Text

Submittal of Reports Associated with Results of Post-Irradiation Examination of Global Nuclear Fuel GE14i Isotope Test Assembly
	ML12335A072
Person / Time
Site:	Clinton
Issue date:	11/29/2012
From:	Simpson P; Exelon Generation Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
Shared Package
ML123350097	List: ML12335A072;
References
	RIS-12-204
	Download: ML12335A072 (83)
	v • d • e

300 Winfield Road arrenvdle. IL 60555 Adenow Exolon Generation Attachments I and 3 contain proprietary information. Withhold from public disclosure under 10 CFR 2.390. When separated from Attachments 1 and 3, this cover letter is decontrolled.

RS-12-204 November 29, 2012 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 Clinton Power Station, Unit 1 Facility Operating License No. NPF-62 NRC Docket No. 50-461

Subject:

Reports Associated with Results of Post-Irradiation Examination (PIE) of Global Nuclear Fuel (GNF) GE14i Isotope Test Assembly (ITA)

References:

1. Letter from C. S. Goodwin (U - S. NRC) to C. G. Pardee (Exelon Generation Company, LLC), "Clinton Power Station, Unit No.1 -Issuance of Amendment Re: Request to Modify Facility Operating License in Support of the Use of Isotope Test Assemblies (TAC NO

ME1643)," dated January 15, 2010

2. Letter from D. M. Gullott (Exelon Generation Company, LLC) to U. S S. NRC, "Reports Associated with Results of Post-Irradiation Examination (PIE) of Global Nuclear Fuel (GNF) GE14i Isotope Test Assembly (ITA)," dated May 14, 2012 This letter completes the reporting requirements associated with the PIE results, of a GNF GE14i ITA bundle, performed by GNF for Clinton Power Station. The reporting of this information is required by the NRC as discussed in Condition 11, of the Conditions and Limitations section, in Reference 1 Reference 2 reported the results of the poolside visual and poolside combined instrumentation measurement system (COINS) examination requir t

Th i i l

f 30 657 2000 Office 1

Exel()n Generation 4300 Winfield Road Warrenvllle,lL 60555 630 657 2000 Office Attachments 1 and 3 contain proprietary information. Withhold from public disclosure under 10 CFR 2.390. When separated from Attachments 1 and 3, this cover letter is decontrolled.

RS-12-204 November 29,2012 U. S. Nuclear Regulatory Commission A TIN: Document Control Desk Washington, DC 20555 Clinton Power Station, Unit 1 Facility Operating License No. NPF-62 NRC Docket No. 50-461

Subject:

Reports Associated with Results of Post-Irradiation Examination (PIE) of Global Nuclear Fuel (GNF) GE14i Isotope Test Assembly (ITA)

References:

1. Letter from C. S. Goodwin (U. S. NRC) to C. G. Pardee (Exelon Generation Company, LLC), "Clinton Power Station, Unit No.1 -Issuance of Amendment Re: Request to Modify Facility Operating License in Support of the Use of Isotope Test Assemblies (TAC NO. ME1643)," dated January 15, 2010

2. Letter from D. M. Gullott (Exelon Generation Company, LLC) to u. S. NRC, "Reports Associated with Results of Post-Irradiation Examination (PIE) of Global Nuclear Fuel (GNF) GE14i Isotope Test Assembly (ITA)," dated May 14, 2012 This letter completes the reporting requirements associated with the PIE results, of a GNF GE14i ITA bundle, performed by GNF for Clinton Power Station. The reporting of this information is required by the NRC as discussed in Condition 11, of the Conditions and Limitations section, in Reference 1*

Reference 2 reported the results of the poolside visual and poolside combined instrumentation measurement system (COINS) examination requirements. The remaining results, of the poolside gamma scan measurements and segmented rod hot cell destructive examination, are included in attachments 1 through 4 of this letter.

Attachments 1 and 3 contain proprietary information. Withhold from public disclosure under 10 CFR 2.390. When separated from Attachments 1 and 3, this cover letter is decontrolled.

1 Exel()n Generation 4300 Winfield Road Warrenvllle,lL 60555 630 657 2000 Office Attachments 1 and 3 contain proprietary information. Withhold from public disclosure under 10 CFR 2.390. When separated from Attachments 1 and 3, this cover letter is decontrolled.

RS-12-204 November 29,2012 U. S. Nuclear Regulatory Commission A TIN: Document Control Desk Washington, DC 20555 Clinton Power Station, Unit 1 Facility Operating License No. NPF-62 NRC Docket No. 50-461

Subject:

Reports Associated with Results of Post-Irradiation Examination (PIE) of Global Nuclear Fuel (GNF) GE14i Isotope Test Assembly (ITA)

References:

1. Letter from C. S. Goodwin (U. S. NRC) to C. G. Pardee (Exelon Generation Company, LLC), "Clinton Power Station, Unit No.1 -Issuance of Amendment Re: Request to Modify Facility Operating License in Support of the Use of Isotope Test Assemblies (TAC NO. ME1643)," dated January 15, 2010

2. Letter from D. M. Gullott (Exelon Generation Company, LLC) to u. S. NRC, "Reports Associated with Results of Post-Irradiation Examination (PIE) of Global Nuclear Fuel (GNF) GE14i Isotope Test Assembly (ITA)," dated May 14, 2012 This letter completes the reporting requirements associated with the PIE results, of a GNF GE14i ITA bundle, performed by GNF for Clinton Power Station. The reporting of this information is required by the NRC as discussed in Condition 11, of the Conditions and Limitations section, in Reference 1*

Reference 2 reported the results of the poolside visual and poolside combined instrumentation measurement system (COINS) examination requirements. The remaining results, of the poolside gamma scan measurements and segmented rod hot cell destructive examination, are included in attachments 1 through 4 of this letter.

Attachments 1 and 3 contain proprietary information. Withhold from public disclosure under 10 CFR 2.390. When separated from Attachments 1 and 3, this cover letter is decontrolled.

November 29, 2012 U. S. Nuclear Regulatory Commission Page 2 Attachments I and 3 contain proprietary information. Withhold from public disclosure under 10 CFR 2.390. When separated from Attachments I and 3, this cover letter is decontrolled.

This submittal is subdivided as follows.

provides a proprietary version, including an affidavit from GNF attesting to the proprietary nature of the information, of the results of a hot cell destructive examination of GE14i rod segments.

provides a non-proprietary version of the results of a hot cell destructive examination of GE14i rod segments.

provides a proprietary version, including an affidavit from GNF attesting to the proprietary nature of the information, of the results for the GE14i Pin-by-Pin gamma scan measurements.

provides a non-proprietary version of the results for the GE14i Pin-by-Pin gamma scan measurements.

provides the affidavit from GNF attesting to the proprietary nature of NEDC-33787P

provides the affidavit from GNF attesting to the proprietary nature of NEDC-33784P.

Portions of the information in Attachments 1 and 3 are proprietary to GNF, and are supported by affidavits signed by GNF, the owner of the information. The affidavits, provided in Attachment 5 and 6, set forth the basis on which the information may be withheld from public disclosure by the NRC and addresses, with specificity, the considerations listed in paragraph (b)(4) of 10 CFR 2.390, "Public inspections, exemptions, requests for withholding." Accordingly, it is respectfully requested that the information be withheld from public disclosure in accordance with 10 CFR 2.390. Non-proprietary versions of the information contained in Attachments 1 and 3 are provided in Attachments 2 and 4, respectively.

There are no regulatory commitments contained in this letter. Should you have any questions concerning this letter, please contact Mr. Thomas J. Griffith at (630) 657-2818.

e iectf^ullly, Patrick R. Simpson Manager - Licensing Attachments:

November 29,2012 U. S. Nuclear Regulatory Commission Page 2 Attachments 1 and 3 contain proprietary information. Withhold from public disclosure under 10 CFR 2.390. When separated from Attachments 1 and 3, this cover letter is decontrolled.

This submittal is subdivided as follows.

provides a proprietary version, including an affidavit from GNF attesting to the proprietary nature of the information, of the results of a hot cell destructive examination of GE14i rod segments.

provides a non-proprietary version of the results of a hot cell destructive examination of GE14i rod segments.

provides a proprietary version, including an affidavit from GNF attesting to the proprietary nature of the information, of the results for the GE14i Pin-by-Pin gamma scan measurements.

provides a non-proprietary version of the results for the GE14i Pin-by-Pin gamma scan measurements.

provides the affidavit from GNF attesting to the proprietary nature of NEDC-33787P

provides the affidavit from GNF attesting to the proprietary nature of NEDC-33784P.

Portions of the information in Attachments 1 and 3 are proprietary to GNF, and are supported by affidavits signed by GNF, the owner of the information. The affidavits, provided in Attachment 5 and 6, set forth the basis on which the information may be withheld from public disclosure by the NRC and addresses, with specificity, the considerations listed in paragraph (b)(4) of 10 CFR 2.390, "Public inspections, exemptions, requests for withholding." Accordingly, it is respectfully requested that the information be withheld from public disclosure in accordance with 10 CFR 2.390. Non-proprietary versions of the information contained in Attachments 1 and 3 are provided in Attachments 2 and 4, respectively.

There are no regulatory commitments contained in this letter. Should you have any questions concerning this letter, please contact Mr. Thomas J. Griffith at (630) 657-2818.

Rem R.

Patrick R. Simpson Manager - licensing Attachments:

1. Hot Cell Inspection of Clinton Cycle 13 GE14i Rod Segments - Proprietary

2. Hot Cell Inspection of Clinton Cycle 13 GE 14i Rod Segments - Non-Proprietary

3. Clinton GE14i Pin-by-Pin Gamma Scan Report - Proprietary 4. Clinton GE 14i Pin-by-Pin Gamma Scan Report - Non-Proprietary

5. Affidavit for NEDC-33787P Revision 0

6. Affidavit for NEDC-33784P Revision 0 Attachments 1 and 3 contain proprietary information. Withhold from public disclosure under 10 CFR 2.390. When separated from Attachments 1 and 3, this cover letter is decontrolled.

November 29,2012 U. S. Nuclear Regulatory Commission Page 2 Attachments 1 and 3 contain proprietary information. Withhold from public disclosure under 10 CFR 2.390. When separated from Attachments 1 and 3, this cover letter is decontrolled.

This submittal is subdivided as follows.

provides a proprietary version, including an affidavit from GNF attesting to the proprietary nature of the information, of the results of a hot cell destructive examination of GE14i rod segments.

provides a non-proprietary version of the results of a hot cell destructive examination of GE14i rod segments.

provides a proprietary version, including an affidavit from GNF attesting to the proprietary nature of the information, of the results for the GE14i Pin-by-Pin gamma scan measurements.

provides a non-proprietary version of the results for the GE14i Pin-by-Pin gamma scan measurements.

provides the affidavit from GNF attesting to the proprietary nature of NEDC-33787P

provides the affidavit from GNF attesting to the proprietary nature of NEDC-33784P.

Portions of the information in Attachments 1 and 3 are proprietary to GNF, and are supported by affidavits signed by GNF, the owner of the information. The affidavits, provided in Attachment 5 and 6, set forth the basis on which the information may be withheld from public disclosure by the NRC and addresses, with specificity, the considerations listed in paragraph (b)(4) of 10 CFR 2.390, "Public inspections, exemptions, requests for withholding." Accordingly, it is respectfully requested that the information be withheld from public disclosure in accordance with 10 CFR 2.390. Non-proprietary versions of the information contained in Attachments 1 and 3 are provided in Attachments 2 and 4, respectively.

There are no regulatory commitments contained in this letter. Should you have any questions concerning this letter, please contact Mr. Thomas J. Griffith at (630) 657-2818.

Rem R.

Patrick R. Simpson Manager - licensing Attachments:

1. Hot Cell Inspection of Clinton Cycle 13 GE14i Rod Segments - Proprietary

2. Hot Cell Inspection of Clinton Cycle 13 GE 14i Rod Segments - Non-Proprietary

3. Clinton GE14i Pin-by-Pin Gamma Scan Report - Proprietary 4. Clinton GE 14i Pin-by-Pin Gamma Scan Report - Non-Proprietary

5. Affidavit for NEDC-33787P Revision 0

6. Affidavit for NEDC-33784P Revision 0 Attachments 1 and 3 contain proprietary information. Withhold from public disclosure under 10 CFR 2.390. When separated from Attachments 1 and 3, this cover letter is decontrolled.

ATTACHMENT 2 Hot Cell Inspection of Clinton Cycle 13 GE14i Rod Segments Non-Proprietary ATTACHMENT 2 Hot Cell Inspection of Clinton Cycle 13 GE14i Rod Segments Non*Proprietary ATTACHMENT 2 Hot Cell Inspection of Clinton Cycle 13 GE14i Rod Segments Non*Proprietary

GNr' Global Nuclear Fuel Global Nuclear Fuel A Joint Venture of GE. Toshiba, & Hitachi NEDO-33787 Revision 0 DRF Section 0000-0153-4519 R1 November 2012 NON-PROPRIETARY INFORMATION-CLASS I (PUBLIC)

Hot Cell Inspection of Clinton Cycle 13 GE14i Rod Segments GN-Global Nuclear Fue.l Global Nuclear Fuel A Joint Venture of GE. Toshiba. & Hitachi NEDO-33787 Revision 0 DRF Section 0000-0153-4519 R1 November 2012 NON-PROPRIETARY INFORMATION - CLASS I (PUBLIC)

Hot Cell Inspection of Clinton Cycle 13 GE14i Rod Segments Copyright 2012 Global Nuclear Fuel - Americas, LLC All Rights Reserved GN-Global Nuclear Fue.l Global Nuclear Fuel A Joint Venture of GE. Toshiba. & Hitachi NEDO-33787 Revision 0 DRF Section 0000-0153-4519 R1 November 2012 NON-PROPRIETARY INFORMATION - CLASS I (PUBLIC)

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

INFORMATION NOTICE This is a non-proprietary version of the document NEDC-33787P, Revision 0, which has the proprietary information removed.

Portions of the document that have been removed are indicated by an open and closed bracket as shown here ((

)).

IMPORTANT NOTICE REGARDING THE CONTENTS OF THIS REPORT PLEASE READ CAREFULLY The design, engineering, and other information contained in this document is furnished solely for the purpose(s) stated in the transmittal letter.

The use of this information by anyone for any purpose other than that for which it is intended is not authorized; and with respect to any unauthorized use, GNF makes no representation or warranty, and assumes no liability as to the completeness, accuracy, or usefulness of the information contained in this document.

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

INFORMATION NOTICE This is a non-proprietary version of the document NEDC-33787P, Revision 0, which has the proprietary infonnation removed.

Portions of the document that have been removed are indicated by an open and closed bracket as shown here ((

)).

IMPORTANT NOTICE REGARDING THE CONTENTS OF THIS REPORT PLEASE READ CAREFULLY The design, engineering, and oth~r infonnation contained in this document is furnished solely for the purpose(s) stated in the transmittal letter. The use of this infonnation by anyone for any purpose other than that for which it is intended is not authorized; and with respect to any unauthorized use, GNF makes no representation or warranty, and assumes no liability as to the completeness, accuracy, or usefulness of the infonnation contained in this document.

11 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

INFORMATION NOTICE This is a non-proprietary version of the document NEDC-33787P, Revision 0, which has the proprietary infonnation removed.

Portions of the document that have been removed are indicated by an open and closed bracket as shown here ((

)).

IMPORTANT NOTICE REGARDING THE CONTENTS OF THIS REPORT PLEASE READ CAREFULLY The design, engineering, and oth~r infonnation contained in this document is furnished solely for the purpose(s) stated in the transmittal letter. The use of this infonnation by anyone for any purpose other than that for which it is intended is not authorized; and with respect to any unauthorized use, GNF makes no representation or warranty, and assumes no liability as to the completeness, accuracy, or usefulness of the infonnation contained in this document.

11

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

TABLE OF CONTENTS Acronyms and Abbreviations..........................................................................................................v Abstract........................................................................................................................................ vi

1. Introduction..............................................................................................................................1-1

2. GE14i Segmented Isotope Rod Description............................................................................ 2-1

3. Mechanical Inspection............................................................................................................. 3-1 3.1 Visual Inspection of Intact As-Received Segments........................................................ 3-1 3.2 Visual Inspection of Inner Surface of Outer Tube.......................................................... 3-1 3.3 Visual Inspection of Centering Peg for Inner Capsule................................................... 3-1 3.4 Visual Inspection of Intact Inner Capsule...................................................................... 3-2 3.5 Visual Inspection of Inner Surface of Inner Capsule Tube............................................ 3-2 3.6 Visual Inspection of Canister and Cobalt Targets.......................................................... 3-3 3.7 Optical Microscopy of Outer Tube and Inner Tube Samples......................................... 3-3

4. Summary and Conclusions...................................................................................................... 4-1 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (public)

TABLE OF CONTENTS Acronyms and Abbreviations.......................................................................................................... v Abstract.......................................................................................................................................... vi

1. Introduction.............................................................................................................................. 1-1

2. GE14i Segmented Isotope Rod Description............................................................................ 2-1

3. Mechanical Inspection............................................................................................................. 3-1 3.1 Visual Inspection of Intact As-Received Segments........................................................ 3-1 3.2 Visual Inspection of Inner Surface of Outer Tube.......................................................... 3-1 3.3 Visual Inspection of Centering Peg for Inner Capsule................................................... 3-1 3.4 Visual Inspection of Intact Inner Capsule...................................................................... 3-2 3.5 Visual Inspection of Inner Surface of Inner Capsule Tube............................................ 3-2 3.6 Visual Inspection of Canister and Cobalt Targets.......................................................... 3-3 3.7 Optical Microscopy of Outer Tube and Inner Tube Samples......................................... 3-3

4. Summary and Conclusions................................................................................................... '.. 4-1 iii NEDO-33787 Revision 0 Non-Proprietary Information - Class I (public)

TABLE OF CONTENTS Acronyms and Abbreviations.......................................................................................................... v Abstract.......................................................................................................................................... vi

1. Introduction.............................................................................................................................. 1-1

2. GE14i Segmented Isotope Rod Description............................................................................ 2-1

3. Mechanical Inspection............................................................................................................. 3-1 3.1 Visual Inspection of Intact As-Received Segments........................................................ 3-1 3.2 Visual Inspection of Inner Surface of Outer Tube.......................................................... 3-1 3.3 Visual Inspection of Centering Peg for Inner Capsule................................................... 3-1 3.4 Visual Inspection of Intact Inner Capsule...................................................................... 3-2 3.5 Visual Inspection of Inner Surface of Inner Capsule Tube............................................ 3-2 3.6 Visual Inspection of Canister and Cobalt Targets.......................................................... 3-3 3.7 Optical Microscopy of Outer Tube and Inner Tube Samples......................................... 3-3

4. Summary and Conclusions................................................................................................... '.. 4-1 iii

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

LIST OF FIGURES Figure 1 Visual Inspection of As-Received Segment 9 (S/N 0166CBT)............................. 3-5 Figure 2 Visual Inspection of As-Received Segment 9 (S/N 0166CBT)............................. 3-6 Figure 3 Visual Inspection of As-Received Segment 9 (S/N 0166CBT)............................. 3-7 Figure 4 Visual Inspection of As-Received Segment 6 (S/N 0327CBT)............................. 3-8 Figure 5 Visual Inspection of As-Received Segment 6 (S/N 0327CBT)............................. 3-9 Figure 6 Visual Inspection of As-Received Segment 6 (S/N 0327CBT)........................... 3-10 Figure 7 Visual Inspection of As-Received Segment 3 (S/N 0315CBT)........................... 3-11 Figure 8 Visual Inspection of As-Received Segment 2 (S/N 0436CBT)........................... 3-12 Figure 9 Visual Inspection of As-Received Segment 2 (S/N 0436CBT)........................... 3-13 Figure 10 Visual Inspection of As-Received Segment 2 (S/N 0436CBT)........................... 3-14 Figure 11 Visual Inspection of Inner Surfaces of Outer Tubes from Segments 2, 6, and 9............................................................................................................................ 3-15 Figure 12 Visual Inspection of Capsule Centering Pegs from Segments 2, 6, and 9...........3-16 Figure 13 Visual Inspection of Inner Capsules from Segments 2, 6, and 9.........................3-17 Figure 14 Visual Inspection of Inner Capsules from Segments 2, 6, and 9......................... 3-18 Figure 15 Visual Inspection of Inner Surfaces of Inner Capsules from Segments 2, 6, and 9..................................................................................................................... 3-19 Figure 16 Extraction of Targets Utilizing Canister Extraction Tool.................................... 3-20 Figure 17 Visual Inspection of Extracted Targets from Segments 2, 6, and 9..................... 3-21 Figure 18 Visual Inspection of Canisters from Segments 2, 6, and 9.................................. 3-22 Figure 19 Stuck Target in Canister from Segment 0166CBT.............................................. 3-23 Figure 20 Calibration Scale at Original Magnifications of 100, 250, and 500X Magnifications; Smallest Division is 20 Microns................................................ 3-24 Figure 21 Polished Metallographic Cross-Sections from Segment 6 Outer Tube Showing ((

))............ 3-25 Figure 22 Etched Metallographic Cross-Section from Segment 6 Outer Tube Showing

((

)).................................................................... 3-26 Figure 23 Polished Metallographic Cross-Sections from Segment 9 Inner Tube Showing ((

)).............................................................. *....... 3-27 Figure 24 Polished Metallographic Cross-Sections from Segment 9 Inner Tube Showing ((

))...................................*..................*............*3-28 Figure 25 Etched Metallographic Cross-Section from Segment 9 Inner Tube Showing IT

))

3 29 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

LIST OF FIGURES Visual Inspection of As-Received Segment 9 (SIN 0166CBT)............................. 3-5 Visual Inspection of As-Received Segment 9 (SIN 0 166CBT)............................. 3-6 Visual Inspection of As-Received Segment 9 (SIN 0 166CBT)............................. 3-7 Visual Inspection of As-Received Segment 6 (SIN 0327CBT)............................. 3-8 Visual Inspection of As-Received Segment 6 (SIN 0327CBT)............................. 3-9 Visual Inspection of As-Received. Segment 6 (SIN 0327CBT)........................... 3-10 Visual Inspection of As-Received Segment 3 (SIN 0315CBT)........................... 3-11 Visual Inspection of As-Received Segment 2 (SIN 0436CBT)........................... 3-12 Visual Inspection of As-Received Segment 2 (SIN 0436CBT)........................... 3-13 Visual Inspection of As-Received Segment 2 (SIN 0436CBT)........................... 3-14 Visual Inspection of Inner Surfaces of Outer Tubes from Segments 2, 6, and 9............................................................................................................................ 3-15 Visual Inspection of Capsule Centering Pegs from Segments 2, 6, and 9........... 3-16 Visual Inspection of Inner Capsules from Segments 2, 6, and 9......................... 3-17 Visual Inspection of Inner Capsules from Segments 2, 6, and 9......................... 3-18 Visual Inspection of Inner Surfaces of Inner Capsules from Segments 2, 6, and 9..................................................................................................................... 3-19 Extraction of Targets Utilizing Canister Extraction Tool.................................... 3-20 Visual Inspection of Extracted Targets from Segments 2,6, and 9..................... 3-21 Visual Inspection of Canisters from Segments 2, 6, and 9.................................. 3-22 Stuck Target in Canister from Segment 0166CBT.............................................. 3-23 Calibration Scale at Original Magnifications of 100, 250, and 500X Magnifications; Smallest Division is 20 Microns................................................ 3-24 Polished Metallographic Cross-Sections from Segment 6 Outer Tube Showing ((

))............ 3-25 Etched Metallographic Cross-Section from Segment 6 Outer Tube Showing

((

)).................................................................... 3-26 Polished Metallographic Cross-Sections from Segment 9 Inner Tube Showing ((

))...................................................................... 3-27 Polished Metallographic Cross-Sections from Segment 9 Inner Tube Showing ((

))...................................................................... 3-28 Etched Metallo grap'hic Cross-Section from Segment 9 Inner Tube Showing

((

)).................................................................... 3-29 IV Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

LIST OF FIGURES Visual Inspection of As-Received Segment 9 (SIN 0166CBT)............................. 3-5 Visual Inspection of As-Received Segment 9 (SIN 0 166CBT)............................. 3-6 Visual Inspection of As-Received Segment 9 (SIN 0 166CBT)............................. 3-7 Visual Inspection of As-Received Segment 6 (SIN 0327CBT)............................. 3-8 Visual Inspection of As-Received Segment 6 (SIN 0327CBT)............................. 3-9 Visual Inspection of As-Received. Segment 6 (SIN 0327CBT)........................... 3-10 Visual Inspection of As-Received Segment 3 (SIN 0315CBT)........................... 3-11 Visual Inspection of As-Received Segment 2 (SIN 0436CBT)........................... 3-12 Visual Inspection of As-Received Segment 2 (SIN 0436CBT)........................... 3-13 Visual Inspection of As-Received Segment 2 (SIN 0436CBT)........................... 3-14 Visual Inspection of Inner Surfaces of Outer Tubes from Segments 2, 6, and 9............................................................................................................................ 3-15 Visual Inspection of Capsule Centering Pegs from Segments 2, 6, and 9........... 3-16 Visual Inspection of Inner Capsules from Segments 2, 6, and 9......................... 3-17 Visual Inspection of Inner Capsules from Segments 2, 6, and 9......................... 3-18 Visual Inspection of Inner Surfaces of Inner Capsules from Segments 2, 6, and 9..................................................................................................................... 3-19 Extraction of Targets Utilizing Canister Extraction Tool.................................... 3-20 Visual Inspection of Extracted Targets from Segments 2,6, and 9..................... 3-21 Visual Inspection of Canisters from Segments 2, 6, and 9.................................. 3-22 Stuck Target in Canister from Segment 0166CBT.............................................. 3-23 Calibration Scale at Original Magnifications of 100, 250, and 500X Magnifications; Smallest Division is 20 Microns................................................ 3-24 Polished Metallographic Cross-Sections from Segment 6 Outer Tube Showing ((

))............ 3-25 Etched Metallographic Cross-Section from Segment 6 Outer Tube Showing

((

)).................................................................... 3-26 Polished Metallographic Cross-Sections from Segment 9 Inner Tube Showing ((

))...................................................................... 3-27 Polished Metallographic Cross-Sections from Segment 9 Inner Tube Showing ((

))...................................................................... 3-28 Etched Metallo grap'hic Cross-Section from Segment 9 Inner Tube Showing

((

)).................................................................... 3-29 IV

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

ACRONYMS AND ABBREVIATIONS Term Definition BWR Boiling Water Reactor GEH GE Hitachi Nuclear Energy GNF Global Nuclear Fuel GWd/MT GigaWatt - Day/ Metric Ton ID Inside Diameter ITA Isotope Test Assembly OD Outside Diameter S/N Serial Number VNC Vallecitos Nuclear Center Term BWR GEH GNF GWdlMT ID ITA OD SIN VNC NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

ACRONYMS AND ABBREVIATIONS Definition Boiling Water Reactor GE Hitachi Nuclear Energy Global Nuclear Fuel GigaWatt-Day/Metric Ton Inside Diameter Isotope Test Assembly Outside Diameter Serial Number Vallecitos Nuclear Center v

Term BWR GEH GNF GWdlMT ID ITA OD SIN VNC NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

ACRONYMS AND ABBREVIATIONS Definition Boiling Water Reactor GE Hitachi Nuclear Energy Global Nuclear Fuel GigaWatt-Day/Metric Ton Inside Diameter Isotope Test Assembly Outside Diameter Serial Number Vallecitos Nuclear Center v

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

ABSTRACT Nine rod segments from GE14i bundle JYK690 in the ((

)) pin position were retrieved from Clinton Power Station for non-destructive and destructive post-irradiation examination at the GEH Vallecitos Nuclear Center hot cells in Sunol, California. The ((

)) segmented isotope rod was irradiated for one full cycle during Cycle 13 in an assembly that achieved a

((

)) GWd/MT burnup. The examination focused on characterizing the rod segments' mechanical integrity.

The examination confirmed that the GE 14i segmented isotope rod exhibited excellent mechanical integrity and performed as intended.

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

ABSTRACT Nine rod segments from GE14i bundle JYK690 in the ((

)) pin position were retrieved from Clinton Power Station for non-destructive and destructive post-irradiation examination at the GEH Vallecitos Nuclear Center hot cells in Sunol, California. The ((

)) segmented isotope rod was irradiated for one full cycle during Cycle 13 in an assembly that achieved a

((

)) GWdJMT burnup. The examination focused on characterizing the rod segments' mechanical integrity.

The examination confirmed that the GE 14i segmented isotope rod exhibited excellent mechanical integrity and performed as intended.

vi NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

ABSTRACT Nine rod segments from GE14i bundle JYK690 in the ((

)) pin position were retrieved from Clinton Power Station for non-destructive and destructive post-irradiation examination at the GEH Vallecitos Nuclear Center hot cells in Sunol, California. The ((

)) segmented isotope rod was irradiated for one full cycle during Cycle 13 in an assembly that achieved a

((

)) GWdJMT burnup. The examination focused on characterizing the rod segments' mechanical integrity.

The examination confirmed that the GE 14i segmented isotope rod exhibited excellent mechanical integrity and performed as intended.

vi

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

1. INTRODUCTION Segmented isotope rods containing nickel-coated, reactor grade Co-59 isotope targets have been irradiated in a GE14i Isotope Test Assembly (ITA) for one 23-month cycle in Clinton's Cycle 13. A single segmented isotope rod (Serial Number (S/N) 0196CBT) was retrieved from the ((

)) position in the assembly JYK690 and delivered to the GE Hitachi Nuclear Energy (GEH) Vallecitos Nuclear Center (VNC) located in Sunol, California for post-irradiation examination. The JYK690 bundle achieved an exposure of ((

)) GWd/MT.

The objectives of the examination were to confirm successful performance of the segmented isotope rod design by verifying that the physical integrity of the segmented isotope rods has been maintained and has not degraded during irradiation and to demonstrate the functionality and process of retrieving and removing cobalt targets from the segmented isotope rods. This report provides a summary of the hot cell work performed to complete these objectives.

The following sections of the report summarize details of the hot cell examination that included visual inspection of all intact rod segments, visual inspection of the three segments that were opened, removal of cobalt targets from the three segments that were opened, and optical microscopy of selected components.

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

1. INTRODUCTION Segmented isotope rods containing nickel-coated, reactor grade Co-59 isotope targets have been irradiated in a GE14i Isotope Test Assembly (ITA) for one 23-month cycle in Clinton's Cycle 13. A single segmented isotope rod (Serial Number (SIN) 0196CBT) was retrieved from the ((

)) position in the assembly JYK690 and delivered to the GE Hitachi Nuclear Energy (GEH) Vallecitos Nuclear Center (VNC) located in Sunol, California for post-irradiation examination. The JYK690 bundle achieved an exposure of ((

)) GW dlMT.

The objectives of the examination were to confirm successful performance of the segmented isotope rod design by verifying that the physical integrity of the segmented isotope rods has been maintained and has not degraded during irradiation and to demonstrate the functionality and process of retrieving and removing cobalt targets from the segmented isotope rods. This report provides a summary of the hot cell work performed to complete these objectives.

The following sections of the report summarize details of the hot cell examination that included visual inspection of all intact rod segments, visual inspection of the three segments that were opened, removal of cobalt targets from the three segments that were opened, and optical microscopy of selected components.

1-1 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

1. INTRODUCTION Segmented isotope rods containing nickel-coated, reactor grade Co-59 isotope targets have been irradiated in a GE14i Isotope Test Assembly (ITA) for one 23-month cycle in Clinton's Cycle 13. A single segmented isotope rod (Serial Number (SIN) 0196CBT) was retrieved from the ((

)) position in the assembly JYK690 and delivered to the GE Hitachi Nuclear Energy (GEH) Vallecitos Nuclear Center (VNC) located in Sunol, California for post-irradiation examination. The JYK690 bundle achieved an exposure of ((

)) GW dlMT.

The objectives of the examination were to confirm successful performance of the segmented isotope rod design by verifying that the physical integrity of the segmented isotope rods has been maintained and has not degraded during irradiation and to demonstrate the functionality and process of retrieving and removing cobalt targets from the segmented isotope rods. This report provides a summary of the hot cell work performed to complete these objectives.

The following sections of the report summarize details of the hot cell examination that included visual inspection of all intact rod segments, visual inspection of the three segments that were opened, removal of cobalt targets from the three segments that were opened, and optical microscopy of selected components.

1-1

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

2. GE14I SEGMENTED ISOTOPE ROD DESCRIPTION The segmented isotope rod is comprised of ((

)). The nominal pre-irradiation length of ((

)) inches and the length of ((

)) inches, excluding the portion of the male threaded connector beyond the mating shoulder.

The threaded male connector beyond the mating shoulder lengthens each segment by ((

)) inches. After arrival at VNC, the rod segments were assigned identification numbers, with #1 being at the bottom of the bundle and #9 being at the top of the bundle.

Each rod segment consists of an outer Zircaloy-2 barrier tube ("outer tube") that has ((

)). There is an inner Zircaloy-2 barrier tube within each outer tube ("inner tube").

And there is a Zircaloy-2 canister within each inner tube ("canister"). The canister has ((

)). When the canister is sealed within the inner tube, it is then called an "inner capsule."

NEDO-33787 Revision 0 Non-Proprietary Infonnation - Class I (Public)

2. GE14I SEGMENTED ISOTOPE ROD DESCRIPTION The segmented isotope rod is comprised of ((

)). The nominal pre-irradiation length of ((

)) inches and the length of ((

)) inches, excluding the portion of the male threaded connector beyond the mating shoulder. The threaded male connector beyond the mating shoulder lengthens each segment by ((

)) inches. After arrival at VNC, the rod segments were assigned identification numbers, with #1 being at the bottom of the bundle and #9 being at the top of the bundle.

Each rod segment consists of an outer Zircaloy-2 barrier tube ("outer tube") that has ((

)). There is an inner Zircaloy-2 barrier tube within each outer tube ("inner tube").

And there is a Zircaloy-2 canister within each inner tube ("canister"). The canister has ((

)). When the canister is sealed within the inner tube, it is then called an "inner capsule."

2-1 NEDO-33787 Revision 0 Non-Proprietary Infonnation - Class I (Public)

2. GE14I SEGMENTED ISOTOPE ROD DESCRIPTION The segmented isotope rod is comprised of ((

)). The nominal pre-irradiation length of ((

)) inches and the length of ((

)) inches, excluding the portion of the male threaded connector beyond the mating shoulder. The threaded male connector beyond the mating shoulder lengthens each segment by ((

)) inches. After arrival at VNC, the rod segments were assigned identification numbers, with #1 being at the bottom of the bundle and #9 being at the top of the bundle.

Each rod segment consists of an outer Zircaloy-2 barrier tube ("outer tube") that has ((

)). There is an inner Zircaloy-2 barrier tube within each outer tube ("inner tube").

And there is a Zircaloy-2 canister within each inner tube ("canister"). The canister has ((

)). When the canister is sealed within the inner tube, it is then called an "inner capsule."

2-1

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

3. MECHANICAL INSPECTION This section contains the results of visual inspection of the outer portion of the nine as-received rod segments, visual inspection of the inner components of the three rod segments that were opened, and optical microscopy of sections of the outer tube and inner tube from Segment 6.

3.1 VISUAL INSPECTION OF INTACT AS-RECEIVED SEGMENTS The GE14i segmented isotope rod was received in the disassembled condition without its upper or lower endplug extensions. Each of the nine separate segments was visually inspected in the as-received condition.

Each segment was placed in a slotted tray adjacent to a ruler that had 1 inch major divisions and 0.1 inch minor divisions. The segment was then viewed through a Kollmorgen periscope from top to bottom in 90 degree increments to identify any visible anomalies. A common set of digital photographs were taken of each segment to document the general condition of the threaded connectors and welds on each end, the serial number on the bottom end, and the cladding outer tube in general.

Figures 1 through 10 show the segments in the as-received condition. In general, all segments are in good condition and exhibit ((

3.2 VISUAL INSPECTION OF INNER SURFACE OF OUTER TUBE Four inch long blanks of the outer tube from Segments 2, 6, and 9 were clam-shelled so that the inner surface of the outer tube could be examined.

The blanks were obtained from approximately the middle of the segment for Segments 6 and 9 and near the top of the segment for Segment 2. Photographic documentation of the inner surface is shown in Figure 11. ((

))*

3.3 VISUAL INSPECTION OF CENTERING PEG FOR INNER CAPSULE NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

3. MECHANICAL INSPECTION This section contains the results of visual inspection of the outer portion of the nine as-received rod segments, visual inspection of the inner components of the three rod segments that were opened, and optical microscopy of sections of the outer tube and inner tube from Segment 6.

3.1 VISUAL INSPECTION OF INTACT AS-RECEIVED SEGMENTS The GE14i segmented isotope rod was received in the disassembled condition without its upper or lower endplug extensions. Each of the nine separate segments was visually inspected in the as-received condition. Each segment was placed in a slotted tray adjacent to a ruler that had I inch major divisions and 0.1 inch minor divisions. The segment was then viewed through a Kollmorgen periscope from top to bottom in 90 degree increments to identify any visible anomalies. A common set of digital photographs were taken of each segment to document the general condition of the threaded connectors and welds on each end, the serial number on the bottom end, and the cladding outer tube in general.

Figures 1 through 10 show the segments in the as-received condition. In general, all segments are in good condition and exhibit ((

)).

3.2 VISUAL INSPECTION OF INNER SURFACE OF OUTER TUBE Four inch long blanks of the outer tube from Segments 2, 6, and 9 were clam-shelled so that the inner surface of the outer tube could be examined.

The blanks were obtained from approximately the middle of the segment for Segments 6 and 9 and near the top of the segment for Segment 2. Photographic documentation of the inner surface is shown in Figure 11. ((

)).

3.3 VISUAL INSPECTION OF CENTERING PEG FOR INNER CAPSULE Sectioning of the male threaded connector for Segments 2, 6, and 9 passed through and released a portion of the centering peg that is integral to the outer tube's male and female threaded connectors. ((

)). The condition of the centering pegs is shown in Figure 12. ((

3-1 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

3. MECHANICAL INSPECTION This section contains the results of visual inspection of the outer portion of the nine as-received rod segments, visual inspection of the inner components of the three rod segments that were opened, and optical microscopy of sections of the outer tube and inner tube from Segment 6.

3.1 VISUAL INSPECTION OF INTACT AS-RECEIVED SEGMENTS The GE14i segmented isotope rod was received in the disassembled condition without its upper or lower endplug extensions. Each of the nine separate segments was visually inspected in the as-received condition. Each segment was placed in a slotted tray adjacent to a ruler that had I inch major divisions and 0.1 inch minor divisions. The segment was then viewed through a Kollmorgen periscope from top to bottom in 90 degree increments to identify any visible anomalies. A common set of digital photographs were taken of each segment to document the general condition of the threaded connectors and welds on each end, the serial number on the bottom end, and the cladding outer tube in general.

Figures 1 through 10 show the segments in the as-received condition. In general, all segments are in good condition and exhibit ((

)).

3.2 VISUAL INSPECTION OF INNER SURFACE OF OUTER TUBE Four inch long blanks of the outer tube from Segments 2, 6, and 9 were clam-shelled so that the inner surface of the outer tube could be examined.

The blanks were obtained from approximately the middle of the segment for Segments 6 and 9 and near the top of the segment for Segment 2. Photographic documentation of the inner surface is shown in Figure 11. ((

)).

3.3 VISUAL INSPECTION OF CENTERING PEG FOR INNER CAPSULE Sectioning of the male threaded connector for Segments 2, 6, and 9 passed through and released a portion of the centering peg that is integral to the outer tube's male and female threaded connectors. ((

)). The condition of the centering pegs is shown in Figure 12. ((

3-1

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public) 3.4 VISUAL INSPECTION OF INTACT INNER CAPSULE The inner capsules from Segments 2, 6, and 9 were released from their rod segments by removing the male threaded connector of each segment. Once the segment was opened and the cut surface deburred, the inner capsules easily slid out by tilting the segment. The outer surfaces of the intact inner capsules were then visually inspected. An arbitrary zero degree reference was established by placing a red paint dot near the top of each inner capsule. Each segment was placed in a slotted tray adjacent to a ruler that had 1 inch major divisions and 0.1 inch minor divisions. The capsule was then viewed through a Kollmorgen periscope from top to bottom in 90 degree increments to identify any visible anomalies.

A common set of digital photographs were taken of each capsule in the zero degree orientation to document the general condition of the end caps and welds on each end, and the cladding. Additional photographs were taken of the top and bottom end caps at an angle to view the end cap female threads.

Figures 13 and 14 show the condition of the intact inner capsules. ((

)).

3.5 VISUAL INSPECTION OF INNER SURFACE OF INNER CAPSULE TUBE Four inch long blanks of the inner capsule tube from Segments 2, 6, and 9 were clam-shelled so that the inner surface of the inner capsule tube could be examined. The blanks were obtained from approximately the middle of the segment for all three segments.

Photographic documentation of the inner surface is shown in Figure 15. ((

))*

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public) 3.4 VISUAL INSPECTION OF INTACT INNER CAPSULE

)).

The inner capsules from Segments 2, 6, and 9 were released from their rod segments by removing the male threaded connector of each segment. Once the segment was opened and the cut surface deburred, the inner capsules easily slid out by tilting the segment. The outer surfaces of the intact inner capsules were then visually inspected. An arbitrary zero degree reference was established by placing a red paint dot near the top of each inner capsule. Each segment was placed in a slotted tray adjacent to a ruler that had 1 inch major divisions and 0.1 inch minor divisions. The capsule was then viewed through a Kollmorgen periscope from top to bottom in 90 degree increments to identify any visible anomalies. A c01l1Il1on set of digital photographs were taken of each capsule in the zero degree orientation to document the general condition of the end caps and welds on each end, and the cladding. Additional photographs were taken of the top and bottom end caps at an angle to view the end cap female threads.

Figures 13 and 14 show the condition of the intact inner capsules. ((

)).

3.5 VISUAL INSPECTION OF INNER SURFACE OF INNER CAPSULE TUBE Four inch long blanks of the inner capsule tube from Segments 2, 6, and 9 were clam-shelled so that the inner surface of the inner capsule tube could be examined. The blanks were obtained from approximately the middle of the segment for all three segments.

Photographic documentation of the inner surface is shown in Figure 15. ((

)). Numerous fresh scratches exist on the inner surface of the inner tubing, which were caused by twisting and pulling the tightly held canister to remove it from the inner capsule. The inner surface of Segment 9 ((

)). A small piece of the inner capsule from this segment was examined metallographically to investigate these features and is discussed further in Section 3.7.

3-2 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public) 3.4 VISUAL INSPECTION OF INTACT INNER CAPSULE

)).

The inner capsules from Segments 2, 6, and 9 were released from their rod segments by removing the male threaded connector of each segment. Once the segment was opened and the cut surface deburred, the inner capsules easily slid out by tilting the segment. The outer surfaces of the intact inner capsules were then visually inspected. An arbitrary zero degree reference was established by placing a red paint dot near the top of each inner capsule. Each segment was placed in a slotted tray adjacent to a ruler that had 1 inch major divisions and 0.1 inch minor divisions. The capsule was then viewed through a Kollmorgen periscope from top to bottom in 90 degree increments to identify any visible anomalies. A c01l1Il1on set of digital photographs were taken of each capsule in the zero degree orientation to document the general condition of the end caps and welds on each end, and the cladding. Additional photographs were taken of the top and bottom end caps at an angle to view the end cap female threads.

Figures 13 and 14 show the condition of the intact inner capsules. ((

)).

3.5 VISUAL INSPECTION OF INNER SURFACE OF INNER CAPSULE TUBE Four inch long blanks of the inner capsule tube from Segments 2, 6, and 9 were clam-shelled so that the inner surface of the inner capsule tube could be examined. The blanks were obtained from approximately the middle of the segment for all three segments.

Photographic documentation of the inner surface is shown in Figure 15. ((

)). Numerous fresh scratches exist on the inner surface of the inner tubing, which were caused by twisting and pulling the tightly held canister to remove it from the inner capsule. The inner surface of Segment 9 ((

)). A small piece of the inner capsule from this segment was examined metallographically to investigate these features and is discussed further in Section 3.7.

3-2

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public) 3.6 VISUAL INSPECTION OF CANISTER AND COBALT TARGETS The canisters containing the cobalt targets were removed from the inner capsules from Segments 2, 6, and 9.

An example of the Segment 2 canister being pulled from its capsule is shown in Figure 16. In this figure, cobalt targets are visible sitting both upright and on their sides within the canister as designed.

Examples of the condition of batches of targets removed from each of the three canisters are shown in Figure 17. ((

))*

Photographic documentation of the removed canisters is shown in Figure 18. As expected, there were occasional targets that were stuck in each of the three canisters (Figure 19); ((

)).

3.7 OPTICAL MICROSCOPY OF OUTER TUBE AND INNER TUBE SAMPLES After completing the basic visual inspections and target removal, two samples were prepared for optical microscopy. The first sample (F360) was obtained from the outer tube from Segment 6 and the second (F361) from the inner tube of Segment 9. The outer tube is exposed to the boiling water reactor (BWR) reactor water so the primary purpose of its examination was to evaluate the waterside ((

)). The primary purpose of examining the inner tube was to evaluate the ((

]l.

Approximately '/2 inch long samples were sectioned from their parent tubes.

The outer tube sample was a full ring but the inner tube sample was an approximately 180 degree arc of a ring.

The samples were mounted, ground and polished with standard metallographic techniques.

((

)). After polishing, the inner and outer surfaces of both samples were examined at high magnification. Once the polished examination was completed, the samples were ((

)). Digital images were obtained to document the examination in both polished and etched conditions. ((

)). Images of the calibration slide scales were placed in the report with the same image size conditions (Figure 20). Feature lengths shown in the micrographs can be obtained by NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public) 3.6 VISUAL INSPECTION OF CANISTER AND COBALT TARGETS The canisters containing the cobalt targets were removed from the inner capsules from Segments 2, 6, and 9. An example of the Segment 2 canister being pulled from its capsule is shown in Figure 16. In this figure, cobalt targets are visible sitting both upright and on their sides within the canister as designed.

Examples of the condition of batches of targets removed from each of the three canisters are shown in Figure 17. ((

)).

Photographic documentation of the removed canisters is shown in Figure 18. As expected, there were occasional targets that were stuck in each of the three canisters (Figure 19); ((

)).

3.7 OPTICAL MICROSCOPY OF OUTER TUBE AND INNER TUBE SAMPLES After completing the basic visual inspections and target removal, two samples were prepared for optical microscopy. The first sample (F360) was obtained from the outer tube from Segment 6 and the second (F361) from the inner tube of Segment 9. The outer tube is exposed to the boiling water reactor (BWR) reactor water so the primary purpose of its examination was to evaluate the waterside ((

)). The primary purpose of examining the inner tube was to evaluate the ((

)).

Approximately Y2 inch long samples were sectioned from their parent tubes. The outer tube sample was a full ring but the inner tube sample was an approximately 180 degree arc of a ring.

The samples were mounted, ground and polished with standard metallographic techniques.

((

)). After polishing, the inner and outer surfaces of both samples were examined at high magnification. Once the polished examination was completed, the samples were ((

)). Digital images were obtained to document the examination in both polished and etched conditions. ((

)). Images of the calibration slide scales were placed in the report with the same image size conditions (Figure 20). Feature lengths shown in the micrographs can be obtained by reference to these slide scales. ((

)) of the inner tube is consistent with as-fabricated levels ((

)). ((

)) of the outer tube is

((

)).

Figures 21 and 22 show the examination results for the outer tube and Figures 23 through 25 for the inner tube. [ [

)). The waterside 3-3 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public) 3.6 VISUAL INSPECTION OF CANISTER AND COBALT TARGETS The canisters containing the cobalt targets were removed from the inner capsules from Segments 2, 6, and 9. An example of the Segment 2 canister being pulled from its capsule is shown in Figure 16. In this figure, cobalt targets are visible sitting both upright and on their sides within the canister as designed.

Examples of the condition of batches of targets removed from each of the three canisters are shown in Figure 17. ((

)).

Photographic documentation of the removed canisters is shown in Figure 18. As expected, there were occasional targets that were stuck in each of the three canisters (Figure 19); ((

)).

3.7 OPTICAL MICROSCOPY OF OUTER TUBE AND INNER TUBE SAMPLES After completing the basic visual inspections and target removal, two samples were prepared for optical microscopy. The first sample (F360) was obtained from the outer tube from Segment 6 and the second (F361) from the inner tube of Segment 9. The outer tube is exposed to the boiling water reactor (BWR) reactor water so the primary purpose of its examination was to evaluate the waterside ((

)). The primary purpose of examining the inner tube was to evaluate the ((

)).

Approximately Y2 inch long samples were sectioned from their parent tubes. The outer tube sample was a full ring but the inner tube sample was an approximately 180 degree arc of a ring.

The samples were mounted, ground and polished with standard metallographic techniques.

((

)). After polishing, the inner and outer surfaces of both samples were examined at high magnification. Once the polished examination was completed, the samples were ((

)). Digital images were obtained to document the examination in both polished and etched conditions. ((

)). Images of the calibration slide scales were placed in the report with the same image size conditions (Figure 20). Feature lengths shown in the micrographs can be obtained by reference to these slide scales. ((

)) of the inner tube is consistent with as-fabricated levels ((

)). ((

)) of the outer tube is

((

)).

Figures 21 and 22 show the examination results for the outer tube and Figures 23 through 25 for the inner tube. [ [

)). The waterside 3-3

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public) surface of the outer tube has a ((

)). The outer tube shows no visible signs of interaction with the inner capsule (e.g., wear) and is in excellent condition. There is some ((

)).

((

NEDO-33787 Revision 0 N on-Proprietary Information - Class I (public) surface of the outer tube has a ((

)). The outer tube shows no visible signs of interaction with the inner capsule (e.g., wear) and is in excellent condition. There is some ((

n*

((

n*

3-4 NEDO-33787 Revision 0 N on-Proprietary Information - Class I (public) surface of the outer tube has a ((

)). The outer tube shows no visible signs of interaction with the inner capsule (e.g., wear) and is in excellent condition. There is some ((

n*

((

n*

3-4

((

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

((

F'gure 1 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

))

Visual Inspection of As-Received Segment 9 (SIN 0166CBT) 3-5

((

F'gure 1 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

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Visual Inspection of As-Received Segment 9 (SIN 0166CBT) 3-5

11 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

((

Figure 2 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

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Visual Inspection of As-Received Segment 9 (SIN 0166CBT) 3-6

((

Figure 2 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

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Visual Inspection of As-Received Segment 9 (SIN 0166CBT) 3-6

[1 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

((

Figure 3 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

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Visual Inspection of As-Received Segment 9 (SIN 0166CBT) 3-7

((

Figure 3 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

))

Visual Inspection of As-Received Segment 9 (SIN 0166CBT) 3-7

((

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

((

Figure 4 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

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Visual Inspection of As-Received Segment 6 (SIN 0327CBT) 3-8

((

Figure 4 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

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Visual Inspection of As-Received Segment 6 (SIN 0327CBT) 3-8

11 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

((

Figure 5 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

))

Visual Inspection of As-Received Segment 6 (SIN 0327CBT) 3-9

((

Figure 5 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

))

Visual Inspection of As-Received Segment 6 (SIN 0327CBT) 3-9

11 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

((

Figure 6 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

))

Visual Inspection of As-Received Segment 6 (SIN 0327CBT) 3-10

((

Figure 6 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

))

Visual Inspection of As-Received Segment 6 (SIN 0327CBT) 3-10

11 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

((

Figure 7 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

))

Visual Inspection of As-Received Segment 3 (SIN 0315CBT) 3-11

((

Figure 7 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

))

Visual Inspection of As-Received Segment 3 (SIN 0315CBT) 3-11

1[

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

((

Figure 8 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

))

Visual Inspection of As-Received Segment 2 (SIN 0436CBT) 3-12

((

Figure 8 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

))

Visual Inspection of As-Received Segment 2 (SIN 0436CBT) 3-12

C[

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

((

Figure 9 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

))

Visual Inspection of As-Received Segment 2 (SIN 0436CBT) 3-13

((

Figure 9 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

))

Visual Inspection of As-Received Segment 2 (SIN 0436CBT) 3-13

11 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

NEDO-33787 Revision 0 N on-Proprietary Information - Class I (Public)

((

))

Figure 10 Visual Inspection of As-Received Segment 2 (SIN 0436CBT) 3-14 NEDO-33787 Revision 0 N on-Proprietary Information - Class I (Public)

((

))

Figure 10 Visual Inspection of As-Received Segment 2 (SIN 0436CBT) 3-14

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

Serial Number 0166CBT Segment 9

[II Vial 65824 Serial Number 0327CBT Segment 6 Vial 65825 Serial Number 0436CBT Segment 2 11 Vial 65826 Figure 11 Visual Inspection of Inner Surfaces of Outer Tubes from Segments 2, 6, and 9

((

Figure 11 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

Serial Nwnber 0166CBT Segment 9 Vial 65824 Serial Number 0327CBT Segment 6 Vial 65825 Serial Number 0436CBT Segment 2 Vial 65826

))

Visual Inspection of Inner Surfaces of Outer Tubes from Segments 2, 6, and 9 3-15

((

Figure 11 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

Serial Nwnber 0166CBT Segment 9 Vial 65824 Serial Number 0327CBT Segment 6 Vial 65825 Serial Number 0436CBT Segment 2 Vial 65826

))

Visual Inspection of Inner Surfaces of Outer Tubes from Segments 2, 6, and 9 3-15

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

Serial Number 0166CBT Segment 9 Serial Number 0327CBT Segment 6 Serial Number 0436CBT 1]

Segment 2 Figure 12 Visual Inspection of Capsule Centering Pegs from Segments 2, 6, and 9

((

Fig~re 12 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

Serial Number 0166CBT Segment 9 Serial Number 0327CBT Segment 6 Serial Number 0436CBT Segment 2

))

Visual Inspection of Capsule Centering Pegs from Segments 2, 6, and 9 3-16

((

Fig~re 12 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

Serial Number 0166CBT Segment 9 Serial Number 0327CBT Segment 6 Serial Number 0436CBT Segment 2

))

Visual Inspection of Capsule Centering Pegs from Segments 2, 6, and 9 3-16

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public) 11 11 0166CBT Seg. 9 0327CBT Seg. 6 0436CBT Seg. 2 Figure 13 Visual Inspection of Inner Capsules from Segments 2, 6, and 9

((

Figure 13 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

))

Visual Inspection of Inner Capsules from Segments 2, 6, and 9 3-17 O166CBT Seg.9 0327CBT Seg.6 0436CBT Seg.2

((

Figure 13 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

))

Visual Inspection of Inner Capsules from Segments 2, 6, and 9 3-17 O166CBT Seg.9 0327CBT Seg.6 0436CBT Seg.2

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public) 11 0166CBT Segment 9 0327CBT Segment 6 0436CBT Segment 2 Figure 14 Visual Inspection of Inner Capsules from Segments 2, 6, and 9

((

Figure 14 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

))

O166CBT Segment 9 0327CBT Segment 6 0436CBT Segment 2 Visual Inspection of Inner Capsules from Segments 2,6, and 9 3-18

((

Figure 14 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

))

O166CBT Segment 9 0327CBT Segment 6 0436CBT Segment 2 Visual Inspection of Inner Capsules from Segments 2,6, and 9 3-18

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

Serial Number 0166CBT Segment 9 Vial 65831 Serial Number 0327CBT Segment 6 Vial 65834 Serial Number 0436CBT Segment 2 1]

Vial 65828 Figure 15 Visual Inspection of Inner Surfaces of Inner Capsules from Segments 2, 6, and 9 Figure 15

((

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

Serial Number 0166CBT Segment 9 Vial 65831 Serial Number 0327CBT Segment 6 Vial 65834 Serial Number 0436CBT Segment 2 Vial 65828

))

Visual Inspection of Inner Surfaces of Inner Capsules from Segments 2, 6, and 9 3-19 Figure 15

((

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

Serial Number 0166CBT Segment 9 Vial 65831 Serial Number 0327CBT Segment 6 Vial 65834 Serial Number 0436CBT Segment 2 Vial 65828

))

Visual Inspection of Inner Surfaces of Inner Capsules from Segments 2, 6, and 9 3-19

[1 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public) 1]

Figure 16 Extraction of Targets Utilizing Canister Extraction Tool

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Figure 16 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (~ublic)

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Extraction of Targets Utilizing Canister Extraction Tool 3-20

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Figure 16 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (~ublic)

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Extraction of Targets Utilizing Canister Extraction Tool 3-20

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Serial Number 0166CBT Segment 9 Serial Number 0327CBT Segment 6 Serial Number 0436CBT 11 Segment 2 Figure 17 Visual Inspection of Extracted Targets from Segments 2, 6, and 9 NEDO-33787 Revision 0 N on-Proprietary Information - Class I (public)

Serial Number 0166CBT Segment 9

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Serial Number 0327CBT Segment 6 Serial Number 0436CBT Segment 2

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Figure 17 Visual Inspection of Extracted Targets from Segments 2, 6, and 9 3-21 NEDO-33787 Revision 0 N on-Proprietary Information - Class I (public)

Serial Number 0166CBT Segment 9

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Serial Number 0327CBT Segment 6 Serial Number 0436CBT Segment 2

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Figure 17 Visual Inspection of Extracted Targets from Segments 2, 6, and 9 3-21

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

Serial Number 0166CBT Segment 9 Serial Number 0327CBT Segment 6 Serial Number 0436CBT Segment 2 Figure 18 Visual Inspection of Canisters from Segments 2, 6, and 9

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Figure 18 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

Serial Number 0166CBT Segment 9 Serial Number 0327CBT Segment 6 Serial Number 0436CBT Segment 2

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Visual Inspection of Canisters from Segments 2, 6, and 9 3-22

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Figure 18 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

Serial Number 0166CBT Segment 9 Serial Number 0327CBT Segment 6 Serial Number 0436CBT Segment 2

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Visual Inspection of Canisters from Segments 2, 6, and 9 3-22

11 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public) 11 Figure 19 Stuck Target in Canister from Segment 0166CBT NEDO-33787 Revision 0 N on-Proprietary Information - Class I (Public)

((

))

Figure 19 Stuck Target in CanIster from Segment 0166CBT 3-23 NEDO-33787 Revision 0 N on-Proprietary Information - Class I (Public)

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))

Figure 19 Stuck Target in CanIster from Segment 0166CBT 3-23

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

Figure 20 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public) 13.5X OBJ, 61 mm BD, 500X Calibration Scale at Original Magnifications of 100, 250, and 500X Magnifications; Smallest Division is 20 Microns 3-24 Figure 20 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public) 13.5X OBJ, 61 mm BD, 500X Calibration Scale at Original Magnifications of 100, 250, and 500X Magnifications; Smallest Division is 20 Microns 3-24

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((

11

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Figure 21 Polished Metallographic Cross-Sections from Segment 6 Outer Tube Showing ((

))

3-25

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Figure 21 Polished Metallographic Cross-Sections from Segment 6 Outer Tube Showing ((

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3-25

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public) 11 Figure 22 Etched Metallographic Cross-Section from Segment 6 Outer Tube Showing

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11 Figure 22 NEDO-33787 Revision 0 Non-Proprietary Infonnation - Class I (Public)

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Etched Metallographic Cross-Section from Segment 6 Outer Tube Showing

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3-26 Figure 22 NEDO-33787 Revision 0 Non-Proprietary Infonnation - Class I (Public)

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Etched Metallographic Cross-Section from Segment 6 Outer Tube Showing

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3-26

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Figure 23 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

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Polished MetaUographic Cross-Sections from Segment 9 Inner Tube Showing

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3-27

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Figure 23 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

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Polished MetaUographic Cross-Sections from Segment 9 Inner Tube Showing

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3-27

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]1 Figure 24 Polished Metallographic Cross-Sections from Segment 9 Inner Tube Showing

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11 Figure 24

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Polished Metallographic Cross-Sections from Segment 9 Inner Tube Showing

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Figure 24

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Polished Metallographic Cross-Sections from Segment 9 Inner Tube Showing

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))

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1]

Figure 25 Etched Metallographic Cross-Section from Segment 9 Inner Tube Showing

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11 Figure 25 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

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Etched MetaUographic Cross-Section from Segment 9 Inner Tube Showing

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3-29 Figure 25 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

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Etched MetaUographic Cross-Section from Segment 9 Inner Tube Showing

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4.

SUMMARY

AND CONCLUSIONS The nine segments comprising a single GE14i segmented isotope rod (JYK690 ((

))) have been examined in the GEH hot cells to ascertain their integrity and design functionality after one irradiation cycle in the Clinton BWR. The examination confirmed that the GE14i segmented isotope rod exhibited excellent mechanical integrity and performed as intended.

Highlights of the examination include the following:

General waterside Zircaloy cladding corrosion (oxide thickness) was about ((

)), which is near the detection limit of the measurement technique that was used.

The ((

)). The presence of the targets did not accelerate corrosion in any manner.

((

)) of the inner tube is consistent with as-fabricated levels

((

)). ((

)) of the outer tube is ((

)).

Spacer contact wear marks were observed, which is a normal occurrence. The extent of the contact wear is normal.

The rod segments maintained their physical integrity as demonstrated by the lustrous, metallic unoxidized appearance on the inside of the three segments that were opened.

The inner surface of the inner capsule exhibited a ((

)) and one segment (#9) exhibited ((

)) on the inner surface.

The features were examined by optical microscopy that showed them to be ((

)).

As expected, superficial wear was observed between the inner capsule and male threaded connector centering pegs.

No noticeable wear was observed between the cladding surfaces of the inner capsule and the outer tube or between the cladding surfaces of the inner capsule and canister.

Overall, the GE14i exhibits fully satisfactory mechanical integrity after one cycle of irradiation; no mechanical design aspects require re-examination after the next cycle or at end of life.

NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

4.

SUMMARY

AND CONCLUSIONS The nine segments comprising a single GE14i segmented isotope rod (NK690 ((

))) have been examined in the GEH hot cells to ascertain their integrity and design functionality after one irradiation cycle in the Clinton BWR. The examination confirmed that the GE14i segmented isotope rod exhibited excellent mechanical integrity and performed as intended. Highlights of the examination include the following:

General waterside Zircaloy cladding corrosion (oxide thickness) was about ((

)), which is near the detection limit of the measurement technique that was used.

The ((

)). The presence of the targets did not accelerate corrosion in any manner.

(( ((

)). ((

)) of the inner tube is consistent with as-fabricated levels

)) of the outer tube is ((

)).

Spacer contact wear marks were observed, which is a normal occurrence. The extent of the contact wear is normal.

The rod segments maintained their physical integrity as demonstrated by the lustrous, metallic unoxidized appearance on the inside of the three segments that were opened.

The inner surface of the inner capsule exhibited a ((

)) and one segment (#9) exhibited ((

)) on the inner surface.

The features were examined by optical microscopy that showed them to be ((

)).

As expected, superficial wear was observed between the inner capsule and male threaded connector centering pegs.

No noticeable wear was observed between the cladding surfaces of the inner capsule and the outer tube or between the cladding surfaces of the inner capsule and canister.

Overall, the GE14i exhibits fully satisfactory mechanical integrity after one cycle of irradiation; no mechanical design aspects require re-examination after the next cycle or at end of life.

4-1 NEDO-33787 Revision 0 Non-Proprietary Information - Class I (Public)

4.

SUMMARY

AND CONCLUSIONS The nine segments comprising a single GE14i segmented isotope rod (NK690 ((

))) have been examined in the GEH hot cells to ascertain their integrity and design functionality after one irradiation cycle in the Clinton BWR. The examination confirmed that the GE14i segmented isotope rod exhibited excellent mechanical integrity and performed as intended. Highlights of the examination include the following:

General waterside Zircaloy cladding corrosion (oxide thickness) was about ((

)), which is near the detection limit of the measurement technique that was used.

The ((

)). The presence of the targets did not accelerate corrosion in any manner.

(( ((

)). ((

)) of the inner tube is consistent with as-fabricated levels

)) of the outer tube is ((

)).

Spacer contact wear marks were observed, which is a normal occurrence. The extent of the contact wear is normal.

The rod segments maintained their physical integrity as demonstrated by the lustrous, metallic unoxidized appearance on the inside of the three segments that were opened.

The inner surface of the inner capsule exhibited a ((

)) and one segment (#9) exhibited ((

)) on the inner surface.

The features were examined by optical microscopy that showed them to be ((

)).

As expected, superficial wear was observed between the inner capsule and male threaded connector centering pegs.

No noticeable wear was observed between the cladding surfaces of the inner capsule and the outer tube or between the cladding surfaces of the inner capsule and canister.

Overall, the GE14i exhibits fully satisfactory mechanical integrity after one cycle of irradiation; no mechanical design aspects require re-examination after the next cycle or at end of life.

4-1

ATTACHMENT 4 Clinton GE14i Pin-by-Pin Gamma Scan Report Non-Proprietary ATTACHMENT 4 Clinton GE14i Pin-by-Pin Gamma Scan Report Non-Proprietary ATTACHMENT 4 Clinton GE14i Pin-by-Pin Gamma Scan Report Non-Proprietary

Global Nuclear Fuel A Jam Vef"Wwof GETodxa H ihchi Global Nuclear Fuel NEDO-33784 Revision 0 DRF Section 0000-0153-6562 RO October 2012 Non-Proprietary Information - Class I (Public)

GE14i Pin-by-Pin Gamma Scan at Clinton December 2011 Global Nuclear Fuel Global Nuclear Fuel NEDO-33784 Revision 0 DRF Section 0000-0153-6562 RO October 2012 Non-Proprietary Information - Class I (Public)

GE14i Pin-by-Pin Gamma Scan at Clinton December 2011 Copyright 2012 Global Nuclear Fuel-Americas, LL C All Rights Reserved Global Nuclear Fuel Global Nuclear Fuel NEDO-33784 Revision 0 DRF Section 0000-0153-6562 RO October 2012 Non-Proprietary Information - Class I (Public)

NEDO-33784 Revision 0 Non-Proprietary Information - Class I (Public)

INFORMATION NOTICE This is a non-proprietary version of the document NEDC-33784P, Revision 0, which has the proprietary information removed.

Portions of the document that have been removed are indicated by an open and closed bracket as shown here ((

)).

IMPORTANT NOTICE REGARDING THE CONTENTS OF THIS REPORT PLEASE READ CAREFULLY The design, engineering, and other information contained in this document is furnished solely for the purpose(s) stated in the transmittal letter.

The use of this information by anyone for any purpose other than that for which it is intended is not authorized; and with respect to any unauthorized use, GNF makes no representation or warranty, and assumes no liability as to the completeness, accuracy, or usefulness of the information contained in this document.

NEDO-33784 Revision 0 Non-Proprietary Information - Class I (Public)

INFORMATION NOTICE This is a non-proprietary version of the document NEDC-33784P, Revision 0, which has the proprietary information removed.

Portions of the document that have been removed are indicated by an open and closed bracket as shown here ((

)).

IMPORT ANT NOTICE REGARDING THE CONTENTS OF THIS REPORT PLEASE READ CAREFULLY The design, engineering, and other information contained in this document is furnished solely for the purpose(s) stated in the transmittal letter. The use of this information by anyone for any purpose other than that for which it is intended is not authorized; and with respect to any unauthorized use, GNF makes no representation or warranty, and assumes no liability as to the completeness, accuracy, or usefulness of the information contained in this document.

11 NEDO-33784 Revision 0 Non-Proprietary Information - Class I (Public)

INFORMATION NOTICE This is a non-proprietary version of the document NEDC-33784P, Revision 0, which has the proprietary information removed.

Portions of the document that have been removed are indicated by an open and closed bracket as shown here ((

)).

IMPORT ANT NOTICE REGARDING THE CONTENTS OF THIS REPORT PLEASE READ CAREFULLY The design, engineering, and other information contained in this document is furnished solely for the purpose(s) stated in the transmittal letter. The use of this information by anyone for any purpose other than that for which it is intended is not authorized; and with respect to any unauthorized use, GNF makes no representation or warranty, and assumes no liability as to the completeness, accuracy, or usefulness of the information contained in this document.

11

NEDO-33784 Revision 0 Non-Proprietary Information - Class I (Public)

TABLE OF CONTENTS Acronyms and Abbreviations..................................................................................................... Vi Abstract......................................................................................................................................... vii

1. Introduction............................................................................................................................. 1-1 1.1 Overview......................................................................................................................... 1-1 1.2 Gamma Scan Measurements...........................................................................................1-1

2. Plant Description...................................................................................................................... 2-1 2.1 Bundle JYK690............................................................................................................ 2-1 2.2 Location of Bundle JYK690......................................................................................... 2-2

3. Fuel Description..................................................................................................................... 3-1

4. Clinton Cycle 13 Operation..................................................................................................... 4-1 4.1 Off-Line Core Tracking and TIP Comparisons.............................................................. 4-3 4.2 Off-Line TIP Comparisons............................................................................................. 4-3

5. Comparisons of Predicted BA140 Distributions...................................................................... 5-1 5.1 Predictions of Pin-by-Pin Ba14° with PANACI I Non-Adapted Core Tracking............. 5-1

6. Gamma Scan Equipment and Program Description........................

......... 6-1 6.1 Water Submersible Gamma Spectrometer................................................................... 6-2 6.2 Scope of Measurements.................................................................................................. 6-3 6.3 Power Rod Measurements (BA14° / LA140)....................

......................................... 6-4 6.4 LA14° Reference Rod Measurements.............................................................................. 6-5

7. Types of Comparisons....................................................................................................... 7-1

8. Traditional Basis for Gamma Scan Comparisons.................................................................... 8-1 8.1 Summary - Bundle JYK690 - Traditional Basis........................................................... 8-1

9. BA140 / LA140 Pin Nodal, Rod, and Axial Average Root Mean Square Comparisons............ 9-1 9.1 Pin Nodal, Rod, and Axial Average Statistical Summary.............................................. 9-1 9.2 Summary Plot of Pin Nodal RMS.................................................................................. 9-2

10. Conclusions.................................................................................................................... 10-1

11. References........................................................................................................ 11-1 NEDO-33784 Revision 0 Non-Proprietary Infonnation - Class I (Public)

TABLE OF CONTENTS Acronyms and Abbreviations......................................................................................................... vi Abstract......................................................................................................................................... vii

1. Introduction.............................................................................................................................. 1-1 1.1 Overview......................................................................................................................... 1-1 1.2 Gamma Scan Measurements........................................................................................... 1-1

2. Plant Description...................................................................................................................... 2-1 2.1 Bundle NK690................................. '............................................................................ 2-1 2.2 Location of Bundle NK690........................................................................................... 2-2

3. Fuel Description....................................................................................................................... 3-1

4. Clinton Cycle 13 Operation..................................................................................................... 4-1 4.1 Off-Line Core Tracking and TIP Comparisons.............................................................. 4-3 4.2 Off-Line TIP Comparisons............................................................................................. 4-3

5. Comparisons of Predicted BA 140 Distributions....................................................................... 5-1 5.1 Predictions of Pin-by-Pin Ba140 with PANACII Non-Adapted Core Tracking............. 5-1

6. Gamma Scan Equipment and Program Description................................................................ 6-1 6.1 Water Submersible Gamma Spectrometer...................................................................... 6-2 6.2 Scope of Measurements.................................................................................................. 6-3 6.3 Power Rod Measurements (BA14o / LA140).................................................................... 6-4 6.4 LA 140 Reference Rod Measurements............................................................................ '. 6-5

7. Types of Comparisons...................................................... '....... '.............................................. 7-1

8. Traditional Basis for Gamma Scan Comparisons.................................................................... 8-1 8.1 Summary - Bundle JYK690 - Traditional Basis........................................................... 8-1

9. BA140 / LAI40 Pin Nodal, Rod, and Axial Average Root Mean Square Comparisons............ 9-1 9.1 Pin Nodal, Rod, and Axial Average Statistical Summary.............................................. 9-1 9.2 Summary Plot of Pin Nodal RMS.................................................................................. 9-2

10. Conclusions.......................................................................................................................... 10-1

11. References............................................................................................................................ 11-1 iii NEDO-33784 Revision 0 Non-Proprietary Infonnation - Class I (Public)