Text

Response to Request for Additional Information Regarding Exemption Request for Nonconforming Dye Penetrant Examinations of Dry Shielded Canisters (Dscs) 11 Through 15
	ML18100A183
Person / Time
Site:	Monticello
Issue date:	04/05/2018
From:	O'Connor T; Northern States Power Company, Minnesota, Xcel Energy
To:	; Document Control Desk, Division of Spent Fuel Management
Shared Package
ML18100A173	List: L-MT-18-013, Response to Request for Additional Information Regarding Exemption Request for Nonconforming Dye Penetrant Examinations of Dry Shielded Canisters (Dscs) 11 Through 15; ML18100A185; ML18100A188; ML18100A190; ML18100A191; ML18100A193;
References
	CAC 001028, EPID L-2017-LLE-0029, L-MT-18-013
	Download: ML18100A183 (115)
	v • d • e

{{#Wiki_filter:ENCLOSURE 11 CONTAINS PROPRIETARY INFORMATION -WITHHOLD FROM PUBLIC DISCLOSURE IN ACCORDANCE WITH 10 CFR 2.390 2 8 07 West County Road 75 Monticello , MN 55362 800.895.4999 xce l energy.com April 5 , 2018 ATTN: Document Control Desk Director, Division of Spent Fuel Management O ffi ce of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission Washington , DC 20555-0001 Monticello Nuclear Generating Plant Docket No. 50-263 Renewed Facility Operat i ng License No. DPR-22 Independent Spent Fuel Storage Installation Docket No. 72-58 (l Xcel Energy* R ES PON S I B LE BY NAT U RE* L-MT-18-013 10 CFR 72.7 Response to Request for Additional Information Regarding Exemption Request for Nonconforming Dye Penetrant Examinations of Dry Shielded Canisters (DSCs) 11 through 15 (CAC No. 001028 , EPID L-2017-LLE-0029) Re f erences: 1) Letter from NSPM to NRC , " Exemption Request for Nonconforming Dye Penetrant Examinations of Dry Shielded Canisters (DSCs) 11 through 15", dated October 18 , 2017 (ADAMS Accession No. ML17296A205)

2) Letter from NRC to NSPM , " First Request for Additional Information for Review of Exemption Request for Five Nonconforming Dry Shielded Can i sters 11 through 15 (CAC No. 001028 , Docket No. 72-58 , EPID L-2017-LLE-0029)", dated March 6 , 2018 (ADAMS Accession No. ML18065A545) In accordance with 10 CFR 72.7 , Northern States Power Company , a Minnesota corporation (NSPM), doing business as Xcel Energy , requested in Reference 1 , a permanent exemption from the requirements of 10 CFR 72.212(a)(2), 10 CFR 72.212(b)(3), 10 CFR 72.212(b)(5)(i), 10 CFR 72.212(b)(11

), and 10 CFR 72.214 for five NUHOMS Dry Shielded Canisters (DSCs), designated DSCs 11-15 , due to nonconforming dye penetrant (PT) examinations performed during the loading campaign that started in September 2013 at the Monticello Nuclear Generating Plant (MNGP). In Reference 2 , the NRC provided a Request for Additional Information (RAI) regarding NSPM's application i n Reference

1. Enclosu r e 1 to this letter provides NSPM's response to the NRC RAls.

Document Control Desk Page 2 As detailed in Reference 1, NSPM determined that the integrity of the field closure welds for DSCs 11-15 can be reasonably assured. The dry shielded canister system employed by NSPM for MNGP provides multiple layers of defense in depth, for example fuel selection criteria, fuel cladding, approved designs, use of qualified materials, qualified multi-pass welding processes, qualified personnel and helium leak checks to assure weld integrity and confinement. NSPM has extensively analyzed all available evidence of the welds and welding process and identified potential indications, then postulated conservative hypothetical indications to assess uncertainties under design loading conditions to reveal the extensive available margin. Further, NSPM has utilized an independent industry weld expert to ensure a thorough understanding of the welds and welding processes. The enclosed RAI responses provide additional details that address NRC questions related to the exemption request and supporting analyses. These responses further exemplify the NSPM position that reasonable assurance exists that the canister welds are structurally acceptable and can perform all intended functions notwithstanding the nonconforming PT examinations on the closure welds. Furthermore , NSPM maintains that with DSCs 11-15 loaded in their respective horizontal storage modules , the canisters are in their safest possible configuration. Enclosure 2 provides Welding Procedure Specification (WPS) SS-8-M-TN, Revision 10. This WPS was used for the inner top cover plate (ITCP) and outer top cover plate (OTCP) welds on DSCs11-16. Enclosure 3 provides WPS SS-8-A-TN , Revision 8. This WPS was used for the ITCP and OTCP welds on DSCs 11-16. Enclosure 4 provides Procedure Qualification Record (PQR) PQR-1, Revision 2. This PQR documents qualification of the welding procedure specifications used for the ITCP and OTCP welds on DSCs 11-16. Enclosure 5 provides certified material test reports for the weld filler material heats used in the closure welding on DSCs 11-15. Enclosure 6 provides procedure 12751-MNGP-OPS-01 , " Spent Fuel Cask Welding: 61 BT/BTH NUHOMS Canisters" , Revision 0. This procedure was used to perform the closure welding on DSCs 11-16. Enclosure 7 provides procedure 12751-MNGP-QP-9.201, " Visual Weld Examination ", Revision 0. This procedure was used to perform the visual examinations of the closure welding performed on DSCs 11-16. Enclosure 8 provides Structural Integrity Associates, Inc. (SIA) Report 1301415.403, " Assessment of Monticello Spent Fuel Canister Closure Plate Welds Based on Welding Video Records", Revision 2. This report documents the SIA assessment of the closure welding performed on DSCs 11-16 based on the review of weld head video records. Document Control Desk Page 3 Enclosure 9 provides SIA Report 130415.402 , "Review of TRIVIS INC Welding Procedures Used for Field Welds on the Transnuclear NUHOMS 61 BTH Type 1 & 2 Transportable Canisters for BWR Fuel", Revision 0. This report documents the SIA assessment of the welding procedures used to perform the closure welding on DSCs 11-16. Enclosure 10 provides welding data sheets and inspection records for the closure welding on DSCs 11-16. Enclosure 1 1 provides a computer hard drive which contains the ANSYS files used to analyze DSCs 11-15 in Enclosures 6 and 7 to Reference

1. The files provided in Enclosure 11 contain proprietary information and are sought to be withheld from public disclosure in accordance with 10 CFR 2.390. Enclosure 12 provides an affidavit executed by TN Americas , LLC (TN). As the owner of the proprietary information submitted in Enclosure 11 , TN certifies that the enclosed proprietary information has been handled and classified as proprietary, is customarily held in confidence, and has been previously withheld from public disclosure.

TN requests that the enclosed information be withheld from public disclosure in accordance with 10 CFR 2.390. Enclosure 13 provides TN Calculation 11042-0207 , " NU HOMS 61 BTH Type 1 DSC ITCP and OTCP Margin Evaluation for Maximum Weld Flaw", Revision 1. As a result of the response to the RAls provided in Reference 2 , NSPM determined it was necessary to revise the modeling descriptions presented in Section 4.1 of the calculation. Enclosure 14 provides markup pages for the exemption request submitted in Reference

1. While developing the response to RAI ST-2, it was determined that it was necessary to revise the description of using stress in lieu of strain margin(s) of safety as a basis for demonstrating structural perfo r mance of DSCs 11-15 using the limit load and elastic-plastic analysis methodology in multiple places throughout the exemption request. If there are any questions or if additional information is required , please contact Mr. Shane Jurek at (612) 330-5788. Summary of Commitments m itments and no revisions to existing commitments. Timothy J. O'Connor Senior Vice President and Chief Nuclear Officer Northern States Power Company -Minnesota Enclosures (14)

Document Control Desk Page 4 cc: Administrator, Region Ill, USNRC NMSS Project Manager, USNRC NRR Project Manager, Monticello, USNRC Resident Inspector, Monticello, USNRC L-MT-18-013 Enclosure 1 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION EXEMPTION REQUEST FOR NONCONFORMING DYE PENETRANT EXAMINATIONS OF DRY SHIELDED CANISTERS (DSCS) 11 THROUGH 15 NSPM On October 18, 2017, Northern States Power Company , a Minnesota corporation (NSPM), doing business as Xcel Energy, submitted a request for a permanent exemption for the Monticello Nuclear Generating Plant (MNGP). Specifically, NSPM requested a permanent exemption from the requirements of 10 CFR 72.212(a)(2), 10 CFR 72.212(b)(3), 10 CFR 72.212(b)(5)(i), 10 CFR 72.212(b)(11 ), and 10 CFR 72.214 for five NU HOMS Dry Shielded Canisters (DSCs), designated DSCs 11-15 , due to nonconforming dye penetrant (PT) examinations performed during the loading campaign that started in September 2013. By letter dated March 6 , 2018 , the NRC requested the following additional information. The response to this request for additional information (RAI) is provided below. Materials RAls RAI M-1 Provide the procedure qualification records for the welding procedure specifications (WPSs) used for the Inner Top Cover Plate (ITCP) and Outer Top Cover Plate (OTCP) welds. In Enclosure 3 , these are listed as WPS SS-8-M-TN Revision 10 (machine GTAW) and TN Revision 8 (manual GTAW). Enclosure 1 of the exemption request states: Notwithstanding the nonconforming PT examinations, the weld closures of DSCs 11-15 were performed under a 10 CFR 50 Appendix B QA [Quality Assurance] program , such that the canister integrity is otherwise assured. Accordingly, welding materials were procured to quality requirements, welding processes were developed and qualified for the given configuration , and welders were appropriately qualified to the Code requirements. The use of a qualified welding procedure is relied on to support the exemption request. However, observations from the review of the weld head videos appear to be inconsistent with expected observations when using a qualified welding procedure. This information is needed to determine compliance with 10 CFR 72.122(a). NSPM Response WPSs SS-8-M-TN , Revision 10, and SS-8-A-TN , Revision 8 , were used in the closure welding for DSCs 11-16. These documents are provided in Enclosures 2 and 3 , respectively. Procedure qualification record (PQR) PQR-1 , Revision 2 , is identified as the supporting PQR for these two WPSs. PQR-1 , Revision 2, is provided in Enclosure

4. Page 1 of 14 L-MT-18-013 Enclosure 1 NSPM NSPM concludes that the welds were performed under a 10 CFR 50, Appendix B, Quality Assurance program such that the canister integrity is otherwise assured. The welds were performed by qualified welders using qualified welding procedures. Structural Integrity Associates (SIA), an engineering consulting firm with over 20 years of experience resolving spent fuel storage issues which employs industry experts in the areas of structural analysis and materials engineering among others , reviewed the welding performed via available video records and determined that the welding was performed consistent with the qualified procedures. Welding procedures were qualified in accordance with Section IX of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code. As required by the Code , a test sample was welded and destructively tested to meet specific minimum requirements for procedure qualification. The WPS was prepared subsequently based on specific values of the essential variables used to weld the procedure qualification sample(s) having acceptable mechanical properties.

The Code provides allowable ranges of the essential variables that can be used based on the parameters tested. Weld data sheets documented that the qualified and approved welding procedures were followed for all welds. Machine weld head video files (VIDs) were reviewed by the chief welding engineer at SIA who is a fellow of the American Welding Society, has a doctorate i n materials science engineering and 50 years of experience in the application of materials science to the electric utility industry , primarily in the nuclear power industry. The VID review examined the welding conditions used and determined , based on the chief welding eng i neer's extensive nuclear welding experience , that the welding arc length , the wire feed entry , the arc lengths achieved , and the mo l ten weld puddle and deposit cha r ac t eristics were consistent with expectations for the specified welding parameters. The eight tack welds and all circumferential closure welds (both for the ITCP and OTCP that were available for review) utilized the WPS SS-8-M-TN, Revision 10 , gas tungsten arc welding (GTAW) machine welding procedure. The use of the manual GTAW weld i ng procedure was lim i ted to local i zed repairs and for cleaning up the corners of the keyway welds. Manual welds had no arc video records for review; therefore , their review relied on viewing from long range shop floor cameras. It was determined that manual welding was used in some instances based on the observed arc shine. Based on the preceding discussion , NSPM concludes that the observations from the review of the weld head videos are consistent with the use of qualified welding procedures. RAI M-2 Provide the certified material test reports (CMTRs) for the weld filler material heats used in the closure lid welding for DSCs 11-15. These heat numbers are identified as 737880 , 736908 and 527221 in Enclosure 3: Structural Integrity Associates , INC. Report 700388.401 , Revision 1 , Evaluation of the Welds on Page 2 of 14 L-MT-18-013 Enclosure 1 NSPM DSC 11-15 , Page 3-23, Table 3-1, Welder ID numbers and filler metal heat numbers used [4, 5 , 6 , 7, 8 , 9]. The use of a certified welding filler materials is relied on to support the exemption request. The CMTRs for these filler metals were not provided in the exemption request. This information is needed to determine compliance with 10 CFR 72.122(b). NSPM Response Weld filler material heat numbers 527221, 736908, and 737880 were used in the closure lid welding for DSCs 11-16. The CMTRs for these weld filler material heats are provided in Enclosure

5. RAI M-3 Provide the technical basis and evidence, such as measurements, of the actual thickness of the weld deposits on DSCs 11-15 to support the use of a weld deposit thickness that is greater than the weld design dimension.

The applicant stated that the inner top cover plate weld size (dimension of the weld throat) for DSC 16 was determined to be between 0.25 to 0.4" which is considerably larger than the minimum design thickness of 3/16 inch (i.e., 0.188"). The applicant stated that the increased ITCP weld size was considered applicable to DSCs 11-15. However, no evidence such as actual measurements of the ITCP welds were provided to support this assertion. This information is needed to determine compliance with 10 CFR 72.122(b). NSPM Response NSPM determined there is a reasonable expectation that the ITCP welds on DSCs 11-15 have an actual thickness of 0.25". The technical basis supporting use of a weld deposit thickness greater than the weld design dimension of 3/16" is derived from the following items: the actual phased array ultrasonic testing (PAUT) weld measurements for DSC 16, review of the VIDs for the ITCP welds on DSCs 13 and 16 by the SIA chief welding engineer , the weld design/geometry and component fit-up as well as the physical requirements to accomplish the weld per the qualified welding process using the same GTAW machine, and use of a limited number of welders. The NRC has previously reviewed and accepted the DSC 16 PAUT data including the understanding of the actual weld measurements by way of granting an exemption for DSC 16 on June 15 , 2016 (Agencywide Document Access and Management System (ADAMS) Accession No. ML16167A035). SIA's chief welding engineer reviewed the VIDs for the ITCP welds for DSCs 13 and 16. The chief welding engineer also provided an assessment of the physical welding process for this Page 3 of 14 L-MT-18-013 Enclosure 1 NSPM weld design and geometry. The procedures used for the welding and visual examination (VT) inspections are included as Enclosure 6 and 7, respectively. For the ITCP welds , the weld groove volume is small and the deposition rate nearly fills the groove with the root pass alone. The chief welding engineer noted that the weld root gap varied slightly around the circumference due to fit-up and unequal weld shrinkage as a result of root tacking (eight equally spaced tacks applied by machine welding). The small changes in weld groove volume resulting from the root gap variation appeared to cause small fluctuations in the groove fill observed on the plate side of the groove edge. The observations supporting this effect were minor variations from slight underfill to slight overfill at the plate edge during the root bead. During welding , the tungsten position frequently was adjusted to manage the molten deposit. The root bead crown appeared to be relatively flat and fused into the shell wall. It was noted that the welding arc was positioned approximately midway across the groove during root bead welding. The welding arc for the second weld bead was repositioned closer to the shell wall resulting in a deposit profile that is thickest at the shell wall tapering downward to the ITCP surface such that the molten material slightly washes over the edge of the ITCP. Weld pass 2 , the cap pass , clearly overfilled the groove. The completed weld geometry is a partial penetration groove weld having an unequal leg length fillet cap. The SIA chief welding engineer also noted that the deposition rates for all beads appeared consistent based on a visual assessment of the welding travel speed and molten weld puddle size. NSPM determined there is a reasonable expectation that the ITCP welds for DSCs 11-15 have an actual thickness of 0.25" because the weld groove height is 0.25" , the confirmation from the as-measured data from DSC 16 PAUT , the consistency resulting from the adherence to the qualified weld procedure and techniques, a lim i ted set of qualified welders using the same GTAW machine while implementing a controlled fit-up for the small weld groove volume , and maintenance of a consistent weld deposition rate. These considerations are supported by the PAUT measurements and assessment provided by the SIA chief welding engineer VID review of the DSCs 13 and 16 ITCP welds. RAI M-4 Provide the following: 1. " Assessment of Mon t icello Spent Fuel Canister Closure Plate Welds based on Welding Video Records", R. Smith and N. Mohr, SI Report 1301415.403.R2 , dated May 22 , 2014. 2. Letter report from R. Smith (SI) to J. Becka (Xcel) on " Review of TRIVIS INC Welding Procedures used for Field Welds on the Transnuclear NU HOMS 61 BTH Type 1 & 2 Transportable Canister for BWR Fuel" , SI Report 1301415.402.RO, dated January 30 , 2014. 3. The " welding data sheets" referenced in Enclosure 3 (Report 1700388.401.R

1) Page 1-1 , Section

1.0 INTRODUCTION

, 4t h paragraph. Page 4 of 14 L-MT-18-013 Enclosure 1 NSPM References 1 and 2 are cited in multiple instances in Enclosure 3 and are used to support the assessment of potential defects in the DSC 11-15 welds. The summary of the weld head videos provided in Enclosure 3 Appendix C is a summary of the assessment and is also incomplete as there is no specific comments associated with the DSC-16 weld. A more detailed assessment of the welding videos and weld data sheets beyond what is summarized in the exemption request Enclosure 3 is necessary

[to] assess the analysis provided for DSCs 11 through 15. This information is needed to complete the review in accordance with 10 CFR 72.122(b). NSPM Response The requested documents identified as items 1 and 2 above are provided in Enclosures 8 and 9 , respectively. The requested welding data sheets (item 3), in addition to inspection results, are provided in Enclosure

10. The requested documents form part of the independent expert review of the welding that was performed by SIA. SIA was selected to perform these reviews based on their extensive knowledge and experience with the welding processes employed.

Based on this expert review , NSPM determined that there is a reasonable expectation to conclude the closure welds performed on DSCs 11-15 are of sufficient quality to protect the health and safety of the public. This conclusion is based on the fact that the welding process used is expected to provide adequate quality welds , a video review confirmed that appropriate welding practices were used , the closure welds on DSC 16 , as found by the NRC , provide reasonable assurance of adequate protection to the health and safety of the public, and the flaws identified via PAUT of DSC 16 are considered representative of potential flaws in DSCs 11-15. A description of the SIA review is provided below. Enclosure 9 provides SIA report 1301415.402, Revision 0. This report documents a review of the welding procedures to determine if the welding process associated with the closure welds would produce suitable quality welds. The report concludes that the GTAW welds in DSCs 11-15 can reasonably be expected to be of good quality and free of in j urious defects. This conclusion is based on the characteristics of the GTAW weld , the controls outlined for the welding program , and the fact that the welds and base metals are austenitic stainless steels. Enclosure 8 provides SIA report 13014145.403 , Revision 2. A summary of this report was included in the exemption request in Appendix C to Enclosure

1. This report documented a review of the weld quality by using the available weld head videos. This report provides a sampling of typical welding practices across the industry. Evidence of good welds being applied is ample and dominates the video. DSC 16 was demonstrated through PAUT and analysis to be acceptable even though SIA concluded, based on the review of available video records, it had the greatest likelihood for defects. Appendix B to Enclosure 2 of the exemption request provided SIA report 1301415.405 , Revision 0. This report performed a qualitative assessment of the likelihood that the welds Page 5 of 14 L-MT-18-013 Enclosure 1 NSPM might contain unacceptable defects. The report concluded it was reasonable to expect the welds were free from l arge discontinuities based on many factors including the app l ication of a proven and robust welding system designed specifically to support these canister field we l ds , use of ductile and easily weldable base materials , and the use of so l id wire filler material designed for welding these base materials.

The report inc l uded a review of literature regarding generation of defects in stainless steel weldments and concluded that the likelihood for large defects was not supported. The report concluded the most likely lack of fusion (LOF) defects would be inte r mittent in nature and not expected to have a through thickness dimension greater than one weld bead. These conclusions were confirmed by the PAUT performed on DSC 16. Enclosure 3 to the exemption request provided SIA report 700388.401 , Revision 1. A summary of this report was provided i n Appendix C to Enclosure 1 of the exemption request. This report performed an evaluation using all available data including the shop floor videos and the available PAUT results to determine if the types and extent of flaw distributions found in DSC 16 were representative of DSCs 11-15. This report concluded that , based on the evidence developed by reviewing the videos and the rest of the available evidence , it was reasonable to conclude that the conditions determined for the closure welds in DSC 16 are representative of the welds in DSCs 11-15. The tabulated details for DSC 16 weld beads have been updated for the ITCP to separate the original start of bead 2 (VID-2) and the restart from the original keyway position after grinding (VID-3) and are provided below as Table 1 to better summarize the observations. Table 1 -Updated DSC 16 Description of the ITCP to Shell Weld Beads Separating VID-2 and VID-3 [Note: VID-3 was a restart welded over the original keyway start of VID-2] ITCP i s Inner To p Cove r P l a t e -0.7 5" Th i c k W el d 3/16" h i g h X 0.31 " wi de We l d L engt h (OTCP 6 6.25 x Pl= 208") & (I TC P = 1 97") O TCP -O ut e r T op Co v e r Pla t e-1.25" Th i ck We l d 5/8" h i gh X 1.0" wi de S i p h on Ve nt B l ock 80.5" t o 915" l o c at i on of We l d s t arts) V I DF ll e leng th TS W el d Location Date n meStart nmeEnd Du r a ti on (i n/m i n) Layer No. Tu n gs t e n Comments Name (m i n) (i n) Blas comp DSC-1 6 (VIDs Inner and O u te r 16) ITCP t o She ll 1 10/16/2013 9: 24: 19 10: 29: 42 65.5 197 3.0 1 (Root) Li d Some l ac k of fill to she ll s i de wal l. D i fficu l t i es w it h w i r e feed gu i de pos it ion. ITCP to She ll 2 10/16/2013 11: 14: 48 11:20: 04 6 18 3.0 2 She ll Stopped and r estarted from beginning at k eyway. ITCP t oShe ll 3 10/1 7/2013 11: 26: 4 0 12: 32: 08 66 197 3.0 2 She ll Weld pool runn i ng a head o f a r c. E l ect r ode wan d ers away from s i dew a ll. O T CP to Shell 3 10/17/2013 9: 39:40 10: 50: 18 70 208 3.0 1 (Roo t) Li d V i sible s urface oxidat i on of weld bea d. OTCP to Shell 5 10/17/2013 11: 50: 32 12: 56:10 66 208 3.2 2 She ll V i s ible surface ox i dat i on o f weld bea d. Ga p s i n crown of fi r st b ea d a l o ng shell s i d e wal l. OTCP to Shell 6 10/17/2013 13:01: 57 1 4:10: 25 68 208 3.1 3 Lid Weld observed runn i ng ahead of the e l ec t rode. Tro u gh a l ong s i de of b ead. Ob serva b l e tr o u gh from p rev i ous bead a l ong OTCP to S h ell 9 10/17/2013 14: 47: 30 15: 46: 4 0 59 208 3.5 4 She ll she ll s i de. Non un i fo r m fi ll ing o b served. Bea d runs ahea d of a r c. O TCP to She ll 11 10/17/2013 15: 52:11 16: 49: 4 1 57.5 2 0 8 3.6 5 Li d W e l d ran smooth l y. Page 6 of 1 4 L-MT-18-013 Enclosure 1 RAI M-5 NSPM Provide an explanation for why the information summarized from the weld head videos (Enclosure 3 Appendix C) and the shop floor videos (Enclosure 3 Appendix D) appear to be inconsistent and in some cases contradictory For example: 1. Appendix C Page C-2 and Appendix D Page D-7 Table 5-8: DSC-16: a. ITCP and OTCP welding start and stop times are not in agreement.

2. Appendix C Page C-3 and Appendix D page D-5 Table 5-4: DSC-12: a. OTCP welding start and stop times are not in agreement.

b. Appendix C Page C-3 identifies grinding in layer #2 that is not identified in Table 5-4. 3. Appendix C Pages C-4 and C-5 and Appendix D Page D-5 Table 5-5: DSC-13: a. ITCP and OTCP welding start and stop times are not in agreement.

b. Table 5-5 indicated no grinding of the OTCP weld but Appendix C Page C-5 i ndicated that the weld in pass 4 appeared to have been ground. 4. Append i x C Page C-6 and Appendix D Page D-6 Table 5-6: DSC-14: a. OTCP welding start and stop times are not in agreement.

b. Table 5-6 i ndicated no grinding of the OTCP weld but Appendix C Page C-6 indicated that the weld in pass 5a appeared to have been ground. 5. Appendix C Pages C-7 and C-8 and Appendix D Page D-6 Table 5-7: DSC-15: a. OTCP welding start and stop times (and dates) are not in agreement.

This information is needed to complete the review in accordance with 10 CFR 72.122(b). NSPM Response The weld head video clock was approximately 1 hour and 17 minutes beh i nd the shop floor video clock. This difference between the clocks account for the majority of the inconsistencies between start and stop times noted in the RAI. For the remainder of the inconsistencies , it should be noted that judgment was required to ident i fy the exact weld start and stop t imes because it had to take into consideration such factors as camera angles , stripper bead activities , etc. Furthermore , grinding was confirmed to have occurred in all cases where it was Page 7 o f 14 L-MT-18-013 Enclosure 1 NSPM identified during the weld head video review but not the shop floor video review. The initial shop floor video review inadvertently missed the grinding that was performed. The weld head videos and the shop floor videos were both used for the evaluation performed by SIA. The information sought from each information source is different and were never intended to be tracked against each other. Therefore, the time stamps for each information source were never synchronized nor were they intended to be synchronized. The information derived from the review of the shop floor videos and weld head videos was used to identify the types and extent of activities being conducted for each canister , and to corroborate these activities where possible. The shop floor videos were used in a qualitative sense to infer weld related activities for the canister and were available for all canister welds except for the ITCP on DSC 12; however weld head VIDs were incomplete and portions were unavailable for review (i.e., DSC 11 and certain segments in several of the other canisters). The principal value was to examine the types and frequencies of weld-related activities to look for similarities or significant differences. In some cases , periodic grinding was apparent and in other cases , local weld repairs were observed. However, no significant differences were seen in work activity or frequency. This information was used as supporting information for the evaluations. RAI M-6 Provide additional information to support the assumed flaw size and location of the potential lack of fusion flaws in the ITCP welds for the " Reasonable Assurance of Weld Integrity" and the " Additional Stress Margins in Welds" analyses. For the " Reasonable Assurance of Weld Integrity" analysis Enclosure 1 , Page 30 of 75 states the following: LOF [lack of fusion] defects of similar sizes and locations seen in DSC 16 are reasonable assumptions for the other ITCP closure welds. The assumptions made for the ITCP closure weld bounding analysis in DSC 16 are considered reasonable for all ITCP canister closure welds , the conditions of the ITCP welds are judged as similar for all canisters. Additional statements in this paragraph indicate lack of fusion defects that might form would likely be located on the vertical sidewall because of the weld groove geometry and because there is limited room to tilt the tungsten electrode towards the side wall. The lack of fusion defects in the sidewall of the ITCP weld on DSC 16 were modeled as a defect in the root pass or layer 1 of 2. It is unclear why weld layer 2 would not also contain lack of fusion defects. Weld head video is limited to DSCs 13 and 16 , and additional review of the welding process to qualitatively assess the potential for lack of fusion defects for the remaining DSC ITCP welds is not possible. In addition , the initial DSCs would have little to no benefit from any " learning curve" for the ITCP welds. In the " Additional Stress Margins in Welds" analysis , the assumed flaw size of 0.14" is used for ITCP weld flaw-2 in Enclosure 6 , " NU HOMS 61 BTH Type 1 DSC ITCP and OTCP Maximum Weld Flaw Evaluation ," AREVA Calculation 11042-0207, Revision 0. Page 8 of 14 L-MT-18-013 Enclosure 1 However, Enclosure 3 Section 3.1.4.1 (page 3-9 or 142/461 of ML17296A205) states: The video welding records (VIDs) reviewed for this weld did not show evidence of electrode tilt (working angle) towards the vertical sidewall to facilitate optimum tie-in to the vertical wall of the weld joint[ ... ]. Regardless , the VIDs suggested a nearly vertical tungsten orientation that required the molten weld metal to flow to the side wall with sufficient heat to fuse the bottom of the machined groove to the shell sidewall. The sluggish nature of weld metal flow (lava flow) and the issues encountered with maintaining the proper wire entry location due to the filler wire cast created variability in fusion conditions on the sidewall. NSPM The ITCP weld is 2 passes with a design thickness of 3/16" (0.188"). The maximum flaw size observed at the ITCP weld/DSC shell interface in DSC 16 was 0.09" according to the Phased Array Ultrasonic Testing (PAUT) results. Because ITCP weld video is limited to DSCs 13 and 16, additional review of the welding process to assess the welding practices and qualitatively assess the potential for lack of fusion defects for the remaining DSC ITCP welds is not possible. Based on the review of the welding video records in Enclosure 3, it appears that the ITCP weld joint would be susceptible to lack of fusion flaws at the ITCP weld to shell interface. Given the limited information provided on the ITCP welds and the combination of the weld joint geometry , unfavorable electrode position and the sluggish nature of the weld metal observed during the welding of DSCs 11-16 , it is unclear if the modeled lack of fusion defects in the ITCP weld would be representative of the possibility that lack of fusion defects located at weld to DSC shell interfaces could be present in both of the ITCP weld passes. Because it is not possible to assess through weld head videos whether DSCs 11 , 12 , 14 , and 15 may have lack of fusion defects in both weld passes that compr i se the ITCP weld, it is unclear whether the modeled flaw size of 0.14 inches would account for the potential for the ITCP welds to have aligned lack of fusion defects (i.e., lack of fusion defects in each of the two weld passes) located at the DSC shell to ITCP weld interface. Th i s information is needed to complete the review in accordance with 10 CFR 72.122(b). NSPM Response Enclosure 1 to the exemption request , Page 29 of 75, describes the applicability of the DSC 16 PAUT results and the structural analysis of those results to DSCs 11-15 (Enclosure 5 to the exemption request). As noted in the exemption request , NSPM determined that there is a reasonable expectation that LOF defects seen in DSC 16 are representative of the potential flaws in the ot h er ITCP closure welds. T hese conclusions were supported by SIA evaluations as more fully described in the response to RAI M-4 , which included the potential benefits of any learning curve. The following additional information regarding the ITCP welding is provided to support these conclusions. Page 9 of 14 L-MT-18-013 Enclosure 1 NSPM During the review of the available video records , SIA noted several observations regarding susceptibility for LOF defects located at the DSC shell interfaces being present in both the ITCP passes (root and cap passes). The root is established using an open root welding technique and the welding torch is positioned on the lid side of the open root joint such that the root is bridged with molten material that washes onto the canister shell wall. This is a common practice for open root geometries to control the weld puddle and avoid dropping molten metal through the gap between the two pieces being joined and blowing out the root. If too much of the molten puddle is directed toward the lid side , then insufficient washing onto the sidewall occurs and LOF defects can occur along the shell wall. Review of the VIDs that captured the root passes of the ITCP for DSCs 13 and 16 (the only ITCP VID information available) observed a potential for LOF at locations around the circumference where the welding arc position did not r emain centered on the weld groove. The fixed radial position of the weld head coupled with out-of-roundness of the shell wall caused the welding arc to drift away from the shell wall. This behavior is due to a lack of concentricity between the can i ster shell and the radial posit i on of the weld head as it travels around the circumference. As the shell wall moved further away from the welding arc, the molten weld puddle does not properly wash onto the shell wall , and LOF is favored and the welding arc must be repositioned. This behavior is consistent with the observed intermittent LOF indications that were seen along the shell wall associated with the root pass in DSC 1 6 PAUT inspection results. The second bead or cap pass was deposited w i th the welding arc positioned closer to the shell wall as an expected good welding practice with the intention of facilitating good sidewall tie-in and to minimize any potential for LOF defects. The deposit was seen to build preferentially along the shell wall and tapers uniformly downward across the top surface of the root pass as it flows over the edge of the ITCP. The second pass will remelt a small amount of the top of the root bead and recast that material with the second bead. The second pass deposit on the shell side is clearly above the locations where the LOF was suspected. Consistent with the intended purpose of repositioning the welding arc , the results of the PAUT inspection on DSC 16 identified sidewall LOF defects located in the lower port i on of the weld commensurate with the root pass tie-in to the sidewall. Further , all DSCs were welded using the same processes , procedures, equipment and welders. Shop floor video reviews confirmed similar practices were applied to all canisters. Thus , it is reasonable to expect that the welding arc positioning target would be simila r for all canister ITCP welds. The potential for alignment and stack-up of any LOF defects i s further reduced by the remelting which will occur when the second pass remelts a small amount of the top of the root bead and recasts that material with the second bead. From the SIA r eview of the shop floor videos , it was observed that DSCs 11-15 experienced a greater amount of rework during the welding process than was observed for DSC 16 for both the ITCP and OTCP. These details are tabulated in Enclosure 3 to the exemption request. The performance of rework is an indication that the weld i ng operators were alert to identifying unfavorable conditions as they developed during welding so that they could be corrected in-process. Therefore , it is reasonable to conclude that the probability for flaws in the closure welds of DSCs 11-15 should be no greater , and perhaps lower than DSC 16 due to observed in-process of the repairs to correct undesirable features. Page 10 of 14 L-MT-18-013 Enclosure 1 NSPM There were no observations suggesting that the second bead (cap pass) would produce additional sidewall flaws that might stack-up along the shell wall. To the contrary , significant and effective sidewall tie-in was observed at the shell wall for the second bead in both DSCs 13 and 16 ITCP closure welds. This effective tie-in was due to the closer proximity of the welding arc during the second pass. NSPM determined that there is a reasonable expectation that flaws would not stack up along the canister shell wall in successive weld layers. This determination is based on the consistency in welders and processes , and associated shift in welding torch position towards the shell wall for its intended purpose of improved side-wall tie-in. The improved side-wall tie-in from the second layer will minimize potential for any possible flaw stack up along the canister shell wall. Beyond this conclusion, NSPM provided additional analyses to evaluate flaws maximized to identify the maximum flaw size that can be tolerated at the design thickness of the welds while still meeting the acceptable design limits. PAUT examination on DSC 16 identified an actual weld thickness of 0.25" -0.40" and an actual maximum flaw height of 0.11" in the ITCP weld. This maximum flaw was extended to account for flaw uncertainties in DSCs 11-15 up to 0.14". The analyses determined that a connected ligament of 0.05" (e.g., 0.14" flaw in a 0.19" thick weld, 0.20" flaw in a 0.25" thick weld) is sufficient to meet the design limits. Thus , the flaws modeled in Enclosures 4-8 to the exemption request were based on the PAUT results for DSC 16 and expanded to account for flaw uncertainties. Additionally, margin is demonstrated in the fact that the flaws identified via PAUT in DSC 16 were all intermittent in nature whereas the conservatively modeled flaws are full circumferential. Further margin is identified in Enclosures 7 and 8 to the exemption request which account for as-loaded temperature and pressure conditions and site-specific side-drop accident conditions. RAI M-7 Clarify the size of the ITCP weld analyzed in the Enclosure 6 , " NU HOMS 61 BTH Type 1 DSC ITCP and OTCP Maximum Weld Flaw Evaluation ," AREVA Calculation 11042-0207 , Revision 0. Enclosure 6 Section 3 (Design Input/Data) and Section 4 (Methodology) both reference Enclosure 5 (" 61 BTH ITCP and OTCP Closure Weld Flaw Evaluation" AREVA Document No. 11042-0205 Revision 3). Enclosure 5 Section 3 (Design Input/Data) states the following: The ITCP is 0.75" nominal thickness. Per the Reference 5.5 drawing , it is welded to the DSC shell and vent/siphon block with a 3/16" groove weld. However , the ITCP l i d groove (weld prep) is 0.25" minimum , and it was confirmed that the weld is also 0.25." Enclosure 1 (Exemption Request for Nonconforming Dry Shielded Canister Dye Penetrant Examinations) page 29 of 75 states: Page 11 of 14 L-MT-18-013 Enclosure 1 For the ITCP weld [ ... ]The analysis calculates the critical flaw size for a weld size of 0.25 inch per the PAUT results for DSC 16 (which indicated a distance between the root and crown at the canister wall from 0.25 to 0.40 inches) in lieu of the design thickness of 3/16 inch. This increased weld size is considered equally applicably to DSCs 11-15 based on the joint configuration and same weld i ng process application. NSPM Subsequently , Enclosure 1 page 32 of 75 references the analysis in Enclosure

6. However , in the discussion of the results contained in Enclosure 6 , page 33 of 75 of Enclosure 1 states: The maximum modeled weld flaws for OTCP to DSC shell weld are 0.43 inch and 0.42 inch in height , which represents about 85% through-wall of the 0.5-inch minimum weld throat. The maximum modeled full-circumferential weld flaws for the ITCP to DSC shell weld are 0.16

cos(45°) = 0.11 inch and 0.14 inch in height , which represents respectively 58% and 74% through-wall of the 0.19-inch minimum weld throat as shown in Figure 7 (note that in Figure 7 , weld heights are labeled as weld lengths).

These statements appear to be provide contradictory information and it is not clear whether the ITCP weld is modeled as the minimum design thickness or as the minimum measured thickness from the PAUT results for DSC 16. This information is needed to complete the review in accordance with 10 CFR 72.122(b). NSPM Response The calculation provided as Enclosure 4 to the exemption request evaluated the critical flaw size based on the maximum radial stresses in the welds due to design loads. This analysis modeled a 0.25" weld. The calculation performed in Enclosure 5 to the exemption request evaluated DSC 16 flaw conditions. These analyses modeled the weld groove as 0.25"; however, the weld was modeled using the weld design thickness of 3/16". The detailed dimensions of the model are shown in Figure 4 of Enclosure 5 to the exemption request. Conservatively , 0.09" and 0.11" full circumferential flaws were modeled. Enclosures 6 , 7 , and 8 to the exemption request used the model developed in Enclosure 5 and , therefore , used an ITCP weld thickness of 3/16". Structural RAls RAI ST-1 Provide the following ANSYS files used to analyze DSCs 11-15 in Enclosures 6 and 7, including load cases Internal Pressure 2D-Axisymmetric model and Side Drop 3D-Symmetric model with extensions: .db , .inp, .err , .mntr, .out , .db, and .rst , and revise modeling descriptions presented in Section 4.1 of Enclosure 6 accordingly. Page 12 of 14 L-MT-18-013 Enclosure 1 NSPM The aforementioned files are needed to verify modeling details which are not being sufficiently captured in a text format (exemption description). Modeling details regarding element type, distribution (mesh), flaw depiction, constitutive material properties , and loading in both 20 and 30 space are most directly presented in the ANSYS files themselves. As an example on the need for clarifying modeling details description , the staff noted that, on page 6 of the enclosure, the applicant states (underscores added): Initial ANSYS finite element iterations were performed by increasing all the four flaws by a very small length resulting in a negligible increase in plastic strain. l.!:l the second step very large flaws where considered (leaving only one element of the model connected at each flaw) resulting in excessive strain for the plastic side drop analysis. Similarly, few more iterations were performed such that the weld flaw reaches close to acceptable strain limit for the elastic-plastic side drop analysis. Only the final flaw configuration is presented in the document. Specifically, to add clarity to the above modeling description , the applicant needs to consider: (1) If finite element iterations are not AN SYS inherent for a limit load analysis, describe the process of selecting and monitoring the flaw length increment , which resulted in a " negligible increase" in plastic strain , (2) Clarify whether or not the resulting " one element" configurations are realized to the limit load plastic hinge formation at the welds with maximized flaws by presenting appropriate finite element meshing annotation, which depicts nodal displacements for all the adjacent elements connected to the element incipient to the plastic hinges formation for the collapse load determination, (3) Revise , as appropriate , the statement , "[f]ew more iterations were performed ... for the elastic-plastic side drop analysis ," to recognize the " iteration" in context is ANSYS inherent for an elastic-plastic analysis methodology , and (4) Revise, as appropriate , the statement , "[s]uch that the weld flaw reaches close to acceptable strain limit," by recognizing that the elastic-plastic analysis is performed to demonstrate large strain ductility demand to be within the American Society of Mechanical Engineers (ASME) Code strain acceptance limits. NSPM Response The requested ANSYS files are contained on a computer hard drive and are provided as Enclosure

11. The model from the calculation provided in Enclosure 5 to the exemption request was also used in the calculation provided in Enclosure 6 to the exemption request.1 Therefore , model details like element types, mesh distribution , material properties , and loads were not repeated in Enclosure

6. Only the details of the variations were provided.

The intent of the word " iteration" was not the internal iterations AN SYS uses to obtain convergence in a non-linear analysis. Rather , the use of the word " iteration" was meant to illustrate the repetition of the analyses that were performed to obtain the largest flaw that can exist in OSCs 11-15 while ensuring maximum plastic strain remains below the ASME code acceptance limit. Section 4.1 of the calculation provided in Enclosure 6 to the exemption 1 T h e methodology used in Enclosures 4-8 to the exempt i on r equest is the same as used i n Enclosures 2 and 4 to the exemptio n r equest for DSC 16 submitted on Septembe r 29 , 2015 (ADAMS Access i on No. ML15275A023), which was granted by the NRC on June 15 , 2016 (ADAMS Accession No. ML16167A035). Page13of14 L-MT-18-013 Enclosure 1 NSPM request has been revised to clarify this point , and to make the further changes requested in this RAI. Revision 1 of TN Calculation 11042-0207 is provided as Enclosure

13. RAI ST-2 Regarding Exemption Request Enclosure 1 , revise the description of using stress in lieu of strain margin(s) of safety as a basis for demonstrating structural performance of DSCs 11-15 using the limit load and elastic-plastic analysis methodology. Page 2 of the enclosure noted that reasonable assurance of weld integrity is demonstrated by adequate stress margin in welds to accommodate flaws. The use of the word , " stress" does not reflect , in context , that only " strain" acceptance criteria in terms of ductility demands were considered in the closure weld evaluation. Similar descriptions i n this and other enclosures may also need to be revised , as appropriate. This information is needed to complete the review in accordance with 10 CFR 72.236(1).

NSPM Response Enclosure 14 provides a markup of the affected pages to reflect the requested changes. While preparing the mark up pages being provided in response to RAI ST-2 , NSPM discovered a reference to an incorrect enclosure on pages 2 and 29 of 75 in Enclosure 1 to the exemption request. Mark-ups to reflect the proper references are included in Enclosure

14. Page 14 of 14 ENCLOSURE 2 TRIVIS, INC. WELDING PROCEDURE SPECIFICATION SS-8-M-TN, REVISION 10 2 pages follow TRIVIS INC.* WELDING PROCEDURE SPECIFICATION WELDING PROCEDURE NO. SCOPE: This document is lo provide essential And non-essential vnrinl.Jle s th11t will be WPS SS-8-M-TN used for the GTA W machine welding of Spent Fuel Cnsk ASSemblles. REVISION 10 SUPPORTING PQR(s) PQR-1, Rev. 2 PAGE l OF 2 WELDING PROCESS I. GTAW TI'PE Machine -Cold wire QW401 2, NfA TYPE NIA JOINT DESIGN;;;.* OW402 *:* .... /;;* . * .. .-**,,. :ii****:*

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1: BASE METALS.a..QW403 .. C , -'*:*~,:. ,'**. . i**, . : .. *.: ; _ ... _ ... * ...... ~-._:: ! ..... ****.!. Shieldi112 Oas Argon P-No 8 Group. No All toP-No 8 Group. No All Percent Comp. (Mixture s) 100%Argo n ----111ickness Range (Bnse Metal): Shlel<llnn Oas flow Rate 10-50 CPI-I Groove 0.1875" to 8.0" Purge Gas NIA flow Rnte NIA CFH Fillc1: Unlimited Trailinl?. Shieldllll?. Gas & Composition NIA Pioe Diameter Rnn1;e: NIA Groove: NIA Fillet: NIA Other NIA Other NIA Maximum Pass Thickness 0.500" *: ELECTRIOi\l /CHARACTERJSTICS

.: ;, 0\\1409 .'. * ( *c, .* )o *('*:*:.:*..;.:,.:-,.:* FlLLER METALS:...:'OW404 *** ,' .. ... ;. * ..... -* . ,, ...... .. -.. Current & Polarity ). DCSP 2 . NIA . '* .,* .. ., ' F*No. I. 6 2. NIA .Am os Rnnl?.c ). 150-350 2. NIA A-No. I. 8 2. NIA Volts Range I. 9.13 2. NIA SF A Spec. No. 1. 5.9 2. NIA Tt1111?.sten Elect. Size 118" Type I or 2% t horiated (Note 3) A \VS Class No. I. ER.308 2. NIA Tungsten fo:te11sion As Reauire<l Usoo!Tlux: Not nllow,:d Transfer Mode NIA Size ofFiller Metal: Pulsin2 Current Allowed I. .035" 2. NIA Wire Feed Sneed 40-200 (PM Maximum Weld Depo sit Thickness:

Groove l. 8.0" max 2. NIA .TECHNIQUE.:.'QW410

. . *. ,:-.. .* .. ...... :..:* *=---~*\~*-:,.~:.

... ' . 'r : .. :. .*. .. *, . *, -*:! Consumable ln se n: No Pillet size allowed: Unlimited String or Weave Bead: Other: NOTE-Autogenous welding Is not pennittcd. I. Strinser 2. NIA NOTE-All filler mclal used shall be solid, b nre wire. Orifice or Gas Cup Size 4-12 lnitinl & lutema ss CleMin2 Per project specific procedure POSITION*:..:: QW405. *,"' *:,;:*.,.'.* * ***.,:,, '* ,. -,*. ,, Method of Dack Go1u?int?. None '* a* *_,, Welding Posltion(s): Oscillation 0.0" t o 0.3" Groove 10 Ffllet 21-' Contact Tube to Work Distance NIA Welding Prol',r ession NIA Multiple or Slngle Pass (per side): ). Multiele 2. NIA , PREHEAT ,;,c.OW406 *,::.:** **-C'.*:. ,. :1 *.~* :,*. '* .*, ..*.:.-:.**

*. . ,****: !.* Muhiole or Single Electrodes Sint?.le Preheat Temp. Min. 60 Of Travel Speed Range: lnlcrpass Temp. Max. 350 Of ). A s Required 1PM 2. NIA 1PM Preheat Maintenance NIA Peeninit Not allo wed Other NIA Other None REMARKS: (I) DELETED (2) The A \VS Manufacturer's Operating Manual m ay be u sed throughout production, as needed , to ensure proper equipment operation, (3) All final welds joints to contain a minimum of2 weld pa sses. (4) NIA as u s ed in this WPS means Not Applic ab le , Not U se d, or Not Permitted as appropriate.

PREPARED(~,,, *;~_J,,;,,_ -'/-i z~ &i IL CODE(s) QUALIFIED TO ASMEIX REVIEWED! '/<!)t!f11{{#/1Ul. "iii.~ :_<f .d!Z!JL;/t_ ,/YJ -A.-,2 CODE USAGE 831.1 , ASME VIII. ASME 111 1 ASME XI APPROVED: 'f -i '? *'20 II // TRIVIS INCORPORATED WELDING PROCEDURE SPECIFICATION WELDING PROCEDURE NO. WPS SS-8-M-TN REVISION JO PAGE 2 OF 2 FILLER 1\IETAL GAS ELECTR I CAi. DATA WELD WELDING TRAVEL LA\'ER(s) PROCESS FLOW RATE SPEED SIZE A\\'S CJ.II) T\'PE/ AMPERAGE VOLTS (1PM) (in,) CLASS T\'PF. POLAR RANGE RANGE SHIEL_D PURGE All GTAW .035" ER308 Argon 10-50 NIA DCSP 150-350 9.13 As required Notes: 1. This WPS shall be used in conjunction with the current project specific procedure.

2. Other joint details and weld repairs may be welded with this WPS. MAX, SINGLE OEAIJ WIDTH ((11 ,) 1.0" 3. Other Lanlhan11ted and Ceriatcd Tungsteu m11y be us ed. Pure tungsten (100%) electt*odes are not approved for use. 4. For diss im ihtr base material thicknesses, thcl'e shall be no limitation on the maximum thi ckness of the thicker production member In joints or similar P-Number materials per QW-202.4.

\Ncl02&3 2 PLACES WEl05 PT ~OO T &F l>W. ~-< ENCLOSURE 3 TRIVIS INC. WELDING PROCEDURE SPECIFICATION SS-8-A-TN, REVISION 8 2 pages follow TrlVis Incorporated WELDING PROCEDURE SPECIFICATION SCOPE: This document is to provide essentinl nnd non-essentinl 1*1u*inbles thnt will be used for the GTA W nnd SJ\fA W mnnual welding of Spent Fuel Cnsl< nsscmblics. SUPPORTING PQR(s} WELDING PROCESS QW401 1. 2. PQR-1, Rev. 2 GTA\V NIA WELDING PROCEDURE NO. WPS SS-8-A-TN REVISION 8 PAGE 1 OF TYPE TYPE 2 Manual NIA :c JOJNT DESIGN ~-ow402 *., , *:*,,* .. .. *:::~ ** .*.,: .. "/ ,*POSTWELDHEAT , TREATMENT.a:.OW407'-.:;.*,;*:-,,.***,,:, Joint Design Groove and fillet Welds Temp Range. NIA Backlnl! \Vi1lt or without Time Range NIA Backinl! Material PS weld metal, ceramic Other NIA Retainers No NIA Root SpacinR See project specific procedur.: for detail NIA BAsEMETALS

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,. *.*c y,,<-* *** .. *., Shieldinl!. Gas Argon P*No 8 Group. No All to P-No 8 Group. No All Percent Comp. (Mixtures) 100%Argon --Thickness Range (Base Metal): GTAW 0.1875" to 8.0" SMAW N I I\ Pipe Diu111eter Range; Shieldine Oas flow Rntc Purise Gfts NIA Flow Rate Trnilln!! Shieldine Gos & Comoosition 10-50 CFH ---'N'-/""'A:....-_ CFH NIA Groove All Fillet All Mfl.*dmum Poss Thickness 0.500" Other NIA Other NIA NIA -----"'----------

._/_, ,_*::_::_. _ ... _._. *-*-* t--C_u_rr_e1_ll_&_P_ol_ar_it~y_l._ DCSP 2. NIA Amos Range I. 40-140 2. NIA FILLER J\IETAI:S'-::, ow4M :. .... **, .. '. .. i*.: ... . ' . f*No. I. 6 2. A-No. I. 8 2. NIA Volts RanS!,e I. Monuol 2. NIA SF A Spec. No. I. 5.9 2. NIA Tungsten Elect. Size 1/8" Type EWTh-2 A \VS Class No. I , ER:308 2. NIA Tlingst e n Extension W' to Y.." Transfer Mode I. NIA 2. NIA Size ofFilkr Metal: Pulsi111!, Current I. NIA 2. NIA 1. 1116", 3/32", 1/8" 2. NIA Electrode

\Vire Feed Soeed J. NIA 2. NIA Maximum Weld Deposit Thickness: Other: Other Lanlhanatcd and Ccriatcd Tungsten may be used. --------------, Groove I. 8.0 max 2. NIA -TECHN°IOUE f..Q\V410°:*-'*,,,.. *: '*:-,-<o:,.:i:,-,,.. . .J.,,. * *****'* .,:,, ., .. * .. , ... -::'. *: , .. _ Fillet I. Unlimited

2. NIA String or Weave Bead: Consumable lnseri No I. String and/or Weave 2. NIA Other Flux is not oennined for GTAW aoollcatlons.

Orifice or Gas Cuo Size 4-12 Note: All filler metal shall be s olid, bare wire. Initial & lnterpass Cleanini See Proiect Procedure , pos1TION=:.: ow4os::**,.1 .* i: -*.-* ... * <.;, .. * * * --*. Method of Back Gouging None Welding Position(s)

Oscillation NII\ Groove All Fillet All Contnct Tube to Work Di s tance NIA Welding ProRression Uphill Multiple or Single Pass (p e r side): I. Multiple 2. NIA . ,, .. .. , . "'** ... P .. R""E_H_E_A_T

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- Preheat Maintenance I. One to Four NIA !PM 1PM 2. Pecniiw. Not allowed Other NIA Other 'Ilic mnximum wcnving width is restricted lo 0.625" REMARKS: (I) DELETED (2) DELETED (3) Autogcnous welding is not permittc:d. . (4) NIA as used in this WPS means Not Applicabk , Not U s ed, or Not Pennitted as nppropriote. (S) DELETED
PREPARED:

{ -~ J _, -,'/*z Jr,!'cJ// CODE(s) QUALIFIED TO ASMEIX REVIEWED: J. vii// -f',.:IIMi 1--------------------------1 APPROVED: -* * /2 /l., l. CODE USAGE B3 l. l , ASME VllJ, ASME Ill. ASME XI I'/ TriVis lncorpornted WELDING PROCEDURE NO. WPS SS-8-A-TN WELDING PROCEDURE SPECIFICATION REVISION 8 PAGE 2 OF 2 FILLER METAL GAS ELECTRICAL DATA :-.ux. WELD WELD TRAVEL SINGLE LAYER(,) PROCESS FLOW RATE SPEED DEAD SIZE AWS C:fH T\'PE/ AMPERAGE VOLTS (1PM). WIDTH (h1.) CLASS TYPE POl,AR, R,\NGE RANGE (111,) SHIF.LD PURGE Root GTAW 1/16" ER308. , Argon IQ.SO NIA DCSP 40-70 Manual Manual 1.00" to GTAW 3/32" ER308 Argon 10-50 NIA DCSP 50-140 lvlnnunl Manual 1.00" remainder GTAW 1/8" ER308 Argon l 0-50 NIA DCSP 60-140 Manunl MMual 1.00" NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA Notes: 1. This WPS shall be used in conjunction with the current projed specll1c pl'ocedure.

2. For dlsslmllnr base materlAl thicknesses, there shall be no limitation on the maximum thickness of the thicker production member 111 Joints ofslmllnr P-Number mnterlnls per QW-202.4.

3. The sum of the root nnd hot pnss(es) thickness nrc to be npproxinrntely 0.125" to 0.1875" for open root welding only. 4. DELETED 5. Other joint dctRlls and weld repairs mny be welded with this WPS, \\tl02&) ?HJ.C U ENCLOSURE 4 TRIVIS, IN

C. PROCEDURE

QUALIFICATION RECORD PQR-1, REVISION 2 3 pages follow QW-483 SUGGESTED FORMAT FOR PROCEDURE QUALIFICATION RECORD (PQR) (SEE QW-201.2, SECTION IX, ASME BOILER AND PRESSURE VESSEL CODE) RECORD ACTUAL CONDITIONS USED TO WELD TEST COUPON COMPANY NAME ______ ~T=r~iV~is~l=n=c~--------------------------PRO CEDURE QUALIF I CATION RECORD NO. __ !_ Revision WPS NO. SS-8-M for GT AW and SS-8-C for SMAW 2 DATE 08/04/20 1 0 WELDING PROCESS (ES)_~G~T~A~W~a=n=d~S=MA~W~--------------------------------- TYPE S (MANUAL AUTOMATIC SEM I-AUTO) MACHINE and Ma nu a l JOINTS (QW-40 3) SEEPAGE 3 Groove D esign of Test Cou p on (For combination q u a lific a ti ons, the deposited weld metal thi ckness s h a ll be reco rd e d for each fi ll er meta l o r process used) BASE METALS (QW-40 3) POSTWELD HEAT TREATMENT (QW-407) Material Spec. A240 Temperature NONE Type or Grade 304 Time P-No. 8 toP-No. 8 Other Thickness a/Tes t Coupon 1.5 Diam eter of Test Coupon PLATE Other Heat N um ber HT-604433-A GAS (QW-408) Type of Gas or Gases Argon Composi tion of Gas Mixture We l ding Grade Other FILLER METALS (QW-4 0 4) Weld Metal Analysis A-No. 8 Size of Filler Metal .035" and 1/8" ELECTRICAL CHARACTE RISTI CS (QW-40 9) Filler Metal F-No. 6 and 5 Current DC SF A Specification 5.9 and 5.4 Polarity EN fo r GT AW a nd E P for SMAW AWS Classifica tion ER3 1 6 and E316L Amps See Pag e 3 Volts -See page 3 Other No p ass exceeded Yi" deposit thickne ss and n o autogenous Tungsten Electrode Size See page 3 we ldi ng was permitted Other POSITION (QW-505) Position of Groove 1G Weld Progression (Uphill, Downhill) NA TECHNIQUE (QW-410) Other Trave l Speed l" -3.5" per m inute Str in g or Weave Bead Bo th Osci ll a ti on 1.25" Mu l t ipa ss or Single Pass (pe r s id e) Mu lti pass PREH EAT (QW-406) Othe r Preheat Tem p. 50 F Int erpass Temp. 350 F Other Page 1 of3 Tr i Vis In co r porated PQR NO. I , Rev 2 page 2 of 3 Te n s il e Tes t (QW-15 0) ULTIMATE ULT I MATE TYPE OF SPECIMEN NO. WIDTH THICKNESS AREA TOTAL LOAD UNIT STRESS FAILURE AND LB . PSI LOCATION Tl . 6685 .7535 .5022 43 , 809 87 , 000 WM-D u ct i le T2 .574 7 .7500 .4310 38,591 89 , 500 WM-Ductile B l .7265 .7520 .5478 47,236 86 , 000 WM-D u c til e B2 .7237 .7550 .548 4 47,4 1 2 87,000 WM-Duc ti le G u ided-B e nd Tests (QW-1 6 0) TYPE AND FIGURE NO. RESULT S i de Bend 1 SAT Side Bend 2 SA T S i de Bend 3 SAT Side Bend 4 SAT To u g hn ess Tes t s (QW-17 0) SPECIMAN NOTCH NOTCH TEST TEMP IMPACT LATERAL EXP DROP WE I GHT N O. LOCATION TYPE VALUES %SHEAR MILS BREAK NO-BREAK F ill et-We ld Test (QW-18 0) Re s u l ts -Sat i sfac t ory: Ye s D No D Pe n etra t ion into Pare n t Metal: Yes D No D Macro-Resu l t s _______________________________________ _ O th e r Tests T y p e o f T es t ___________________ _ Deposit Ana l ysis ________________________________ _ O t her ___________________________________________ _ We ld ers Na m es: ~A=l~F~er=gu=so=n~----- Sta m p No: Tests Conducted b y: ___ L=AB'-=..,,O=RA~T~O=R=Y~T=E=ST=I=N~G~IN~C =*-----Laboratory Te s t No. T II 03 7-05-11-29957-1 We certify that the statement s in thi s record are cor r ect and th a t the tes t we l d s were prepared , welded, and te s ted in acco r dance w i th the re qui rement s of Section IX of the ASME Co d e. Date:_~08=/0~4~/2=0~1~0 ________ _ PAGE 3 OF 3 Tr i Vis I ncorporated PQR I , Rev.2 Ba c king Plate Bead HW HW Layer A mp Volts Root 11 12.2 2 12 1 2.2 3 12 1 2.2 4 14 1 2.2 5 14 12.2 6 12 1 2.2 7 12 12.2 8 NA NA 9 NA NA 10 NA NA 11 NA NA 12 NA NA 13 NA NA 14 NA NA 1 5 NA NA 1 6 NA NA 1 7 NA NA 18 NA NA 19 NA NA 2 0 NA NA 2 1 NA NA 22 NA NA 23 NA NA 24 NA NA 25 NA NA 26 NA NA 27 NA NA 28 NA NA 29 NA NA 30 NA NA 3 1 NA NA 32 NA NA 33 NA NA 34 NA NA 35 NA NA 36 NA NA 37 Pri 3/4" S MAW ** ~I 1 /8" E 3*1 6 L 3/4" G T /', , W Ma c hine .035" ER 3 1 6 BG Pri Am p s Am p s Volts 300 270 9.5 32 0 300 9.5 32 0 300 9.5 320 300 9.5 3 40 330 9.7 320 300 9.7 320 300 9.7 1 25 NA 2 4-2 6 12 5 NA 24-26 1 25 NA 2 4-26 1 25 NA 2 4-26 1 25 NA 2 4-2 6 125 NA 2 4-26 125 NA 2 4-2 6 1 25 NA 24-26 1 25 NA 2 4-26 125 NA 2 4-26 1 25 NA 24-26 1 25 NA 2 4-2 6 1 25 NA 24-26 125 NA 24-26 1 25 NA 24-26 1 25 NA 24-26 1 25 NA 2 4-26 1 25 NA 24-26 1 25 NA 24-26 1 25 NA 24-26 1 25 NA 24-26 1 25 NA 24-26 125 NA 24-26 1 25 NA 2 4-26 1 25 NA 2 4-26 1 25 NA 2 4-26 1 25 NA 24-26 1 25 NA 24-26 1 25 NA 24-26 Primary WFS 80 120 13 0 150 150 130 130 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA N A NA NA BG=Back Ground Pri= Primary HW=HotWire WFS=W ir e Feed Speed IPM= Inches Per Minute BG Travel WFS IPM 70 1.20 100 1.25 1 20 1.25 1 20 1.25 140 1.25 120 1.25 120 1.25 NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR NA NR TempF We ld er Notes at sta rt ID 70 WS-1 5 lag-10 tilt 180 ws 2 00 ws 22 0 ws 23 0 ws 230 ws split b ea d 250 ws 225 ws SMAW 225 ws SMA W 225 ws SMAW 26 0 ws SMAW 260 ws SMAW 26 0 ws SMAW 26 0 ws SMAW 25 0 ws SMAW 25 0 ws SMAW 25 0 ws SMAW 25 0 ws SMAW 250 ws SMAW 23 0 ws SMAW 23 0 ws SMAW 23 0 ws SMAW 23 0 ws SMAW 23 0 ws SMA W 23 0 ws SMAW 23 0 ws SMAW 23 0 ws SMA W 23 0 ws SMA W 23 0 ws SMA W 23 0 ws SMA W 23 0 ws SMAW 23 0 ws SMAW 23 0 ws SMAW 23 0 ws SMA W 23 0 ws SMA W 230 ws SMAW Revi s ion 1 consisted of ed itorial chan ges to co n ec t the thickness of the test co upon , cl arify pol a ri ty for GT AW a nd SMAW, a nd a dd a s t a t ement regarding th e thickness of weld passes. ENCLOSURE 5 CERTIFIED MATERIAL TEST REPORTS FOR WELDING FILLER MATERIAL HEAT NUMBERS 527221, 736908, AND 737880 13 pages follow -*' -. * **WELDSTAR 111111..;..:_

. " . . -~ OLD VALUES *.. NEW IDEAS www.weldstar.com Form QS-17 Rev.R CERT/FICA TE OF COMPLIANCE I CONFORMANCE ISSUED: April 25, 2013 SOLD TO: Xcel Energy Monticello Nuclear Generating

_ Plant . 2807 West County Road 75 Monticello, MN 55362-9637 CUSTOMER PO#: 00046850 Rev. 002 NUCLEAR SHIPPING#: N991450 SHIP TO: SAME DESCRIPTION: ITEM #2: Ordered:800 lbs Shipped:800 lbs Electrodes , 3/32" x 50 lb containers , ESAB, E7018H4R Heat# T123497, Lot# 2C315E01, Control# 000007 \. . ITEM #3: Ordered:300 lbs.* Shipped:300. lbs Spooled wire , . 035" x 30 lb spools, Arcos, ER308/308L Heat# 527221 , Lot# XF9689 The attached CMTR(s), one copy per item , cover the materia l suppl i ed against the above referenced purchase order number. The above material will meet code r equ ir ements of ASME Section II , Part C , and Sectio:, Ill , 2010 Edition , 2011 Addenda , NB2400 for Class 1 material , and i s in compliance with the above referenced purchase order number. We certify that the material supplied has been handled : n compliance with our i dentification and verification program. All vendors on Weldstar's approved vendo rs list have been audited by \r.Jeldstar. Weldstar's Qua l ity Assurance Program Revision R , dated September 10 , 2012 meets the requirements of ASME Section 111, NCA-3800 , 2010 Edition , 2011 Addenda and the applicab l e parts of NQA-1 and 10 CFR Part 50 Appendix B. The recording of false, fictitious, or fraudulent statements O"r enti*ies may be punishable as* a felony under Federal Statute. This mater ial has not come in contact with Mercury while at Weldstar. All items furn ishe d under this Purchase Order/Subcontract are genu ine (I.e., not counterfeit) and match the quality , test reports, markings *arid/or fitness for use require d by the Purchase O rd er/Subcontract. The provisions of NRC*10CFR Part 21 apply to this order. Weldstar Aurora 1750 Mi tchell Road, PO Box 1150 Aurora, I L 60505 Phone 630.859.3100 Fax 630.859.3199 Weldstar Logansport 1000 East Main Street Logansport, IN 46947 Phone 574.722.1177 Fax 574.753.3113 ---------WELDSTAR COMPANYS QUALITY SYSTEM CERTIFICATE (MATERIALS) QSC 229 EXPIRATION DATE JAN. 5, 2015

Weldstar University Park 11 DO Hamilton Avenue Univers.ittfcJkN~

60484 / 7 GO") Phone 1fi~'.5~l\1.llt6-+-1 -~* ..... 0c....-;:-_____ --/_ Fax 1oaE?Jal!!)S 3 Of . , . b --------------***-****

.** ARCOS INDUSTRIES, LLC 394 ARCOS DRIVE MT. CARMEL, PA 17851 . DATE 7/23/2012

,--:~ I =Arcos ASME CERTIFICATE NO: QSC-448 EXPIRATION DATE: 10/23/2014 CERTIFIED MATERIAL TEST REPORT EN 10204 3.l.B \ SOLD TO: Weldstar Company P.O. Box 1150 . Aurora , IL 60507 SHIP TO: Weldstar Company 1750 Mitchell Road . Aurora, IL 60504 ARCOS S.O CUSTOMER ORDER NO. I CONSIGNEE ORDER NO. DATE SHIPPED 127040 906005 I NIA 7/23/2012 ITEM SIZE GRADE LOT NO. -HEAT NO. I QUANTITY .035" X 30# SPL

ARCOS 308/308L . XF9689 -527221 I 1500# .. SPECIFICATION ASME SFA 5.9 CLASS ER308/308L ASME SECTION II , PART C, -ASME B&PVC SECTION Ill, SUBSECTION NB-2400, WELDSTAR COMPANYS 2010 EDITION, UP TO AND INCLUDING 2011 ADDENDA QUALITY SYSTEM CERT I FICA" 10CFR21 & 10CFR50, APPX. B APPLIES. ASME NCA 3800 (MATERIALS) asc 229 I EXPIRATION DATE JAN. 5, 20 (;HEMICAL ANAL vs~ Wire';-, y. \ \ \, *. \ ' C Mn Si s p Cr Ni Mo Cu Fe 0.012 1.8 0.38 0.005. 0.01 20.1 10.6 0.04 0.05 BAL Co V N 0.03 0.05 0.046 CHEMICAL ANAL Y$1S We l d GTAW I C Mn Si s } p Cr Ni . Mo I\ Cu Fe 0.012 1.8 0.38 0.006 0.01 20.1 10.6 0.04 0.04. BAL Co V N 0.03 0.05 0.047 FERRITE -NB-2433.1: WIRE GTAW TENSI_LE GTAW WRC Diagram 10 FN 10 FN As-Welded Schaeffler 9% 8% *
Yield (psi} 53,000 Magne Gage* 10 FN Tensile (psi) 82,000 Elongation(%)

50 Red. of Area (%) 77 Lot Classification -S3 Intensity of Testing -Schedule K OTHER INFORMATION BD Process .. *,**-* . . , -*. . * **--**-.. , ..... *. , . Co try f O . . s ed I . . '. . .. : . *. . . . ' . ,. . ., I un o rrgm: w en .* * .. :;:, .. ,.* ,, .. ,*' .. :. ;' :: , , .. ~.-.... *.{'; Nb +Ta 0.006 Nb+Ta 0.005 Preheat 60°F, Interpass 300°F ;. '*:*' .. Th.is "civifR c:6v'ers XcelEiie'rgy_;-:::t/:f ! Direct Current Straight Polarity (DCEN~ . 'i>cni'qoo46sSt.Rev': ooi; Weld~tar .*t\J Ti 0.002 Ti

0.002 GfAW 100% Argon (:.*: '. Nuclear Shf ppir:ig~ N~9i4s6 ..* :;;.{ , , ,: . ! : .. * ... * . , ;y\:W:?/*

.: :.;,::. :> _*:):\I 1-, .. :s-ts-THIS MATERIAL IS FREE FROM MERCURY, RADIUM, OR ALPHA PARTICLE CONTAMINATION. Quali!}' Systems Manual , Edition 4 , Revision.a , dated 4/2/2012 MATERIAL MADE I N THE USA. Gib Grattl QA Manager E 5 We hereby affirm that the reported results on this certification are correct and accurate. All tests and r~sults and operations performed by Arcos or its subcontractors are in compliance with the applicable material/customer specification. Quality Assurance Depart~1~ N. / ] _ b O 7 Page ~b of . h ..-* WELDSTAR .......... ...........r1 OLD VALUES *** NEW IDEAS www.weldstar.com CERTIFICATE OF COMPLIANCE ISSUED: July 8, 2008 CUSTOMER: CUSTOMER PO#: SHIP TICKET #: DESCRIPTION: NMC I Monticello Nuclear Gen 00023633 N807743-01 ITEM #1: 420 lbs of Spool Wire .035x301b spools, Arcos, ER308/308L Heat# 736908, Lot# XT8882, Control # 8882 The attached CMTR(s), one copy per item , cover the mater i al supplied against the above referenced pu r chase order number. The above material will meet code requirements of ASME Sect i on II , Part C , and Section Ill , 2007 Ed i tion , NB2400 for Class 1 material , and i s in compliance with the above referenced purchase order number. We cert i fy that the material supplied has been handled in compl i ance with our i dent i fication and ver i fication program. A ll vendors on Weldstar's approved vendors list have been aud i ted by Weldstar. Weldstar's Quality Assurance Program Revis i on N, dated November 9 , 2005 meets the requirements of ASME Section Ill , NCA-3800, 1989 and 2007 Edition, and the applicable parts of NQA-1 and 10 CFR Part 50 Appendix B. The provisions of NRC 10CFR Part 21 apply to this order. NAGER R.l.tt.# 08~3 10 _, Page :5 of .... :> ... * -Weldslar Aurora 1750 Mitchell Road , PO Box 1150 Aurora , IL 60505 Phone 630.8 5 9.3 1 00 Fax 630.8 5 9.3199 Weldstar Logansport 1000 East Main Street Logansport , IN 46947 Phone 574.722.1177 Fax 574.753.3113 Weldslar University Park 1100 Hamilton Avenue University Park, IL 60466 Phone 708.534.8561 Far 708.534.7819 ARCOS INDUSTRIES, LLC ONE ARCOS DRIVE Mt. Carmel, PA 17851 This CMTR covers NMC Po # 00023633; Weldstar Nuclear Shipping Ticket# N807743*01 DATE 07/01/08 CERTIFICATION OF TESTS ASME CERTIFICATE QSC-448 EXPIRATION DATE: 10/23/08 SOLD TO WELDSTAR COMPANY P.O. BOX 1150 AURORA , IL 60507 SHIP TO: WELDSTAR COMPANY 1750 MITCHELL ROAD AURORA , IL 60504 ARCOSS.O. CUSTOMER ORDER NO. CONSIGNEE ORDER NO. DATE SHIPPED 100224 904689 C/0 1 NIA 7/1/2008 ITEM SIZE GRADE LOT NO. -HEAT NO. QUANTITY .035" X 30# SPL ARCOS 308/308L XT8882 -736908 SPECIFICATION: ASME SFA 5.9 CLASS ER308/308L ASME SECTION II, PART C 1995 EDITION. ASME B&PVC SECTION Ill, NB2400 1989 EDITION AND NO ADDENDA 10CFR21 & 10CFR50 APPX. B APPLIES CHEMICAL ANALYSIS: C Mn Si s p Cr 0.017 2.0 0.50 0.003 0.02 20.0 0.011 1.9 0.44 0.004 0.02 19.7 Ti Co Cu Fe 0.002 0.04 0.07 BAL 0.002 0.07 0.13 BAL ADDITIONAL TEST RESULTS Ferrite. N82433.1-1: Magna Gage: X-ray: Bends: BFN WRC WIRE, 9FN WRC WELD BFN ASME NCA 3800 N i Mo 10.4 0.09 9.8 0.11 V N 0.12 0.072 0.09 0.072 TENSILE As Welded Yield 57,000esi Tensile 84,000esi Elongation 50% Red.of Area 74% 420# Cb+Ta 0.007 0.007 Heat Troated OTHER INFORMATION: Lot Classification -S3 Preheat 60°F, lnterpa ss 300°F Intensity of Testing -Schedule K GTAW, 100% ARGON, DIRECT CURRENT STRAIGHT POLARITY (DCSP) CONTROL #8882 THIS MATERIAL IS FREE FROM MERCURY. RADIUM OR ALPHA PARTICLE CONTAMINATION. We hereby affirm that the reported results on th i s certificatio n are correct and accurate. All test and results and operations performed by Arcos or its subcontractors are in compl i ance with the appl i cable materiaVcustomer specification. ARCOS W.i.\t# 0 8 -3 1 0 WIRE WELD WIRE WELD ,-/ WELDSTAR COMPANY& QUALITY SYSTEM CERTIFICATE (MATERIALS) OSC 229 EXPIRATION DATE JAN, f, 200I QUALITY ASSURANCE DEP'WTil~-NT ___ J j Gib Grattl, QA Manager t'I B ~H OLD VALUES **. NEW IDEAS www.weldstar.com CERTIFICATE OF COMPLIANCE ISSUED: February 24, 2009 CUSTOMER: CUSTOMER PO#: SHIP TICKET#: DESCRIPTION: Xcel Energy/ Monticello Nuclear 00027173 N833572 ITEM #1: 100 lbs Cutlengths 3/32" X 36" , 10 lb containers , Arcos, ER308/308L Heat #737880 , Lot #CT9023, Control #9023 ITEM #2: 120 lbs Cutlengths 1/8" X 36" , 10 lb containers , ESAB , ER70S-2 Heat#065905 Weldstar Company's Quality System Certificate (Materials) QSC 229 Expiration Date March 21, 2009 The attached CMTR(s), one copy per item , cover the mater i al supplied against the above referenced purchase o r der number. The above ma t er i a l will meet code requirements of ASME Section II , Part C , and Sect i on Ill. 2007 Edition , 2008 Addenda , NB2400 for Class 1 material, and is i n compliance with the above referenced purchase order number. We certify that the material supplied has been handled in compliance with our i dentification and verificat i on program. All vendors on Weldstar's approved vendors list have been aud i ted by Weldstar. Weldstar's Quality Assurance Program Revision N, dated November 9 2005 meets the requirements of ASME Section Ill , NCA-3800 , 2007 Edition , 2008 Addenda and the applicable parts of NQA-1 and 10 CFR Part 50 Appendix B. The prov i s i ons of NRC 1 OCFR Part 21 apply to th i s order. Weldstar Aurora 175 0 M i tchell Road , PO Box 11 50 Auror a , IL 60505 Phone 6 3 0.859.3100 Fax 630.8 5 9.3199 Weldslar Logansport 1000 Eas t Main Stre e t Logansport , IN 4694 7 Phone 5 74.722.1177 Fax 574.7 53.311 3 R.l.N. # 09-0199 fl~ge 3 of_7_ Weldstar University Park 1100 Ham i lton Avenue Un i vers i ty Park , IL 60466 Phone 708.534.8561 Fax 7 08.534.7819

ARCOS INDUSTRIES, LLC ONE ARCOS DRIVE MT. CARMEL, PA 17851 DA T E 1 2/29/08 T hi s CMTR c overs Xc e l PO# 00027173; Weldstar Nucle a r Shippin g T i cket #N8335 72 I f-', I =Arcos ASME CERTIFICATE NO. QSC-448 EXPIRATION DATE 10/23/11 CERTIFICATION OF TESTS SOLD TO: WELDSTAR CO. P.O. BOX 1150 AURORA , IL 60507 ARCOSS.O. CUSTOMER ORDER NO. 103825 904840 ITEM SIZE GRADE 3/32" X 36 ARCOS 308/308L SHIP TO: WELDSTAR CO. 1750 MITCHELL ROAD AURORA, IL 60504 CONSIGNEE ORDER NO. NIA LOT NO. -HEAT NO. CT9023 -737880 DATE SHIPPED 1/22/2009 QUANTllY 1620# SPECIFICATION:

ASME SFA 5.9 CLASS ER 308/308L ASME SECTION II , PART C, ASME B&PVC SECTION Ill; SUBSECTION NB 2400 , 2007 EDITION , UP TO AND INCLUDING 2008 ADDENDA 10CFR21 &10CFR50 APPX 8 APPLIES ASME NCA 3800 CHEMICAL ANALYSIS:

c Mn Si s p Cr 0.017 2.0 0.42 0.003 0.014 20.1 0.002 1.8 0.42 0.002 0.017 20.0 n Co Cu Fe 0.002 0.032 0.07 BAL 0.001 0.044 0.11 BAL ADDITIONAL TEST RESULTS Ferrite-NB2433.1-1: 9FN Wire, 10FN Weld Magna Gage: X-Ray: Bends: OTHER INFORMATION:

9FN Lot Classification -S3 Preheat 60°F , lnterpass 300°F Co11trol# 9023 Ni Mo Cb+Ta 10.4 0.09 0.007 10.0 0.13 0.004 V N 0.10 0.067 0.10 0.066 TENSILE As Welded* Heat Treated Yield 59,000psi Tensile 90 , 000psi Elongation 48% Red.of Area ----Intensity of Testing -Schedule K GTAW (DCEN) 100% Argon MADE IN THE USA THIS MATERIAL IS FREE FROM MERCURY , RADIUM OR ALP.HA PARTICLE CONTAMINATJO WIRE WELD WIRE WELD We hereby affirm that the reported results on this certification are correct and accurate. Al l test and results and operations performed by Arcos or Its subcontractors are Ir, compliance with the applicable materiaVcustomer specification. 09*-0199 Weldstar Company's Quality System Certificate (Materials) QSC 229 Expiration Date March 27, 2009 WH 11iL '-/ ~of 2------'-Llf>-4.1..J.4. 1~~-___;~:n-81:..!!I&!.:::-QUALITY ASS U RANCE DEPARTMENT Gib Gratti, QA Manager t ,.

WELDSTAR ........_ OLD VALUES *** NEW IDEAS www.weldstar.com CERTIFICATE OF COMPLIANCE ISSUED: March 13, 2009 CUSTOMER:

CUSTOMER PO#: SHIP TICKET#: DESCRIPTION: Xcel Energy I Monticello Nuclear 00027410 Rev. 1 N835189 ITEM #1 : 1200 lbs Electrode 1/8", 50 lb containers, ESAB, E7018H4R Heat #31347, Lot #4H829A05, Control #MMM051 ITEM #2: 550 lbs Electrode 5/32", 50 lb containers, ESAB, E7018H4R Heat #52413, Lot #2K808C02 , Control #MMM054 ITEM #3: 50 lbs Electrode 1/8", 50 lb containers , Lincoln , E6010 Lot#842M Item #4: 650 lbs Cutlengths 1/8" X 36", 10 lb conta iners, ER308/303l Heat #737880 , Lot #DT9023, Control #9023 Weldstar Company's Quality System Certificate (Materials) QSC 229 Expiration Date March 27, 2009 The attached CMTR(s), one copy per item, cover the material supplied against the above referenced purchase order number. The above material will meet code requirements of ASME Section 11, Part C, 2007 Edition , 2008 Addenda and Section Ill , 2007 Edition, 2008 Addenda, NB2400 for Class 1 material, and is in compliance with the above referenced purchase order number. We certify that the material supplied has been handled i n compliance w it h our identification and verification program. All vendors on Wetdstar's approved vendors list have been audited by Wetdstar. Weldstar's Quality Assurance Program Revision N , dated November 9 , 2005 meets the requirements of ASME Section Ill , NCA-3800 , 2007 Edition , 2008 Addenda and the applicable parts of NQA-1 and 10 CFR Part 50 Appendix B. rev i s i ons of NRC 10CFR Part 21 apply to this order. R.1.N. # 09-249 Weldslar Aurora 1750 M i tchell Road , PO Box 1150 Aurora , IL 60505 Phone 630.859.3100 Fax 630.859.3199 _ ?)age 3 of 10 Weldslar Logansport 1000 East Ma in Street Logansport, IN 46947 Phone 574.722.1177 Fax 574.753.3113 Weldstar University Par11 1100 Hamilton Avenue University Park, IL 60466 Phone 708.534.8561 Fax 7 08.534.7819 . ARCOS IN , DUSTRIES, LLC .ONE.ARCOS DRIVE ~. -. ' . .. : ; .. -*. .. * * , * : ** ' * .1: *** MT. CARMEL, PA 17851 * : )bi~-CMTR c*overs E xcel P.0#00027410 -~y: I;' Weldstar Nuclear Shipping Ticke1 .. ,: ': , .-. ; , ,_. * #N83518~ . *.*I .'* I f~I,-*1 I =Arcos -:* < .. . : ,~. DATE 01 /28/09 ASME CERTIFICATE NO. QSC-448 EXPIRATION DATE 10/23/11 CERTIFICATION OF TESTS SOLD TO: WELOSTAR CO. P.O. BOX 1150 AURORA , IL 60507 SHIP TO: WELDSTAR CO. 1750 MITCHELL ROAD AURORA, IL 60504 ARCOSS.O. CUSTOMER ORDER NO. CONSIGNEE ORDER NO. DATE SHIPPED 103825 904840 NIA 1/28/2009 ITEM SIZE GRADE LOT NO. -HEAT NO. QUANTITY 1/8" X 36" ARCOS 308/308L DT9023 -737880 1620# SPECIFICATION: ASME SFA 5.9 CLASS ER 308/308L ASME SECTION II, PART C, ASME B&PVC SECTION Ill , SUBSECTION NB 2400, 2007 EDITION, UP TO AND INCLUDING 2008 ADDENDA 10CFR21 &10CFR50 APPX. B APPLIES ASME NCA 3800 CHEMICAL ANALYSIS: C Mn Si s p Cr 0.017 2.0 0.42 0.003 0.014 20.1 0.002 1.8 0.42 0.002 0.017 20.0 Ti Co Cu Fe 0.002 0.032 0.07 BAL 0.001 0.044 0.11 BAL ADDITIONAL TEST RESULTS Ferrite-NB2433.1-1: 9FN Wire, 10FN Weld Magna Gage: X-Ray: Bends: OTHER INFORMATION: 9FN lot Classification -S3 Preheat 60°F, lnterpass 300°F Control# 9023 Ni Mo Cb+Ta 10.4 0.09 0.007 10.0 0.13 0.004 V N 0.10 0.067 0.10 0.066 TENSILE As Welded Heat Treated Yield 59,000psi Tensile 90,000psi Elongation 48% Red.of Area 77% ----Intensity of Testing -Schedule K GTAW (DCEN) 100% Argon MADE IN THE USA THIS MATERIAL IS FREE FROM MERCURY, RADIUM OR ALPHA PARTICLE CONTAMINATION. we hereby affirm that the reported results on this certification are correct and accurate. All test and results and operations performed by Arcos or its subcontractors are in compliance w i th the applicable materiaUcuslomer specification . .... Weldstar Company's Quality System Certificate (Materials) QSC 229 Expiration Date March 27, 2009 QUALITY ASSURANCE DEPART~'ff"T -2 4 9 Gib Gratti, QA Manager

r>age_Jo _oi_Jt)_ WIRE WELD WIRE WELD
WELDSTAR .......__

-"""'1111111 OLD VALIJES ... NEW IDEAS www.wel dst a r.com CERTIFICATE OF COMPLIANCE ISSUED: April 2, 2009 CUSTOMER: Mont i cello Nuclear Generating CUSTOMER PO#: 00027722 Rev. 1 SHIP TICKET#: N837513 DESCRIPTION: ITEM #1: 280 lbs Cutlengths 1/8" x 36" , 1 O lb containers , Arcos , ER308/308L Heat# 737880 , Lot# DT9023, Control# 9023 ITEM #2: 500 lbs Cutlengths 3/32" x 36", 10 lb containers, Arcos , ER308/308L Heat# 73 7 880 , L ot# CT9023, Control# 9023 ITEM #3: 600 lbs E l ectrodes 3/32" , 50 l b containers , ESAB, E7018H4R Heat# 082324 , Lot# 28919C03, Control# MMM06 1 The attached CMTR(s), one c opy per i tem , cover the material supplied against the above referenced purchase order number. The above material will meet code requirements of ASME Section II , Part C, and Section Ill , 2007 Edition , 2008 Addenda , NB2400 fo r Class 1 material , and i s in compliance with the above referenced purchase order number. We certify that the mater i al supplied has been handled i n compliance w i th our i dentification a n d ver i ficat i o n program. All vendors on Weldstar's app r oved vendors list have been audited by Weldstar. Weldstar's Quality Assurance Program Revis i on 0 , dated January 29 , 2009 meets the requirements of ASME Section Ill , NCA-3800 , 2007 Edition , 2008 Addenda and the applicable parts of NQA-1 and 10 CFR Part 50 A ppendix B. provisions of NRC 10C F R Part 21 apply to this order. Weldstar Aurora 17 50 Mitchell R oa d , PO Bo x 1150 Au rora , IL 60 5 0 5 Phone 630.85 9.3100 F ax 63 0.859.3199 R.11,# o 9 -3 8 0 ¥ et & Paqe@star Logansport 1000 Ea s t M a i n Stree t L og a n s port, IN 46 9 4 7 Phone 5 7 4 .7 2 2.1177 Fax 574.7 5 3.3113 -WELDSTAR COMPANY$ QUALITY SYSTEM CERTIFICATE (MATERIALS) QSC 229 EXPIRATION DATE JAN. 5, 2012 Weldstar Univers i ty Park 11 00 Hami l ton A ve n ue Un i ver s i ty P a r k, IL 6 04 66 Phone 7 08.5 3 4.856 1 Fax 7 08.5 34.7819 'ARCOS INDUSTRIES, LLC ONE ARCOS DRIVE MT. CARMEL, PA 17851 DATE 01/28/09 Thi s CMTR covers XCEL PO# 00027722 Rev. I; Weldstar N uclear Shipping Ticket #N837513 /-,. --.,~ ... I =Arcos ASME CERTIFICATE NO. QSC-448 EXPIRATION DATE 10/23/11 CERTIFICATION OF TESTS BEST AVAILABLE COPY SOLO TO: WELDSTAR CO. P.O. BOX 1150 AURORA, IL 60507 SHIP TO: WELDSTAR CO. 1750 MITCHELL ROAD AURORA, I L 60504 ARCOS S.O. CUSTOMER ORDER NO. CONSIGNEE ORDER NO. DATE SHIPPED 103825 904840 NIA 1/28/2009 ITEM SIZE GRADE LOT NO. -HEAT NO. QUANTITY 1/8" X 36" ARCOS 308/308L DT9023 -737880 1620# SPECIFICATION: ASME SFA 5.9 CLASS ER 308/308L ASME SECTION II , PART C, ASME B&PVC SECTION Ill, SUBSECTION NB 2400, 2007 EDITION , UP TO AND INCLUDING 2008 ADDENDA 10CFR21 &10CFR50 APPX. B APPLIES ASME NCA 3800 CHEMICAL ANALYSIS: C Mn Si s p Cr Ni Mo Cb+Ta 0.017 2.0 0.42 0.003 0.014 20.1 10.4 0.09 0.007 0.002 1.8 0.42 0.002 0.017 20.0 10.0 0.13 0.004 Ti Co Cu Fe V N 0.002 0.032 0.07 BAL 0.10 0.067 0.001 0.044 0.11 BAL 0.10 0.066 ADDITIONAL TEST-RESULTS TENSILE As Welded Heat Treated Ferrite-NB243 3.1-1: 9FN Wire, 10FN Weld Magna Gage: ><-Ray: 3ends: )THER INFORMATION: 9FN Lot Classification -S3 Preheat 60°F, lnterpass 300°F Control# 9023 Yield Tensile 59,000psi 90 , 000psi Elongation 48% Red.of Area 77% Intensity of Testing -Schedule K GTAW (DCEN) 100% Argon MADE IN THE USA THIS MATERIAL IS FREE FROM MERCURY, RADIUM OR ALPHA PARTICLE CONTAMINATION. 'e hereby affirm that the reported results on this certification are correct and accurate. All test and results and operations irformed by Arcos or its subcontractors are in compliance w i th the applicable material/customer specificat i on. WIRE WELD WIRE WELD WELDSTAR COMPANYS QUALITY SYSTEM CERTIFICATE (MATERIALS) asc 229 EXPIRATION DATE JAN. s, 20 12 ~~lli......._..,...Jt _______ ......_,,gJUIL# QUALITY ASSURANCE DEPARTMENT Gib Gratti, QA Manager 'J 9 = 3 8 0 hll-5 et .... 9 ......... ARCOS INDUSTRIES, LLC ONE ARCOS DRIVE MT. CARMEL, PA 17851 DATE 12/29/08 Amended This CMTR covers XCEL PO# 00027722 Rev. l; Weldstar Nuclear Shipping Ticket #N837513 }--':~ IWEArcos ASME CERTIFICATE NO. QSG-448 EXPIRATION DATE 10/23/11 SOLD TO: WELDSTAR CO. P.O. BOX 1150 AURORA , IL 60507 CERTIFICATION OF TESTS SHIP TO: WELDSTAR CO. 1750 MITCHELL ROAD AURORA. IL 60504 ARCOSS.O. CUSTOMER ORDER *No. CONSIGNEE ORDER NO. DATE SHIPPED 103825 904840 C/0 2 NIA 1/22/2009 ITEM SIZE GRADE LOT NO. -HEAT NO. QUANTITY 3/32" X 36" ARCOS 308/308L CT9023 -737880 1620# SPECIFICATION: ASME SFA 5.9 CLASS ER 308/308L ASME SECTION II , PART C, ASME B&PVC SECTION Ill, SUBSECTION NB 2400 , 2007 EDITION , UP TO AND INCLUDING 2008 ADDENDA 10CFR21 &10CFR50 APPX B APPLIES ASME NCA 3800 CHEMICAL ANALYSIS: C Mn Si s p Cr Ni Mo Cb+Ta 0.0.1 7 2.0 0.42 0.003 0.014 20.1 10.4 0.09 0.007 0.002 1.8 0.42 0.002 0.017 20.0 10.0 0.13 0.004 Ti Co Cu Fe V N 0.002 0.032 0.07 BAL 0.10 0.067 0.001 0.044 0.11 BAL 0.10 0.066 ADDITIONAL TEST RESULTS TENSILE As Welded Heat Treated 9FN Wire,Sch. 9% Wire, Ferrite -NB2433.1-1: __ 1_0_FN_W_e_ld __ , _sc_h_.1_1_%_W_e_ld_ Magna Gage: X-Ray: Bends: OTHER INFORMATION: 9FN Lot Classtfication -S3 Preheat 60°F, lnterpass 300°F Control# 9023 Yield 59 , 000psi Tensile 90,000psi Elongat i on 48% Red.of Area . 77% Intensity of Testing -Schedule K GTAW(DCEN) 100% Argon MADE IN THE USA THIS MATERIAL IS FREE FROM MERCURY, RADIUM OR ALPHA PARTICLE CONTAMINATION. We hereby affirm that the reported results on th i s certlffcation are correct and accurate. All test and results and operations performed by Arcos or its subcontractors are In compliance with the applicable material/customer specification. £:n~~ QUALllY ASSURANCE0'.ARTMENT WIRE WELD WIRE WELD WELDSTAR COMPANYS QUALITY SYSTEM CERTIFICATE {MATERIALS) asc 229 EXPIRATION DATE JAN. 5, 2012 Len Slovinsky QA Specialist 0 9 ... 3 8 O ----If. cY

WELDSTAR ........__
> OLD VALUES ..* NEW IDEAS www.weldsta r.com CERTIFICATE OF COMPLIANCE ISSUED: April 22, 2009 CUSTOMER: CUSTOMER PO#: SHIP TICKET#: DESCRIPTION

XCEL Energy/Monticello Nuclear 00027722 Rev. 1 N837513-01 ITEM #1: 220 lbs Cutlengths 1/8" x 36", 10 lb conta i ners , Arcos , ER308/308L Heat# 737880 , Lot# DT9023 , Contro l# DT9023 *This order i s comple t e The attached CMTR(s), one copy per item , cover the material suppl i ed against the above referenced purchase o r der number. The above material will meet code requ i rements of ASME Section 11 , Part C , and Section Ill , 2007 Edition, 2008 Addenda, NB2400 for Class 1 material , and is in comp l iance with the above referenced purchase order number. We certify that the materia l supplied has been hand l ed i n compliance with our i dentification and verification program. All vendo r s on Weldsta r's approved vendors list have been audited by Weldstar. Weldstar's Quality Assurance Program Revis i on 0 , dated January 29 , 2009 meets the requirements of ASME Sect i on 111, NCA-3800, 2007 Edition , 2008 Addenda and the applicable parts of NQA-1 and 10 CFR Part 50 Appendix B. The prov i sions of NRC 1 OCFR Part 21 app l y to this o r de r. Weldstar Aurora 17 50 Mitch e ll R oad , P O B ox 11 50 Auro ra , IL 6 0 5 0 5 P h one 630.8 5 9.3 1 oo Fa x 63 0.85 9.3199 ~I# 09'"" 5'3 t*819-S Gf--lo---Weldstar Logansport 1000 East M ai n St ree t Lo g a n s p o rt , I N 46 9 47 Phone 5 7 4. 722.1177 Fa x 5 7 4.753.3113 WELDSTAR COMPANY$ QUALITY SYSTEM CERTIFICATE (MATERIALS)

QSC 229 EXPIRATION PATl5 JAN, O, ~Ol2 Weldstar University Pa r k 1 100 Hamilton A v en ue Universi ty P a rk , I L 60 466 Phone 70 8.53 4 .8561 Fax 7 0 8.5 3 4.7 8 19 ARCOS INDUSTRIES, LLC ONE ARCOS DRIVE MT. CARMEL, PA 17851 DA TE 04/15/09 .~:. ~. , .. :..* . . . . . . . .* . . . \'.This CMTR covers Xcef PQ# ; '..00027722 R~v i 1;*: wek!star N~cl.ear :_.. Shipping Tick~t ~8375.1)-:0l . *-:::*:: *** f

_. * * * ** /-_-I,:_ , I' I =Arcos ASME CERT I FICATE NO. QSC-448 EXPIRATION DATE 10/23/11 CERTIFICATION OF TESTS SOLD TO: SHIP TO: WELDSTAR CO. WELDSTAR CO. P.O. BOX 1150 AURORA, IL 60507 1750 MITCHELL ROAD AURORA , IL 60504 ARCOS S.O. CUSTOMER ORDER NO. CONSIGNEE ORDER NO. DATE SHIPPED 105605 904931 NIA 4/15/2009 ITEM SIZE GRADE LOT NO. -HEAT NO. QUANTITY 1/8" X 36" ARCOS 308/308L DT9023 -737880 750# SPECIFICATION:

ASME SFA 5.9 CLASS ER 308/308L ASME SECTION II, PART C, ASME B&PVC SECTION 111 , SUBSECTION NB 2400 2007 EDITION UP TO AND INCLUDING 2008 ADDENDA 10CFR21 &10CFR50 APPX. B APPLIES ASME NCA 3800 CHEMICAL ANALYSIS: C Mn S i s p Cr Ni Mo Cb+Ta 0.017 2.0 0.4 2 0.003 0.014 20.1 10.4 0.09 0.007 0.002 1.8 0.42 0.002 0.017 20.0 10.0 0.13 0.004 T i Co Cu Fe V N Total Others 0.002 0.032 0.07 BAL 0.10 0.067 <0.50 0.001 0.044 0.11 BAL 0.10 0.066 <0.50 ADDITIONAL TEST RES UL TS TENSILE As Welded Heat Treated Ferrite-NB2433.1-1: 9FN Wire, 10FN Weld Yield 59,000esi Magna Gage: 9FN Tensile 90 , 000esi X-Ray: Elongation 48% Bends: Red.of Area 77% Hardness: OTHER INFORMATION: Lot Classification -S3 Intensity of Testing -Schedule K MADE IN THE USA PREHEAT 60°F, INTERPASS 300°F GTAW, 100% ARGON , DIRECT CURRENT STRAIGHT POLARITY (DCSP) CONTROL# DT9023 WIRE WELD WIRE WELD THIS MATERIAL IS FREE FROM MERCURY , RADIUM OR ALPHA PARTICLE CONTAMINATION. ft ii # We hereby affirm that the reported results on this certification are correct and accurate. All test and results and operations performed by Arcos or its subcontractors are in compliance with the applicable material/customer specification. Q 9 = 5 1 3 WELDSTAR COMPANYS QUALITY SYSTEM CERTIFICATE (MATERIALS) QSC 229 EXPIRATION DAT~ JAN. 5, 2012 -=:-~~~~~,~* (~ o~~ea~<<e ....... "---~i--G?~ QUALITY ASSURANUBWRTMENT & Len Slovinsky QA Specialist ENCL0SURE12 TN AMERICAS LLC AFFIDAVIT Affidavit# Enclosure# -Document Number & Name E-51228 Enclosure 11 -ANSYS Files Used to Analyze the Closure Welds on DSCs 11-15 1 page follows TN Americas LLC State of Maryland Co unt y of Howard ) ) SS. ) AFFIDAVIT PURSUANT TO 10 CFR 2.390 Enclosure 1 to E-51228 I, Jeff Isakson , depose and say that 1 am a Vice President of TN Amer ica s LLC, duly a uthori zed to exec ut e this affidavit, and have reviewed or caused to have reviewed the inform ation that i s identified as proprietary a nd referenced in the paragraph immediately below. I am s ubmi tting this affidavit in conformance with the provisions of 10 CFR 2.390 of the Commission's regulations for withholding this information. T he information for whic h proprietary treatment is sought meets the provisions of paragraph (a) (4) of Sect ion 2.390 of t h e Com mi ssion's regulations and is li sted below:

Comp ut er files assoc iat ed with calculations 11042-0207 Rev. 1, 110 42-0208 Rev. 0, and 11042-0209 Rev. 0 I h ave personal knowledge of the criteria and procedures utili zed by TN Americas LLC in designating information as a trade secret , privileged or as confide nti a l commerc i a l or financial information.

Pursuant to the provisions of paragraph (b) (4) of Section 2.390 of the Commission's regulations , the fol lo wi n g i s furnished for consideration by the Commission in determining whet h er the information sought to be wit hheld from public disclosure , included in the above referenced document , shou ld be withhe ld. 1) The information soug ht to b e withheld from public disclosure involv es com put e r files related to calculations associated wit h the structura l a n alysis of 6IBTH Dry S hi elded Can i ster (DSC) in the Standardized NUHOMS System, which are owned and have been held in confidence by TN Americas LLC. 2) T h e information i s of a type customarily h e ld in confidence by TN Americas LLC, and not customarily disclosed to the public. TN Americas LLC has a rationa l basis for determining the types of information customarily held in confidence by it. 3) Public disclosure of the information is likely to cause su b stantial harm to the compet itiv e position of TN Americas LLC, because t he information is related to the d esig n and a nal ys i s of the dry spent fuel storage system , the a pplic ation of which provides a competit iv e economic advantage. T he availability of such inform ation to competitors would enable them to modify their product to b etter compete with TN Ame rica s LLC , take marketing or other actions to improv e their product's position , or impair the position of TN Americas LLC's product , and avoid the development of similar data and analyses in support of their pro cesses , methods , or apparatus. Further the deponent sayeth not. Jeff I sakson Vice President, TN Americas LLC Subscribed and sworn before me this 23th day of March, 2018. M

Com m ission Expires / D I Ju_ I _tj__ RONDA JONES .~OTARY PUBLIC STATE OF MARYLAND My COIMlission Expres October 16, 2019 Page I of 1 .,

ENCLOSURE10 WELDING DATA SHEETS AND INSPECTION RECORDS FOR THE CLOSURE WELDS ON DSCS 11-16 60 pages follow

*
12751 MNGP-OPS-01, Rev 0, Attachment 9.3 Page 1 of6 Weld Data Sheet Quality Level 12 I DSC Serial No.: MNP-61BTH-1-B-2-011 I Welder Qualification Ver.ified:

Const/Design Code I ASME Ill Sub NB I WPS/Rev: SS-8-M-TN Rev _il)_ & SS-8-A-TN Rev B I WPS Verified: Backing Ring: j NIA ,. Prehe~t Minimum: I 60 F I lnterpass Maximum: I 350 F I Drawing/Revision: I NUH61BTH-4008 Rev.I ~"1'. *~ ... ;-... : ":i.t> .. **r*. ~. .t: -,~-',. J.-.. :!"c., -;-.:.-<-, .. ~i ).-~?f -1~ !f.::;-.. i!'i.::_~-.ttf:*:

??I ,. .:~ .. ,r-.. -* .. *.:. **T 02!,, ;; .... . ,,. . ... INSPECTION REQUCREMENTS Attribute Weld# I Weld# I' Kevwav Weld #2 Weld #3 Weld #4 Weld #5 Hydrogen Check Required Required Not Required Not Required Not Requ i red Not Required Fit Up Inspection Required Required Required Required I R eq uired Required Preheat Verified 9</ e, by IRJS q30 by Ft! iOO by H /OD by vi/ ~() by *Iv I S'C> by Pl? r 0.060 inch and not to 0.060 inch and not to Maximum Reinforcement 0.250 inch 0.060 i nch 0.060 inch 0.060 inch exceed the top of the exceed the top of the shell course. shell course. Preheat/Inter-pass Temp (See WPS) (See WPS) (See WPS) (See WPS) (See WPS) (Sec WPS) lnterpass Verified q'{ by rs C,'1 by '[ '> 107° by f/3 /07° by PB _9ft by efJ 1s<.0 by f'S Interpass Verified by by by by I 70" by ei) by lnterpass Verified by by by by t..22:=." by QR by VT Fit up Required Required Required Required Required Required Initiate Attachment 9.3 Required Required Required Required Required Required Initiate Attachment 9.4 Not Required Not Required Not Required Not Required Required Not Required Tack VT Only Required Required Required Required Required Required Root VT /PT Required Required Required Required Required Required Filler Pass VT/PT NIA NIA NIA NIA Required NIA At Fluslt: Complete Not Requ i red Not Required Not Required ' Attachment 9.4 Not Required Requir e d Not Required Welding Supervisor sign Required Required Required Required Required Required off, prior to NDE Final VT /PT Required Required Required Required Required Required Helium Leak Test Required Required Required Required Not Required Not Required Welder ID BM-!,I /f#._ .. ) BM-JB I II BM-J l/i2 BM-J/ /J f( BM-lJ/J '(. ?,/ BM-}SI Welder ID BM-/8 . BM-~, / 'i BM-BM-BM-111111,, /ss BM-Filler Metal Type ER308 ER108 ER308 ER308 ER308 ,t ER308 Filler Metal Size (See WPS) (See WPS) . (See WPS) (See WPS) (See WPS) 18':z (See WPS) Trace No (Heat/Lot)

,,.. .... --.... ,b,~ -f"'?,\' 737880/CT or DT9023 737880/CT or DT9023 ~i!~i!i!ft*F9689 r-~ 737880/CT or DT9023 -.r... ,,w,i,.,,1 . ., ... -'---~_Jo,J. .., ... --* .... J'-'"'-'.I.Jl 7,r.,o1/yr '"t. , ~c.,csJ tn1Je8L 7!,1::/i cff> hr BZ8 2.

12751-MNGP-OPS-01, Rev 0, Attachment 9.3 Page 2 of6 VT/PT EXAMINATION Customer/Project Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE Examination Date: 0

_____ _ Direct Visual: 12751-MNGP-QP -9.2 01 Rev._fi!j__ Exam Surface: Inner Lid Components DSC Number: MNP-61BTH-1-B-2-011 ILLUMINATION Light Meter Number: "00 Z~D 2 Date Calibrated: / 0
IS:-J 2 Calibration Due Date: /0 -I S:: -/ Y Weld No Weld I Inner Top Cover To Shell: Fit up & Tack Weld Weld Note NIA Gouge NIA Foot Candles 135 Dye Penetrant:
12751-MNGP -QP-9.202 Rev. j_ Drawing No ,: NUH61 BTH-4008 Rev. I COMPONENT TEMPERATURE Device Number: Coro 2B 'i. 5 Z Date Calibrated
ID-QS--12 Calibration Due Date: / 0 0 5""-L 'i. VT Acceptor Reject Examiner Initials Date Foot Candles NIA PENETRANT MATERIAL Brand: Penetrant:
Remover: Developer: Surface. Temperature NIA Sherwin K017 Batch: K019 Batch: D350 Batch: PT Accept or Reject NIA 315'"-Bs4 3 f9-A s:<o 3\1-811 Examiner Date NIA NIA Weld I Keyway er Top Cover t---4-~1-----+--'=---~~......,._.__-l-'"""--'-=--t---p,,,e;..L.3<""-'""'Y--'-""Lll£-~£.>,,£--.1._--+...._.,.....,,,,""'-,__t-L=-M-\,{....,__~e....+_........__,_,,!e:....I NIA 1<co To Shell: Lid/Shell Root Weld 4 NIA '~ NIA 7.3c Weld 1 Keyway Inner Top Cover 1---4---11-----+--'--=---+-i.........,""""'"'___,__...._..__'----+--'-~__..._._.-....., _____ "----t...,......-..,........_.,.._+--'-_...,=-----.....--=--~..._. NIA To Shell Lid/Shell Final Weld 4 EXAMINER: Loct!f-M Yeaks Print Name 7:So EXAMfNER: fV\ 'cl'(ev w. µ;vet{ Prirtt Name LEVEL: JI_ 09-1)£-/3 Date
cq-6r;*-a Date LEVEL: JI. Signature
,~* Signature Page 21 of29
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12751-MNGP-OPS-Ol, Rev 0, Attachment 9.3 Page 3 of 6 VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE E x amination Date: OCf-o,-13 Work Order Number: 464956-'2..0 ~Dir e ct Vis u al: 1 2 75 1-MNG P-QP-9.20 1 Rev.~ Exam Surface: Ke~a)'. Com~onents DSC Number: MNP-61 BTH-1-8-2-011 ~ye Pe netran t: 1 2751-MNGP -QP-9.2 0 2 Rev._l_ Drawin g No: NUH61 BTH-4008 Rev. I ILLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: (ae;o 2'50 {g 2. Device Number: (aeazg~ 32 Bra n d: Sherwin Date Calibrated
lO-l~-12 Date Cal i brated: LQ-oS'-12 Penetran t: KOi? Batch: 21S:-B~L/ Calibration Due Date: /Q-/ S:-/'-/ LD-. o S'-I 'I . A'S(:, Calibration Due Date: Remover: K019 Batch: 319-Develope r: D350 Batch: 311-B, I VT PT Weld No Weld Gauge Foot Accept or Examiner Date Foot Surface Acceptor Examiner Date Note Candles Reject Initials Candles Temperature Reject Init i als Wcld2 Siphon Port: 5 NIA NIA N I A N I A NIA N I A Fit up & Tack 1fo5 Weld Aa:e.n+ LM"f C'Jq-6,-13
< Weld2 Siphon Port: 5 NI A Root Weld 1bS" AC[Ri)+ LN t.f :-Y/,61,,,3 l<o~ l4q°F ArCPo+ ( fVt '1 ')'/-r,7~/3 I Weld 2 Siphon Port: 5 N/A Final Weld l<ao A<ze()~ lfvf. \{ O'i-01-13 18(') \ L\ (o o{= ~ol l c9--01-,3 LM I..( ~-u_b. . EXAMINER: La.c:a, M Yt>a#5 LEV EL: :JL tJ9-o 1 -L 3 Print Name ........ I (-S i gnature Date I : EXAMINER: LEVEL: --., : Prin t Name ' ' S i gnature Date Page 22 of29

I

12751-MNGP-OPS-01, Rev 0, Attachment 9.3 Page 4 of 6 VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE Examination Date: 09.-C) I -( 3 Work Order Number: 464956 .. lo 112(oirect Visual: 12751-MNGP-QP-9 .201 Rev.~ Exam Surface: Ke~a}'. Comgonents DSC Number: MNP-61 BTH-1-8-2-011 -.. ifoye Penetrant: 12751-MNGP -QP-9.202 Rev._L Drawing No: N!.!H61 BTH-4008 Rev. I ILLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: <ooozso~z Device Number: ~QO 28~32 Brand: Sherwin Date Calibrated
L0-1s-1 2 Date Calibrated

1..0-os-, 2. Penetrant:
K017 Batch: 3.J~ -B5"2f Calibration Due Date: LD-L5-/ 'I Calibration Due Date: LO-os--. I "I Remover: K019 Batch: 3lj-AS-6 l Developer: 0350 Batch: 3ll -/37 L ., VT PT Weld No Weld Gauge Foot Acceptor Examiner Date Foot Surface Accept or Examiner Date Note Candles Reject Initials Candles Temperature Reject Initials Weld3 Vent Port: 5 NIA NIA NIA NIA NIA NIA Fit up & Tock Weld th5 frfpf)./,- Lf'll l/ lo9,c7-/3 I Weld3 Vent Port: 5 NIA Root Weld 780 /J~**Af 786 '/t/8°F Accep.}-i\q-0,-13 If&.,-., I :l'I\ 1./ f-li..() 1
13 LfVJ 'I WeldJ Vent Port: 5 NIA Final Weld ,eo At.eept l fVI l/ o '1*01-13 ,88 11.jb op-AU,fpf' LMI./ 0 'j--<J 7-13 ¢!.,~~ I EXAMINER:
Lacq. M ~o&s LEVEL: J;/;-()9-tJ?-13 Pr i nt N'arne Date EXAMINER: LEVEL: *, -Print Name Signature Date Page 23 of29
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12751-MNGP-OPS-01, Rev O Attachment 9.3Page 5 of6 VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE Examination Date: t'!)~-07-L3. Work Order Number: 464956-1.6 er Direct Visual: 12751-MNGP-QP-9 .201 Rev.__JJl!__ Exam Surface: Outer Lid ComQonents DSC Number: MNP-61 BTH-1-B-2-011 &' Dye Penetrant 12751-MNGP -QP-9.202 Rev._J_ Drawing No: NUH61BTH-4Q08 Rev.I ILLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Num~er: SO tt 62 Device Number: t20D~~H.3~ Brand: Sherwin Date Calibrated: l tJ .. r .!5 -L.:;. Date Calibrated: Lb-o~-l3. Penetrant: K017 Batch: :~{.5, -g ~ff Calibration Due Date: tD-£S-lff-Calibration Due Date: l0-05 -, Remover: K019 Batch: 3(q -ff,!!:& Developer: 0350 Batch: 3"tl -i!, 7/_ VT PT Weld No Weld Gauge Foot Accept or Examiner Date Foot Surface. Accept or Examiner Date Note Candles Reject Initials Candles Temperature Reject Weld4 Outer Top Cover 6 NIA 7tl/ NIA N/A NIA NIA N/A To Shell: Fit up A.ccetJ1 n!>w "-.., Dq .. 07-/j &Tack Weld Wrld4 Outer Top Cover 6 NIA 78L( <?[7t: To Shell: Rool ftcce-/>1 {1l1J.J l 09-07-t* 781{ ~c..ee,r llAlvlv 09'-tl '7A Weld Weld4 Outer Top Cover To Shell: 6 NIA 7~J{ -/(o8~ Intermediate f\CCefJ "11. (JJt., rR..O?-J~ 784 ft.cc.e}'r N}ti.lJ... e:ff -(SJ-l? Weld .., .... QQ Weld4 ~25131 Outer Top Cover 6 P.IM To Shell: Final 10-cR-I'/ 1~8 Pcc£P, 7"8 Z01°F IActrPT Weld (ft. II / 0 I<. Lfv\ '1 t>J-0e-,~ I M.1./ Cfl-~~13 EXAMINER: lt\ic/5.e~ t>J. l6Jv e, I LEVEL:~ ~Af oC}-o?-t3 Pri tName . ar;-~ Date EXAMINER: IAm/-Nt ~a:le.s. LEVEL: :?I:.. (')9_-()ff-I 3 . Print Name ~gnature Date Page 24 of 29. / .......
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12751-MNGP-OPS-01, Rev 0, Attachment 9.3 Page 6 of 6 VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE Examination Date: 09 -(""}8-l 3 Work Order Number: 464956-20 [:st Direct Visual: 12751-MNGP-QP-9 .201 Rev. Exam Surface: Outer Lid Com~onents DSC Number: MNP-61 BTH-1-B-2-011 [Q'Dye Penetrant: 12751-MNGP-QP-9 .202 Rev._L Drawing No: NUH61 BTH-4008 Rev , I ILLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: looo 2 5" 0 &, "2.. Device Number: lo6o z~~'32 Brand: Sherwin Date Calibrated: 10-15-(2. Date Calibrated: 10-os--r2. Penetrant: K017 Batch: ~l~*BS"l/ Calibration Due Date: I0-15-ll/ Calibration Due Date: 10-os:-Ill Remover: K019 Batch: 3l'i-A5io Developer: D350 Batch: 3l l-~7l VT PT Weld No Weld Gauge Foot Acceptor Examiner Date Foot Surface. Accept or Examiner Date Note Candles Reject Initials Candles Temperature Reject Weld STest Plug: 6 NIA NIA NIA NIA NIA NIA Install Plug llf?3 Aet:.EPT (Jvt l( 1-J'ivfj-13 Weld STest Plug: 6 NIA 183 7(}3 2f)9°F Root Weld IArLFPT I M Lf f'1J ,oB.{_3 1Aa£Pr lM V ()C/-oS~l 3 Weld 5Test Plug: 6 NIA t~3 A(X£pr Final Weld ,fa~ ~T l"'1\,f oq,0013 23S°F (Jhl.( o~-oB-13 EXAMINER: iaq /Vt ~les LEVEL: -zt:_ !L~t4-h {)_ 2-08-13 . Print Name -/ ~ignature Date EXAMINER: LEVEL: -Print Name Signature Date Page 25 of29 12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding -61BT/BTH NUHOMS Canisters ATTACHMENT 9.4: Fit up/ High-Low/ Depth Record DSC Serial Number MNP-61BTH-t -B-2-0l 1 4 lil)Out punch marks are ID be made as refererioes !01 011going depth me~rements. Thejiaie ID be located approx 90 degrees apart.
Reco r d the Measuring Equipment used: . ,, $.dal d 120022 &2 , ltJ,41.JJ HPS -B C.. Col,O,,, ~Jc., 10/04/'2.f>l&I De th Measurements for Weld Weld #4 Initial Depth Root Layer Jntennediate Layer Final Crown -o. 022. ... 0. 03f -o. O'i'/ NOTE: "NIA all of the sections that do not apply. Page26 of29 e

12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding -61BT/BTH NUHOMS Canisters ATTACHMENT 9.5 Page 1 of 3 Field Comment and/or Repair Log WELD REPAIR LOG Additional sheets ma be attached if necessa DSC No Weld No. Welder ID WPS Weld Filler Metal Weld Repair Details and Sketch DSC No Weld Repair Details and Sketch DSC No Weld No Weld Repair Details and Sketch Welder ID Welder ID Page 27 of29 WPS Weld Filler Metal Lt'\'\ o G\, oS, 13 )JO R6?A~~b Weld Filler Metal 12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding-61BT/BTB NUHOMS Canisters ATTACHMENT 9.5 Page 2 of 3 Field Comment and/or Repair Log WELD INFORMATION INSPECTION REQUIREMENTS Quality\.
Const/Design Code Repair No. Repair No. Repair No. ASME III Sub NB Attribute Drawing/Rev~~ Preheat Minimum Base Material 1 NUH61 BTH-40 Rev. I 60 F Specification WPS/Rev \ lnterpass Maximum Base Material 1 350 F Traceability Backing Ring \ Purge Base Material 2 NIA Specification WPS Verified:: \ Base Material 2 Traceability Welder Qualification Verified\ Hydrogen Check NOTES: Fit Up Inspection Nominal 'Plate Thickness Effective Throat Maximum r,C\.-oi,,, Reinforcement \ Repair# \ Preheat/lnterpass '1-(" -\ Noi~~) r-.. Temperature ~ot Gap Limit " Pur~ (\ Tack V\_Only Repair# Root VT/~ Final VT/ PT'\ Helium Leak Test\ after PT \ Welder ID '\ Repair# '\ -Welder ID Filler Metal Type \ Filler Metal Size \~ Trace No. '\ (Heat/Lot) e Page28 ~f29
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12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding-61BT/BTH NUHOMS Canisters ATTACHMENT 9.5: Field Comment and/or Repair Log age 0 P 3 f3 . "' VT/PT EXAMINATION REPORT Customer/Project:
Excel/Mon~o--12751 EXAMINATION METHOD AND PROCEDURE Examination Date: Work Order Number: 464956 " D Direct Visual; 12751-MNGP-QP-9.201 Rev. __ Exam Surface: DSC Number: MNP-61BTH-1-B-2-011 " 0 Dye Penetrantl2751-MNGP-QP-9.202 Rev. --Drawing No: NUH6 I BTH-4008 Rev. I ' ILLUMINATION C PONENTTEMPERATURE PENETRANT MATERJAL Light Meter Number: Device mber: Brand: Sherwin Date Calibrated: Date Calibra Penetrant: K017 Batch: Calibration Due Date: Calibration Due : -A; Remover: K019 Batch: Developer: D350 Batch: VT "' PT Weld No Weld Gauge Foot Accept or Examiner Dat~ Foot Surface. Accept or Examiner Date Note Candles Reject Initials '-Candles Temperature Reject l.ftt L/ 09-08-13 I~ No RE PRJRS "" "' EXAMINER: LEVEL: --Print Name Signature ) Date EXAMINER: LEVEL: --Print Name I Signature Date ' Page 29 of29
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12751 MNGP-OPS-01, Rev 0, Attachment 9.3 Page J of 6 Weld Data Sheet Quality Level 1 2 I DSC Serial No.: MNP-61BTH-1-B-2
-012 I Welder Qualification Verified: /ll. -/}. L Const/Design Code I ASME IIJ Sub NB I WPS/Rev: SS-8-M-TN Rev Lil & SS-8-A-TN Rev 3 1 WPS Verified: )'l'l ,R. Backing Ring: I NIA I Preheat Minimum: I ~~*::.t*-~ ~: .:: .J~~::_..i~i1~i*~ ~~~~~--~~.': C) Attribute Hydrogen Check Fit Up lnspection Preheat Verified Maximum Reinforcement
Preheat/Inter
-pass Temp lnterpass Verified lnterpass Verified Jnterpass Verified VT Fit up Initiate Attachment 9.3 Initiate Attachment 9.4 Tack VT Only Root VT /PT
Filler Pass VT/PT At Fluslt: Complete Attachment 9.4 Welding Supervisor sign off, prior to NDE Final YT /PT Helium Leak Test Welder JD Welder ID Filler Metal °Type Filler Metal Size Trace No {Heat/Lot)
Weld# I Required Required q 7 ' F . by ,R t2 0.2 50 i nch (See WPS) //0.F by e.fJ /-? 1)015 by JZR -by Required Required Not Required Required Required N IA Not Required Required Required Required BM-3/ BM-If . ER308 (See WPS) 736908/ XT8882 -~, £t ,~ .. , <.Tct6-z. !/7 31,eo OT,otJ/? ntB"o 60 F I lnterpass Maximum: 1350 F I Drawing/Revision: I NUH61 BTH-4008 Rev. I '1 .,._*,.,, .-.. {' ,; u:i,ii :f!. "'~ ~~,:-;**,,. i~,~ . : 'li:;.~ .. ;:;. ~-... ,. :.11,,-*:':,-::*,-.,.**"':!-*. .~..:.-~,2-t i'~,;;;,:-i.;.:rri , .. INSPECTION REQULREMENTS Weld# I Keyway Weld#2 Weld #3 Weld#4 Weld #5 Required Not Required Not Required Not Required Not Required Required Required Required Required Required Cf I OF by re; /ti.$;) by tB /(JR by tD 9A by !~L ,,oo by i'3 -0.060 inch and not to 0.060 inch and not to 0.060 inch 0.060 inch 0.060 inch exceed the top of the exceed the top of the shell course. shell course. (See WPS) (See WPS) (See WPS) (See WPS) (See WPS) /to' F by ~5 /'-/0 by /JE J'fO by (8-11 I l ,o by C),/J I 17° by PB /?L>. f, by ,,-_s; by by I 11" by P.R J3s° by PB by Si? by by ( '(90 by PJ3 by Requ ired Requ i red Required Required Required !lequired Requ ired Required Required Required Not Required Not Required Not Required Required Not Required Required Required Required Required Required Required Required Required Required Required N IA NIA NIA Required NIA Not Required Not Required Not Required Required Not Required Required Required Required Required Required Required Required Required Required Required Required Required Required Not Required Not Required BM-'!,/ BM-J/ BM-3/ BM-3/ BM-IS BM-// BM-II BM-// BM-/!; BM-ER308 ER308 ER308 ER308 ER308 (See WPS) (See WPS) (See WPS) {See WPS) (See WPS) 736908/ XT8882 737880/CT or DT9023 737880/CT or DT9023 736908/ XT88.82 737880/CI' or DT9023 , T~1{7~1180 ~To"l'L~/137~ Pr'1 6'l~/737ftfj Page 20 of29 C.TCl'j'l.} 737Pfo ( G'f'O ,z!> /7~"7880
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12751-MNGP-OPS-01, Rev 0, Attachment 9.3 Page 2 of6 VT/PT EXAMINATION Customer/Project:
Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE Examination Date: cEt-£3-t_I_ Work Order Number: 464956 -21 B'Oirect Visual: 12751-MNGP -QP-9.201 Rev. --Exam Surface: Inner Lid Com12onents DSC Number: MNP-61 BTH-1-8-2-012 0°"Dye Penetrant: 12751-MNGP -QP-9.202 Rev. --Drawing No: NUH6 I BTH-4008 Rev. I ILLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: tore r}. so h Device Number: J4 :s '). m. w l.., Brand: Sherwin ~00~ J.Jc9 .;io2-"/-IIJ-{3 er; q.7n, Date Calibrated: /_D -{_/I._ -l;;). Date Calibrated: LO -1.S-/.;J, Penetr~nt: K017 Batch: -tr~;ro-;) .3, _ .* !"I.. -/ ..,, Calibration Due Date: /0-1..5 -It(. Calibration Due Date: /e.-15-li.j Remover: K019 Batch: ~:: ": II 31, ;tSC-., ... JI/*/~ Developer: D350 Batch: t!'. eo, -~ 3/1*"'1' -VT PT Weld No Weld Gauge Foot Accept or Examiner Date Foot Surface. Accept or Examiner Date Note Candles Reject Initials Candles Temperature Reject Weld 1 Inner Top Cover To Shell: N/A N/A NIA NIA NIA N/A ~NIA Fit up & Tack 6 Acee/Jr /1/f. wt ff-13-1-3' Weld Weld 1 Keyway N/A 7-36 Inner Top Cover 4 7?~ A c.e.ePT 1M c,J '-C:>C/ 1::. 15/ flcced trtwL OC.,-13-(3 To Shell: Lid/Shell . Root Weld 4 NIA 735, .Acc..e..pr nfl IA) L e>Cf-t3.f3 73~ /~Cf -RCrt!PT 01.wL oC,-J'S-/J . Weld 1 Keyway NIA 73.< lnner Top Cover 4 11-c.~l M i.-J t...., 09.r;J-/J 73~ !.SA Ac~T 111/ IL J L & '!-: 1.r-11 To Shell Lid/Shell Final Weld 4 N/A ' 7..3.5 --/111. I)] iv df-l.J*/3 73S l#'i fkc,,T /VI.(>) I-l efl-(g-ll flc..ce flt 111.,~Kef w-Lo"ell A EXAMINER: LEVEL:)L_ \x\n: .b,.. ~r'l ' OCJ-l3-L3 ,----,---Signature '-Print Name
Date EXAMINER:
LEVEL: . -Print Name Signature Date Page 21 of29
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12751-MNGP-OPS-Ol, Rev 0, Attachment 9.3 Page 3 of6 VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE Examination Date: Cf-II./.-I 3 Work Order Number:_4~64~9~5~6_- __ DSC Number: MNP-61BTH-1 -B-2-012 (!(Direct Visual: 12751-MNGP-QP-9 .201 Rev._p_ Exam Surface: Keyway Components []f'Dye Penetrant: 12751-MNGP-QP-9 .202 Rev._/_ Drawing No: NUH6 I BTH-4008 Rev. I ILLUMINATfON Light Meter Number: _,&=--~----;-~~~-~"-~=--Date Calibrated: --~LO_-~, .5~-.... /_~----Calibration Due Date: ---41..:::0'--'- l'-".5"'----'-1....J.'-I __ _ Weld No Weld2 Siphon Port: Fit up & Tack Weld Weld2 Siphon Port: Root Weld Weld 2 Siphon Port: Final Weld Weld Note 5 5 5 Gauge Foot Candles NIA 753 NIA 7.53 N I A COMPONENT TEMPERATURE~ Device Number: t;, 0t9 ;l.#i~1~~'t_l 3 Date Calibrated
ID -IS -/ Calibration Due Date: 10-/f, -14 VT Accept or Examiner Date Foot Reject Initials Candles N/A ;+cce,r //11w L. 9*/1(*13 /lCCelT ~LOL q-lJ./-11.
7.53 EXAMINER: blt C /'( ey 4) .1..o vet! LEV:EL: 1C Print Name EXAMlNE.R:

LEVEL:_ Print Name Signature Page 22 of 29 PENETRANT MATERIAL Brand: Sherwin Penetrant: KOi 7 Batch: Remover: K019 Batch: Developer: D350 Batch: PT Surface Accept or Examiner Date Temperature Reject Initials N I A N I A NIA NIA I 5;;. flccepi nllt.uL °} ,/Jv-Ll Date Date

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12751-MNGP-OPS-0.1, Rev 0, Attachment 9.3 Page 4 of6 VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello--12751 EXAMINATION METHOD ANU PROCEDURE Examination Date: q-L.~ -[3. Work Order Number: 464956 *Z I [!f" Direct Visual: 12751-MNGP-QP-9 .201 Rev.~ Exam Surface: Ke:'x'.W3:'x'. Corngonents DSC Number: MNP-618TH-1-B-2-012 0 Dye Penetrant: 12751-MNGP -QP-9.202 Rev.-+-Drawing No: NUH6 I BTH-4008 Rev, I ILLUMINATlON COMPONENTTEMPERATUR~~ '3 C,*lt,. PENETRANT MATERIAL Light Meter Number: 4eo:l.5D (()~ Device Number: fJ;2.00Q~9 ~~"' *t Brand: Sherwin b*, !J* Hl*L' Date Calibrated: LO.-L.5-,~ Date Calibrated: I~ -I':, -I~ Penetrant: K017 Batch: ..s-:3 Sit'-i9. SJ~'4 ' 1tJ-16-/1f 1..-t 'l~li-tJ 31 Calibration Due Date: Calibration Due Date: ID-I~ -/LI Remover: K019 Batch: t.pf. ,Pf.# 4 Developer: D350 Batch: Q 6r:"? 31\* 31 VT PT Weld No Weld Gauge Foot Accept or Examiner Date Foot Surface Acceptor Examiner Dnte Note Candles Reject Initials Candles Temperature Reject Initials Weld3 Vent Port: 5 NIA NIA NIA N/A NIA NIA Fit up & Tack 7s'3 Weld Aece~T */Ylw!-9-IJ;-13 Weld3 Vent Port: 5 NIA /[r;,r) Root Weld 753 Ac.ct-Pr mwL q .111-/.5 7..5,J> ~Cl~/i ti) NL 9-llf-(3 Weld3 Vent Port: 5 NIA Final Weld 753 -ACCePT Nlwl-. 9-/J.(~/j 753 I (p I ltCCe-J'T 1,y/wL 'r'-llf-J! EXAMINER: M,cft.ev c.v. 1..Dve ti LEVEL: :JI: 9-J'f~ 13 i Print Name Signature Date ' EXAMINER: LEVEL: -Print Name Signature Date Page 23 of29
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12751-MNGP -OPS-01, Rev O Attachment 9.3 Page 5 of6 VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello--12751 EXAMINATION METHOD AND PROCEDURE Examination Date: 9-/'f-/ 3 Work Order N umber:__,_4=-64"'""'9-=-5=-6 DSC Number: MNP-61BTH-1-B-2-012 Direct Visual: 12751-MNGP-QP-9 .201 Rev . ..lZl_ Exam Surface: Outer Lid Components [i;r"Dye Penetrant 127 5 1-MNGP-QP-9 .202 Rev. _L Drawing No: NUH61BTH-4008 Rev. I ILLUMINATION Light Meter Number: {cQO;l.SC~ c;l COMPONENT TEMPERATUR! 3-:, 11. Cf*'" *ll Device Number: I::, COcif:t 3 i!Fnwl... Date Calibrated
IO-I .5 -I~ Date Calibrated:
/6 I~ Calibration Due Date: 10-1.S -!If Calibration Due Date: 10 -1..5, -If-/ VT Weld No Weld4 Outer Top Cover To Shell: Fil up &Tack Weld Welll4 Outer Top Cover To Shell: Root Weld Weld4 Outer Top Cover To Shell: Intermediate Weill Weld Note 6 6 6 Gauge Foot Candles NIA 7-!l s NIA 763 NIA lb'3 ~0257 3/ Accept or Examiner Date Foot Reject Initials Candles NIA flC.c.e'/r /'/lJJJ/..... 9-//./-/: ftcceflT /t1.. w I.. 9-11./.*l.3 753 i1rl'_P A1'" l N \.( . (')Cf-/l,-13 llo~ PENETRANT MATERIAL Brand: Sherwin Penetrant: K017 Batch: '3 l S
B 5 l.f Remover: K019 Batch: 31q..: As<=> Developer: D350 Batch: 3ll-Bl l PT Surface. Accept or Examiner Date Temperature Reject NIA NIA NIA NIA ...,.... I -5 7 flcee.JJI llfltA1L 1* t"l-13 /5~°F A~.o-t t .IVlY oq-u,-13 We_td4 Outer Top Cover To Shell: Final Weld 6 zooqq 1 _ V" 'i/oK l lO 1 P\cce01-/ M \.{ D~*Ur/3 ,"t 190°F ~pf (11/,c/<et
w. Love!/ LEVEL: 7L.. Print Name EXAMINER: C/-Jf.l-13 Date Lorr'!. M *w~ LEVEL:* :1£.. Print Name c)Cj-/(:,-/ 3 Date EXAMINER:
Page 24 of29
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12751-MNGP-OPS-Ol, Rev 0, Attachment 9.3 Page 6 of6 VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE Examination Date: o~-11o-\ Work Order Number: 464956 -1..1 5r'Direct Visual: 12751-MNGP-QP-9 .201 Rev. 0 Exam Surface: Outer Lid Comgonents DSC Number: MNP-61BTH-1-B-2-012 [?'Dye Penetrant: 12751-MNGP-QP-9.202 Rev._l_ Drawing No: NUH6 I BTH-4008 Rev. I ILLUMINAT[ON COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: lo60 "l. so <o '2 Device Number: IL,(JD ZBI/ 3 2 Brand: Sherwin Date Calibrated: 10-,s--rz .. Date Calibrated
10-os--12.
Penetrant: K017 Batch: 3l5'-B~l./ Calibration Due Date: /0-/'S -I I/ Ca Ii bration Due Date: I() -OS' -f l/ Remover.: K019 Batch: 31q-A~b Developer: D350 Batch: 3\l-B-r \ VT PT Weld No Weld Gauge Foot Accept or Examiner Date Foot Surface. Accept or Note Candles Reject Initials Candles Temperature Reject Examiner Date Weld 5 Test Plug: 6 NIA NIA NIA NIA NIA NIA Install Plug 15b Artt>.o-\ t JV\ 4 !S9-IL.-l3 . \ q'3<> F Weld STest Plug: 6 NIA ,Qffiwf lS-~ ""' -_j l,~1 Root Weld 154 I ML/ ()q .. /b*/3 /\--.. o+ l _IV\ "f O't-U,-13 I *1u z".,V l'l*llf' ,., *1 *-* . Weld S Test Plug: 6 NIA 1(o 1 A(W)-}-Final Weld Aca>1* LM\.i t,f:/ .. /f,-1~ ,lot I 'lo°F l(V'\ 4 ~q .. 1,-13 I c/l_ . . EXAMINER: LQtn1 M 'fpa./.es LEVEL:zt_.. tJ,,_ h tJ9-lb-l 3 Print Name I I Signature Date EXAMINER: LEVEL: -Print Name Signature Date Page 25 of29 12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding-61BT/BTH NUHOMS Canisters ATTACHMENT 9.4: Fit up/ High-Low/ Depth Record DSC Serial Number MNP-61BTH-1-B-2-0I2 41.l)CUt punch marks me ID be made as references fo1 ongoing depth measurements. They are to be lcca~d appro,t 90 degrees apart. ** Record flush if wetGI cap is flush or higher Record the Measuring Equipment used: Weld #4 Initial Depth Root Layer Intermediate Layer Final Crown NOTE: "NIA" all of the sections that do not apply.
Page 26 of 29 e e 12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding -61BT/BTH NUHOMS Canisters ATTACHMENT 9.5 Page 1 of 3 F ield Comment and/or Repair Log Note: Major Weld Repair is defined in Section 8.10.3. DSC No Weld No. "\ Weld Repair Details a d Sketch DSC No Weld No Weld Repair Details and Sketch DSC No Weld No Weld Repair Details and Sketch WELD REPAIR LOG (Additional sheets may be attached if necessary)
Welder ID WPS \ WelderID WPS WPS \ Pa~e 27 of29 Weld Filler Metal Weld Filler Metal Weld Filler Metal
-12751-MNGP-OPS-Ol RO: Spent Fuel Cask Welding-61BT/BTH NUHOMS Otnisters ATTACHMENT 9.5 Page 2 of 3 Field Comment and/or Repair Log WELD INFO~TION INSPECTiON REQUIREMENTS Quality Level Cons~Code Repair No. Repair No. :Repa1r No. ASMEI SubNB Attribute
-* Drawing/Revision Preheat Min~m Base Material I NUH61BTH-4008 Rev.I 60F Specification -* WPS/Rev lnterpass Maxim~ Base Material l 350F Traceabilitv -.Backing Ring Purge \ Base Material 2 NIA Specification -WPS Verified:: ~ase Material 2 I raceabilitv Welder Qualification Verified: H~ogen Check NOTES: Fit U~spection Nomina~~ate Thickness Effective Th~at I Maximum t\ Reinforcement t\ I P1 Repair# Prebeat/lnterpass \ II ~a.. Temperature I\ Root Gap Limit \ q .. 1,0-~7 Purge \ Tack VTOnly \ Repair# Root VT /PT \ Final VT /PT \ \ Helium Leak Test \ after PT Welder ID \ Repair# Welder ID \ Filler Metal Type \ Filler Metal Size \ Trace No. (HeaVLot) -Page 28 of29
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12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding-61BT/BTH NUHOMS Canisters ATTACHMENT 9.5: Field Comment and/or Repair Log age 0 P 3 f3 VT/PT EXAMINATION REPORT Customer/Project:
E~/.Monticello--12751 EXAMINATION METHOD AND PROCEDURE Examination Date: Work Order Number: 46495~ D Direct Visual: 12751-MNGP-QP-9.201 Rev. __ Exam Surface: DSC Number: MNP-61BTH-1-B-2-01~ D Dye Penetrantl2751-MNGP-QP-9.202 Rev. --Drawing No: NUH61 BTH-4008 Rev. I ........... ILLUMINATION ~~ERATURE PENETRANT MATERIAL Light Meter Number: Device Num : Brand: Sherwin Date Calibrated
Date Calibrated:
/) / / Penetrant: K017 Batch: Calibration Due Date: Calibration Due Date:~ // //\ Remover: K019 Batch: 14'\ 'l q ,, 2.0 -, 1 V Developer: D350 Batch: VT PT Weld No Weld Gauge Foot Accept or Examiner Date Surface. Accept or Note Candles Reject Initials Temperature Reject Euminer Date es " '~ EXAMINER: LEVEL: --Print Name Signature "\ Date EXAMINER: LEVEL: --Print Name Signature "Date Page 29 of29

12751 MNGP-OPS-01, Rev 0, Attachment 9.3 Page 1 of6

Weld Data Sheet Quality Level 12 I DSC Serial No.: MNP-61BTH-1-8-2-013 I Welder Qualification Verified:
AA -// __ / , v~ r _., , Const/Design Code I ASME Ill Sub NB I WPS/Rev: SS-8-M-TN Rev /0 & SS-8-A-TN Rev__K T WPS Verified: /l1 ,t Backing Ring: I NIA I Preheat Minimum: I 60 F I lnterpass Maximum: 1350 F I Drawing/Revision: I NUH61 BTH-4008 Rev. I *,,.:"-Al .. *.;/'.~:~' ,:i* ,i:-ur .... , c"*"" .... * ' 1i. :"' .... ,,,,.. *1,: ,i~.,:.,;., ... **;r.w.1;,c*~t:1i"" * *:-' **,i:,;;.~':'-!,il'*!':'~!::!>'i~'.:":~*~: .~* 1i.:.1 r ip ,,;;._, d':!r' .,,,* * :"{.:~ *: '~-. "*t . INSPECTION REQUIREMENTS Attribute Weld# I Weld # I Kevwav Weld #2 Weld#3 Weld #4 Weld#S Hydrogen Ch.eek Required Required Not Required Not Required Not Required Not Required Fit Up Inspection Required Required Required Required Required Required Preheat Verified 125 by ~f) /.2.F" by (!f} /.$0 by ev /~O by ev JZd by k1l/ /ZO# by n, Maximum 0.060 inch and not to 0.060 inch and not to Reinforcement 0.250 inch 0.060 inch 0.060 inch 0.060 inch exceed the top of the exceed the top of the shell course. shell course. Preheat/Inter-pass Temp (See WPS) (See WPS) (See WPS) (See WPS) (See WPS) (See WPS) lnterpass Verified I .P.r'o by ~(). /Zr° by ~!). 179 by ca-179 by etJ Jq./'J, by 11]7 1vd by m lnterpass Verified /'1'1" by ~!) /l.fq'., by el/ by by J-¥,; " by *51".LJ / .(./2. by Interpass Verified by by by by 170 ° by ~__; / ?rJ by /;[? VT Fit up Required Required Required Required Required Required Initiate Attachment 9.3 Required Required Required Required Required Required Initiate Attachment 9.4 Not Required Not Required Not Required Not Required Required Not Required Tack VT Only Required Required Required Required Required Required Root VT /PT Required Required Required Required Required Required Filler Pass VT/PT NIA NIA NIA NIA Required NIA At Flu.vh: Complete Not Required Not Required Not Required Not Required Required Not Required Attachment' 9.4 Welding Supervisor sign Required Required Required Required Required Required off, prior to NDE Final VT /PT Required Required Required Required Required Required Helium Leak Test Required *Required Required Required Not Required Not Required Welder ID BM-// BM-// BM-II BM-// BM-// /j r,,J,-BM-ss. Welder ID BM-4',3 BM-~J BM-4!> BM-'G BM-'f 3 .6MS5 BM-Filler Metal Type ER308 ER308 ER308 ER308 F,K-1$ ER308 g,.._ .. 31 ER308 Filler Metal Size (See WPS) (See WPS) (See WPS) (See WPS) (See WPS} (See WPS) Trace No {Heat/Lot) 736908/ XT8882 736908/ XT8882 737880/CT or DT9023 737880/CT or DT9023 736908/ XT8882 737880/CT or D T 9023 737~,o I crqo'23 7 J,i'it o / or ,02..s Page 20 of 29
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12751-MNGP-OPS-Ol, Rev 0, Attachment 9.3 Page 2 of 6 VT/PT EXAMINATION Customer/Project:
Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE Examination Date: 11.-:l.3-L~ Work Order Number: 464956 [!(°Direct Visual: 12751-MNGP-Q P-9.201 Rev . ...,L. Exam Surface: Inner Lid Comnonents DSC Number: MNP-61 BTH-1-8-2-013 [9'Dye Penetrant: t 275 t-MNGP -QP-9.202 Rev._J_ Drawing No: N!.JH61BTH-4008 Rev. I ILLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: 4' oo"::l. 5o c. tt. Device Number: laOOa~~ '3 Brand: Sherwin Date Calibrated: /(!)-/~*l,3. Date Calibrated
,ofA. I g.~l;}. Penetrant:
K017 Batch: .~ I b -f?.S l..f ( I Calibration Due Date: Ll!J*l~-1~ Calibration Due Date: l bj 6.t I Remover: K019 Batch: 3\~ -A~{, Developer: D350 Batch: i:2.ll _a,71 VT PT Weld No Weld Gauge Foot Accept or Examiner Date Foot Surface. Acceptor Examiner Date Note Candles Reject Initials Candles Temperature Reject Weld I Inner Top Cover To Shell: NIA NIA NIA NIA NIA NIA NIA Fitup& Tack SO"I Aec~ . Weld /flt,{}/.
q. ~.1~ Keyway . Weld I NIA R~l-i 9-J34:. 80* Lf /87~* * /-1 C~e!T' .tJf .. :J 3~{:1 Inner Top Cover 4 l.f.rrelT f(lb:JJ_ MWL To Shell: Lid/Shell
' C) Root Weld 4 NIA 804 f\CcepT f(lWL q -),J.& 81' 4 I B-3 . -MWL t:t-').'3*/3 AcC.ePI Weld I Keyway NIA 96i.t AcceP1 tt)OO~ ~*J3*t 8'~ 171° -t!/ -';J 3-)'[: Inner Top Cover 4 ft~'fJ( mwi... To Shell Lid/Shell --J 7B (!) Final Weld 4 NIA 8 O"-J flccep I M~L -$-1'3 eo~ trrr:.eh f(l vJ L q--i3-IJ EXAMINER: tfh.Jtt'i Id. kt1e /( LEVEL: jL_ V\Tt~ ~--&~Q 9 .. ~:S* 1,1 , Print Name : Signature Date EXAMINER: LEVEL: -Print Name Signature Date Page 21 of29

12751-MNGP-OPS-Ol, Rev 0, Attachment 9.3 Page 3 of6

VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello--- 12 7 51 EXAMINATION METHOD AND PROCEDURE Examination Date: ~~;).4-1-::? Work Order Number: 464956 ~Direct Visual: 127 5 1-MNGP-QP-9.201 Rev.1-_ Exam Surface: Ke)'.Wa)'. Com12onents DSC Number: . MNP--61BTH-1-B-2 -013 [g"oye Penetrant: 12751-MNGP-QP-9.202 Rev._L_ Drawing No: NUH6 I BTH-4008 Rev. I ILLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: l,C)CJ~ 50~ "J-Device Number: ,6o~<i?'ll.3 Brand: Sherwin Date Calibrated
141t-0;;2
.. Date Calibrated: LOI 5. Li;;; Penetrant: K017 Batch: ,11::, -B6H r f 11./ Calibration Due Date: '/4!!~!1-Calibration Due Date: 1of-~m.w._ Remover: K019 Batch: :1l~ -l"i..(G, ep-:J$./*f.J ..311 -Bil Developer: D350 Batch: VT PT Weld No Weld Gauge Foot Accept or Examiner Date Foot Surface Accept or Examiner Dote Note Candles Reject Initials Candles Temperature Reject Initials Weld2 Siphon Port: 5 NIA N/A NIA N/A NIA NIA Fit up & Tack flt/7 lt.X,e/JT mw1v 6/-Jl.f *13 Weld .. Weld2 847 Siphon Port: 5 NIA @47 9-;}l-12 /?tl' Acc~l'I JI/I iJL Cf'-Jl/-13 Root Weld Acu:Pt "* (IA (µI.... Weld2 /7~() -t=, .. 3,4-13 Siphon Port: 5 NIA 9<t7 -. B117 ;4CG~f I {1A uJ /... Final Weld J4ce~PI Vr\. cJ) "-'°l-'J.'1-l .. M,r:kev IP. l..ovel/ -\.(\/\ :,_ I! J k.J ~01) -~J./-13 EXAMINER: LEVEL: ..ti.. PrinrName*. ,gnature \ Date EXAMINER: LEVEL: -Print Name Signature Date Page 22 of29
e 12751-MNGP-OPS-Ol, Rev 0, Attachment 9.3 Page 4 of6

VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE Examination Date: 9-fJ.~-t.3 Work Order Number: 464956 ff Direct Visual: 12751-MNGP-QP-9 .201 Rev._r;f__ Exam Surface: Ke):'.Wa):'. Com12onents DSC Number: MNP-61 BTH-1-B-2-013 [g"Dye Penetrant: 12751-MNGP -QP-9.202 Rev.~ Drawing No: NUH6 I BTH-4008 R!;,v. I ILLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: tn~~ S Q/Q Device Number: (~ ';}~3~ Brand: Sherwin Date Calibrated: 10/1!!.(1~ Date Calibrated: Jr,/ :: / 1 ";l.: Penetrant: K017 Batch: ..315 -.B s 'f Calibration Due Date: I O.L1 6[,1-4 Calibration Due Date: /c/
S I IL../ Remover: K019 Batch: l e,l -A--1 1 1 l Developer:
0350 Batch: 3l I -!?, 7 L VT PT Weld No Weld Gauge Foot Accept or Examiner Date Foot Surface Accept or Examiner Date Note Cnndles Reject Initials Candles . Temperature Reject Initials Weld3 Vent Port: s N/A N/A NIA N/A N/A N/A Fit up & Tack 8>-f> Acc-eA fV)WL C(,()1./-J-' Weld -Weld3 Vent Port: s NIA 1,qo 14cce;JT Root Weld fJN7 -9N1 ni>w1-q-JJ.l-13 A:ctef>I fJJ()JL ~1-.J'I{ Weld3 q-~J.(-)'3 f 81" AC{;ePT n(,vJI... e,-,J .. H-13 Vent Port: 5 NIA 9 4? P,cc.ePr {IAWL '?tt7 Final Weld \ ~Q EXAMINER: f1//1cker
w. Ltwel{ LEV.EL: /) f-~,-~_ ~, \~ q . ';;."f, l ? Sighature
-Date Prin Name EXAMINER: LEVEL: -Print Name Signature Date Page 23 of29 e e
12751-MNGP-OPS-Ol, Rev O Attachment 9.3 Page 5 of6 .. . VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello--12751 EXAMINATION METHOD AND PROCEDURE Examination Date: q-~~-:-1 '"3 Work Order Number: 464956 [}t"'.oirect V i sual: 1 2151.M N G~-Q P-9.2 0 1 Rev.~ Exam Surface: Qute r Lid Comt1onents DSC Number: MNP-61 BTH-1-B-2-013 ~e Penetran t 1 2751-M N GP -QP-9.202 Rev._L_ Drawing No: NUH6 I BTH-4 008 Rev. I ILLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Ligh t Meter Numb er: ~Ot:J:;. 5 ("') la do-Device Number: ~t:Jo (;) ~Lo/ 3 ;i. Brand: Sherwin Date Calibrated
1oj11,/f;;J Date C a libr a ted: loLsha ' l Penetr a n t: K017 Ba t ch: .:<t.5-St>'; Calibration Due Date: I '2fl.S.f llJ_ Calibra t ion Due Date: t.ots it!:/.. Remover: K019 Ba t ch: 1.{C/ -Ii ~l, Developer:
0350 Batch: :?.U -8 7 l V T PT Weld No Weld Gauge Foot Accept or E x aminer Date Foot Surface. Accept or Examiner Date Note Candles Reject Initials Candles Temperature R e ject Weld4 Outer Top Cover 6 NIA ~/./7 ACCePT NIA NIA NIA NIA NIA To Shell: Fil up MWL °I-J!l-13 &Tack Weld Wtld4 Outer Top Cover 6 N/A ... r/)v.JL 9-J,J{{, '247 lq 4 AccefT MWlv cr-~~-13 To Shell: Root ~i./7 -Weld ACC.~/.J I Weld4 Outer Top Cov e r To Shell: 6 NI A Intermed i ate 184 kcf:PT Lff\4 ( A-Z'i*/3 lRY \90<>>F Aru=P, l.MY ~ff-Z'l-1~ W e lti Weld4 (t031513f Outer Top Cover 6 /Zoo91 /(.(m)t T o Shell: Final 01'-v,t.'f r1RLI ~?T l.Ml/ 1B4 lRS°F LM4 Weld i(!fl,Z5*1E ~-25"-,3 o/1.,c.t,r.ey v,J. J._ov'el/ ....... \M_ ~h..' Q-;J.c.;-13 EXAMINER: LEVEL:..JL Prin t Name ;Signarure -Date EXAMfNER: lafr11 rl\ Ve a-ks LEV E L: ::J{; ()~'2'{-/3 sff:t Print Name Date Page 24 of29
e

12751-MNGP-OPS-01, Rev 0, Attachment9.3 Page 6 of6 VT/PT EXAMINATION REPORT Customer/Project Excel/Monticello---12751 Examination Date: 0 9-2 L/-I 3 Work Order Number:~4~64 ...... 9-=5~6 ______ _ EXAMINATION METHOD AND PROCEDURE g"Direct Visual: 121s1-MNGP-QP
-9.201 Rev.~ G?'Dye Penetrant: 12751-MNGP-QP -9.202 Rev. _L Exam Surface: Outer Lid Co~ponents DSC Number: MNP-618TH-1-B-2-013 ILLUMINATION Light Meter Number: (oOO 2. 50 "Z Date Calibrated
/6 -14S -J '2. Calibration Due Date: Jo* /S"-I t/ Weld No Weld STest Plug: Install Plug Weld S Test Plug: Root Weld Weld STest Plug: Final Weld Weld Note 6 6 6 Gauge NIA NIA NIA Foot Candles EXAMINER:
Lo. r~ /\1. Yectff s rintName EXAMINER:

Print Name COMPONENT TEMPERATURE Device Number: 00028.</ 32 Date Calibrated:

It> -o~-12 Calibration Due Date: 1..0. -OS" -/'/ VT Accept or Examiner Date Foot Reject Initials Candles NIA Cff-c'l*t LEVEL: LEVEL: Signature Page 25 of29 Drawing No: NUH61BTH-4008 Rev.I PENETRANT MATERIAL Brand: Sherwin Penetrant: KOl7 Batch: 31S-B5:'t Remover: KOl9 Batch: 314-A S"b Developer: D350 Batch: 5 ,,_ 1371 PT Surface. Accept or Examiner Date Temperature Reject NIA NIA NIA NIA 09-2'1-!3 Date Date
e 12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding-61BT/BTH NUBOMS Canisters ATTACHMENT 9.4: Fit up /High-Low/
Depth Record DSC Serial Number MNP-61B T H-I-B-2-013 41.i)C)ut punch mub are tD be made as references loJ ongoing depth measurements. They ue IC be lceated approx 90 degrees apart. "Record~ if weld cap is fush or higher µ: ~0025-0/ De th Measurements for Weld Weld #4 180 degree Initial Depth Root Layer Intermediate Layer Final Crown 270 degree -* (o/'{ NOTE: "NIA" all of the sections that do not apply. Page26 of29 e -12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding-61BT/BTH NUHOMS Canisters ATTACHMENT 9.5 DSC No Weld Repair ~etails and DSC No Weld No Weld Repair Details and Sketch DSC No Weld No Weld Repair Details and Sketch Page 1 of3 Field Comment and/or Repair Log WELD REPAIR LOG Additional sheets ma be attached ifnecessa WPS Welder ID WPS Welder ID Page27 of29 Weld Filler Metal Weld Filler Metal Weld Filler Metal e 12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding -61BT/BTH NUHOMS Canisters ATTACHMENT 9.5 Page 2 of3 Field Comment and/or Repair Log WELD INFORM.A TION INSPECTION REQUIREMENTS /' Quality Level Const/Design Code Repair No. Repair No. ~irNo. ASME III Sub NB Attribute / / Drawing/Revision Preheat Minimum Base Material I / NUH61BTH-4008 Rev.I 60F Specification WPS/Rev lnterpass Maximum Base Material 1 V 350 F Traceability / Backing Ring Purge Base Material 2 / NIA Specification WPS Verified:: Base Material 2 / -Traceabilitv Weld~r Qualification Verified: V Hydrogen Check/ NOTES: Fit Up lnsp~n Nomin~ate Thkkn s Eff~e Throat l~ximum \ -\ mforcement >air# 1'Y' u<'))l/ Preh.eat/1 nterpass Temperature Root Gap Limit t Purge Tack VT Only Repair# Root VT /PT Final VT/PT Helium Leak Test after PT Welder ID Repair# Welder JD Filler Metal Type Filler Metal Size Trace No. (Heat/Lot)
Page28 of29 r e

12751-MNGP-OPS
-01 RO: Spent Fuel Cask Welding-61BT/BTH NUHOMS Canisters ATTACHMENT 9.5: Field Comment and/or Repair Log age 0 P 3 f3 VT/PT EXAMINATION REPORT Customer ct: Excel/Montic e llo---12751 EXAMINATION METHOD AND PROCEµURE Examinatio n Date: Work Order Number: 4956 D Direct Visual: 12751-MNGP-QP -9.201 Rev. __ Exam Surface: DSC Number: MNP-61 B~-013 0 Dye Pene t ran t l275 1-MNGP-QP-9 .2 02 Rev. --Drawing No: NUH6 I B T H-4008 Rev. I ............. ILLUMINATION ~EMPERATURE PENETRANT MATERIAL Light Meter Number: . Brand: Sherwin Date Calibrated: ' Penetran t: K017 Batch: C a l i brat i on Due Date: Calibration Due~ Remover: K012 Batch: .9--~6'~~ '/> Developer: 0350 Batch: VT -' PT Weld No Weld Gauge F oot Acceptor E x a miner Date c~ Surface. Acceptor Examiner Note Candle s R e ject Initials Temperature Reject Date ""' -EXAMINER: LEV EL: -Print Name Signature \"* EXAMINER: LEVEL: --Print Name S i gnatur e Dd\e \ \ Page 29 of29
I

12751 MNGP-OPS-01, Rev 0, Attachment 9.3 Page I of6

Weld Data Sheet Quality Level 12 I DSC Serial No.: MNP-61 BTH-1-8-2-014 I I Welder Qualification Verified:
A'J.ftA , --AA II 0 Const/Design Code I ASME Ill Sub NB I WPS/Rev: SS-8-M~ TN Rev 10 & SS-8-A-TN Rev~ I \\'PS Verified: />?(<_ Backing Ring: I N/A I Preheat Minimum: I 60 F I
I In~erpass Maximum: 350 F I Drawing/Revision:
I NUH61 BTH-4008 Rev. I a;;: -~* m .-..ff, *. **r* .. **;,*~*~l"-ti:l-' ... .. . *,"* c.:c.,.a~:"'* '2c::::O :* * . .. :*[ **.. *~ *~ **~-~<<-&:]{~*:
~.? .. ~*-=r:.t~,.~~
=-~~ . '-'Ir. *-.-~~... -***.~, ** -~ -~ ., .. INSPECTION REQUIREMENTS Attrjbute Weld# 1 Weld# 1 Key~ay Weld#2 -Weld#3 -Weld #4 Weld #5 Hydrogen Check Required Required , Not Requ i red Not Required Not Required Not.Required Fit Up Inspection Requ i red Required , Required Required Required Required Preheat Verined 'A7 by elJ F/7 by ',t?,,f) 'If/" by PB No" by rB f:150 by 'ti) /2..1 by #\it~ Maximum* 0.060 inch 1 0.060 inch and not to 0.060 inch and not to
Reinforcement 0.250 inch 0.060 inch 0.060 inch exceed the top of the exceed the top of the I shell course. shell cour~e. Preheat/Jnter-pass Temp (See WPS) (See WPS)i (See WPS) (See WPS} (See WPS} (See WPS) Interpass Verified 119 by t!J ~9 by , t~ 1b1 d by P.6 I lb' by m /OB by /t.n by M({_ lnterpass Verified q7 by l!fJ 97 by .~J) /30 by {jflf ,30~ by f'.d 16:,S-by MR by lnterpass Verified by by by by 171-by Mfl.. by VT Fit up Required Required , Required Required Required Required Initiate Attachment 9.3 Required Required 1 Required Required Required Required Initiate-Attachment 9.4 Not Required Not Require4 Not Required Not Required Required N9t Required Tack VT Only Required Required ' Required Required Required Required Root VT /PT Required Required 1 Required Required Required Required Filler Pass VT/PT N I A N I A I N I A N I A -Required N/A I At Flu.flt: Complete Not Required Not Required Not Required Not Required Required Not Required Attachment 9.4 Welding Supervisor sign Requ i red Required 1 Required Required Required Require<!
off, prior to NOE I Final VT /PT Required Required 1 Required Required Required Requ i red Helium Leak Test Required Required 1 Requ i r~d Required Not Required Not Required Welder ID BM-fl HM-11 I BM-.31 / Br,'\ 18 BM-~,/ BM IA BM-/I e,,., I BM-r;' Welder ID BM-'-/3 BM-L/J BM-I BM-I BM-1./3 6"" ss BM-fl
6Mlf3 Filler Metal Typ~ E R308 ER308 I ER308 ER308 ER308 gR308 I Filler Metal Size (See WPS) {See WPS), (See WPS) (See WPS) (See WPS} {See WP~) Tr~ce No (Heat/Lot) 736908/ XT8882 736908/ XT8882 737880/CT or DT9023 737880/CT or DT9023 736908/ XT8882 737880/CT or DT9023 7>f!J>1)/ crCfo'2J 7}7S8D / Dr qo_z.3 Page 20 of 29 I

e

12751-MNGP-OPS-Ol, Rev 0, Attachment 9.3 Page 2 of6 VT/PT EXAMINATION I Customer/Project
Excel/Monticello--
-12751 EXAMINATION METHOD AND PROCEDURE Examination Date: LOIi Li 3 f [M"birect Visual: 1 2 751-~0 P-QP-9.2 01 ., i . r I Work Order Number: 4§4256 Rev._o__ Exam Surface: Inner Lid Comnonents ! I Ji315ye Penetrant: 12751-MNGP-QP-9 .202 . . ' DSC Number: MNP-61 BTH-1-8-2-014 Rev. --Drawing No:
NUH61 BTH-40Q8 R~v, I ' ' TLLUMJNATJON COMPONENT TEMPERATURE PENETRANT MATERIAL ({lt20~ C Cl, : Light Meter Number: Device Number: *>e ';;l. .W J.t 3 0.. Brand: Sherwin I Date Calibrated:
10~ rl, -JOt ;;1 Date Calibrated
10/6/~o,a r I 3lS-135!/

Penetrant

K017 Batch: Calibration Due Date: l~*fb-J-0(~ Calibration Due Date: 10,L 5 /_ '::JoL '::t. Remover: K019 Batch: 3 r 'o/ * ,4 5G, : ' Developer: D350 Batch: 3/l-l2.'?f I VT PT we,d No Weld Gauge Foot Accept or Examiner Date Foot Surface. Accept or Examiner ... Date Note *Candles Reject Initials Caadles Temperature Reject Weld J I Inner Top Cover To Shell: NIA NIA NIA NIA NIA NIA NIA : Fit up & Tack B38 ~cceJJ1 m Jnl... !ol,/J1 Weld Keyway ' Weld 1 NIA 838 Ac.c.eft 1e>kh~ @38 /3J fl.~ejJr ir>J, !, i-:: Inner Top Cover 4 Mr~L (711(.o/..., To Shell: Lid/Shell Root Weld 4 NIA ~gB /\cu.f1 1111. w I o}rt/3 : 8.39 I~ ({ Aef_ep'f m liJ '-ldt(,i Keyway
I Weld 1 NIA f}Jg I Inner Top Cover 4 /ICCf>fJT hflWL lo /;JrJ g3B I J.(O A-ccef I NI()..) L -10/1 /13 To Shell Lid/Shell I 838 838 . Final Weld 4 NIA (1Ce{J'T 1711.. 41;._ lo/ ,ft~ I '-IS /tee/IT 1117 lit} I.... la/1/;s EXAMrNER:
N'l,cr-<e& t.> Lovett LEVEL: ;t:C \N\:: Jb. b-~. -J_ -~ Loi£ Lt '3 ' . --.Ls* rt
Pri tName

1gnature Date . I EXAMINER:
L~VEL: -Print Name Signature Date ! Page 21 of29
e

12751-MNGP-OPS-Ol, Rev 0, Attachment 9.3 Page 3 of6 VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE Exami nation Date: ( 0 -0 Z -*f 3 Work Order Number: 464956 ~Direct Visual: 121s1-MNGP-QP-9 .201 Rev._g[_ Exam Surface: Ken,ya~ Com~onents DSC Number: MNP-6 1 BTH-1-B-2-014 ~Dy e Penetrant: 12751-MNGP-QP-9.202 Rev. I Drawing No: NUH6 I BTH-4008 Rev. l --ILLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: ~co Z 5"D <:? 2 Device Number: 0M'28:I 3Z Brand: Sherwin Date Calibrated: 10-1S--1"2.. Date Ca libra ted: to-as -l 2. Pene trant: K017 Batch: 315"-BS~ Calibration Due Date: f 0-( $ -/ '-I Calibration Due Date: to-os -l~ Remover: K019 Batch: 319-A5b Developer: D350 Batch: 3fl-B,f VT PT Weld No Weld Gauge Foot Acceptor Examiner Date Foot Surface Accept or Examiner Date Note Candles Re ject rnitial s Candles Temperature Reject Initials Weld2 Siphon Port: 5 NIA NIA* NIA NIA NIA NIA Fit up & Tack Weld 15"5" ArlfPT L(()'-/ I0-67-13 Weld2 . Siphon Port: 5 NIA Root Weld n55 4rc.fPT 155 130°F l Jtlll ln-o'Z* l'1 p{tEP, (_r.t\l( lo-62-1;3 . Weld2 Siphon Port: 5 NIA .Final Weld 15S-Are£Pr /0-0Z...t3 1.c.;r:: (9{)0f Aa..EPT l M~ l Mtf IO*<rz.-r3 EXAMINER: laav M Yeg-/es LEVEL:-:Jl.-,I) .,, ,, u .. h Lo-02.-/-3 Print Name --' Signature Date EXAMINER: LEVEL: -Print Name Signature Date Page 22 of29 e e 12751-MNGP-OP$-Ol, Rev 0, Attachment 9.3 Page 4 of 6 e VT/PT EXAMINATION REPORT Customer/Project: Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE Examination Date: 16-0Z-/3 -i:s;t'Direct Visual: 127Sl-MNGP-QP-9 .201 Rev.~ Exam Surface: Work Order Number: 464256 Ke'.)'.Wa):'.: Comgonents DSC Number: MNP-61 BTH-1-6-2-014 Dye Penetrant: 121s t-MNGP -QP-9.202 Rev._L_ Drawing No: N!.!H61 BTH-4008 Rev. I ILLUMINATrON COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: G,oo 2so"' z. Device Number: k>CC 2 84 '3 2. Brand: Sherwin Date Calibrated: tn-tS -12 Date Calib~ated
,o-os-'2. Penetrant:
K017 Batch: '31'5"-BS-~ Calibration Due Date: to-rs-LY Calibration Due Date: lo I Remover: KOl9 Batch: "3{9-AS-Co Developer: D350 Batch: 311-B"11 VT PT Weld No Weld Gauge Foot Accept or Examiner
Date Foot Surface Accept or Examiner Date Note Candles Reject Initials Candles Temperature Reject Initials Weld3 Vent Port: 5 NIA NIA NIA NIA NIA NIA Fit up & Tack Weld -,55 IAC!.EPT lfi\L( IO*oZ.*t~
Weld3 Vent Port: 5 NIA Root Weld 15'~ Arc~t>T Lf'I\ l0-62-13 ,55 (Pl)Of ACtEPr lM4 lo-02-13 Weld3 Vent Port: 5 NIA Final Weld -,s-s Aa.ED, l~S"' lQ{)"F I\ ,AIO Gf'i' LM'-1. /6-o2-f3 lft\t..t 10-<l2.-f3 rtc.J.I7r EXAMINER: Lo.~ M Y..eo..~s LEVEL:~ ~M,!l&h L0-62-13 Print Name ' g1gnature Date I EXAMINER: , LEVEL: -Print Name Signature
Date* Page 23 of 2_9

e e 12751-MNGP-OPS-Ol, Rev O Attachment 9.3 Page 5 of6 ' VT/PT EXAMINATION REPORT ! : Customer/Project:
Excel/Monticel lo--12 7 51 EXAMINATION METHOD AND PROCEDURE Examination Date: Lo}_ :J/_t 3 Work Order Number: 464956 l0"oirect Visual: 12751-MNGP
QP-9.201 Rev.~ Exam Surface: Outer Lid ComRQnents DSC Number: MNP-61 BTH-1-B-2-014
!B'f>ye Penetrant 12751-MNGP -QP-9.202 Rev._L_ Drawing No: N!.1H61~TH-4008 R~v,J ; : lLLUMlNATION COMPONENT TEMPERATURE PENETRANT MATERIAL . Light Meter Number: U,O:) .!50 t.;J.. Device Number: ~/.( :l. Brand: Sherwin . Date Calibrated: 10-1~-l:l.. Date Calibrated: 10-.s-1~ Penetrant: K017 Batch: 3ri-S.Slf ; . Calibration Due Date: to-.ts~I Calibration Due Date: 10-.S-/!f Remover: K019 Batch: 3A * ,(~G, I Developer: 0350 Batch: .3Lt -f37L 1 VT PT I Weld No Weld Foot Accept or Examiner Foot Surface. Accept or ' Note Gauge Candles Reject Initials Date Candles Temperature Reject Examiner Date Weld4 Outer Top Cover i 6 NIA 750 NIA NIA NIA NIA NIA To Shell: Fit up A.ece-J.T {1})1 ... \L lnl.!1/Li. &Tack Weld I Weld4 . .,\*** I Outer Top Cover 6 NIA *-:~; To Shell: Root 7so 10/~}l_t -; .So 1,, .. ._ IO/M1 -/11WL f{ctetl rill w~ Weld AccePl Weld4 C Outer Top Cover To Shell: 6 NIA Intermediate t5o Acc.ei>T (Y'lw L 10/J/,z ?st lsB 0 /.lecepT Ill IA L 10/dJ.1:s Weld .. . Weld4 2oc)C'jq -Outer Top Cover 6 ' To Shell: Final oK ~(( ,5o L"" '-1 /0*0 'Z.-f! 1~(> /lf9°f Arc6P7 /D~oz-1i3 Weld { Ml/ LEVEL:'LL '-<-v,'-~~ ~-~() .* *'µ' EXAMINER: trl, ~eti t.J. Leve If I ot_':i L_1. 3.*. { ., * ;: ' . Prif!t ame * . ot.C:tgn*, Date : EXAMINER: /._o~* M 'i&_+e S. LEVEL: ;rt:. ' * -.IA.. *!lt,Ar. '? . /6-<:::,2:.-
L3 PrintName

I /signature
.. Date :,. I : Page 24 of29
e 12751-MNGP-OPS-Ol, Rev O, Attachment 9.3 Page 6 of6 VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE Examination Date: 1 0-() Z -I Work Order Number: 464956 Direct Visual: 12751-MNGP-QP-9 .201 Rev.~ Exam Surface: Outer Lid Com[!onents DSC Number: MNP-61BTH-1-B-2-014 [id"Dye Penetrant: 121s1-MNGP-QP-9 .202 Rev._l_ Drawing No: NUH61BTH-4008 Rev.I ILLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: W)0250Cc2 Device Number: <.ooo 28422 Brand: Sherwin Date Calibrated: Lo-1~-12 Date Calibrated: LO-eJ5-12 Penetrant: KOl7 Batch: 3 !5'-.8S"'r' Calibration Due Date: /0-/5'-l 'I Calibration Due Date: LO -OS"-L'I Remover: K019 Batch: :3l'i -AS'b Developer: D350 Batch: 3 (, _ B1 J VT PT Weld No Weld Gauge
Foot Accept or Examiner Date Foot Surface. Acceptor Examiner Date Note Candles Reject Initials Candles Temperature Reject Weld STest Plug: 6 NIA NIA NIA NIA NIA NIA' Install Plug -,r;q CJl"£J;PT
/ Ml,/ 1 1 fl-()2...J 3 -Weld S Test Plug: 6 NIA 75"q -,5q J(~Of"" ~Pr Root Weld Aa:ePT UV\ Lf Jo-oz-,! lfvlL{ . /()-62.-13 Weld 5Test Plug: 6 NIA Final Weld 7~0 C.rr;:;p, f cvt 'l {0*02-f) ,s-o {L/5°F Arr£Pi UV2'1 JlJ-oi-13 EXAMINER: l.a~ /YI Yea+/-s LEVEL:~ rL /\-1 l/~b lo. -az-13 ..... I Sfgnature Date ~intName * . EXAMINER: LEVEL: -Print Name Signature Date r Page 25 of29 e e 12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding-61BT/BTH NUHOMS Canisters ATTACHMENT 9.4: Fit up/ High-Low /Depth Record T DSC Serial Number MNP-61BTH-1-B-2-014 depth 1'29rrin 4 la)Dnt p11llch marks are tn be made as references fo1 ongoing depth measurements. They are ID be located approx. 90 degrees apart. .... Record Flush if weld cap is 111.1:sh Of tigher I/Ah ta 002£"*731 Depth Measurements for Weld Weld #4 0 degree 90 degree 180 degree Initial Depth * {,'12 .~3, . "33 Root Layer .'/$8 . 3f.J . 'f22. lntennediate Layer . *19i * \ ~?J '~:;\ Final Crown . '" I oCJv , /t. I NOTE: "NIA" all of the sections that do not apply. Page26 of29 270 degree
C,.3" .~17 , .,_,C\ .o~I
-e 12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding-61BT/BTH NUHOMS Canisters ATTACHMENT 9.5 Weld No. DSC No Weld Repair Details and Sketch DSC No Weld No Weld Repair Details and Sketch Page 1 of3 Field Comment and/or Repair Log WELD REP AIR LOG Additional sheets ma be attached if necessa Welder ID WPS Welder ID WPS Welder ID Page 27 of29 Weld Filler Metal Weld Filler Metal Weld Filler Metal -12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding -61BT/BTH NUHOMS Canisters ATTACHMENT 9.5 Page 2 of3 Field Comment and/or Repair Log WE~D INFORMATION INSPECTION REQUIREMENTS Quality Level \ Const/Design Code Repair No. Repair No. Repair No. ASMEI11SubNB Attribute Drawing/Revision '\ Preheat Minimum Base Material 1 NUH61BTH-4008 Rev.l i\. 60F Soecification WPS/Rev ~rpass Maximum Base Material 1 350 F Traceability Backing Ring. Pur~ Base Material 2 NIA Specification WPS Verified:: \ Base Material 2 Traceability Welder Qualification Verified: '\ Hydrogen Check NOTES: ~('\ Fit Up Inspection Nominal Plate Thickness l ~ective Throat " t\, 17Ma~m ~\L \t)}.:' Rcinfo cmcnt pair# Prehe~~pass Tempera tu Root Gap Liml\. Purge '\ " Tac_k VT Only "' Repair# Root VT /PT \ Final VT /PT \ Helium Leak Test \ after PT I\ Welder ID \ .. Repair# Welder ID \ Filler Metal Type \ Filler Metal Size \ I\ Trace No. \ (Heat/Lot) e Page28 of29
e

12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding-61BT/BTH NUHOMS Canisters ATTACHMENT 9.5: Field Comment and/or Repair Log P 3 f3 a2e 0 . VT/PT EXAMINATION REPORT I I Customer/Project:
Excel/Monticello---12 7 51 EXAMINATION METHOD AND PROCEDURE Examination Date: Work er Number: 464956 0 Direct Visual: 12751-MNGP-QP-9 .201 Rev. __ Exam Surface: DSCNumbe. MNP-61BTH-1-B-2-014 D Dye Penetrant12751-MNGP-QP-9.202 Rev. --Drawing No: NUH6 IBTH-4008 Rev. I "' ILLUMINATION~ COMPONENT TEMPERATURE PENETRANT MATERIAL . I Light Meter Number: Device Number:* Brand: Sherwin I Date Calibrated: "' Date Calibrated: Penetrant: K017 Batch: I . Calibration Due Date: Calibration Due Date: Remover: K019 Batch: Developer: D350 Batch: ! '\T PT Weld No Weld Gauge Foot* ~~or Examiner Foot Surface. Accept or Note Candles ct Initials Date Candles Temperature Reject Examiner Date , " -I ' ; ) l'--..A-( flt. lf /0-(J ?_ /3 : "' . i " EXAMJNER: L EVEL: --Print Name Signature Date : EXAMlNER: LEVEL: . --Print Name Signature Date . Page 29 of29

12751 MNGP OPS 01 R O At h 9 3 P 1 f6 ---* ev ' tac ment . age 0 Weld Data Sheet Quality Level 1 2 I DSC Serial No.: MNP-61BTH-1-8-2-015 I Welder Qualification Verified: /L,,, I Const/Design Code I ASME Ill Sub NB I WPS/Rev: SS-8-M-TN Rev /() & SS-8-A-TN Rev 8 "I WPS Verified:
ma_ Backing Ring: I N/A I Preheat Minimum: I 60 F I lnterpass Maximum: I 350 F I Drawing/Revision: I NUH6 I BTH-4008 Rev. I I INSPECTION REQUIREMENTS Attribute Weld# 1 Weld # 1 Kevwav Weld #2 Weld #3 Weld #4 Weld #5 Hydrogen Check Required Required Not Required Not Required Not Required Not Required Fit Up Inspection Required Required Required Required Required Required Preheat Verified lftv by r,lt. 9.F" by ~/J en" by Fe /(,-' '17" by P8 q /&> by Nf'l. 9/" by !ft.{( Maximum 0.060 inch and not to 0.060 inch and not to Reinforcement 0.250 inch 0.060 inch 0.060 i nch 0.060 inch exceed the top of the exceed the top of the shell course. shell course. Preheat/Inter-pass Temp (See WPS) (See WPS) (See WPS) (See WPS) (See WPS) (See WPS) Interpass Verified 1"<11 ° by e11 /03° by /?.0 , zo~ by Pili -,><:. JI~ by 10~* by "PR /~ 1' by f)'o/? lnterpass Verified by by /1<ld by £'.),~ /3]" by ~-y /~70 by ~(J by . , I 2.<./0 d) lnterpass Verified by by by by by by VT Fit up Required Required Required Required Required Required Initiate Attachment 9.3 Required Required Required Required Required Required lnitiate Attachment 9.4 Not Required Not Required Not Required Not Required Required Not Required Tack VT Only Required Required Required Required Required Required Root VT/PT Required Required Required Required Required Required Filler Pass VT/PT NIA N I A N/A N/A Required NIA At Flus/,: Complete Not Required Not Required Not Required Not Required Required Not Required Attachment 9.4 Welding Supervisor sign Required Required Required Required Required Required off, prior to NDE Final VT /PT Required Required Required Required Required Required Helium Leak Test Required Required Required Required Not Requii:;.Q. ,o Not Required Welder ID BM-\~ BM-tjj BM-11 . *.B.M-13 BM-S'S' Rrv.-1'b BM-J,.. /Pi3i BM-~S B/'J\-1i Welder JD BM-'l3 BM-// BM-5'~-BM-J\ 8/t\* r I BM-5 '57 /./Jl'I / I BM-II Filler Metal Type ER308 ER308 ER308 ER308 OP -'f~R308 ER308 Filler Metal Size (See WPS) (See WPS) (See WPS) (See WPS) (See WPS) (See WPS) Trace No (Heat/Lot) 52722 I/XF9689 52722 I/XF9689 737880/CT or DT9023 737880/CT or DT9023 527221/XF9689 73 7880/CT or DT9023 Trace No (HeaULot) 11 r /c.V I -1()}.J ':17 S't> c..-r qi) °Z; 73 7880/CT or DT9023 Page 20 of29
e

12751-MNGP-OPS-Ol, Rev 0, Attachment 9.3 Page 2 of 6 VT/PT EXAMINATION Customer/Project:
Excel/Monticello--12751 EXAMINATION METHOD AND PROCEDURE Examination Date: 1~-q-l3 ' Work Order Number: 464956 G:}1:)irect Visual: 12751-MNGP-QP-9.201 Rev.~ Exam Surface: Inner Lid Com~onents DSC Number: MNP-61 BTH-1-8-2-01-5 [B'L}ye Penetrant: 12751-MNGP-QP-9 .202 Rev._1_* Drawing No: NUH6 I BTH-4008 Rev. I ILLUMlNATION COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: (aeo~~OG,d-Device Number: ~rooi e 4 3 :l-Brand: Sherwin Date Calibrated: l0.-£5.-l~ Date Calibrated: /0* 5*l:l Penetrant: KOl7 Batch: :? t 5.-8 5'-1 Calibration Due Date: to-, 6 .. t t.l Calibration Due Date: LO* 5 * /':/_ Remover: KOl9 Batch: 3L'1.
S '2 Developer:
D350 Batch: S II
117 l VT PT Weld No Weld Gauge Foot Accept or Examiner Date Foot Surface. Acceptor Date Note Candles Reject Initials Candles Temperature Reject Examiner Weld I I Inner Top Cover To Shell:

N/A NIA NIA NIA NIA NIA NIA Fit up& Tack 773 ttcceiT /0* 9.r,, Weld mw1.. Weld 1 Keyway NIA Inner Top Cover 4 773 14ccePi yVf {/J L 10-9-11 773 ) .5 J.18 >4ClelT Y'11 wL /0'* 9,1? To Shell: Lid/Shell . ' Root Weld 4 NIA 773 Ae.cepT f1.itwL )b*C/*/3 773 I 5:/ 0. t1cce111 vV..t .... ,L /0.'q. (,'g Keyway ' . Weld I NIA 77~'? ACC*(3T (()-~-1'3 7 7 .'.< l'-14° A Ctt:Pr 16,°!,13 Inner Top Cover 4 ! Y'vl~ l. M uJ L To Shell Lid/Shell Final Weld 4 NIA 7 7 's AC<:epl ... f'{\w L.... /o-CJ .. ,~ 773 I t.1 oe 11tc.ePT /Vt~ i /0,9*/3 EXAMLNER:
rtl Lcf< t:..t-3, l-ovel/ LEVEL: :fL ~.~'o(J-4~ 1..0.-9-/ 3 Print Name
Signature Date EXAMINER:
LEVEL: -Print Name Signature Date Page 21 of 29 e
12751-MNGP-OPS-01, Rev 0, Attachment 9.3 Page 3 of6 VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE Examination Date: fr> -IO -I "3 Work Orqer Number:
464956 Direct Vi'sual: 12751-MNGP-QP-9
.201 Rev. _Q_ Exam Surface: Ke):'.Wa):'. ComQonents DSC Number: MNP-61 BTH-1-8-2-015 g" Dye Penetrant: 12751-MNGP -QP-9.202 Rev. \ Drawing No: NUH6 I BTH-4008 Rev. I --ILLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Ligl~t* Meter Number: (c,OO 2*0 (a 2 Device Number: ~28Y.32 Brand: Sherwin Date Calibrated: lO-tS"-12 Date Calibrated: tC>-o5-12 Penetrant: K017 Batch: '31S:-Calibration Due Date: 10-tS--I~ Calibration Due Date: lo-oS:-I~ Remover: K019 Batch: '31'\-AS'2 Developer: 0350 Batch: 3\ \-B, I VT PT Weld No Weld Gauge Foot Acceptor Examiner Dale Foot Surface Accept or Examiner Date Note Candles Reject Initials Candles Temperature Reject Initials Weld:Z Siphon Port: 5 N/A NIA NIA NIA N/A NIA Fit up & Tack Weld ,~5" AC(fP1'" l tvl4 lb-10-(3 Weld2 Siphon Port: 5 NIA Root Weld 7~3 ACce.PT ?~3 /d-86 A'lw i. MwL 10-10-1 '1 Acee.AT !O-IU-13 ' Weld2 Siphon Port: 5 NIA -Final Weld ,gs-k<:£PT l.N\4 10-to-1'3 185" 128°F Acr.F.Pt l r(} t( Jo-10-13 EXAMINER: Laffii IV'. 'feQ+eS LEVEL: $ d /VI L/,.A1~** lO-la-13 Print Name V' -I Signature Date EXAMINER: {J[l(e..Ke1
W. /...ove.f{
LEVEL: 1b \M'~"'W.~ 10-ro -1.1' Print Name -~-.ignature Date Page22 of29 e e
12751-MNGP-OPS-Ol, Rev 0, Attachment 9.3 Page 4 of6 VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE Examination Date: tD-LD-13 Work Order Number: 464956 c:g/ Direct Visual: 121s1-MNGP-QP-9.201 Rev.--$JL_ Exam Surface: Ke)'.wa;t Comgonents DSC Number: MNP-61 BTH-1-8-2-015 [3" Dye Penetrant: 1275 1-MNGP -QP-9.202 Rev._L Drawing No: NUH~IBTH-40Q8 Rev. I ILLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: (oCPZ.50 ~2. Device Number: ~2g~3z Brand: Sherwin Date Calibrated: Lo-15-l2-Date Calibrated: lf;)-05-( 2 Penetrant: K017 Batch: 3tS-B54 Calibration Due Date: /t,-IS-ILi Calibration Due Date: , C) -0~ -/I/ Remover: K019 Batch: 3\q-AS<o ' Developer: D3SQ Batch: "2>1}-B,I VT PT Weld No Weld Gauge Foot Acceptor Examiner Date Foot Surface Accept or Examiner Note Candles Reject Initials Candles Temperature Reject Initials Date Weld3 ,4ece.PT /t:'-10-13 Vent Port: 5 NIA 7~3 f\/1.p.J L. NIA NIA NIA NIA NIA Fit up & Tack
Weld i ,b5" IAcc.EPT I N1 Lf ID-10-i 3 Weld3 Vent Port: 5 NIA Root Weld 71P3 -?to 3 iACCe.PT MwL (0 *!D-13 I 3 7° A-ccefT fil. wl-10-10-l:J Weld3 Vent Port: 5 NIA Fin~I Weld 1 lA~ Af'C£PT I Mt/ /0-{0:-13 ,AS-13o°F AaEPT L,vt '-i 1D-IC)*f3 EXAMINER:
Lo. tr~ M YMs LEVEL:~ 'ri_AA Lt.-h /D-/0-t 3 rintName v ./ Siknature Date EXAMINER: l~ ,d<&;y w. Lovell LEVEL: ;r( ~~.kJ LO-TO -l.::1 Print Name Date *~ Signature Page 23 of29 e 12751-MNGP -OPS-01, Rev O Attachment 9.3 Page 5 of6
VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello---1275 I EXAMINATION METHOD AND PROCEDURE @-1)irect Visual: 12751-MNGP -QP-9.201 Rev.~ [J.-1:>ye Penetrant 12751-MNGP -QP-9.202 Rev. _1 _ Examination Date: Io-ll -13 Work Order Number:__,_46=-4=9-=-5.;..6 ______ _ DSC Number: MNP-61 BTH-1-8-2-015 ILLUMINATION Light Mf:ter Number: (aoo '2.50 Co "'2. Date Calibrated: f0-1 S'-\'~ Calibration Due Date: I0-1 S-I ~eld No Wcld4 Outer Top Cover To Shell: Flt up &Tack Weld . Weld4 Outer Top Cover To Shell: Root Weld Weld4 Outer Top Cover To Shell: Intermediate Weld Weld4 Outer Top Cover
To Shell: Fin.al Weld Weld Note 6 6 6 6 Gauge NIA NIA NIA ~'A COMPONENT TEMPERATURE Device Number: (.coo 2 'a~ 3 2 Date Calibrated:
/o-o~-, 2 Calibration Due Date: /0-05-/ a./ VT Foot Accept or Examiner Date Foot Candles Reject Initials Candles NIA l~S" Aro:J:::,T LMY ltl -II* I~ 1~5 A.cr.Ef>I (JY\ \.f ID-Jl-1 o ,A~ 1RS-Arr~µ-1 I .M\..t \D1\ ... t3 ,es 1J3 ,\cc..ef!.T IJVUA:jL I0*/1-(! ?J.3 LEVEL: 1I-Exam Surface: Outer Lid Components Drawing No: NUH61BTH-4008 Rev.I PENETRANT MATERIAL Brand: Sherwin Penetrant: K017 Batch: 3l~-eE~ Remover: K019 Batch: 3£'1-A S-b Developer: D350 Batch: 3ll-BJ I PT Surface. Accept or Examiner Date Temperature Reject NIA NIA NIA NIA 14S:S°F P<<EPT ' /Y) l1 10-11-13 l'-l~°F AC££PT {JV\4 lo ... \l-t3 I 75'!{ ,4, Ct::.e PT f{} bJ L lo-11-(1 /6-11-1 3 EXAMINER: Lan:t M Yea-ks Print Name EXAMINER: M.,c!<ey t,J. l..ove/( LEVEL: ;fl" Print Name ' . , ' Signature "(It;.~. ~.-:i~ Date /0-11 /.3 gnature Date Page24 of29
e

12751-MNGP-OPS-Ol, Rev 0, Attachment 9.3 Page 6 of 6 VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello---12751 EXAMINATION METHOD ANU PROCEDURE Examination Date: J 0-1 I -f 3 . [!Y'oirect Visual: 12751-MNGP-QP-9 .201 QS Work Order Number: 464956 Rev. --Exam Surface: Outer Lid Comgonents DSC Number: MNP-61 BTH-1-8-2-015 [3"nye Penetrant: 12751-MNGP-QP-9 .202 Rev. l Drawing No: N UH61 BTH-4008 Rev. I --fLLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: ~0256~2 Device Number: t,aoze~3z. Brand: Sherwin Date Calibrated: /0-15-, z Date Calibrated: LfJ. -os -, 2 Penetrant: K017 Batch: 3lS"-B~I./ Calibration Due Date: Lo-1~, l 'I Calibration Due Date: }D-O'S'* J 'I._ Remover: K019 Batch: :31j-A5b Developer: D350 Batch: 3U-87 J VT PT Weld No Weld Gauge Foot Acceptor Examiner Date Foot Surface. Accept or Examiner Date Note Candles Reject Initials Candles Temperature Reject Weld S Test Plug: 6 NIA NIA NIA NIA NIA NIA Install Plµg *1Rs-Ac{r;~ I l.Jv'l t/ /(}-JI-I~ Weld 5 Test Plug: 6 NIA Root Weld 7J3 A.cce-l'J iN'luJ l. l O .:f/-1 7J-3 J9'4b Acee/'! /fl w L 10-/l-13 *, Weld STest Plug: 6 NIA Final Weld. 7J '3 Acc.rPT /Yl.w I-IO*d*/3 7J3 :244° ActePT /Y}WJ...., /0-11-13 EXAMfNER:. la,..~ N\ it4~ S LEVEL: 7L-cL,,,. LO-ll-13 Print Name ign~~ Date EXAMJNER: rD.1 c.i< e.~ &J
Le. veil LEVEL: 1[ }Ct"\* ll -£ 3 ~* ~i Print Name --~:!:>-\Signature . Date Page 25 of29

12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding-61BT/BTH NUHOMS Canisters ATTACHMENT 9.4: Fit up /High-Low/
Depth Record T DSC Serial Number MNP-61BTH-1-B-2-0l5 depth 112" min 4 }¥ut punch marks are tD be made as references !01 ongoing depth measurements. They are 1D be located appro:it 90 degrees apart. .. Record Flush if wetd cap is flush or higher Record the Measuring Equipment used: Depth Measurements for Weld Weld #4 0 degree 90 degree 180 degree . Initial Depth , '7'1 . '37 ,'->3 Root Layer . ") . .{" II ' J-f,' Intennediate Layer .12,;-, 725° ., ".172 Final Crown * / j3 .01s-* I.Z.3 NOTE: "NIA" all of the sections that do not apply. Page26 of29 270 degree .,3-i . '/f4 * 'l. (-:l .oss e 12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding-61BT/BTH NUHOMS Canisters ATTACHMENT 9.5 Page 1 of 3 Field Comment and/or Repair Log WELD REP AIR LOG Additional sheets ma be attached if necessar DSC No o. Welder ID WPS Weld Filler Metal Weld Repair Details and Sketch DSC No ~eld No WPS Weld Filler Metal Weld Repair Details and Sketch DSC No Weld No Welder ID Weld Filler Metal Weld Repair Details and Sketch Page 27 of29 12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding-61BT/BTH NUHOMS Canisters ATTACHMENT 9.5 Page 2 of 3 Field Comment and/or Repair Log ~ELD INFORMA TJON INSPECTION REQUIREMENTS Quality Le,,el \ Const/Design Code Repair No. Repair No. Repair No .. ASME III S ub NB Attribute Drawing/Revision
~ Preheat Minimum Base Material 1 NUH6 1 B T H-4008 Rev. 60F Specification WPS/Rev \terpass Maximum Base Material *l 35 0 F Traceability Backing Ring Pu~ Base Material 2 NI A Specification WPS Verified:: Base Material 2 Traceabilitv Welder Qualification Verified: Hydrogen Check NOT E S: F it Up Inspection Nominal Plate Thickness
~ffective Throat (. J I ~mum orcement \Y /~ pair# Preh~~nterpas s I f.(t [0-\4'-17 Temper ure Root Gap \mit Purge \ Tack VT Only \ Repair# ' Root VT/ ,PT r\ Final VT/PT \ H e lium Leak T es t \ after PT Welder ID \ Repair# Welder ID" \ '\. Filler Metal Type \* Filler Metal Size \ Trace No. \ (Heat/Lot) e \ Page 28 of29 e 12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding-61BT/BTH NUHOMS Canisters ATTACHMENT 9.5: Field Comment and/or Repair Log P 3 f3 a2e 0 ---VT/PT EXAMINATION REPORT Customer ect: Excel/Monticello---12751 EXAMJNATION METHOD AND PROCEDURE Examination Date: Work Order Number: 4956 0 Direct Visual: 12751-MNGP-QP -9.201 Rev. __ Exam Surface: DSC Number: MNP-618~-2-015 D Dye Penetrantl275 I-MNGP-QP-9.202 Rev. --Drawing No: NUH6 I BTH-4008 Rev. I ............ ILLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: Brand: Sherwin -Date Calibrated
Penetrant:
K017 Batch: Calibration Due Date: . . Remover: K019 Batch: Developer: D35Q Batch: VT "-PT Weld No Weld Gauge Foot Accept or Examiner Date ~ot Surface. Accept or Examiner Date Note Candles Reject Initial s dies Temperature Reject '7? -, /0 -11 '-' J EXAMlNER: LEVEL: -Print Name Signature ~re EXAMlNER: LEVEL: -Print Name Signature Da\ Page 29 of29

12751 MNGP OPS 01 R 0 9 3 P 1 f 6 * --* ev , Attachment age 0 Weld Data Sheet Quality Level 12 I DSC Serial No.: MNP-61BTH-1-B-2-016 I Welder Qualification Verified: ~, ... ---* /l-d..._ ,. ---Const/Design Code I ASME Ill Sub NB I WPS/Rev: SS-8-M-TN Rev /{) & SS-8-A-TN Rev 8 I 'WPS Verified:
/YI~ Backing Ring: I NIA I Preheat Minimum: I 60 F I lnterpass Maximum: I 350 F I Drawing/Revision: I NUH6 IBTH-4008 Rev. I r~k!grtlb~iiihffimh¥.~~~~:;;ug~~;;:JiJi;:~~~~llili~mtt;ilifitfui!i~lrr~~~i~1Z:#f;~~t~
~f~~;t~~;s.~~~
t~~]~;~t?.!~~i~~~~i~~ if~tfill6~Jffigiffil~~ ~~i#Jf~:gfiiiij~1[:~mf~~~ l~~~-trJ~1e."t?~~~~fl.~~l[:~~l INSPECTION REQUIREMENTS Attribute Weld# I Weld # 1 Kcyway Weld#2 Weld #3 Weld #4 Weld #5 Hydrogen Check R e quired Required Not Required Not Required Not Required Not Requir e d Fit Up Inspection Required .A R e quir e d Required Required Requir e d Required Preheat Verified tr1 by [Jf-8'7 b y ~() 11./-by C:,Hr qs-b y VI-If 85 by ltJ} /.ZO by e.fJ r 0.060 inch and not to 0.060 inch and no t to Maximum 0.250 inch 0.060 inch 0.060 inch 0.060 inch exce e d the top of the exceed the top of the Re i n forccmcnt shell course. shell course. Preheat/Inter-pass Temp (See WPS) (See WPS) (See WPS) (See WPS) (See WPS) (See WPS) Interpass Verified 9A b y /,[J '1A by 17J} /oP by 9< I\ I b y CJ2 by tJ) J30 by efJ -f'iJ. Interpass Verified b y by by by r~n by by In terpass Verified by by by by ~l/0 by /8 by VT Fit up Requir e d Required Required Required Required Required . Initiate Attachment 9.3 Required Requir e d Required Required R_equired Required Initiate Attachment 9.4 Not Requ i red Not Required Not Required Not Required Required No t Required Tack VT Only Required Required Required Required Required Required Root VT /PT Required R e quired Required Requir e d Required Required Filler Pass VT/PT NIA NIA NIA NIA Required N I A At Flus/,: Complete Not Requ i red Not R e quir e d Not Required Not Requ i red R e quired Not Required Attachment 9.4 Welding Supervisor sign Required R e quired Requi r ed Required R e quired Required off, prior to NDE Final VT /PT Required Required Required Required Required Required Helium Leak Test Required Required Required Required Not Required Not Required Welder ID BM/8 -// BM-II BM-/ I BM-l i BM-// BM-fl Welder ID BM-tf:3 BM-;'j BM-BM-BM-if.~ BM-Filler Metal Type ER308. E R308 ER308 ER308 ER308 ER308 Filler Meta l Size (See WPS) (See WPS) (See WPS) (See WPS) (See WPS) (See WPS) Trace No (Heat/Lot) 527221/XF9689 52722 I/XF9689 737880/CT or DT 9 023 73 7880/CT o r DT902 3 527221/XF9689 737880/CT or DT9023 Trace No (Heat/Lot) 7 3 7880/CT or D T 90 2 3 Page20 of29
e 12751-MNGP-OPS-01, Rev 0, Attachment 9.3 Page 2 of6 VT/PT EXAMINATION Customer/Project:
Excel/Monticello---12 7 51 EXAMINATION METHOD AND PROCEDURE Examination Date: JQ-jlc,-!3 Work Order Number:__,_4=64-'-'9'-"5'""'6 _______ _ 0 Direct Visual: 12751-MNGP-QP-9.201 Rev.-1Zi_ Exam Surface: Inner Lid Components DSC Number: MNP-61BTH-1-B-2-016 ILLUMINATION Light Meter Number: (ooo :250 it, 2 Date Calibrated: 1 0-l 5 -l '2 Calibration Due Date: IC>-l S -l Gauge Weld No Weld Note Weld 1 Inner Top Cover To Shell: NIA NIA Fit up& Tack Weld Weld 1 Keyway Inner Top Cover 4 NIA To Shell: Lid/Shell Root Weld 4 NIA Weld 1
Keyway Inner Top Cover 4 NIA To Shell Lid/Shell Fina l Weld 4 NIA EXAMINER:
Lo.rel/ IV\. 'iea.:fe.s Print Name Foot Candles EXAMINER:

-Print Name [3' Dye Penetrant: I 2751-MNGP -QP-9.202 Rev. _J__ Drawing No: NUH6 J BTH-4008 Rev. I COMPONENT TEMPERATURE Device Number: (i, 00 2 <a~ "32. Date Calibrated: _ __._1..,,.0'--*-'0"'-""S_-_l:....'2 ___ _ Calibration Due Date: l 0-O S"* l*Y VT Accept or Reject LEVEL: Z LEVEL: Examiner Init i als Date Page 21 of 29 Foot Candles NIA Signature PENETRANT MATERIAL Brand: Penetrant: Remover: Developer: Surface. Temperature NIA \olo° F Sherwin KOl7 Batch: K O l9 Batch: D350 Batch: PT Acceptor Reject NIA 315" -Bs:t-1 3 1 9-As<:, 3fl .. Exam i ner NIA Bil ..
I Oate NIA l tr l~-13 J Q-ll,-t 3 Date D ate

*

12751-MNGP-OPS-Ol, Rev 0, Attachment 9.3 Page 3 of 6

VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE Examination Date: 16-(, -l 3 Work Order Number: 464956 [J{Direct Visual: 12751-MNGP-QP-9 .201 Rev. ¢ Exam Surface: Ke~a)'.'. Com12onents DSC Number: MNP-61 BTH-1-8-2-016 ~Dye Penetrant: 1 2 751-MNGP-QP-9 .202 Rev. _I_ Drawing No: N!JH§lBTH-400~ Rev. I l~LUMINATIO~ COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: &>oo 2 5" o "c.. Device Number: "0028~ 32 Brand: Sherw i n Date Calibrated: Jo-1-s-12 Date Calibrated
JD -05"-12 Penetrant:
K017 Batch: 3l5-B64 Calibration Due , Date: ,~-,s-14 Calibration Due Date: /()_-OS-lt/ Remover: K019 Batch: 3\ll-A5 h Developer: D350 Batch: 31l-B"71 VT PT Weld No Weld Gauge Foot Accept or Examiner Date Foot Surface Accept or Examiner Date Note Candles Reject Initials Candles Temperature Reject Initials Weldl Siphon Port: s* NIA NIA NIA NIA NIA NIA Fit up & Tack Weld 54Co Acr.EP1 L fY'\..f 16-1 1-1~ Weld2 Siphon Port: 5 NIA Root We l d 5 4(., ~C.~PT }0-17-(3 5t../ C-, 13 t°F Acr~PT lmY { .N'\ L( Jo-1,-13 Weld2 Siphon Port: 5 NIA Final Weld S't./b Arrr=PT I ft1U SL/lo 13 /n °F Ac.(£PT /o-/7-/3 l.JYl Lf f (:)-/7-( 3 EXAMINER: Lo.~ 'iea.-1-es LEVEL: '2b--P4 ;'I-/_0-/1-13. Print Name. Date ' EXAMIN~R: LEVEL: -Print Name Signature Date Page 22 of29
e 12751-MNGP-OPS-01, Rev 0, Attachment 9.3 Page 4 of6

I VT/PT EXAMINATION REPORT CustomerlProj ect: Excel/Monticello---1275 1 EXAMINATION METHOD AND PROCEDURE Examination Date: i o-L --:1. -t3 Work Order Number: 464956 [3' Direct Visual: 12751-MNGP-Q P-9.201 Rev. Exam Surface: Keyway Comgonents DSC Number: MNP-61BTH-1-B-2-016 B Dye Penetrant:
1 2 751-MNGP-QP-9.20 2 Rev._J_ Drawing No: NUH61BTH-4008 Rev.I ILLUMINATION COMPPNENT TEMPERATURE PENETRANT MATERIAL Light Met e r Number: &,Do 25Qfn2 Device Number: G,co 3Z. Brand: Sherwin Date Calibrated: lb-IS-r2. Date Calibrated: J_Q-05-12.. Penetrant: K017 Batch: 31 S-B5'-J Calibration Due Date: tD-J5-LY. Calibration Due Date: LO-Q~-l 11 Remover: K019 Batch: 3 1 'i -A S" b Developer: 0350 Batch: 311-B,I VT PT Weld No Weld Gauge Foot Accept or Examiner Date Foot Surface Accept or Examiner Date Note Candle s Reject Initials Candles Temperature Reject Initials Weld3 Vent Port: 5 NIA NIA NIA NIA NIA NIA Fit up & Tack Weld 5t4(o lt\ru-yJ i M l..f I D-\1-\3> Weld 3 Vent Port: 5 NIA Root Weld 54Co ACCEPT I .IY\ t/ lln-11-13 51./(:, t3~°F ~(.{,6PT ( N1 lf It.~ 17-13 Weld3 Vent Port: 5 NIA Final Weld ~Yb AccE?-r lo-,-,_ 1, At.IL IL/A°F IArrA)r LM.l.\ lmll ltJ-11-/3 EXAMINER: Lari~ 'le,rles LEVEL: 'j[_ d, Io -l ]-13 Print Name Signature Date EXAMINER: LEVEL: --Print Name Signature Date Page23 of29

12 7 51-MNGP-OPS-01, Rev O Attachment 9.3 Page 5 of6 * -VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE Examination Date: lo-r,* 1'3 Work Order Number: 464956 [3' Direct Visual: 12751-MNGP-QP-9.201 Rev.~ Exam Surface: Outer Lid ComQonents DSC Number: MNP-61 BTH-1-8-2-016 g Dye Penetrant 12751-MNGP -QP-9.2 02 Rev._l_ Drawing No: NUH6 I BTH-4008 Rev , I ILLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: {o.00 2.5"()_ &, Z Device Number: Coci>'Z. 4 3 2. Brand: Sherwin Date Calibrated: Jo-1S* l'2. Date Calibrated: /o-o~* 12 Penetrant: K017 Batch: 3tS-~S"~ Calibration Due Date: f 0* I~* (Lj Calibration Due Date: io-os-{'I Remover: K019 Batch: 31't-As1o Developer: D350 Batch: 3ll-B71 VT PT Weld No Weld Gauge Foot Acceptor Examiner Date Foot Surface. Accept or Examiner Date Note Candles Reject Initials Candles Temperature Reject Weld4 Outer Top Cover 6 . NIA NIA NIA NIA NIA NIA To Shell: Fit up ~Lj(o ACCEPT £.ft,'-( ln-11~13 & Tack Weld Weld4 Outu Top Cover 6 NIA IJ<<.F.VJ To S h ell: Root ~LJC, C Mt.4 \O-n+:: 5Lf~ IL/'-1°/:' IAN*~Pr t0-1"1-(3 We l d LMl.f. Weld4 Outer Top Cover To Shell: 6 NIA Intermediate l539 Weld Aceevr (JV\ t{_ lO-n-13 53q /4CJ<>F l4c..a:PT I t'Yl !/ /0-/7-1'3 Weld4 Zco*t.t'l Outer Top Cover 6 ~<<>Z.~1 3/ To Shell: Final V"'\/ 1011/J 53'( ?kc.EPr LM-Lf /017*/3 53Cf 1 I Ste °F 4u:PT uYi"-f /0-17-,3 Weld . EXAMINER: Larr~ fY\. Yea:les LEVEL: 7£_ d_ _ AA /j~ )()-/7-13 -I 1 Signature Print Name Date EXAMINER: LEVEL: --Print Name Signature Date Page 24 of29

12751-MNGP-OPS-01, Rev 0, Attachment 9.3 Page 6 of6

VT/PT EXAMINATION REPORT Customer/Project
Excel/Monticello--]
2751 EXAMINATION METHOD AND PROCEDURE Examination Date: Work Order Number: 464956 ~irect Visual: 1 2 75 1-MNGP-QP-9 .2 01 Rev .__l!i_ Exam Surface: Outer Lid Com12onents DSC Number: MNP-61 BTH-1-B-2-016 [¥bye P e netrant: 1 2 7 5 1-MNGP-QP-9.2 02 Rev. -'-Drawing No: N!JHfi 1BTH-40QI:! Rev. I ILLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: '200 250 lo 2 Device Number: ~00 2 8 3 Z Brand: Sherwin Dat e C a librated: LO-JS-/2 Date C a librated: LO-OS"-12.. Penetrant: KO l 7 Batch: 31 s--BSL/ Calibration Due Date: /0-/5-/L/ Calibration Due Date: /C 11/ Remover: K0 1 9 Batch: 3 ,q-A s-'=, Developer: D350 Batch: 31{-B,1 VT PT Weld No Weld Gauge Foot Accept or Examiner Date Foot Surface. Accept or Examiner Date Note Candles Reject Initials Candles Temperature Reject Weld STest Plug: 6 NIA NIA NIA NIA N/A NIA Install Plug 53'1 Accd'r LM'1 1,0-n-, 3 Weld 5Test Plug: 6 N/A S-3<j Acc£PT Root Weld 5"3'1 ArrEPT UY\ L/ 10-17*13 /81°F LM r/ l<J-17-13 Weld 5Test Plug: 6 NIA Final.Weld 53, ACL£f"r LA-f.f /0*17-13 53 t::t /7gcF ACU3PT V'f',~ ~6-J?-J '3 ' EXAMINER: la~ M, f_e_g_-1,. s LEV E L:.7L.. ~-t_o-17-13 Print Name Date EXAMINER: : LEV E L: --Print Name Signature Date Page 25 of29
* . e 12 7 51-MNGP-OPS-01 RO: Spent Fuel Cask Welding-61BT/BTH NUHOMS Canisters ATTACHMENT 9.4: F i t up/ High-Low/ Depth Record DSC Serial Number MNP-61BTH-I-B 016 41.a)out pUllch mar is me 1D be made as referen~ fo1 ongoing depth rne11Surement.. They are ID be appro:t 90 degrees apmL Record the Measuing Eq1J1)11leri used: Weld #4 Initial Depth Root Layer li,Yi' 2ooicr /~ 111-r,oozo)J r~ . r, 0.,1-1'l Depth Measurements for Weld b degree 90 degree 180 degree .c,39 * (p'3S. .(Qs ;i *. 1-/]'f

Jf(p(p ,1137 Intennediate Layer

22LJ , °)_/ '1 .,2./ft, Final Crown I :32

J 21 , 12(3 NOTE: "NIA" all of the sections that do not apply . Page 26 of29 270 degree . t,:z.~

ifOPl ... .17~ <> 07'1

--12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding-61BT/BTH NUHOMS Canisters ATTACHMENT 9.5 Page 1 of 3 Field Comment and/or Repair Log Note: Major Weld Repair is defined in Section 8.10.3. WELD REPAIR LOG (Additional sheets may be attached if necessary)
DSC No Weld No. Welder ID WPS Weld Filler Metal Weld Repair Details and Sket~b .. DSC No Weld No Welder ID WPS Weld Filler Metal Weld Repai~ Details and Sketch DSC No Weld No Welder ID WPS Weld Filler Metal-Weld Repair Details and Sketch . , Page 27 of29
12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding-61BT/BTH NUHOMS Canisters AIT ACHMENT 9.5 .Page 2 of3 Field Comment *and/or Repair Log WELD lNFORMATION INSPECTION REQUlREMENTS Quality Level Const/Design Code Repair No. Repair No. Repair No. ASME Ill Sub NB Attribute Drawing/Revision Preheat Minimum Base Material I NUH6 I BTH-4008 Rev. I 60F Specification WPS/Rev lnterpass Maximum Base Material 1 350 F Traceability Backing Ring Purge Base Material 2 . NIA Specification WPS Verified::
Base* Material 2 Traceability Welder Qualification Verified: Hydrogen Check NOTES: Fit Up Inspection Nominal Plate Thickness Effective Throat Maximum Reinforcement pair# Preheat/lnterpass Temperature Root Gap Limit Purge -Tack VT Only Repair# Root VT/ PT Final VT/ PT Helium Leak Test after PT Welder ID Repair# Welder ID Filler Metal Type -Filler Metal Size Trace No. (Heat/Lot) -Page 28 of29 ..
*

12751-MNGP-OPS-01 RO: Spent Fuel Cask Welding-61BT/BTH NUHOMS Canisters ATTACHMENT 9.5: Field Comment and/or Repair Log P 3 f3 age 0 VT/PT EXAMINATION REPORT Customer/Project:
Excel/Monticello---12751 EXAMINATION METHOD AND PROCEDURE Examination Date: Work Order Number: 464956 D Direct Visual: 12751-MNG~-QP-9.201 Rev. __ Exam Surface: DSC Number: MNP-61 BTH-1-8-2-016 D Dye Penetrant1275 1-MNGP-QP-9.202 Rev. --Draw i ng No: NUH6 J BTH-4008 Rev. I ILLUMINATION COMPONENT TEMPERATURE PENETRANT MATERIAL Light Meter Number: Device Number: Brand: Sherwin Date Cal ibr:ated: Date Calibrated: Penetrant: K017 Batch: Calibration Due Date: Calibration Due Date: Remover: KOI9 Batch: Developer: D350 Batch: VT PT Weld No Weld Gauge Foot Accept or Examiner Foot Surface. Accept or Note Candles Reject Initials Date Candles Temperature Reject Examiner Date EXAMINER: LEVEL: --' Print Name Signature Date EXAMINER: LEVEL: --Print Name Signature Date ' Page 29 of29 ENCL0SURE14 MARKUP PAGES FROM EXEMPTION REQUEST FOR RAI ST-2 AFFECTED PAGES OF EXEMPTION REQUEST COVER LETTER 2 of 4 3 of 4 AFFECTED PAGES OF EXEMPTION REQUEST , ENCLOSURE 1 2 of 75 28 of 75 29 of 75 32 of 75 34 of 75 35 of 75 37 of 75 9 pages follow Document Control Desk Page 2 License Issued under 10 CFR 72.210, for the Storage of Spent Fuel" , dated November 4 , 2013 (ADAMS Accession No. ML13310A568)
7) NSPM letter to NRC , "Project Plan Progress Toward Restoring 10 CFR 72 Compliance to Dry Shielded Canisters Designated 11 through 16", dated June 6 , 2017 Pursuant to 10 CFR 72.7 , " Specific Exemptions
" , the Northern States Power Company, a Minnesota corporation (NSPM), doing business as Xcel Energy, requests an exemption from the requirements of 10 CFR 72.212(a)(2), 10 CFR 72.212(b)(3), 10 CFR 72.212(b)(5)(i), 10 CFR 72.212(b)(11), and 10 CFR 72.214 for five NUHOMS Dry Shielded Canisters (DSCs) designated DSCs 11-15 due to nonconforming dye penetrant (PT) examinations performed during the loading campa i gn that started in September 2013. These nonconforming PT examinations are the subject of a Confirmatory Order (Reference 1 ). Please note that an earlier submittal (Reference
2) was made to request an exemption for all s i x canisters (designated DSCs 11-16) that were originally found to be nonconforming.
However, that request was withdrawn (Reference
3) in 2014. Pursuant to the NSPM corrective action program and the Confirmatory Order, DSC 16 was restored to compliance with the regulations by an exemption granted in June 2016 (Reference 4). Currently , the subject five DSCs are loaded into Horizontal Storage Modules (HSMs), as reported in References 5 and 6. The enclosed exemption request is structured as discussed in NSPM's most recent project plan update (Reference 7). strain ,....._ ______ __, In summary , the exemption request has determined that the integr" of the 1eld closure welds for DSCs 11-1 5 can be reasonably assured even though the Te nical Spec 1cation required dye penetrant examinations were nonconforming.
The fuel cl ding integrity, eld design, materials, welding process, tests performed, adequate stress margin in the we to accommodate maximized representative flaws, and demonstration of additional stress margins to address any remaining uncertainties demonstrates the closure weld integrity of DSCs 11-15 is sufficient to ensure that the affected closure welds will continue to perform their design basis functions over the service lifetime of these canisters. In addition, the exemption request demonstrates that the consequences of non-mechanistic weld failures are very low and that the overall risk to the public is also very low. Enclosure 1 provides the exemption request including a description of the basis and technical just i fication for granting an exemption. The exemption request provides the basis and technical justification to permit continued storage of DSCs 11-15 in their respective HSMs. Enclosure 2 provides Structural Integrity Associates, Inc. (SIA) Report 1301415.301 , " Development of an Analys i s Based Stress Allowable Reduction Factor (SARF) -Dry Shielded Canister (DSC) Top Closure Weldments", which provides an analysis-based Stress Allowable Reduction Factor, which supports the values used in the analysis of record for the NU HOMS 61 BTH model canister , the canister design used at the Monticello Nuclear Generating Plant. Document Control Desk Page 3 Enclosure 3 provides SIA Report 700388.401 , "Evaluation of the Welds on DSCs 11-15", which evaluates the available weld head video, general area video, documentation, and DSC 16 Phased Array Ultrasonic Testing (PAUT) results determining that the types of flaws and extent of flaw distributions found in DSC 16 are considered representative of the comparable closure welds of DSCs 11-15. Enclosure 4 provides AREVA Calculation 11042-0204, "Allowable Flaw Size Evaluation in the Inner Top Cover Plate Closure Weld for DSC #16" , which calculates a maximum allowable flaw size in the Inner Top Cover Plate (ITCP) weld for DSC 16 assuming a weld depth of 0.25 inches. Enclosure 5 provides AREVA Calculation 11042-0205, "618TH ITCP and [Outer Top Cover Plate] OTCP Closure Weld Flaw Evaluation", which evaluates the DSC 16 closure weld flaw indications discovered by PAUT examination. This calculation uses the limit load analysis methodology of the American Society of Mechanical Engineers (ASME) Operation and Maintenance Code, Section Ill. Additionally, elastic-plastic analyses were performed to document the actual predicted strains in the welds and to demonstrate adequate margin against plastic collapse. Enclosure 6 provides AREVA Calculation 11042-0207, "NU HOMS 618TH Type 1 DSC ITCP and OTCP Maximum Weld Flaw Evaluation", which evaluates the DSCs 11-15 closure welds per ASME Section Ill criteria using design bases loads with flaws located based on DSC 16 PAUT results and maximi d flaws are close to acceptable design limits. strain Enclosure 7 pr
es A EVA Calculation 11042-0208, "Site Specific NUHOMS 618TH Type 1 ITCP and O CP Margin Evaluation for Maximum Weld Flaw", which evaluates the &tFess margins for DSCs 1-15 with the maximized flaws in the ITCP and OTCP closure welds based on as-loaded temp ature and pressure conditions.
Enclosure 8 provides ARE Calculation 11042-0209, "Site Specific NU HOMS 618TH Type 1 DSC ITCP and OTC Margin Evaluation for Maximum Weld Flaw with Side Drop Loads", which evaluates the stress margins for DSCs 11-15 with the maximized flaws in the ITCP and OTCP closure welds based on the as-loaded temperature and pressure conditions and site-specific side-drop loads. Enclosure 9 provides AREVA Calculation 11042-0400, "Site-Specific Thermal Evaluation of 618TH Type 1 DSCs Stored in HSM-H at Monticello Nuclear Generating Plant", which evaluates the bounding DSC shell temperature and internal pressure during storage based on as-loaded conditions. This calculation provides an input to the calculations submitted as Enclosures 7 and 8, which are used to establish the actual safety margins based on the as-loaded conditions of DSCs 11-15. This calculation provided in Enclosure 9 contains proprietary information and is sought to be withheld from public disclosure in accordance with 10 CFR 2.390. As the entirety of the calculation is considered to be the intellectual property of AREVA, a redacted version of the calculation has not been included. The affidavit for the enclosure is provided in Enclosure
12.
L-MT 053 Enclosure 1 NSPM is not a credible phenomenon. Service-induced flaws under normal and off-normal conditions of storage are not credible.
c. Material and Welding Process: Shell, lid, and weld filler quality requirements were met. Austenitic stainless steels do not have a nil ductility trans i tion temperature and thus the weld can sustain " large" flaws without a concern for flaw growth. Weld process qualification, welder qualification , and the automated welding processes designed for the specific application all ensure a quality weld. d. Tests Performed: In-process visual inspections of welds performed by the welders , Quality Control (QC) visual examination (VT) inspections of fit-ups and welds and the vacuum hold , helium pressure and helium leak test all ensured confinement and quality of the welds. k?7 ~..._s_tr_a_in
____ e. Adequate Stre et M argin in Welds to Accommodate Flaws: St r ess margins were demonstrated by structural analysis using an analysis based stress allowance reduction factor, theoretically bounding full circumferential flaws, and a structural analysis assuming flaw distributions conservatively derived from Phased Array Ultrasonic Testing (PAUT) examination of DSC 16. A review of the weld head video , general area video, welding records, and DSC 16 was performed and determined that the indications found on DSC 16 are representative of those that might be found on DSCs 11-15. Additionally , it was determined that the same bounding analyses performed for DSC 16 should provide similar conservative results for the closure welds on DSCs 11-15. Regardless , further analyses have been performed to maximize the flaws located based on DSC 16 PAUT to demonstrate substantial margin to account for potential flaw uncertainties. These analyses are provided in Enclosures 2 through e,. < !6 I f. Additional Stress Margins in Welds: DSCs 11-15 heat loads and site-specific side drop conditions were applied to demonstrate additional margin exists and is ava i lable to account for any remaining flaw uncertainty that may exist. These analyses are provided in Enclosures e throu~h 9. ~7 I 2. Low Dose Consequences for a DSC in Storage: Notwithstanding the weld integrity demonstrated for DSCs 11-15 , a reasonable assurance of safety is further supported by a radiological dose analysis. The dose analysis concludes that a non-mechanistic failure of the weld and a postulated release would result in no danger to the public as the dose consequences would be far below the regulatory limit of 5 rem Total Effective Dose Equivalent (TEDE) (Note: unless otherwise specified , all dose quantities identified in this Enclosu r e are TEDE). The dose analysis is provided in Enclosure
10. 3. Low Risk to the Public: Notwithstanding the weld integrity demonstrated for DSCs 11-15, a reasonable assurance of safety is further supported by a probabilistic risk assessment (PRA). This assessment concludes the risk of a potential Latent Cancer Fatality (LCF) for all five DSCs with noncompliant PT exams over a 20 year storage period is extremely unlikely (1.39E-12 LCF) and the risk associated with the Page 2 of 75 L-MT-17-053 Enclosure 1 NSPM examination (i.e., PT) vs. volumetric examination technique (i.e., PAUT), and the potential for subsurface flaws to exist when only surface examinations are performed. Additionally, the maximum weld deposit depth for intermediate layers is kept smaller than the critical flaw depth in accordance with ISG-15. b. Methodology for Assessing DSC 11-15 Closure Weld Structural Functions Previous analyses that demonstrated stress margins for the DSC 16 closure welds were provided to the NRC in Reference 6.7 , and again in Enclosures 2 , 4 and 5 to this letter. These evaluations i ncluded (1) structural analysis using an analysis-based stress allowance reduction factor and theoretically-bounding full-circumferential flaws, and (2) a structural analysis assum i ng flaw distributions conservatively derived from the DSC 16 PAUT examination. To further evaluate the structural integrity of DSCs 11-15, evaluations were performed to determine if it was reasonable to expect that the types and extent of flaw distributions found in DSC 16 could be used to represent the comparable closure welds of DSCs 11-15 (Enclosure

3) and add i tional analysis was performed using design basis loads with flaws located based on DSC 16 PAUT and maximized such that the weld flaws reached close to acceptable design limits (Enclosure 6). Following these evaluations , additional analysis was performed using site-specific heat load and side drop conditions to demonstrate additional margin exists and is ava i lable to account for any remaining uncertainty related to the welds (Enclosures 7 and 8). A description of each of these evaluations follows: i. DSC 16 Closure Weld Flaw Evaluation

a. Analysis-Based Structural Analysis with Theoretical Flaws For the OTCP , the original design basis calculations dete r mined critical flaw sizes. Per ISG-15 , the stress reduction factor of partial penetration welds with PT examination is 0.80. Since these welds are noncompliant with the PT requirements , the weld reduction factor is reduced beyond 0.80 based on a set of theoretical flaw distributions that might conceivably have gone undetected during DSC closure weld examinations.
Thus , an analys i s-based stress allowable reduction factor of 0.7 was calculated. The analysis is included in its entirety in Enclosure
2. Since the original design basis critical flaw calculations already uses a reduction factor of 0.7 , the original analysis remains applicable.
These design basis analyses determined for a 360° circumferential flaw , an allowable flaw depth of 0.19 inch and 0.29 inch could exist for surface connected and sub-surface flaws respectively. The flaw sizes determined by these calculations bound any of the indications found on DSC 16 by PAUT. For the ITCP weld , the calculation provided in Enclosure 4 documents the c r itical flaw size based on the maximum radial stresses in the welds due to Page 28 of 75 L-MT-17-053 Enclosure 1 NSPM design loads. The analysis calculates the critical flaw size for a weld size of 0.25 inch per the PAUT results for DSC 16 (which indicated a distance between the root and crown at the canister wall from 0.25 to 0.40 inches) in lieu of the design thickness of 3/16 inch. This increased weld size is considered equally applicable to DSCs 11-15 based on the joint configuration and same welding process application. The calculation assumes both a buried (sub-surface) and a surface flaw. A 360° circumferential flaw was modeled and the critical flaw depth was calculated using ASME Section XI criteria. The critical flaw depth determined , 0.15 inches , is larger than the half of the weld which would exceed the typical weld layer. The original design basis calculation already considered a 0.7 stress reduction factor; therefore , no further analyses were performed to show that all component stresses remain below the stress allowable limits. The flaw sizes determined by these calculations bound any of the indications found on DSC 16 by PAUT. Therefore, these calculations demonstrate that sufficient margin is included in the we l ds and indicates a reasonable expectation of satisfactory performance of each DSC for the design service l i fetime of the DSC. b. Structural Analysis Using PAUT Flaw Distribution: Enclosure 5 A structural analysis was performed assuming flaw stributions conservatively derived from DSC 16 PAUT exa
ation by applying bounding flaw heights and modeling the intermittent fla as full circumferential.
This structural analysis is fully described in and concludes that DSC 16 will continue to perform its function due to the adequate margins for the accident pressure and drop loads with the presence of the ITCP and OTCP weld flaw indications documented in the PAUT exam. ii. Applicability of DSC 16 PAUT to DSCs 11-15 As part of the original extent of condition review , weld head videos were reviewed by SIA in 2014. This review determined that good welding practices were used. However , the video also shows infrequent indications of areas where the potential for small weld flaws could exist. Both inner and outer cover plate closure welds were recorded in some cases , but the video coverage was incomplete for all weld beads. Specifically, the video review covered the ITCP root and cover weld layers; the OTCP tack, root , intermediate and cover weld layers for DSCs 13 and 16; and the OTCP tack , root, intermediate and cover weld layers for DSCs 12 , 14 and 15. No weld head video was available for DSC 11. The DSC 16 outer closure weld was concluded to be the most vulnerable to potential defects , because a greater frequency of irregular surface conditions was generated during welding. Page 29 of 75 L-MT-17-053 Enclosure 1 Figure 6 -LOF Between Bead 3 and Bead 4 NSPM !Strain ) iii. Structural Analyses of DSCs 11-15 for Maximum Weld Flaw and Stress Margin Evaluation
a. Maximized Representative Flaw Evaluation Notwithstanding the conclusions reached by SIA that the bounding flaws used to model the DSC 16 PAUT results would be reasonable to assume for all canisters (DSCs 11-15), NSPM contracted with AREVA to evaluate DSCs 11-15 closure welds per ASM E Section 111 criter i a. The analysis used design basis loads with flaws located based on DSC 16 PAUT results and maximized such that the weld flaws reach close to acceptable design limits. The purpose of this analysis was to address uncertainties related to the potential flaws that may be present in DSCs 11-15 by demonstrating the maximum flaws that could be shown to still meet the code limits. The analysis is provided in its entirety in Enclosure

6. All of the applicable design bases loading conditions are considered in accordance with the requirements of ASME Section Ill Subsection NB. Similar to previous analysis , the uncertainties in the PAUT exam i nation were accounted for by using a 0.8 reduction factor on the l i mit load and elastic plastic analyses. The DSC design used in the calculation was typical of MNGP DSCs 11-16 , and the modeled baseline flaws were representative of those indications Page 32 of 75 L-MT-17-053 Enclosure 1 NSPM one weld bead. These flaws were located based on DSC 16 PAUT results and are considered representative locations for DSCs 11-15. < !Strain I b. Additional Stress Margins in Welds Notwithstanding the conclusions re che by SIA that the bounding flaws used to model the DSC 16 PAUT results would e reasonable to assume for DSCs 11-15, and the analysis by A EVA sh wing large flaws that could still be shown to meet the code limits , ditional a lyses were performed by AREVA to demonstrate additional stress margin xists using site-specific heat loads and side drop conditions.
The purpose of th e analyses was to address any remaining uncertainties related to pote
I flaws that may be present in DSCs 11-15 by demonstrating additional stress margins. These analyses are provided in their entirety in Enclosures 7 and 8. Enclosure 7 evaluates the margins for DSCs 11-15 with the maximum flaws in the ITCP and OTCP closure welds based on the as-loaded temperature and pressure conditions.
Load Limit Analysis: The lower bound collapse pressure for Service Level A/B criteria was found to be 98.4 psi which is greater than the limiting pressure of 60 psi. Therefore the Service Level A/B criterion is satisfied. The lower bound collapse pressure for Service Level D criteria was found to be 144.1 psi which is greater than the limiting pressure of 90.2 psi. The lower bound collapse G-Load for Service Level D side drop criteria was found to be 204 g which is greater than the limiting G-Load of 104 g. Therefore the Service Level D criterion is satisfied. Elastic-Plastic Analyses: The peak strains predicted by the elastic-plastic analyses for the bounding Service Level D event are shown to remain below the material ductility limits (28%) at the specified loading conditions, and also at one and a half times the specified loads, with a minimum margin of safety of 1.86. Therefore the elastic plastic analyses criteria are satisfied. Enclosure 8 evaluates margins for the DSCs with the maximum flaws in the ITCP and OTCP closure welds based on the as-loaded temperature and pressure conditions , and the site specific side drop loads (i.e., actual approach slab parameters). Limit Load Analysis: The lower bound collapse G-Load for Service Level D side drop criteria was found to be 204 g which is greater than the limiting G-Load of 104 g. Therefore the Service Level D criterion is satisfied. Elastic-Plastic Analysis: The peak strain values remain below the material ductility limits at the specified loading conditions with a minimum margin of Page 34 of 75 L_ L-MT-17-053 Enclosure 1 NSPM safety of 3.83. Therefore the elastic plastic analyses criteria are satisfied. It should be noted that with the as-loaded temperature and pressure conditions, and site specific side drop loads the margin of safety is higher than the margin of safety in similar analyses for DSC 16 (3.83 vs. 3.60). Additionally, the analysis used to determine the bounding DSC shell temperature and internal pressure during storage operations based on the as-loaded configuration of DSCs 11-15 is included as Enclosure
9. 3.7 Conclusion Based on the technical assessment presented previously, the proposed activity does not adversely affect the criticality safety, shielding/radiological safety , heat removal, confinement integrity or structural support functions of DSCs 11-15 as described in the UFSAR. In summary, the requested exemption results in continued safe ope r"'" ra=t=io~n~o=f~----, the MNGP ISFSI. strain ,__-----.----~
The integrity of the field closure welds for DSCs 11-15 can be assured with confidenc even though the TS-required PT examinations were nonconforming. The fuel cladd" g integrity, weld design , materials , welding process, tests performed, adequate stress margins in the welds to accommodate the maximized representative flaws, and demonstration of additional stress margins to address any remaining uncerta i nties demonstrates the closure weld integrity of DSCs 11-15 is sufficient to ensure that the affected closure welds will continue to perform their design basis functions over the service lifetime of these canisters. Application of the alternatives described in Section 4.3 would increase the radiological dose to workers , generate additional radiological waste, potentially create foreign material concerns and i ncrease other operational risks to the station without a commensurate increase in safety as compared to rece i pt of the exemption request. 4.0 Basis for App r oval The proposed exemption is limited in scope in that it only relates to compliance with the inspection of certain field closure welds. The proposed exemption involves a change in compliance , but no physical change to the canister design , and no change to the canister materials or the loading operation. In this regard , the proposed activity cannot affect the frequency of any accident caused by the loading process (e.g., dropped TC or jammed DSC). It has no bearing on the frequency of natural events (flood , earthquake , tornado) that are natural phenomena. Therefore, the proposed activity does not result in an increase in the frequency of any previously evaluated accident. Furthermore, since the exemption does not affect the canister design and procedures this ensures that no new type of malfunct i on would be created. The Technical Assessment herein provides the basis for the conclusion that a reasonable assurance of safety exists for the service lifetime of DSCs 11-15. Even though regulations Page 35 of 75 L-MT 053 Enclosure 1 NSPM c. Material and Welding Process: The shell, lid, and weld filler quality requirements were met. Austenitic stainless steels do not have a nil ductility transition temperature and thus the weld can sustain " large" flaws without a concern for flaw growth. Weld process qualification, welder qualification, and automated welding processes designed for the specific application all ensure a quality weld. d. Tests Performed: The welding procedures used for this campaign required welder in-process inspections prior to each QC NOE examination to ensure a weld surface free of coarse ripples , arc strikes, coarse grooves, overlap, abrupt ridges and valleys, cracks, porosity or fish-eyes, lack of fusion , lack of penetration , undercut in excess of 1/32 inch or root concavity that results in less than minimum wa l l. QC VTs were required for fit-up and tack welds of the ITCP , siphon cover , vent cover , and OTCP joints. QC VTs were also required prior to the PT exams on the ITCP, siphon cover, vent cover, TPP and OTCP e. ~------~ root and cover weld layers, and the OTCP intermediate we Strain .___ ______ _, flaws and a structural ana l ys i s assuming flaw
tributions conservatively derived from PAUT examination.
A review weld head video, general area video, welding records and DSC 16 P was performed that has determ i ned that the indications fou on DSC 16 are representative of those that may be found on DSCs 11-and that the same bounding analyses performed for DSC 16 shoul rovide for similar conservative results for the other DSC closure welds egardless, additional analysis has been performed to maximi the flaws located based on DSC 16 PAUT to demonstrate sub ntial margin to account for potential flaw uncerta i nties. f. Additional Stress Margins in Welds: DSCs 11-15 heat loads and site-specific side drop conditions were appl i ed to demonstrate addit i onal weld margin exists and is available to account for any rema i ning flaw uncertainty that may exist. 2. Low Dose Consequences for a DSC in Storage: Notwithstanding the weld integrity that i s demonstrated for DSCs 11-15, a reasonable assurance of safety is further supported by a radiological dose analysis which concludes that a mechanistic fa i lure of the weld and a postulated release would result in dose consequences that would be far be l ow the regulatory limit (5 rem). The dose analysis is provided as Enclosure
10. In general , the analysis used the guidance contained within NUREG-1567 (and other relevant guidance documents as described in Enclosure

10) to develop the dose acceptance criteria , source term isotopes of concern , isotopic fuel rod activity released from the rods to the DSC, DSC deposition rates , and calculated Page 37 of 75}}

v t e Letter Sequence Response to RAI
EPID:L-2017-LLE-0029, Package: First Request for Additional Information for Review of Exemption Request for Five Nonconforming Dry Shielded Canisters 11 Through 15 (CAC No. 001028, Docket No. 72-58, EPID L-2017-LLE-0029) (Approved, Closed)
Initiation Request, Request Acceptance... Supplement Administration Questions 6 March 2018 6 March 2018 Answers 5 April 2018 Results Approval Other: ML18100A185, ML18100A188, ML18100A190, ML18100A191, ML18100A193, ML18248A121
MONTHYEAR2018-04-05 [Table View]

L-MT-18-013, Response to Request for Additional Information Regarding Exemption Request for Nonconforming Dye Penetrant Examinations of Dry Shielded Canisters (Dscs) 11 Through 15

Text

1.0 INTRODUCTION

C. PROCEDURE

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