BYRON 2002-0135, Day Inservice Inspection Report for Interval 2, Period 2, Outage 1 (B2R10)

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Day Inservice Inspection Report for Interval 2, Period 2, Outage 1 (B2R10)
ML030140471
Person / Time
Site: Byron Constellation icon.png
Issue date: 01/03/2002
From: Lopriore R
Exelon Nuclear
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
3.11.0321, BYRON 2002-0135
Download: ML030140471 (188)
v • d • e


Text

{{#Wiki_filter:Exelkn,. Exelon Generation Company, LLC www exeloncorp corn Nuclear Byron Station 4450 North German Church Road Byron, IL61010-9794 January 3, 2002 LTR: BYRON 2002-0135 FILE: 3.11.0321 United States Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Byron Station, Unit 2 Facility Operating License No. NPF-66 NRC Docket No. STN 50-455 SUBJECT. Byron Station Unit 2 90-Day Inservice Inspection Report for Interval 2, Period 2, Outage 1 (B2R10) The subject 90-day Inservice Inspection (ISI) Report for the Byron Station Unit 2, Refueling Outage Ten (i.e. B2R10) is being submitted pursuant to the requirements of Article IWA-6000, "Records and Reports" of Section XI, "Rules for Inservice Inspection of Nuclear Power Plant Components," of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (B&PV) Code, 1989 Edition. The report covers the inservice inspections conducted prior to and during the Unit 2 Fall 2002 refueling outage. If there are any questions regarding this matter, please contact W. Grundmann, Regulatory Assurance Manager, at (815) 406-2800. RG~ctfully, ard . Lopriore Site Vice President Byron Nuclear Generating Station RPLIRGM/NV/rah

Attachment:

B2R10 Inservice Inspection Summary Report- Fall 2002 Outage cc: Regional Administrator - NRC Region III NRC Senior Resident Inspector- Byron Station 

\\BYRCLSTR VOL3USERVER\VOL3\DATA\WKGROUP\BYRDOCS\.Byrltrs\02Byltrs\020135 doc

BYRON Exelen.m UNIT 2 Nuclear B2R10 INSERVICE INSPECTION

SUMMARY

REPORT Fall2002 Outage April 22, 2001 to October 7, 2002 Commerical Service Date August 21, 1987 Document Completion Date December 10, 2002 Exelon Generation Company (EGC, LLC) 200 Exelon Way Kennett Square, PA 19348 Byron Nuclear Power Station 4450 North German Church Rd. Byron, IL 61010

BYRON UNIT 2 Exelkn. Nuclear B2R10 INSERVICE INSPECTION

SUMMARY

REPORT SECTION SECTION DESCRIPTION PAGESI i Cover Page I1 ii ITable of Contents I I Report Introduction 9 Welds & Components 12 Obstructed Examinations 1 

                                            '    Pressure Tests      6 C a esture       T 2      Examination Summary Tables     Containment Structure        I Component Supports          5 Snubbers       10 Welds & Components          12 Pressure Tests       9 Containment Structure        I Signature Page       1 3     ASME Form NIS-I                 Component Supports          5 Signature Page       1 Snubbers      10 Signature Page       1 4-4   ASME Form NIS-2                Repairs / Modifications     52 TOTAL PAGES IN REPORT]         138

BYRON STATION UNIT 2 REFUELING OUTAGE 10 INSERVICE INSPECTION REPORT

1.0 INTRODUCTION

Inservice inspections of American Society of Mechanical Engineers (ASME) Class 1, 2, 3, CC and MC components were conducted at Byron Station Unit 2 from September 17, 2002 through October 7, 2002. The majority of these inspections were performed during the Byron Station Unit 2 tenth refueling outage (B2R1 0). The examinations were performed in compliance with the rules and regulations of ASME Section XI, Division 1, "Rules for Inservice Inspection of Nuclear Power Plant Components," (applicable edition and addenda), pursuant to the requirements of 10 CFR 50.55a, "Codes and Standards." This summary report will address inspection results of Class 1 and 2 components and piping, as required by the ASME Code, IWA-6000. See Section 3.0 for a listing of referenced documents. The Nondestructive Examination (NDE) Inservice Inspection (ISI) Program Plan for Class 1, 2, and 3 components was developed in accordance with the requirements and intent of Section XI Subsections IWA, IWB, IWC, IWD, and IWF, 1989 Edition, No Addenda, and Subsections IWA and IWE and IWL, 1998 Edition, No Addenda for Class CC and MC components. In addition to the ASME Section XI requirements of examination, certain Nuclear Regulatory Commission (NRC) augmented ISI inspections were required. The Byron Station Unit 2 augmented ISI examination requirements include: a) High-energy lines in accordance with NUREG 0800, "Standard Review Plan"; b) Class 1 pressure boundary for leakage at nominal operating pressure, in accordance with NRC Generic Letter 88-05, "Boric Acid Corrosion of Carbon Steel Reactor Pressure Boundary Components in PWR Plants"; c) Class 2 and 3 pressure boundary for leakage at nominal operating pressure, in accordance with NUREG 0737, "Clarification of TMI Action Plan Requirements"; d) Examination of RCP Flywheels in accordance with Regulatory Guide 1.14. Note: Specific requests for relief were developed and submitted for the NRC's review when the code and/or augmented requirement(s) were deemed to be impractical, results in excessive hardship, or an alternative examination method is determined as more suitable for the particular component. 1.1 Identification of Examination Requirements The ISI Program contains the NDE program tables. These tables are presented in a tabular format consistent with the tables found in Subsections IWB, IWC, IWD, IWE, and IWF, and IWL-2500 of the ASME Code. The NDE tables include the corresponding code category, item number, and component/weld selection in conformance with examination requirements and intent of Subsection IWA, IWB, IWC, IWD, IWE, IWF, and IWL of Section XI of the ASME Code. Program notes and relief requests and additional information are identified in the "remarks" column. Page 1 of 9

BYRON STATION UNIT 2 REFUELING OUTAGE 10 INSERVICE INSPECTION REPORT For Class I and 2 piping, the requirements of Risk Informed Inservice Inspection (RI-ISI) are followed using Table I of ASME Code Case N-578-1, and EPRI Topical Report TRI 12657 Revision B-A, "Revised Risk-Informed Inservice Inspection Procedure." This alternate selection and examination method was approved for use with Byron Station's Request for Relief 12R-40 and was incorporated into program plan (currently Revision 4, dated February 15, 2002). This request was granted by a Safety Evaluation (SER) dated February 5, 2002. As specified in 12R-40 and granted by the SER, the volumetric examination for RI-ISI begins the 2 nd Period with 70.37% remaining for the Second Inspection Interval. This percentage was determined by a completion of 29.63% of the required examinations at the end of the 1 st Period. The Class I and 2 piping welds examined in the 1st Period were determined by Examination Categories B-F, B-J, C-F-I, and C-F-2. These categories were subsequently replaced by the single RI-ISI Examination Category R-A. With the adoption of RI-ISI, 67 Class I socket welds were chosen for VT-2 examination every refueling outage as allowed by Code Case N-578-1. The VT-2 examination of these welds began with the start of the 2 nd Period and will be repeated every outage for the remainder of the Interval. 1.2 Identification of Exempted components ASME Class 1, 2, and 3 components, or parts of components, that are not included in the NDE tables and that are exempt from examination, as specified in Section XI Paragraphs IWB, IWC, and IWD-1200, "Components Exempt from Examination," and Table IWD-2500-1, are identified in the NDE Program Plan in conjunction with technical justification(s) for exempting the component/system. Class 1 or 2 piping welds exempted by IWB and IWC 1200 are not included in the establishment of the RI-ISI program. Previous selection and examination exemptions identified in Tables IWB and IWC 2500-1 for Examination Categories B-F, B-J, C F-I, and C-F-2, are not allowed under the requirements of the RI-ISI program. With the adoption of RI-ISI, welds evaluated as Risk Category 6 or 7 are not required to be subject to examination. 1.3 Implementation of the ISI Program Exelon Nuclear, or its designee, visually examined ASME components utilizing the following test methods: VT-1, VT-2, and VT-3. The components examined comply with the ISI Program Schedule, Byron Station Technical Specifications, and/or comply with the ASME Section XI Repair/Replacement Program. Certified personnel performed and evaluated visual examinations (i.e., VT-1, VT-2, and VT-3) of Class 1, 2, and 3 components and supports. Exelon Nuclear personnel certification procedures comply with the requirements of ANSI/ASNT CP-189, 1991 Edition and ASNT SNT-TC-1A, 1984 Edition. Page 2 of 9

BYRON STATION UNIT 2 REFUELING OUTAGE 10 INSERVICE INSPECTION REPORT Certified personnel performed and evaluated all NDE. Personnel were certified to the requirements of the ASNT SNT-TC-1A, 1984 Edition. Additionally, ultrasonic examiners were certified in accordance with ANSI/ASNT CP-1 89, 1991 Revision. The NDE procedures were developed and certified in conformance with ASME Section V and XI, -1989 Edition, and the 1995 Edition with the 1996 Addenda as applicable. All ISI NDE, including evaluation of flaw indications, were performed in accordance with the requirements stipulated under Section XI, Subarticle IWA-2200 "Examination Methods." For components incorporated into the RI-ISI program, the guidance for the examination volume for a given degradation mechanism is provided by the EPRI Topical Report while the guidance for the examination method is provided by Code Case N-578-1. All ISI NDE, including evaluation of flaw indications, were performed in accordance with the requirements stipulated under Section XI, Subarticle IWA-2200 "Examination Methods." 1.4 Witness and Verification of Examination The inservice inspections were witnessed and/or verified by the Authorized Nuclear Inservice Inspectors (ANII), J. Hendricks and R. Ward. These inspectors are associated with Hartford Steam Boiler Inspection and Insurance Company of Connecticut, Chicago Branch, at 2443 Warrenville Rd., Suite 500, Lisle, Illinois 60532. Page 3 of 9

BYRON STATION UNIT 2 REFUELING OUTAGE 10 INSERVICE INSPECTION REPORT 2.0 EXAMINATION SUMMARIES The following section contains summaries of examinations performed during the refueling outage. Refer to each summary table for additional information or for specific tests and examinations conducted during this term. 2.1 Welds & Components Summary PIPING AND PUMPS VESSEL WELDS AUGMENTED 0 coo 0 COMPONENT I SYSTEM BASIC PRESSURE A 0 o BOLTINGG I DESCRIPTION RETAINING WELDS M HELB* ECCS- 2*. rn CA M9

  • s M5_" STUDS M ES FLYWHEELS C, Z, Z 4 ) rn CA EXAMINATION METHOD SUR VOL VT SUR SUR VOL VT SUR VOL SUR VOL VOL SUR VOL SUR VOL VT VT SURFACE. VOLUMETRIC, VISUAL Containment Spray 9 Chemical & Volume Control 1 13 2 Essential Service Water Feedwater 10 4 Main Steam 2 Pressurizer Surge 13 4 Pressurizer Vessel Reactor Coolant 8 43 1 Reactor Pressure Vessel I I Residual Heat Removal 7 4 Safety Injection System 6 7 1 3 Steam Generator Blowdown Steam Generators 1 I EXAM TYPE TOTAL 1 53 67 3 1 4 1 2 47 COMPONENTIEXAM TOTAL 129 7 7 OUTAGE EXAM TOTAL 143
   *HELB: High Energy Line Break examinations per NUREG              0800.
   **ECCS: Emergency Core Cooling System examination per NRC IN 79-19.

Page 4 of 9

BYRON STATION UNIT 2 REFUELING OUTAGE 10 INSERVICE INSPECTION REPORT 2.2 System Pressure Test Summary EXAMINATION AREA LEAK FUNCTIONAL INSERVICE PNEUMATIC Class 1 Vessel Pressure Retaining Boundary . Class 1 Piping, Pressure Retaining Boundary I Class I Pumps, Pressure Retaining Boundary 4 Class 1 Valves, Pressure Retaining Boundary 1 Class 2 Vessel Pressure Retaining Boundary 4 12 Class 2 Piping, Pressure Retaining Boundary 27 16 8 Class 2 Pumps, Pressure Retaining Boundary 6 3 Class 2 Valves, Pressure Retaining Boundary 27 16 8 TOTALS 12 64 47 16 2.3 Containment Examination Summary EXAMINATION ITEM* I AREA COMMENTS E1.11 Accessible surface area Augmented examinations to determine liner plate degradation. E4.10 Visible Surfaces Augmented examinations to determine liner plate degradation. L1.11 Accessible Surface Areas 100% of accessible surfaces examined (Concrete). L1.12 Suspect Areas Detailed examination when identified. L2.30 Anchorage Hardware & Detailed examination. Surrounding Concrete IM Page 5 of 9

BYRON STATION UNIT 2 REFUELING OUTAGE 10 INSERVICE INSPECTION REPORT 2.4 Component Support Examination Summary SYSTEM EXAMINED CLASS VT-3 Containment Spray . 2 2 Chemical Volume Control 2 4 Reactor Coolant 1 7 1 2 Residual Heat Removal 2 5 Safety Injection 2 1 TOTALS 21 2.5 Component Snubber Test Summary SYSTEM EXAMINED VT-3 EXAMINED FUNCTIONAL TEST Containment Spray - 17 Chemical Volume Control - 2 Feedwater - 4 Main Steam - 3 Reactor Coolant - 8 Pressurizer Surge and Piping - 5 Residual Heat Removal - 10 Safety Injection - 7 Steam Generator Blowdown - 8 TOTALS - 64 Page 6 of 9

BYRON STATION UNIT 2 REFUELING OUTAGE 10 INSERVICE INSPECTION REPORT 2.6 Repair/Replacement Summary A total of 49 ASME Form NIS-2, "Owners Report for Repairs or Replacements," were filed during Byron Station Unit 2 Cycle 10. The following is a system summary of NIS-2's generated: SYSTEM TOTAL NIS-2 FORMS NUMBER OF PAGES Boric Acid 2 2 Chemical Volume Control 10 10 Diesel Generator 4 4 Feed Water 1 1 Fire Protection 1 1 Main Steam 6 7 Reactor Coolant 7 7 Residual Heat Removal 1 1 Pressurizer 2 3 Service Air 1 1 Steam Generator Blowdown 2 2 Safety Injection 1 1 Essential Service Water 7 7 Auxiliary Building Floor Drains 2 3 Auxiliary Building HVAC 1 1 Spare Components 1 1 TOTAL 49 52 Page 7 of 9

BYRON STATION UNIT 2 REFUELING OUTAGE 10 INSERVICE INSPECTION REPORT 3.0 REFERENCED DOCUMENTS 3.1 Code of Federal Regulations, Title 10 "Energy" 

   -Part 50, "Domestic Licensing of Production and Utilization Facilities" 50.55a, "Codes and Standards" 3.2 American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code Section V, "Nondestructive Examination," 1989 Edition, No Addenda, Section V, "Nondestructive Examination," 1995 Edition, with the 1996 Addenda, Section XI, "Rules for Inservice Inspection of Nuclear Power Plant Components," 1989 Edition, No Addenda, Division I Rules for Inspection and Testing of Components of Light-Water Cooled Plants Subsection  IWA, "General Requirements" Article  IWA-2000, "Examination and Inspection" Article  IWA-4000, "Repair Procedures" Article  IWA-6000, "Records and Reports" Article  IWA-7000, "Replacement" Subsection IWB, "Requirements for Class 1 Components of Light-Water Cooled Plants" Article IWB-1000, "Scope and Responsibility" Article IWB-2000, "Examination and Inspection" Table IWB-2500-1, "Examination Categories" Subsection IWC, "Requirements for Class 2 Components of Light-Water Cooled Plants" Article IWC-1000, "Scope and Responsibility" Article IWC-2000, "Examination and Inspection" Table IWC-2500-1, "Examination Categories" Subsection IWD, "Requirements for Class 3 Components of Light-Water Cooled Plants" Article IWD-1000, "Scope and Responsibility" Article IWD-2000, "Examination and Inspection" Table IWD-2500-1, "Test and Examination Categories" Subsection IWF, "Requirements for Class 1, 2, 3 and MC Component Supports of Light Water Cooled Plants" Article IWF-2000, "Examination and Inspection" Table IWF-2500-1, "Examination Categories" Mandatory Appendices Appendix II, "Owner's Report for Inservice Inspections" (Forms NIS-1 and NIS-2)

Page 8 of 9

BYRON STATION UNIT 2 REFUELING OUTAGE 10 INSERVICE INSPECTION REPORT 3.2 ASME Boiler and Pressure Vessel Code (cont'd) Section XI, "Rules for Inservice Inspection of Nuclear Power Plant Components", 1998 Edition, No Addenda, Division I Rules for Inspection and Testing of Components of Light-Water Cooled Plants Subsection IWE, "Requirements for Class MC and Metallic Liners of Class CC Components of Light-Water Cooled Plants" Article IWE-2000, "Examination and Inspection" Table IWE-2500-1, "Examination Categories" Subsection 1WL, "Requirements for Class CC Concrete Components of Light-Water Cooled Plants" Article IWL-2000 Examination and Inspection Table IWL-2500-1, "Examination Categories" Cases of ASME Boiler and Pressure Vessel Code Case N-578-1 "Risk-Informed Requirements for Class 1, 2, or 3 Piping, Method B, Section XI, Division 1" 3.3 American National Standards Institute / American Society for Nondestructive Testing ANSI/ASNT CP-189, 1991 Edition, "Standard for Qualification and Certification of Nondestructive Testing Personnel" 3.4 American Society for Nondestructive Testing ASNT Recommended Practice No. SNT-TC-1A, 1984 Edition, "Personnel Qualification and Certification in Nondestructive Testing" 3.5 Miscellaneous NRC Documents NUREG-0800, Section 3.6.1, "Plant Design for Protection Against Postulated Piping Failures in Fluid Systems Outside Containment" Approval of Relief Request 12R-40 for Application of Risk-Informed Inservice Inspection Program as an Alternative to the ASME Boiler and Pressure Vessel Code Section XI Requirements for Class 1 and 2 Piping Welds for Byron Station, Units 1 and 2 (TAO NOS. MB0567 AND MB0568) Safety Evaluation by the Office of Nuclear Reactor Regulation, Risk Informed Inservice Inspection Program Relief Request, Exelon Generation Company, Byron Station Units 1 and 2, Docket Nos. STN 50-454 and STN 50-455 Information Notice 79-19, "Pipe Cracks in Stagnant Borated Water Systems at PWR Plants" Page 9 of 9

Exelon Byron Unit 2 Welds / Components B2R10 OUTAGE INSPECTION

SUMMARY

SYSTEM. INTERVAL* PERIOD Containment Spray (CS) Second Second OS CODE l - COMPONENTILINE COMPONENTI/WELD -,EXAM TYPE SLTNTE CODE ITEM iSOiMETkIC RSLSNTS NUMBER CATEGORY IDENTIFICATION NUtMBERi SUR VOL-IVIS'___________________ 10-166 R-A R1.20 2CS-08 2CSO6AA-6' C09 X __No Recordable Indications 10-167 R-A R1.20 2CS-08 2CSO6AA-6" C1013 X__ No Recordable Indications 10-1 68 R-A R1.20 .2CS-08 2CSO6AA-6" C12 X I-_No Recordable Indications 10-169 R-A R1.20 2CS-08 2CSO6AA-6" C13 X No Recordable Indications 10-1 70 R-A R1.20 2CS-03 2CS23AA-14" C26 X__ No Recordable Indications Page 1 of 12

Exelon Byron Unit 2 Welds / Components B2R10 OUTAGE INSPECTION

SUMMARY

SYSTEM. INTERVAL* PERIOD: Chemical Volume Control (CV) Second Second 2_OBSE.S, . CODE MER C COMPONENTILINE COMPONENTIWELD, EXAMTYPE - .. NUMBER COfE ITEM'- ISOMETRIC 6CATEGORY NOTES NDEN.IMCTIO ,"is SURGORVOL V 10-017 R-A R1.20 2CV-18 2CV05CA-6" C01 X No Recordable Indications 10-171 R-A R1.20 2CV-19 2CV05CB-6" C01 X No Recordable Indications 10-172 R-A R1.20 2CV-19 2CV05CB-6" C21 X No Recordable Indications 10-173 R-A R1.20 2CV-19 2CV05CB-6" C29 X No Recordable Indications 10-012 B-G-2 B7.50 2CV-06 2CV14GA-11/2" FLG 1-4 X No Recordable Indications 10-005 B-G-2 B7.50 2CV-03 2CV14GB-11/2" FLG 1-4 X No Recordable Indications 10-006 R-A R1.11 2CV-05 2CVA3B-2" W-70 X No Recordable Indications 10-007 R-A R1.11 2CV-05 2CVA3B-2" W-71 X No Recordable Indications 10-008 R-A R1.11 2CV-05 2CVA3B-2" W-72 X No Recordable Indications 10-009 R-A RI.11 2CV-05 2CVA3B-2" W-73 X No Recordable Indications 10-010 R-A R1.11 2CV-05 2CVA3B-2" W-80 X No Recordable Indications 10-011 R-A R1.11 2CV-05 2CVA3B-2" W-81 X No Recordable Indications 

   -        R-A     R1.11      2CV-05    2CVA3B-2"         W-84.02           X               NRI. Baseline exam for valve
                                                                     ,,_                     replacement 10-013       R-A     R1.11      2CV-08    2CVA5AA-2"        W-06                          X   No Recordable  Indications 10-014       R-A     R1.11      2CV-08    2CVA5AA-2"        W-07                          X   No Recordable  Indications 10-015       R-A     R1.11      2CV-11    2CVA6AA-2"        W-04                          X   No Recordable  Indications 10-016       R-A     R1.11      2CV-11    2CVA6AA-2"        W-05                       I X    No Recordable  Indications 10-130       R-A     R1.11      2RC-37    2CVA7AA-2"        W-06                          X   No Recordable  Indications 10-131       R-A     R1.11      2RC-37    2CVA7AA-2"        W-07                          X   No Recordable  Indications 10-132       R-A     R1.11      2RC-37    2CVA7AA-2"        W-08                          X   No Recordable  Indications Page 2 of 12

Exelon Byron Unit 2 Welds / Components B2R10 

                                  ,OUTAGE INSPECTION

SUMMARY

SYSTEM. INTERVAL: PERIOD Feedwater (FW) Second Second OBS ,CODE,,, SOE1I COMPONENTILINE 'COMPONENTIWELD  :ýEXAMTYPE NOTE NUMBER CATEGORY 6iDENiFICATION NUMBERk SUR VOLý VIS I__________________ 10-020 R-A R1.11 2FW-02 2FW03DA-16" C01 X No Recordable Indications 10-021 R-A R1.11 2FW-02 2FW03DA-16" C02 X No Recordable Indications 10-043 AUG HELB 2FW-11 2FW81BA-6" C05 X No Recordable Indications 10-044 AUG HELB 2FW-11 2FW81BA-6" C06 X No Recordable Indications 10-045 R-A R1.11 2FW-11 2FW81BA-6" C07 X No Recordable Indications 10-057 AUG HELB 2FW-12 2FW81BD-6" C05 X I No Recordable Indications 10-058 AUG HELB 2FW-12 2FW81BD-6" C06 X No Recordable Indications 10-059 R-A R1.11 2FW-12 2FW81BD-6" C07 X No Recordable Indications 10-046 R-A R1.11 2FW-11 2FW87CA-6" C01 X No Recordable Indications 10-047 R-A R1.11 2FW-11 2FW87CA-6" C02 X No Recordable Indications 10-048 R-A R1.11 2FW-11 2FW87CA-6" C03 X No Recordable Indications 10-060 R-A R1.11 2FW-12 2FW87CD-6" C01 X I No Recordable Indications 10-061 R-A R1.11 2FW-12 2FW87CD-6" C02 X No Recordable Indications 10-062 R-A R1.11 2FW-12 2FW87CD-6" C03 X ID Geometry II __ I _ _ ] _ _ _ _ _ _ _ I _ _ _ _ _~_ I__ _ _ __ _ _ _ _ _ _ _ _ _ _ _ Page 3 of 12

Exelon Byron Unit 2 Welds / Components B2R10 OUTAGE INSPECTION

SUMMARY

SYSTEM. INTERVAL: PERIOD. Main Steam (MS) Second Second 

   .T. OB* * .OMTI,COD
  • I'iEM liOME'TRIC ODE DE* DNIIA"O COMPONENTILINE * ** .

COMPONENT. I WELD 

                                                                                     */"'         EXAM TYPE         .. t*:,. . ' , NZ*
                                                                                                                                    *O* "T.E "S !@,

NOTES L* .. NUMBER CATEGORY -VIS IDENTIFICATION NUMBER SUR VOL 10-069 C-C C3.20 2MS-03 2MS01AA-301/4" E-2 X No Recordable Indications 10-070 C-C C3.20 2MS-03 2MS01AA-301/4" E-3 X No Recordable Indications 

        +

__I__I__I 

                 +              +         1-I
                                                                   -t bIIzI__________

1- 4 -I- -I- 4 4-1-1-4 ____ 4 _____ 4 _____ 4 - -I--I I-4 4- 4 4 *I- + -I--I-t-.t 1 4 4 4 -1 4 4 4 4 4 +-1-I-4 4 + 4 4 4 tt11 4 4 4 4 4 4 4 4 4 1 4-t1-4 4 4 4 4 1 4-4--I I 4 4 4 4 1 4-t-11 ____ 4 _____ 4 _____ 4 _____ 4 I 4-4------I I 4 4 4 4 1 4 4 4 4 1 4 4 4 4 I 4 4 4 4 I 4-t-1t ______ 4 1 -1 1 I 4-4-1-I - I1 I I Page 4 of 12

Exelon Byron Unit 2 Welds / Components B2R10 OUTAGE INSPECTION

SUMMARY

SYSTEM INTERVAL: PERIOD: Pressurizer Surge (RY) Second Second uOCBS.. COD ATEG.O RY 

                    *           , ISOMETRIC CODE ITEM*I  ....      ..    ...   . .N.....O..T'E....... COMPONENTIWELD
                                               ;COMPONENTIUNE                                 ...         EXAM TYPE      . .   .. ...... ,**. NOTESS ...... . .. ...

NUMBER CATEGORY "",,IDENTIFICATION NUMBER SUR VOL VIS ________,..-__-______ 10-083 R-A R1.11 2RC-16 2RY01B-6" J28 X No Recordable Indications 10-084 R-A R1.11 2RC-16 2RY01B-6" J29 X No Recordable Indications 10-085 R-A R1.11 2RC-16 2RY01B-6" J30 X No Recordable Indications 10-106 R-A R1.15 2RC-32 2RY03AA-6" J01 X No Recordable Indications 10-107 R-A R1.20 2RC-32 2RY03AA-6" J02 X No Recordable Indications 10-108 R-A R1.20 2RC-32 2RY03AA-6" J03 X No Recordable Indications 10-109 R-A R1.20 2RC-32 2RY03AA-6" J04 X No Recordable Indications 10-110 R-A R1.15 2RC-32 2RY03AB-6" J01 X No Recordable Indications 10-111 R-A R1.20 2RC-32 2RY03AB-6" J02 X No Recordable Indications 10-112 R-A R1.20 2RC-32 2RY03AB-6" J03 X No Recordable Indications 10-113 R-A R1.20 2RC-32 2RY03AB-6" J04 X No Recordable Indications 10-114 R-A R1.15 2RC-32 2RY03AC-6" J01 X No Recordable Indications 10-115 R-A R1.20 2RC-32 2RY03BA-6" J01 X No Recordable Indications 10-001 R-A R1.11 2CV-02 2RY18A-2" W-01 I X No Recordable Indications 10-002 R-A R1.11 2CV-02 2RY18A-2" W-02 X No Recordable Indications 10-003 R-A R1.11 2CV-02 2RY18A-2" W-03 X No Recordable Indications 10-004 R-A R1.11 2CV-02 2RY18A-2" W-04 X No Recordable Indications 

         +            +          +          -f                                                    4-1             t--t 4            4          4          4                                4                    4--1-I-4
         +            +          4          +                                4                    1-1-I-t 4            4          4          4                                4                    4-1             I-4 4            4          4          4                                4                    4-1-1-4 4            4          4          4                                -1                   4-1-1-4 4            4          4          4                                4                    4-l-I-4 4            4          -1         4                                -1                   4-1-1-4

____ 4 _____ 4 4 4 4 4-I I-4 4 4 4 4 4 4-1-I--I 4 4 4 4 -I 4-I--I-I 4 4 4 4 4 4-I--I-I 4 4 4 4 4 tt11 4 4 4 4 I 4 4 4 4 1 4-tII 4 4 4 4 I 4-1--I-I ______ 4 _______ .1_______ .1 1 1 I I Page 5 of 12

Exelon Byron Unit 2 Welds / Components B2R10 OUTAGE INSPECTION

SUMMARY

SYSTEM: INTERVAL* PERIOD: Reactor Coolant (RC) Second Second CODE COOR COMPONENTILINE COMPONENT I WELD

  • EXAM TYPE NOTES NUMBER CATEGORY /o IDENTIFICATNI NUMBER SUR VOL VIS ... _.....__....... _........ ______

10-076 R-A R1.20 2RC-01 2RC01AA-29" J06 X No Recordable Indications 10-077 R-A R1.20 2RC-01 2RC03AA-271/2" J02A X No Recordable Indications 10-078 R-A R1.20 2RC-01 2RC03AA-271/2" J04 X No Recordable Indications 10-096 R-A R1.20 2RC-30 2RC13AA-2" W-01 X No Recordable Indications 10-097 R-A R1.20 2RC-30 2RC13AA-2" W-02 X No Recordable Indications 10-098 R-A R1.20 2RC-30 2RC13AA-2" W-03 X No Recordable Indications 10-099 R-A R1.20 2RC-30 2RC13AA-2" W-04 X No Recordable Indications 10-100 R-A R1.20 2RC-30 2RC13AA-2" W-05 X No Recordable Indications 10-101 R-A R1.20 2RC-30 2RC13AB-2" W-01 X No Recordable Indications 10-102 R-A R1.20 2RC-30 2RC13AC-2" W-01 X No Recordable Indications 10-103 R-A R1.20 2RC-30 2RC13AD-2" W-01 X No Recordable Indications 10-116 R-A R1.11 2RC-36 2RC14AA-2" W-01 X No Recordable Indications 10-117 R-A R1.11 2RC-36 2RC14AA-2" W-01A X No Recordable Indications 10-118 R-A R1.11 2RC-36 2RC14AA-2" W-01B X No Recordable Indications 10-119 R-A R1.11 2RC-36 2RC14AA-2" W-01C X No Recordable Indications 10-120 R-A R1.11 2RC-36 2RC14AA-2" W-02 X No Recordable Indications 10-121 R-A R1.11 2RC-36 2RC14AA-2" W-03 X No Recordable Indications 10-122 R-A R1.11 2RC-36 2RC14AA-2" W-04 X No Recordable Indications 10-123 R-A R1.11 2RC-36 2RC14AA-2" W-05 X No Recordable Indications 10-124 R-A R1.11 2RC-36 2RC14AA-2" W-06 X No Recordable Indications 10-125 R-A R1.11 2RC-36 2RC14AA-2" W-07 X No Recordable Indications 10-126 R-A R1.11 2RC-36 2RC14AA-2" W-08 X No Recordable Indications 10-127 R-A R1.11 2RC-36 2RC14AA-2" W-09 X No Recordable Indications 10-128 R-A R1.11 2RC-36 2RC14AA-2" W-10 X No Recordable Indications 10-129 R-A R1.11 2RC-36 2RC14AA-2" W-11 X No Recordable Indications 10-133 R-A R1.11 2RC-41 2RC16AA-2" W-03 X No Recordable Indications 10-134 R-A R1.11 2RC-41 2RC16AA-2" W-04 X No Recordable Indications 10-135 R-A R1.11 2RC-41 2RC16AA-2" W-05 X No Recordable Indications 10-136 R-A R1.11 2RC-41 2RC16AA-2" W-06 X No Recordable Indications 10-137 R-A R1.11 2RC-41 2RC16AA-2" W-07 X No Recordable Indications 10-138 R-A R1.11 2RC-41 2RC16AB-2" W-04 X No Recordable Indications 10-139 R-A R1.11 2RC-41 2RC16AB-2" W-05 X No Recordable Indications 10-094 R-A R1.20 2RC-29 2RC16AC-2" W-08 X No Recordable Indications 10-095 R-A R1.20 2RC-29 2RC16AD-2" W-01 X No Recordable Indications 10-079 R-A R1.20 2RC-06 2RC21AA-8" J02 X No Recordable Indications 10-080 R-A R1.20 2RC-06 2RC21AA-8" J03 X I No Recordable Indications 10-081 R-A R1.11 2RC-06 2RC21AA-8" J05 X No Recordable Indications 10-082 R-A R1.11 2RC-06 2RC21AA-8" J06 X I No Recordable Indications Page 6 of 12

Exelon Byron Unit 2 Welds / Components B2RI0 OUTAGE INSPECTION

SUMMARY

SYSTEM. INTERVAL: PERIOD Reactor Coolant (cont'd) Second Second 0...O. CODEIEM ISOMETDRIC COMPONENTILINE, COMPONENT/WELD H,%EXAMTYPE *OTES NUMBER CATEGORY IDENTIFICATION NUMBER ýSUR VOLT VIS _________________ 10-090 R-A R1.20 2RC-27 2RC22AA-1Y" W-01 X No Recordable Indications 10-091 R-A R1.20 2RC-27 2RC22AA-11/2" W-05 X No Recordable Indications 10-092 R-A R1.20 2RC-27 2RC22AC-11/2" W-01 X No Recordable Indications 10-093 R-A R1.20 2RC-27 2RC22AC-11/2" W-06 X No Recordable Indications 10-087 R-A R1.20 2RC-20 2RC22AD-11/2" W-01 X No Recordable Indications 10-088 R-A R1.20 2RC-20 2RC22AD-11/2" W-08 _ X No Recordable Indications 10-104 R-A R1.20 2RC-31 2RC26A-2" W-01 X No Recordable Indications 10-105 R-A R1.20 2RC-31 2RC26A-2" W-02 X No Recordable Indications 10-159 R-A R1.11 2SI-31 2RC30AA-1Y" W-01 X No Recordable Indications 10-143 R-A R1.20 2SI-02 2RC35AA-6" J02 X No Recordable Indications 10-144 R-A R1.20 2SI-02 2RC35AA-6" J03 X No Recordable Indications 10-145 R-A R1.11 2SI-02 2RC35AA-6" J04 X No Recordable Indications 10-146 R-A R1.11 2SI-02 2RC35AA-6" J05 X -No Recordable Indications 

   -         AUG       RG1.14    2RCP-1     2RC-01-PC              Flywheel            X                      No Recordable       Indications.

Flywheel removed for maintenance. 1- 1- 1- 1- 4 4- 4- 4- 1- 4 t--t-t-4 I- I- 4- -I- 4 4--I-1-4 4- 4- 4 4 4 4t1t 4- 4- 4 *I- 4 4- 4- 1- 4 4 I--I I-t 4- 4- -I- 4 4 4--I-1---4 4- 4- + 4 4 4--I 1-4 1- J- -I- 4- 4 I----I-1-4 4- + 4 4 -t 1--I-t-4 4- 4- 4- 4 4 4--I I-4 4- + 4 4 -t 4--I-t-t 

         -I-        4-         4          4                     4                 4--I-I----4 4          4          4          4                     4                 t-I-t--t 4-         4-         4          4                     4                 4-1-1-4

_____I Page 7 of 12 1.I -,__________

Exelon Byron Unit 2 Welds / Components B2R10 OUTAGE INSPECTION

SUMMARY

SYSTEM INTERVAL: PERIOD: Reactor Pressure Vessel (RPV) Second Second 085§ CODEý C0- I--, S COMPONEýNTILINE COMPONENT/WELD ,EXAM TYPE NOTES NUMBER CATEGORY COET MISMERC , IDENTIFICATION NUMBER SUJR VOL IVIS _________________ 10-140 B-G-2 B7.10 2RPV-3 2RC-01-R CLAMPS 1-10 X No Recordable Indications 10-141 B-A B1.40 2RPV-3 2RC-01-R RVHC-01 X X No Recordable Indications. Limited exam, Ref: 12R-25 ____. ____1___ I ___ I I- I I I I I I I I I I I I I I I I I I I I I I I I I--F-I--I I I I I I- I-*t--t-t-I I I I 4- I--I-I--I-I I I I f 

        £             I        I            I                     4-I             I        I            I                     I-                I-I--f-I-I             I        I-           I                     4-                I-I--t-t I             I-        I-          I-                    I-                I-I--f-i-I             i-        I-          -                     4-                4 I             4-        4-          4-                    +                 I-I-t-t Page 8 of 12

Exelon Byron Unit 2 Welds / Components B2R10 

                                                     , OUTAGE INSPECTION

SUMMARY

SYSTEM INTERVAL* PERIOD: Residual Heat Removal (RH) Second Second OBS 

                        /

A Signed For: Exelon Generation Company By: /*/14e -kkN) Kca CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT. have inspected the components described this Owner's Report during the period 04122101 to 10107102, and state that to the best of my knowledge and belief, the owner has performed examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in the Owner's Report. Futhermore, neither the inspector nor his employer shall be liable in any manner for any personal injury or property damage or loss of any kind arising from or connected with this inspection. Inspectors Signature Commissions: ILL-1254 Date: __ , 20 P National Board, State, Province, and Endorsements Form Page 23 of 23 Generated Form Computer Generated Computer Page 23 of 23

Exern.. BYRON STATION UNIT 2 B2R10 ISI OUTAGE REPORT FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 1 of 6)

1. Owner: Exelon Generation Company, (LLC), 200 Exelon Way, Kennett Square, PA 19348 (Name and Address of Owner)
2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant)
3. Plant Unit: 2 4. Owner Certificate Of Authorization N/A
5. Commercial Service Date: 08/21/87 6. National Board Number for Unit: N-200,
7. Components Inspected: Containment Spray System (CS)

Component Supports examined In accordance with Code Case N-491-1 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 in. x 11 In., (2) information in items 1 through 6 of this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. Computer Generated Form

Exekn_ BYRON STATION UNIT 2 B2R10 ISI OUTAGE REPORT FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 2 of 6)

1. Owner: Exelon Generation Company, (LLC), 200 Exelon Way, Kennett Square, PA 19348 (Name and Address of owner)
2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant)
3. Plant Unit: 2 4. Owner Certificate Of Authorization N/A
5. Commercial Service Date: 08/21/87 6. National Board Number for Unit: N-200
7. Components Inspected: Chemical & Volume Control System (CV)

Component or Compnen orManuactreror Manufacturer Installer Manufacturer State or National Appurtenance or Installer I Serial No. Province No. Board No. SUPPORT HUNTER CORPORATION 2CV05B- N/A N/A 8/2CV08035X SUPPORT HUNTER CORPORATION 2CV05B- N/A N/A 8/2CV47003X SUPPORT HUNTER CORPORATION 2CV05CB-' N/A N/A 6/2CV08001X SUPPORT HUNTER CORPORATION 2CV08BA- N/A N/A 4/2CVO1A007X Component Supports examined in accordance with Code Case N-491-1 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 112 In.x 11 in, (2)information In items 1 through 6 of this report Is Included on each sheet, and (3) each sheet Is numbered and the number of sheets is recorded at the top of this form. Computer Generated Form

Exelon. 

                                                                                                         "BYRONSTATION UNIT 2 B2R10 ISI OUTAGE REPORT FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 3 of 6)
1. Owner: Exelon Generation Company, (LLC), 200 Exelon Way, Kennett Square, PA 19348 (Name and Address of Owner)
2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant)
3. Plant Unit: 2 4. Owner Certificate Of Authorization N/A
5. Commercial Service Date: 08/21/87 6. National Board Number for Unit: N-200
7. Components Inspected: Reactor Coolant System (RC)

Component or Manufacturer Manufacturer State or National Component Manufacturer or or Installer Appurtenance or Installer Serial No. Province No. Board No. SNUBBER PACIFIC SCIENTIFIC 2RC14AC- N/A N/A 2/2CV09028S SNUBBER PACIFIC SCIENTIFIC 2RC14AC- N/A N/A 2/2CV09029S SNUBBER PACIFIC SCIENTIFIC 2RC16AD- N/A N/A 2/2CV14001S SNUBBER PACIFIC SCIENTIFIC 2RC22AA- N/A N/A 1.5/2RC16002S SNUBBER PACIFIC SCIENTIFIC 2RC22AA- N/A N/A 1.5/2RC16011S SNUBBER PACIFIC SCIENTIFIC 2RC22AA- N/A N/A 1.5/2RC16012S SUPPORT HUNTER CORPORATION 2RC37A- N/A N/A 3/2CV02001X Component Supports examined in accordance with Code Case N-491-1 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 In. x 11 In., (2) information in items 1 through 6 of this report Is included on each sheet, and (3) each sheet is numbered and the number of sheets Is recorded at the top of this form. Computer Generated Form

Exeln. BYRON STATION UNIT 2 B2R10 IS[ OUTAGE REPORT FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 4 of 6)

1. Owner: Exelon Generation Company, (LLC), 200 Exelon Way,, Kennett Square, PA 19348 (Name and Address of Owner)
2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant)
3. Plant Unit: 2 4. Owner Certificate Of Authorization N/A
5. Commercial Service Date: 08/21/87 6. National Board Number for Unit: N-20,
7. Components Inspected: Residual Heat Removal System (RH)

Component or ManufManufacturer State or National or Installer Poic o or No. Board o Appurtenance or Installer Serial No. Province No. SUPPORT HUNTER CORPORATION 2RH01AA- N/A N/A 12/2RH02058X SNUBBER PACIFIC SCIENTIFIC 2RH01AA- N/A N/A 12/2RH02059S SNUBBER PACIFIC SCIENTIFIC 2RH01AA- N/A N/A 12/2RH02068S SUPPORT HUNTER CORPORATION 2RH02AA- N/A NIA 8/2RH07004R SUPPORT HUNTER CORPORATION 2RH02AA- N/A N/A 8/2RH07009X _ SUPPORT HUNTER CORPORATION 2RH02AA- N/A N/A 8/2RH07016V SUPPORT HUNTER CORPORATION 2RH03AA- N/A N/A 8/2RHO101OX Component Supports examined In accordance with Code Case N-491-1 11 in., Note: Supplemental sheets In form of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 in. x (2) information in items I through 6 of this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. Computer Generated Form

Exelon. BYRON STATION UNIT 2 1B2R10 ISI OUTAGE REPORT FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 5 of 6)

1. Owner: Exelon Generation Company, (LLC), 200 Exelon Way, Kennett Square, PA 19348 (Name and Address of Owner)
2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant)
3. Plant Unit: 2 4. Owner Certificate Of Authorization N/A
5. Commercial Service Date: 08/21/87 6. National Board Number for Unit: N-200
7. Components Inspected: Safety Injection System (SI)

Component Supports examined in accordance with Code Case N-491-1 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 in. x 11 in., (2) information In Items 1 through 6 of this report is Included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. Computer Generated Form

Exelkn. BYRON STATION UNIT 2 B2RI0 ISI OUTAGE REPORT FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 6 of 6) (BACK)

8. Examination Dates 04/22/01 to 10/07/02
9. Inspection Interval: 08/16/98 to 08/21/07
10. Abstract of Examination.

Include a list of examinations and a statement concerning status of work required for current interval. Refer to the Outage Summary Report and ISI Program Plan

11. Abstract of Conditions Noted.

Refer to the Outage Summary Report

12. Abstract of Corrective Measures Recommended and Taken.

Refer to the Outage Summary Report We certify that the statements made in this report are correct and the examination and corrective measures taken conform to the rules of ASME Code, Section Xl. Certificate of Authonzation No (ifapplicable) N/A Experation Date N/A Date: t/1/6. Signed for:Exelon Generation Company By: 4g4 J./v 6-1)AC 

                                                   ý                     /

CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commision issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford CT. have inspected the components described in this Owner's Report during the period 04/22/01 to 10/07/02 , and state that to the best of my knowledge and belief, the Owner has performed examinations and tests and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations, tests, and corrective measures described in this Owner's Report. Futhermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or conLiected with this inspection. 

                                              Inspectors Signature Commissions:               ILL-1254                Date:         /_

_ _ _ 20 15 National Board, State, Province, and Endorsements Computer Generated Form

Exelon. Byron Station Unit 2 B2R10 ISt Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 1 of 11)

1. Owner: Exelon Generation Company,(LLC), 200 Exelon Way, Kennett Square, PA 19348 1Name and Address of Owner)
2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant)
3. Plant Unit: 2 4. Owner Certificate Of Authorization N/A
5. Commercial Service Date: 08/21/87 6. National Board Numberfor Unit: N-200'
7. Components Inspected: Containment Spray System (CS)

Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size Is 8 1/2 in. x 11 in., (2) information in items I through 6 of this report is included on each sheet, and (3) each sheet Is numbered and the number of sheets Is recorded at the top of this form. Computer Generated Form

Exelkn. Byron Station Unit 2 B2R10 ISI Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 2 of 11)

1. Owner: Exelon Generation Company,(LLC), 200 Exelon Way, Kennett Square, PA 19348 (Name and Address of Owner)
2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant)
3. Plant Unit: 2 4. Owner Certificate Of Authorization N/A
5. Commercial Service Date: 08/21/87 6. National Board Number for Unit: N-200
7. Components Inspected: Chemical & Volume Control System (CV)

Component or Manufacturer Manufacturer State or National Appurtenance or Installer or Installer Province No. Board No. _______ ___ ____ ___ ___ Serial No. SNUBBER PACIFIC SCIENTIFIC 2CV02006S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2CV04002S N/A N/A SNUBBER PACIFIC SCIENTIFIC 20CV04012S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2CV04015S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2CV060045 N/A N/A SNUBBER PACIFIC SCIENTIFIC 2CV08006S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2CV08010S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2CV08011S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2CV08013S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2CV15055S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2CV220025S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2CV22009S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2CV23005S N/A N/A Note- Supplemental sheets In form of lists, sketches, or drawings may be used, provided (1) size is 8 112 in. x 11 in.. (2) information in items I through 6 of this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. Computer Generated Form

Exeln.. Byron Station Unit 2 B2R10 ISI Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE I INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 3 of 11)

1. Owner: Exelon Generation Company,(LLC), 200 Exelon Way, Kennett Square, PA 19348 (Name and Address of Owner)
2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant)
3. Plant Unit: 2 4. Owner Certificate Of Authorization N/A
5. Commercial Service Date: 08/21/87 6. National Board Number for Unit: N-200
7. Components Inspected: Chemical & Volume Control System (CV)

Component or Manufacturer Manufacturer State or National Appurtenance or Installer Serialler Province No. Board No. SNUBBER PACIFIC SCIENTIFIC 2CV25012S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2CV31020S NIA N/A SNUBBER PACIFIC SCIENTIFIC 2CV36006S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2CV40007S N/A N/A Note: Supplemental sheets In form of lists, sketches, or drawings may be used, provided (1) size is 8 112 in. x 11 in., (2) information in items I through 6 of this report Is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. Computer Generated Form

Exelkn. Byron Station Unit 2 B2R10 ISI Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME C6de Rules (Page 4 of 11)

1. Owner: Exelon Generation Company,(LLC), 200 Exelon Way, Kennett Square, PA 19348 (Name and Address of Owner)
2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant)
3. Plant Unit: 2 4. Owner Certificate Of Authorization N/A
5. Commercial Service Date: 08/21/87 6. National Board Number for Unit: N-200
7. Components Inspected: Feedwater System (FW)

Manufacturer SttorNina Component or Manufacturer State or National Appurtenance orInstor Installer Province No. Board No. Appurtenanceor InstallerSerial No. ________ SNUBBER PACIFIC SCIENTIFIC 2FW06013S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2FW07005S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2FW07006S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2FW07014S N/A N/A Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 in. x 11 in., (2) information in items 1 through 6 of this report is Included on each sheet, and (3) each sheet Is numbered and the number of sheets is recorded at the top of this form. Computer Generated Form

Exelon. Unit 2 Byron Station B2R10 ISI Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 5 of 11)

1. Owner: Exelon Generation Company,(LLC), 200 Exelon Way, Kennett Square, PA 19348 (Name and Address of Owner)
2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant)
3. Plant Unit: 2 4. Owner Certificate Of Authorization N/A
5. Commercial Service Date: 08/21/87 6. National Board Number for Unit: N-200,
7. Components Inspected: Main Steam System (MS)

Component or Manufacturer Manufacturer State or National Appurtenance orInstor Installer Province No. Board No. Appurtenanceor InstallerSerial No._______ SNUBBER PACIFIC SCIENTIFIC 2MS01106S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2MS05007-S1 N/A N/A SNUBBER PACIFIC SCIENTIFIC 2MS05007-$2 N/A N/A Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 112 in. x 11 in., (2) information in items 1 through 6 of this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. Computer Generated Form

Exelkn. Byron Station Unit 2 B2R10 ISI Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 6 of 11)

1. Owner: Exelon Generation Company,(LLC), 200 Exelon Way, Kennett Square, PA 19348 (Name and Address of Owner)
2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant)
3. Plant Unit: 2 4. Owner Certificate Of Authorization NIA
5. Commercial Service Date: 08/21187 6. National Board Number for Unit: N-200
7. Components Inspected: Reactor Coolant System (RC)

Component or Manufacturer Manufacturer State or National Appurtenance or Installer or Installer Serial No. Province No. Board No. SNUBBER PACIFIC SCIENTIFIC 2CV09034S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2CV11003S N/A N/A SNUBBER BOEING 2RC01 BA-A N/A N/A SNUBBER PACIFIC SCIENTIFIC 2RC16002S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2RC16004S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2RC16006S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2RC90B008S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2RC90CO15S N/A N/A Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 in x 11 in., (2) information in items 1 through 6 of this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. Computer Generated Form

Exekrn. Byron Station Unit 2 B2R10 ISI Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 7 of 11)

1. Owner: Exelon Generation Company,(LLC), 200 Exelon Way, Kennett Square, PA 19348 (Name and Address of Owner)
2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant)
3. Plant Unit: 2 4. Owner Certificate Of Authorization N/A
5. Commercial Service Date: 08/21/87 6. National Board Number for Unit: N-200"
7. Components Inspected: Residual Heat Removal System (RH)

Component or Manufacturer Manufacturer State or National Appurtenance or Installer or Installer Province No. Board No. Serial No. SNUBBER PACIFIC SCIENTIFIC 2RH02003S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2RH02013S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2RH02059S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2RH02115S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2RH02116S N/A . N/A SNUBBER PACIFIC SCIENTIFIC 2RH02117S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2RH02120S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2RH02121S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2RH07017-S1 N/A N/A SNUBBER PACIFIC SCIENTIFIC 2RH07017-$2 N/A N/A Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 in. x 11 In., (2) information in items 1 through 6 of this report is Included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. Computer Generated Form

Exeon.. Byron Station Unit 2 B2R10 ISI Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Ruies (Page 8 of 11)

1. Owner: Exelon Generation Company,(LLC), 200 Exelon Way, Kennett Square, PA 19348 (Name and Address of Owmer)
2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant)
3. Plant Unit: 2 4. Owner Certificate Of Authorization N/A
5. Commercial Service Date: 08/21/87 6. National Board Number for Unit: N-200
7. Components Inspected: Reactor Coolant System (RY)

Component or Manufacturer Manufacturer State or National Appurtenance or Installer or Installer Province No. Board No. SNUBBERPACIFICSCIENTIFIC 2Serial No.C9001SNAN SNUBBER PACIFIC SCIENTIFIC 2RC91001S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2RY06011S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2RY09005S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2RY09012S N/A NIA SNUBBER PACIFIC SCIENTIFIC 2RY09078S N/A N/A Note: Supplemental sheets in form of hsts, sketches, or drawings may be used, provided (1) size is 8 1/2 in. x 11 in.. (2) information in items 1 through 6 of this report is included on each sheet, and (3) each sheet Is numbered and the number of sheets is recorded at the top of this form. Computer Generated Form

Exelkn. Byron Station Unit 2 B2R10 ISI Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 9 of 11)

1. Owner: Exelon Generation Company,(LLC), 200 Exelon Way, Kennett Square, PA 19348 (Name and Address of Owner)
2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant)
3. Plant Unit: 2 4. Owner Certificate Of Authorization N/A
5. Commercial Service Date: 08/21/87 6. National Board Number for Unit: N-200"
7. Components Inspected: Steam Generator Blowdown System (SD)

Component or Manufacturer Manufacturer State or National Appurtenance or Installer Serialler Province No. Board No. SNUBBER PACIFIC SCIENTIFIC 2SD01003S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2SD01005S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2SD05002-S1 N/A N/A SNUBBER PACIFIC SCIENTIFIC 2SD05002-$2 N/A N/A SNUBBER PACIFIC SCIENTIFIC 2SD06001S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2SD21034S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2SD21036S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2SD24026S N/A N/A Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 in. x 11 in., (2) information in items I through 6 of this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. Computer Generated Form

  • Exelen.

Byron Station Unit 2 B2R10 ISI Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 10 of 11)

1. Owner: Exelon Generation Company,(LLC), 200 Exelon Way, Kennett Square, PA 19348 (Name and Address of Owner)
2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant)
3. Plant Unit: 2 4. Owner Certificate Of Authorization N/A
5. Commercial Service Date: 08/21/87 6. National Board Number for Unit: N-200
7. Components Inspected: Safety Injection System (SI)

Component or Manufacturer Manufacturer State or National Appurtenance or Installer or Installer, Province No. Board No. Serial No. SNUBBER PACIFIC SCIENTIFIC 2SI03001S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2SI06266S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2SI13027S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2SI18A049S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2SI120003S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2SI22018S N/A N/A SNUBBER PACIFIC SCIENTIFIC 2SI22020S N/A N/A Note: Supplemental sheets inform of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 in. x 11 In., (2) information in items 1 through 6 of this report is included on each sheet, and (3) each sheet is numbered and the number of sheets Is recorded at the top of this form. Computer Generated Form

Exelen. Byron Station Unit 2 B2R10 ISI Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 11 of 11) (BACK)

8. Examination Dates 04/22/01 to 10/07/02
9. Inspection Interval: 08/16/98 to 08121/07
10. Abstract of Examination.

Include a list of examinations and a statement concerning status of work required for current interval. Refer to the Outage Summary Report and ISI Program Plan

11. Abstract of Conditions Noted.

Refer to the Outage Summary Report

12. Abstract of Corrective Measures Recommended and Taken.

Refer to the Outage Summary Report We certify that the statements made in this report are correct and the examination and corrective measures taken conform to the rules of ASME Code, Section Xl. Certificate of Authorization No. (if applicable) N/A Experation Date N/A Date: (/ /O Signed for: Exelon Generation Company CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commision issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford CT. have inspected the components described in this Owner's Report during the period 04122101 to 10/07102 , and state that to the best of my knowledge and belief, the Owner has performed examinations and tests and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations, tests, and corrective measures described in this Owner's Report. Futhermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. Inspectors Signature Commissions: ILL-1254 Date: 11_ _ _ ,20 e99 National Board, State, Province, and Endorsements Computer Generated Form

WORK ORDER #00487997-01 ER-AA-330-009 Revision 0 Page 29 of 36 ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section XI Page 1 of 4

1. Owner Exelon Nuclear Date 09/24/02 Name 4300 Winfield Rd. Warrenville, IL 60555 Sheet 1 of 2 Address
2. Plant ByIron Nuclear Power Station Unit 02 Name 4450 N. German Chruch Rd. Byron, IL 61010 WORK ORDER 00487997-01 Address Repajr Organization P.O., Job No., etc
                                           /"ron      ,ohaic'     M,'int,'n¢,nco l*,,/z*
3. Work Performed By Type Code Symbol Stamp Not Applicable 555 S. JOLIET RD. BOLINGBROOK, IL. 60440 Authorization No. Not Applicable Address Expiration Date Not Applicable
4. Identification of System CV SYSTEM
5. (a) Applicable Construction Code Section III 19 74 Edition, S74 Addenda, Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacements 19 89 (c) Section XI code Cases used, N/A
6. Identification of Components Repaired or Replaced and Replacement Components ASME Name of Manufacturer National Other Year Repaired, Code Name of Serial No. Board Identification Built Replaced, or Stamped Component Manufacturer No. Replacement (Yes or No)

SNUBBER SNUBBER PACIFIC ESCIENTIFIC 13061 N/A 2CV04002S 1981 REPLACED YES SNUBBER UISEGA 01615143/008 N/A 2CV04002S 2001 REPLACEMENT YES

7. Description of Work REPLACE FAILED SNUBBER.
8. Test Conducted: Hydrostatic [] Pneumatic [] Nominal Operating Pressure EL VT-3 Other Z_ Pressure psi Test Temp. __OF

. NOTE: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 112 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

r -11 M-7 -r r -Irý- I ER-AA-330-009 Revision 0 Page 30 of 36 ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section XI Page 2 of 4

9. Remarks Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this replacement conform to the repair or replacement rules of the ASME Code, Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Signed 4 ý Cfelr Scott Esposito Owner's Designee, Title Date I - Z ,20 6-2_ CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State of Province of Illinois and'employed by H.S.B. CT. of Hartford, CT. Have inspected the components described in this Owner's Report during the period n*aI'"' t , , and state that to the best of my knowledge and belief, thM ner has perfo'rmed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property dam age or a loss of any kind arising from or connected with this inspection. __ __ __ ___,__ __ Commissions _ _ _. _,-__ IV inspectors Signature National Board, State. Province, and Endorsements Date /,20w / ,20 PA*

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 09/26/02 Name 4300 Winfield Rd. Warrenville, I1.60555 Sheet I of 1 Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, 11. Work Request No. 384592-01 Address Repatr Organization, P.O. No. Job No., etc.
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, 11. Expiration Date Not Applicable Address
4. Identification of System CV
5. (a) Applicable Construction Code Section III 19 86 Edition, 87 Addenda,NO Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and Replacement Components National Repaired, ASME Name of Name of Manufacturer board Other Year Replaced, Code; Stanmped Component Manufacturer Serial No No Identfication Built or Replacement (Yes or No)

VALVE KSB 190884/13 2CV8350 _______________ 122 1990 REPLACED YES VALVE KSB 190884/10 2CV8350 YES 1 119 1990 REPLACEMENT

7. Description of Work REPLACE VALVE LIKE FOR LIKE
8. Test Conducted: Hydrostatic E] Pneumatic [] Nominal Operating Pressure [

Other [I Pressure 2238 psi Test Temp. 559 OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (I) size is 8-1/2 in. x I I in., (2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated.

I I FORM NIS-2 (Back) Remarks Invoked Code Case N-416-1 WO 00384592 --o Applicable Manufacturers&Data Reports to be attached 0 9. CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this Replacement conforms to the rules of the ASME Code, Section XI. repw ,replacement Type Code Symbol Stamp NOT APPLICABLE Certificate of A thorization No. NOT APPLICABLE Expiration Date NOT APPLICABLE Signed ADate /7/ ,20 CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of ILLINOIS and employed by H.S.B. CT. of Hartford, CT. have inspected thecomponents descnbed in this Owner's Report during the period ,_Z/* to , and state that to the best of my knowledge and belief, the Owne( has performed examinations an takn orrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XL. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for iny personal injury or property damage or a loss of any kind arising from or connected with this inspectioo ~ ,~ Commissions /Z',-/ ."V 

                          -- rnsm6 Sir="                                                                  Naral     Ue ?romance.
                                                                                                                 .uGd.         ad Wadorneafel Date                7     _ ,20 9f(

ER-AA-330-009 Revision 0 Page 32 of 36 ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section XI Page I of 4

1. Owner Exelon Nuclear Date 9-24-02 Name 4300 Winfield Road, Warrenville, II. Sheet 1 of 2 Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron WORK ORDER: 00486642-01 Address Repair Organization P.O., Job No., etc
3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Authorization No. Not Applicable 555 S. Joliet Rd, Bolingbrook, IL.60440 Expiration Date Not Applicable Address
4. Identification of System CHEMICAL VOLUME & CONTROL SYSTEM 5 (a) Applicable Construction Code ASME SECTION III 1974 Edition, S74 Addenda, Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacements 1989 (c) Section XI code Cases used, NONE
6. Identification of Components Repaired or Replaced and Replacement Components ASME Name of National Repaired, Code Name of Manufacturer Manufacturer Board Other Year Replaced, or Stamped Component Serial No. No. Identification Built Replacement (Yes or No._ No)

SNUBBER, PACIFIC- 1537 N/A 2CV04012S 1977 Replaced YES PSA-1 SCIENTIFIC SNUBBER, LISEGA 02615163/012 N/A 2CV04012S 2002 Replacement YES 303856RF1

7. Description of Work REPLACED SNUBBER
8. Tests Conducted: Hydrostatic E] Pneumatic [3 Nominal Operating Pressure El V T_-'3 Other nl Pressure _ psi Test Temp.. F NOTE: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1)size is 8 / in. x 11 in., (2) information in items I through 6 on this report is included on each sheet, and (3)each sheet is numbered and the number of sheets is recorded at the top of this form.

ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section XI Page 2 of 4

9. Remarks Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and replacement conform to the repair or replacement rules of the ASME Code, Section XI.

Type Code Symbol Stamp ,x, Certificate of Authorization No. **14 Signed Scott Esposito X/, Date 9-29-2002 Owner or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Ve, nsp ,crs and the State of Province of Z//. and employed by //;'5 C-r o nave inspected the components described in this Owner's Report during the period ,Ato 

   ;r    and state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damagp or a loss of any kind arising from or connected with this inspection. 9* =' Commissions /______ ______ Inspector's Signature National Board, State, Province, and Endorsements Date 0._0, 'IQ.OW7-

ER-AA-330-009 Revision 0 Page 27 of 36 ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section X1 Page 1 of 4

1. Owner Exelon Nuclear Date 09/20/02 Name 4300 Winfield Rd. Warrenville, IL 60555 Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Chruch Rd. Byron, IL 61010 a -Organa on P.o .

Address Repair(Organization P.O., Job No., etc

3. Work Performed By Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable 4450 N. German Chruch Rd. Byron, IL 61010 Authorization No. Not Applicable Address Expiration Date Not Applicable
4. Identification of System CHEMICAL FEED & VOLUME CONTROL (CV)
5. -(a) -Applicable Construction Code .Section III 19 71 Edition, S/7Addenda, N/A Code Case

_ _N/3ACdCa (b) Applicable Edition of Section XI Utilized for Repairs or Replacements 19 89 (c) _ Section X1 code Cases used, NIA

6. Identification of Components Repaired or Replaced and Replacement Components ASME Repaired, Code Name of Name of Manufacturer National Other Year Replaced, or Stamped Component Manufacturer Serial No. Board Identification Built Replacement (Yes or No. N or Studs Westinghouse NIA o N/A ETN; 2CV01T 1975 Replaced NO

__________ SN; 455 _ _ _ _ Studs NOVA N/A N/A Cat. Id 16933, 1998 Re'placement NO Studs NOVA N//A Heat # 69463 Nuts Nuts_____ Westinghouse Wetnhue NIA NA* 'NA NSN; 455 ETN; 2CV01T -___1975 Replaced _____NO Cat. Id 37034 Nuts NOVA NIA N/A Heat # 1996 'Replacement NO 8098856 ____________ L _____________ L _____________ L _____________

7. Description of Work Remove/replace bolting material I I
8. Test Conducted: Hydrostatic D Pneumatic [] Nominal Operating Pressure U psi Test Temp. _ OF
                  'JIIA              Other E] Pressure NOTE: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

ER-AA-330-009 Revision 0 Page 28 of 36 ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section XI Page 2 of 4

9. Remarks Work Order 487940-02 Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this replacement conform to the repair or replacement rules of the ASME Code, Section X1.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Signed 

                   -ý<!!ne 0n,, )/,.&j  Owner's Designee, Title Date /c -/L                 ,20 OX CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State of Province of Illinois                       and employed by                 H.S.B. CT.

of Hartford, CT. Have inspected the components described in this Owner's Report during the period 0;4k . to / , and state that to the best of my knowledge and belief, th6 Owner has perf6rmed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section Xl. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. ___ ___ ___ __Commissions _/ZZ__1_7_5_V 

            .- -    Inspectors Signature                                          National Board, State, Province, and Endorsements Date           *                 /'*,l          ,,20z, 20 jOot

ER-AA-330-009 Revision 0 Page 29 of 36 ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section XI Page I of 4

1. Owner Exelon Nuclear Date 9-17-02 Name 4300 Winfield Road, Warrenville, II. Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron WORK ORDER: 00391179-01 Address Repair Organization P.O., Job No., etc
3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Authorization No. Not Applicable 555 S. Joliet Rd, Bolingbrook, IL. 60440 Expiration Date Not Applicable Address
4. Identification of System CHEMICAL VOLUME & CONTROL SYSTEM 5 (a) Applicable Construction Code ASME SECTION III 1974 Edition, S74 Addenda, 1644 Rev. 7, 1682, 1683, 1685, 1686, 1651, 1728, 1729, 1734, N-180, N-108 Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacements 1989 (c) Section Xl code Cases used, NONE
6. Identification of Components Repaired or Replaced and Replacement Components I T 1 T T r ASME Repaired, Code Name of National Name of Manufacturer Other Year Replaced, or Stamped Manufacturer Board Replacement (Yes or Component Serial No. Identification Built No. No)

SNUBBER, PACIFIC- 10054 N/A 2CV11003S 1980 Replaced YES PSA-1 SCIENTIFIC SNUBBER, PACIFIC- 10408 N/A 2CV11003S 1980 Replacement 'YES PSA-1 SCIENTIFIC

7. Description of Work REPLACED SNUBBER
8. Tests Conducted: Hydrostatic E3 Pneumatic [j) Nominal Operating Pressure [3 kVmS_ Other E] Pressure _ psi Test Temp. 0 OF 1

NOTE: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 / in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. 

                                                                                                                          -I ER-AA-330-009 Revision 0 Page 30 of 36 ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section XI Page 2 of 4
9. Remarks Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and replacement conform to the repair or replacement rules of the ASME Code, Section XI.

Type Code Symbol Stamp N/Xt Certifica futorizat*no. , Signed Scott Esposito Date 9-28-2002 wne r Owner's Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Ves ects and the State of Province of 1-//. and employed by ,'f8 er 

 .,__ave          inspected the components described in this Owner's Report during the period "____to and state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or propýert damage or a loss of any kind arising from or connected with this inspection. Commissions /-- Signature National Board. State, Province, and Endorsements Date $'*O, V

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 9/9/02 Name 4300 Winfield Rd. Warrenville, ID.60555 Sheet I of I Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, I. Work Order No. 453292-01 Address Repair Organization, P.O. No, Job No, etc.
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, II. Expiration Date Not Applicable Address
4. Identification of System CV - Chemical & Volume Control
5. (a) Applicable Construction Code Section III 19 71 Edition, S73 AddendaNONE Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and Replacement Components National Repaired, ASME Name of Name of Manufacturer Board Other Year Replaced, Code; Stamped Componern Manufacturer Serial No No Identification Built or Replacement (Yes or No) 2" SA-312 TP 304 Consolidated HT: 29628 2CVOIDA 2002 PIPE Power Supply NIA REPLACEMENT NO 2" SA-182 F304 WFI Nuclear HT: 64OTNE 2CVOIDA 1991 I I S.W. FLANGE Products - N/A REPLACEMENT NO 2" SA-182 F304 Consolidated HT: 1726ANE 2CVO1DA 2002 BLIND FLANGE Power Supply N/A REPLACEMENT NO 5/8"-l 1 BOLTS Nova Machine HT: 67741 2CVOIDA 2001 Products Code NEH N/A REPLACEMENT NO 5/8"-I NUTS Nova Machine HT: B87035 2CVOIDA 2000 Products Code: VCF N/A REPLACEMENT NO 5/8"-] I BOLTS Nova Machine HT: 67741 2CVO1DA 2000 Products Code: NEH N/A REPLACEMENT NO 3 X 2" PIPE Taylor Forge HT: LWQR-2 2CVOIDA 2002 REDUCER Stainless N/A REPLACEMENT NO PIPE 3" SCHED Consolidated HT: 30016 2CV01DA 2002 40 Power Supply N/A REPLACEMENT NO
7. Description of Work INSTALL 2" INSPECTION PORT on Vessel 2CV01DA (s/n N-2308.40, NB no. 73191)
8. Test Conducted: Hydrostatic [] Pneumatic E] Nominal Operating Pressure Z Other [D Pressure 128 psi Test Temp. 108 OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x II in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back)

9. Remarks Invoked Code Case N-416-1 WO 00453292-01 Applicable Manufactrer' Data Reports tObe attached I

CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT conforms to the rules of the ASME Code, Section Xl. ,,, . Type Code Symbol Stamp NOT APPLICABLE Certificate of Authorization No. NOT APPLICABLE Expiration Date NOT APPLICABLE Signed Date /-/; ,20 I CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of ILLINOIS and employed by H.S.B. CT. of Hartford, CT. have inspected the components described in this Owner's Report during the period to e_ , and state that to the best of my knowledge and belief, the Ownef has performed examinations and taken c rrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XL. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. ___ Commissions______ _____ _____ Date 0Eand-. - I .... A2. 

                                                                                                          ; WEe, Date        ýtjl,.? ,20

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 9/21/01 Namne 4300 Winfield Rd., Warrenville, II, 60556 Sheet I of I Address
2. Plant Byron Nuclear Power Station Unit 02 Namne 4450 N. German Church Road, Byron, B. Work Reauest No. 99269538-01 Address . Repair Organization, P 0 No. Job No, etc.
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Nane' Authorization No. Not Applicable 4450 N. German Church Road, Byron, B1. Expiration Date Not Applicable Address
4. Identification of System Boric Acid (AB)
5. (a) Applicable Construction Code Section mI 19 74 Edition, S/75 Addenda, None Code Case (b) Applicable Edition of Section XI Utilized for Repairs or-Replacement Components 19 89/NA
6. Identification of Components Repaired or Replaced and Replacement Components National Repaired, ASME Name of Name of Manufacturer board Other Year Replaced, Code. Stamped Component Manufacturer Serial No No Identification Built or Replacement (Yes or No)

Suction Flange Texas Bolt Co. Heat Number N/A Spool Piece AB-l 1-1, 1984 REPLACED NO Studs G084 2AB03P Suction Flange Nova Machine Heat Number N/A Cat. 1D# 25042, 2000 REPLACEMENT NO Studs Products 99694 2AB03P Suction Flange Texas Bolt Co. Heat Number NIA Spool Piece AB-1 1-1, 1984 REPLACED NO Nuts G095 2AB03P Suction Flange Nova Machine Heat Number N/A Cat ID# 37029, 2000 REPLACEMENT NO Nuts Products 8077124 2AB03P

7. Description of Work: REPLACE SUCTION FLANGE STUDS AND NUTS
8. Test Conducted: Hydrostatic [] Pneumatic [] Nominal Operating Pressure E]

Other E] Pressure psi Test Temp. OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated

_ I FORM NIS-2 (Back)

9. Remarks to be attached Applicable Moaufacturer's Data Reports CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this R6R,4CfW conforms to the rules of the ASME Code, Section XI. ,a 0 Vl..

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed _s, &' Date to , ,2 0Q_ CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by H.S.B.I. Co of Hartford, CL have inspected the co ponents described in this Owner's Report during the period B/to ',, , and state that to the best of my knowledge and belief, the bli'er has performed examinations and takenKbrrctive measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. __________________________Commissions /Z/-/2 4 

                               ,,ýV   -   --  -lnpmoff~g~                                                       NumlBoad. Star,Peoaýa .ad hod  - %rart

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by theProvisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 9/13/02 I Name 4300 Winfield Rd. Warrenville, 1I. 60555 Sheet I of I Address
2. Plant Byron Nuclear Power Station Unit 00 Name 4450 N. German Church Road, Byron, 1I. Work Order No. 00446402-01 Address Repate P.O. No
  • Job No
  • etc.

Oegarnzallon. P.O. Repair Organization, No, Job No, etc.

3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, II. Expiration Date Not Applicable Address
4. Identification of System [ABI BORIC ACID
5. (a) Applicable Construction Code Section I11 19 71 Edition,W/72 AddendaN/A Code Case (b) Applicable Edition of Section Xl Utilized for Repairs or Replacement Components 19 89 Replacement Components
6. Identification of Components Repaired or Replaced and National Repaired, ASME Name of Name of Manufacturer Board Other year Replaced, Code-, Stamped Component Manufacturer Serial No No Identification Butl or Replacement (Yes or No)

PUMP ALLOY STEEL S/N:19853-91 N/A OABOIPB 1975 REPLACED YES CASING CASTING I CASING KEYSTONE N/A N/A OABO1PB 1975. REPLACED NO BOLTING NUT & BOLT TUBE FITTING METAL GOODS N/A N/A OABOIPB 1975 REPLACED NO ELBOW _ CIRCULATION WALL TUBE N/A N/A OABOIPB 1975 REPLACED NO 1* LINE & METAL DRAIN PIPE SANDVIK N/A N/A OABOIPB 1975 REPLACED NO PUMP CRANE CHEM S/N: 0040714-I N/A OABOIPB 2000 REPLACEMENT YES CASING PUMP HT: B-7271-01 Casing HT Code: GEOO PUMP CASING NOVA MACHINE HT: 67741 N/A OABOIPB 2000 REPLACMENT NO BOLTING 3" (9) PRODUCTS PUMP CASING NOVA MACHINE HT: 84413 N/A OABOIPB 2000 REPLACMENT NO BOLTING 5" (3) PRODUCTS PUMP CASING NOVA MACHINE HT: 8970515 N/A 0ABOIPB 2000 REPLACMENT NO NUTS (12) PRODUCTS TUBE FITTING CRANE CHEM HT CODE: 001523 N/A OABOIPB 2000 REPLACMENT NO ELBOW PUMP CIRCULATION CRANE CHEM HT: E37645 N/A OABO1PB 2000 REPLACEMENT NO TUBE PUMP CODE: FTD7 PP ASSY LESS CRANE CHEM 21927-IOA N/A OABO1PB 1977 REPLACED YES CASING PUMP PP ASSY LESS CRANE CHEM 19853-123 N/A 0AB0IPB 1975 REPLACEMENT YES CASING PUMP 1

7. Description of Work REPLACE PP ASSY., CASING, DRAIN LINE, BOLTING AND RECIRC LINE & FITTINGS
8. Test Conducted: Hydrostatic [] Pneumatic [] Nominal Operating Pressure Z Other [] Pressure 145 psi Test Temp. Ambient OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. 

           "1his form has been electronically generated.

FORM NIS-2 (Back)

9. Remarks WO 00446402-01 Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT conforms to the rules of the ASME Code, Section XI. rp.ar reace,.rent Type Code Symbol Stamp NOT APPLICABLE Certificate of Authorization No. NOT APPLICABLE Expiration Date NOT APPLICABLE Signed Date Jo0 ," -,209-ý.

CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of ILLINOIS and employed by H.S.B. CT. of Hartford, CT. have inspected the components described in this Owner's Report during the period 7 ,to 44001Z ,and state that to the best of my knowledge and belief, the Ovner/has performed examinations and taktn e6rrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with t h i________ s in sp ect io n . .____, _________ C o"i si n Commissions______________________ tenscto. & Nafiua board.51we F ,Onuar0 bdncucuua Date ,20 ~i

ER-AA-330-009 Revision 0 Page 29 of 36 ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section XI Page 1 of 4 1 Owner EXELON NUCLEAR Date 09/26/02 Name 4300 WINFIELD RD. WARRENVILLE, IL. 60555 Sheet 1 of 1 Address

2. Plant PYRON NUCLEAR POWER STATION Unit 02 Name 4450 GERMAN CHURCH RD.., BYRON, IL. 00412257-15 Address Repair Organization P.O., Job No., etc
3. Work Performed BYRON MECHANICAL MAINTENANCE Type Code Symbol Stamp N/A Authorization No. N/A 4450 GERMAN CHURCH RD., BYRON, IL. Expiration Date N/A Address
4. Identification of System (CV) CHEMICAL AND VOLUME CONTROL 5 (a) Applicable Construction Code SECTION I1I 1971 Edition, W72 Addenda, NONE Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacements 1989 (c) Section X1 code Cases used, NONE
6. Identification of Components Repaired or Replaced and Replacement Components ASME Nameof Repaired, Code Name of Manufacturer Manufacturer National Other Year Replaced, or -Stamped Component Serial No. Board No. Identification Built Replacement (Yes or
                                                               49                                _3No)

CHECK KEROTEST MA7-13 2CV8442 1976 REPAIRED YES _____ CORP. 536__ _____ ___ 4 4 4 4- t -t 4 4 4 4- 4 + 4

7. Description of Work Seal weld valve cap to bonnet
8. Tests Conducted: Hydrostatic 0l Pneumatic El Nominal Operating Pressure El A11/A* Other E] Pressure - psi Test Temp. OF NOTE: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 A in. x 11 in., (2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

ER-AA-330-009 Revision 0 Page 30 of 36 ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section XI Page 2 of 4

9. Remarks work order 412257-15 Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and repair conform to the repair or replacement rules of the ASME Code, Section XI.

Type Code Symbol Stamp 1,14 Certificate of Authorization No. ///X "Signed a -"tAk Date /0/3, 20 O.? e Owner's Designee, Title CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State of Province of ILL and employed by -A,5566' / of t4/J*4/ C0 have inspected the components described in this Owner's Report during the period 4/arto ,/I ,and state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. 

      !_____Z        __;-4_____-.. _                    Commissions       //I-/ZS"'

4; Inspector's Signature National Board, State, Province, and Endorsements Date 9.._32 0 1&17

ER-AA-330-009 Revision 0 Page 30 of 36 ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section XI Page 1 of 4

1. Owner Exelon Nuclear Date 09/28/02 Name 4300 Winfield Rd. Warrenville, IL 60555 Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Chruch Rd. Byron, IL 61010 W/O 00412257-16 Address Repair Organization P.O., Job No., etc
3. Work Performed By Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable 4450N. German Chruch Rd. Byron, IL 61010 Authorization No. Not Applicable Address Expiration Date Not Applicable
4. Identification of System [CV] CHEMICAL and VOLUME CONTROL
5. (a) Applicable Construction Code Section III 19 74 - Edition, sr..Addenda, N/A Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacements 19 89 (c) Section XI code Cases used, N-416-1
6. Identification of Components Repaired or Replaced and Replacement Components ASME Name of Name of Manufacturer National Other Year Repaired, Code Component Manufacturer Serial No. Board Identification Built Replaced, or Stamped No. Replacement (Yes or No)

COUPLING CONSOLIDATED UTC#2052803/HT COUPLING POWER SUPPLY CODE JBF N/A CAT 1D# 26540 1997 REPLACMENT NO Pipe Weld # Hunter Corp. N/A N/A LINE# 2CV81A 6613 2-CV-2-N5 1985 REPLACED NO Pipe Weld Exelon N/A N/A 2CV81A 2002 REPLACEMENT NO 

   #6613 REMOVE PIPE SPOOLTO SUPPORT VLV INSP. ADD PIPE
7. Description of Work COUPLING AND REWELD PIPENLV SPOOL ASSY.
8. Test Conducted: Hydrostatic E] Pneumatic El Nominal Operating Pressure Other E[ Pressure 61 psi Test Temp. 77 OF NOTE: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 in. x 11 in., (2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

ER-AA-330-009 Revision 0 Page 30 of 36 ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section XI Page 2 of 4 Work Order 412257-16, used ASME Section XI Code Case N-416-1. Pipe Weld

9. Remarks
                         # 6613 cut out and replaced per the referenced Work Order.

Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this Replacement conform to the repair or replacement rules of the ASME Code, Section XI. Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Signed .&; i "*lJ v . L A,,A*D.2 a. w Date /o3 20 op..- (: e or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State of Province of Illinois and employed by H.S.B. CT. of Hartford, CT. Have inspected the components described in this Owner's Report during the period To- ,ato , and state that to the best of my knowledge and belief, th6 Owner has perfdorrted examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. _a_**__ Commissions ,_,__-/Zs' _ _ SInspector's Signature National Board, State, Province. and Endorsements Date 6&7t., 30 ,20o 1

I FORM N]S-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 10/07/02 Name 4300 Winfield Rd. Warrenville, I1. 60555 Sheet 1 of I Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road. Byron. II. Work Reouest No. 99272618-01 Address S-Repair Organization, P.O. No., Job No. etc
3. WorkdPerformed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, 11. Expiration Date Not Applicable Address
4. Identification of System CHEMICAL FEED AND VOLUME CONTROL (CV)
5. (a) Applicable Construction Code Section II1 19 71 Edition, S72 AddendaNONE Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and Replacement Components National Repaired, ASME Name of Name of Manufacturer board Other Year Replaced, Code, Stamped Co:;onet Manufacturer Serial No No Identification Built or Replacement (Yes or No) 2" X 3" RELIEF VALVE CROSBY N56903-00-09 N/A EPN: 2CV8117 1975 REPLACED YES 2" X 3" RELIEF VALVE CROSBY N56903-00-0035 N/A EPN: 2CV8117 1999 REPLACEMENT YES
7. Description of Work Replace Relief Valve per Preventative Maintenance Program - 2CV8117
8. Test Conducted: Hydrostatic Dl Pneumatic El Nominal Operating Pressure Z I Other E] Pressure 3 5L psi Test Temp. Z-J- OF I Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back)

9. Remarks WO 99272618-01 Applicable Manufacturet's Data Reports to beattached I

CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT conforms to the rules of the ASME Code, Section XI. ,,.* Type Code Symbol Stamp NOT APPLICABLE Certificate of Authorization No. NOT APPLICABLE Expiration Date NOT APPLICABLE Signed '9.Q- Date 10/2.-. ,20 02. CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of ILLINOIS and employed by H.S.B. CT of Hartford, CT. have inspected the components descn bed in this Owner's Report during the period S1'7,17Z. to /0_____ ,____,__. _ , and state that to the best of my knowledge and belief, the Owvier'has performed examinations and tako~i corlective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. ___________________ ____----_____Commissions Dateatal podtrement Boart ae Pro2t0ce,ad Date t t? 1 ,t,Lo ,20

ER-AA-330-009 Revision 0 Page 30 of 36 As Required by the Provisions of the ASME Code Section XI I Page I of 4 1

1. Owner Exelon Nuclear Date //- /3 -O0.L Name 4300 Winfield Rd. Warrenville, IL 60555 Address Sheet j of I
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Chruch Rd. Byron, IL 61010 "-EXELON Address Repair Organization P.O., Job No., etc
3. Work Performed By Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable 4450 N. German Chruch Rd. Byron, IL 61010 Authorization No. Not Applicable Address Expiration Date Not Applicable
4. Identification of System [CV] CHEMICAL VOLUME
5. (a) Applicable Construction Code Section III 19 71 Edition, W2 Addenda, NA Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacements 19 89 (c) Section XI code Cases used, N/A ...
6. Identification of Components Repaired or Replaced and Replacement Components I ASME Name of Name of Manufacturer National Other -Year Repaired, Code Component Manufacturer Serial No. Board No. Identification Built Replaced, or Stamped Replacement (Yes or~

No. 'No) DISCHARGE PACIFIC DISCH HD SIN: N/A ETN:2CV01PB 1176 REPAIR YES HEAD PUMP 68823-Dl-AB PP S/N: 49773 ____ I _____ [ _____ I___ I _____ I__ I _____ I___

7. Description of Work REPAIR DAMAGED O-RING SURFACE ON DISCHARGE HEAD
8. Test Conducted: Hydrostatic nl Pneumatic El Nominal Operating Pressure Other - El Pressure -,2G? psi Test Temp. 96 OF NOTE: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

ATTACHMENT 4

ER-AA-330-009 Revision 0 Page 30 of 36 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section X1 Page 2 of 4

9. Remarks CogRK<*ogOrEA J"69079-07.

Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this /g£PA1A conform to the repair or replacemen rules of the ASME Code, Section XI. Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Signed Date /I-,;o ,20 0.- 

                                   <ýr        Owner's Designee. Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State of Province of Illinois                       and employed by H.S.B. CT.

of Hartford, CT. Have inspected the components described in this Owner's Report during the period to 4/jd , and state that to the best of my knowledge and belief, the-O\ner has perfdrrrned examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. Inspector's Signature ___ ___ Commissions ,-zs9 National Board, State, Province. and Endorsements Date Z .e, Z4 , 20 4'Z

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date _ ___ I/ /__I Name 4300 Winfield Rd. Warrenville, 11. 60555 Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, 11. Work Request No. 99271688-03 Address Repair Organizatid. P.O No* JobNo. etc.
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System DG - EMERGENCY DIESEL GENERATOR
5. (a) Applicable Construction Code Section I1 19 74 Edition, S/75 Addenda,N/A Code Case (b) Applicable Edition of Section XI Utilized for Relpairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and Replacement Components Natonal Repaird. ASME Name of Name of Manuacturer board ot er Year Replaced, Code. Stamped C t Ma *fte Semi No No IdentificatlOn Built or Replacement (Yes or No)

JACKET WATER AMERICAN EPN'2DGOIKB-X2 COOLER STANDARD 9-20003-07-6 33538 LOWER COOLER 1979 REPAIRED YES

7. Description of Work( )CH CW-REPAIR FLANGE FACE OF LOWER CHANNEL HEAD.
8. Test Conducted: Hydrostatic E] Pneumatic El Nominal Operating Pressure Other 0] Pressure 017 psi Test Temp. (e, "7 oF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.,

(2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated.

FORM NIS-2 (Back) Jpr4

9. Remarks'C-ODEC-. 1N-416-
                                                        "ApplicableManufactuwe  s Data Keports to be attached                  -    -   '    ., J CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPAIR                               conforms to the rules of the ASME Code, Section XI.                                                                                  r...,,.--t Type Code Symbol Stamp                  NOT APPLICABLE Certificate of Authorization No. NOT APPLICABLE                                                   Expiration Date NOT APPLICABLE Signed         L5         5,                1) e
                                               /S/      t"-                                                     Date /J;,3            ,2001 CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors -andthe State or Province of ILLINOIS                                                              and employed by H.S.B. L&L Co.

of Hartford, CT. have inspectede components descntbel imtins Owner's Report during the period /to , and state that to the best of my knowledge and belief, the Oner-4as performed examinations and tak o6rfective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. _____,___________,____..... .___ Commissions _ _ _ _ _ __ _ _ _ _ Date,20 p,0

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date ]

Name 4300 Winfield Rd. Warrenville, U. 60555 Sheet 1 of 1 Address

2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, IL Work Request No. 99271684-03 Address Repair Organization, P.O No, lob No, etc.
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road,Byron, IL Expiration Date Not Applicable Address
4. Identification of System DG - EMERGENCY DIESEL GENERATOR
5. (a) Applicable Construction Code Section 111 19 74 Edition, St75 AddendaN/A Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and Replacement Components National Repared, ASME Nam of Name of Mantufactur board Other Year Replace Code;, Stmped Conlxast Manufacturer Seial No No Identfication Built or Replacement (Yes or No)

JACKET WATER AMERICAN EPN.2DG01KB-XI COOLER STANDARD 9-20003-06-6 33534 UPPER COOLER 1979 REPAIRED YES

7. Description of Work
  • P-PA1R FLANGE FACE OF CHANNEL HEAD.
8. Test Conducted: Hydrostatic El Pneumatic EJ Nominal Operating Pressure Aj Other [E Pressure 97 psi Test Temp. &7.7 OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated.

FORM NIS-2 (Back)

9. Remarks CGDECASE. N-H46-1 .*.s 1"243/I*

Appflcawe Manulactuwer s Udta Reports to be attached WO 1 L7I IV3 

                                                                                                                  *
  • W CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPAIR conforms to the rules of the ASME Code, Section XM. . rq,*,

Type Code Symbol Stamp NOT APPLICABLE Certificate of Authorization No. NOT APPLICABLE Expiration Date NOT APPLICABLE Signed - Date /*2 ,20c7 CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of ILLINOIS and employed by H.S.B. L&L Co. of Hartford, CT. have inspected the components descnbed mnthis Owner's Report during the period , to ,and state that to the best of my knowledge and belief, theOwn6r has performed examinations and take cective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. 

       ,nspecil          _ sCommissions                                                               ZZZ_ Z    0A Date          ,20

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI I. Owner Exelon Nuclear Date 01/28/02 Name 4300 Wiinfield Rd, Warrenville, IL 60555 Sheet I of I Address

2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, II. Work Order 99021051-07 Address Repair Organization, P 0 No, Job No, etc
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road. Byron. II. Expiration Date Not Applicable Address
4. Identification of System Diesel Generator (DG)
5. (a) Applicable Construction Code Section IH1 19 74 Edition, S75 Addenda, NIA Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and Replacement Components National Repaired, ASME Narn of Name of Manufacturer board Other Year Replaced. Code, Stamped c* I .

JW HX Floating Inar n "e Standard American m0M 9-20003-06-5 33533 Equip# 2DGOIKA-X1 1979 Repairr eplaced.ft Yes% sorro Channel Head Upper Cooler

7. Description of Work: Repair of Floating Channel Head
8. Test Conducted: Hydrostatic El Pneumatic F] Nominal Operating Pressure [

Other El Pressure 7.6 psi Test Temp. 73 OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x II in., (2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back) Remarks 1anufacturec's DtReortsothd Applicable Manufacturer's DataRpts toe 4attahe CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this repair conforms to the rules of the ASME Code, Section XI. ntp21r t rep.la...t Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed 4SDate ",2OQV. CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and State or Province of Illinois and employed by HSB CT of Hartford, Ct. have inspected the components described in this Owner's Report during the period .j -c,5 - to 0'5 -t1.- -C-0. -L , and state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XL. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any perso nj or property damage or a loss of any kind arising from or connected with this inspection. 1 _'" 5 C _______________________ Commissions *t-*S) ,Aii m-t%3* S teInspecr,- m r andEndorsements Nationl Board-State Pnnmnci., Date 0 cj'- c) ,20 Q2.

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section X1

1. Owner Exelon Nuclear Date 01/29/02 Name 4300 Winfield Rd, Warrenville, IL 60555 Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 02 Nare 4450 N. German Church Road, Byron, II. WVork Order No. 99021051-08 Address - Repair Organization, P.O. No, Job No, etc
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable SName Authorization No. Not Applicable 4450 N. German Church Road, Byron, II. Expiration Date Not Applicable Address
4. Identification of System Diesel Generator (DG)
5. (a) Applicable Construction Code Section 1I1 19 74 Edition, S/75 Addenda, N/A Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and Replacement Components National Repaired, ASME Name of Manufacturer board Other Year Replaced, Code; Stamped Name of Serial No No Identlificalion Built or Replacer-ent (Yes or No)

Co=ponent Manufacturer JW HX Floating American Standard 9-20003-07-5 33537 Equip# 2DGOIKA-X2 1979 Repair Yes Channel Head Lower Cooler

7. Description of Work: Repair of Floating Channel Head
8. Test Conducted: Hydrostatic El Pneumatic El Nominal Operating Pressure [

Other 0 Pressure 7.6 psi Test Temp. 73 OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been eleclronically generated

FORM NIS-2 (Back) Remarks Repaired per Work Order 99021051-08 Applicable Manutacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this repair conforms to the rules of the ASME Code, Section XI. re ctm,, . Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed 5 Date ', ,20 Ox.. cOtd Designce. QO.e Title CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, Ct. have inspected the components described in this Owner's Report during the period 0( c~} to C) - I I -*0- , and state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for aies injury jal or property damage or a loss of any kind arising from or connected with this inspection 4ý ~~Commissions &/~S Ax- 4:tý)3 

                                                                                                                               .. d Endorn-ns NarIoa 8oa1d.SwaeNoninc
                     , spmcr gn Date               It          20 (52,

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section X1

1. Owner Exelon Nuclear Date 6/2/02 Name PO Box 805379, Chicago, 11. 60680-5379 Sheet I of I Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, I1. Work Request No. 443802-01 Repair Organization, P.O No., Job Address No., etc.
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, 11. Expiration Date Not Applicable Address
4. Identification of System FIRE PROTECTION
5. (a) Applicable Construction Code Section 111 19 74 Edition, S75 AddendaNONE Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and Replacement Components National Repaired. ASME Name of Manufacturer board Other Year Replaced. Code, Stamped Name of Componen Mnuifacturer SerialNo No Idenrtification Built or Replacement (Yet or No)

PIPE S.W. FAB FP-18-7 OFP C2BA 1977 HT# L03689 NIA REPLACED NO PIPE CONSOLIDATED HT #X82751 N/A OFPC2BA 2002 REPLACEMENT NO POWER ________ 1 ________ 1 ________ .1_________ 1 1 1 I ______________________ I ______________________ i _______________________ L_________________________ J_____________________________ a

7. Description of Work REPLACE PIPING
8. Test Conducted: Hydrostatic E] Pneumatic E) Nominal Operating Pressure ED Other El Pressure 158 psi Test Temp. 73.5 OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 in. x II in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back)

9. Remarks (20,6~ C- ea
  • NJ- /6-1 qtlg) I<'/) -I (J < otqoc6'1 Applc[able Manufacturer S Data ReponS to bc attached 44'C0 2..OI CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this/*flLA MdJ conforms to the rules of the ASME Code, Section XI. ,*, ... s, Type Code Symbol Stamp NOT APPLICABLE Certificate of Authorization No. NOT APPLICABLE Expiration Date NOT APPLICABLE Signed QaAA &'* & Date /0 OF ,20__

2 CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of ILLINOIS and employed by H.S.B. CT of Hartford, CT. have inspected the components described in this Owner's Report during the period */7 to ,and state that to the best of my knowledge and belief, the Orwner has performe eamimations and ta en corrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. ___ *____________________Commissions _____________ Nalional board StalePto*0mna. 

                                                                                                                                 .a EDde   tZ                -,20 Date      t*     8      ,20       O

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 10/7/02 Name 4300 Winfield Rd. Warrenville, II. 60555 Sheet I- - of I Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road. Bvron. 11. Work Order No. 99278816-01 Address Repair Organization, P.O. No., Job No, etc
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, II. Expiration Date Not Applicable Address
4. Identification of System [FW] FEEDWATER I
5. (a) Applicable Construction Code Section I11 19 74 Edition, W/75 Addenda, N/A Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and Replacement Components National Repaired, ASME Name of Name of Manufacturer board. Other Year Replaced. Code. Stamped Component Manufacturer Serial No No Identification Built or Replacement (Yesor No)

PLUG MASONEALAN EQUIP #: 2FW035A REPLACED NO S/N, 696155-14 N/A VLV S/N: N-00189 1980 

                                                                                                                         +F05         RELAED               +

1 PLUGPIOTMSOE MASONEILAN _ +A - QI4 ID # 22498 CAT REPLACEMENT NO 516853-7 N/A EQUIP # :2FW035A 1997 PILOT MASONEALAN- EQUIP #:2FW035A REPLACED NO _________ SIN; 78266-11 N/A _ ________ 1980 PILOT MASANEALAN CAT ID # 25343 REPLACEMENT NO __________342690-3 N/A EQUIP #: 2FW035A 1996 _____

7. Description of Work REPLACE PLUG /PILOT ASSEMBLY
8. Test Conducted: Hydrostatic [] Pneumatic E] Nominal Operating Pressure El d1/ Other E] Pressure psi Test Temp. OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x I I in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back) Remarks plug and pilot replaced per work order 99278816-01. Applicabie Manutacturrr*s Data Reporns to bc attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this &,P/.Ae J19,conforms to the rules of the ASME Code, Section XI. , epb,m,,t Type Code Symbol Stamp NOT APPLICABLE Certificate of Authorization No. NOT APPLICABLE Expiration Date NOT APPLICABLE Signed Date Ja - :2 20 CERTIFICATE OF INSERVICE INSPECTION , I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of ILLINOIS and employed by I.&I. 

                                                                                                                                   !.S.B. C.,. -,8 CT of Hartford, CT.                                                          have inspected ge components descnbed in this Owner's Report during the period __              _,,__                       _           to                             Z________ , and state that to the best of my knowledge and belief, the'Ov('ner has performed examinations and taken cgfrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this _______ inspection. ______ ______ Commissions __________ _________ 6oý -I M"w w 's do ward. Sta"c PRovinc. a Endxno r uts Date 462*' 7 , 20 a9,

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 6115/01 Name 4300 Winfield Rd, Warrenville, IL 60555 Sheet I of I Address
2. Plant Byron Nuclear Power Station Unit 02 Name W~ork fleone~t No. 990195*133-01 4450 N. German Church Road, Byron, I. I [I a Work Renuest No 990195133-01 SAddress Repair Organization, P.O No, .Job No, etc.
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, 11. Expiration Date Not Applicable Address
4. Identification of System Main Steam (MS)
5. (a) Applicable Construction Code Section I11 1974 Edition, S74 Addenda, none Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and Replacement Components National Repatred, ASME Name of Narmeof Manufacturer board Other Year Replaced. Code; Stamnped Component Manufacturer Serial No No Idtmlification Bui or Replacement (Yes or No)

Valve Plug Anchor Darling 4 N/A 2MS018C 1994 Replaced yes Valve Pll* Flowserve I N/A Cat ID 0000029378 1999 Replacement yes

7. Description of Work: rebuild valve to stop leak by.
8. Test Conducted: Hydrostatic 11 Pneumatic El Nominal Operating Pressure El Other E] Pressure psi Test Temp.

Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in., (2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back)

9. Remarks Work Order 990195133-01 Applscable Marnufacturer s DataReportsto beattached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this replacement conforms to the rules of the ASME Code, Section XI. "P*,.,,

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed _ (LIVA- La-im 

                             -       0  a Desznn.pTiale Date   /0- IS-         ,20O; CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois                                                           and employed by HSB CT of Hartford, Ct.                                                          have inspectedbhe omponents described in this Owner's Report during the period              9/,/,1'                                    to              ,,*/4         .             , and state that to the best of my knowledge and belief, the O(vder has performed examinations and taken cofrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. __ins_____-______Commissions , L e - ,o.ae aoe Date 15 20 o,,r

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 09/23/02 Name 4300 Winfield Road, Warrenville, II. Sheet I -- of 1 Address
2. Plant Byron Nuclear Power Station Unit 01.

Name 4450 N. German Church Road, Byron, II. Work Request No. 99126072-01 Address Repair Organization, P.O. No, Job No, etc.

3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 555 S. Joliet Rd, Bolingbrook, IL. 60440 Expiration Date Not Applicable Address
4. Identification of System Main Steam - MS
5. (a) Applicable Construction Code Section I11 19 74 Edition, S/75 Addenda, NONE Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89 N.o Addenda
6. Identification of Components Repaired or Replaced and Replacement Components National Repaired. ASME Name of Name of Manufacturer board Other Year Replaced. Code; Stamped Component Manufacturer Serial No No Identification Built or Replacement (Yes or No) 3" Globe Valve Velan 1772 N/A 2MS020D 1978 Replaced Yes 3" Globe Valve Velan 012047-4 N/A 2MS020D 2001 Replacement Yes 3" Globe Valve Velan 1775 N/A 2MS021D 1978 Replaced Yes 3" Globe Valve Velan 012047-8 N/A 2MS021D 2001 Replacement Yes HT#L64207 I 3" Pipe Hunter Corp N76920 N/A 2MS20AD 1985 Replaced No Consolidated 3" Pipe Power Supply HT# Y67155 N/A 2MS20AD 1999 Replacement No
7. Description of Work Replace Valves & Piping
8. Test Conducted: Hydrostatic [D Pneumatic EJ Nominal Operating Pressure [

Other E] Pressure 1079 psi Test Temp. 557 OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in., (2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back)

9. Remarks CODE CASE N416-1 WO 99126072-01 p cab 's at& Reporsl 1obe attached 6d'iPpr CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT conforms to the rules of the ASME Code, Section XI. nafwrpefl Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed \  !ýd
                                %wne, RiýR                                                         Date     I[o--            20   ;i.

Y -gtna., CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by H.S.B. CT. of Hartford, CT have inspected the components described in this Owner's Report during the period _ _ _ _ _ _ to /10 / , and state that to the best of my knowledge and belief, the O6inea-s performed examinations and taken o6rrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. __ __ __ _ __ __ __ _Co mmi ssions /e*-/t.S9 c9 C.t - ISer I amatr H.,d.Ave ft ., d Date X01 0 0p

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 09/23/02 Name 4300 Winfield Road, Warrenville, 11. Sheet I of I Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, II. Work Reouest No. 99129022-01 Address Repair Organization. P.O. No, Job No, etc
3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 555 S. Joliet Rd, Bolingbrook, IL. 60440 Expiration Date Not Applicable Address
4. Identification of System Main Steam - MS
5. (a) Applicable Construction Code Section 11] 19 74 Edition, S/75 Addenda, NONE Code Case (b) Applicable Edition of Section XI Utilized for Repairs or ReplacemenComponents 19 89 No Addenda
6. Identification of Components Repaired or Replaced and Replacement Components National Repaired, ASME Namnof Name of Manufacturer board Other Year Replaced, Code, Starnped Comn
      =   n:             Manufacturer               Serial No               No                 Idertification             Bu5lt         orReplbce..me    (Yes or No) 3" Globe Valve       Velan                     1773                  N/A                  2MS020C                        1978       Replaced            Yes 3"GIobe Valve        Velan                    012047-3               N/A                  2MS020C                        2001       Replacement         Yes 3" Globe Valve       Velan                     1770                  N/A                   2MS021C                       1978       Replaced            Yes 3" Globe Valve       Velan                     012047-7              N/A                   2MS021C                       2001       Replacement         Yes HT#L64207 3" Pipe              Hunter Corp              N76920                 N/A                   2MS20AC                        1985       Replaced           No COnsolidated 3" Pipe              Power Supply             HT# Y67155             N/A                   2MS20AC                        1999       Replacement        No
7. Description of Work Replace Valves & Piping
8. Test Conducted: Hydrostatic D] Pneumatic Nominal Operating Pressure Z Other [] Pressure II080 psi Test Temp. 557 OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back) Remarks CODE CASE N416-1 WO 99129022-01 Applicabik Manufacturer s DataReportsto be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this Replacement conforms to the rules of the ASME Code, Section XI. t .... taoenm,, Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed a Date 1,O/'7 ,200Z CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by H.S.B. 4&4-ei cr of Hartford, CT have inspected the components descnbed in this Owner's Report during the period A to __/___._ ,and state that to the best of my knowledge and belief, the Ownef has performed examinations and lak/en corrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XL. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected \with this inspection. ____Commissions ezro rt c4zat DateVoff l ,20sleto- 1."mW -a. Nam no-. .04 Date & /." ,120 O

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI I. Owner Exelon Nuclear Date 09/25102 Name 4300 Winfield Road, Warrenville, I!. 

                                                                                      "Sheet 1               of      I Address Unit 01
2. Plant Byron Nuclear Power Station Name Work Request No. 99080609-01 4450 N. German Church Road, Byron, II.

Address Repair Organization, P.O. No, Job No. etc. Type Code Symbol Stamp Not Applicable

3. Work Performed by N P S & W VENTURE Name Authorization No. Not Applicable 555 S. Joliet Rd, Bolingbrook, IL. 60440 Expiration Date Not Applicable Address
4. Identification of System Main Steam - MS
5. (a) Applicable Construction Code Section I]1 19 74 Edition, S/75 Addenda, NONE Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89 No Addenda
6. Identification of Components Repaired or Replaced and Replacement Components 1 _ Naomoiat q 1 Repawed., I ASME board Other Year Replaced, Code&, Stapned Narmeof Name of Manufacturer Con*3*ba Manufacturer Serial No No Identificatin 9Bu7 or Replacd ne __esor__

3" Globe Valve Velan 661/1767 N/A 2MS020A , 1978 Replaced Yes V.1I,', N/A 2MS020A 2002 1Replacement Yes Velan 1774 N/A 2MS021A 1978 Replaced Yes 3" Globe Valve 022225-1 N/A 2MS021A 2002 Replacement Yes 3" Globe Valve Velan HT#L64207 Hunter Corp N76920 NIA 2MS20AA 1985 Replaced No 3" Pipe COnsolidated HT# Y67155 N/A 2MS20AA 1999 Replacement No 3" Pipe Power Supply

7. Description of Work Replace Valves & Piping
8. Test Conducted: Hydrostatic E] Pneumatic E] Nominal Operating Pressure Z Other El Pressure 1083 psi Test Temp. 557 OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back) Remarks CODE CASE N416-1 WO 99080609-01 1f 

               ~'75"                  .,,a )&  ,pcbte M        x",Dat Repons factrer'      li to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT                        conforms to the rules of the ASME Code, Section XI.                                                              ,P,,,,t FrC.e..l Type Code Symbol Stamp                                Not Applicable Certificate of Authorization No. Not Applicable                                       Expiration Date Not Applicable Signed           X'                                                                                 Date         /"20                ,_

CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by H.S.B. CT. of I-artford,CT have inspected the components described in this Owner's Report during the period /*l to ,and state that to the best of my knowledge and belief, the 1wrier has performed examinations and taken torecive measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner forbany personal injury or property damage or a loss of any kind arising from or connected with this ___ inspection. ___ ___ ___ __Commissions /Z0d"t/s m"-,( DNaltal 9ort. Nat Pon20, andEndorK 15 Date *7,* , 20 t7 9

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 09/27/2002 Name 4300 Winfield Rd. Warrenville, 11. 60555 Sheet I of I Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, 11. Work Reouest No. 99274784-01 Address Repair Organization, P 0. No, Job No, etc.
3. Work Performed by NWS Technologies Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 131' Venture Blvd, Spartanburg, SC 29306. Expiration Date Not Applicable Address
4. Identification of System MS MAIN STEAM
5. (a) Applicable Construction Code Section III 19 74 Edition, N/A AddendaNO Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and Replacement Components National - Repaired. ASME Name of Name of - 4anufacture, board Other Year Replaced, Code, Stamped component Manufactrer Seral No No Identification Built or Replacemem (Yes or No)

DISC, VALVE DRESSER IND. AAJOI 2MSOI7A VALVE N/A S/N BU01493 1978 REPLACED NO DISC, VALVE DRESSER IND. 2MS017A VALVE ADE61 N/A SIN BU01493 2001 REPLACEMENT NO

7. Description of Work Replace Disc in Valve - 2MS017A S/N:BUOI493
8. Test Conducted: Hydrostatic El Pneumatic El Nominal Operating Pressure Other F] Pressure 1083 psi Test Temp. 557 OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated.

FORM NIS-2 (Back) I Remarks WO#99274784-01 Apphcubic Manutactur S Uata KeportS 1o0D allacint*e CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT conforms to the rules of the ASME Code, Section XI. ,rwa

  • Type Code Symbol Stamp NOT APPLICABLE Certificate of Authorization No. NOT APPLICABLE Expiration Date NOT APPLICABLE Signed . */,Date 4,* C4V ( t /" ,2002 CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of ILLINOIS and employed by H.S.B.CT of Hartford, CT. have inspected the components descnbed in this Owner's Report during the peno 7/6 to and state that to the best of my knowledge and belief, the Owner has performed examinations and taken correctce measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. Commissions /'.Z-asi Date ___ ,20 02

FORM NVR-1 REPORT OF REPAIR a REPLACEMENT I OF NUCLEAR PRESSURE RELIEF DEVICES.,.

1. Work performed by: NWS Technologies, LLC Purchase Order # 00049782 Rev. 2 131 Venture Boulevard. Spartanburg, SC 2930D
2. Work performed for: Exelon Corporation. Byron Nuclear Statibn 3/4. Owner - name, address and identification of nuclear poWer plant Exelon Corporation.

Byron Nuclear Station 4450 N. German Church Road Byron, IL 61010

5. a: Repaired pressure relief device: Main Steam Safety Valve b: Name of manufacturer. Consolidated I Dresser c: Identifying nos.

3707R BU01493 n/a steam 6" 78 (type) (mnfir S/N) (NBa) (service) (size) (yr.buift) d: Construction Code: ASME Section III 1974 n/a n/a 2 (nsmehectiordidvlion) (edition) (addenda) (Code Cases(&)) (Code Class)

6. ASME Code Section Xl applicable for inservice inspection: 1989 rna nra (edition) (addenda) (Code Case~s))
7. ASME Code Section XI used for repairs, replacements: 1989 n/a n/a (edition) (addenda) (Code Case(s))
8. Construction Code used for repairs, replacements: 1974 n/a n/a (edltion)' (addenda) (Code Case(s))
9. Design responsibilities: n/a
10. Opening pressure: 1175 psig Set-pressure adjustment made at: NWS Technologies, LLC using steam
11. Description of work (include name end Tdcntifying number of rcpleocment port-): Disassembled, replaced disc, replaced spindle, inspected, lapped, cleaned, lubricated, reazzembled, failed steam testing. Disazssembled, replaced disc, reassembled, certified oct-prczsure and seat tightncs. on steam.

12, Remarks: New disc s/n ADE61 and new spindle installed. NWS Traveler# 02-196. CERTIFICATE OF COMPLIANCE I, Ccaer V. Sierra certify that to the best of my knowledge and belief the statements made in this report are correct and the repair, modification or replacemtn of the pressure relief devices described above conforms to Section XI of the ASME Code and the National*Board Inspection Code "VR" and "NR" rules. National Board Certificate of Authorization No. 632 to use the "VR" stamp expires April 3, 2003. National *oard Certificate41a of Authorization No. 81 to use the , stan* expires April 9. 2003. il.,, NWS Technologies, LL.C Manager. QA Date Repair Organization A oized rep= ennative Title CERTIFICATE OF S*NPECTIO I. Charles F. Toegel Jr. holding a valid commission Issued by The National Board of Boiler and Pressure Vessel Inspectors and certificate of competency Issued by the jurisdiction of North Carolina and employed by Hartford Steam Boiler of CT of Hartford. CT have inspected the repair. modification or replacement described In this report on T4 Z 0;.and state *thatto the best of my knowledge and belief, this repair, modification or replacement has bebn cdmpleted in accordance with Section XI of the of the ASME code and the National Board Inspection CoGe "VR- and "NR" rules. By signing this certificate, neither the undersigned nor my employer makes any warranty, expressed or implied. concerning this repair, modification or replacement described in this report. Futhermore. neither the undersigned nor my employer shall be liable In any manner for any personal injury, property damage or loss of any kind arising from or connectedwl thi insp ctl _L &l 2, LIZ -n tr nf d NBU 8462. A, N. I NC# 1073 I WWdI ettPr sVSina Ir' Comsin N idedreet) ui~~nen. Received Sep-24-O2 10:06 From- To-BYRON MATERIAL MANAG Paie 04

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 10/04/02 Name 4300 Winfield Road, Warrenville, II. Sheet I of I Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road. Byron. II. Work Request No. 99080611 -01 Address Repair Organization, P.O No,Job No, etc
3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 555 S. Joliet Rd, Bolingbrook, IL. 60440 Expiration Date Not Applicable Address
4. Identification of System Main Steam (MS)
5. (a) Applicable Construction Code Section 11 - 19 74 Edition, S/75 Addenda, NONE Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89 N.o Addenda
6. Identification of Components Repaired or Replaced and Replacement Components National Repaired, ASME Name of Name or Manufacturer board Other Year Replaced, Code, Stamped Componem Manufacturer Serial No No Identification Bult or Replacement (Yes or No) 3" Globe Valve Velan 168 N/A 2MS020B 1978 Replaced Yes 3" Globe Valve Velan 012047-2 N/A 2MS020B 2001 Replacement Yes 3" Globe Valve Velan 1783 N/A 2MS021B 1978 Replaced Yes 3" Globe Valve Velan 012047-6 N/A 2MS021B 2001 Replacement Yes HT#L64207 /

3" Pipe Hunter Corp N76920 N/A 2MS20AB 1985 Replaced Yes COnsolidated 3" Pipe Power Supply HT# Y67155 N/A 2MS20AB 2002 Replacement No _____ I_____ [_____ I______ I ______ I __ _____ I ___

7. Description of Work Replace Valves & Piping
8. Test Conducted: Hydrostatic [] Pneumatic E] Nominal Operating Pressure 0 Other [] Pressure /OJ.t, psi Test Temp. 5* 7 OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back) Remarks CODE CASE N416-1 LjkK oXI q9o OG1l1-o 1 CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this _i?,kFw C"conforms to the rules of the ASME Code, Section XL. rpi.. r ..... Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed Lk4 WI *..Date /0 " I ,20O ,, CERTIFICATE OF INSERVICE INSPECTION 9, ,/9,dA I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by H49 B ;&] Cc. i6;6cr of Hartford, CT have inspected the components described in this Owner s R-eport during the period Z00-ela-0 to ,,/v-., , and state that to the best of my knowledge and belief, the Ownerlias performed examinations and tak rrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind ansing from or connected with this inspection. a Q/2.... 4rt..., Commissions N 2pY..... Lnd...... SPa 

                           ,20 DatIspors Date                           20~

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 09-22-02 Name 4300 Winfield Road, Warrenville, II. Sheet I of I Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron. II. Work Request No. 00340993 - 01 Address Repair Organmation, P.O No., Job No, etc
3. Work Performed by N P S & W VENTURE T 'pe Code Symbol Stamp Not Applicable Name At uthorization No. Not Applicable 555 S. Joliet Rd, Bolingbrook, IL. 60440 Expiration Date Not Applicable Address
4. Identification of System REACTOR COOOLANT ( RC)
5. (a) Applicable Construction Code Section 111 1971 Edition, S72 Addenda, (*) Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89 N.o Addenda
6. Identification of Components Repaired or Replaced and Replacement Components National Repared, ASME Name of Narmeof Manufacturer board Other Year Replaced, Code-, Stamped Component Manufacturer SermlNo No Identification Built or Replacement (Yes or No)

Heavy Hex Screw Ene Bolt Corp. T08713 n/a 2RCOIBB Bolt #8 1980 Replaced No 1 7/8"- 8 HT: 8068517 MJ-165B Heavy Hex Screw Trace: R8421 n/a 2RCOIBB 1989 Replacement No 17/8"- 8 HT: 7-1014 MJ-165B

7. Description of Work Replace Hot Leg Primary Manway Bolt # 8 - MJ-1 65B
8. Test Conducted: Hydrostatic [] Pneumatic [] Nominal Operating Pressure Other E3 Pressure ,..2.37 psi Test Temp. "Sie OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x II in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been elecimnically generated.

FORM NIS-2 (Back) O . Remarks (*) W74 for NB-2331 (D), NB-2332(A)(2), NB-4332, NB-4334, .1, .2, NB-4335, .1, .2, .3 Applicable Manutacturer's Data Repons to be attached 1335, 1493-1, 1528, NB-4643 CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this %,*.ncto' conforms to the rules of the ASME Code, Section XI. rLt rlne Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed - '... Date I0/r ,2002 CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors anal the State or Province of Illinois and employed by HSB CT of Hartf rd, QT have rnspected th components described in this Owner's Report during the period to ___________,and state that to the best of my knowledge and belief, the Owne has performed examinations and tak~n orrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection 

                               . ~Commissions In*,eot                                                                                      -p'4r Inspew 3 Slf, iature                                                                 4LZrdN4SAK4o.0 d.n' Date :*                            20 0,7

ER-AA-330-009 Revision 0 Page 32 of 36 ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section Xl Page 1 of 4

1. Owner Exelon Nuclear Date 9-23-02 Name 4300 Winfield Road, Warrenville. II. Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 02 Name Church Road, Byron WORK ORDER 00391293 4450 N. German Address Repair Organization P.O., Job No., etc Type Code Symbol Stamp Not Applicable
3. Work Performed by N P S & W VENTURE Authorization No. Not Applicable 555 S. Joliet Rd, Bolingbrook, IL. 60440 Expiration Date Not Applicable Address
                                                                              'STEM
4. Identification of System REACTOR COOLANT S) 5 (a) Applicable Construction Code ASME SECTION III1974 Edition, S74 Addenda, 1644 Rev. 7. 1682, 1683, 1685, 1686, 1651, 1728, 1729, 1734, N-180, N-108 Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacements 1989 (c) Section XI code Cases used, NONE
6. Identification of Components Repaired or Replaced and Replacement Components in. r r r r ASME ASME Code Repaired, Name of National Replaced, or ,Stamped Name of Manufacturer Board Other Year (Yes or Manufacturer Identification Built Replacement Component Serial No. No. No)

PACIFIC- 9595 N/A 2RC16002S 1980 Replaced YES SNUBBER, PSA-1/2 SCIENTIFIC PACIFIC- 13080 N/A 2RC16002S 1981 Replacement YES SNUBBER, PSA-1/2 SCIENTIFIC

7. Description of Work REPLACED SNUBBER
8. Tests Conducted: Hydrostatic E] Pneumatic [D Nominal Operating Pressure [

VT- Other P Pressure _ psi Test Temp..- OF 1 NOTE: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 in. x 11 in., (2) and the number of information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered sheets is recorded at the top of this form.

ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section XI Page 2 of 4 O 9. Remarks Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and replacement conform to the repair or replacement rules of the ASME Code, Section XI. Type Code Symbol Stamp /,V/0 C ertificate t/ullrzto o. ,'.,/V/,-1' Signed Scott Esp6§ito Date 9-28-2002 

                         *_..*r    Owner's Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State of Province of V'/. and employed by                          .,5ýf e.7 of"        //& v~e,I-inspected the components described in this Owner's Report during the period *_to L          and state that to the best of my knowledge and belief, tee Owner has performed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damnage or a loss of any kind arising from or connected with this inspection. 

     ,C.*.f.-A_** __**                                 Commissions                                his inspection Inspector's Signature                                    National Board, State, Province, and Endorsements Date /0/-/, "i,%'too'-*-

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 09/24/02 Namr 4300 Winfield Road, Warrenville, II. Sheet 1 of I Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, II. Work Reauest No. 00340986- 04 Address Repair Organization, P.O No., Job No., etc.
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Rd, Byron II 61010 Expiration Date Not Applicable Address
4. Identification of System (RC) Reactor Coolant
5. (a) Applicable Construction Code Section III 1971 Edition, S72AW74 Addenda, (*) Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89 No Addenda
6. Identification of Components Repaired or Replaced and Replacement Components Natonal Repa-ed. ASME Name of Name of Manufacturer woard Other Year Replaced, Code-, Stamped Cormponent Manufacturer Semi No No Identiftcation Built or Replacement (Yes of No) 2.3" Inspection Westinghouse HT: B9422 n/a 2RCOIBD 1985 Repaired No Code: FE64 MJ-206A Port Cover
7. Description of Work Machine the gasket seating surface - MJ-206A - 2RC0IBD
8. Test Conducted: Hydrostatic [] Pneumatic [D Nominal Operating Pressure Z Other E] Pressure 1088 psi Test Temp. 556 OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated.

FORIM NIS-2 (Back) Remarks: (*) W74 for NB-2332(A)(2), NB-4332, NB-4334, .1, .2, NB-4332.2, NB-4335, .1, .2, .3 N8- Z33 (M) Code Cases 1355, 1493, 1484, 1528 L.)O 19v3qv)ei?L -,W CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPAIR conforms to the rules of the ASME Code, Section XI. ,, Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed Date IVA/ _ ,20 C CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by H.S.B. Ct. of Hartford, CT have inspected the components described in this Owner's Report during the period 51-/jj "L to / .z , and state that to the best of my knowledge and belief, the Ofnedr has performed examinations and takey(cofrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. __ , _ __ _ _ __ _ _ Commissions i,// Z / D eNaional Board2Sr.!¢ Proone. and Endonernat Date / ,20 

                           ,,ti   _*

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 09-27-02 Name 4300 Winfield Road, Warrenville, II. Sheet 1 of I Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, IIV. Work Request No. 0034988-01 SAddress . Repair Organization. P.O. No, Job No, etc.
3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 555 S. Joliet Rd, Bolingbrook, IL. 60440 Expiration Date Not Applicable Address
4. Identification of System REACTOR COOOLANT (RC)

(a) Applicable Construction Code Section Ill 1971 Edition, S72 Addenda, (*) Code Case 5. (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89_No Addenda

6. Identification of Components Repaired or Replaced and Replacement Components National Repaired, ASM .

board Other Year Replaced. Code, Stamped Name cf Name of Manufacturer (Yes or No) No Identification Bufl or Replacement Co.=,o-,nt Manufacturer Seril No T08083 n/a 2RCO1BB 1980 Replaced No 2.5" Access Cover Westinghouse MJ-180B HT: D6203/6 n/a 2RCOIBB 2002 Replacement No 2.5" Access Cover Westinghouse

  • MJ-ISOB S/N 1267-1 n/a 2RCOIBB 1990 Replaced No Heavy Hex Screw Westinghouse S2799 I"- 8, 3 '/Long MJ-180B Bolt #7 HT: 13484 n/a 2RCOIBB 2002 Replacement No Heavy Hex Screw Nova Machine r" -8, 3 '/"Long Products Code: A499 MJ-180B Bolt #7
7. Description of Work Replace Secondary Side Cover & Bolt #7 on Mi-1 80B - 2B Steam Generator
8. Test Conducted: Hydrostatic E3 Pneumatic [3 Nominal Operating Pressure 19 Other E] Pressure 1085 psi Test Temp. 557 OF in. x II in.,

Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 included on each sheet, and (3) each sheet is numbered and the number of (2) information in items I through 6 on this report is sheets is recorded at the top of this form. This form has been electronically generated.

FORM NIS-2 (Back)

9. Remarks (*) W74 for NB-2331(D), NB-2332(A)(2), NB-4332, .2, NB-4334, .1, .2, NB4335.1, .2, .3 Applicable Manufacturer's Data Reports to be attached Code Cases 1335, 1493, 1484, 1528 WO 00340988-01 CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this Replacement conforms to the rules of the ASME Code, Section XI. r w el-i Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed W Date 2002 CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Haaford, CT have inspected the components described in this Owner's Report during the period ",/*/ z q ý ', to 6u ", , and state that to the best of my knowledge and belief, tht'Owner has ferfefrmed examinations and takoi cotrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. 

                        * *
  • Commissions /a .... ia o,.nca an£do.__.t Date 20

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 9/27/02 Name Sheet I of 4300 W~infield Road, Warrenville, IL Address Unit 02
2. Plant Byron Nuclear Power Station Name
                                                                                           'Work Request No.                   0034989-01 4450 N. German Church Road, Byron, D1.                                                                Repair Organization, P.0 No, Job No, etc.

Address Type Code Symbol Stamp Not Applicable

3. Work Performed by N P S & W Venture Authorization No. Not Applicable Name 555 S. Joliet Rd, Bolingbrook, IL 60440 Expiration Date Not Applicable Address
4. Identification of System Reactor Coolant (RC) 19 71 Edition, S72* Addenda,
  • Code Case
5. (a) Applicable Construction Code Section 11I 19 89 (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components
6. Identification of Components Repaired or Replaced and Replacement Components Repatred. ASME National Other Year Replaced, Code; Stamped Name or Name of Manufacturer board No Identificalion Buot or Replacement (Yes or No)

Co,,fleet* Manufadut SeralaINo MK: T05634 n/a 2RCJ1BA 1980 Replaced No 2" Inspection Port Westinghouse M 52A Cover No IHT: D6203/6 n/a 2RCOIBA 2002 Replacement 2" Inspection Port Westinghouse SIN: 1266-1 MJ-152A Cover nMa 2RCOIBA 1980 Replaced No 2" Inspection Port Westinghouse MK: T05634 MJ-153A Replacement Cover No HT: D6203/6 n/a 2RCO1BA 2002 Replacement 2" Inspection Port Westinghouse S/N: 1198-2 MJ-153A Cover n/a 2RCOIBA - 1980 Replaced No 2" Inspection Port Westinghouse MK: T05634 MJ-154A _ Cover n/a 2RCOIBA 2002 Replacement No 2" Inspection Port Westinghouse HT: D6203/6 SIN: 1198-1 MJ-154A Cover Generator

7. Description of Work: Replace 2" Inspection Port Covers on MJ-152A, MJ-153A, MJ-154A-2A Steam Hydrostatic E] Pneumatic [D Nominal Operating Pressure 0
8. Test Conducted:

Other El Pressure 1083 psi Test Temp. 556 OF 8-1/2 in. x 11 in., Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is and the number of (2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered sheets is recorded at the top of this form. This form has been electronically generated.

FORM NIS-2 (Back) Remarks (*) W74 for NB-233I(D), NB-2332(A)(2), NB-4332, .2, NB-4334, .1, NB4335.1, .2, .3 

                              -I             AppItcable Manufacturcrs Data Repons to be attached Code Cases 1355, 1493, 1484, 1528 4/A'        -

CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this Replacement conforms to the rules of the ASME Code, Section XI. re...of .... Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed _--.. -Date o is- ,20 = 2. CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, Ct. have inspected the components described in this Owner's Report during the period to W/k& , and state that to the best of my knowledge and belief, the Ownrir has performed examinations and takA c6rrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with th is in sp e ct io n C m i I Z, CommissionssNnoturltional Board. Staie fttn ad Eindo ne Date 1&/. 5 ,20 01

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI Owner Exelon Nuclear Date 09-27-02 1. 

                                                  - Name 4300 Winfield Road, Warrenville, Ii.                                        Sheet 1                of 1 Address Plant Byron Nuclear Power Station                                           Unit    02 2.

Name 44.. N. German Church Rad. Byron: 11, WorkReqstNn- 00340987 -- 01 Address Repair Organization, P.O No, Job No., etc.

3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 555 S. Joliet Rd, Bolingbrook, IL. 60440 Expiration Date Not Applicable Address
4. Identification of System REACTOR COOOLANT (RC) 1971 Edition, S72 Addenda, (*) Code Case
5. (a) Applicable Construction Code Section Ill 19 89 No Addenda (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components
6. Identification of Components Repaired or Ijeplaced and Replacement Components Other Year Replaced, Code. Stamped Name of Manufacture9 board (Yes or No)

Name of Serial No - No ]dentificaton Buih or Replacemient CoponentCover 6" Handhole Manaface Westinghouse TO788q n/a 2RCOIBC 1980 Replaced No MJ-190B 2RCOIBC 2002 Replacement No 6" Handhole Cover Westinghouse HT: D6203/6 n/a S/N- 1266-1 MJ-190B I 2RCO1BC 1986 Replaced No Heavy Hex Screw Westinghouse HT: 13914 n/a MJ-193A 1"-8 3 14" (8typ) No n/a 2RCOIBC 2002 Replacement Heavy Hex Screw Nova Machine HT: 13484 Code: C885 MJ-193A 1"-8 3 IN" (8 typ) Products 

                                                                                                                          - 2RCOIBC
7. Description of Work Replace Access Cover for MJ-190B and Bolts on MJ-193A Hydrostatic El Pneumatic 0l Nominal Operating Pressure ED
8. Test Conducted:

Other 0] Pressure 1078 psi Test Temp. 557 OF (1) size is 8-1/2 in. x II in., Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided included on each sheet, and (3) each sheet is numbered and the number of (2) information in items I through 6 on this report is sheets is recorded at the top of this form. This form has been electronically generated.

FORM NIS-2 (Back) Remarks (*) W74 for NB-2331(D), NB-2332(A)(2), NB-4332, 2, NB-4334, .1, NB-4335, .I, .2, .3 ApplUicb Manutacturea's Data Repors to b atached 

                                                                                                  ý"

Code Cases: 1355, 1493-1, 1484, 1528 

       /',A,                         .       '9I../7a3
                                                     ? 01 CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this Replacement                             conforms to the rules of the ASME Code, Section XI.                                                                                 ,

Type Code Symbol Stamp Not Applicable Certificate of Authonzation No. Not Applicable Expiration Date Not Applicable Signed Date I /" , 2002 CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owner's Report during the period to ______/ _____, and state that to the best of my knowledge and belief, the 0 (ner has pet'Forried examinations and takelf coftective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. 

       &91Date-d         .*    "20 02
                   -ls'petnos &gStganx                           Commissions                       &I*" ,      om -1,
                                                                                                                   "  o i-c,   dn
                                                                                                                                ,Udor. t.

Date ,02./02

F;It: 3, ii. 111o FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 09-27-02 Name 4300 Winfield Road, Warrenville, II. Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron,_L. ",VWork Peoirert No. 00346096 - 01 Address Repair Organization, P.O. No., Job No, etc
3. Work Performed by N P S & WVENTURE T1ype Code Symbol Stamp Not Applicable Name Aiuthorization No. Not Applicable 555 S. Joliet Rd. Bolingbrook, 1L. 60440 Expiration Date Not Applicable Address
4. Identification of System REACTOR COOOLANT (RC)
5. (a) Applicable Construction Code Section 11 1971 Edition, S72 Addenda, (*) Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89 No Addenda
6. Identification of Components Repaired or Replaced and Replacement Components National Repaired. ASME Name of Name of Manufacturer board Other Year Replaced, Code, Stamped Component Manufacturer Serial No No identification Built or Replacement (Yes or No) 6" Handhole Cover Westinghouse T08133-41 n/a 2RC01BD 1980 Replaced No MJ-209B Handhole Cover Westinghouse HT: D6203/6 n/a 2RC01BD 2002 Replacement No S/N. 1239-4 MJ-209B Heavy Hex Screw Westinghouse T08001 n/a 2RC0IBD 1980 Replaced No 1"-8 3 V"(5 typ) MJ-210B Heavy Hex Screw Westinghouse T08907 n/a 2RC01BD 1980 Replaced No 1"-8 3 '/"(2 typ) MJ-210B Heavy Hex Sjrew iWes*hnhouse T07756 n/a 2RC01BD 1980 Replaced No I"-8 3 A"(/lyj) *r-_/_,_,/___MJ-210B Heavy Hex Screw- Noia Machine HT: 13484 n/a 2RCOIBD 2002 Replacement No 1"-8 3 /" (8 typ) Products Code: C885 MJ-2 10B
7. Description of Work Replace Sludge Lance Cover MJ-209B and Install longer Bolts on MJ-210B - 2RCOIBD
8. Test Conducted: Hydrostatic El Pneumatic Dl Nominal Operating Pressure 0 Other [] Pressure 1088 psi Test Temp. 556 OF Note: Supplemental sheets in form of lists, sketches, or drawings maybe used, provided (1) size is 8-1/2 in. x II in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back) Remarks (*) W74 for NB-2331(D), NB-2332(A)(2), NB-4332, NB-4334, .1, .2, NB-4335, .1, .2, .3 Applicable Manutacturer's Data Reports to be attached Code Cases 1355, 1493, 1484, 1528 M' h,'s ,'7*? elpq" ? /':,+ . CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this Replacement conforms to the rules of the ASME Code, Section XI. rpair c r.plac... Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed ,Datel Date ,2002 CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owner's Rep during the period j5P/411- to _ /a_ ,___ , and state that to the best of rmiyi knowledge and belief, the Owner has performed examinations and takencoffective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. Q.k*.*/ S* Inspector s Signature Commissions ./Z - Z-/' NalionalBoard State Province, and Endorsements Date /6 ,20 02

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI Owner Exelon Nuclear Date 09/23/02 1. Name Sheet I of I 4300 Winfield Rd, Warrenville, IL 60555 

                                        --         Address Unit     02
2. Plant Byron Nuclear Power Station Nane Work Request No. 990163293-01 4450 N. German Church Road, Byron, II.

Repair Orginization, P.O No,Job No, etc Address Type Code Symbol Stamp Not Applicable

3. Work Performed by Byron Mechanical Maintenance Nane Authorization No. Not Applicable I1. Expiration Date Not Applicable 4450 N. German Church Road, Byron, Address
4. Identification of System Residual Beat Removal (RI-I)
5. (a) Applicable Construction Code Section I11 19 71 Edition, S/72 Addenda, N Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and-Replacement Components Repaired. A^M.

Manufacturer 1latIonal 1 board Year Replaced, Code, Stamped NameName ame of No Identification Bu. or Replacement (Yes or No) Component ManufacIr mauatrrSn 5e,-eal NooNoA I oh nllflf t0'71 1 lurA or 4ceno IUOD l71* Relief Valve Crosby N56tU4-UU-UU0I INIA Fla-ed ____________~~~ L-. 01 I 1------ 

                                                                                                                               *A1t.d...i..

l 70 ep a"-,. i h.7-.. Relief Valve Crosby N56904-00-0055 750 Cat 11M.4 Iq, 2. I 4 f I t t t 4" + I 1-I I

7. Description of Work: Scheduled removal and replacement of relief valve
8. Test Conducted: Hydrostatic E] Pneumatic El Nominal Operating Pressure [

Other [] Pressure 33 psi Test Temp. 89 OF x 11 in., Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. sheet is numbered and the number of (2) information in items I through 6 on this report is included on each sheet, and (3) each sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back)

9. Remarks Work Order 990163293-01 Applicable Manufact.- rer'c fl,, P.nnr n CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this replacement conforms to the rules of the ASME Code, Section XI. I",,, c replace*,

en Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed -&,ýrlaJ-4g, Date /V -5 ,L200.J. CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors andl the State or Province of Illinois and employed by HSB CT of Hartford, Ct. have inspected the components described in this Owner's Report during the period _ _ _ _ _ _to /_______7__, and state that to the best of my knowledge and belief, the O'wnCer has performed examinations and taken c rrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XL. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. inspecim a Signature _______Commissions /2-,s National Board. ScarePro-ince and Endomernents Date IZ j5 J/, ,20

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI Date 09/22102

1. Owner Exelon Nuclear Name of I Sheet I 4300 W\infield Rd. Warren' ille, II. 60555 Address Unit 02
2. Plant Byron Nuclear PoNer Station Name Work Reauest No. 99150748-01 4450 N. German Church Road, Byron, D1.

Address Repair Organization, P.O. No, Job No, etc

3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable
                                                  .'arne                                Authorization No. Not Applicable 4450 N.      German       Church       Road, Byron, I!.                      Expiration Date Not Applicable Address
4. Identification of System RY - PRESSURIZER 19 71 Edition, W/72 Addenda,NIA Code Case
5. (a) Applicable Construction Code Section ))]

1989 (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components

6. Identification of Components Repaired or Replaced and Replacement Components Repaired, ASME National Other Year Replaced, Code; Siamped Namneof Manufacturer board Name of ldtmtlifoat ion Built or Replacement (Yes or No)

Manufacturer Serial No No Co, ... nt CAT.ID#24176 PRESSURIZER 1976 REPLACED YES CROSBY N56964-00-0031 NIA EPN.2RY8010A SAFETY VLV CAT. ID#24176 SPRESSURIZER 1977 REPLACEMENT YES SAFETY VLV. CROSBY N56964-"0-0089 N/A INLET NUTS CROSBY N90489-0429 thru NO N90489-0440 N/A 1976 REPLACED HT# 70929 lot N/A Cat ID# 26526 REPLACEMENT NO INLET NUTS CROSBY 2001 code DH I I I inlet nuts.

7. Description of Work REMOVE AND REPLACE SAFETY RELIEF VALVE, with new Hydrostatic El Pneumatic E0 Nominal Operating Pressure Z
8. Test Conducted:

Other El Pressure 2230 psi Test Temp. 652 OF (1) size is 8-1/2 in. x II in., Note: Supplcmental sheets in form of lists. sketches, or drawings may be used, provided included on each sheet, and (3) each sheet is numbered and the number (2) information in items I through 6 on this report is of sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back)

9. Remarks Work Order 99150748. Nozzle and disc for replacement valve were replaced, prior to installation, under purchase oi der 00041093, documented under separate NIS-2 and this work order.

Applicabi Manufaciurer s Data Reponrs o be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT conforms to the rules of the ASME Code, Section XI. ,,"P,,, ... Type Code Symbol Stamp NOT APPLICABLE Certificate of Authorization No. NOT APPLICABLE Expiration Date NOT APPLICABLE Signed ~D 4ALX .JADate .10 - / ,20_0.2, CERTIFICATE OF INSERVICE INSPECTION

1. the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and State or Province of ILLINOIS and employed by H.S.B.-I-&-,-em. c7V of Hlartford, CT. have inspected the components described in this Owner's Report during the period ____ to , . and state that to the best of my knowledge and belief, the GKvner has performed examinations and tal<e cofrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures desciibed in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. _____ _______-_____________ Commissions _ ___ ____ ____ Datenoo $S tgaNtoa Bo araP and L2doh0cm0t$ Date /*'1/'0 ,20 *ol

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 05/28102 "Name Sheet I of 1 4300 W~'infield Rd. NVarrenN ille. 11. 60555 Address
                                                                                          'Unit    02
2. Plant Byron Nuclear Pomer Station Nae 4450 N. German Church Road, Byron, 11. Work Reauest No. 99150748-01 Repair Organizatlion, P.O No, Job No, etc.

Address Type Code Symbol Stamp VR and NR

3. Work Performed by NWS Technologies, LLC Authorization No. 632 and 81 Expiration Date 04-03-03 and 04-09-03 131 Venture Boulevard. Spartanburg. SC 29306 Address
4. identification of System RY - PRESSURIZER (a) Applicable Construction Code Section iil 19 71 Edition, W/72 Addenda,N/A Code Case 5.

(b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 1989

6. Identification of Components Repaired or Replaced and Replacement Components National Repaird., ASME Other Year Replaced, Code, Siamped Nae of Manufacturer hoard B u sh or Re pl c e n eifm ( Yes o r No )

Nameof I No at ion Ide ntific M, nu fa e .ureT Se rial N o C o nr a oee No, I10,O71 D,1V. I-A Disc Insert CROSBY N90U3494-016-8[) N /A 

                                                                                                                                    $Jll T

11 iIv a o, NIA 170 DisF Inwen CROSBY N90349-82-0283 N/A 1N:1V1j1i- U-VVOY ep acIIIlt.1 I I1 N90555-45-0096 NIA 1977 Replaced No Nozzle CROSBY N9055-5-56-0128 N/A N4594-00-0089 1986 Replacement No Nozzle CROSBY

7. Description of Work Replaced valve nozzle and disc
8. Test Conducted: Hydrostatic [] Pneumatic [3 Nominal Operating Pressure El
                        //0                     Other []              Pressure                 psi       Test Temp.                                                 OF Note: Supplemental sheets in form of lists, sketches. or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.,

(2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been elecironcally renerated

FORM NIS-2 (Back)

9. Remarks Work Order 99150748-01 and purchase order 00041093 Appicabic Manufacturer's Data Repon. to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT conforms to the rules of the ASME Code, Section XI. p-,. ,P,,t.t Type Code Symbol Stamp NOT APPLICABLE Certificate of Authorization No. NOT APPLICABLE Expiratton Date NOT APPLICABLE Signed_(J (}.i .i.. Date /J-Q/0 ,20 ,

CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors anid the State or Province of ILLINOIS and employed by H.S.B. CT of Hartford, CT. have inspeciehe components descnbed in this Owner's Report during the period I/f/l/'tto , and state that to the best of my knowledge and belief, the Ovenerfias performed examinations and tal-n orrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any wart anty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property darnage or a loss of any kind arising from or connected with this inspection._0_1-___*-- Commissions . Datle.toc a Stgnaflf 20ndo..emcnaZ NatrOnalaoard , Paorncc and Date /f/7 ,20 T.,

FORM NVR-1 REPORT OF REPAIR to REPLACEMENT El OF NUCLEAR PRESSURE RELIEF DEVICES Corrected 5/28/02

1. Work performed by: NWS Technologies, LLC Purchase Order # 00041093 Rev. 002.

131 Venture Boulevard, Spartanburg, SC 29306

2. Work performed for: Commonwealth Edison Company - CornEd Byron Nuclear Station 3/4. Owner - name, address and identification of nuclear power plant: Byron Nuclear Station 4450 N. German Church Road Byron, IL 61010
5. a: Repaired pressure relief device: Pressurize r Safety Valve b: Name of manufacturer Crosby Valve & Gag e Co. __

c: Identifying nos. HB-BP-86 N56964-I00-0089 N/A steam 6M6 1977 (NB#) (service) (size) (yr.built) (type) (mfr's SIN) 1971 W72 I N/A I d: Construction Code: ASME Sec. III (Code Class) (namelsection/division) (edjtio) (addenda) (Code Cases(s)) 1989 N/A N/A

6. ASME Code Section Xl applicable for inservice inspection: (edition) (addenda) (Code Case(s))

1989 N/A N/A

7. ASME Code Section XI used for repairs, replacements: (editlon) (addenda) (Code Case(s))

1971 W72 N/A

8. Construction Code used for repairs, replacements: (edition) (addenda) (Code Case(s))
9. Design responsibilities: N/A
10. Opening pressure: 2485 psig Set-pressure adjustment made at: NWS Technologies, LLC using steam
11. Description of work (include name and identifying number of replacement parts): Disassembled, cleaned, inspected, replaced nozzle and disc, lapped, reassembled, set-pressure cert on steam. Seat tightness using N2.
12. Remarks: NWS Traveler # 02-73. Nozzle and disc supplied by Byron Station.

I Corrected stamo exoiration dates. CERTIFICATE OF COMPLIANCE I, Cesar V. Sierra certify that to the best of my knowledge and belief the statements made in this report are correct and the repair, modification or replacemtn of the pressure relief devices described above conforms to Section XI of the ASME Code and the National Board Inspection Code 'R'R" and "NR" rules. National Board Certificate of Authorization No. 632 to use the "VR" stamp expires April 3, 2003. National oard Certificate of Authorization No. 81 to usthe"N7," m e ires April 9, 2003. O,. NWS Technologies, LIC _ _____________ Manager. OA Date Repair utganization Autho ed lepresenjfv il CERI IFICATE OF INSPECIION / I, Charles F. Toegel Jr. holding a valid commission issued by The National Board of Boiler and Pressure Vessel Inspectors and certificate of competency issued by the jurisdiction of North Carolina and employed by Hartford Steam Boiler of CT of Hartford, CT have inspected the repair, modification or replacement described in this report on /4o..Z , and state that to the best of my knowledge and belief, this repair, modification or replacement has been completed in accordance with Section XI of the of the ASME Code and the National Board Inspection Code 'VR" and "NR" rules. By signing this certificate, neither the undersigned nor my employer makes any warranty, expressed or implied, concerning this repair, modification or replacement described in this report. Futhermore, neither the undersigned nor my employer shall be liable in any manner for any personal injury, property damage or loss of any kind arising from or connected with)his inspection. , . "" z*- I NB #8462, ANI NC#1073 L n 

           *       'nPgorsdPiatu;E"                                                           Commissions (N1 (incl endorsements), jurisdiction., no.)

%-.I

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 09/28/02 Name 4300 Winfield Rd. Warrenville, IL 60555 Sheet 1 of 1 Address Byron Nuclear Power Station Unit 02
2. Plant Name WO# 00471166-01 4450 N. German Chruch Rd. Byron, IL 61010 Address Repair Organization P.O., Job No., etc
3. Work Performed By Byron Mechanical Maintenance I"

Type Code Symbol Stamp Not Applicable Authorization No. Not Applicable 4450 N. German Chruch Rd. Byron, IL 61010 Not Applicable Address Expiration Date

4. Identification of System SA - SERVICE AIR
5. (a) Applicable Construction Code Section Il1 19 1974 Edition, W/ Addenda, N/A Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacements 19 89 (c) Section XI code Cases used, N/A
6. Identification of Components Repaired or Replaced and Replacement Components ASME Year Repaired, Code Name of Name of, Manufacturer National Other Board Identification Built Replacement (Yes or Component Manufacturer Serial No.

No. No) VALVE PLUG MASONEILAN 700529-12 N/A 2SA033 1999 REPLACED NO VALVE PLUG MASONEILAN 700529-11 N/A 2SA033 1999 REPLACEMENT NO Olq

7. Description of Work -44E,rT7i'b-, L.Jfl.iI- IAI V V r- p1 t ir ir
                                           -r-grim-11         A r-r-LLU-wr- M-WA IF-RE8HIRE                         0%-   1141a
              &II I  -                I
8. Test Conducted: Hydrostatic [I Pneumatic [D Nominal Operating Pressure E

[-' Pressure psi Test Temp. _ OF Other (2) NOTE: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 112 in. x 11 in., report is included on each sheet, and (3) each sheet is numbered and the number of information in items I through 6 on this sheets is recorded at the top of this form.

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section XI (Back)

9. Remarks WO 00471166-01 Applicable Manufacturer's Data Reports to be attached I

CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT conform to the repair or replacement rules of the ASME Code, Section XI. Type Code Symbol Stamp Not Applicable I Certificate of Authorization No. Not Applicable Signed V-ýG1 

               \..4Q        "     Qr. ior WK Ct Ir&.

Owner's Designee, Title Date I, ,20 t CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State of Province of Illinois and employed by H.S.B. CT. of Hartford, CT. Have inspected the components described in this Owner's Report during the period to ,r,,1Z& , and state that to the best of my knowledge and belief, th6 Owner has perfo(me'd examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. ____ -*._________________ Commissions __ _ '_-_'_ _ _ Inspector's Signature National Board, State, Province, and Endorsements Date ,20 seZ Date - rv

ER-AA-330-009 Revision 0 Page 32 of 36 ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section Xl Page I of 4

1. Owner Exelon Nuclear Date 9-24-02 Name 4300 Winfield Road, Warrenville. II. Sheet 1 of 1 Address 2._ Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron WORK ORDER: 00487154-01 Address Repair Organization P.O., Job No., etc
3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Authorization No. Not Applicablee' 555 S. Joliet Rd, Bolingbrook, IL. 60440 Expiration Date Not Applicable Address
4. Identification of System STEAM GENERATOR BLOWDOWN SYSTEM 5 (a) Applicable Construction Code ASME SECTION III 1974 Edition, S74 Addenda, 1644 Rev. 7. 1682, 1683, 1685, 1686, 1651, 1728, 1729, 1734, N-180, N-108 Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacements 1989 (c) Section XI code Cases used, NONE
6. Identification of Components Repaired or Replaced and Replacement Components T r r r r I ASME Repaired, Code Name of National Replaced, or Stamped Name of Manufacturer Other Year Manufacturer Board Replacement (Yes or Component Serial No. Identification Built No. No)

SNUBBER, PACIFIC- 21531 N/A 2SD01005S 1981 Replaced YES PSA-1/4 SCIENTIFIC SNUBBER, PACIFIC-' 3091. N/A 2SD01005S 1977 Replacement YES PSA-1/4 SCIENTIFIC -

7. Description of Work REPLACED SNUBBER
8. Tests Conducted: Hydrostatic [] Pneumatic [] Nominal Operating Pressure 0 V*J-_5 OtherIZOressure _ psi Test Temp. - F NOTE: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 in. x 1I in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section Xl 9 Page 2 of 4

9. Remarks M Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and replacement conform to the repair or replacement rules of the ASME Code, Section XI.

Type Code Symbol Stamp `/IA Certific of Authorizal2o ,, Signed'Scott Esposto Date 9-28-2002 Owner or Owner's Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vesl)sc. and the State of Province of V/1. and employed by /11s, 4 r of have inspected the components described in this Owner's Report during the period gA44to 

    ,4 and state that to the best ofmyknowledgeandbelief, e Owner has performed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damae or a loss of any kind arising from or connected with this inspection. _ __Commissions ,/_Z_-,_'._ "_r SInspector's Signature National Board, State, Province, and Endorsements Date 9.4, 1'9. po k

ER-AA-330-009 Revision 0 Page 32 of 36 ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section Xl Page I of 4

1. Owner Exelon Nuclear Date 9-24-02 Name 4300 Winfield Road, Warrenville. II. Sheet 1 Of 1 Address
2. Plant Byron Nuclear Power Station Unit 02 Name WO WORK ORDER: 00391323-01 4450 N. German Church Road, Byron Address Repair Organization P.O., Job No., etc
3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Authorization No. Not Applicable 555 S. Joliet Rd, Bolingbrook, IL. 60440 Expiration Date Not Applicable Address
4. Identification of System STEAM GENERATOR BLOWDOWN SYSTEM 5 (a) Applicable Construction Code ASME SECTION III 1974 Edition, S74 Addenda, 1644 Rev. 7, 1682, 1683, 1685, 1686, 1651, 1728, 1729, 1734, N-180, N-108 Code Case (b) Applicable Edition of Section Xl Utilized for Repairs or Replacements 1989 (c) Section XI code Cases used, NONE
6. Identification of Components Repaired or Replaced and Replacement Components T r r ASME Repaired, Code Name of National Replaced, or Stamped Name of Manufacturer Manufacturer Board Other Year Serial No. Identification Built Replacement (Yes or Component No.- No)

SNUBBER, PACIFIC- 1185 N/A 2SDO1003S 1979 Replaced YES PSA-1/2 SCIENTIFIC SNUBBER, PACIFIC- 3997 N/A 2SDO1003S 1977 Replacement YES PSA-1/2 SCIENTIFIC

7. Description of Work REPLACED SNUBBER
8. Tests Conducted: Hydrostatic E] Pneumatic [] Nominal Operating Pressure fl VJ Other CV Pressure __ psi Test Temp. - OF NOTE: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 % in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section Xl Page 2 of 4

9. Remarks Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and replacement conform to the repair or replacement rules of the ASME Code, Section X1.

Type Code Symbol Stamp ,,v* Certificat ut oriz ti n No. 1014 Signed'Scott Espsito Date 9-28-2002 Owner or Owner's Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State of Province of r and employed by 14ý4 4. ___,6,id,nc t o0 __' have inspected the components described in this Owner's Report during the period 0 to and state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. __________,___,"_ Commissions /dL-/Z.15V A' Inspector's Signature National Board, State, Province, and Endorsements Date 1,&.40.,, IQ_,

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 09/27/02 Name Sheet I of I 4300 Winfield Rd. Warrenville, 11. 60555 Address Unit 02
2. Plant Byron Nuclear Power Station Name Work Request No. 00357065-02 4450 N. German Church Road, Byron, II.

Repair Organization, P.O. No, .JobNo, etc. Address Type Code Symbol Stamp Not Applicable

3. Work Performed by Byron Mechanical Maintenance Name "AuthorizationNo. Not Applicable Expiration Date Not Applicable 4450 N. German Church Road, Byron, II.

Address

4. Identification of System SI SAFETY INJECTION
5. (a) Applicable Construction Code Section 111 19 77 Edition, Sf77 Addenda,1644-8 Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and Replacement Components National Repaired, ASME board Other Year Replaced, Code. Stamped Name of Name of Manufacturer No Identificaiwon Bul or Replacement (Yes or No)

Componen.t Manufacturer Serial No SWAY STRUT ELCEN METAL N/A 2SI06BOIX N/A 1983 REPLACED YES TUBE WELD PROD. SWAY STRUT ELCEN METAL, N/A 2SI06BOIX N/A 2002 REPLACEMENT- NO TUBE WELD PROD. SW STRUT RR ELCEN METAL N/A 2SI06BOIX N/A 1983 REPLACED YES BRKT. WELD PROD. N/A 2SI06B01X SW STRUT RR ELCEN METAL N/A 2002 REPLACEMENT NO BRKT. WELD PROD.

7. Description of Work REMOVE AND REPLACE SWAY STRUT TUBE AND REAR BRKT. WELDS PER EC# 79261.
8. Test Conducted: Hydrostatic [] Pneumatic E] Nominal Operating Pressure EQ V7"-3 Other [A Pressure psi Test Temp. OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back) Remarks WO 00357065-02 Applicable Manutacturer's Data Reports to be attached 0 9. CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this Replacement conforms to the rules of the ASME Code, Section XI. rep-a repisoeet Type Code Symbol Stamp NOT APPLICABLE Certificate of Authorization No. NOT APPLICABLE Expiration Date NOT APPLICABLE Signed

  • nR tgrrA Date 013 ,20 ov.

CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of ILLINOIS and employed by H.S.B. CT. of Hartford, CT. have inspected the components described in this Owner's Report during the period to , and state that to the best of my knowledge and belief, tht'Owiier has performed examinations an take6 corrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspectio,. __________-________________ Commissions //-d. /Z53q 

                             ¶,naph e:**l
                                    -oo" s*igrrtre                                                                 Naihal Board.Siate Proinnce..sM Eadaetaem tia Date     O                              ,20    p,

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear ame Date D! S..
                            . .N 4300 Winfield Road, Warrenville, IL                                     Sheet 1                 of I               - 0'1 Address 00367097                             S-
2. Plant Byron Nuclear Power Station Unit 02 No.

Name Request No. 00367097 - 01 4450 N. German Church Road, Byron, IL WorkWork Request Address Repair Organization, P.O No, Job No, etc

3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable
                                                , Narne                           Authorization No. Not Applicable 555 S. Joliet Rd, Bolingbrook, IL. 60440                               Expiration Date Not Applicable A.dieSs
4. Identification of System ESSENTIAL SERVICE WATER-
5. (a) Applicable Construction Code Section 111 19 74 Edition, S/75 Addenda, )oV., r Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89 No Addenda
6. Identification of Components Repaired or Replaced and Replacement Components National Repaired. ASME Nme of Name of board Other O, Year Replaced. Code. Stamnped Component Marifacturer Semi No No Identficatbon Built or Replacement (Yes or No)

Cal.D 36" Flange Coffer Corp. Ht# PCD2 N/A 1231968 2002 Replacement NO c44 XAV Cat ID 36'" Pipe Dalmine Ht# 202401 N/A 10660 1990 Replacement NO

7. Description of Work Fabricated Pipe Spools to be used for SX valve replacment, if required. SI'AEC 3,Lpe I yvt
8. Test Conducted: Hydrostatic E] Pneumatic [] Nominal Operating Pressure [E bL/4 Other [] Pressure psi Test Temp.

Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in., (2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. Tlis form has been electronically generated.

Wo OC,3 (,76,1/'7-Of FORM NIS-2 (Back) Remarks -4 2~s -1 ý W f-1 t ~N7 J Jacrtai e os be ac 

                .!Pý4r    -)/  e-    W     ý     APP ucao11eS wJCY ie CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this &10(q efw/-conforms to the rules of the ASME Code, Section XI.                                                                         rew",.It Type Code Symbol Stamp                                    Not Applicable Certificate of Authorization No. Not Applicable                                         Expiration Date Not Applicable Signed             ,                             ?..          C004c~                                 Date   J~e,              ,200'.a CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors ahd the State or Province of                    Illinois                                  and employed by                H.S.B. I&I Co.

of Hartfgrd,CT have inspect d the components descnbed in this Owner's Report during the period OZ47-) to . N , and state that to the best of my knowledge and belief, the Dwfer has performed examinations an t n corrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be hable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. Date , 20

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 05/24/02 Name 4300 Winfield Rd, Warrenville, Ii; 60555 Sheet 1 of I Address
2. Plant Byron Nuclear Power Station Unit 00 Name 4450 N. German Church Road, Byron. II. Work Reauest No. 403833-01 Address Repair Organization, P.O. No, Job No, etc
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, II. Expiration Date Not Applicable Address
4. Identification of System Essential Service Water (SX)
5. (a) Applicable Construction Code Section III 19 74 Edition, S/76 - Addenda, n/a Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and Replacement Components Nationa Repaired, ASME
   - Name of                - Name of                Manufacturer            board                   Other                 Year      -      Replaced,    Code*, Stamped Component               Manufacturer                Serial No              No                  Idetilication            Built         or Replacement    (Yes or No)

Pump Bowl Johnston Pump NJ 1945 n/a OSX02PA 1979 Replacement yes Assembly Pump Bowl Johnston Pump NRT-5533 n/a OSX02PA 1999 Replaced yes Assembly

7. Description of Work: Replaced pump bowl assembly
8. Test Conducted: Hydrostatic El Pneumatic El Nominal Operating Pressure E]
                  #1b                   Other []                  Pressure               psi    Test Temp.                                      OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x II in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated.

FORM NIS-2 (Back)

9. Remarks: pump bowl assembly replaced per WO 403833-01. Repair/Replacement Report and NIS-2 not initiated during work activity - documented on Condition Report 124108. Replacement bowl assembly s/n NJ 1945 was refurbished per purchase order 00017235 revision 2 and accepted per receipt inspection 56945.

Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this replacement conforms to the rules of the ASME Code, Section XI. repair".rpla.e..t Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed (&),44 W 

                                      "       A44, 0-vcft s D-g-ge. Title Date j               -g           ,20 O CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois                                                                          and employed by HSB CT of Hartford, Ct.                                                                       have inspected t e co ponents descnbed in this Owner's Report during the period                    "4               C                                to                ,/7,,t ,.                           , and state that to the best of my knowledge and belief, the O er as performed examinations and takef corc6tive measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind ansing from or connected with this inspection. nspwNalgtatwn __ __ __ Commissions /2 '," Sacal Board Stale Pro- c... d Endoraemeil Date , k.i ,20 o'r

FORM NIS-2 OWVNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 09/19/02 Name 4300 Winfield Road, Warrenville, IL Sheet Iofi1 Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road. Byron. II. Work Request No. 99277795-01 Address Repair Organization, P.O. No., Job No, etc.
3. Work Performed by N P S & W Venture Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 555 S. Joliet Rd, Bolingbrook, IL 60440 Expiration Date Not Applicable Address
4. Identification of System Essential Service Water (SX)
5. (a) Applicable Construction Code Section Il1 19 74 Edition, S75 Addenda, none Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and Replacement Components National Year Repaired, ASME Name of Name of Manufacturer Board Other Year Replaced, Code, Stamped Component Manufacturer Serial No No ldeitficatoon Built Or Replacement (Yes or No) 6" pipe Hunter tit. # 405060 N/A 2SAi3 A-O I Voy Replaced 1,4
                                         -         --                                                                       tz=-t.       epiacemenr
                                                                                                                                             .                P40 w  6"'pipe                  Consolidated            Ht. # C25749            N/A                                                2002       Replacement          INO IPnrawnr*tin1rlv                                                     i2SX25AA-b" Power Sup pI 6" elbow                 Hunter                  Ht # V 1261             N/A                  2SX25AA-6"                    1989       Replaced             No 6" elbow                 Consolidated             Ht. # H4 17K       -   N/A                  2SX25AA-6"                    2002       Replacement          No

____________Power Supply _________________

7. Description of Work: replaced pipe and elbow
8. Test Conducted: Hydrostatic F1 Pneumatic [: Nominal Operating Pressure [

Other E] Pressure I00psi Test Temp. 70°F Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in., (2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back)

9. Remarks Work order 99277795-01, Code Case N416-1 applied for this work order.

Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this replacement conforms to the rules of the ASME Code, Section XL. rr a.r .... Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed C"y* Qk-*,M*-' Date 12- ,20 0 .2. SOwner's Dmsirýt Tne CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors anid the State or Province of Illinois and employed by HSB CT of Hartford, Ct. have inspected the components described in this Owner's Report during the period t-o. t //- / , and state that to the best of my knowledge and belief, the Owner has performed examinations and tak6n eborrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner fQr any personal injury or property damage or a loss of any kind arising from or connected with this inspection. ______¢'/_ _*__-__________ InSp*'tor a Signatunt Commissions __Z_-_/z_ _ _ _ National 

                                                                                                                       . aard,.Stae Province, and Endorarenn Date       *ra      ,               ,20     a7

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 3/6/02 3/&vlo2..

Namne 4300 WVinfield Road, Warrenville, IL Sheet I of 1 Address

2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road. Bvron. 11. Work Request No. 00367095-01 & 99097014-01 Address Repair Organization, P.O No ,Job No, etc
3. Work Performed by N P S & W Ven7ture Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 555 S. Joliet Rd, Bolingbrook, IL 60440 Expiration Date Not Applicable Address
4. Identification of System Essential Service Water (SX)
5. (a) Applicable Construction Code Section 111 19 71 Edition, S75 Addenda, None Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and Replacement Components National Repaured, ASME Name of Name of Manufacturer board Other Year Replaced, Code, Stamped Co=pnen Manufacturer Semil No No Identification Built or Replacement (Yes or No)

Studs Hunter Corp HP36 n/a MJ-28A 1984 Replaced .., No 

      ,                                                                                       2SX001A Threaded Rod              Nova Machine             H: 67944               n/a                 MJ-28A                          1996       Replacement ,'       No 1 'A" x 8                 Products                 T: KYG                                     2SX001A Threaded Rod              Nova Machine             H: 28901               n/a                 MJ-28A                         2002        Replacement ,        No I '" x 8                  Products                 T: E250                                    2SX001A Heavy Hex Nuts            Hunter Corp              HP38                   n/a                 MJ-28A                          1984       Replaced        e    No I   '"  x8                                                                                    2SX00IA Heavy Hex Nuts            Nova Machine             H: 681A037             n/a                 MJ-28A                          1998       Replacement ol       No 1 2"x 8                   Products                 T: KYU                                     2SX001A Heavy Hex Nuts            Nova Machine             H: El                  n/a                  MJ-28A                         1998       Replacement ,        No 1 "x 8                    Products                 T: C                                        2SX001A Heavy Hex Nuts            Nova Machine             H: 119082               n/a                 MJ-28A                         2001       Replacement        , No 1  'A" x 8                Products                 T: NKL                                      2SX001A
7. Description of Work: Replace Studs/Nuts on Valve 2SXOOIA (MJ-28A)
8. Test Conducted: Hydrostatic E] Pneumatic [] Nominal Operating Pressure El WA Other EQ Pressure psi Test Temp. OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated.

FORM NIS-2 (Back) Remarks --anfatu-c-w/ 777`bl ons 0 at a l 0 QQ&O3?c7ij--o t CAI, 0-3 j -70 1-el-o I CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this 1__,_,_ce__f conforms to the rules of the ASME Code, Section XL.--,i . rel,,eme, Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed Date /( ,20 C* CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, Ct. have inspected t e components descnbed in this Owner's Report during the period 7 w.T,'Ij7. ý,F- to . , and state that to the best of my knowledge and belief, the Ownel- has perf~rm(d examinations and taK'recorrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this in5cn. Inp orSiga e _______Commissions ,7 ,~ Naioa Board Slate Provnce and Endormenfi.i Date , 20 efl,

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 09/24/02 Name 4300 WVinfield Road, Warrenville, H. Sheet 1 of I Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, 1I. Work Request No. 97088356-01/08
                                               , Address                                                       Repair Organization, P.O. No, Job No., etc
3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 555 S. Joliet Rd, Bolingbrook, IL. 60440 Expiration Date Not Applicable Address
4. Identification of System Essential Service Water (SX)
5. (a) Applicable Construction Code Section III 19 74 Edition, S/75 Addenda, N/A Code Case (b) Applicable Edition of Section Xl Utilized for Repairs or Replacement Components 1989 No Addenda
6. Identification of Components Repaired or Replaced and Replacement Components National Repaired. ASME Name of Name of Manufacturer board Other Year Replaced, Code, Stamped co=mponen Manufacturer Serial No No ldeniification Built or Replacement (Yes or No)

BOLT, STUD I-1/2" X 19-3/4" HUNTER CORP HT CODE# HP-34 N/A 2SX001B 1978 REPLACED NO BOLT, STUD 1-1/2" X 19-3/4" HUNTER CORP NT CODE# E880 N/A 2SX001B 2002 REPLACEMENT NO BOLT, STUD 1-1/2" X 7-3/4" HUNTER CORP HT CODE# HP-37 N/A 2SX001B 1978 REPLACED NO BOLT, STUD 1-1/2" X 7-3/4" HUNTER CORP HT CODE# E880 N/A 2SX001B 2002 REPLACEMENT NO BOLT, STUD 1-1/2" X 7-1/4" HUNTER CORP HT CODE# HP-36 N/A 2SX001B 1978 REPLACED NO BOLT, STUD 1-1/2" X 7-1/4" HUNTER CORP HT CODE# E880 N/A 2SX001B 2002 REPLACEMENT NO NUTS, H.H. 1-1/2" HUNTER CORP HTCODE# HP-38 N/A 2SX001B 1978 REPLACED NO NUTS, H.H. 1-1/2" NOVA HT CODE4 D303 N/A 2SX001B 2002 REPLACEMENT NO

7. Description of Work Replaced all 32 valve studs and 64 nuts
8. Test Conducted: Hydrostatic E] Pneumatic [] Nominal Operating Pressure Q
                     //                   Other []                 Pressure              psi     Test Temp.                                      OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back)

9. Remarks This NIS-2 documents stud and nut replacements performed under work order tasks 97088356-01 and 97088356-08.

Studs and nuts were replaced one at a time, pressure boundary not broken. Applicabie Manutacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this replacement conforms to the rules of the ASME Code, Section XI. rwairlact.n Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed (jL4qd , A. ,. ,Date /0-/0 ,20 0.7 CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by H.S.B. CT of Hartfgrd, CT _ have inspected the components descnbed in this Owner's Report during the period 5 " z4' 

                                       'AZ                                 to          X/0/CIA/                        , and state that to the best of my knowledge and belief, thee Oner has perfomed examinations and taKen Corrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. Commissions Date IS' 20

I FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI Date 09/27/02

1. Owner Exelon Nuclear Name Sheet I of I 4300 'infield Rd, Warrenville, IL 60555 Address Unit 02
2. Plant Byron Nuclear Power Station Name Work Request No. 99174560-02 4450 N. German Church Road, Byron, I1.

Repair Organization, P.O No., Job No, etc Address Type Code Symbol Stamp None

3. Work Performed by Byron Mechanical Maintenance Authorization No. Not Applicable Name Expiration Date Not Applicable 4450 N. German Church Road, Byron, I.

Address

4. Identification of System Essential Service Water (SX) 1974 Edition, S75 Addenda, none Code Case
5. (a) Applicable Construction Code Section III (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89.NA
6. Identification of Components Repaired or Replaced and Replacement Components Repaired, ASME National board Other Year Replaced, Code; Stamped Nameof Name of Manufacturer A
        "=,Co  fnt             Manufactarer               Seil No               No                  Idertifcation             Built        or Replacemetm       (Yes or No)

N/A Spool Piece S-SX-100- 1985 Replaced yes Pipe -2" Hunter Corp. Heat # JD1571 129, 2SX58AB-2" I Cat ID 1032249, 2001 Replacement Yes "GateValve Flowserve S/N E362T-l-2 N/A 2SX2199B_ S/N E-093T-2-8 N/A Cat ID 1032250, 2000 Replacement Yes Gate Valve Flowserve 2SX2200B N/A Cat ID 24415, 2002 Replacement No Pipe-l-I/2" Consolidated Heat # 287314 2SXKIAB-1-1/2" Power Supply N/A Cat ID 24455, 2002 Replacement No Pipe Tee-2" Consolidated Heat # R41S 2SX58AB-2" Power Supply N/A Cat ID 27291, 2002 Replacement No Reducing Insert Consolidated Heat # 20M Power Supply 2SXKIAB - 1-1/2"

7. Description of Work: Installation of new SX valves and fittings per modification 9900554.
8. Test Conducted: Hydrostatic Dl Pneumatic El Nominal Operating Pressure 0 Other El Pressure 100 psi Test Temp. 75 OF in. x 11 in.,

Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 is numbered and the number of (2) information in items I through 6 on this report is included on each sheet, and (3) each sheet sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back) Remarks Installation per Work Order 99174560-02 and DCP 9900554 Applicable Manufacturer s Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this replacement conforms to the rules of the ASME Code, Section XI. reair a. rpla.e... Type Code Symbol Stamp Not Applicable Certificate of Authorization No Not Applicable Expiration Date Not Applicable Signed _(bC4AJo C&. A,1U,wre aoDetipgne. TakI Date q-; 7 ,200.2 CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HS1SB CT of Hartford, Ct. have inspec ed t9e components described in this Owner's Report during the period 5/4 ?7,Pto ;1 , and state that to the best ofmy knowledge and belief, the Ownerdhas performed examinations and t en/corrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, conceming the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. 

       #40          lsipw    Sinawre                                       Commissions                                   SlatePravnce andEndownnmsrt Date                       ,7     20 0,

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 10/02/02 Name 4300 W11infield Rd. Warrenville, I1.60555 Sheet I of I Address
2. Plant Byron Nuclear Power Station Unit 02 Name S.... N. German Church Road. Byron. I!.

4450 . . . .. I II d Work Order No. 99279057-01 Address Repair Organization, P.O No., Job No, etc

3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, Ii. Expiration Date Not Applicable Address
4. Identification of System [SX] ESSENTIAL SERVICE WATER
5. (a) Applicable Construction Code Section III 19 74 Edition, S/76 Addenda, N/A Code Case I (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 1989
6. Identification of Components Repaired or Replaced and Replacement Components "P Other Year Repaired.

Replaced, ASME Code, Stamped Name of Name of Manufacturer Component Manufacturer Serial No I No Identification Built or Replacement (Yes or No) HX-TNLET END AMERICAN N/A, EPN'2SX01K 1978 RKELACEbD YES COVER STANDARD SIN: 77A-20007-01-3 Y bS HX-INLET END ENERGY STEEL NPT 19030101-1 N/A CAT ID.# 1234920 2002 1REPLACEMENT YES I COVER & SUPPLY CO. COVER I

7. Description of Work REPLACED INLET HEAT EXCHANGER END COVER
8. Test Conducted: Hydrostatic E] Pneumatic [3 Nominal Operating Pressure [

Other [] Pressure 114 psi Test Temp. 76 OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x II in., (2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back)

9. Remarks Work Order 99279057-01 Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this replacement conforms to the rules of the ASME Code, Section XI rep-ar rpew Type Code Symbol Stamp NOT APPLICABLE Certificate of Authorization No. NOT APPLICABLE Expiration Date NOT APPLICABLE Signed (fJaA'iA . Date /1-3o ,20 oa;._

CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of ILLINOIS and employed by H.S.B. CT. of Hartford, CT. have inspected the omponents described in this Owner's Report during the period I to 4 9.' , and state that to the best of my knowledge and belief, the Own&r has performed examinations and tatn c'rrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. Commissions - -a.q cl NalionalBoard. NtatePtroointtesodEndoar-ments Date k l 30 _. ,20 17,

ER-AA-330-009 Revision 0 Page 29 of 36 ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR-REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section Xl Page 1 of 4

1. Owner Exelon Nuclear Date 09/29/02 Name 4300 Winfield Rd. Warrenville, IL 60555 Sheet I of I Address Byron Nuclear Power Station Unit 02
2. Plant Name WO# 00430425-04 4450 N. German Chruch Rd. Byron, IL 61010 Address Repair Organization P.O., Job No., etc
3. Work Performed By Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Authorization No. Not Applicable 4450 N. German Chruch Rd. Byron, IL 61010 Expiration Date Not Applicable Address
4. Identification of System VA- AUX. BUILDING HVAC
5. (a) Applicable Construction Code Section III 19 74 Edition, S176 Addenda, N91 Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacements 19 89 (c) Section XI code Cases used, -_,,_

A014

6. Identification of Components Repaired or Replaced and Replacement Components ASME National Other Year Repaired, Code Name of Name of Manufacturer Board Identification Built Replacement (Yes or Component Manufacturer Serial No.

No. No) CHANNEL TRANE CO. N/A - N/A 2VA08S 1980 REPLACED NO HEAD BOLT CHANNEL NOVA HT# 8092338 N/A CAT. ID#36960 1996 REPLACEMENT NO HEAD BOLT 'Machine

7. Description of Work REPLACE LOST/MISSING 3/8"-16X4" CHANNEL HEAD BOLT
8. Test Conducted: Hydrostatic E] Pneumatic LI psi Nominal Operating Pressure I Test Temp.

Other -I -Pressure Jl.L 7(, - OF NOTE: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 112 in. x 11 in., (2) of W information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number sheets is recorded at the top of this form.

ER-AA-330-009 Revision 0 Page 30 of 36 ATTACHMENT 4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section XI Page 2 of 4

9. Remarks WO# 00430425-04 Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT conform to the repair or replacement rules of the ASME Code, Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Signed In.ý-ArA. A; 1,1, 

                     ,,             ner FOwner's Designee, Title Date        /0-01? ,20              0 d-.

CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State of Province of Illinois and employed by H.S.B. CT. of Hartford, CT. Have inspected the components described in this Owner's Report during the period to ,z and state that to the best of my knowledge and belief, thhs perfumed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. SL4*4Commissions /,g/Z /Zssf Inspectors Signature National Poard, Stale, Province, and Endorsements Date e2 ,20O Z 4

4 FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date II1blo Name 4300 W,'inficld Rd. Warremille, B1. 60555 Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, IL Work Renuest No. 99285126-01 Address Repair Organizason, P.O. No. Job No. etc.
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Addres
4. identification of System WE - AUX BLDG EQUIP DRAINS Edition, Addenda, S75 Voilve_ t, m, Code Case
5. (a) Applicable Construction Code Section I1 191174 7 446 S7f, (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19. 89
6. Identification of Components Repaired or Replaced and Replacement Components NTme of Nme of Manufactim Natorm board Other Ya Yer Repmd Replaeed, ASM.E Code, Stamped Co~mpnent Manufarturer Seial No No Idenwfiation BUiMt or Replacement (Yes or No) 3" SCH.40 PIPE HUNTER CORP HT 143805 N/A 2WER7AA 1984 REPYLACED* NOt
           -    --     I-------------                                t......               t....,,-......                   I 'So'.
                                                                                                                              .noa    I ILLkL1J nrrn ,nrt'.

i'.".) HkT AHKN N/A Iva-# AZZ"Aýti%-r.u SWAGE NIPPLE HUNTER CORP 2 WE t'.A P 2" S.W. ELBOW HUNTER CORP HIT M240 N/A 2WE82AA 1984 REPLACED NO 2" SCH.80 PIPE HUNTER CORP. HT AA NIA 2WE82AA 1984 REPLACED NO 3" SCH 40 PIPE CONSOLIDATED N/A 2WER7AA REPLACEMENT POWER HT B25985 2001 REPLACEME NO SWAGE NIPPLE CONSOLIDATED N/A 2WER7AA REPLACEMENT POWER HT 8860857 2001 NO 2" S.W. ELBOW CONSOLIDATED HT 77763/37763 N/A 2WE82AA REPLACEMENT POWER 2001 NO 2" SCH 80 PIPE N/A 2WE82AA REPLACEMENT CONSOLIDATED HT 720254 2001 , NO 2" GLOBE ANDERSON 3335 N/A 2WE010A 1978 REPLACED YES VALVE GREENWOOD P 2" GLOBE ANDERSON A1614 2WE010A REPLACEMENT YES VALVE GREENWOOD I NIA 11979

7. Description of Work REPLACE DRAIN LINE PIPING AND VALVE
8. Test Conducted: Hydrostatic [] Pneumatic [] Nominal Operating Pressure [

Other [I Pressure j psi Test Temp. "71 OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated.

r FORM NIS-2 (Back)

9. Remarks 17-f) V-0 Ke I C0 Xe: C 4 Applcable M NP'IIL-!

ICnt*U S UaU KtporLS to be anachea CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this , -conforms to the rules of the ASME Code, Section XI. Type Code Symbol Stamp NOT APPLICABLE Certificate of Authorization No. NOT APPLICABLE Expiration Date NOT APPLICABLE Signed h:ý) §r/Y l t; Date 1,20 C?. CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of of Hartford, CT. ILLINOIS and employed by I.S.. H5 c' have inspected the components descnbed in this Uwvner's Report during the penod ____________to * -))- . ,and state that to the best of my knowledge and belief, the Owder has performed examinations and taken corrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. Co si--.i5. 

                          . ~iki              L~Commissions                            rlS-'
  • i4- 5 )

Date -j * ,20

FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI I. Owner Exelon Nuclear Date 08/13/02 SNatme 4300 N,'infield Rd. Warrenville, II. 60555 Sheet I of 2 Address Plant Byron Nuclear Power Station Unit 02 2. Narm 4450 N. German Church Road, Byron, i]. Work Order No. 99285127-01 Address ,Repair Organization, P.O No , Job No, etc.

3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name - Authorization No. Not Applicable 4450 N. German Church Road, Byron, II. Expiration Date Not Applicable Address
4. Identification of System WE- Aux. Building Equipment Drains
5. (a) Applicable Construction Code Section Il1 19 74 Edition, s75 AddendaN/A Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 1 89
6. Identification of Components Repaired or Replaced and Replacement Components National Repaired. ASME Manufacturer Board Other Year Replaced, Code; SanVed Name of Name of Coponent IManufacturer Seral No No Idenification But or Replacement (Yes or No)

PIPE, 3 IN HUNTER CORP. HT # 26324 N/A 2WER7AB 1983 REPLACED NO SCH. 40 PIPE, 3 IN. EXELON HT #B25985 N/A 2WER7AB 2001 REPLACEMENT NO SWAGE NIPPLE, HUNTER CORP HT #AHKN N/A 2WER7AB 1983 REPLACED NO 3X2 SWAGE NIPPLE, EXELON HT#751ZNF2 N/A 2WER7AB 2002 REPLACEMENT NO 3X2 COUPLING HUNTER CORP. HT #BN02 N/A 2WE82AB 1983 REPLACED NO 2", 3000# COUPLING EXELON HT #297YNB N/A 2WE82AB 1997 REPLACEMENT NO 2", 3000# PIPE, 2 IN. HUNTER CORP HT #AA N/A 2WE82AB 1983 REPLACED NO SCH. 80 PIPE, 2 IN EXELON 720254 N/A 2WE82AB 200 REPLACEMENT NO SCH. 80 GLOBE VALVE, ANDERSON S/N A3338 N/A 2WEOIOB 1978 REPLACED YES 2 IN. GREENWOOD GLOBE VALVE, ANDERSON S/N A1335 N/A 2WE010B 1978 REPLACEMENT YES 2 IN. GREENWOD

7. Description of Work REPLACE PIPING AND VALVE
8. Test Conducted: Hydrostatic E] Pneumatic [3 Nominal Operating Pressure Z Other E] Pressure q psi Test Temp. "71 -F Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x II in.,

(2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. This form has been electronically generated

FORM NIS-2 (Back) Remarks Pvo Applicable Manufa-cturer's Data Reports to b attached tOo '?43-a7--9I CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this*..p.* .,-conforms too th M~ciZM~qconfrms therrules off the ASMEM Code, Section XI. ,e,.. rlcm , Type Code Symbol Stamp NOT APPLICABLE Certificate of Authonzation No. NOT APPLICABLE Expiration Date NOT APPLICABLE Signed S q7 Date /i ,20 09 CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of ILLINOIS and employed by H.S.B. CT. of Hartford, CT. have inspected the components descnbed in this Owner's Report during the penod z,, ei to IFA,/I,* , and state that to the best of my knowledge and belief, the o0 er fias performed examinations and taken 'orrective measures described in the Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. 

        -- _                                                   Commissions                            /ZZ -                   It Nationl hoard.Staic ateto-t  . atd Endaorsemt*et Date                 .      ,20 O

4* FORM NIS-2 SUPPLEMENTAL SHEET

1. Owner: Exelon Nuclear Sheet 2 of 2 pI-*B-0. *
  • 13ov,,.*, Date ,)13 lvL.

Illinois 6,6e,-.0,, Unit o0.

2. Plant Byron Nuclear Power Station Unit 02 4450 N. Greman Church Road Byron, Illinois 61010 99285127-01 P.O. No., WO No., etc.
3. Work Performed by: Exelon Mechanical Maintenance Type Code Symbol Stamp NOT APPLICABLE Name Authorization No. NOT APPLICABLE Expiration Date NOT APPLICABLE 4450 N. German Church Road, Byron, IL Address
4. Identification of System WE - Aux. Building Equipment Drains 5a. Applicable Construction Code SECTION II 19 74 Edition s75 Addenda Code Cases N/A -7, i L417q-I 5.b Applicable Edition of Section XI utilized for Repairs or Replacement Components. 69 19 89 Edition NO Addenda
6. Identification of Components Repaired or Replaced and Replacement Components.

National Repaired. ASME Name of Manufacturer Board Other Year Replaced, Code. Stanped I Name of Serial No No Identification Built or Replacement (Yes or No) Component Manufacturer Ht 4AW6Z N/A 2, U1, ,iI, 1983 Replaced No 01 Elbow, 3", sch.40 Hunter Corp. Exelon H J 194A N/A aWL RIA6 2002 Replacement No Elbow, 3", schA0 (Final)

ER-AA-330-009 DOCUMENT# 12, REV. 0 Revision 0 Page 29 of 36 ATTACHMENT 4 , FORM NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section XI Page 1 of 4

1. OwnerExelon Nuclear Date 09/25/02 Name 4300 Winfield Road, Warrenville, II. Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron P.O. 00038307 release 20 Address Repair Organization P.O., Job No., etc
3. Work Performed by VR TESCO, INC. Type Code Symbol Stamp Not pplicable Authorization No. Not Applicable 1050 Kinqsland Dr. Batavia IL 60510 ExpirationDate Not Applicable Address
4. Identification of System spare valves (XX) 5 (a) Applicable Construction Code ASME SECTION III 1974 Edition, S75 Addenda, NO Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacements 1989 (c) Section XI code Cases used, NONE
6. Identification of Components Repaired or Replaced and Replacement Components ASME Nameof National Repaired, Code Name of Manufacturer Manufacturer Other Year Replaced, or Stamped Component Serial No. Board Identification Built Replacement (Yes or No. No)

Valve, Jamesbury KKI-001 N/A spare 2002 Repaired Yes Butterfly, 36" Valve, Jamesbury KKI-002 N/A spare 2002 Repaired Yes Butterfly, 36"

7. Description of Work Valve protrusion removed from valve body per EC 338729, Rev. I
8. Tests Conducted: Hydrostatic El Pneumatic [I Nominal Operating Pressure 51 IN/A Other [5 Pressure - psi Test Temp. - OF
  • NOTE: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 V2 in. x II in., (2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

A

ER-AA-330-009 Revision 0 Page 30 of 36 ATTACHMENT 4 FORM1 NIS-2 OWNER'S REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section XI Page 2 of 4

9. Remarks Work Order 97088356-34. Work performed by VR TESCO per a NPS&W Venture work order.

Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and rep.air conform to the Repair or replacement rules of the ASME Code, Section XI. Type Code Symbol Stamp // Certificate of Authorization No. 1-/1 Signed -,A a - Date 40,2 20 0o . 

                !        or Owner's Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Insp          r, aaat          State of Province of'____ and employed by                "

of_____ have inspected the components described in this Owner's Report during the period )_-to/.ýý*And state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section XI. By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind ari~ing from or connected with this inspection. ___*,__,._-_*,"_ Commissions _ /Z__- z____ IInspector's Signature National Board, State, Province, and Endorsements Date &_.1X20 0Z}}

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