV Exam Volume = 10.1 Sq. fn.
Inner 15%T Exam Volume (IRS & 60~) = 2.6 Sq. ln.
60.. NS T-Scan achieved= 3.5 Sq. ln.
60° FV T-Scan achieved= 10.0 Sq. ln.
Inner 15%T Scan achieved (IRS & 60"T) =2.6 Sq. ln.
5.5" 10.5" 60TNS 60"T Figure 3RR-19.30
Attachment 1 to PLA-7338 Page 34 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna Top Head Vent (N7) soo NS Exam Volume = 5.5 Sq. ln.
soo FV Exam Volume= 10.1 Sq. ln.
Inner 15o/oT Exam Volume (fRS & 60<>"f) =2.6 Sq. ln.
soc NS P-Scan achieved = 3.0 Sq. ln.
soc FV P-5can achieved = 8.2 Sq. ln.
Jnner15%T Scan achieved (IRS & 60°P) = 2.6 Sq. ln.
Figure 3RR-19.31
Attachment 1 to PLA-7338 Page 35 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna Unit-2 Jet Pump lnst.- N8 soo NS Exam Volume= 11.6 Sq. ln.
=
60° FV Exam Volume 39.2 Sq. ln.
Inner 15%T Exam Volume {IRS & S0°T) =8.5 Sq. ln.
60° NS T-Scan achieved= 5.7 Sq. ln.
60° FV T-Scan achieved = 37.8 Sq. ln.
Inner 15%T Scan achieved (IRS & SOoT)= 8.5 Sq. ln.
soc NS T 60° FVT I I I
I I
I I
1 Figure 3RR-19.32
Attachment 1 to PLA-7338 Page 36 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna Unit-2 Jet Pump lnst. - N8
=
60° NS Exam Volume 11.6 Sq. ln.
60° FV Exam Volume =39.2 Sq. ln.
Inner 15%T Exam Volume {IRS & 60°T) =8.5 Sq. ln.
=
60° NS P-Scan achieved 5.3 Sq. ln.
=
60° FV P-Scan achieved 34.5 Sq. ln.
45° IRS P-Scan achieved =8.5 Sq. ln.
P-5cans j
l I
I I
1 Figure 3RR-19.33
Attachment 1 to PLA-7338 Page 37 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna Unit-2 Control Rod Drive - N9
=
60" NS Exam Volume 11.6 Sq. ln.
60" FV Exam Volume= 39.2 Sq. ln.
Inner 15%T Exam Volume (IRS & 60"T) = 8.5 Sq. ln.
60" NS T -Scan achieved = 5. 7 Sq. ln.
60" FV T-Scan achieved= 37.8 Sq. ln.
Inner 15%T Scan achieved (IRS & 60"T) =8.5 Sq. ln.
60° NST I
I I
I I
I
1 Figure 3RR-19.34
Attachment 1 to PLA-7338 Page 38 of38 RELIEF REQUEST NUMBER: 3RR-19, REVISIONO Susquehanna Unit-2 Control Rod Drive - N9 60° NS Exam Volume= 11.6 Sq. ln.
60° FV Exam Volume= 39.2 Sq. ln.
Inner 15%T Exam Volume {IRS & 60°T) =8.5 Sq. ln.
=
60° NS P.Scan achieved 5.3 Sq. ln.
60° FV P*Scan achieved= 34.5 Sq. ln.
45° IRS P-Scan achieved =8.5 Sq. ln.
I I
I I
I
1 Figure 3RR-19.35
Attachment 2 to PLA-7338 Relief Request Number: 3RR-20, Revision 0
Attachment 2 to PLA-7338 Page 1 of 13 RELIEF REQUEST NUMBER: 3RR-20 REVISIONO COMPONENT IDENTIFICATION Code Class: 1
Reference:
Table IWB-2500-1 Examination Category: B-A Item Number: Bl.12, Bl.22
==
Description:==
Alternative Requirements to the Examination of Pressure Retaining Welds in the Reactor Pressure Vessel Component Number: All Pressure Retaining Welds in the Reactor Pressure Vessel CODE REQUIREMENT Table IWB-2500-1, Examination Category B-A, Item Number Bl.12, requires volumetric examination of essentially 100% of the weld length of all longitudinal shell welds in accordance with the examination requirements illustrated in Figure IWB-2500-2. Relief is requested from complete examination of the affected welds due to a plant design obstruction caused by permanent reactor pressure vessel (RPV) mirror insulation support steel.
Table IWB-2500-1, Examination Category B-A, Item Number Bl.22, requires volumetric examination of essentially 100% of the weld length of the bottom head meridional welds in accordance with the examination requirements illustrated in Figure IWB-2500-3. Relief is requested from complete volumetric examination of welds due to interferences with the vessel support skirt and bottom head penetrations.
BASIS FOR RELIEF Pursuant to 10CFR50.55a(g)(5)(iii), relief is requested on the basis that conformance with the specified Code requirement has been determined to be impractical.
Examinations of the affected welds were performed to the maximum extent practical.
For Item Number Bl.12, longitudinal welds, the total examination coverage obtained is the maximum practical due to interference with RPV mirror insulation support steel.
For Item Number B1.22, meridional welds, the total examination coverage obtained is the maximum practical due to interference with the vessel support skirt and Control Rod Drive (CRD) obstructions.
The RPV pressure retaining welds are also subject to VT-2 visual examination during system pressure testing in accordance with the requirements of Examination Category B-P.
PROPOSED ALTERNATE EXAMINATIONS The examinations were performed to the maximum extent practicable. The proposed alternative is the maximum coverage achievable shown in Tables 3RR-20.1 and 3RR-20.2.
Attachment 2 to PLA-7338 Page 2 of13 RELIEF REQUEST NUMBER: 3RR-20 REVISIONO APPLICABLE TIME PERIOD Relief is requested for the third ten-year inspection interval of the Inservice Inspection Program for Units 1 and 2.
Attaclunent 2 to PLA-7338 Page 3 of13 RELIEF REQUEST NUMBER: 3RR-20 REVISIONO Table 3RR-20.3 Unit 1 Component Item Component Limiting Condition Examination Figure Identification Number Description Coverage (%) 3RR-20.
BK Bl.12 Vessel Limited by RPV mirror 76.7 1 Longitudinal Weld insulation support steel BM Bl.12 Vessel Limited by RPV mirror 76.3 2 Longitudinal Weld insulation support steel DA-DF Bl.22 Bottom Head Limited by vessel support 85.3 3-4 Meridional Weld DG-DH B1.22 Bottom Head Limited by bottom head 7.7 5 Meridional Weld penetrations Table 3RR-20.2 Unit2 Component Item Component Limiting Condition Examination Figure Identification Number Description Coverage (%) 3RR-20.-
BK Bl.12 Vessel Limited by RPV mirror 72.1 6 Longitudinal Weld insulation support steel BM Bl.12 Vessel Limited by RPV mirror 70.6 7 Longitudinal Weld insulation support steel DG-DH B1.22 Bottom Head Limited by bottom head 23.7 8-10 Meridional Weld penetrations
Attachment 2 to PLA-7338 Page 4 of 13 RELIEF REQUEST NUMBER: 3RR-20 REVISIONO D g Left Side Scans U1 LN
'-J (Jl Right Side Scans 0-N z ):>
0 VJ
~ ll'1 11 0 Automated Scan Area Figure 3RR-20.1
Attachment 2 to PLA-7338 Page 5 of 13 RELIEF REQUEST NUMBER: 3RR-20 REVISIONO D
14,~11 I~ ~-... ,; ~u
~~l - 1 I - '
-w
. Left Side Scans i"'~ '
z\
- B. Right Side Scans 0'\
N
- I I
~
w n U1 0 ...
Automated Scan Area Figure 3RR-20.2
Attachment 2 to PLA-7338 Page 6 of 13 RELIEF REQUEST NUMBER: 3RR-20 REVISIONO Susquehanna Unit-1 Bottom Head Meridional 60~ S4 Exam Volume = 8.8 Sq. ln.
60* 56 Exam Volume = 51.4 Sq. ln.
Go* 54 P-Scan LKDN achieved = 8.8 Sq. ln.
60° S4 P-Scan LKUP achieved = 8.8 Sq. ln.
60° 56 P-Scan achieved= 51.4 Sq. ln.
60' S4 T-Scon LKCW achleved a 8.8 Sq. ln.
60" S4 T-Scan LKCCW achieved = 8.8 Sq ln.
60° S6 T-Scan achieved = 51.4 Sq. ln.
~
18.1' I I I I I I I I I I I
r --- - ----, I Radial Plate T Nom. = 6.75" Figure 3RR-20.3 Clod TNom.
- 0.1875*
Attachment 2 to PLA-7338 Page 7 of13 RELIEF REQUEST NUMBER: 3RR-20 REVISIONO Meridional Weld Limitation Scan limited due to the skirt weld.
Totolleng:th =77.4" Inside skirt l*ength "' 14*
Outside skirt length := 52" Figure 3RR-20.4
Attachment 2 to PLA-7338 Page 8 of 13 RELIEF REQUEST NUMBER: 3RR-20 REVISIONO Susquehanna Unit-1 Bottom Head Dollar-Side Plate Weld 60' 54 Exam Volume
- 15.3 Sq. ln.
60' 56 Exam Voluma " 89.4 Sq. ln.
60' S4 P.*Scan LKDN achieved
- 153 Sq. ln.
60' 54 P*Scan LKUP achieved" 153 Sq. ln.
60' 56 P*Scon achieved"' 89.4 SQ. n.
60' 54 T*Scan LKCW achieved .. 15.3 Sq. ln.
u .*. 60' 54 T-Scan LKCCW achieved= 15.3 Sq.ln.
e&'1 I 60' 56 T-Scon achieved .. 89.4 Sq. ln.
ct.
I I
I I
I I
-..... .... _.... ...}I I
Figure 3RR-20.5 Dollar Plate TNom.= 8.25' Clod T Nom.* 0.1875"
Attachment 2 to PLA-7338 Page 9 of13 RELIEF REQUEST NUMBER: 3RR-20 REVISIONO rr*~
I [Jill!
~J Left Side Scans B~~ Right Side Scans
~
z )>
0
)>
rn
~
-n
~~. /.
Automated System Sca nned Area Figure 3RR-20.6
Attachment 2 to PLA-7338 Page 10 of 13 RELIEF REQUEST NUMBER: 3RR-20 REVISIONO D
J *~ H~~~
- t~
1 r-..o Left Side Scans 11~~~
---~
/z BM~ I !;I
~~
~ ...
- '--?
Right Side Scans
~ ~~
i!i~~
1911* '
r f))
~-J Automated System Scanned Area Figure 3RR-20.7
Attachment 2 to PLA-7338 Page 11 of 13 RELIEF REQUEST NUMBER: 3RR-20 REVISIONO 60" NS Exam Volume= 10.4 Sq. ln.
Susquehanna 60" S6 Exam Volume = 66.3 Sq. ln.
60" S4 Exam Volume= 13.0 Sq. ln.
Bottom Hd . (Dollar) PI's 60" NS T-Scan Achieved= 10.4 Sq. ln.
60" S6 T-Scan Achieved= 66.3 Sq. ln.
60° S4 T-Scan Achieved= 13.0 Sq. ln.
60° NS P-Scan Achieved= 10.4 Sq. ln.
60° S6 P-Scan Achieved = 66.3 Sq. ln.
60° S4 P-Scan Achieved = 13.0 Sq. ln.
Manual Scan Area Right and Left Sides
)
.-.--- I
..-..- I I
I .- .- I
~- I I I I I I I I
I I
I T/P Scans I
60°T 60°T Ns 1
ITJP Scans
-5.5"-'
1----7.4" 1---------21.5" I
I 60" S4 P-Scan Achieved = 13.0 Sq . ln.
Figure 3RR-20.8
Attachment 2 to PLA-7338 Page 12 of 13 RELIEF REQUEST NUMBER: 3RR-20 REVISIONO Susquehanna Unit 2 - Bottom Head Figure 3RR-20.9
Attachment 2 to PLA-7338 Page 13 of13 RELIEF REQUEST NUMBER: 3RR-20 REVISIONO Figure 3RR-20.10
Attachment 3 to PLA-7338 Relief Request Number: 3RR-21, Revision 0
Attachment 3 to PLA-7338 Page 1 of 4 RELIEF REQUEST NUMBER: 3RR-21 REVISIONO COMPONENT IDENTIFICATION Code Class: 1
Reference:
3RR-01 Examination Category: Not applicable Item Number: R1.11, R1.20
==
Description:==
Alternative Requirements to the Examinations in the Risk-Informed and Augmented Programs Component Number: Various Welds (See Table 3RR-21.1 and 3RR21.2)
CODE REQUIREMENT The Units 1 and 2 components listed in Table 3RR-21.1 and 3RR-21.2, subject to the examination requirements of the Risk Informed Inspection Program and various Augmented Inspection Programs, are discussed in this relief request. Detail of the Risk Informed Inspection Program can be found within approved relief request 3RR-01Y)
Essentially 100% of the circumferential welds selected are required to be examined. As defined by ASME Code Case N-460, essentially 100% means more than 90% ofthe examination volume of each weld where reduction in coverage is due to interference by another component or component geometry.
BASIS FOR RELIEF Pursuant to 10CFR 50.55a(g)(5)(iii), relief is requested on the required 100% volumetric examination, on the basis the Code requirement is impractical as described by the balance of this request. This relief request addresses welds for the third interval where ::;;90% of the examination volume was obtained.
Complete examination in accordance with the governing augmented inspection requirements is not practical due to the limitations noted in Table 3RR-21.1 and Table 3RR21.2. All examinations were completed to the maximum extent practical.
Relief is requested for those components listed in Table 3RR-21.1 and Table 3RR-21.2 where the governing inspection requirements are impractical to implement due to access restrictions and/or metallurgical constraints.
For the welds listed in the table, it has been determined that the obstruction or interference could not be removed without significant work, increased radiological dose, and/or damage to plant equipment.
(I) NRC Safety Evaluation Report [related to Relief Request No. 3RR-Ol], dated July 28, 2005, "Third 10-Year Inservice Inspection (lSI) Interval Program Plan (TAC Nos. MC1181 and 1182)."
Attachment 3 to PLA-7338 Page 2 of4 RELIEF REQUEST NUMBER: 3RR-21 REVISIONO Examination of the weld using radiography was determined to be impractical due to needed draining of the affected piping for radiography that would lead to increased dose in the surrounding areas.
PROPOSED ALTERNATE EXAMINATIONS The examinations were performed to the maximum extent practicable. Periodic system pressure tests have been performed on the affected welds in accordance with Table IWB-2500-1 Examination Category B-P and Table IWC-2500-1 Examination Category C-H. Additionally, routine walkdowns are performed by operators and system engineers for the piping that is external to primary containment. The purpose of these walkdowns is to note any system anomalies that could affect plant performance.
APPLICABLE TIME PERIOD Relief is requested for the third ten-year inspection interval of the Inservice Inspection Program for Units 1 and 2.
Attachment 3 to PLA-7338 Page 3 of4 RELIEF REQUEST NUMBER: 3RR-21 REVISIONO Table 3RR-21.1 Unit 1 Component Item Exam Configuration I Limiting Examination Identification Number Requirement System Condition Coverage
(%)
DCA1081-1-A R1.11 Risk Informed Pipe to Elbow I Hanger on 50 ISVIGSCC Residual Heat downstream side Category B Removal of weld DCA1081-FW-3 R1.11 Risk Informed Elbow to Valve I Single side access 50 ISVIGSCC Residual Heat due to valve CategoryB Removal configuration DCA1101-FW-8 R1.11 Risk Informed Elbow to Valve I Single side access 50 ISVIGSCC Residual Heat due to valve CategoryB Removal configuration DCAllOl-FW-9 R1.11 Risk Informed Pipe to Valve I Single side access 50 ISVIGSCC Residual Heat due to valve CategoryB Removal configuration DCA1101-FW- R1.11 Risk Informed Pipe to Valve I Single side access 50 10 ISVIGSCC Residual Heat due to valve CategoryB Removal configuration DCA1102-FW-8 R1.11 Risk Informed Elbow to Valve I Single side access 50 ISVIGSCC Residual Heat due to valve CategoryB Removal configuration DCA1102-FW-9 R1.11 Risk Informed Valve to Pipe I Single side access 50 ISVIGSCC Residual Heat due to sockolet CategoryB Removal DCA1102-FW- R1.11 Risk Informed Pipe to Valve I Single side access 50 10 ISVIGSCC Residual Heat due to valve CategoryB Removal configuration DLA1011-FW-3 R1.11 Risk Informed lSI Flued Head to Single side access 50 Valve I Feedwater due to flued head VRRB311-FW- R1.20 Risk Informed lSI Pipe to Pipe I Single side access 50 A 14M Reactor due to sweep-o-let Recirculation
Attachment 3 to PLA-7338 Page 4 of4 RELIEF REQUEST NUMBER: 3RR-21 REVISIONO Table 3RR-21.2 Unit2 Component Item Exam Configuration/ Limiting Examination Identification Number Requirement System Condition Coverage
(%)
DCA2071-FW-4 Rl.ll Risk Informed lSI Valve to Elbow I Single side access 50 Core Spray due to valve configuration DCA2071-FW-5 Rl.ll Risk Informed lSI Reducer to Safe Configuration of 78.9 End I Core Spray upstream eccentric reducer DCA2081-1-A Rl.ll Risk Informed lSI I Elbow to Pipe I Support collar 85.5 IGSCC Category B Residual Heat restricts Removal downstream exam DCA2101-FW-8 Rl.ll Risk Informed lSI I Elbow to Valve I Single side access 50 IGSCC Category B Residual Heat due to valve Removal configuration DCA2101-FW- Rl.ll Risk Informed IS I I Pipe to Valve I Single side access 50 10 IGSCC Category B Residual Heat due to valve Removal configuration DCA2102-FW-7 Rl.ll Risk Informed lSI I Elbow to Valve I Single side access 50 IGSCC Category B Residual Heat due to valve Removal configuration DCA2102-FW-8 Rl.ll Risk Informed lSI I Valve to Pipe I Single side access 50 IGSCC Category B Residual Heat due to valve Removal configuration DCA21 02-FW-9 R1.20 Risk Informed Pipe to Valve I Single side access 50 ISI/IGSCC Residual Heat due to valve CategoryB Removal configuration