Text

Post-Outage 90-Day Inservice Inspection (ISI) Summary Report
	ML12158A446
Person / Time
Site:	LaSalle
Issue date:	06/05/2012
From:	Rhoades D; Exelon Generation Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	RA12-018
	Download: ML12158A446 (95)
	v • d • e

LaSalle County Station www.exeloncorp.com 2601 Na t 21st Road Marseilles, IL. 61341-9757 10 CFR 50.55a(g)

RA12-018 June 5, 2012 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 LaSalle County Station, Unit 1 Facility Operating License No. NPF-1 1 NRC Docket No. 50-373

Subject:

Post-Outage 90-Day Inservice Inspection (IS1) Summary Report

Reference:

Milton H. Richter (ComEd) letter to Dr. Thomas E. Murley (NRC),

"Structural Margin Evaluation for Reactor Pressure Vessel Head Studs,"

dated October 3, 1991 Susan R. Landahl (Exelon) letter RA06-062 to the Nuclear Regulatory Commission, "In Service Inspection (ISI) Intervals," dated September 22, 2006 Letter from Christopher Gratton, Sr., U.S. Nuclear Regulatory Commission to Michael Pacilio, Exelon Nuclear, "LaSalle County Station Units 1 and 2 - Issuance of Amendments Re: Measurement Uncertainty Recapture Power Uprate," dated September 16, 2010 Enclosed is the Exelon Generation Company, LLC (EGC) LaSalle County Station Unit 1 Post-Outage 90-Day (ISI) Summary Report, submitted in accordance with 10 CFR 50.55a, "Codes and Standards," and the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code Section XI, Article IWA-6200, Paragraph IWA-6230.

The enclosed Post-Outage 90-Day ISI Summary Report is for examinations, repair/replacement activities, and Containment Inservice Inspection (CISI) performed between the end of LaSalle County Station Unit 1 thirteenth refueling outage on March 6, 2010, through the end of the fourteenth refueling outage. This refueling outage started on February 13, 2012, and ended on March 7, 2012. This refueling outage was the first outage scheduled for the Second Inspection Period of the Third Inservice Inspection Interval, and the Second Containment Inservice Inspection Interval, effective from October 1, 2010, through September 30, 2014, for LaSalle County Station Unit 1.

June 5, 2012 U.S. Nuclear Regulatory Commission Page 2 LaSalle County Station Unit 1 is owned and operated by EGC, whose address is:

200 Exelon Way Kennett Square, PA 19348 The referenced license amendment regarding Measurement Uncertainty Recapture (MUR) Power Uprate (PU) raised the licensed rated thermal power from 3489 MWt to 3546 MWt.

To the best of our knowledge and belief, the statements made in this report are correct, and the examinations and corrective measures, as applicable, conform to the rules of the ASME Boiler and Pressure Vessel Code,Section XI.

Should you have any questions concerning this letter, please contact Mr. Terrence Simpkin, Regulatory Assurance Manager, at (815) 415-2800.

Respectfully, David P. Rhoades Site Vice President LaSalle County Station Attachment cc: NRC Senior Resident Inspector - LaSalle County Station

Attachment Post-Outage 90-Day ISI Summary Report

1. INTRODUCTION The Inservice Inspection (ISI) Summary Report addresses examinations, repair/replacement activities, and Containment Inservice Inspections (CISI) performed between the end of the previous refuel outage, (L1 R13) March 6, 2010, through the end of the current refuel outage (L1 R14). This refuel outage was the fourteenth for LaSalle County Station Unit 1. It started February 13, 2012 and ended March 7, 2012. This refueling outage was the first outage scheduled for the Second Inspection Period of the Third Inservice Inspection Interval, and the Second Containment Inservice Inspection Interval, effective from October 1, 2010, through September 30, 2014, for LaSalle County Station Unit 1. The Third Inservice Inspection Interval, and the Second Containment Inservice Inspection Interval are divided into three successive inspection periods as determined by calendar years of plant service within the inspection interval.

Identified below are the period dates for the inspection intervals as defined by Inspection Program B. In accordance with IWA-2430 (d)(3), the Inspection Periods specified below may be decreased or extended by as much as one year to enable inspections to coincide with LaSalle County Station's refuel outages.

Unit 1, Period 1 (October 1, 2007 through September 30, 2010)

Unit 1, Period 2 (October 1, 2010 through September 30, 2014)

Unit 1, Period 3 (October 1, 2014 through September 30, 2017)

Augmented Inservice Inspection (AISI) examinations, ISI and CISI, and Preservice Inspections (PSI) were completed prior to and during the refuel outage as required by the Code of Federal Regulations, Technical Requirements Manual, ASME Boiler and Pressure Vessel Code,Section XI, 2001 Edition through the 2003 Addenda, and the applicable requirements of the Performance Demonstration Initiative (PDI).

Personnel from General Electric Hitachi Nuclear Inspection Services and Exelon Nondestructive Examination Services (NDES) performed the Non-Destructive Examinations (NDE), Magnetic Particle (MT), Liquid Dye Penetrant (PT), and manual and/or automated Ultrasonic (UT) techniques that were used during these inspections.

All Intergranular Stress Corrosion Cracking (IGSCC) examinations were completed by personnel qualified for the detection and discrimination of IGSCC Cracking in accordance with the PDI. NDES provided necessary resolution of technical problems, reviewed all ISI personnel qualifications, and all visual, surface, and volumetric examination results.

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Visual examinations of reactor vessel internals, component supports, and piping pressure tests were performed by General Electric Hitachi Nuclear Inspection Services personnel, Exelon Generation Company, LLC (EGC) employees of the LaSalle County Station Programs Engineering Group and NDES personnel. These individuals were appropriately certified as ASME Code Section XI Visual Examiners in accordance with EGC's written practice. An underwater camera was used for the visual inspection of the reactor vessel internals. The camera was proven capable of resolving 0.001" and 0.0005" stainless steel wires and .044" characters while underwater and, in the same lighting conditions found during the actual inspection.

The services of an Authorized Nuclear Inservice Concrete Inspector (ANIC) were provided by Hartford Steam Boiler Inspection & Insurance Co. of Connecticut, 2443 Warrenville Road, Suite 500, Lisle, IL 60532.

Mr. Adam M. Prine, ANII, State of Illinois #2146 IC, and Mr. Mike Haydon, ANII, State of Illinois #1721 reviewed written Nondestructive Examination procedures, personnel qualifications, instrument certifications, material certifications and ASME Code Section XI examination results. Mr. Prine and Mr. Haydon also certified Owner's Reports of Repair or Replacement (Form NIS-2). The Owner's Data Report for Inservice Inspection (Form NIS-1) was certified by Mr. Prine.

H. SCOPE OF INSPECTIONS The ISI Summary Report is provided with tables that consolidate the extent and results of inspections performed between the end of the previous refuel outage (L1 R13), March 6, 2010 through the end of the refuel outage (L1 R14). An explanation of all abbreviations used is in Attachment 3 of the Summary Report.

Table A provides a listing of all completed ASME Code Section XI examinations for this refuel outage with the exception of component support examinations and pressure testing, which are addressed separately. Table A is divided by ASME Code Category with a description of the items examined, including the examination types, the examination results and where applicable, the percentage of examinations completed.

Table B provides a listing of all AISI. These are not ASME Code Section XI requirements, but are additional examination area requirements, increased frequency requirements, or combinations of these requirements, which are requested by the Nuclear Regulatory Commission (NRC). These other requirements have been deemed prudent in view of EGC and industry experience. Table B also gives a description of the items examined as well as the examination types, and examination results. Table B includes the following categories:

BWRVIP These examinations are of austenitic stainless steel piping and other susceptible materials for the detection of IGSCC.

REACTOR VESSEL INTERNALS AISI - These examinations include inspection of reactor internal components required by the NRC such as core spray spargers and piping. These have been adopted by EGC through its commitment to the Boiling Water Reactor Vessel and Internals Project (BWRVIP). Other examinations, such as the steam separator, were deemed prudent based on industry experience.

MISCELLANEOUS AISI - Pursuant to LaSalle County Station's commitment to the NRC (reference letter), the AISI examinations included an augmented "End-Shot" UT examination of 100% (68 total) of the reactor pressure vessel closure studs. The "End Shot" UT examination was completed using procedures, calibration standards, and 2

personnel that met all applicable requirements of the ASME Code,Section XI, 2001 Edition through the 2003 Addenda, and the PDI.

Table C provides a listing of all completed ASME Code Section XI Class 1 and 2 component support examinations and Snubber Functional Tests for this outage. Table C gives the support number, examination type, and examination and test results. ASME Code Class divides Table C.

Table D provides a listing of pressure testing of ASME Code Section XI Class 1 and 2 piping and components completed during the period between the L1 R13 and L1 R14 refuel outages. ASME Code Class 1 components and piping were examined using the VT-2 method during the system leakage test conducted at 1032 psig prior to reactor start-up, which is within the nominal operating pressure range of the reactor pressure vessel associated with 100% rated reactor power. Pressure testing will be ongoing throughout the remainder of the Second Inspection Period.

Table E is a listing of ASME Code Section XI Class 1 and 2 repair/replacements completed since the previous refuel outage and those completed during the fourteenth refuel outage of Unit 1, which are in accordance with ASME Code Section XI, Article IWA-4000. These include the work order number that served to implement the applicable activity and a short description. The documentation packages are on file at LaSalle County Station. Each activity has been certified on the Owner's Report of Repair or Replacement, which will serve as documentation of these repair/replacements.

The name of each major component or appurtenance inspected during the fourteenth refuel outage is listed in column # 1 on Form NIS-1 (Attachment 1). This includes the reactor pressure vessel and the Class 1 piping system. A detailed list of components or appurtenances inspected appears in the abstracts listed as items 13, 14, and 15 on Form NIS-1. The descriptions including size, capacity, material, location, and drawings to aid in identification of the components or appurtenances have been previously submitted, including the N-5 ASME Code Data Reports. This information was not included in the ISI Summary Report. These documents are on file at LaSalle County Station. This also applies to the PSI and ISI Summary Reports.

III.

SUMMARY

OF RESULTS AND CORRECTIVE ACTIONS The ASME Code Section XI ISI results obtained during this refuel outage were compared with the Preservice and Inservice results. The following is a summary of the results and corrective actions taken:

ASME Code

1.Section XI Components Recordable indications were detected in ASME Code Section XI components and other non-code components, during augmented examinations. These indications are further discussed below or in the applicable tables. All indications detected in ASME Code Section XI components were evaluated against the applicable acceptance standards.

Steam 2. Dryer An augmented visual examination of the steam dryer is completed during each refuel outage. The steam dryer contains indications that were recorded during previous examinations. Areas where historical indications were identified include the lifting eye bracket welds, upper dryer bank vertical welds, upper support ring, tie rods, and dryer bank panels. Specific inspections as recommended by BWRVIP-139-A were performed and new indications were identified.

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Previously identified indications at the third bracket on the lifting assembly at 315° were examined. Issue Report #1328583 was generated to document the condition of the bracket.

Previously identified indications at the fourth bracket on the lifting assembly at 315° were examined. Issue Report #1328620 was generated to document the condition of the bracket.

Previously identified crack-like indications were noted running the length of the dryer end panel between two tie rods on the panel. Issue Report #1328672 was generated to document the condition of the tie rods.

Previously identified indications were noted in the HAZ of vertical V01-270. Issue Report

1328674 was generated to document the condition of the weld.

As noted in previous outages, tie Rod 16-90 protrudes from the end of the top of the bank, and has broken tack welds. Issue Report #1328671 was generated to document the condition of the tie rod.

Previously identified indications were noted at the bottom end of Bank C hood vertical welds V04a-90 and V04c-90. Issue Reports #1328660 and #1328625 were generated to document the condition of the hood.

Previously identified indications noted on the upper support ring at various locations around the circumference of the ring. Issue Reports #1328846, #1329171, and

1331754 were generated to document the condition of the upper support ring.

The above noted indications were evaluated as acceptable as-is with no repair required in accordance with EC#387449.

These examination results have been documented on the General Electric Hitachi Nuclear Inspection Services examination data sheets.

3. Steam Separator An augmented visual examination of a portion of the steam separator is completed each refuel outage.

During previous outages, indications were identified on mid-support ring gussets. These gussets were reviewed in L1 R14 and there were no notable changes in the indications.

Issue Reports #1331136, #1331139, #1331445, #1331339, #1331353, #1331356,

1331357, and #1331450 were generated to document the condition of the gussets.

During visual examination of the steam separator lifting lug at 71 degrees in the last outage (L1 R13), the Outer Stand Pipe at approximately 70° had a small dent on the upper edge adjacent to the steam separator lifting lug. The indication was examined in L1 R14 and Issue Report #1331145 was generated to document the condition of the standpipe.

The shroud head bolt indexing window and pin locators were examined and minor wear was noted on the windows and/or pins. Issue Report #1331730 was generated to document the condition of the windows and pins.

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The above noted indications were evaluated as acceptable as-is with no repair required in accordance with EC#387449.

These examination results have been documented on the General Electric Hitachi Nuclear Inspection Services examination data sheets.

Jet Pumps 4.

Eight Jet Pump Auxiliary Wedges were examined in response to industry Operating Experience and new minor wear was identified on the auxiliary wedges on the vessel side of Jet Pumps 5 and 6 and on the shroud side of Jet Pump 6. Issue Reports

1332322, #1332325, and #1332326 were generated to document the condition of the Jet Pump Auxiliary Wedges.

Indications were noted on fifteen of the twenty main jet pump wedges examined. The wedges were examined in response to industry Operating Experience. New wear was identified on Jet Pump 12, and the wear noted on the other wedges was unchanged from the wear observed in previous outages. Issue Reports #1328664, #1328663,

1328658,#1333250,#1328666,#1328676,#1328634,#1328661,#1328659,

1328657, #1328624, #1328665, #1328662, #1328668, and #1328670 were generated to document the condition of the Jet Pump main wedges.

Existing cracks at the RS-9 location on jet pump risers 5/6 and 9/10 were examined, and there was no change in the condition of the cracks. Issue Reports #1332124 and

1331716 were generated to document the condition of the welds on risers 5/6 and 9/10.

The remaining eight RS-9 locations were examined, and new cracks were identified at the RS-9 location on jet pump risers 1/2, 3/4, and 11/12. The cracks were evaluated as acceptable as-is with no repair required in accordance with EC#388019. Issue Reports

1331470, #1331484, and #1331601 were generated to document the condition of the welds on risers 1/2, 3/4, and 11/12.

Twenty Jet Pump Slip Joint Clamps were examined in response to industry Operating Experience and vendor recommendations, and new minor wear was identified on the Clamps installed on Jet Pumps 7, 14, and 19. Issue Reports #1333246, #1331708, and

1331705 were generated to document the condition of the Slip Joint Clamps.

The above noted indications were evaluated as acceptable as-is with no repair required in accordance with EC#387449.

Eighteen RB-1 welds, 3 RS-1 welds, 3 RS-8 welds, 1 RS-6 weld, 1 RS-7 weld, 2 WD-2a welds, and 2WD-2b welds were examined and no indications were identified.

Three jet pump diffuser welds DF-1, DF-2, and DF-3 were ultrasonically examined on all twenty jet pumps and no relevant indications were noted.

These examination results have been documented in the General Electric Hitachi Nuclear Inspection Services examination data sheets and ultrasonic report.

Core Spray

5. Piping Ultrasonic examination of core spray piping weld BP4a was performed and the existing indication on weld BP4a was re-sized with no significant change in length and the flaw size was evaluated as acceptable as-is for two cycles with no repair required in accordance with calculation L-003008. Issue Report #1358865 was generated to document the results of the ultrasonic examination.

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Visual examinations of the remaining core spray piping and selected sparger welds were performed and no indications were identified. Eight core spray sparger bracket welds were examined and no new indications were identified. The existing movement noted on core spray sparger bracket at 45° is unchanged from L1 R12. Issue Report #1331822 was generated to document the condition of the sparger bracket. The indication was evaluated as acceptable as-is in accordance with EC#387449.

These examination results have been documented in the General Electric Hitachi Nuclear Inspection Services examination data sheets and ultrasonic report.

6. Core Support Structure Both of the Access Hole Covers in the shroud support plate, two of the shroud support plate gussets, and the accessible areas of the shroud support plate were all examined with no indications identified.

Ultrasonic examination of 100% of shroud support plate to reactor weld H9 was completed from the outside of the reactor with no indications identified.

All accessible areas of core shroud welds H3, H6, and H8 were ultrasonically examined, and portions of welds H2 and H5 were ultrasonically examined due to tooling availability.

Details are contained in the table below.

% of examined % of Shroud weld examined Weld length weld Re-ID flawed

length inspection not not H2 examined examined Not required 0.00 80.40 0.00 80.40 10 years H3 1.40 85.90 2022 0.00 22.10 H5 2016 0.90 23.00 0.00 85.70 10 years H6 0.50 86.30 2022 0.00 60.30 10 years H8 0.40 60.70 2022

top value in each box reflects the top side of the weld, bottom value reflects the bottom side of the weld The indications were evaluated as acceptable as-is in accordance with calculation L-003216 and EC#388089. Issue Report #1358938 was generated to document the condition of the core shroud horizontal welds.

These examination results have been documented on the General Electric Hitachi Nuclear Inspection Services examination data sheets and ultrasonic reports.

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7. Attachment Welds Minor wear observed on the top of the steam dryer support lug at 185° was identified previously and inspection in this outage observed that the wear was consistent with the previous results, including the existence of a piece of rolled metal on the top corner side furthest from the 180° guide rod. The rolled metal has been evaluated for its potential impact to become a lost part and concluded that the piece was acceptable as-is with no repair required in accordance with EC #387449. Issue Report #1331736 was generated to document the condition of the support lug.

These examination results have been documented on the General Electric Hitachi Nuclear Inspection Services examination data sheets.

Top Guide 8.

The top guide C-clamp at 270° and ten top guide grid beam cells were examined and no indications were identified.

During the examination of two of the grid beam cells, small pieces of material were noted extending down from the bottom edge of the top guide beams. The indications were evaluated as acceptable as-is in accordance with EC#387955. Issue Report #1331240 was generated to document the condition of the grid beam cells.

These examination results have been documented on the General Electric Hitachi Nuclear Inspection Services examination data sheets.

9.

Feedwater Spargers During the last outage, minor wear was observed on the feedwater sparger end bracket top surfaces and the bolt heads at the 5° bracket, the 235° bracket, and the 245° bracket. In the current outage, all twelve of the bracket locations were examined, and there was no change in the wear noted in the previous inspections, and new wear was noted at the 116° bracket. Issue Report #1331746 was generated to document the condition of the brackets, and the noted indications were evaluated as acceptable as-is with no repair required in accordance with EC # 387449.

Low Pressure

10. Coolant Injection The Low Pressure Coolant Injection coupling at 450 was examined with no indications identified.

These examination results have been documented on the General Electric Hitachi Nuclear Inspection Services examination data sheets.

Lower 11. Plenum The reactor pressure vessel bottom head drain area was inspected for the presence of foreign material, and fuel cells 30-27 and 26-31 were vacated to support the inspection.

Visual examination of the accessible welds in the lower plenum was performed. Four In-Core Monitor Housing to Reactor Pressure Vessel welds, four In-Core Monitor Housing to In-Core Housing Guide Tube welds, four In-Core Housing Support Hardware to In-Core Housing Guide Tube Tack Welds, four In-Core Housing Support Hardware Tack welds, eight Stub Tube to Control Rod Drive Housing welds, eight Control Rod Drive Housing to Cap welds, and eight Stub Tube to Reactor Vessel welds were examined with no indications. The minor foreign material noted was removed.

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12. ASME Code Section XI Piping & Component Support Examinations Piping and component supports were inspected (51 total) during this refuel outage as part of the original scope of the ISI examinations. These were distributed between ASME Code Section XI Class 1 and 2/D+ supports as follows:

ASME Code Class 1 - 30 supports.

ASME Code Class 2/D+ - 21 supports.

Conditions unacceptable for return to service (loose bolting) were detected during the original examinations and additional examinations were completed in accordance with the requirements of IWF-24309a), (b) (c) and (d). All unacceptable conditions were corrected and the affected supports were returned to service.

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LASALLE COUNTY STATION UNIT 1 FOURTEENTH REFUEL OUTAGE ASME CODE SECTION XI

SUMMARY

REPORT

TABLE OF CONTENTS

1. INTRODUCTION H. SCOPE OF INSPECTIONS Table A - ASME Code Section XI Examinations Table B - Augmented Inservice Inspections AISI Table C - ASME Code Section XI Component Support Examinations Table D - ASME Code Section XI Pressure Testing Table E - Class 1 & 2 Repair/Replacements

SUMMARY

OF RESULTS, EVALUATIONS, AND CORRECTIVE ACTIONS IV. ATTACHMENTS

1. NIS-1 Form

2. NIS-2 Forms

3. Abbreviations

TABLE A ASME CODE SECTION XI ISI INSPECTIONS ITEM # ITEM DESCRIPTION EXAM TYPE RESULT ASME CATEGORY B-D 66% COMPLETE LCS-1-N4A UT RI; ACCEPTABLE PER IWB-3510-1 LCS-1-N4B UT NRI LCS-1-N4C UT RI, ACCEPTABLE PER IWB-3510-1 LCS-1-N4D UT RI; ACCEPTABLE PER IWB-3510-1 LCS-1-N4E UT RI; ACCEPTABLE PER IWB-3510-1 LCS-1-N4F UT RI; ACCEPTABLE PER IWB-3510-1 1-NIR-4A UT NRI 1-NIR-4B UT NRI 1-NIR-4C UT NRI 1-NIR-4D UT NRI 1-NIR-4E UT NRI 1-NIR-4F UT NRI ASME CATEGORY B-G-1 ITEM # ITEM DESCRIPTION EXAM TYPE RESULT

1. 1-B33-FO60A-3 UT NRI

2. 1-B33-FO60A-4 UT NRI

3. 1-STUD-23-46 UT NRI

4. 1-FLANGE-23-46 UT NRI

5. 1-NUT-23-46 VT-1 NRI

6. 1-WASHER-23-46 VT-1 NRI ASME CATEGORY B-G-2 ITEM # ITEM DESCRIPTION EXAM TYPE RESULT MS-1001B-20

1. VT-1 NRI MS-1002B-27

2. VT-1 NRI

TABLE A (CONT'D.)

ASME CATEGORY B-K 46% COMPLETE ITEM # ITEM DESCRIPTION EXAM TYPE RESULT

1. 1B33-0001A PT NRI

2. FW02-1071 S MT NRI

3. FW02-1055S MT NRI

4. R124-1131X MT NRI ASME CATEGORY B-M ITEM # ITEM DESCRIPTION EXAM TYPE RESULT

1. 1 B21-F032A VT-3 NRI

2. 1 E51-F066 VT-3 NRI ASME CATEGORY C-A 60% COMPLETE ITEM # ITEM DESCRIPTION EXAM TYPE RESULT

1. IRH-HX 1 B-03 UT NRI

2. IRH-HX 1 B-04 UT NRI ASME CATEGORY C-B 75% COMPLETE ITEM # ITEM DESCRIPTION EXAM TYPE RESULT

1. IRH-HX1B-07 NOZ-SHELL UT & MT NRI

2. IRH-HX1B-07 INNER RAD UT NRI ASME CATEGORY C-C 55% COMPLETE ITEM # ITEM DESCRIPTION EXAM TYPE RESULT

1. IRH-HX 1 B-08B MT NRI

2. IRH-HX 1 B-09B MT NRI

3. IRH-HX 1 B-10B MT NRI

4. HP02-1018X MT NRI

5. HP02-1019S MT NRI

6. HP 14-1004X MT NRI

7. RH02-1002V MT NRI ASME CATEGORY R-A 32% COMPLETE ITEM # ITEM DESCRIPTION EXAM TYPE RESULT

1. FW-1001-10 UT NRI

2. FW-1001-13 UT NRI

3. FW-1001-16 UT NRI

4. FW-1001-71B UT NRI

5. FW-1001-81B UT NRI

6. FW-1002-10 UT NRI

TABLE A (CONT'D.)

ASME CATEGORY R-A ITEM # ITEM DESCRIPTION EXAM TYPE RESULT

7. FW-1002-15 UT NRI

8. FW-1002-53B UT NRI

9. FW-1002-63B UT NRI

10. RH-1005-02 UT NRI

TABLE B AUGMENTED ISI INSPECTIONS AISI CATEGORY BWRVIP-75 IGSCC ITEM # ITEM DESCRIPTION EXAM TYPE RESULT RR-1001-01 UT NRI RR-1001-02 UT NRI RR-1001-05 UT NRI RR-1001-06 UT NRI RR-1001-10 UT NRI RR-1001-18 UT NRI RR-1007-16 UT NRI RR-1007-17 UT NRI RR-1007-18 UT NRI AISI CATEGORY VESSEL INTERNALS

1. STEAM DRYER VT-1 RI, SEE REPORT PAGE 3, BWRVIP-139

2. STEAM SEPARATOR VT-1/VT-3 RI, SEE REPORT PAGE 4

3. CORE SPRAY PIPING UT/EVT-1 RI, BWRVIP-18 SEE REPORT PAGE 5

4. CORE SPRAY SPARGERS VT-1 NRI, BWRVIP-18

5. CORE SPRAY SPARGER BRACKETS VT-1 NRI, BWRVIP-18

6. JET PUMP ASSY. UT/ EVT-1/VT-1/VT- 3 RI, SEE REPORT PAGE 5, BWRVIP-41

7. TOP GUIDE CLAMP VT-3 NRI, BWRVIP-26

8. TOP GUIDE GRID BEAMS EVT-1 RI, BWRVIP-183, SEE REPORT PAGE 7

9. SURVEILLANCE CAPSULE VT-3 NRI, BWRVIP-86

10. DRYER SUPPORT LUG EVT-1 WEAR, SEE REPORT PAGE 6, BWRVIP-48

11. FEEDWATER SPARGER VT-1/VT-3 WEAR, SEE REPORT PAGE 7 BRACKETS

12. SHROUD UT RI; BWRVIP-76, SEE REPORT PAGE 6

13. SHROUD SUPPORT PLATE UT NRI; BWRVIP-38 TO RPV WELD

14. LPCI COUPLING EVT-1/VT-1/VT-3 NRI; BWRVIP-42

15. ACCESS HOLE COVERS EVT-1 NRI, BWRVIP-180

16. INSTRUMENT HOUSINGS VT-3 NRI

17. CRD STUB TUBES VT-3 NRI AISI CATEGORY MISC.

ITEM # ITEM DESCRIPTION EXAM TYPE RESULT

1. RPV STUDS (1-68) UT NRI, SEE REPORT PAGE 2

TABLE C ASME CODE SECTION XI COMPONENT & SUPPORT EXAMINATIONS CATEGORY F-A 26% COMPLETE ASME CLASS 1 ITEM # ITEM DESCRIPTION EXAM TYPE RESULTS FW02-1003C VT-3 NRI FW02-1011C VT-3 NRI FW02-1055S VT-3 RI, LOOSE BOLTING CORRECTED FW02-1071 S VT-3 NRI FW02-1153S FT PASS FW02-1157X VT-3 NRI FW02-1180X VT-3 NRI FW02-1182X VT-3 NRI HP02-1024X VT-3 NRI MS00-1006S FT PASS MSOO-1042S FT PASS MSOO-1045S FT PASS MSOO-1048V VT-3 NRI MSOO-1052S FT PASS MSOO-1055S FT PASS MSO1-1004V VT-3 NRI MS06-1006S FT PASS MS 14-1030X VT-3 NRI MS 14-1031 S FT PASS MS 14-1032X VT-3 NRI MS 14-1043R VT-3 RI, LOOSE BOLTING CORRECTED NB13-1003C VT-3 NRI RH03-1002V VT-3 NRI RH03-1544X VT-3 NRI RH04-1503 S FT PASS RH40-1003C VT-3 NRI RH40-1004C VT-3 NRI RH40-1007C VT-3 NRI RI01-1011S FT PASS R124-1002V VT-3 NRI R124-1016X VT-3 NRI R124-1037X VT-3 NRI 8124-112251 FT PASS RI24-112252 FT PASS R124-1130X VT-3 NRI RI24-1131X VT-3 NRI RROO-1001S FT PASS RROO-1013S VT-3 NRI RROO-1014S VT-3 NRI RROO-1033V VT-3 NRI RROO-1061X VT-3 RI, LOOSE BOLTING CORRECTED RROO-1072X VT-3 NRI RR00-1073X VT-3 NRI RR17-1008S FT PASS ASME CLASS 2 ITEM# ITEM DESCRIPTION EXAM TYPE RESULTS 1E12-BOO1B

1. VT-3 NRI

2. FW02-1141X VT-3 NRI

3. HG05-1024X VT-3 NRI

4. HG05-1031 V VT-3 NRI

TABLE C (CONT'D.)

ASME CLASS 2 ITEM# ITEM DESCRIPTION EXAM TYPE RESULTS HG06-1089X VT-3 NRI HP02-1013X VT-3 NRI HP02-1019S VT-3/FT NR IPASS HP 14-1004X VT-3 NRI HP 14-1010X VT-3 NRI LP02-1026G VT-3 NRI LP02-1052X VT-3 NRI MSO1-1021 C VT-3 NRI MS38-1008V VT-3 NRI RHO 1-1013 S FT PASS RHO1-1024V VT-3 NRI RH02-1002V VT-3 NRI RH02-1005V VT-3 NRI RH02-1006V VT-3 NRI RH02-1050X VT-3 NRI RH02-1063S FT PASS RH02-1064S FT PASS RH03-1034X VT-3 NRI RH03-1035S FT PASS RH03-1526X VT-3 NRI RH04-1027S FT PASS RH04-1028S FT PASS RH23-1046S FT PASS RH59-1030S FT PASS RH88-H02S FT PASS RHR PUMP lA VT-3 NRI RR69-H04S FT PASS

TABLE D ASME CODE SECTION XI PRESSURE TESTING ITEM # ITEM DESCRIPTION EXAM TYPE RESULT

1. 1-CM-07 VT-2 NRI

2. 1-CM-14 VT-2 NRI

3. 1-ES-01 VT-2 NRI

4. 1-FW-01 VT-2 NRI

5. 1-HG-02 VT-2 NRI

6. 1-HG-03 VT-2 NRI

7. 1-HG-04 VT-2 NRI

8. 1-HG-05 VT-2 NRI 9 1-IN-01 VT-2 NRI

10. 1-IN-02 VT-2 NRI

11. 1-IN-03 VT-2 NRI

12. 1-IN-04 VT-2 NRI

13. 1-IN-05 VT-2 NRI

14. 1-IN-06 VT-2 NRI

15. 1-IN-07 VT-2 NRI

16. 1-IN-08 VT-2 NRI

17. 1-IN-09 VT-2 NRI

18. 1-IN-10 VT-2 NRI

19. 1-IN-11 VT-2 NRI

20. 1-IN-12 VT-2 NRI

21. 1-IN-13 VT-2 NRI

22. 1-IN-14 VT-2 NRI

23. 1-IN-15 VT-2 NRI

24. 1-IN-16 VT-2 NRI

25. 1-IN-17 VT-2 NRI

26. 1-MC-01 VT-2 NRI

27. 1-MS-01 VT-2 NRI

28. 1-NB-02 VT-2 NRI

29. 1-NB-03 VT-2 NRI

30. 1-NB-04 VT-2 NRI

31. 1-NB-05 VT-2 NRI

32. 1-RCPB VT-2 NRI

33. 1-RE-O1 VT-2 NRI

34. 1-RF-01 VT-2 NRI

35. 1-RH-01 Extended Boundary VT-2 NRI

36. 1-RH-02 Extended Boundary VT-2 NRI

37. 1-RH-03 VT-2 NRI

38. 1 -RH-03 Extended Boundary VT-2 NRI

39. 1-RR-03 VT-2 NRI

40. 1-RR-07 VT-2 NRI

41. 1-VG-01 VT-2 NRI

TABLE E REPAIR/REPLACEMENT ACTIVITIES CLASS-1 WORK PACKAGE # DESCRIPTION 1173225

1. Replace Control Rod Drive & Cap Screws

2. 1197362 Replace MS SRV "M"

3. 1197363 Replace MS SRV "S"

4. 1197364 Replace MS SRV "P"

5. 1197365 Replace MS SRV "D"

6. 1197366 Replace MS SRV "V"

7. 1197367 Replace MS SRV "K"

8. 1197368 Replace MS SRV "F"

9. 1313304 Repair Valve Disc

10. 1221297 Replace Control Rod Drive & Cap Screws

11. 1318402 Replace Snubber RR17-1008S

12. 1341412 Replace Explosive Valve after Firing

13. 1363966 Replace MS SRV "E"

14. 1372534 Replace Control Rod Drive & Cap Screws

15. 1424281 Replace Control Rod Drive & Cap Screws

16. 1424283 Replace Control Rod Drive & Cap Screws

17. 1425580 Replace Snubber MS 14-1031 S

18. 1425582 Replace Snubber R124-1122S

19. 1434603 Replace Control Rod Drive & Cap Screws

20. 1434604 Replace Control Rod Drive & Cap Screws

21. 1434614 Replace Control Rod Drive & Cap Screws

22. 1434616 Replace Control Rod Drive & Cap Screws

23. 1434617 Replace Control Rod Drive & Cap Screws

24. 1434618 Replace Control Rod Drive & Cap Screws

25. 1434621 Replace Control Rod Drive & Cap Screws

26. 1434622 Replace Control Rod Drive & Cap Screws

27. 1434623 Replace Control Rod Drive & Cap Screws

28. 1434624 Replace Control Rod Drive & Cap Screws

29. 1434625 Replace Control Rod Drive & Cap Screws

30. 1434627 Replace Control Rod Drive & Cap Screws

31. 1434629 Replace Control Rod Drive & Cap Screws

32. 1458619 Replace Control Rod Drive & Cap Screws

33. 967884 Replace Control Rod Drive & Cap Screws

34. 967886 Replace Control Rod Drive & Cap Screws CLASS-2 WORK PACKAGE # DESCRIPTION

1. 1228683 Replace Piping Tee

2. 1317901 Replace Studs for 1 SF01A

3. 1331419 Replace Studs for 1 SF22A

4. 1331420 Replace Studs for 1HP22A

5. 1331692 Replace Studs for 1SA38A

6. 1335208 Replace Relief Valve 1E12-F036A

7. 1347154 Replace Valve 1E21-F018 & Studs

8. 1425172 Replace Snubber RH04-1027S

9. 1425593 Replace Snubber RH04-1028S

10. 1434595 Replace Water Leg Pump

11. 1492386 Replace Water Leg Pump

12. 1514545 Replace Check Valve Disc

13. 1514546 Replace Check Valve Disc

ATTACHMENT 3 ABBREVIATIONS

ATTACHMENT 3 ABBREVIATIONS AD ADDENDA ANTI AUTHORIZED NUCLEAR INSERVICE INSPECTOR AISI AUGMENTED INSERVICE INSPECTIONS ASSY ASSEMBLY ATT ATTACHMENT ASME AMERICAN SOCIETY OF MECHANICAL ENGINEERS AUTO UT AUTOMATED ULTRASONIC TEST BOM BILL OF MATERIAL BWR BOILING WATER REACTOR BWROG BOILING WATER REACTOR OWNER'S GROUP BWRVIP BOILING WATER REACTOR VESSEL AND INTERNALS PROJECT CHRON TRACKING SYSTEM FOR ENGINEERING EVALUATIONS CID CATALOG IDENTIFICATION CM CONTAINMENT MONITERING CISI CONTAINMENT INSERVICE INSPECTION CR COMPONENT RELIEF REQUEST CRD CONTROL ROD DRIVE EC ENGINEERING CHANGE ED EDITION EGC EXELON GENERATION COMPANY ES EXTRACTION STEAM EVT ENHANCED VISUAL TEST FC FUEL POOL COOLING FT FUNCTIONAL TEST FW FEEDWATER GEH GENERAL ELECTRIC HITACHI HG CONTAINMENT COMBUSTIBLE GAS CONTROL HP HIGH PRESSURE CORE SPRAY HSB-CT HARTFORD STEAM BOILER INSPECTION & INSURANCE CO. OF CONNECTICUT

ATTACHMENT 3 (CONT'D.)

ABBREVIATIONS HT# HEAT if ID/OD INSIDE DIAMETER/OUTSIDE DIAMETER IGSCC INTERGRANULAR STRESS CORROSION CRACKING IL ILLINOIS IN INSTRUMENT NITROGEN IR ISSUE REPORT IRM INTERMEDIATE RANGE MONITOR ISI INSERVICE INSPECTION L1R13 LASALLE UNIT ONE REFUEL OUTAGE THIRTEEN L1R14 LASALLE UNIT ONE REFUEL OUTAGE FOURTEEN LLC LIMITED LIABILITY COMPANY LPRM LOCAL POWER RANGE MONITOR LP LOW PRESSURE CORE SPRAY MIL MILLIMETER MC CLEAN CONDENSATE STORAGE MS MAIN STEAM MSIV MAIN STEAM ISOLATION VALVE MT MAGNETIC PARTICLE TEST MWt MEGAWATT THERMAL N/A NOT APPLICABLE NB NUCLEAR BOILER NDE NON-DESTRUCTIVE EVALUATION NDES NONDESTRUCTIVE EXAMINATION SERVICES NDIT NUCLEAR DESIGN INFORMATION TRANSMITTAL NIR NOZZLE INNER RADIUS NR NUCLEAR INSTRUMENTATION NRC NUCLEAR REGULATORY COMMISSION NRI NON-RECORDABLE/NON-RELEVANT INDICATION

ATTACHMENT 3 (CONT'D.)

ABBREVIATIONS PA PENNSYLVANIA PC PRIMARY CONTAINMENT PCE PART CLASSIFICATION EVALUATION PDI PERFORMANCE DEMONSTRATION INITIATIVE PG PAGE PO PURCHASE ORDER PR PRESSURE TESTING RELIEF REQUEST PSI PRESERVICE INSPECTION PSIG POUNDS PER SQUARE INCH GAGE PT LIQUID PENETRANT TEST PTE PART TECHNICAL EVALUATION PWHT POST WELD HEAT TREATMENT QRI QUALITY RECEIPT INSPECTION RC-PB REACTOR COOLANT PRESSURE BOUNDARY RD ROD DRIVE RE REACTOR BUILDING EQUIPMENT DRAINS RF REACTOR BUILDING FLOOR DRAINS RH RESIDUAL HEAT REMOVAL RI REACTOR CORE ISOLATION COOLING RIN RECEIPT INSPECTION #

RPV REACTOR PRESSURE VESSEL RR REACTOR RECIRCULATION RT REACTOR WATER CLEAN UP SA SERVICE AIR SAR SAFETY ANALYSIS REPORT SC STANDBY LIQUID CONTROL SDC SHUTDOWN COOLING SEAG SITE ENGINEERING ADMIN GROUP SIL SERVICES INFORMATION LETTER

ATTACHMENT 3 (CONT'D.)

ABBREVIATIONS SRM SOURCE RANGE MONITOR SRV SAFETY RELIEF VALVE STM STEAM UT ULTRASONIC TEST VG STANDBY GAS TREATMENT VLV VALVE VP PRIMARY CONTAINMENT CHILLED WATER VQ PRIMARY CONTAINMENT VENT AND PURGE VT VISUAL TEST WO WORK ORDER WR REACTOR BUILDING CLOSED COOLING WATER

ATTACHMENT 1 NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTION

FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As required by the Provisions of the ASME Code Rules

1. Owner Exelon Generation Company (EGC), LLC, 200 Exelon Way, Kennett Square, PA 19348 (Name and Address of Owner)

2. Plant LaSalle County Station, 2601 North 21st Road Marseilles, IL 61341-9757 (Name and Address of Owner)

3. Plant Unit One 4. Owner Certificate of Authorization (if required) N/A

5. Commercial Service Date 01/01/84 6. National Board # for Unit 21086

7. Components Inspected Component or Manufacturer Manufacturer State or National Appurtenance Or Installer or Installer Province No. Board No.

Serial No.

Reactor Pressure Combustion 1 B 13-D003 B-24318 21086 Vessel Engineering Reactor Recirculation General Electric N/A N/A N/A Company Nuclear Boiler & CM B.F. Shaw N/A N/A N/A Systems Residual Heat B.F. Shaw N/A N/A N/A Removal Feedwater & HG B.F. Shaw N/A N/A N/A Systems High Pressure Core B.F. Shaw N/A N/A N/A Spray Low Pressure Core B.F. Shaw N/A N/A N/A Spray Main Steam & GE/B.F. Shaw N/A N/A N/A Extraction Steam RI & RT Systems B.F. Shaw N/A N/A N/A Control Rod Drive & B.F. Shaw N/A N/A N/A IN Systems RE & RF Systems B.F. Shaw N/A N/A N/A Fuel Pool Cooling & B.F. Shaw N/A N/A N/A VP Systems Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8V2 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.

FORM NIS-1 (Back)

8. Examination Dates: 02/13/12 to 03/07/12

9. Inspection Period Identification : 2nd Period - From 10/01/10 to 09/30/2014

10. Inspection Interval Identification : 3d Interval - From 10/01/07 to 09/30/2017

11. Applicable Edition of Section XI 2001 Addenda 2003

12. Date/Revision of Inspection Plan: 06/29/2011 Rev. 2

13. Abstract of Examination and Tests. Include a list of examinations and tests and a statement concerning status of work required for the Inspection Plan. See Summary Report for item 13.

14. Abstract of Results of Examinations and Tests. See Summary Report for item 14.

15. Abstract of Corrective Measures. See Summary Report for item 15.

We certify that a) the statement made in this report are correct, b) the examinations and tests meet Inspection Plan as required by the ASME Code,Section XI, and c) corrective measures taken conform to the ASME Code,Section XI.

Certificate of Authorization No. (if applicable) N/A Expiration Date N/A Date 2012 Signed Exelon Generation Company, LLC By Owner CERTIFICATE OF INSERVICE INSPECTION I, the under signed, 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, Connecticut Have inspected the components described in the Owner's Report during the period 02/13/2012 To 03/07/2012 , 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 Inspection Plan and as required by 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. 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 National Board, State, Province, and Endorsements Date 2012

ATTACHMENT 2 NIS-2 OWNERS REPORT OF REPAIR OR REPLACEMENT

FORM NIS-2 OWNER'S REPORT FOR REPAIR /REPLACEMENT ACTIVITY As Required by the Provisions of ASME Code Section Xl Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way, Kenneth Square. PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N.21*' Rd. Marseilles, 11. 61341 W.O. # 1173225 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect III 19 71 Edition No Addenda, Code Cases 1361-1. & 1361-2 (b) Applicable Edition of Section XI Used for Repair/Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembl y G.E. 9557 N/A 38-03 Removed YES CRD Assembly G.E. UTC# N/A 38-03 2012 Installed YES 2906853 **

(8) CRD Nova N/A 38-03

Removed NO Ca screws (8) CRD Nova UTC# N/A 38-03 2011 Installed NO Ca screws 2894883 **

7. Description of Work Cl ass 1 Replacement. * = Per N-5 Code Data Report on file at LaSalle Cou nty Station

8. Tests Conducted: Hydrostatic 1 1 Pneumatic 1_I Normal Operating Pressure I X 1 Exempt 1_I Other 11 Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD UTC# 2906853 was refurbished with documentation provided under Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN# 9557 under work order # 1173225. *' = Replaceme nt CRD Code of Construction is ASME Section Ill, 1974 Ed. W75 Ad. Code Case 1361-2 Reconciled to the original per PTEs PTE 88-013. PTE 88-396 and M93-0535. Replacement Capscrew Code of Construction is ASME Section Ill, Class 1. 1986 Ed. No Ad. Reconciled to the original Code of Construction Per PTE M91-007-0320-0 1 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requireme nts of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Authorization No. N/A Expiration Date N/A Signed ISI Coordinator Date May 21. 2012 Owner or 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R14 to L1R15 ,

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 requireme nts 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.

J2.- - Commissions NB 13411, ANI IL 2146 IC Inspector's ignature National Board, State, Province, and Endorsements Date / 2012

FORM NIS-2 OWNER'S REPORT FOR REPAIR IREPLACEMENT ACTIVITY As Required by the Provisions of ASME Code Section XI Owne 1. r Exelon Generation Company (EGCI LLC Date 02/29/2012 (Name) 200 Exelon Way, Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21't Rd. Marseilles _11.61341 W.O # 1197362 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System B21 (Main Steam)

5. (a) Applicable Construction Code Sect Ili 19 71 Editlon S72 Addenda, Code Cases None (b) Applicable Edition of Section XI Used for Repair/Replacement Activity-2001 Ed., 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No) 1 B21 -F013M SRV Crosby 63790 N/A UTC# 2775633

Removed WA 0012 1 B21 -F013M SRV Crosby 63790 N/A UTC# 2730692

Installed N/A 0069 Tension Nuts 1- *

N/A *

Removed N/A 3/8 In. 8T Tension Nuts 1- NOVA Lot # N/A UTC 2906906 2008 Installed WA 3/8 In. 87 (qty 12 50352711

7. Description of Work Class 1 Replacement. * = Per N-5 Code Data Report on file at LaSalle County Station

8. Tests Conducted: Hydrostatic I I Pneumatic 11 Normal Operating Pressure I X I Exempt I_I Other I_I Pressure:,, 10 32 psig Test Temp. 168 Deg. F

9. Remarks **

(Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE 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 The Hartford Steam Boiler Insp. & Ins.

Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R14 to L1R15 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.

Commis_sions __ _ NB 13411 ANI IL 2146 Inspector's Signature National Board, State, Province, and Endorsements Date gam..,, Q !K

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

1. Owner Exelon Generation Company (EGC) LLC Date 0212912012 (Name) 200 Exelon Way, Kenneth Square. PA .. 19348 Sheet 1 of 2 Address

2. Plant LaSalie County Nuclear Station Unit 01 Name 2601 N. 21" Rd. Marseilles, Ii. 61341 W.O. # 1197363 Address Repair Organization, P.O. No., Job No., etc.

3. Work Pe rformed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System B21 (Main Steam)

5. (a) Applicable Construction Code Sect III 19 71 Edition S72 Addenda, Code Cases None (b) Applicable Edition of Section XI Used for Repair/Replacement Activity-2001 Ed., 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No) 1 B21 -F013S SRV Crosby 63790 N/A UTC# 2730639

Removed N/A 0104 1B21 -F013S SRV Crosby 63790 N/A UTC# 2730689

Installed N/A 0001 Tension Nuts 1- *

N/A *

Removed N/A 3/8 In. 8T Tension Nuts 1- NOVA Ht # N/A UTC 2904984 2011 Installed N/A 3/8 in. 8T (qty 12) 8094444

/K3216 Studs 1 -3/8" x 9 *

N/A *

Removed N/A (2)

Studs 1 -3/8"x 9 (2) NOVA Ht.# Z855 N/A UTC # 2750945 2006 Installed N/A

7. Description of Work Class 1 Replacement. * = Per N-5 Code Data Report on file at LaSalle County Station

8. Tests Conducted: Hydrostatic i.__i Pneumatic 1-i Normal Operating Pressure I X 1 Exempt i_1 Other I_i Pressure: 1032 _psig Test Temp. 168 Deg. F

9. Remarks (Applicable Manufacturer's Data Report to be Attached)

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE 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 The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1 R14 to L1 R15 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 NB 13411 ANI IL 2146 Inspecto r'Signature National Board, State, Province, and Endorsements Date.. q7^ 2012

FORM NIS-2 SUPPLEMENTAL SHEET

1. Owner: Exelon Generation Company (EGC) LLC Sheet 2 of 2 200 Exelon Way, Kenneth Square, Date 6/1/2012 PA., 19348 Unit

2. Plant: LaSalle County Nuclear Station 2601 N. 21". Rd.

Marseilles, Illinois 61341 W.O.#1197363 P. O. No., WR No., etc.

3. Work Performed by: Mechanical Maint. Type Code Symbol Stamp N/A Name Authorization No. N/A Mechanical Maintenance Expiration Date N/A Address

4. Identification of System B21 (Main Steam) 5a. Applicable Construction Code Sect. Ill Edition Addenda 5b. Applicable Edition of Section Xi utilized 2001 Edition 2003 Addenda

6. Identification of Components Repaired or Replaced and Replacement Components.

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

Hell Coil

N/A *

Replaced N/A Hell Coil (2) Consolidated HT# US-2FB5 N/A UTC# 2854285 2010 Replacement N/A Power Supply I

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/29/2012 (Name) 200 Exelon Way, Kenneth Square, PA., 19348 Sheet 1 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21" Rd. Marseilles, II. 61341 W.O. #1197364 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System B21 (Main Steam)

5. (a) Applicable Construction Code Sect III 19 71 Edition S72 Addenda, Code Cases None (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed.. _2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No 1B21 -F013P SRV Crosby 63790 N/A 1B21 -F013P

Removed YES 0068 1821 -F013P SRV Crosby 63790 N/A UTC# 2710690

Installed YES 0007 Tension Nuts 1- *

WA *

Removed NO 3/8 In. 8T Tension Nuts 1- NOVA Lot # N/A UTC 2904984 2012 Installed NO 3/8 In. 8T (qty 12) 8094444 71

7. Description of Work Class 1 Replacement. * = Per N-5 Code Data Report on file at LaSalle County Station

8. Tests Conducted: Hydrostatic 1_1 Pneumatic I_I Normal Operating Pressure I X I Exempt I_I Other 11 Pressure: 1032 -_psig Test Temp. 168 Deg. T

9. Remarks _ Safety Relief Valve replaced with refurbished spare valve UTC# 2710690 and new inlet nuts.

(Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Authorization No. N/A Expiration Date N/A Signed IS[ Engineer Date June 4 . 2012 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R14 to L1R15 ,

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 c nnected with this inspection.

o

^.^ '^.- Commissions 13411 AN, IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements Date -V14._.._ (Zt 4 2012

FORM NIS-2 OWNER'S REPORT FOR REPAIR /REPLACEMENT ACTIVITY As Required by the Provisions of ASME Code Section XI Owner Exelon Generation Company (EGC) LLC Date 02/29/2012 (Name) 200 Exelon Way. Kenneth Square. PA .. 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit . 01 Name 2601 N. 21" #d. Marseilles-11. 61341 W.O. #1197365 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. identification of System B21 (Main Steam)

5. (a) Applicable Construction Code Sect III 197 ,-_Edition S72 Addenda, Code Cases None (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed Yes or No 1 B21 -F01 3D SRV Crosby 63790 NIA UTC# 2775634

Removed NIA 0063 1B21 -F013D SRV Crosby 63790 WA UTC# 2730693

Installed WA 0073 Tension Nuts 1- *

WA *

Removed N/A 3/8 In. 8T Tension Nuts 1- NOVA Ht # WA UTC 2904984 2011 Installed N/A 3/8 In. 8T (qty 12) 8094444/

K3216

7. Description of Work Class 1 Replacement. * = Per N-5 Code Data Report on file at LaSalle County Station

8. Tests Conducted: Hydrostatic I1 Pneumatic I_1 Normal Operating Pressure I X I Exempt I_1 Other 1.^1 Pressure: 1032_psig Test Temp. 168 Deg. F

9. Remarks (Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE 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 The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R14 to L1R15 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 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 NB 13411 ANI IL 2146 Inspector's Signature National Board, State, Province, and Endorsements 2012

FORM NIS-2 OWNER'S REPORT FOR REPAIR IREPLACEMENT ACTIVITY As Required by the Provisions of ASME Code Section XI

1. Owner Exelon Generation Company (EGC) LLC Date 02/29012 (Name) 200 Exelon Way, Kenneth Square, PA.. 19348 Sheet1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N.21" Rd. Marseilles, II. 61341 W.O. #1197366 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System B21 (Main Steam)

5. (a) Applicable Construction Code Sect III 19 71 Edition S72 Addenda, Code Cases None (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed Yes or No 1B21-FO13V SRV Crosby 63790 N/A 1B21 -F013V

Removed YES 0066 1B21-F013VSRV Crosby 63790 N/A UTC# 2730691

Installed YES 0065 Tension Nuts 1-

N/A *

Removed NO 3/8 In. 8T Tension Nuts 1- NOVA Lot # N/A UTC 2904984 2012 Installed NO 3/8 In. 8T (qty 11 8094444 Tension Nuts 1- NOVA Lot # WA UTC 2906906 2011 Installed NO 3/8 In. 8T (qty 1) 50352711

7. Description of Work Class 1 Replacement. * = Per N-5 Code Data Report on file at LaSalle County Station

8. Tests Conducted: Hydrostatic I I Pneumatic I -J Normal Operating Pressure I X I Exempt 11 Other 11 Pressure:_32 10 _psig Test Temp. 168 Deg.F

9. Remarks Safety Relief Valve replaced with refurbished spare valve UTC# 2730691 and new inlet nuts.

(Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Authorization No. N/A Expiration Date N/A Signed. ISI Engineer Date June 1 . 2012 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R14 to L1R15 ,

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 f%m or connected with this inspection.

Commissions 13411 AN, IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements Date ^fLc^, d 2012

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/29/2012 (Name) 200 Exelon Way, Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit -01" Name 2601 N. 21kRd. Marseilles, 11. 61341 #1197367 Address RepaIr Organization, P.O. No., Job No., etc.

3. Work Pe formed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date WA (Address)

4. Identification of System B21 (Main Steam)

5. (a) Applicable Construction Code Sect Iii 19 71 Edition S72 Addenda, Code Cases None (b) Applicable Edition of Section XI Used for Repair/Replacement Activity-2001 Ed..

2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed Yes or No 1821 -FO13KSRV Crosby 63790 N/A 1B21 -F013K

Removed YES 0077 1 B21 -F013K SRV Crosby 63790 WA UTC# 2730711

Installed YES 0005 Tension Nuts 1- *

N/A *

Removed NO 3/8 In. ST Tension Nuts 1- NOVA Lot # N/A UTC 2904984 2012 Installed NO 3/8 In. 8T t 12 8094444 Inlet Piping G.E.

N/A 1MSO4AK -8"

Corrected No Flan ge

7. Description of Work Class 1 Replacement. * = Per N-5 Code Data Report on file at LaSalle County Station

8. Tests Conducted: Hydrostatic I.I Pneumatic 1_1 Normal Operating Pressure I X i Exempt I _I Other 1_I Pressure: 1032 psig Test Temp. 168 Deg. F

9. Remarks Safety Relief Valve replaced with refurbished spare valve UTC# 2730711 and new inlet nuts.

(Applicable Manufacturer's Data Report to be Attached )

Corrected inlet piping flange by machining surface.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code, Section Xi.

Type Code Symbol Stamp NONE Certificate of Authorization No. N/A Expiration Date N/A Signed ISI Engineer Date June 4 . 2012 Owner or Owner's Designee, Title CERTIFICATE OF INSERVICE INSPECTION t, 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 The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R14 to / L1R15 ,

and state that to the best of my knowledge and belief, the Owner has performe d examinations and taken corrective measures described in this Owner's Report in accordance with the requirem ents 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 13411 AN, IL 2146 IC National Board, State, Province, and Endorsements

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/29/2012 (Name) 200 Exelon Way. Kenneth Square, PA.. 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21" Rd. Marseilles, II. 61341 W.O. # 1197368 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System B21 (Main Steam)

5. (a) Applicable Construction Code Sect Ili 19 71 Edition S72 Addenda, Code Cases None (b) Applicable Edition of Section X1 Used for Repair /Replacement Activity-2001 Ed. 2003 Ad.

(c) Applicable Section X1 Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No) 1 B21 -F013F SRV Crosby 63790 N/A UTC# 2730689

Removed N/A 0071 1 B21 -F013F SRV Crosby 63790 N/A UTC# 2710693

Installed N/A 0009 Tension Nuts 1- *

N/A *

Removed N/A 3/8 In. 8T Tension Nuts 1 - NOVA Ht # N/A UTC 2904984 2011 Installed N/A 3/8 In. 8T (qty 12) 8094444/

K3216 Stud 1-3/8" x 9 *

WA *

Removed N/A Stud 1-3/8"x 9 NOVA Ht.# Z855 N/A UTC # 2750945 2006 Installed N/A

7. Description of Work Class 1 Replacement. * = Per N-5 Code Data Report on file at LaSalle County Station

8. Tests Conducted: Hydrostatic I i Pneumatic I_I Normal Operating Pressure I X I Exempt i_i Other 11 Pressure: 10 32 sig Test Temp. 168 Deg.F

9. Remarks **

(Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Authorization No.

Signed 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 The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R13 to L1R14 ,

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 X1.

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 connne^c`tedwiwith this inspection.

Commissions NB 13411 ANI IL 2146 Inspector's Signature National Board, State, Province, and Endorsements Date a ` CSI 2012

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/29/2012 (Name) 200 Exelon Way. Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 1 Name 2601 N. 21 "t Rd. Marseilles II. 61341 W.O. # 1313304 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (B21) Feedwater

5. (a) Applicable Construction Code 1974 Edition W74 Addenda, Code Cases 1567 1622 & 1682 (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Com p ents Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. No. Bd. Identification Built Removed, or Stamped No. Installed (Yes or No)

Check Valve Disc Anchor- N/A 1 B21-F032A

Corrected Yes Darlin g

7. Description of Work Cl ass 1 Correctio n.-* = P er Original Manufacture r's Code Data Report.

8. Tests Conducted: Hydrostatic I I Pneumatic I_I Normal Operating Pressure I_X I Exempt I_I Other II Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks. Corrected disc by re-welding indicator plate to disc.

(Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp None Certificate of Authorization No. N/A Expiration Date Signed 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 The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected th eg components described in this Owner's Report during the period 1 J121q to 1-/ JZ/c ,

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 arisin g from or connected with this inspection.

Commissions 13411 ANI. IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements Date Ds e3O - a/ 2-

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exeion Way. Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21st Rd. Marseilles, Ii. 61341 W.O. # 1221297 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect ill 19 71 Edition No Addenda, Code Cases 1361 -1, & 1361-2 (b) Applicable Edition of Section XI Used for Repair/Replacement Activity-2001 Ed., 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Set. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembl y G.E. A2653 N/A 50-11

Removed YES CRD Assembly G.E. UTC# N/A 50-11 2012 Installed YES 2879537 **

(8) CRD Nova

N/A 50-11

Removed Ca screws NO (8) CRD Nova UTC # N/A 50-11 2010 Installed Ca screws NO 2865878 **

7. Description of Work Cl ass 1 Replacement. * = Per N-5 Code Data Report on file at LaSalle Cou nty Station

8. Tests Conducted: Hydrostatic I I Pneumatic I__I Normal Operating Pressure I X 1

- Exempt II Other I_I Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD UTC# 2879537 was refurbished with documentation provided under Receipt

170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN # A2653 under work order # 1221297. ** = Replacement CRD Code of Construction is ASME Section III. 1974 Ed. W75 Ad. Code Case 1361 -2 Reconciled to the original per PTEs PTE 88-013, PTE 88-396 and M93-0535. Replacement Capscrew Code of Construction is ASME Section Ill, Class 1, 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91-007 -0320-01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requiremen ts of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Authorization No. N/A Expiration Date N/A Signed r.^ 6^ *° ^`° ISi Coordinator Date May 15, 2012 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1 R14 to L1 R15 and state that to the best of my knowledge and belief, the Owner has performed examinatio ns 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 NB 13411, ANI IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements Date ( ,i 2012

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

1. Owner Exelon Generation Company (EGC) LLC Data 05/09/2012 (Name) 200 Exelon Way, Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21'` Rd. Marseilles. 11. 61341 W.O. # 1318402 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System RR (Reactor Recirculatlonl

5. (a) Applicable Construction Code 831.7 1969 Edition No Addenda, Code Cases none (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) none

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. No. Bd. Identification Built Removed, or Stamped No. Installed (Yes or No)

Size 301856 Hyd. Lisega 3615873- 1RR17-1008S Removed

Snubber 036 Size 301856 Hyd. Lisega 3615730- N/A UTC# 2807953 2008 Installed No Snubber 038 (3) M5 x 1 SA 193 Lisega HT # WA Cat ID #1033765 -1 2007 Installed No B7 Cap Head 32022230 Screw

7. Description of Work : Cl ass 1 Replacement, * = per N-5 or NIS-2 Code Data Report on file at LaSa lle Station

8. Tests Conducted: Hydrostatic I I Pneumatic I_I Normal Operating Pressure I I Exempt 1 _I Other I XI Pressure WA psig Test Temp. N/A Deg. F

9. Remarks. Like for Like Replacement - Lisega Hydraulic Snubber Cat ID. #1429323 -1 procured with documentation under Quality Receipt Inspection Package # 138799. M5 x 1 SA193 B7 Cap Head Screws Cat ID # 1033765-1 cannibalized off of UTC #2797824 per procedure SM-AA -102. UTC # 2797824 procured with documentation under Quality Receipt Inspection Package # 131780. Results of VT-3 of installed snubber documented on Report # E12-068 (Applicable Manufacturer's Data Report to be Attached)

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp none Certificate of Authorization No. Expiration Date N/A Signed Mark Bosnich / R/R Coordinator Date May 9th . 2012 .

Owner or Owner 's De ignee, jt'itle 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 The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R14 to L1R15 ,

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 13411A I L 2146 IC Inspector's'Signature National Board, State, Province, and Endorsements Date 1

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

1. Owner Exelon Generation Company (EGC) LLC Date 05/09/2012 (Name) 200 Exelon Way, Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 2162 Rd. Marseilles IL 61341 W.O. # 1341412 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System SC ( Standby Liquid Control)

5. (a) Applicable Construction Code 77 Edition S 77 Addenda, Code Cases none (b) Applicable Edition of Section XI Used for Repair/Replacement Activity- 2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) none

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. No. Bd. Identification Built Removed, or Stamped No. Installed (Yes or No)

Valve Mirion 1C41-F004A 2011 Installed Yes Replacement Kit Technologies 8207 8207 Trigger Body 8208 8208 Inlet Fittin g

7. Descr iption of Work : Class 1 Replacement, In stalled Valve Replaceme nt Kit UTC# 2886195

8. Tests Conducted: Hydrostatic I I Pneumatic I_I Normal Operating Pressure I X I Exempt 1I Other 1

Pressure 1220 psig Test Temp. N/A Deg. F

9. Remarks. Like for Like replacement - Valve replacement kit Cat ID. # 8175-1 procured with documentation under Quiality Receipt Inspection Package # 163015. Results of VT-2 documented on Report # E12-223 (Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp none 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 The Hartford Steam Boiler Insp. &

Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period to 4//Z/S. f 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 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 Inspector's 'Signature National Board, State, Province, and Endorsements Date.

FORM N -2 CERTIFICATE HOLDERS' DATA REPORT FOR IDENTICAL NUCLEAR PARTS AND APPURTENANCES" 003 As Required by the Provisions of the ASME Code,Section III Not to Exceed One Day's Production Pg.1 of

1. Manufactured and certified by Mlrion Technologies (Conax Nuclear), Inc. 402 Sonwil Drive, Cheektowaga, NY 14226 (nave and address of NPT Certificate Holder)

2. Manufactured for Exelon Business Services, Chicago, IL 60680 (name and address of Piachaser)

3. Location of installation Lasalle Nuclear Power Plant, Marseilles, IL, 61341 (name and address)

4. Type: N20000, Rev. G SA4791304SST 75 KSI WA N/A 2011 (drawing no.) (marl spec. no.) (tensile strength) (CRN) (year built)

5. ASME Code,Section III, Division 1: 77 Summer 77 1 N/A (edillon) (addenda date) (class) (Code Case no.)

6. Fabricated in accordance with Const. Spec. (Div. 2 only) Revision Date (no.)

7. Remarks: Trigger _ Body Subassembly for explosive actuated valve replacement kit for Standby Liquid Control System Para. NB-2121 (b) Is applicable to ram. Press fit/seal on .328 & .4375 diameters. Overall subassembly length Is 2.5".

Pressure Test at 2800 psi for 10 minutes.

8. Nom. thickness (in.) See remarks Min. design thickness (in.) See remarks Dia. ID (ft & in.) See remarks Length overall (ft & in.) See remarks

9. When applicable, Certificate Holders' Data Reports are attached for each item of this report National National Part or Appurtenance Part or Appurtenance Board No. Board No.

Serial Number Serial Number in Numerical Order in Numerical Order (1) 8207 8207 (26)

(2) (27)

(3) (28)

(4) (29)

(5) (30)

(6) (31)

(7) (32)

(8) (33)

(9) (34)

(10) (35)

(36)

(12) (37)

(13) (38)

(14) (39)

(15) (40)

(16) (41)

(17) (42)

(18) (43)

(19) (44)

(20) (45)

(21) (46)

(22) (47)

(23) (48)

(24) (49)

(25)

10. Design pressure 1500 psi. Temp. 150 T. Hydro. test pressure " See Remarks at temp. FO (when applicable)

'Supplemental information in the form of lists, sketo)es, or drawings may be used provided (1) size is 8% x 11, (2) information in items 2 and 3 on this Data Report is included on each sheet, (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

X 6 3015 7

FORM N-2 (Back - Pg. 2 of 2 )

004 Certificate Holder's Serial Nos. 8207 through 8207 CERTIFICATION OF DESIGN Design specifications certified by George 1. Skoda P.E. State CA Reg. no. 15847 (when apWicable)

Design report* certified by Michael A. Francioli P.E. State NY Reg. no. 078450-1 (when apW-ble)

CERTIFICATE OF COMPLIANCE We certify that the statements made in this report are correct and that this (these) Trigger Body conforms to the rules of construction of the ASME Code,Section III, Division 1.

NPT Certificate of Authorization No. N-1850 Expires September 3, 2013 Date Name Mirion Technologies (Conax Nuclear), Inc. Signed (NPT Certificate Holder) (authorized r ive) ^-

CERTIFICATE OF 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 New York and employed by HSB CT of Hartford, CT have inspected these items described in this Data Report on 1-4 ea- 1 n i , and state that to the best of my knowledge and belief, the Certificate Holder has fabricated these parts or appurtenances in accordance with the ASME Code,Section III, Division 1. Each part listed has been authorized for stamping on the date shown above.

By signing this certificate, neither the inspector nor his employer makes any warranty, expressed or implied, concerning the equipment described in this Data Report. Furthermore, 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.

-11 Signed Commissions NB 10964AN NY 5057 (Nat'l ad. (ind. endorsements) end state or pcov. and no.)

16 015

FORM N-2 CERTIFICATE HOLDERS' DATA REPORT FOR IDENTICAL NUCLEAR PARTS AND APPURTENANCES* 005 As Required by the Provisions of the ASME Code,Section III Not to Exceed One Day's Production Pg. 1 of 2 I. Manufactured and certified by Mirlon Technologies (Conax Nuclear), Inc. 402 Sonwil Drive, Cheektowaga, NY 14225 (name and address of NPT CeAificate Holder)

2. Manufactured for Exelon Business Services, Chicago, IL, 60680 (name and address of Ptadieser)

3. Location of installation LaSalle Nuclear Power Plaint Marseilles, IL (name and address)

4. Type: N38017 Rev. F SA478/304SST 75 KSI N/A N/A 2011 (drawing no.) (marl spec, no.) (tensile strength) (CRN) (year built)

5. ASME Code,Section III, Division 1: 77 Summer 77 1 N/A (edition) (addenda date) (class) (Code Case no.)

6. Fabricated in accordance with Const. Spec. (Div. 2 only) Revision Date (no.)

7. Remarks: Inlet Fitting for explosive actuated valve replacement kit for Standby Liquid Control System Pressure Test at 2800 psi for 10 minutes

8. Nom. thickness (in.).040" Min. design thickness (in.) .031" Dia. ID (ft & in.) .815" Length overall (ft & in.) 2.245"

9. When applicable, Certificate Holders' Data Reports are attached for each item of this report:

National National Part or Appurtenance Part or Appurtenance Board No. Board No.

Serial Number Serial Number in Numerical Order in Numerical Order (1) 8208 8208 (26)

(2) (27)

(3) (28)

(4) (29)

(5) (30)

(6) (31)

(7) (32)

(8) (33)

(9) (34)

(10) (35)

(36)

(12) (37)

(13) (38)

(14) (39)

(15) (40)

(16) (41)

(42)

(43)

(19) (44)

(20) (45)

(21) (46)

(22) (47)

(23) (48)

(24) (49)

(25) (50)

10. Design pressure 1500 psi. Temp. 150 OF. Hydro. test pressure

See Remarks at temp. OF (when applicable)

'Supplemental information in the form of lists, sketches, or drawings may be used provided (1) size is 834 x 11, (2) information in items 2 and 3 on this Data Report is included on each sheet, (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

1630 5

FORM N-2 (Back - Pg. 2 of 2 )

006 Certificate Holder's Serial Nos. 8208 through 8208 CERTIFICATION OF DESIGN Design specifications certified by George 1. Skoda P.E. State CA Reg. no. 15847 (when apphcabta)

Design report' certified by Michael A. Francioll P.E. State NY Reg. no. 078460-1 (when epphceble)

CERTIFICATE OF COMPLIANCE We certify that the statements made in this report are correct and that this (these) Inlet Fittings conforms to the rules of construction of the ASME Code,Section III, Division 1.

NPT Certificate of Authorization No. N-1850 Expires September 3, 2013 Date ^/ aO1 Name Marlon Technologies (Conax Nuclear), Inc. Signed eLe (NPT Certificate Holder) (euthorized rep esentati eve)

CERTIFICATE OF 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 New York and employed by HSB CT of Hartford, CT have inspected these items described in this Data Report on 14 . piZ_ _Z611 and state that to the best of my knowledge and belief, the Certificate Holder has fabricated these parts or appurtenances in accordance with the ASME Code,Section III, Division 1. Each part listed has been authorized for stamping on the date shown above.

By signing this certificate, neither the inspector nor his employer makes any warranty, expressed or implied, concerning the equipment described in this Data Report. Furthermore, 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.

Date 0-4-1 1 1 Signed(lf0 , -a. _ka E ate= Commissions NB 10964AN NY 5057 (Authorized Inspector) (Narl 8d. (and. endorsements) and state or prov. and no.

1 63 01 5.

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/05/2011 (Name) 200 Exelon Way, Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21°` Rd. Marseilles, II. 61341 W.O. # 1363966 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date WA (Address)

4. Identification of System B21 (Main Steam)

5. (a) Applicable Construction Code Sect III 19 71 Edition S72 Addenda, Code Cases None (b) Applicable Edition of Section X1 Used for Repair /Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section X1 Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No) 121321 +013E Crosby 63790 N/A *

Removed N/A 0073 12B21-FO13E Crosby 63790 N/A UTC#2710695

Installed N/A 0108 Tension Nut 1-3/8 *

N/A *

Removed N/A In. 8T Tension Nut 1-3/8 ATC Cat ID. N/A UTC 2813145 2008 Installed N/A In. 8T 1032997

7. Description of Work Class 1 Replacement. * = Per N-5 Code Data Report on file at LaSalle County Station

8. Tests Conducted: Hydrostatic I 1 Pneumatic 11 Normal Operating Pressure I X I Exempt 1I Other I_I Pressure:_100 3.6,psig Test Temp. 142 Deg. F

9. Remarks (Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requiremen ts of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Aut rization No. N/A Expiration Date N/A Signed ISI Engineer Date August 15 . 2011 Owner or wner's D gnee, 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this owner's Report during the period L1R13 to L1R14 ,

and state that to the best of my knowledge and belief, the Owner has performed examinatio ns 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 NB 13411 ANI IL 2146 Inspector's Signature National Board, State, Province, and Endorsements Date /S 2011

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/26/12 (Name) 200 Exelon Way, Kenneth Square, PA., 19348 Sheet 1 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21" Rd. Marseilles, II. 61341 W.O. # 1372534 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect III 19 71 Edition -No AddendaCode Cases 1361 -1. & 1361-2 (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Com p ents Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembl y G.E. 7033 N/A 38-35

Removed YES eRD-Assembly G.E. UTC# N/A 38-35 2012 Installed YES 2906852 **

(8) CRD Nova N/A 38-35 Removed NO Ca screws (8) CRD Nova UTC# N/A 38-35 2011 Installed NO Ca screws 2894883 **

7. Description of Work Cl ass 1 Replacement. * . Per N-5 Code Data Re port on f ile at LaSalle Cou nty Station Tests Conducted: Hydrostatic I I Pneumatic I1 I Normal Operating Pressure I X I Exempt I1 I Other 1_I Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD UTC # 2906852 was refurbished with documentation provided under Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN# 7033 under work order # 1372534. ** = Replacement CRD Code of Construction is ASME Section III, 1974 Ed. W75 Ad. Code Case 1361-2 Reconciled to the original per PTEs PTE 88-011 PTE 88-396 and M93-0535. Replacement Capscrew Code of Construction is ASME Section III Class 1 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91-007-0320-01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code, Section Xi.

Type Code Symbol Stamp NONE Certificate of Author' ation No. N/A Expiration Date N/A Signed ISI Coordinator Date May 15. 2012 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R14 to L1R15 ,

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 NB 13411, ANI, IL 2146 IC National Board, State, Province, and Endorsements

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/24/12 (Name) 200 Exelon Way. Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 215' Rd. Marseilles II. 61341 W.O. # 1424281 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect III 19 71 Edition No Addenda, Code Cases 1361-1. & 1361-2 (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed., 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembl y G.E. A981 WA 18-51 Removed YES CRD Assembly G.E. UTC# N/A 18-51 2012 Installed YES 2879534 **

(8) CRD Nova

N/A 18-51 Removed Ca screws NO (8) CRD Nova UTC# N/A 18-51 2011 Installed NO Ca screws 2894883 **

7. Description of Work Cl ass l Replacement. * = Per N-5 Code Data Re port on f ile at LaSalle Cou nty Station

8. Tests Conducted: Hydrostatic 1 I Pneumatic I^I Normal Operating Pressure I X I Exempt I_1 Other I_I Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD UTC# 2879534 was refurbished with documentation provided under Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN# A981 under work order # 1424281. ** = Replacement CRD Code of Construction Is ASME Section Ill, 1974 Ed. W75 Ad. Code Case 1361 -2 Reconciled to the original per PTEs PTE 88-013, PTE 88-396 and M93-0535. Replacement Capscrew Code of Construction is ASME Section III, Class 1. 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91 -007-0320-01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Authorizaon No. N/A Expiration Date N/A Signed ISI Coordinator Date May 15.

Owner or Owner's Designee, Title 2012 CERTIFICATE OF INSERVICE INSPECTION

, 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 The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R14 to L1R15 ,

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 By signing this certificate neither the Inspector nor his employer makes any warranty , expressed or implied,XI.

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.

4Z` 9isti Commissions NB 13411, ANI, IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements

/

Date_^,% 0/ 2012

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way. Kenneth Square, PA.. 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21" Rd. Marseilles, II. 61341 W.O. # 1424283 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect Ill 19 71 Edition No Addenda, Code Cases 1361 -1. & 1361-2 (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed Yes or No)

CRD Assembl y G.E. Al 022 N/A 22-43

Removed Yes CRD Assembly G.E. UTC# N/A 22-43 2012 Installed Yes 2879519 **

(8) CRD Nova

N/A 22-43

Removed N/A Ca screws (8) CRD Nova UTC# N/A 22-43 2011 Installed N/A Ca screws 2894883 Piston Tube Ass y, GE A1022 ..N/A 22-43

Removed Yes Piston Tube Ass y. GE SE1341 ..N/A 22-43 2010 Installed Yes

7. Description of Work Cl ass 1 Replacement. * = Per N-5 Code Data Re port on f ile at LaSalle Cou nty Station

8. Tests Conducted: Hydrostatic I I Pneumatic I_I Normal Operating Pressure I X I Exempt 1 _I Other 1_I Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD UTC# 2879519 was refurbished with documentation provided under Quality Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN # Al 022 under work order # 1424283. ** = Replacement CRD Code of Construction is ASME Section III, 1971 Ed. S73 & W75 Ad. Reconciled to the original per PTEs PTE 88 -013 & PTE 88-396 on file at LaSalle Station. Replacement Capscrew Code of Construction is ASME Section Ill. Class 1. 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91-007-0320-01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Authorition No. N/A Expiration Date N/A Signed ISI Coordinator Date May 15 . 2012 Owner or 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1 R14 to L1 R15 ,

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 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.

l____ __ __ Commissions NB 13411, ANI IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements 2012

170367 FORM N-2 CERTIFICATE HOLDERS' DATA REPORT FOR NUCLEAR PART AND APPURTENANCES*

As required by the P rovision of the ASME Code Rules, Section 111, Division I

1. Manufactured and certified by GE Hitachi Nuclear Energy 3901 Castle Hayne Road, Wilmington, North Carolina 28401 (Name and address of NPT Certificate Holder)

(b) Manufactured for LASALLE I & 2, MARSEILLES, IL 61341-9756 (Name and address of N Certificate Holder for completed nuclear component)

2. Identification - Certificate Holder's S/N of Part SE 1341 N Nat't tad. No. N/A (a) Constructed According to Drawing No. 798D228GO12, Rev. 40 Drawing Prepared by P. PANSOY (b) Description of Part Inspected PISTON TUBE ASSEMBLY (c) Applicable ASME Code: Section 111, Edition 1974 Addenda Date W' 75 , Case No. 1361-2 , Class t

3. Remarks: STANDARD PART FOR USE WITH REACTOR. HYDROSTATICALLY TESTED AT 1820 PSI MIN.

(Brief description of service for which component was designed)

We certify that the statements in this report are correct and this vessel part or appurtenance as defined in the code conforms to the rules of construction ol'the ASME Code Section Ill. (The applicable Designed Spec if icat ion and Stress Report are not the responsibility of the NI 'T Certificate Holder for parts. An NPT Certification Holder for appurtenances is responsible for furnishing a separate Design Specification and Stress Report 11' the appurtenances is not included in the component Design Specification and Stress Report).

g6^n2 i^

Date 10/11/2010 Signed GEH Byy (NPT Certificate Holder) 7 (SCQ Representative)

Certificate of Authorization Expires 06/16/2011 Certificate of Authorization No. NPT N-1151 CERTIFICATION OF DESIGN FOR APPURTENANCE Design information on file at GE COMPANY, SAN JOSE, CALIFORNIA Stress analysis report on file at GE COMPANY. SAN JOSE, CALIFORNIA DC22A6253. Rev. 02 Design specification certified by R.N. SRIDHAR Prof. Eng. State CALIF. Reg. No. 18345 DC22A6254, Rev. 01 Stress analysis report certified by E.Y. GIBO Prof. Eng. State CALIF. Reg. No. M18646 CERTIFICATION OF SHOP INSPECTION I. the undersigned, holding a valid commission by the National Board of Boiler and Pressure Inspectors and/or the State or Province of North Carolina and employedbent of Labor of State of North Carolina have inspected the part of a pressure vessel described in this Partial Data Report on

, O 4bnd state that to the best of my knowledge and belief the NPT Certificate Holder has constructed this part in accordance with the A ME Code Section III.

By signing this certificate, neither the Inspector nor his employer makes any warranty, expressed or implied. concerning the part described in the Partial Data Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damages or a loss of any kind arising from or connected with this inspection.

v t / , .col at a^ - ,t- NB8214 IBNA Date

- Inspector's Signature National Board, State, Province and No.

Supplemental sheets in form of lists, sketches or drawing may be used provided (I) size is 8 Y2 " x I 1'% (2) information in 1-2 on the Data Report is included on each sheet. and (3) each sheet is numbered and number of sheets is recorded in item 3 "Remarks".

FORM NIS-2 OWNER'S REPORT FOR REPAIR /REPLA CEMENT ACTIVITY As Required by the Provisions of ASME Code Sectio n XI

1. Owner Exelon Generation Company (EGC) LLC Date 04/232012 (Name) 200 Exelon Way. Kenneth Square. PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21" Rd. Marseilles, 11. 61341 W.O. # 01425580-01 _

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

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No.

Mechanical Maintenance N/A Expiration Date N/A (Address)

4. Identification of System (MS) Main Steam

5. (a) Applicable Construction Code 1973 Edition Summer 74 Addenda, Code Cases (b) Applicable Edition of Section XI Used for Repair /Replacem none ent Actlvity -21X11 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) none

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. No. Bd. Identification Built Removed, or Stamped No. Installed PSA-1 Mechanical Pacific (Yes or No) 4094 N/A 1MS14-1031S Snubber Scientific Removed PSA-1 Mechanical Pacific 538 WA UTC #2714532 WA Installed Snubber Scientific N/A

7. Description of Work : Class 1 Replace ment. per N-5 or NIS-2 Code D ata Rep ort on file at LaSal A. Tests Conducted: Hydrostatic I I Pneumatic I I le Station Normal Operatina Pressure I I Exempt I I Other I X Pressure N/A psig i Test Temp. WA Deg. F

9. Remarks. Like for Like Replacement - PSA-1 Snubber procure d with documentation under Receipt Inspection Package # 107458 (Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp none Certificate of Authorization No. n( WA Expiration Date N/A Signed Mark Bosnich /

R/R Coordinator Date April 23th Owner or Owner's Dd&gnieO Title 2012.

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 The Hartford Steam Boiler Insp. &Ins.

Connecticut have inspected the components described Co. of in this Owner's Report during the period G//ZIq to /_/ rer5" ,

and state that to the best of my knowledge and belief, the Owner has performed examinations and taken correct measures described in this Owner's Report in accord ive ance with the requirements of the ASME Code, Section By signing this certificate neither the Inspector nor XI.

his employer makes any warranty , expressed or implied concerning the examinations and corrective measures ,

described in this Owner's Report. Furthermore, neither Inspector nor his employer shall be liable in any manne the r for any personal injury or property damage or a loss any kind arising from or connected with this inspection. of Commissions /3 %/' *1/ Z "_^/e/(l Z _C_

Inspector's Signature National Board, State, Province, and Endorsements Date //

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

1. Owner Exelon Generation Company (EGC) LLC Date 05/01/2012 (Name) 200 Exelon Way, Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 218` Rd. Marseilles, II. 61341 W.O. # 1425582-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System RI (Reactor Core Isolation Cooling)

5. (a) Applicable Construction Code 1969 Edition No Addenda, Code Cases none (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed., 2003 Ad.

(c) Applicable Section XI Code Case(s) none

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. No. Bd. Identification Built Removed, or Stamped No. Installed (Yes or No Size 3052RE2 Lisega 61252-61 N/A 1 R124-112251

Removed Snubber Size 3052RE2 Lisega E0901602- N/A UTC# 2904843 N/A Installed No Snubber 005 Size 3052RE2 Lisega 61252-62 N/A 1 R124-1122S2

Removed Snubber Size 3052RE2 Lisega E0901062- N/A UTC# 2904844 N/A Installed No Snubber 008

7. Description of Work : Cl ass 1 Replacement, * = per N-5 or NIS-2 Code Data Rep ort on file at LaSa lle Station Tests Conducted: Hydrostatic I I Pneumatic 1_I Normal Operating Pressure I I Exempt 1_I Other I X I Pressure N/A psig Test Temp. N/A Deg. F

9. Remarks. Like for Like Replacement Lisega Size 3052RE2 Snubbers Cat. I D 41281 -1 procured with documentation under Quality Receipt Inspection Report # 168731 (Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp none Certificate of Authorization No. Expiration Date N/A Signed Mark Bosnich / R/R Coordinator Date May 1st , 2012 .

Owner or Owner's Des`fgnee, 113tle CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors n the State or Province QQf Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Conne t have innspectoed the ordpo eents.described in this Owner's Report during the period and state( that to the best of my kdowfedge 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 employes a be liable in any manner for any personal injury or property damage or a loss of any kind arising f o or dnne d with this inspection.

Commissions Inspector's Signature National Board, State, Province, and Endorsements Date Z S6 i

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way. Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21s` Rd. Marseilles, II. 61341 W.O. # 1434603 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect III 19 71 Edition No Addenda, Code Cases 1361 -1, & 1361-2 (b) Applicable Edition of Section XI Used for Repair/Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembl y G.E. 8356 N/A 50-23

Removed YES CRD Assembly G.E. UTC# N/A 50-23 2012 Installed YES 2879533 **

(8) CRD Nova N/A 50-23

Removed NO Ca screws (8) CRD Nova UTC# N/A 50-23 2009 Installed NO Ca screws 2836698

7. Description of Work Cl ass 1 Replacement. * = Per N-5 Code Data Re port on file at LaSalle Cou nty Station Tests Conducted: Hydrostatic I I Pneumatic I_I Normal Operating Pressure I X I Exempt I_I Other I_I Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD UTC # 2879533 was refurbished with documentation provided under Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN# 8356 under work order # 1434603. ** = Replacement CRD Code of Construction is ASME Section III, 1974 Ed. W75 Ad. Code Case 1361-2 Reconciled to the original per PTEs PTE 88-013, PTE 88-396 and M93-0535. Replacement Capscrew Code of Construction is ASME Section III Class 1, 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91-007-0320- 01 on file at LaSaIIe Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE ISI Coordinator 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R14 to L1R15 ,

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 NB 13411, ANI, IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements Date 2012

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way Kenneth Square. PA., 19348 Sheet_ 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21°L Rd. Marseilles, II. 61341 W.O. # 1434604 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect III 19 71 Edition No Addenda, Code Cases 1361 -1, & 1361-2 (b) Applicable Edition of Section XI Used for Repair/Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed Yes or No CRD Assembl y G.E. 8781 N/A 58-23

Removed YES CRD Assembly G.E. UTC# N/A 58-23 2012 Installed YES 2906848 **

(8) CRD Nova

N/A 58-23

Removed NO Ca screws (8) CRD Nova UTC# N/A 58-23 2010 Installed NO Ca screws 2865878 **

7. Description of Work Cl ass 1 Replacement. * = Per N-5 Code Data Report on file at LaSalle Cou nty Station

8. Tests Conducted: Hydrostatic I I Pneumatic I1 I Normal Operating Pressure I X I Exempt 1_1 Other 1_I Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD UTC # 2906848 was refurbished with documentation provided under Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN# 8781 under work order # 1434604. ** = Replacement CRD Code of Construction is ASME Section III, 1974 Ed. W75 Ad. Code Case 1361-2 Reconciled to the original per PTEs PTE 88-013, PTE 88-396 and M93-0535. Replacement Capscrew Code of Construction Is ASME Section III, Class 1, 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91-007-0320- 01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Expir Certificate ofati Authorization No.on N/ADate N/A Signed ISI Coordinator Date May 21, 2012 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1 R14 to L1 R15 ,

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 frr ,m or connected with this inspection.

^/ . Commissions NB 13411, ANI IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements v! 2012

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way, Kenneth Square. PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21st Rd. Marseilles, II. 61341 W.O. # 1434614 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect III 19 71 Edition No Addenda, Code Cases 1361-1, & 1361-2 (b) Applicable Edition of Section XI Used for Repair/Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembly G.E. A8930 N/A 30-23

Removed YES CRD Assembly G.E. UTC# N/A 30-23 2012 Installed YES 2906851 **

(8) CRD Nova

N/A 30-23

Removed NO Ca screws (8) CRD Nova UTC# N/A 30-23 2011 Installed NO Ca screws 2894883

7. Description of Work Cl ass 1 Replacement. * = Per N-5 Code Data Report on file at LaSalle Cou nty Station Tests Conducted: Hydrostatic I I Pneumatic I_I Normal Operating Pressure I X I Exempt 1_I Other 1_I Pressure 1032 osig Test Temp. 168 Deg. F

9. Remarks CRD UTC# 2906851 was refurbished with documentation provided under Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN# A8930 under work order # 1434614 ** = Replacement CRD Code of Construction is ASME Section III, 1974 Ed. W75 Ad. Code Case 1361-2 Reconciled to the original per PTEs PTE 88-013. PTE 88-396 and M93-0535. Replacement Capscrew Code of Construction is ASME Section III, Class 1 1986 Ed. No Ad. Reconciled to the original Code of Construction Per PTE M91-007-0320-01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Date May 17, 2012 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 The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1 R14 to L1 R15 ,

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 NB 13411, ANI, IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements Date _____ __ 2012

FORM NIS-2 OWNER'S REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of ASME Code Section XI Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way. Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21" Rd. Marseilles 11. 61341 W.O. # 1434616 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect III 19 71 Edition No Addenda, Code Cases 1361-1, & 1361-2 (b) Applicable Edition of Section X1 Used for Repair/ Replacement Activity -2001 Ed., 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Com p ents Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembl y G.E. 7822 N/A 42-23

Removed Yes CRD Assembly G.E. UTC# WA 42-23 2012 Installed Yes 2879520 **

(8) CRD Nova

N/A 42-23

Removed WA Ca screws (8) CRD Nova UTC# WA 42-23 2011 Installed N/A Ca screws 2894883 **

Piston Tube Ass y. GE 7822 ..N/A 42-23

Removed Yes Piston Tube Ass y. GE SE1385 ..N/A 42-23 2010 Installed Yes

7. Descr iption of Work Class 1 Replacement. * = Per N-5 Code Data Report on file at LaSalle County Station

8. Tests Conducted: Hydrostatic I I Pneumatic I_I Normal Operating Pressure I X I Exempt I1 Other I_I Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD UTC # 2879520 was refurbished with documentation provided under Quality Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached) installed as a replacement for SN# 7822 under work order # 1434616 ** = Replacement CRD Code of Construction is ASME Section III. 1971 Ed. S73 & W75 Ad. Reconciled to the original per PTEs PTE 88-013 & PTE 88-396 on file at LaSalle Station. Replacement Capscrew Code of Construction is ASME Section ill Class 1, 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91-007-0320 -0 1 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Authorization No. N/A Expiration Date N/A Signed ISI Coordinator Date Mav 21 2012 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L117114 to L1R15 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 con nected with this inspection.

Commissions NB 13411 ,__ANI,IL 2146 IC Inspector's 9 ature National Board, State, Province, and Endorsements Date f-1i .. -___!JL ___ 2012

170 367 FORM N-2 CERTIFICATE HOLDERS' DATA REPORT FOR NUCLEAR PART AND APPURTENANCES*

As required by the Provision of the ASME Code Rules, Section 1I!, Division I

1. Manufactured and certified by GE Hitachi Nuclear Energy 3901 Castle Hayne Road, Wilmington, North Carolina 28401 (Name and address of NPT Certificate Holder)

(b) Manufactured for LASALLE I & 2, MARSEILLES, IL 61341-9756 (Name and address of N Certificate I (older for completed nuclear component)

J 2. Identification - Certificate Holder's S/N of Part (a) Constructed According to Drawing No.

SE1385 Nat'l Bd. No. N/A 798D228G012, Rev. 40 Drawing Prepared by P. PANSOY (h) Description of Part Inspected PISTON TUBE ASSEMBLY (c) Applicable ASME Code: Section III, Edition 1974 , Addenda Date W' 75 , Case No. 1361-2 . Class 1

3. Remarks: STANDARD PART FOR USE WITH REACTOR. HYDROSTATICALLY TESTED AT 1820 PSI MIN.

(Brief description of service for which component was designed)

We certify that the statements in this report are correct and this vessel part or appurtenance as defined in the code conforms to the rules of construction of the ASME Code Section Ill. (The applicable Designed Specification and Stress Report are not the responsibility of the NPT Certificate Holder for parts. An NPT Certification Holder for appurtenances is responsible for furnishing a separate Design Specification and Stress Report if the appurtenances is not included in the component Design Specification and Stress Report).

i Date 10/11/2010 Signed GEH By (NPTCertiftcate Holder) (SCO Representative)

Certificate of Authorization Expires 06/16/2011 Certificate of Authorization No. NPTN-1151 CERTIFICATION OF DESIGN FOR APPURTENANCE Design information on life at GE COMPANY, SAN JOSE, CALIFORNIA Stress analysis report on tile at GE COMPANY, SAN JOSE, CALIFORNIA DC22A6253. Rev. 02 Design specification certified by B.N. SRIDHAR Prof. Eng. State CALIF. Reg. No. 18345 DC22A6254, Rev. 01 Stress analysis report certified by E.Y. GIGO Prof. Eng. State CALIF. Reg. No. M18646 CERTIFICATION OF SHOP INSPECTION

1. the undersigned. holding a valid commission by the National Board of Boiler and Pressure Inspectors and/or the State or Province of North Carolina and loyed by Department of Labor of State of North Carolina have inspected the part ofa pressure vessel described in this Partial Data Report on 9/10) and state that to the best of my knowledge and belief. the NPT Certificate Holder has constructed this part in accordance with the A.'ME Code Section Ill.

By signing this certificate, neither the Inspector nor his employer makes any wa rranty, expressed or implied. concerning the part described in the Partial Data Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damages or a loss of any kind arising from or connected with this inspection.

^d b! *1 ^

f_v NB8214 IRNA Date Inspector's Signature National Board. State, Province and No.

Supplemental sheets in form of lists, sketches or drawing may be used provided (1) size is 8 %" x I I", (2) information in 1-2 on the Data Report is included on each sheet. and (3) each sheet is numbered and number of sheets is recorded in item 3 "Remarks".

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way. Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21't Rd. Marseilles, II. 61341 W.O. # 1434617 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive 5

S. (a) Applicable Construction Code Sect III 19 71 Edition No Addenda, Code Cases 1361-1, & 1361-2 (b) Applicable Edition of Section XI Used for Repair/Replacement Activity-2001 Ed., 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembl y G.E. Al 029 N/A 14-35

Removed Yes CRD Assembly G.E. UTC# N/A 14-35 2012 Installed Yes 2879523 **

(8) CRD Nova N/A 14-35

Removed N/A Ca screws (8) CRD Nova UTC# N/A 14-35 2011 Installed N/A Ca screws 2894883 **

Piston Tube Ass y. GE A1029 ..NIA 14-35

Removed Yes Piston Tube Ass y, GE SE1295 ..N/A 14-35 2010 Installed Yes

7. Description of Work Class 1 Replacement. Per N-5 Code Data Re port on file at LaSalle Cou nty Station Tests Conducted: Hydrostatic I I Pneumatic I__I Normal Operating Pressure I X I Exempt I_I Other 1_I Pressure 1032 Psig Test Temp. 168 Deg. F

9. Remarks CRD UTC# 2879523 was refurbished with documentation provided under Quality Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN# A1029 under work order # 1434617. ** = Replacement CRD Code of Construction is ASME Section III, 1971 Ed. S73 & W75 Ad. Reconciled to the original per PTEs PTE 88-013 & PTE 88-396 on file at LaSalle Station. Replacement Capscrew Code of Construction is ASME Section III Class 1 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91-007-0320-01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE ISI Coordinator 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R14 to L1R15 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 NB 13411 ANI 11-21461C Inspector's Signature National Board, State, Province, and Endorsements Date ' 2012

170367 FORM N-2 CERTIFICATE HOLDERS' DATA REPORT FOR NUCLEAR PART AND APPURTENANCES*

As required by the Provision of the ASME Code Rules,Section III, Division I

1. Manufactured and certified by GE Hitachi Nuclear Energy 3901 Castle Hayne Road, Wilmington, North Carolina 28401 (Name and address of NPT Certificate Holder)

(b) Manufactured for LASALLE I & 2, MARSEILLES, IL 61341-9756 (Name and address of N C ifcate Holder for completed nuclear component)

2. Identification -Certificate Holder's SIN of Part SE1295 Nat'l Bd. No. N/A (a) Constructed According to Drawing No. 798D228C012. Rev. 40 Drawing Prepared by P. PANSOY (b) Description of Part Inspected PISTON TUBE ASSEMBLY (t:) Applicable ASME Code: Section Ill. Edition 1974 , Addenda Date W' 75 , Case No. 1361-2 . Class 1

3. Remarks: STANDARD PART FOR USE WITH REACTOR. HYDROSTATICALLY TESTED AT 1820 PSI MIN.

(Brief description of service for which component was designed)

We certify that the statements in this report are correct and this vessel part or appurtenance as defined in the code conforms to the rules of construction of the ASME Code Section Ill. (The applicable Designed Specification and Stress Report are not the responsibility of the NPT Certificate Holder for parts. An NP'f Certification Holder for appurtenances is responsible for furnishing a separate Design Specification and Stress Report if the appurtenances is not included in the component Design Specification and Stress Report).

Date 10/11/2010 Signed GEH By V ^J (NPT Certificate Holder) (SCQ Representative)

Certificate of Authorization Expires 06/ 16/2011 Certificate of Authorization No. NPT N-1151 CERTIFICATION OF DESIGN FOR APPURTENANCE Design information on File at GE COMPANY, SAN JOSE, CALIFORNIA Stress analysis report on tile at GE COMPANY, SAN JOSE, CALIFORNIA DC22A6253, Rev. 02 Design specification certified by B.N. SRIDHAR Prof. Eng. State CALIF. Reg. No. 18345 DC22A6254. Rev. 01 Stress analysis report certified by E.Y. GIBO Prof. Eng. State CALIF. Reg. No. M18646 CERTIFICATION OF SHOP INSPECTION 1, the undersigned. holding a valid commission by the National Board of Boiler and Pressure Inspectors and/or the State or Province of North Carolina and ct toed by Department of Labor of State of North Carolina have inspected the part of a pressu re vessel described in this Partial Data Report on 4w IQand state that to the best of my knowledge and belief, the NPT Certificate Holder has constructed this part in accordance with the A.'MECode Section Ill.

By signing this certificate. neither the Inspector nor his employer makes any warranty, expressed or implied. concerning the part described in the Partial Data Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damages or a loss of any kind ,wising from or connected with this inspection.

NB8214 1BNA Date Inspector's Signature National Board, State, Province and No.

- __V_ __ - -

Supplemental sheets in form of lists, sketches or drawing may be used provided (I) size is 8'A " x I 1", (2) information in 1.2 on the Data Report is included on each sheet, and (3) each sheet is numbered and number of sheets is recorded in item 3 "Remarks".

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way, Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21" Rd. Marseilles, 11. 61341 W.O. # 1434618 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect Ill 19 71 Edition No Addenda, Code Cases 1361-1. & 1361-2 (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembl y G.E. 8271 N/A 38-23

Removed YES CRD Assembly G.E. UTC# N/A 38-23 2012 Installed YES 2879522 **

(8) CRD Nova

N/A 38-23

Removed NO Ca screws (8) CRD Nova UTC# N/A 38-23 2011 Installed NO Ca screws 2894883 **

7. Description of Work Cl ass 1 Replacement. * = Per N-5 Code Data Re port on file at LaSalle County Station

8. Tests Conducted: Hydrostatic I___1 Pneumatic 1_I Normal Operating Pressure I X 1 Exempt 1 _I Other Ii Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD UTC# 2879522 was refurbished with documentation provided under Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN # 8271 under work order # 1434618. ** = Replacement CRD Code of Construction is ASME Section III, 1974 Ed. W75 Ad. Code Case 1361-2 Reconciled to the original per PTEs PTE 88-013, PTE 88-396 and M93-0535. Replacement Capscrew Code of Construction is ASME Section Ill. Class 1, 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91-007 -0320-01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Authorization No. N/_ Expiration Date N/A Signed ISI Coordinator Date May 17. 2012 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R14 to L1R15 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 NB 13411, ANI IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements Date 2012

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

1. Owner Exelon Generation Company (EGC) LLC Date 0212 (Name) 200 Exelon Way, Kenneth Square, PA., 19348 Sheet _ 1 1 of Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 218` Rd. Marseilles II. 61341 W.O. # 1434621 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect Ill 19 71 Edition No Addenda, Code Cases 1361-1, & 1361-2 (b) Applicable Edition of Section XI Used for Repair/Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembl y G.E. 9288 WA 06-27 Removed YES CRD Assembly G.E. UTC# WA 06-27 2012 Installed YES 2906849 **

(8) CRD Nova WA 06-27 Removed NO Ca screws (8) CRD Nova UTC# WA 06-27 2010 Installed NO Ca screws 2865878

7. Description of Work Cl ass 1 Replace ment. * = Per N-5 Code Data Report on file at LaSalle Cou nty Station

8. Tests Conducted: Hydrostatic I 1 Pneumatic I_I Normal Operating Pressure I X I Exempt 11 Other II Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD UTC# 2906849 was refurbished with documentation provided under Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN # 9288 under work order # 1434621. ** = Replacement CRD Code of Construction is ASME Section III, 1974 Ed. W75 Ad. Code Case 1361 -2 Reconciled to the original per PTEs PTE 88-013. PTE 88-396 and M93-0535. Replacement Capscrew Code of Construction is ASME Section III. Class 1. 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91 -007-0320-01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Authorization No. N/A Expiration Date N/A Signed ISI Coordinator Date June 1. 2012 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. &

Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L11314 to L1R15 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 arisi$ from or connected with this inspection.

Commissions NB 13411 ANI, IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements Date 6--.- &; 2012

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way, Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21" Rd. Marseilles, II 61341 W.O. # 1434622 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect III 19 71 Edition No Addenda, Code Cases 1361 -1. & 1361-2 (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed., 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembl y G.E. 8246 N/A 18-23 Removed YES CRD Assembly G.E. UTC# N/A 18-23 2012 Installed YES 2906854 **

(8) CRD Nova N/A 18-23

Removed NO Ca screws (8) CRD Nova UTC# N/A 18-23 2011 Installed NO Ca screws 2894883 **

7. Descri ption of Work Cl ass 1 Replace ment. * = Per N-5 Code Data Re port on f ile at LaSalle County Station

8. Tests Conducted: Hydrostatic I 1 Pneumatic I_I Normal Operating Pressure I X I Exempt I_i Other I_I Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD UTC# 2906854 was refurbished with documentation provided under Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN # 8246 under work order # 1434622. ** = Replacement CRD Code of Construction is ASME Section III, 1974 Ed. W75 Ad. Code Case 1361-2 Reconciled to the original per PTEs PTE 88-013, PTE 88-396 and M93 -0535. Replacement Capscrew Code of Construction is ASME Section III Class 1, 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91-007-0320 -01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Authorization No. N/A Expiration Date N/A Signed ISI Coordinator Date May 17, 2012 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R14 to L1R15 ,

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 connectSo with this inspection.

Commissions NB 13411, ANI IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements Date 41 2012

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way. Kenneth Square, PA.. 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21st Rd. Marseilles, If. 61341 W.O. # 1434623 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive 5

S. (a) Applicable Construction Code Sect Ill 19 _Z1 Edition No Addenda, Code Cases 1361-1, & 1361-2 (b) Applicable Edition of Section XI Used for Repair/Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section Xi Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembl y G.E. 8317 N/A 38-55

Removed YES CRD Assembl y G.E. 7387 N/A 26-31 Installed YES (8) CRD Nova

N/A 38-55 Removed NO Ca screws (8) CRD Nova UTC# N/A 38-55 2011 Installed NO Ca screws 2894883 **

7. Description of Work Cl ass 1 Replacement. * = Per N-5 Code Data Report on file at LaSalle Cou nty Station

8. Tests Conducted: Hydrostatic 1 1 Pneumatic I__I Normal Operating Pressure I X 1 Exempt i_i Other 11 Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD SN# 7387 was removed from core location 26-31 and installed as a replacement for SN# 8317 (Applicable Manufacturer's Data Report to be Attached )

at core location 38-55 under work order # 1434623. ** = Replacement CRD Code of Construction is ASME Section 111, 1974 Ed. W75 Ad. Code Case 1361 -2 Reconciled to the original per PTEs PTE 88-013. PTE 88-396 and M93-0535. Replacement Capscrew Code of Construction is ASME Section III, Class 1, 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91-007-0320-01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Authorization No. N/A Expiration Date N/A Signed=/^ ISI Coordinator Date Mav 31. 2012 Owner or 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R14 to L1R15 ,

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 NB 13411. ANI IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements 2012

FORM NIS-2 OWNER'S REPORT FOR REPAIR /REPLACEMENT ACTIVITY As Required by the Provisions of ASME Code Section XI Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way, Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21M Rd. Marseilles II. 61341 W.O. # 1434624 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date WA (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect III 19 71 Edition No Addenda, Code Cases 1361 -1, & 1361-2 (b) Applicable Edition of Section XI Used for Repair/Replacement Activity- 2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No CRD Assembl y G.E. 9394 WA 54-35 " Removed Yes CRD Assembly G.E. UTC# N/A 54-35 2012 Installed Yes 2906847 (8) CRD Nova " WA 54-35 " Removed N/A Ca screws (8) CRD Nova UTC# N/A 54-35 2011 Installed WA Ca screws 2865878 Piston Tube Ass y. GE 9394 ..WA 54-35 Removed Yes Piston Tube Ass y. GE SE1378 ..WA 54-35 2011 Installed Yes

7. Description of Work Cla ss l Replacement. Per N -5 Code Data Re port on file at LaSalle County Station

8. Tests Conducted: Hydrostatic I I Pneumatic I_I Normal Operating Pressure I X I Exempt I _I Other I_I Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD UTC # 2906847 was refurbished with documentation provided under Quality Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN # 9394 under work order # 1434624. Replacement CRD Code of Construction is ASME Section III. 1971 Ed. S73 & W75 Ad. Reconciled to the original per PTEs PTE 88-013 & PTE 88-396 on file at LaSalle Station. Replacement Capscrew Code of Construction is ASME Section III, Class 1. 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91-007-0320-01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Authorization No. WA Expiration Date N/A Signed ISI Coordinator Date May 21 . 2012 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1 R14 to L1 R15 ,

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 arisinq,frgm or connected with this inspection.

Commissions NB 13411, ANI, IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements

FORM N-2 CERTIFICATE HOLDERS' DATA REPORT FOR NUCLEAR PART AND APPURTENANCES*

As required by the Provision of the ASME Code Rules,Section III, Division I

1. Manufactured and certified by CE-Hitachi Nuclear Energy Americas LLC 3901 Castle Hayne Road, Wilmington, North Carolina 28401 (Name and address of NPT Certificate Holder)

(b) Manufactured for LA SALLE I & 2, MARSEILLES, IL 61341 (Name and address of N Certificate Holder for completed nuclear component)

2. Identification - Certificate Holder's S/N of Part SE1378 Nat'l Bd. No. N/A (a) Constructed According to Drawing No. 798D228G012, Rev. 40 Drawing Prepared by P. PANSOY (b) Description of Part Inspected PISTON TUBE ASSEMBLY (c) Applicable ASME Code: Section 111, Edition 1974 , Addenda Date W' 75 , Case No. 1361-2 , Class 1

3. Remarks: STANDARD PART FOR USE WITH REACTOR. HYDROSTATICALLY TESTED AT 1820 PSI MIN.

(Brief description of service for which component was designed)

We certify that the statements in this report are correct and this vessel part or appurtenance as defined in the code conforms to the rules of construction of the ASME Code Section III. (The applicable Designed Specification and Stress Report are not the responsibility of the NPT Certificate Holder for parts. An NPT Certification Holder for appurtenances is responsible for furnishing a separate Design Specification and Stress Report if the appurtenances is not included in the component Design Specification and Stress Report).

Date 08/22/2011 Signed CE- Hitachi Nuclear Energy Americas LLC By (NPT Certificate Holder)

Certificate of Authorization Expires 06/ 16/2014 Certificate of Authorization No. NPT N-I 151 CERTIFICATION OF DESIGN FOR APPURTENANCE Design information on file at GE COMPANY, SAN JOSE, CALIFORNIA Stress analysis report on file at GE COMPANY, SAN JOSE, CALIFORNIA DC22A6253, Rev. 02 Design specification certified by B.N. SRIDHAR Prof. Eng. State CALIF. Reg. No. 18345 DC22A6254. Rev. 01 Stress analysis report certified by E.Y. GIGO Prof. Eng. State CALIF. Reg. No. M18646 CERTIFICATION OF SHOP INSPECTION

1. the undersigned, holding a valid commission by the National Board of Boiler and Pressure Inspectors and/or the State or Province of North Carolina and employed by Department of Labor of State of North Carolina have inspected the part of a pressure vessel described in this Partial Data Report on S1,19 , e.o and state that to the best of my knowledge and belief, the NPT Certificate Holder has constructed this part in accordance with the SME Code Section Ill.

By signing this certificate, neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the part described in the Partial Data Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damages or a loss of any kind arising from or connected with this inspection.

8 a & , Pell NB8214 IBNA D le Inspectors Signature National Board, State, Province and No.

Supplemental sheets in form of lists, sketches or drawing may be used provided ( 1 ) size is 8 V 2 " x I 1 ", (2) information in 1-2 on the Data Report is included on each sheet, and (3) each sheet is numbered and number of sheets is recorded in item 3 "Remarks".

FORM NIS -2 OWNER'S REPORT FOR REPAIR /REPLACEMENT ACTIVITY As Required by the Provisions of ASME Code Section XI Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way. Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 213' Rd. Marseilles, II 61341 W.O. # 1434625 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect III 19 71 Edition No Addenda, Code Cases 1361-1. & 1361-2 (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembl y G.E. 8272 WA 46-35

Removed YES CRD Assembly G.E. UTC# N/A 46-35 2012 Installed YES 2906846 **

(8) CRD Nova

N/A 46-35

Removed NO Ca screws (8) CRD Nova UTC# N/A 46-35 2010 Installed NO Ca screws 2876277 **

7. Description of Work Cl ass 1 Replacement. * = Per N-5 Code Data Report on file at LaSalle Cou nty Station

8. Tests Conducted: Hydrostatic I I Pneumatic I_I Normal Operating Pressure I X I Exempt I _I Other 1_I Pressure 1032 sig Test Temp. 168 Deg. F

9. Remarks CRD UTC# 2906846 was refurbished with documentation provided under Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN# 8272 under work order # 1434625. ** = Replacement CRD Code of Construction is ASME Section III, 1974 Ed. W75 Ad. Code Case 1361 -2 Reconciled to the original per PTEs PTE 88-013, PTE 88-396 and M93-0535. Replacement Capscrew Code of Construction is ASME Section III Class 1 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91-007 -0320- 01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Authorization No.

Sinned <---^ 5^

Owner or 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1 R14 to L1 R15 ,

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 foss of any kind arising from or connected with this inspection.

Commissions NB 13411, ANI, IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements Date a- - - O/ 2012

FORM NIS-2 OWNER'S REPORT FOR REPAIR /REPLACEMENT ACTIVITY As Required by the Provisions of ASME Code Section XI Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way, Kenneth Square. PA .. 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 219' Rd. Marseilles II. 61341 W.O. # 1434627 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect III 19 71 Edition No Addenda, Code Cases 1361 - 1. & 1361-2 (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembly G.E. A1000 N/A 22-23 Removed YES CRD Assembly G.E. UTC# N/A 22-23 2012 Installed YES 2906850 (8) CRD Nova WA 22-23 Removed NO Ca screws (8) CRD Nova UTC# N/A 22-23 2011 Installed NO Ca screws 2894883

7. Description of Work Cl ass 1 Replace ment. Per N-5 Code Data Report on file at LaSalle Cou nty Station

8. Tests Conducted: Hydrostatic I I Pneumatic II Normal Operating Pressure I 2I Exempt 1 __I Other 1I Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD UTC # 2906850 was refurbished with documentation provided under Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN # A1000 under work order # 1434627. Replacement CRD Code of Construction is ASME Section 111, 1974 Ed. W75 Ad. Code Case 1361 -2 Reconciled to the original per PTEs PTE 88-013, PTE 88-396 and M93 -0535. Replacement Capscrew Code of Construction is ASME Section 111, Class 1. 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91 -007-0320-01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Authorization No. N/A Expiration Date N/A Signed ISI Coordinator Date May 17. 2012 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1 R14 to L1 R15 ,

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.

11 Commissions NB 13411 ANI IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements 2012

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way, Kenneth Square, PA.. 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21 a1 Rd. Marseilles, II. 61341 W.O. # 1434629 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp WA (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect 111 19 71 Edition No Addenda, Code Cases 1361 -1, & 1361-2 (b) Applicable Edition of Section XI Used for Repair/ Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembl y G.E. 7725 WA 18-47 Removed YES CRD Assembly G.E. UTC# N/A 18-47 2012 Installed YES 2879535 **

(8) CRD Nova

WA 18-47 Removed NO Ca screws (8) CRD Nova UTC# N/A 18-47 2011 Installed NO Ca screws 2894883

7. Descr iption of Work Cla ss 1 Replacement. * = Per N-5 Code Data Report on file at LaSalle Cou nty Station Tests Conducted: Hydrostatic I 1 Pneumatic 11 Normal Operating Pressure 1 X 1 Exempt I_I Other I_I Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD UTC# 2879535 was refurbished with documentation provided under Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN # 7725 under work order # 1434629. ** = Replacement CRD Code of Construction is ASME Section III, 1974 Ed. W75 Ad. Code Case 1361 -2 Reconciled to the original per PTEs PTE 88-013, PTE 88-396 and M93-0535. Replacement Capscrew Code of Construction is ASME Section III Class 1 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91-007-0320-01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE 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 The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1 R14 to L1 R15 ,

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 N1313411. ANI IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements 2012

FORM NIS-2 OWNER'S REPORT FOR REPAIR /REPLACEMENT ACTIVITY As Required by the Provisions of ASME Code Section XI 1 Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way. Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21" Rd. Marseilles II. 61341 W.O. # 1458619-02 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp NIA (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect Ill 19 71 Edition No Addenda, Code Cases 1361-1. & 1361-2 (b) Applicable Edition of Section XI Used for Repair/Replacement Activity-2001 Ed. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembl y G.E. 7387 N/A 26-31

Removed YES CRD Assembly G.E. UTC# N/A 26-31 2012 Installed YES 2879538 (8) CRD Nova

N/A 26-31

Removed NO Ca screws (8) CRD Nova UTC# N/A 26-31 2010 Installed NO Ca screws 2876277

7. Descr iption of Work Cl ass 1 Replacement. * = Per N-5 Code Data Report on file at LaSalle Cou nty Station

8. Tests Conducted: Hydrostatic 1_1 Pneumatic 1_I Normal Operating Pressure I X 1 Exempt I _I Other I_I Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD UTC # 2879538 was refurbished with documentation provided under Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN # 7387 under work order # 1458619. ** = Replacement CRD Code of Construction is ASME Section III. 1974 Ed. W75 Ad. Code Case 1361-2 Reconciled to the original per PTEs PTE 88-013. PTE 88-396 and M93 -0535. Replacement Capscrew Code of Construction is ASME Section III. Class 1. 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91 -007 -0320-01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R14 to L1R15 ,

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 NB 13411. ANI IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements 2012

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way, Kenneth Square. PA .. 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21" Rd. Marseilles ll. 61341 W.O.#1458619-03 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date WA (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect Ill 19 71 Edition No Addenda, Code Cases 1361 -1. & 1361-2 (b) Applicable Edition of Section XI Used for Repair/Replacement Activity- 2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembly G.E. 9604 N/A 30-27

Removed Yes CRD Assembly G.E. UTC# N/A 30-27 2012 Installed Yes 2879532 **

(8) CRD Nova

N/A 30-27 Removed N/A Ca screws (8) CRD Nova UTC# N/A 30-27 2010 Installed WA Ca screws 2876277 **

Cylinder Tube and GE 9604 ..N/A 30-27

Removed Yes Flan ge 7.

Cylinder Tube and Flan ge GE

I A9323 ..WA 30-27 2010 Installed T

Description of Work Cl ass 1 Replacement. * = Per N-5 Code Data Re port on f ile at LaSalle County Station Yes

8. Tests Conducted: Hydrostatic I 1 Pneumatic I_I Normal Operating Pressure I X 1 Exempt 11 Other I1 Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD UTC# 2879532 was refurbished with documentation provided under Quality Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN# 9604 under work order # 1458691. ** = Replacement CRD Code of Construction is ASME Section Ill, 1971 Ed. S73 & W75 Ad. Reconciled to the original per PTEs PTE 88-013. & PTE 88-396 on file at LaSalle Station. Replacement Capscrew Code of Construction is ASME Section III. Class 1. 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91-007-0320 -01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code, Section X1.

Type Code Symbol Stamp NONE Certificate of Authorization No. N/A Expiration Date N/A Signed ISI Coordinator Date May 31 . 2012 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1 R14 to L1 R15 ,

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 X1.

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 NB 13411, ANI IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements 2012

170367 FORM N-2 CERTIFICATE HOLDERS' DATA REPORT FOR NUCLEAR PART AND APPURTENANCES*

As required by the Provision of the ASME Code Rules,Section III, Division I

1. Manufactured and certified by GE Hitachi Nuclear Energy 3901 Castle Hayne Road, Wilmington, North Carolina 28401 (Name and address of NPT Certificate Holder)

(b) Manul'uctured for LaSalle I and 2, Marseilles, Illinois 61341 (Name and address or N Certificate Holder for completed nuclear component)

2. Identification -Certificate Holder's S/N of Part A9323 Nat'l fad. No. N/A (a) Constructed According to Drawing No, 919D2580003, Rev. 22 Drawing Prepared by P. RODRIGUEZ (b) Description of Part Inspected CYLINDER-TUBE AND FLANGE (c) Applicable ASME Code: Section III, Edition 1974 . Addenda Date W' 75 , Case No. 1361-2 . Class I

3. Remarks: STANDARD PART FOR USE WITH REACTOR. HYDROSTATICALLY TESTED AT 1820 PSI. MIN.

(Brief description of service for which component was designed)

We certify that the statements in this report are correct and this vessel part or appurtenance as defined in the code conforms to the rules of construction of the ASME Code Section III. (The applicable Designed Specification and Stress Report arc not the responsibility of the NPT Certificate Holder for parts. An NPT Certification Holder for appurtenances is responsible for furnishing a separate Design Specification and Stress Report if the appurtenances is not included in the component Design Specification and Stress Report).

Date Signed GEH By 941^ ,

(N PT Certificate Holder) (SCQ Representati ve)

. Certificate of Authorisation Expires 06/16/2011 Certificate of Authorization No. NPT N-I 151 CERTIFICATION OF DESIGN FOR APPURTENANCE Design information on file at GE COMPANY, SAN JOSE, CALIFORNIA Stress analysis report on file at GE COMPANY, SAN JOSE, CALIFORNIA DC22A6253. Rev. 02 Design specification certified by B.N. SRIDHAR Prof. Eng. State CALIF. Reg. No. 18345 DC:22A6254. Rev. t)1 Stress analysis report certified by E.Y. GIBO Prof. Eng. State CALIF. Reg. No. \t t8646 CERTIFICATION OF SHOP INSPECTION

1. the undersigned. holding a valid commission by the National Board of Boiler and Pressure Inspectors and/or the State or Province of North Carolina and employed by Dep of Labor of State of North Carolina have inspected the part of a pressure vessel described in this Partial Data Report on "ems. 2,y)^te that to the best of my knowledge and belief; the NPT Certificate Holder has constructed this part in accordance with the MME Code Section Ill.

By signing this certificate, neither the Inspector nor his employer makes any warranty, expressed or implied. concerning the part described in the Partial Data Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damages or a loss of' any kind arising from or connected with this inspection.

le, LS_ * ^0 NBS214IBNA

[) I Inspector's Signature National Board. State. Province and No.

Supplemental sheets in form of lists, sketches or drawing may be used provided (1) size is 8 h " x I 1". (2) information in 1-2 on the Data Report is included on each sheet, and (3) each sheet is numbered and number of sheets is recorded in item 3 -Remarks".

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way. Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 213t Rd. Marseilles II. 61341 W.O. # 967884 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date WA (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect III 19 71 Edition No Addenda, Code Cases 1361-1.

& 1361-2 (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed..

2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembl y G.E. 6864 N/A 42-55

Removed YES CRD Assembl y G.E. 9604 N/A 30-27

Installed YES (8) CRD Nova

N/A 42-55

Removed NO Ca screws (8) CRD Nova UTC# N/A 42-55 2010 Installed Ca screws NO 2876277 **

7. Descr iption of Work Cl ass 1 Replacement. * = Per N-5 Code Data Re port on file at LaSalle Cou nty Station

8. Tests Conducted: Hydrostatic I I Pneumatic I_I Normal Operating Pressure I X I Exempt I_I Other I_I Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD SN# 9604 was removed from core location 30-27 and installed as a replacement for SN#6864 (Applicable Manufacturer's Data Report to be Attached )

at core location 42-55 under work order # 967884. ** = Replacement CRD Code of Construction is ASME Section 111. 1974 Ed. W75 Ad. Code Case 1361 -2 Reconciled to the original per PTEs PTE 88-013, PTE 88-396 and M93-0535. Replacement Capscrew Code of Construction is ASME Section III, Class 1, 1986 Ed. No Ad. Reconciled to the original Code of Construction Per PTE M91 -007-0320-01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requireme nts of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Auion N N/A Expiration Date N/A Signed ISI Coordinator Date May 31, 2012 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L11314 to L1R15 ,

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 requireme nts 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.

!/frGG ____ Commissions NB 13411 AK IL 2146 IC Inspector's Signature National Board, State, Province, and Endorsements Date,, d/ 2012

.11

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

1. Owner Exelon Generation Company (EGC) LLC Date 02/29/12 (Name) 200 Exelon Way. Kenneth Square, PA.. 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 213' Rd. Marseilles II 61341 W.O. # 967886 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RD) Control Rod Drive

5. (a) Applicable Construction Code Sect Ili 19 71 Edition No Addenda, Code Cases 1361-1. & 1361-2 (b) Applicable Edition of Section XI Used for Repair /Replacement Activity- 2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Com p ents Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

CRD Assembl y G.E. 9442 N/A 42-35 Removed YES CRD Assembly G.E. UTC# N/A 42-35 2012 Installed YES 2906855 **

(8) CRD Nova N/A 42-35 Removed NO Ca screws (8) CRD Nova UTC# N/A 42-35 2010 Installed NO Ca screws 2876277 **

7. Description of Work Cla ss 1 Replace ment. * = Per N-5 Code Data Re port on f ile at LaSalle Cou nty Station Tests Conducted: Hydrostatic I I Pneumatic i__ Normal Operating Pressure I X I Exempt irl Other 1_I Pressure 1032 psig Test Temp. 168 Deg. F

9. Remarks CRD UTC # 2906855 was refurbished with documentation Provided under Receipt # 170367 and (Applicable Manufacturer's Data Report to be Attached )

installed as a replacement for SN# 9442 under work order # 967886. ** = -Replacement CRD Code of Construction Is ASME Section Ill 1974 Ed. W75 Ad. Code Case 1361 - 2 Reconciled to the original per PTEs PTE 88-013. PTE 88-396 and M93 -0 535. Replacement Capscrew Code of Construction is ASME Section III Class 1 1986 Ed. No Ad. Reconciled to the original Code of Construction per PTE M91-007 - 0320-01 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Authorization No. N/A Expiration Date N/A Signed ^ a ^- ISI Coordinator Date May 17. 2012 Owner or 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period 1-117114 to L1 R15 ,

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 NB 13411. ANi. IL 2146 IC Inspector' Signature National Board State Province and Endorsement s

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

1. Owner Exelon Generation Company (EGC) LLC Date 05/02/2012 (Name) 200 Exelon Way, Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 218` Rd. Marseilles II 61341 W.O. 1228683-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System RI (Reactor Core Isolation Cooling)

5. (a) Applicable Construction Code 1974 Edition No Addenda, Code Cases none (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) none

6. Identification of Com p ents Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. No. Bd. Identification Built Removed, or Stamped No. Installed Yes or No) 2"x2"x3/4" Consolidated HT# 356 N/A UTC#2024122 1997 Installed No Reducin g Tee Power Su pply

7. Description of Work : Class 2 Modification performed in accordance with EC# 375185

8. Tests Conducted: Hyd rostatic I I Pneuma tic I I Normal Onarat ino Pras ,a ira I Y I Pxamnt I I nfk.. 1*

Pressure *=psig Test Temp. _Deg. F

9. Remarks. *- Surface Exams performed on completed Socket Welds, results documented on NDE report #12-594

- - VT-2 performed under Static Head Pressure results documented on VT report # E12-220. Reducing Tee Cat. ID

47117 procured with documentation under Quality Receipt Inspection Package #L98-01038 (Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp none Certificate of Authorization No. AN/A .Expiration Date N/A Signed Mark Bosnich / R/R Coordinator Date May 2nd . 2012 .

Owner or Owner's Desnee, 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period ti IZf4 to i-1R-15 ,

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 1-341114,4)1 ( :ElaI414. _r C Inspector's Signature National Board, State, Province, and Endorsements

^^11^^11 Date ,i Z ..s , Q 9() .,Z

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

1. Owner Exelon Generation Company (EGC) LLC Date 05/02/2012 (Name) 200 Exelon Way, Kenneth Square, PA.. 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21" Rd. Marseilles, II. 61341 W.O. # 1317901-02 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System SF (Suppression Pool Cleanup)

5. (a) Applicable Construction Code 1974 Edition No Addenda, Code Cases none (b) Applicable Edition of Section XI Used for Repair/Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) none

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. No. Bd. Identification Built Removed, or Stamped No. Installed Yes or No 12 Studs *

N/A 1SF01A-14" Removed No 12 Studs Nova HT# N/A UTC# 2907990 2012 Installed No 3020888 24 Nuts *

N/A 1SF01A- 14"

Removed No 24 Nuts Nova HT# N/A UTC# 2873895 2010 Installed No 3012027

7. Description of Work : Cl ass 2 Replacement. * = per N-5 or NIS-2 Code Data Report on file at LaSa lle Station

8. Tests Conducted: Hyd rostatic I I Pneumatic I I Normal Onera tina Pres sure I I FYemnt I I nthar w net Pressure WA psig Test Temp. N/A Deg. F

9. Remarks. Replaced existing studs and nuts to allow for the use of flat washers on piping flange. Code of Construction for replacement rod is ASME Sect. III, Cl. 1, 1989 Ed. thru 1989 Ad. Reconciled Per Part Eval. 26252.

Threaded Rod Cat. I.D. 16933-1 procured with documentation under Quality Receipt Inspection Package # 170471 Nuts Cat. I.D. 1394888-1 procured with documentation under Quality Receipt Inspection Package # 170109 (Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp none Certificate of Authorization No. __________________________Expiration Date N/A Signed Mark Bosnich / R/R Coordinator Date May 2nd. , 2012 Owner or Owner's DeWl{tnee. rritle CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors andethe State or Province pf i Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of c;onnecti ut ave Inspected the co o ents described in this owner's Report during the period is poi. to r ^¢t3 and state tha to the best of my k ow edge 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 or is emptay r shall be liable in any manner for any personal injury or property damage or a loss of any kind a isin or r11 nected with this inspection.

r -1 I If-- !

c d Commissions -1U 1(499- J Inspector's Signature National Board, State, Province, and Endorsements Date Z yk^CA

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

1. Owner Exelon Generation Company (EGC) LLC Date 05/02/2012 (Name) 200 Exelon Way. Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21st Rd. Marseilles II 61341 W.O. # 1331419-02 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System SF (Suppression Pool Cleanup)

5. (a) Applicable Construction Code 1974 Edition No Addenda, Code Cases none (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) none

6. Identification of Com p ents Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. No. Bd. Identification Built Removed, or Stamped No. Installed Yes or No) 12 Studs *

WA 1 SF22A-14"

Removed No 12 Studs Nova HT# N/A UTC# 2907990 2012 Installed No 3020888 24 Nuts *

N/A 1 SF22A-14"

Removed No 24 Nuts Nova HT# N/A UTC# 2873895 2010 Installed No 3012027

7. Description of Work : Cl ass 2 Replacement, * = per N-5 or NIS-2 Code Data Report on file at LaSalle Station

8. Tests Conducted: Hydrostatic I I Pneumatic I_I Normal Operating Pressure I I Exempt 1_I Other INonel Pressure N/A psig Test Temp. N/A Deg. F

9. Remarks. Replaced existing studs and nuts to allow for the use of flat washers on piping flange. Code of Construction for replacement rod is ASME Sect. III. Cl. 1, 1989 Ed. thru 1989 Ad. Reconciled per Part Eval. 26252.

Threaded Rod Cat. I.D. 16933-1 procured with documentation under Quality Receipt Inspection Package # 170471 Nuts Cat. I.D. 1394888-1 procured with documentation under Quality Receipt Inspection Package # 170109 (Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp none Certificate of Authorization No. Expiration Date N/A Signed Mark Bosnich I R/R Coordinator Date May 2nd . 2012 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 or Provinc of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connec ticu have inspected the c nents described in this Owner's Report during the period

` 5" 1 7% o to S ake th at to the best of my n ledge and belief, the Ownerts has performed examinations and taken corrective measures described in this Owner's Report in accordance with wi 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 examinat i ons and corrective measures described in this Owner's Report. Furthermore, neither the Inspector /-n or his empl er shall be liable in any manner for any personal injury or property damage or a loss of any kind arisi om or onnected with this insoection_

Commissions &) 41 (J r t ("

National Board, State, Province, and Endorsements

FORM NIS-2 OWNER'S REPORT FOR REPAIR /REPLACEMENT ACTIVITY As Required by the Provisions of ASME Code Section XI Owner Exelon Generation Company (EGC) LLC Date 05/02/2012 (Name) 200 Exelon Way. Kenneth Square. PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21" Rd. Marseilles. II. 61341 W.O. # 1331420-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System HP (High Pressure Core Spray)

5. (a) Applicable Construction Code 1974 Edition No Addenda, Code Cases none (b) Applicable Edition of Section XI Used for Repair/Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) none

6. Identification of Com p ents Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. No. Bd. Identification Built Removed, or Stamped No. Installed (Yes or No) 8 Studs *

N/A 1 HP22A-3"

Removed No 8 Studs Nova HT# N/A UTC# 2812083 2008 Installed No 245182

7. Descr iption of Work : Class 2 Replacement, * = per N-5 or NIS-2 Code Data Report on file at LaSalle Station Tests Conducted: Hydrostatic I I Pneumatic I_I Normal Operating Pressure I I Exempt I_I Other INonel Pressure N/A psig Test Temp. N/A Deg. F

9. Remarks. Replacement rod procured to ASME Sect. III Cl. 1 1989 Ed. thru 1989 Ad. Reconciled under Parts Eval.

26252. Threaded Rod Cat I.D. 16824 -1 procured with documentation under Quality Receipt Inspection Package #

136793 (Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp none Certificate of Authorization No. Expiration Date N/A Signed Mark Bosnich / 111 1 R/R Coordinator Date May 2nd . 2012 .

Owner or Owner's D ignee, Title CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors a d he State or Province p f Ilinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticu _ h ve*ins^pected the c.o go tents dscribed in this Owner's Report during the period to and state ha to the best of my owl ge 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 examination corrective measures described in this Owner's Report. Furthermore, neither the Inspector n his m lover hal a liable in any manner for any personal injury or property damage or a loss of any kind ariging fro r copec d with this inspection. .. - _ g ,.-F i Commissions i u l` ' ^) ' °^

Inso6ctor's Signature National Board, State, Province, and Endorsements

`^c^^Ins Date t `_

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

1. Owner Exelon Generation Company (EGC) LLC Date 05/02/2012 (Name) 200 Exelon Way. Kenneth Square, PA.. 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 2151 Rd. Marseilles. 11. 61341 W.O. # 1331692-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. WA Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System SA (Service Air)

5. (a) Applicable Construction Code 1974 Edition No Addenda, Code Cases (b) Applicable Edition of Section XI Used for Repair/Replacement Activity -2001 none Ed., 2003 Ad.

(c) Applicable Section XI Code Case(s) none

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. No. Bd. Identification Built Removed, or Stamped No. Installed (Yes or No) 4 Studs

N/A 1 SA38A-3"

Removed No 4Studs Nova Trace# N/A UTC# 2854333 2010 Installed No 3Z1 1

7. Description of Work : Cl ass 2 Replacement, * = per N-5 or NIS-2 Code Data Re port on file at LaS alle Station

8. Tests Conducted: Hydrostatic I I Pneumatic 1_I Normal Operating Pressure I -j Exempt 1_I Other INonel Pressure N/A psig Test Temp. WA Deg. F

9. Remarks. Like for Like replacement. Threaded rod Cat. ID # 37092 -1 procured with documentation under Quality Receipt Inspection Package # 151532 (Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp none Certificate of Authorization No. Expiration Date N/A Signed Mark Bosnich/. R/R Coordinator Date May 2nd . 2012 .

Owner or Owner's tdsigneej 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R14 to 1-11115 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.

ih1 Commissions 13411 ANI IL 2146 IC Inspectors Signature National Board, State, Province, and Endorsements Date -a U, vl'

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

1. Owner Exelon Generation Company (EGC) LLC Date 05/07/2012 (Name) 200 Exelon Way, Kenneth Square. PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 218` Rd. Marseilles 11. 61341 W.O. # 1335208 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System RH (Residual Heat Removal)

5. (a) Applicable Construction Code 1974 Edition S75 Addenda, Code Cases none (b) Applicable Edition of Section X1 Used for Repair /Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) none

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. No. Bd. Identification Built Removed, or Stamped No. Installed (Yes or No) 4"x6" Relief Valve Crosby N60739

1 E12-F036A

Removed 0005 4"x6" Relief Valve Crosby N60739 N/A UTC# 2771127 2006 Installed Yes 0007

7. Descr iption of Work : Cl ass 2 Replace ment, * = per N-5 or NIS-2 Code Data Rep ort on file at LaSa lle Station

8. Tests Conducted: Hydrostatic I 1 Pneumatic 1_I Normal Operating Pressure 1 I Exempt I_I Other 1 1 Pressure **,psig Test Temp. N/A Deg. F

9. Remarks. Like for Like Replacement - replacement Relief Valve procured with documentation under Quality Receipt Inspection Package # 122470. ** VT -2 was performed under statIc head pressure and results documented on Report # E12-193 (Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp none Certificate of Authorization No. Expiration Date N/A Signed Mark Bosnich / R/R Coordinator Date May 7th 2012 .

Owner or Owner's Desf nee, !tle 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 The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period

/-I/2/q to J.J /S ,

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 X1.

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 ^3^/^/A^3/ ^^ /`/c _T Inspector's Signature National Board, State, Province, and Endorsements Date Ole-..22 /v, 2 c)/2

Q.C.-44C-1 Sheet 1 of 2 FORM NV-1 FOR SAFETY AND SAFETY RELIEF VALVES As required by the Provisions of the ASME Code Rules DATA REPORT

1. Manufactured By Anderson Greenwood Crosby, 43 Kendrick St., Wrentham, MA 02093 Name and Address .

Model No. 7B-25-TD-WR Order No. G048450000 Contract Date 08/30/06 National Board No.

2. Manufactured For EXELON GENERATION Order No.386-11813 REV 001 Name and Address

3. Owner EXELON GENERATION Name and Address

4. Location of Plant LASALLE COUNTY STA. UNITS 1&2

5. Valve Identification SPARE Serial No. N60739-00-0007 Drawing No. DS-C-60739 REV. D Type SAFETY RELIEF Orifice Size 2.504 Pipe Size --- Inlet 4 Outlet 6 Safety, Safety Relief, Pilot, Power Actuated Inch Inch Inch

6. Set Pressure (PSIG) 88 140 ° F Rated Temperature Stamped Capacity 670 GPM WATER 70DEG.F @ 10% %Overpressure `Blowdown(psig) 10%

Hydrostatic Test (PSIG) Inlet 132 Complete Valve 100

7. The material, design, construction and workmanship comply with ASME Code,Section III.

Class 2 Edition 1974 Addenda Date SUMMER 1975 Case No. N/A Pressure Containing or Pressure Retaining Components Serial No. Material Specification

a. Castings Identification Including Type or Grade Body N91876-35-0007 ASME SA216 GR. WCB Bonnet N91879-33-0007 ASME SA216 GR. WCB

b. Bar Stock and Forgings Support Rods Nozzle N91882-35-0010 ASME SA479 TYPE 304 Disc (Insert) N91877-37-0011 ASME SA479 TYPE 304 N91878-45-0053 Spring Washers N91878-45-0051 ASME SA479 TYPE 410 Adjusting Bolt N90706-43-0027 ASME SA193 GR. B6 Spindle N90380-37-0046 ASME SA193 OR. B6

.L (J (J -x Q.C.-44C-1 Form NV-I (Back) Certificate Holder 's Serial No. N60739-00-0007 Sheet 2 of 2 Serial No. Material Specification Identification Including Type or Grade

c. Spring NX3154-0007 ASTM A689

d. Bolting -- M

e. Other Parts such as Pilot Components BONNET STUD N96237 ASME SA193 GR. B7 BONNET NUT N95933 ASME SA194 GR. 2H We certify that the statements made in this report are correct.

Anderson Greenwood Crosby Date go DEC 20 0lo Signed Wrentham, MA By ^!^ tZ Manufacturer Certificate of Authorization No. N-1878 Expires 30-Sep 47 Date CERTIFICATE OF SHOP 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 MA and employed by HSB - CT have inspected the equipment described in this Data Report on

/Z - / 9 - 2006 and state that to the best of my knowledge and belief, the Manufacturer has constructed this equipment in accordance with the applicable Subsections of ASME Section III.

By signing this certificate, neither the Inspector nor his employer makes any warranty , expressed or implied, concerning the equipment described in this Data 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.

Date 2:EL A O , 200 6 Commissions MA-1420 A, N, I tor) (National Board, State, Province and No.)

l.12-^

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

1. Owner Exelon Generation Company (EGC) LLC Date, 05/31/2012 (Name) 200 Exelon Way. Kenneth Square, PA.. 19348 Sheet_ 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21" Rd. Marseilles. 11. 61341 W.O. # 1347154 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System LP (Low Pressure Core Spray)

5. (a) Applicable Construction Code 1974 Edition S75 Addenda, Code Cases none (b) Applicable Edition of Section XI Used for Repair/Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) none

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. No. Bd. Identification Built Removed, or Stamped No. Installed (Yes or No 3"x4" Relief Valve Crosby N60742 1E21 -F018

Removed 001 3"x4" Relief Valve Crosby N60742 N/A UTC# 2804619 Installed Yes 003 3/4" Studs Nova HT# 85098 N/A UTC# 2840146 1999 Installed No 5/8" Studs Nova HT# N/A UTC# 2884297 2011 Installed No 10051390

7. Description of Work : Cl ass 2 Replacement. * = per N-5 or NIS -2 Code Data Report on file at LaSalle Station

8. Tests Conducted: Hydrostatic I 1 Pneumatic I_I Normal Operating Pressure I X t Exempt I_i Other I I Pressure 293 pslg Test Temp. Ambient Deg. F

9. Remarks. Like for Like Replacement of Relief Valve (Cat. I.D. 11631 -1) procured with documentat ion under Quality Receipt Inspection package # 80073. 3/4" Threaded Rod (Cat. I.D. 37094-1) procured with documentat ion under Quality Receipt Inspection package # 145867. 5/8" Threaded Rod (Cat.I.D. 16605-1) procured with documentation under Quality Receipt Inspection package # 162433. Code Reconciliation for Threaded Rod performed under Parts Evaluation # 54939. VT -2 documented on Report E12-192 (Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requiremen ts of the ASME Code,Section XI.

Type Code Symbol Stamp none Certificate of Authorization No. JIM Expiration Date N/A Signed Mark Bosnich / R/R Coordinator Date May 31st 2012 .

Owner or Owner' s D gnee, ( tie 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 The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described In this Owner's Report during the period

_L1 R14 to _L1 R15 and state that to the best of my knowledge and belief, the Owner has performed examinatio ns 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 !W or connected with this inspection.

Commissions 13411 ANI, IL2146 IC National Board, State, Province, and Endorsements

FOM NV-1 FOR MFETY AND SAFM BELEM VAL. V S As rc*dmd by the Prwisioms of the ASME Cade Rules G wrood Cress y, 43 Kendrick St., Wrentham, MA 02093

. :tla. ;!J-36-TD Order Ma. L108640000 Contract Dat 0311101 National Boar No.

N3= and Address E ELON GENLF.RAT1CN COMPANY

':a' LASALLE STATION S PARE in1 o. N6C742 00.t 03 Otaw rig ^*io. DS-C 10742 iRV.w Serld No. maww S it T $eatim larhtdin6 Type or Grade N918$9-32.0003 ASME SA216 GR. WCR N91891 -32.OOfl ASME SA216 GR.WCB N9c633-46-OMI N91$90.9541016 N91342-464300 N91342- ASME SA479 TYPE 410 N90562-43-0029 ASME 5*193 GR.B6 N90$64.4& 0030 ASME SA19. GR.B6

Q.C.. -l Form NV- I (Back) Certificate Holder's Serial No. N-4607414104)003 _ T. 4 Serial No.

Identified t Wh4ft ispc or

c. Spring NX3l45-1003 1 CONEL X'7.51 cwadc

d. Bolting

e. Other Parts such as Pilot Components BONNET STUD N95995 ASME SA. 93 GK 87 BONNET NUT N95987 ASME SA 194 GR 2H We certify that the statements made in this report are correct.

Anderson Greenwood Crosby Date Z S - MA' 20 Qi Signed Wrentham. MA By `may Manufacnocr Certificate of Authorization No. N-1878 Ex --es 5z_-. , 2ijf Duie 0AAT P1 AT OF W QE I SP s IO 1, the undersigned, holding a valid commission issued by toe National Board of lvt-:s and Yreslow Vr%l l State or Province of Mass. And employed by Factory ,Mutual Insurance Co.. lolu>>

have inspected the equipment described in this Data Report on

.. 20 Q.? and sato t to tt ? my knowledge and belief, the Manufacturer .ructcd ttsis er{stiproestt in accxxdat :e

da a, Subsections of ASME Section 111.

By signing this certificate, neither the Inspector nor his emaloyer makes any wwran y . exi..re at concerning the equipment described in this Data Report. Furthermore, neither the Inspector mar his enVipyer shall be liable in any manner for any personal injury or preperty damage or a toss of any kind aram from at connected with this inspection.

-d 20 Commissions In4- /y'/?

(Inspector) (National Board. State. Province andNo.)

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

1. Owner Exelon Generation Company (EGC) LLC Date 04/20/2012 (Name) 200 Exelon Way, Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 218t Rd. Marseilles II. 61341 W.O. # 01425172-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp WA (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (RH) Residual Heat Removal

5. (a) Applicable Construction Code 1973 Edition Summer 74 Addenda, Code Cases none (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) none

6. Identification of Com p ents Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. No. Bd. Identification Built Removed, or Stamped No. Installed (Yes or No)

PSA-10 Pacific 2896 N/A 1RH04-1027S

Removed Mechanical Scientific Snubber PSA-10 Pacific 8136 N/A UTC #2772356 1980 Installed Yes Mechanical Scientific Snubber

7. Description of Work : Cl ass 2 Replacement, * = per N-5 or NIS-2 Code Data Report on file at LaSa lle Station Tests Conducted: Hydrostatic I I Pneumatic I_I Normal Operating Pressure I I Exempt I_I Other I X I Pressure N/A psig Test Temp. NIA Deg. F

9. Remarks. Like for Like Replacement - PSA-10 Snubber procured with documentation under Receipt Inspection Package # 141353 (Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp none Certificate of Authorization No. Expiration Date N/A Signed Mark Bosnich / j R/R Coordinator Date April 20th 2012.

Owner or Owner' esign e, 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 or Province of Illinois and employed by The Hartford Steam Boiler Ins q. & I Ps. Co. of Connecticut have inspected the co po ents scribed in this Owner's Report during the period i 'a o to a6 'Z,ol 11 and state that to the best of my k owl dge 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 emp loyer shall be liable in any manner for any personal injury or property damage or a loss of any kind a fr r connected with this inspection.

(cl A N, L J 11 a Commissions Inspector's Si ature National Board, State, Province, and Endorsements Date 5 A &\ L

FORM NF-1 NPT CERTIFICATE HOLDERS' DATA REPORT FOR COMPONENT SUPPORTS As Required by the Provisions of the ASME Code Rules,Section III, Division 1

t. Manufactured by Pacific Scientific 1346 S. State College Blvd. Anaheim, Ca. 92803.

(Name and address of NPT Certificate Holder)

NPS Industries, Inc. One Hanlon Plaza 6th Floor Secaucus, New J ersey 07094

2. Manufacturer for (Name and address of purchaser or owner)

U wn

3. Location of Installation

4. Identification (a) (b) (c) (d) (e) (f) (g) (h)

Component Canadian Applicable Stress Report Type of Support Registration Drawings with or Load Capa- Component Nat'l Board

1. D. No. No. Last Rev. & Date city Data Sheet Support Class No. Year Built s

(1) 8127-8146 None 1841103-07 H DR-1352-Rev. B Linear 1 None 1980 (2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

5. Remarks: Built tc NPS Industries Spec. NPSS-42578 CERTIFICATE OF COMPLIANCE We certify that the statements made in this report are correct and that these components supports conform to the rules of construction of the ASME Code Nu^lear Power Plant Components, Section 111, Division t, Edition 1977 , Addenda << ^ '79 Code Case No. 444 (Date)

Lf3.C Scientific by- 1(L (NPT Certificate Holder)

Our ASME Certificate of Authorization No. 1198 to use the Cariponent Supports (NPT)

Symbol expires Aug. 4, 1981 (Date)

CERTIFICATION OF DESIGN Pacific Scientific Design Information on File at Stress Report or Load Capacity Data Sheets on File at:

Pacific Scientific 1 Per 3256 Design Specifications Certified by (1) Eugene P. Burke PE State New York Reg. No. 50936 Stress Analysis Report or Load Capacity Data Sheets Certified by (1) Leo E. Ay PE State California Reg. No. 13533 (1) Litt name oniy, signature not required.

Supplemental sheets in form of lists, sketches or drawings may be used provided (1) size is 8'/1 in., (2) information in items 1.2.

4c, 4g on this Data Report is included on each sheet, and (3) each sheet is numbered and number of sheets is recorded at top of this form.

(10/77) This form (E00075) may be obtained from the Order Dept., ASME, 345 E. 47th St., New York, N.Y. 10017

FORM NF-1 (Back)

CERTIFICATE OF SHOP 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 California and employed by HSBI&I Co. - of Kar-ffold CI'

-r^ s 3

have inspected the component supports described in this Data Report on 19 and state that to the best of my knowledge and belief the NPT Certificate Holder has constructed these component supports in accordance with the ASME Code for Nuclear Power Plant Components.

By signing this certificate, neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the component supports described in this Data 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.

Date .

Signed L / ^LG"'^- fr^t7 i1 Commissions _ C- -I4 12-$27 (Nat'l 8d., State, Prov., and No.)

CERTIFICATION OF FIELD 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 and employed by of have compared the statements in this Data Report with the described component supports and state that the parts referred to as data items , not included in the certificate of shop inspection, have been inspected by me and that to the best of my knowledge and belief the NPT Certificate Holder has constructed these component supports in accord-ance with the ASME Code for Nuclear Power Plant Components.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the component supports described in this Data Report. Furthermore. neither the inspector nor his employer shall be liable in any manner for any personal injury or property damage or a toss of any kind arising from or connected with this inspection.

Date Signed Commissions (Nat'l Bd., State, Prov., and No.)

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

1. Owner Exelon Generation Company (EGC) LLC Date 05/21/2012 (Name) 200 Exelon Way, Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21s` Rd. Marseilles, II. 61341 W.O. # 1425593 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System RH (Residual Heat Removal)

5. (a) Applicable Construction Code B31.1 Edition no Addenda, Code Cases none (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed., 2003 Ad.

(c) Applicable Section XI Code Case(s) none

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. No. Bd. Identification Built Removed, or Stamped No. Installed (Yes or No)

PSA-35 Pacific **missing

1 RH04-1028S

Removed Mechanical Scientific nameplate Snubber PSA-35 Pacific 12839 N/A UTC # 2712712 1987 Installed Yes Mechanical Scientific Snubber

7. Description of Work : Cl ass 2 Replacement, * = per N-5 or NIS -2 Code Data Report on file at LaSa lle Station

8. Tests Conducted: Hydrostatic I I Pneumatic I I Normal Onerat inn PrPCCUrP I I PYamnt I I nth- I V I

Pressure N/A psig Test Temp. N/A Deg. F

9. Remarks. Like for like replacement, replacement snubber procured with documentation under Quality Receipt Inspection Package #168062. PMT VT - 3 performed and results documented of Report # E12-004 ** No Data plate attached when removed from plant, established unique traceability to S/N 3593 using Basic PSA Traceability Tabulation Report # IT-534. Scribed S/ N 3593 on snubber housing under the observation of the ANII (Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp none Certificate of Authorization No. N/A-i -Expiration Date N/A Signed Mark Bosnich ! lilt R/R Coordinator Date May 21st 2012 Owner or Owner's Designee, Titl 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 The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R14 to L11315 ,

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 13411 A N I IL. 2146 1 C In'spector's Signature National Board, State, Province, and Endorsements Date ' 5 ' 2 / J. 2 1 2

rvnrn par- s uar 1 vcrt 11r11.44 t t F1ULUttis UA fA RLPORT FOR COMPO NENT SUPPORTS",

As Required by the Provisions of the ASME Code Rules,Section III, Division 1

Paci i Scientifiic Kin Tech Division

1. Manufactured by 1346 South State College lv_dh,_An_ ahej :Q=d 280 Bechtel Power Corp. (Name and address of NPT Certificate Holder)

Limeric

2. Manufactur k Generating Station,P.O. Box "An, Sanatoga Branch Pottsto er for wn, PA 19464 East bank of the S^c^fiuyl i^ tr^i v° er rin r or tg(rnery County, Location of Installation PA approx. 1.8 mi. from Pottstown borough line and Limerick Townshir 3.

approx. 3.7 mi_, f-rcm

4. Identification the center of Pottstown.

(a) (b) (c) (d) (e) (f) (g) (h)

Component Canadian Applicable Stress Report Type of Support Registration Drawings with or Load Capa- Component Nat'l Board I. D. No. No. Last Rev, & Date city Data Sheet Support Class No. Year Built (1) 12822 None 1801112-11-F DR-1417 Rev ;0 Linear 1 None 1987 (2) thru (3)_ _12857__ " " " " 1987 (4)

(5)

(6)

(7)

(8)

(9)

(10)

5. Remarks:

r CERTIFICATE OF COMPLIANCE We certify that the statements made in this report are correct and that these components supports conform to the. rules of construction of the ASME Code for Nuclear Power Plant Components.Section III, Division 1, Edition 1977 , Addenda Winter 177 Code Cash No. 1644-6 , ,,, (Oats)

Date_ a0 - Signed Pacific Scientific Co, by. f (NPT Certificate Holder)

Our ASME Certificate of Authorization No. " rrn N-1 198 to use the (NPT)

Aug. 4, 1987 Symbol expires (Date)

CERTIFICATION OF DESIGN Design Information on File at Pacific Scientific Stress Report or Load Capacity Data Sheets on File at:

Pac ific Scientific Filed Per NCA 3256 Design Specificat i ons Certified by (1) _ rge M. Dyer PE State California Reg. No. 17813 (1)

Req.No. 18864 (2) e(2) Mark W. Schletz PE State California Stress Analysis Report or Load Capacity Data Sheets Certified by (1)

California Leo E. Ay PE State Reg. No.

13533 (1) List name only, signature not required.

upplemental sheets in form of lists, sketches or drawings may be used provided (1) size is 81i1 in.. (2) information in items 1. 2, 4c. 49 on this Data Report is included on each sheet, and (3) each sheet is numbere d and number of sheets is recorded at top of this form.

(10/77) This form (E00075) may be obtained from the Order Dept.. ASME,345 E.47th St.,

New York, N.Y. 10017

vU M NF-1 (Back)

CERTIFICATE OF SHOP 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 Pennsylvania and employed by HSBI&I Co. of Hartford, CT have inspected the component supports described i n this Data Report r on 19 - and state that to the best of my knowledge and belief the NPT Certificate Holder has constructed these component supports in accordance with she ASME Code-for Nuclear Power Plant Components.

By signing this certificate, neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the component supports described in this Data 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.

Date Signed Commissions C .g /6 r^^st^.y s3/o2c?-

(Nat'l Bd., State, Prow., and No.)

CERTIFICATION OF FIELD 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 and employed by of have compared the statements in this Data Report with the described compone nt supports and state that the parts referred to as data items , not included in the certificate of shop inspection, have been inspected by me and that to the best of my knowledge and belief the NPT Certificate Holder has constructed these component supports in accord-ance with the ASME Code for Nuclear Power Plant Components.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the component supports described in this Data 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.

Date Signed Commissions (Nat'l Bd , State, Prow,, and No.)

Ath

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

1. Owner Exelon Generation Company (EGC) LLC Date 11/18/2011 (Name) 200 Exelon Way, Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 1 Name 2601 N. 21" Rd. Marseilles, II. 61341 W.O. # 1434595 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System

5. (a) Applicable Construction Code Sect III 19 1974 Edition No Addenda, Code Cases None (b) Applicable Edition of Section XI Used for Repair/Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Repaired ASME Code Component Mfr. Ser. Bd. Identification Built Replaced, or Stamped No. No. Rep lacement (Yes or No)

Heavy Hex Nuts Morrison

N/A Replaced N/A (8)'/2 x13 Heavy Hex Nuts Nova Machine Cat. ID. N/A UTC# 2804425 2011 Replacement N/A 8 '/2 x 13 Products 1394856 Threaded Rod Morrison

N/A

Replaced N/A 1/2X13 Threaded Rod Nova Machine Ht. No. N/A UTC# 2893397 2011 Replacement N/A 1/2X13 Products 7800104 1 E22-0003 Crane Demin g N/A

Replaced N/A 1 E22-0003 HydroAire SIN UTC# 2838519 2009 Replacement WA I NDCOOI216 N/A

7. Description of Work Class 2 Replacement. * = Per N-5 Code Data Re port on file at LaSalle Cou nty Station

8. Tests Conducted: Hydrostatic 1 I Pneumatic I_I Normal Operating Pressure I X I Exempt I_I Other l_

Pressure: 45 psig Test Temp. MA Deg. F

9. Remarks Replacement Code of Construction is ASME Sect. Ill. CL. 31974 Ed.. S75 Add. Ref. EC 374742 for Acceptance to Class 2 Requirements (Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Authorization No. N/A Expiration Date N/A Signed- r--^=--- ISI Engineer Date November 18 2011 Owner or Owne 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1 R13 to L1 R14 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 NB 13411 IL 2146 Inspector's igna ure National Board, State, Province, and Endorsements Date' r' L-4 r' lH _2011

FORM NIS- 2 OWNER'S REPORT FOR REPAIRJREPLACEMENT ACTIVITY As Required by the Provisions of ASME Code Section XI

1. Owner Exelon Generation Company (EGC) LLC Date 2/2/2012 (Name) 200 Exelon Way. Kenneth Square, PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 1 Name 2601 N. 21St Rd. Marseilles, II. 61341 W.O. # 1492386 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System

5. (a) Applicable Construction Code Sect III 19 1971 Edition 73 Addenda, Code Cases None (b) Applicable Edition of Section XI Used for Repair/ Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Repaired ASME Code Component Mfr. Ser. Bd. Identification Built Replaced, or Stamped No. No. Rep lacement (Yes or No) 1 E22-0003 Crane Demin g 2 N/A * >n Rep laced N/A 1 E22-0003 Crane Deming SIN N/A UTC# 2900220 ** Replacement N/A N DC001003

7. Description of Work Cla ss 2 Replacement. * = Per N-5 Code Data Report on file at LaSalle County Station Tests Conducted: Hydrostatic I I Pneumatic 1_I Normal Operating Pressure I X I Exempt II Other 1_I Pressure:68.5 psig Test Temp. N/A Deg. F

9. Remarks **= Replacement Code of Construction is ASME Sect. III CL. 2 1971 Ed., S73Add, Rebuilt Der WO#1 455261 -01 (Applicable Manufacturer's Data Report to be Attached )

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp NONE Certificate of Aut orization No. N/A Expiration Date N/A Signed ISI En gineer Date February 2 2012 Owner or Owner's Dpsi nee, 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1R13 to L1R14 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.

t f Commissions NB 13411 IL 2146 Inspector's Signature National Board, State, Province, and Endorsements ate 0ZI1 2012

FORM NIS-2 OWNER'S REPORT FOR REPAIR /REPLACEMENT ACTIVITY As Required by the Provisions of ASME Code Section XI Owner 1. Exelon Generation Company (EGC) LLC Date 02/24/2012 (Name) 200 Exelon Way, Kennet Square, PA.. 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21" Rd. Marseilles, ii. 61341 W.O. # 1514545 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. WA Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (E51) Reactor Core Isolation Cooling

5. (a) Applicable Construction Code Sect III 19 74 E dition S76 Addenda, Code Cases None (b) Applicable Edition of Section XI Used for Repair /Replacement Activity-2001 Ed.. 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Com ponents Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No Valve Disc Anderson N/A 1E51 -F082 Removed YES Assembi Greenwood Valve Disc Tyco UTC# N/A IE51 -F082 1981 Installed YES Assembly 2018307

7. Description of Work Cla ss 2 Replacement. * = Per N- 5 Code Data Report on file at LaSalle County Station Tests Conducted: Hydrostatic I I Pneumatic I_I Normal Operating Pressure I X I Exempt I_I Other i_I Pressure 42.67 psig Test Temp. Ambient Deg. F

9. Remarks Replaced Valve Disc Assembly.

(Applicable Manufacturer's Data Report to be Attached )

- =Replacement Disc Code of Construction is ASME Section III Class 3 ,1974 Ed. S76 Ad. Reconciled to the original Per PTE L91 0374 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code, Section Xi.

Type Code Symbol Stamp NONE Certificate of Authorization No. N/A Expiration Date N/A Signed ISI En gineer Data 2012 Owner or Owner's D ee, 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 or Province of Illinois and employed by The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period L1 R13 to L1 R14 ,

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.

( 1,2 Commissions NB 13411 ANI IL 2146 Inspector's S ignature National Board, State, Province, and Endorsements Date ._-_ v 2012

FORM NIS-2 OWNER'S REPORT FOR REPAIR /REPLACEMENT ACTIVITY As Required by the Provisions of ASME Code Section XI Owner Exelon Generation Company EGC) LLC Date 02124/2012 (Name) 200 Exelon Way, Kennet Square. PA., 19348 Sheet 1 of 1 Address

2. Plant LaSalle County Nuclear Station Unit 01 Name 2601 N. 21" Rd. Marseilles, It. 61341 W.O. # 1514546 Address Repair Organization, P.O. No., Job No., etc.

Work 3. Performed by Mechanical Maintenance Type Code Symbol Stamp N/A (Name) Authorization No. N/A Mechanical Maintenance Expiration Date N/A (Address)

4. Identification of System (E51) Reactor Core Isolation Cooling

5. (a) Applicable Construction Code Sect i1 19 74 Edition S76 Addenda, Code Cases None (b) Applicable Edition of Section X1 Used for Repair/Replacement Activity-2001 Ed., 2003 Ad.

(c) Applicable Section XI Code Case(s) None

6. Identification of Components Name of Name of Mfrs. Nat'l Other Year Corrected ASME Code Component Mfr. Ser. Bd. Identification Built Removed, or Stamped No. No. Installed (Yes or No)

Valve Disc Anderson N/A 1E51 -F084 Removed YES Assembl y Greenwood Valve Disc Tyco UTC# N/A 1 E51-F084 1981 Installed YES Assembl y 2018307

7. Description of Work Cl ass 2 Replacement. * = Per N-5 Code Data Report on file at LaSalle Cou nty Station

8. Tests Conducted: Hydrostatic I I Pneumatic I_I Normal Operating Pressure I X I Exempt I_I Other 1_I Pressure _ 2psig Test Temp. Ambient Deg. F

9. Remarks Replaced Valve Disc Assembly.

(Applicable Manufacturer's Data Report to be Attached )

- = Replacement Disc Code of Construction is ASME Section III, Class 3, 1974 Ed. S76 Ad. Reconciled to the original per PTE L91-06-0374 on file at LaSalle Station.

CERTIFICATION OF COMPLIANCE I certify that the statements made in the report are correct and that this conforms to the requirements of the ASME Code, Section Xi.

Type Code Symbol Stamp NONE 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 The Hartford Steam Boiler Insp. & Ins. Co. of Connecticut have inspected the components described in this Owner's Report during the period 1-117113 to L1R14 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.

,22-2Commissions NB 13411, ANI IL 2146 Inspector's Signature National Board, State, Province, and Endorsements 2012

RA12-018, Post-Outage 90-Day Inservice Inspection (ISI) Summary Report

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RA12-018, Post-Outage 90-Day Inservice Inspection (ISI) Summary Report

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