ML070180612

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Form NIS-2 Owner'S Report for Repair/Replacement Activity as Required by the Provisions of the ASME Code Section XI
ML070180612
Person / Time
Site: Byron Constellation icon.png
Issue date: 09/18/2006
From:
Exelon Nuclear
To:
Office of Nuclear Reactor Regulation
References
99024446-01
Download: ML070180612 (158)
v • d • e


Text

DOCUMENT NO.: 4.1 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 9/18/06 Name 4300 WinfleId Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 99024446-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 36400 S. Essex Road, Wilmington, IL 60481 Expiration Date Not Applicable Address
4. Identification of System Chemical & Volume Control CV-
5. (a) Applicable Construction Code ASME Section III 1971 Edition, S72 Addenda, NONE Code Case (b) Applicable Edition of Section Xi Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (c)Section XI Code Case(s) NONE
6. Identification of Components ASME Corrected, Code

. National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Senal No. No. Identification Built RELIEF VALVE, N56897-O0-0038 N/A 1CV8120 1992 Removed YES VALVE&GAGE REUEF VALVE, VA&~5~GE N56897-O0-0018 N/A 1CV8120 1976 Installed YES

7. Description of Work REPLACE RELIEF VALVE FOR 1CV8120
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 18 psi Test Temp. 72 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

DOCUMENT NO.: 4.1 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 9/18/06 Name 4300 WinfleId Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 99024446-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 36400 S. Essex Road, Wilmington, IL 60481 Expiration Date Not Applicable Address
4. Identification of System Chemical & Volume Control CV-
5. (a) Applicable Construction Code ASME Section III 1971 Edition, S72 Addenda, NONE Code Case (b) Applicable Edition of Section Xi Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (c)Section XI Code Case(s) NONE
6. Identification of Components ASME Corrected, Code

. National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Senal No. No. Identification Built RELIEF VALVE, N56897-O0-0038 N/A 1CV8120 1992 Removed YES VALVE&GAGE REUEF VALVE, VA&~5~GE N56897-O0-0018 N/A 1CV8120 1976 Installed YES

7. Description of Work REPLACE RELIEF VALVE FOR 1CV8120
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 18 psi Test Temp. 72 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO# 99024446-01 Applicable Manufacturers Data Reports to be attahed CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of ~thorizationNo. Not Applicable Signed ~ ~S~~ ~ Date l~27I/f ,20 s

\1) (,~9~or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period

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

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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 thi~inspection.

________________________ Commissions ,//-J%qi Inspectors Signature National Board, State Province, and EndOrSements Date: I~it~ // ,20 ~

FORM NIS-2 OWNERS REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 05/18/05 Name 4300 Winfield Road, Warrenvllle, IL 60555 Sheet 1 of Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL 61010 Work Order No. 00437574-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL 61010 Expiration Date Not Applicable Address
4. Identification of System 1A DG DIESEL GENERATOR
5. (a) Applicable Construction Code Section III 1974 Edition, S176 Addenda, N/A Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89 (c)Section XI Code Cases used, N/A
6. Identification of Components Repaired or Replaced and Replacement Components ASME Repaired, Code National Replaced, Stamped Name of Name of Manufacturer Board Other Year or (Yes or No)

Component Manufacturer Serial No. No. Identification Built Replacement 3/4-10 Cooper Energy NIA N/A 1OGO1KA STUD Services 1978 REPLACED NO 3/4-lO Nova Machine HT: 223432 N/A CAT. lD# 37094 STUD Products Code: K495 IDGOIKA 2004 REPLACEMENT NO

7. Description of Work REPLACE 3/4-lO STUD WITH LONGER ONE FOR THREAD ENGAGEMENT.

ENGINE DRIVEN JACKET WATER PUMP SUCTION EXPANSION JOINT

8. Test Conducted: Hydrostatic El Pneumatic El Nominal Operating Pressure 0 N/A Other 0 Pressure ___________ psi Test Temp Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (I) size is 8Y2 in. x 11 in., (2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recordedat the top ofthis form.

FORM NIS.2 (Back)

9. Remarks WO# 00437574-01 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT conform to the rules of the ASME Code, Section Xl. repair or replacement Type Code Symbol Stamp Not Applicable Certificate of Auth rization~p. Not Applicable Signed ~ e47~~Q.~ Date ,20 ~

or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period to , and state that to the best of my knowledge and belief, the d~wnerhas ~ and taken corrective measures described in this Owners 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 Owners 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 /4~Z-/1(9 Inspectors Signature National Board, State Province, and Endorsements Date: 0Z. ,20 ~~f*

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

1. Owner Exelon Nuclear Date _________________________

5/18/05 Name 4300 Winfield Rd. Warrenville, II. 60555 Sheet 1______ of I Address

2. Plant Byron Nuclear Power Station Unit _________________________

01 Name 4450 N. German Church Road, Byron, II. _____________________________________________

Work Order No. 00596632-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, II. Expiration Date Not Applicable Address
4. Identification of System [DG] DIESEL GENERATOR
5. (a) Applicable Construction Code Section III 1974 Edition, Sf75 Addenda,N/A Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89 (c) Applicable ASME Section XI Code Cases: NONE
6. Identification of Components Repaired or Replaced and Replacement Components National Repabsd, ASME Name of Nameof Manufacttyer Board Other Year Replaced, Code; Stamped Component Manufacturer Serial No. No. Identification Built or Replacement (Yes or No)

UPPER JW AMERICAN SIN:9-20003-06-1 ETN: IDGO1KA-X1 FLTG HEAD STANDARD 32693 1978 REPLACED YES UPPER JW ENERGY STEEL S/N:NPT31848-1 CAT ID 1406144 FLTG HEAD & SUPPLY CO. N/A ETN: IDGOIKA-X1 2005 REPLACEMENT YES UPPER JW AMERICAN S/N:9-20003-06-1 ETN: 1 DGO1 KA-X1 END CVR: FLTG STANDARD 32693 EAST END 1978 REPLACED YES UPPERJW CONSOLIDATED S/N: CAT ID 1390433 END CVR: FLTG POWER NBN33537-1 N/A ETN: IDGO1KA-X1 1979 REPLACEMENT NO UPPER JW AMERICAN S/N:9-20003-06-1 ETN: I DGOI KA-X1 END CVR: STA. STANDARD 32693 WEST END 1978 REPLACED NO UPPER JW CONSOLIDATED S/N: CAT ID 1390433 END CVR: STA. POWER NBN33537-2 N/A ETN: 1DGOIKA-Xl 1979 REPLACEMENT NO H~)

7. Description of Work REPLACE FLOATING CHANNEL HEAD AND END COVERS
8. Test Conducted: Hydrostatic El Pneumatic 0 Nominal Operating Pressure ~

Other J~ Pressure 6.7 psi Test Temp. 170 °F Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (I) size is 8-1/2 in. x II in.,

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

This form has been electronically generated.

FORM NIS-2 (Back)

  • ~* Remarks Work Order 00596632-01 CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this Replacement conforms to the rules of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed (f$?4-L Date 7/i~c ,20 0i CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by__HSB CT.

of Hartford, CT , / have inspe9ted)he components descrtbed Ifl this Owners Report during the period 427/5w to , and state that to the best of my knowledge and belief, the ~)~nerhas performed examinat1bnV~ndtaken corrective measures described in the Owners 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 Owners 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~iqd~risin om or nnected with this inspection.

Sqiaflse ln~ec~s Commissions N~iOnaao~o,St~ePmvtnce. ~1d et~eaner~s Date~9w~ ig ,20 ~

FORM NlS-2 OWNERS REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 5/18/05 Name 4300 Winfield Rd. Warrenville, II. 60555 Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, II. Work Order No. 00596747-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, II. Expiration Date Not Applicable Address
4. Identification of System [DG] DIESEL GENERATOR
5. (a) Applicable Construction Code Section III 1974 Edition, S/75 Addenda,N/A Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89 (c) Applicable ASME Section Xl Code Cases: None
6. Identification of Components Repaired or Replaced and Replacement Components National Repa~ed, ASME Name of Narneof Manufacturer Board Other Year Replaced, Code; Stamped Component Manufacturer Serial No. No. Identification Built or Replacement (Yes or No)

LOWER JW AMERICAN S/N:9-20003-07-1 ETN: 1DGOIKA-X2 FLTG HEAD STANDARD 32694 1978 REPLACED YES LOWER JW ENERGY STEEL SIN:NPT31848-2 CAT ID 1406144 FLTG HEAD & SUPPLY CO. N/A ETN: IDGOIKA-X2 2005 REPLACEMENT YES LOWER JW AMERICAN S/N:9-20003-07-1 ETN: IDGOIKA-X2 END CVR: FLTG STANDARD 32694 West End 1978 REPLACED NO LOWER JW ENERGY STEEL SIN: CAT ID 1390433 END CVR: FLTG & SUPPLY CO. NBN33533-1 N/A ETN: 1DGOIKA-X2 1979 REPLACEMENT NO LOWER JW AMERICAN S/N:9-20003-07-1 ETN: IDGO1KA-X2 END CVR: STA. STANDARD 32694 East End 1978 REPLACED NO LOWER JW ENERGY STEEL S/N: CAT ID 1390433 I

END CVR: STA. & SUPPLY CO. NBN33538-2 N/A ETN: 1DGOIKA-X2 1979 REPLACEMENT NO 6

JCS 7/~ .r ~f

7. Description of Work REPLACE 0-TATIONARY, FLOATING, CHANNEL HEADS AND END COVERS
8. Test Conducted: Hydrostatic 0 Pneumatic El Nominal Operating Pressure ~

Other 0 Pressure 6.7 psi Test Temp. 170 °F Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.

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

This form has been electronically generated.

FORM NIS-2 (Back)

Remarks Work Order 00596747-01 CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this Replacement conforms to the rules of the ASME Code,Section XI.

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

~erso~,

~ C~,-~L Date 7/Jg ,20___

CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by__HSB CT.

of Hartford, CT have inspeçtedjhe components described in this Owners Report during the period to 7/j~4~ ,and state that to the best of my knowledge and belief, the gwrfer has performed examinat~6ns~nd taken corrective measures described in the Owners 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 Owners Report. Furthermore, neither the Inspector nor his empIoyer~shall be liable in any manner for any personal injury or property damage or a loss of any kin~rj~ing fro or co ected with this inspection.

~a9/ C SQiUwe Commissions Hoes. ~a P,nelce. we Et~$ememe Date~9%k~/f ,20 ~yf

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

1. Owner Exelon Nuclear Date 05/19/05 Name 4300 Winfield Rd. Warrenville, IL 60555 Sheet 1 of I Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Rd. Byron, IL 61010 Work Order: 99157436-01 Address Repair Organization P.O., Job No., etc
3. Work Performed By Byron_Mechanical Maintenance Type Code Symbol Stamp Not Applicable 4450 N. German Church Rd. Byron, IL 61010 Authorization No. Not Applicable Address Expiration Date Not Applicable
4. Identification of System DIESEL GENERATOR [DG]
5. (a) Applicable Construction Code Section III 19 74 Edition, S/76 Addenda, N/A Code Case (b) Applicable Edition of Section Xl Utilized for Repairs or Replacements 19 89 (c)Section XI code Cases used, N/A
6. Identification of Components Repaired or Replaced and Replacement Components ASME Repaired, Code Name of Name of Manufacturer National Other Year Replaced, or Stamped Component Manufacturer Serial No. Board Identification Built

~ Replacement (Yes or No.

No) 2X3 RELIEF N60542-OO-0013 N/A CROSBY IDG5O3OA 1997 REPLACED YES VLV 2X3 RELIEF VLV CROSBY N60542-00-0006 N/A IDG5O3OA 1978 REPLACEMENT YES I

7. Description of Work REPLACE RELIEF VLV. WITH PRE-TESTED RELIEF VLV.-PM REQUIREMNT
8. Test Conducted: Hydrostatic 0 Pneumatic O Nominal Operating Pressure Other 0 Pressure 48 psi Test Temp. 144 °F NOTE: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 in. x II in., (2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

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

9. Remarks WO#99157436-01 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT conform to the repair or replacement rules of the ASME Code,Section XI.

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

\~3~J (~~or 6i2~ - -

Owners Designee, Title -

Date _______ , 20 b5 CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State of Province of Illinois and employed by H.S.B. CT.

of I~jprtford,CT. Haye ~pspectedthe components described in this Owners Report during the period

__________ to ~ ,and state that to the best of my knowledge and belief, the O~nerhas perfrrded examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection.

_______________________ Commissions /~z-.,~.tcj Inspectors signature National Board, State, Province, and Endorsements Date 5/ ,20 _____

FORM NIS-2 OWNERS REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 5/17/05 Name 4300 Winfield Rd. Warrenville, II. 60555 Sheet I of I Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, II. Work Order No,. 00734954-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, II. Expiration Date Not Applicable Address
4. Identification of System [DO] Diesel Oil
5. (a) Applicable Construction Code Section III 1977 Edition, 5177 Addenda,N/A Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89 (c) Applicable ASME Section Xl Code Cases: None
6. Identification of Components Repaired or Replaced and Replacement Components National RepaWed, ASME Name of Name of Manufacturer Board Other Year Replaced, code; Stamped Component Manufacturer Serial No. No. Identification Built or Replacement (Yes or No)

Relief Valve Crosby Valve N62578-00-0009 ETN: 1 DOO2OA N/A 1980 Replaced Yes Relief Valve Crosby Valve N62578-OO-O01 I Cat ld# 1403705 N/A ETN: 1DOO2OA 1980 Replacement Yes

7. Description of Work Set point change,bench test and replace relief valve
8. Test Conducted: Hydrostatic 0 Pneumatic ~ Nominal Operating Pressure ~

Other 0 Pressure 33 psi Test Temp. 86 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.,

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

This form has been electronically generated.

FORM NIS-2 (Back)

9. RemarksW/O# 00734954-01 CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT conforms to the rules of the ASME Code,Section XI. ,sjdeorrsØacen~et*

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed ~ Date_______ ,20 o.j CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT.

of Hartford, CT have inspecjed ~Jiecomponents clescnbecl in this Owners Report during the period to $4/,4~ , and state that to the best of my knowledge and belief, the O*inef has performed examinatidns~ndtaken corrective measures described in the Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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 o~onnected with this inspection.

9 $

Commissions BOed, ~MeP,Cv~e, EI~seae,ls

~

Date,7~ 3/ ,20 #5~

FORM NIS-2 OWNERS REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section Xl

1. Owner ________________________________

Exelon Nuclear Date 05/18/05 Name 4300 Winfield Rd. Warrenville, Il. 60555 Sheet I of I Address

2. Plant ___________________________________

Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, II. Work Order No. 00734957-01 Address Repair Organization, P.O. No., Job No.. etc.

3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German ChurchAddress Road, Byron, II. Expiration Date Not Applicable
4. Identification of System [DO] DIESEL OIL
5. (a) Applicable Construction Code Section Ill 1977 Edition, S/77 Addenda,N/A Code Case (b) Applicable Edition of Section Xl Utilized for Repairs or Replacement Components 19 89 (c) Applicable ASME Section XI Code Cases: None
6. Identification of Components Repaired or Replaced and Replacement Components National Repaired, ASME Name of Name of Manufacturer Boerd Other Year Replaced, Code; Stamped Component Manufacturer Serial No. No. Identification Butt or Replacement (Yes or No)

Valve Complete Crosby Valve S/N: ETN:I DOO2OC N62578-0O-0014 N/A 1980 Replaced Yes S/N: ETN:IDOO2OC Valve Complete Crosby Valve N62578-OO-00I2 N/A CAT lD# 1403705 1980 Replacement Yes

7. Description of Work REPLACE RELIEF VALVE WITH NEW SETPOINT CHANGED RELIEF VALVE
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure Z Other 0 Pressure 33 psi Test Temp. 86 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x II in.,

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

This form has been electronically generated.

FORM NIS-2 (Back)

9. Remarksw/o# 00734957-01 Ap~cabeMonutactur&s Data Reports to be attathed I

CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT conforms to the rules of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed ~ ~ C,~7c~? Date SJ3ci ,20 o~

CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT.

of Hartford, CT have inspec~ted~e components described in this Owners Report during the period to ,and state that to the best of my knowledge and belief, the O~nefhasperformed examinatións and taken corrective measures described in the Owners 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 Owners 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 ki arising from r conn ed with this inspection.

~ hapec~rsSç.ix.

Commissions /~L-/45~

BneC Stae we~I~eesents Date ,7~~~43/ 20 ,ç

DOCUMENT NO.: 2A REV. NO.: 1 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 4/02/06 Name 4300 Wlnfield Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00782232-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System FP FIRE PROTECTION section iii 1~f4 iaiiion ~i4 ~aaenaa ~epiacementStrut
5. (a) Applicable Construction Code ASME Section Ill 1977 Edition, S/77 Addenda, 1644-8 Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity: 2001 Edltlon/2003 Addenda (c) Section Xl Code Case(s) None
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year installed (Yes or No)

Component Manufacturer Serial No. No. identification Built N/A EPN:1FP39025X 1982 REMOVED Yes SWAY STRUT ELCEN 2417 FIG. 420N Cat.ld.:1406468 N/A EPN:1 FP39025X 2005 INSTALLED Yes SWAY STRUT ANVIL PROD. N/A

7. Description of Work REPLACE SWAY STRUT 1 FP39025X. REV.1 WELD ON NEW END BRACKET THAT CAME WITH SWAY STRUT.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt 0 Tr-3 Other ~ Pressure n/a psi Test Temp. n/a Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks 00782232-01 Applicable Manufacturers Data tieports to oe auacnea CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Signed Scott Esposito ~ Date 06/30 , 20 06 Owners Designee, Title CERTiFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period

_____________ to ______________ , and state that to the best of my knowledge and belief,

{h~Ownerhas performed e~aminationsand taken corrective measures described in this Owners 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 Owners 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 _____________________

Inspectors Signature National Board, State Province, and Endorsements Date: ~ 20 r2é

L DOCUMENT NO.: 3.2 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

  • 1. Owner Exelon Nuclear Date 09/20/06 Name 4300 WinfIeld Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power StatIon Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00793278-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 36400 S. Essex Road, WIlmington, IL 60481 Expiration Date Not Applicable _____

Address

4. Identification of System FP (FIRE PROTECTION)
5. (a) Applicable Construction Code ASME Section III 1974 Edition, W75 Addenda, None Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (c) Section Xl Code Case(s) NONE
6. Identification of Components ASME Corrected, Code Nation Removed, or Stamped Name of Name of Manufacturer al Other Year Installed (Yes or No)

Component Manufacturer Serial No. Board Identification Buift No.

VALVE, CHECK ANDERSON A3753 N/A 1FP345 1981 REMOVED YES 6 GREENWOOD VALVE, CHECK ANDERSON N25811 N/A 1FP345 19~1 INSTALLED YES 6 (Refurbed) GREENWOOD t.

~s

,,/i~D P~.

7. Description of Work REPLACE CHECK VALVE 1 FP345. ORIGINAL WELD NECK FLANGES AND BODY-TO-FLANGE BOLTING WERE RE-USED AND NOT REPLACED.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure D Exempt 0 Other 0 Pressure 151 psi Test Temp. 68 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WORK ORDER 00793278-01 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPUANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not ApplIcable Certificate of ~thorizationNo. Not ApplIcable Signed qJ~~2C4 ~4&AJt~AJe2I2J~ &~,A)~4Tz)fZ. Date /~/~.o ,20 06 Owj~ror Owners Designee, Title ~Jfl,,Jze/O CERTIFICATE OF INSER VICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have in9pecpd the components described in this Owners Report during the period

_____________ to ,//,4?4~~ , and state that to the best of my knowledge and belief, the (5wner has performedex&ninations and taken corrective measures described in this Owners 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 Owners 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 ,~t/~.~Lc4 Inspectors Signature National Board, State Province, and Endorsements Date: ~149. 0tt7 .20 06 (Final)

DOCUMENT NO.: 2A REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI Owner Exelon Nuclear Date 2/13/06 Name 4300_Winfleld Road, Warrenvllle, IL Sheet 1 of I Address Byron Nuclear Power Station Unit 00 Name 4450_N. German Church Road, Byron, IL Work Order No. 00807090-01 Address Repair Organization. P.O. No., Job No., etc.

Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable MaIntenance Name Authorization No. Not Applicable N. German Church Road, Byron, IL Expiration Date Not Applicable Address Identification of System [FP] Fire protection [1-FP-2-N5]

Applicable Construction Code ASME Section III 1974 Edition, S/75 Addenda, N/A Code Case Applicable Edition of Section XI Used for Repair/Replacement Activity: 2001 Edition/2003 Addenda*

Section Xl Code Case(s) N/A Identification of Components ASME Corrected, Code National Removed, or Stamped of Name of Manufacturer Board Other Year installed (Yes or No)

Component Manufacturer Seilal No. No. Identification Built Hunter Corp. 242749, 3137, N/A ETN: OFPJ6A-4 1934 NO L03363 FP-22-6 U~emov DEG (2) Southwest 9298 N/A EN: OFPJ6A-4 1979 Re movad NO Fabricating FP-22-6 Hunter Corp. AU6N N/A EN: OFPJ6A-4 NO FP-22-6 emov Consolidated HT# U82949 N/A CAT ID; 24993 NO Power supply ETN: OFPJ6A-4 2005 Installled DEG (2) Consolidated HT# P409A - N/A CAT ID; 24615 2005 I flStallIed NO Power supply ETN: OFPJ6A-4 Consolidated HT# M064-49 N/A CAT ID; 24730 Power supply ETN: OFPJ6A-4 005 lnstallled

7. Description of Work Replace section of 4 line no. OFPJ6A
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 145 psi Test Temp. 75 °F Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (I) size is 8Y2 in. x 11 in., (2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks 00807090-01 Applicable Manufacturers Data i~eportsto oe anacnea
  • Note: Welds #3, 4, 5, 6 were fabricated prior to the 10-Year ISI Update (ASME Section XI 1989 ED). Welds
  1. 2 and 7 were fabricated after the 10-Year ISI Update (ASME Section XI 2001 Ed/2003 Ad). Post

- Maintenance Testing performed to ASME Section XI 2001 Ed/2003 Ad).

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

Type Code Symbol Stamp Not Applicable Certificate of ~ti~thorizationNo. Not Applicable Signed ~\ ~ ~ ~ Date 3/a ,20 t4~

Owner Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of IllInois and employed by HSB CT of Hartford, CT have insp~tedthe components described in this Owners Report during the period

______________ to _______________ , and state that to the best of my knowledge and belief, tice ówner has performed examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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 /2/- ff9 inspectors Signature National Board, State Province, and EndOrSementS Date: ~ d/ ,20 ~

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

1. Owner Exelon Nuclear Date 11/11/05 Name 4300 Winfield Road, Warrenville, IL 60555 Sheet I of Address
2. Plant Byron Nuclear Power Station Unit 00 Name 4450_N. German Church Road~Byron~IL 61010 Work Order No. 00862599-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by ~ea~1~cal Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL 61010 Expiration Date Not Applicable Address
4. IdentificatIon of System [FPI Fire Protection
5. (a) Applicable Construction Code Section Ill 19 74 EdItion, S/75 Addenda, N/A Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89 (c)Section XI Code Cases used, N-416-2
6. Identification of Components Repaired or Replaced and Replacement Components ASME Repaired, Code National Replaced, Stamped Name of Name of Manufacturer Board Other Year or (Yes or No)

Component Manufacturer Serial No. No. Identification Built Replacement 6 Pipe SOUTHWEST S/N: 8240 N/A ETN:OFPC2BA-6 Sch 40 FAB MK# FP-14-4 1977 Replaced Yes 6 Pipe Consolidated Heat Code: N/A ETN:OFPC2BA-6 Sch4O Pipeand Supply X82519 2004 Rep~ment No PIPE TO LUG HUNTER CORP N/A N/A ETN:OFPC2BA-6 WELDS M-1FP04025X 1983 Replaced No PIPE TO LUG EXELON CORP N/A N/A ETN:OFPC2BA-6 WELDS M-1FP04025X 2005 Replacement No

7. Description of Work REPLACE PIPE SPOOL. REMOVE LUG FROM EXISTING PIPE AND INSTALL ON NEW PIPE.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~

Other 0 Pressure 147 psi Test Temp AMBIENT °F 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 I through 6 on this report is includedon each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO#00862599-0I Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT conform to the rules of the ASME Code,Section XI. repair or replacement Type Code Symbol Stamp Not Applicable Certificate of Aut~tlorizati~)JsJo. Not Applicable Signed ~ ~) 4~1-~~ ~. CitrA Date Ø.2~ ,20 ~.

~ (~~r Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hapford, CT have in~pect~Ø the components described in this Owners Report during the period

______________ to _______________ , and state that to the best of my knowledge and belief, the bwner has performed exa~inationsand taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property ctarna~eor a loss of auy kind arising from or connected with this inspection~--~-

____________________ Commissions //E. //5-4 inspectors Signature Natlonai Board, State Province, and EndOrSementS Date: JftH~ 5i2 ,20 ______

FORM NIS-2 OWNERS REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 11/23/05 Name 4300 WinfleId Road, Warrenville, IL 60555 Sheet I of Address
2. Plant Byron Nuclear Power StatIon Unit 00 Name 4450_N. German Church Road, Byron, IL 61010 Work Order No. 00862599-11 Address Repatr Organization. P.O. No., Job No., etc.
3. Work Performed by Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450_N. German Church Road, Byron, IL 61010 Expiration Date Not Applicable Address
4. Identification of System [FPI Fire Protection
5. (a) Applicable Construction Code SectIon III 1974 Edition, S/75 Addenda, N/A Code Case (b) Applicable Edition of Section Xl Utilized for Repairs or Replacement Components 19 89 (c) Section Xl Code Cases used, N-416-2
6. Identification of Components Repaired or Replaced and Replacement Components ASME Repaired, Code National Replaced, Stamped Name of Name of Manufacturer Board Other Year or (Yes or No)

Component Manufacturer Serial No. No. Identification Built Replacement 6 P~e SOUTHWEST S/N: N/A ETN: OFPC4A-6 FAB 8237 MK#14-1 1977 Replaced YES 6 Pipe CONSOLIDATED HT: X82519 N/A ETh: OFPC4A-6 POWER SUPPLY CODE: B4YZ 2005 Replacement NO PIPE TO LUG HUNTER CORP N/A N/A ETN:OFPC4A-6 WELD M-1FP04035X 1977 Replaced NO MK#2A PIPE TO LUG EXELON CORP N/A N/A ETN:OFPC4A-6 WELD M-1FP04035X 2005 Replacement NO

7. Description of Work REPLACE PIPE SPOOL. REMOVE LUG AND REINSTALL ON NEW PIPE
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~

Other 0 Pressure 147 psi Test Temp AMBIENT °F Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top ofthis form.

FORM NIS-2 (Back)

9. Remarks W0#00862599-1 I Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT conform to the rules of the ASME Code,Section XI. repair or replacement Type Code Symbol Stamp Not Applicable Certificate of A orization No. Not Applicable Signed 4ç/_

9~

g,~(~(,C.,Q Tide Date V(~~

CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of IllInois and employed by HSB CT of Hartford, CT have in~pe3tedthe components described in this Owners Report during the period

// ~ tsg to ~ , and state that to the best of my knowledge and belief, the er has performe6ex~minatlonsand taken corrective measures described in this Owners 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 Owners Report.

Furthermore, neither theJnspector nor his employer shall be liable in any manner for any personal kijury~orprupertydamage sk~ssafarrykind-ar1singirorrrorconnectedwith 1h~inspeetIon~~~

(~4~j~~

Commissions /11 -/f~5 Inspectors Signature National Board, State Province, and Endorsements Date: Je,. 30 ,20 ~7 6

9A REV. NO,: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 04/21/06 Name 4300 Winfleld Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 00 Name 4450 N. German Church Road, Byron, IL Work Order No. 00908440-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System IFPI Fire Protection
5. (a) Applicable Construction Code ASME Section III 1974 Edition, Sf75 Addenda, N/A Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 Edition/2003 Addenda (c) Section Xl Code Case(s) NONE
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built 6 pipe sch.40 SOUTHWEST ETN:OFPJ9A-6 FAB S/N: 9074 N/A FP-25-1 1977 Removed YES 6 pipe sch.40 CONSOLIDATED Catuid: 24417-1 POWER SUPPLY HT#: X82519 N/A ETN:OFPJ9A-6 2006 Installed NO 6 PIPE ELBOW SOUTHWEST S/N: 9074 N/A ETN:OFPJ9A-6 1977 Removed NO 90 DEGREE 3 ea. FAB FP-25-1 6 PIPE ELBOW SOUTHWEST S/N: 9074 N/A ETN:OFPJ9A-6 1977 Removed N 9ODEGREE1ea. FAB 6 PIPE ELBOW SOUTHWEST S/N: 9074 N/A ETN:OFPJ9A-6 1977 Removed NO 45 DEGREE 1 ea. FAB FP-25-1 6 PIPE ELBOW CONSOLIDATED HT#: N862B N/A Cat/id: 2491 3-1 2005 Installed NO 90 DEGREE 4 ea. POWER SUPPLY ETN:OFPJ9A-6 6 PIPE ELBOW CHICAGO HT#: FH6W N/A Catiid: 2491 4-1 1993 Installed NO 45 DEGREE 1 ea. BRIDGE & IRON ETN:OFPJ9A-6 Pipe support HUNTER CORP HT. # 4(32087 N/A ETN:OFPJ9A-6 1980 Removed NO saddle-lug weld M-1 FP06042X Pipe support Exelon N/A N/A ETN:OFPJ9A M-lFPO6o42x6 2006 Installed NO saddle-lug weld

7. Description of Work REPLACE PIPE SPOOL AND FITTINGS. REMOVE PIPE SUPPORT SADDLE FROM REMOVED PIPE AND REINSTALL ON INSTALLED PIPE.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 VT-3 Other ~ Pressure 170 psi Test Temp. 72.5 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 In., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks W/O 00908440-01 Applicable Manufacturers Dafa iiepons io oe auacnea CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Aut~orizationNo. Not Applicable Signed ~ <~J~9~ C~4?. Date ~ ,20 e~1 Owne or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspe5ted the components described in this Owners Report during the period

______________ to ~ , and state that to the best 9f my knowledge and belief, the Owner has performed examinations and taken corrective measures described in this Owners 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 Owners 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 ,//- /15.4 inspectors SignatuFe National Board, State Province, and Endorsements Date: ~~$,/7 ,20 ~

I DOCUMENT NO.: 8A REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xi

1. Owner Exelon Nuclear Date 04/21/06 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 00 Name 4450 N. German Church Road, Byron, IL Work Order No. 00911617-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System [FP] Fire Protection
5. (a) Applicable Construction Code ASME Section III 1974 Edition, Sf75 Addenda, N/A Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 Editlon/2003 Addenda (c)Section XI Code Case(s) NONE
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built 6 pipe sch.40 SOUTHWEST S/N: 9075 N/A ETN:OFPJ9A-6 1977 Removed FP-25-2 Yes FAB 6 pipe sch.40 CONSOLIDATED Cat/id: 2441 7-1 POWER SUPPLY HT # X82519 N/A ETN:OFPJ9A-6 2006 Installed NO 6 PIPE ELBOW SOUTHWEST S/N: 9075 N/A ETN:OFPJ9A-6 1977 Removed Yes 90 DEGREE FAB FP-25-2 6 PIPE ELBOW CONSOLIDATED ETN:OFPJ9A-6 90 DEGREE POWER SUPPLY HT #: N862B N/A Cat_Id 24913 2005 Installed NO 4 Pipe Stanchion BARR- ETN:OFPJ9A-6 N/A 1982 Removed NO SAUNDERS 164884 M-2FP11001A 4 Pipe Stanchion CHICAGO TUBE HT #: L21434 N/A ETN:OFPJ9A-6

& IRON LOT: 1F4056 M-2FP11001A 1992 Installed NO

7. Description of Work REPLACE PIPE SPOOL AND FITTINGS. REMOVE PIPE SUPPORT STEEL (lT#1)

OF 2FP1 1001 A FROM REMOVED PIPE AND REPLACE WITH NEW.

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 VT-3 Other ~ Pressure 170 psi Test Temp. 72.5 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks Work Order No. 00911617-01 Applicable Manufacturers Data deports to De attacflect CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of AutI~orizatio~J~Jo. Not Applicable Signed ~ ~ Date _________ ,20 C 4 or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of ~IarL~ord, CT have in,pe9ted the components described in this Owners Report during the period

______________ to .$~#,4~1 , and state that to the best of my knowledge and belief, th~O~ner has pert orme~e~minationsand taken corrective measures described in this Owners 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 Owners 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 /fZ~/I~

Inspectors Signature National Board, State Province, and Endorsements Date: /9 ,20 _______

DOCU MENT NO.: 4.1 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl Owner Exelon Nuclear Date 9/17/06 Name 4300 Wlnfleld Road, Warrenville, IL Sheet 1 of 1 Address Plant Byron Nuclear Power Station Unit 01 Name 445 0 N. German Church Road, Byron, IL Work Order No. 00634888-01 Address Repair Organization, P.O. No., Job No., etc.

Wor k Performed by NWS Technologies LLC Type Code Symbol Stamp VR, NR Name Authorization No. 632, 81 131 Venture BIvd, Spartanburg, SC 29306 Expiration Date 4/3/09, 4/9/09 Address Iden tification of System MS-MAIN STEAM -1 MSO13D (a) Applicable Construction Code ASME Section III 1974 Edition, N/A Addenda, NONE Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (C)Section XI Code Case(s) NONE Identification of Components ASME Corrected, Code Nationai Removed, or Stamped of Name of Manufacturer Board Othr Year Instailed (Yes or No) t Manufacturer Serial No. No. Identification Built VALVE DRESSER IND. GJE/AAF45 N/A 101 1977 REMOVED NO VALVE DRESSER IND. ADG27 N/A 2001 INSTALLED NO

7. Description of Work REFURBISH ThE VALVE & TEST AT VENDOR, INSTALL NEW DISC (CAT ID 16492)

MATERIAL - SB-637 INCONEL X-750 MATERIAL PER EC 79123

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt ~

Other 0 Pressure N/A psi Test Temp. N/A Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO# 00634888-01 Applicable Manufacturers Data Reports tO be~attchéd~

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

Type Code Symbol Stamp Not Applicable Certificate of A horization No. Not Applicable Signed ~ Date _________ , 20 06 or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have irjspec)ed the components described in this Owners Report during the period

______________ to _______________ , and state that to the best of my knowledge and belief, tfe Owner has performed examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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 ,i1-i~e.c1 Inspectors Signature National Board, State Province, and Endorsements Date: 441, ~ , 20 06 (Final)

. ~f_ ..~ .~, ~ ~ui auu~

FORM NVR-1 REPORT OF REPAIR ~ REPLACEMENT ~I OF NUCLEAR PRESSURE REUEF DEVICES wo ~o~~-ei

1. Work performed by: P-JWS TechnologIes, LLC - Purchase Order# 00415135 131 Venture Boulevard, Spartanbui~,SC 29306
2. Work performed for Exelon Corporation, Byron Nuclear Station 3/4. Owner- name, address andidentification of nuclear power plant Exelon Corporation~

Byron Nuclear StatIon 4450 N. German Church Road Byron, IL. 61010 Main SteamSafety Valve

5. a: Repaired pressure relief device: __________________________________________________________

b: Name of manufacturer Consolidated I Dresser C: Identifying nos.

3707R BR09893 n/a steam 6 77 (typs) (mWs S*~ (N5S) (leivics) (slz.)

d: Construction Code: ASME SeCtion III 1974 n/a n/a 2 (r~ms1i.odoi Milan) (edlilon) (addend.) (Cods Cases(s)) (Gods Class)

6. ASME Code Section Xl applicable for inseMce inspection: 2001 2003 n/a (sdNlan) (addsnda) (Cods Case(s))
7. ASME Code Section XI used for repairs, replacements: 2001 2003 , n/a

~ddsnds) (Code CassM

8. ConstructIon Code used for repairs, replacements: 1974 Na n/a

(.dllon) (addsnds) (Cods Case(s))

9. DesIgn reeponslbllltles n/a
10. OpenIng pressure: 1235 psig Set-pressure adjustment made at NWS Technologies, LLC using Steam
11. DescrIption of work (lnckide nsms and ldsntWylag numbsr of ruplas.nisr~p.r~): Disassembled, cleaned, Inspected. -

lapped nozzle & passivated seat area~.Installed antl-gulde-moverfleflt modification EC#340678, installed pre-oxldized X750 disc, assembled. Cerffl~edset~pressureand seat tightness üutng Steam..

12. Remarks: New disc s/n ADG27 Installed. NWS Traveler# 06-237.

CERTIFICATE OF COMPUANCE I, Brad M. Schulte certify that to the best of my knowledge and belief the statements made in this report are correct and the repair, modification or.replacement of the pressure relief devices described above conforms to Section XI of the ASME Code and the National Board Inspection Code WVRn and NW rules.

National Board Certificate of AUthorizatiOn No. 632 to use the WVRU stamp expires Apr83, 2009 National Board Certificate ofAuthorizétlon No. 81 to us~~e,~RJta~p expires ~..pru 9,2009.

gJri/t~ NWS Technologies, LLC ________________________ ~ji~ce~resicient Rspafr Organ~atlon Authoi~.d,.pcssentatlvs This CERTIFICATE OF INSPECTION I, Charles F. Toeg.I Jr. holding a valid commIssion issued by The National Board of BoIler and Pressure Vessel Inspectors and certificate of competency issued by the jurisdiction of North Carolina and employed by Hartford St..m Boiler of CT - of Hartford, CT have inspected the repair, modification or replacement described in this report on /7~P~ ~3~and state that to the best of my knowledge and belief, this repair modification or replacement has been completed In accordance with Section Xl of the of the ASME Code and the National Board Inspection Code yRTM and NWrules.

By signing this certificate, neither the undersigned nor my employer makes any warranty, expressed or implied, concerning this repair, modification or replacement described in this report Futhermore, neither the undersigned nor my emplo~ershaN be liable in any manner for any personal injury, property damage or loss of any kind I

DOCUMENT NO.: 4.1 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 9/17/06 Name 4300 Wlnfield Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00634890-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by NWS Technologies LLC Type Code Symbol Stamp VR, NR Name Authorization No. 632, 81 131 Venture BIvd, Spartanburg, SC 29306 Expiration Date 4/3/09, 4/9/09 Address
4. Identification of System MAIN STEAM (MS]
5. (a) Applicable Construction Code ASME Section III 1974 Edition, N/A Addenda, NONE Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (C) Section Xl Code Case(s) NONE
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Buitt DISC, VALVE DRESSER IND.

HT1G2411

~ B 1

1980 REMOVED NO DISC, VALVE DRESSER IND. ~~87 N/A 2001 INSTALLED NO

7. Description of Work REFURBISH ThE VLV & TEST AT VENDOR. INSTALL NEW DISC (CID 16492) MATL-SB637 INCONEL X-750 PER EC 79123.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt ~

Other 0 Pressure n/a psi Test Temp. n/a Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO# 00634890-01 Applicable Manufacturers Data tiepons to oe auacneo CERTiFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of k~~thorization No. Not Applicable Signed ~ Sjvct__ ~ ~ ~ Date ~/-& ( 20 06

(~or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period

______________ to ______________ , and state that to the best of my knowledge and belief, the Owner has perrormedexaminations and taken corrective measures described in this Owners 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 Owners 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 ________________________

Inspectors Signature National Board, State Province, and Endorsements Date: ____________ ,2006 (FINAL)

- r ~ ~~** oo, ~o i ~uu~

FORM NVR-1 REPORT OF REPAIR ~ REPLACEMENT ~

OF NUCLEAR PRESSURE RELIEF DEVICES wo 0 p~3Lj~

2~

j~

1

( 1.Work performed by: NWS Technologies, LLC Purchase OrderS 00415135 131 Venture Boulevard, Spartanburg, SC 29306

2. Work performed for Exelon Corporation, Byron Nuclear Station 3/4. Owner - name, address and identification of nuclear power plant Exelon Corporation,

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

5. a: Repaired pressure relief device: Mali Steam Safety Valve b: Name of manufacturec Consolidated I Dresser C: Identifying nos.

3707R BR09591 n/a steam 6 77 (type) (rr~rsSIN) (NBS) (service) (size) (yr.bullt) d: Construction Coder ASME Section III 1974 nia fl/a - 2 (name/uctlo&divlslon) (edItion) (addenda) (Cods Cases(s)) (Code Class)

6. ASME Code Section XI applicable for inservice inspectIon: 2001 2003 n/a (ed~lon) (addenda) (Cods Case(s))
7. ASME Code Section XI used for repairs, replacements: 2001 2003 n/a (edition) (addenda) (Cods Case(s))
8. Construction Code used for repass, replacements: 1974 n/a n/a (edison) (addenda) (Code Case(s))
9. Design responsibilities: n/a
10. 9penlng pressure: 1235 pslg Set-pressure adjustment made at NWS Technologies, LLC using steam

.... 11. DescriptIon of work (~dudsname and idsnU~yki9number o( raplacement parts) Disassembled, cleaned, lnspected~

lapped nozzle & passivated seat area, Installed anti-guide-movement modification EC#3406~Installed anti-vibration modification EC#339376, Installed pre-oxldized X750 disc, assembled Certified set-pressure and seat tightness using steam.

12. Remarks: New disc s/n ADG37 Installed. NWS Traveler 506-236.

CERTIFICATE OF COMPUANCE I, Brad M. Schulte certify that to the best of my knowledge and belief the statements made in this report are correct and the repair~modification or replacement of the pressure reliefdevices described above conforms to Section Xl of the ASME Code and the National Board Inspection Code NVRW and 0NR rules.

National Board Certificate of Authorization No. 832 to use the UVRN stamp expires April 3, 2009.

National Board Certificate of Authorization No. 81 to us th MNR~stamp expires April 9, 2009.

_________ NWS Technologies, tiC . 1JA)cT Vice President

- Dale R.p.lr Org*n~atlon ad representative This CERTIFICATE OF INSPECTION I, Charles F. Toegel Jr. holding a valid commission issued by The National Board of Boiler and Pressure Vessel Inspectors and certificate of competency issued by the jurisdiction of North Carolina and employed by Hartford Steam Boiler of CT of Hartford, CT have inspected the repair, modification or replacement described in this report on ,7 ç~p~ ~ and state that to the best of my knowledge and belief, this repair, modification or replacement has been completed in accordance with Section XI of the of the ASME Code and the National Board Inspection Code VRM and NR rules.

By signing this certificate, neither the undersigned nor my employer makes any warranty, expressed or implied.

concerning this repaw, modification or replacement descnbed in this report Futhermore. neither the undersigned nor my employer shall be liable In any manner for any personal injury, property damage or loss of any kind arising from or connededj~ththis ins~ecJon.

_________ - NB 58462, A, N, 1 HC# 1073 Sio ~ faif~Vv~~rtk,n IMR 1ln~i~nA~r~mi.nf~ jtnis~ietinn.&~noj

F DOCUMENT NO.: 4.1 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 9/17/06 Name 4300 Winfield Road, Warrenvllle, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00645649-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by NWS Technologies LLC Type Code Symbol Stamp VR, NR Name Authorization No. 632, 81 131 Venture Blvd, Spartanburg, SC 29306 Expiration Date 4/3/09, 4/9/09 Address
4. Identification of System MaIn Steam [MS]
5. (a) Applicable Construction Code ASME Section III 1974 Edition, N/A Addenda, NONE Code Case (b) Applicable Edition, of Section XI Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (c) Section Xl Code Case(s) NONE
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built DISC, VALVE DRESSER IND. ADG4O N/A ES~~:B 9309 1981 REMOVED NO DISC, VALVE DRESSER IND. HT:68787 N/A 2001 INSTALLED NO

7. Description of Work REFURBISH ThE VLV & TEST AT VENDOR. INSTALL NEW DISC (CID 16492) MATL-SB637 INCONEL X-750 PER EC 79123
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt ~

Other 0 Pressure N/A psi Test Temp. N/A Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

4 FORM NIS-2 (Back)

9. Remarks WO# 00645649-01 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of A~horizationNo. Not Applicable Signed ,~. j~.. Date _________ , 20 06

(~~orOwners 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 HSB CT of Hartford, CT have in~pect9dthe components described in this Owners Report during the period

______________ to _______________ , and state that to the best of my knowledge and belief, the wner has performed examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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.

_________________________ Commissions _________________________

Inspectors Signature National Board, State Province, and Endorsements Date: -. , -~ , 20 06 (Final)

.. - - __-I P.,

FORM NVR-1 REPORT OF REPAIR 2 REPLACEMENT ~1 OF NUCLEAR PRESSURE RELIEF DEVICES ~ 00

1. Work performed by: NWS Technologies LL.C Purcttase OrderS 004151 35 131 Venture Boulevard, $partanburg, SC 29306
2. Work performed for Exebn Co!pocatiOn, Byron Nuclear Station 3/4. Owner - name, address and identifIcation of nuclear power plant Exelon Corporation, Byron Nuclear Station 4460 N. German Church Road Byron, IL 61010
5. a: Repaired pressure relief device: Main Steam Salety Valve b: Name of manufacturec Consolidated / Dresser C: Identifying nos.

3707R BR09609 n/a steam 6 77 (type) (mSs SIN) (N85) (service) (s~s) (yr.bullt) d: Construction Code: ASME Section III 1974 ri/a n/a 2

- ( (Cods Came(s)) (Code ~

6. ASME Code Section Xl apØcable for inservice inspection: 2001 2003 n/a

) (Cods Case(s))

7. ASME Code Section Xl used for repairs, replacements: 2001 2003 n/a

. (edlion) (addenda) (Cod. Case(s))

8. Conslruction Code used for repairs, replacements: 1974 n/a n/a

(.dtilon) (addsnda) (Cods case(s))

9. DesIgn responsibilities: n/a
10. OpenIng pressure: 1175 ~eig Set-pressure a~ustmentmade at NWS Technologle~LLC using steam

~ 11. DescrIption of work Ondude name and Idel~ingnui~ro( r.plscsmsnt pelts): Disassembled, cleaned, inipectec, lapped nozzle & passivated seat areajnstailed anti-guide-movement modification EC*340678, Installed anti-vibration modification EC#339376, installed ire-oxidized )(750 disc, assembled Certified sat-pressure d seat ssusI~steam

12. Remarks: New disc s/n ADG3O histeH~N~Traveler506-238.

CERTIFICATE OF COMPLIANCE I, Brad M. Schulte certify that to the best of my knowledge and belief the statements made In this repórUare correct and the repair, modification or replacement of the pressure relief devices described above conforms to Section XI of the ASME Code and the National Board Inspection Code KVR~and NR rules.

National Board Certificate of Authorization No. 632 to use the VR stamp expires April 3,2009.

National Board Certificate of Authorization No. 81 to u~~e expires AprIl 9, 2009.

3/i lJoi, NWS Tecbnolog3ge, LLC /14 Vice President Date Repafr Oi~anIzatian Authorized representative Title CERTIFICATE OF INSPECTION 1, Charles F. To.91 Jr. holding a valid commission issued by The National Board of Boiler and Pressure Vessel Inspectors and certificate of competency issued by the jurisdiction of North Carolina and employed by Hartford Steam Boiler of CT of Hartford, CT have inspected the repair, modification or replacement described in this report on /7~Pr..~and state that to the best of my knowledge and belief, this repair, modification or replacementhas been completed in accordance with Section XI of the of the ASME Code and the National Board Inspection Code VR and NR rules.

By signing this certificate, neither the undersigned nor my employer makes any warranty, expressed or implied.

concirnin~this repair, mOdtfl~abonbrrepiacemettt described in this report Futherrno~neither the undersigned nor my employer shall be liable in any r~iannerfor any pe_rsonal injury, property damage or Loss of any kind I

~1

I DOCUMENT NO.: REV. NO.:

. 1. Owner FORM NIS-2 OWNERS REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section Xi Exelon Nuclear Date 09/18/06 Name 4300 WInfield Road, Warrenville, IL Sheet 1 of 1 Address

2. Plant Byron Nuclear Power Station UnIt 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 731035-01 Address Repair OrganIzation~P.O. No., Job No.. e*c.
3. Work Performed by N P S & W VENTURE Type Code S)mbol Stamp Not Applicable Name Authorization No. Not Applicable 36400 S. Essex Road. WIlminaton. IL 60481 Expiration Date Not~ppiIcable Address
4. IdentIfication of System MAIN STEAM
5. (a) Applicable Construction Code ASME Section III 1974 EdItion, S74 Addenda, 1644 Rev. 7, 1651, 1682, 1683, 1685, 1686, 1728, 1729, 1734, N-108, N-ISO Code Case (b) Applicable EdItion of Section Xl Used for Repair/Replacement ActIvity 2001. Edition / 2003 Addenda (C) Section Xl Code Case(s) NONE
6. identification of Components ASME a

Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

~ Component Manufacturer Serial No. No. Identification Built PIVOT PIN GRINNELL N/A N/A 1MS08007S2 N/A Removed NO TAPERED PIN ANVIL N/A N/A CAT ID 1396339 N/A Installed NO

7. Description of Work REPLACED PIVOT PIN WITH TAPERED PIN
8. Test Conducted: HydrostatIc 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt 0 VT-3 Other ~ Pressure _________

__________ psi Test Temp.

Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2)

Information In items 1 through 6 on this report is included on each sheet, and (3) each sheet Is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO 731035-01 Applicable Manufacturers Data Reports to be attached CERTIFiCATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Signed ___ Date 9-ZG ,2006 Owner a Designee, Title CERTIFICATE OF INSER VICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have ins ed the components described in this Owners Report during the period

_____________ to ~ , and state that to the best of my knowledge and belief, the ner has perform examinations and taken corrective measures described In this Owners 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 Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal Injury or property dthnage or a loss of any kind arising from or connected with this inspection.

____________________ Commissions JI1JI~54 lnspectocs Signature National Board, State Province, and Endorsements Date: ___________ ,2006 (Final)

DOCUMENT NO.: 6.0 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI Exelon Nuclear Date Name Wlnfield Road, Warrenville, IL Sheet 1 of 1 Address Byron Nuclear Power Station Unit 01 Name N. German Church Road, Byron, IL Work Order No. 00792236-01 Address Repair Organization, P.O. No., Job No., etc.

Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable S. Essex Road, Wilmington, IL 60481 Expiration Date Not Applicable Address Identification of System REACTOR COOLANT [RC]

Applicable Construction Code ASME Section III 1974 Edition, S74 Addenda, NONE Code Case Applicable Edition of Section Xl Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda Section Xl Code Case(s) NONE Identification of Components ASME Corrected, Code National Removed, or Stamped of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built COOLER PERFEX DIV. 875201-2 s,!8~~io 1976 REMOVED YES COOLER PERFEX DIV 900401-1 5960 1978 INSTALLED YES COOLER IONICS INC. 7512/13-12 412 1976 REMOVED YES COOLER IONICS INC. 8062/63-2 529 si~~~i 1978 INSTALLED YES

7. Description of Work Replace 1 C Reactor Coolant Pump Motor Assembly 3S-84P740 with Refurbished Motor Assembly 4S-84P741. Motor Assemblies include upper and lower oil coolers.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure Exempt 0 Other D Pressure 132 psi Test Temp. 75 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks Work Order 00792236-01 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of AutI~orizationNo. Not Applicable Signed ~ ~ ~ Date IIJ~3 ,20 06

~or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of IllInois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period

~ to ______________ , and state that to the best of my knowledge and belief, tice Owner has performed examinations and taken corrective measures described in this Owners 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 Owners 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 _____________________

Inspectors Signature National Board, State Province, and Endorsements Date: ~ /3 ,20 06 (Final)

FORM NIS-2 OWNERS REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section Xl Owner Exelon Nuclear Date 3/13/06 Name Winfleld Road, Warrenville, IL 60555 Sheet 1 of 4 Address Byron Nuclear Power Station Unit 00 Name N. German Church Road, Byron, IL 61010 Purchase Order No. 00083172 Release 00002 Address Repair Organization, P.O. No., Job No., etc.

Performed by Westinghouse Electric Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable Box 355 Pittsburgh PA 15230-0355 Expiration Date Not ApplIcable Address Identification of System Reactor Coolant [RC] - Spare Reactor Coolant Pump Motor Oil Coolers W76 Upper Oil Cooler Applicable Construction Code Section III 1974 Edition, S74 Addenda, None Code Case Applicable Edition of Section Xi Utilized for Repairs or Replacement Components 2001 Ed/2003 Ad Section Xl Code Cases used, None Identification of Components Repaired or Replaced and Replacement Components ASME Corrected, Code National Removed, or Stamped of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built Cooler Top Perfex Division n/a n/a S/N 900401-1 1978 Removed No Studs (12)

Cooler Top Nova Machine HT: 230111 n/a S/N 900401-1 Studs (12) Products HT Code: 86E 2005 I nsta lied No Upper Oil Cooler Top Perfex Division n/a n/a S/N 900401-1 End Cover Nuts (24) 1978 Removed No Upper Oil Cooler Top Nova Machine HT: 7220464 n/a S/N 900401-1 End Cover Nuts (24) Products HT Code: 86E 2005 Installed No Upper Oil Cooler Btm Perfex Division n/a n/a S/N 900401-1 End Cover Studs (12) 1978 Removed No Upper Oil Cooler Btm Nova Machine HI: 23011 n/a S/N 900401-1 End Cover Studs (12) Products HTCode: 86E 2005 Installed No Cooler Btm Perfex Division n/a n/a S/N 900401-1 (24) 1978 Removed No Cooler Btm Nova Machine HT: 7220464 n/a S/N 900401-1 (24) Products HT Code: 86E 2005 Installed No

7. Description of Work Replace Bolting on Upper Oil Cooler S/N 900401-1 and Lower Oil Cooler S/N 8062/63-2 for Spare Reactor Coolant Pump Motor S/N 4S-84P741.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt 0 N/A Other 0 Pressure N/A psi Test Temp N/A Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2in. x 11 in., (2) information in items I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks Purchase Order No. 00083172 Release 00002 Applicable Manufacturers Data Heports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of Aujhorization No. Not Applicable Signed ~~r ~ Date ~ ,20 04, Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period

______________ to _______________ , and state that to the best of my knowledge and belief, tfce ~iwnerhas perform~examinations and taken corrective measures described in this Owners 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 Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal

~uryorpropertyd~aeora loss of any kind arising from or connected with this inspection.

__________________________ Commissions ~/.. ~~t54 National Board, State Province, and Endorsements Date: ___________________ __________

________,20 ~

FORM NIS-2 SUPPLEMENTAL SHEET

1. Owner Exelon Nuclear Date 03/13/06 Name 4300 Winfield Road, Warrenville, IL 60555 Sheet 2 of 4 Address
2. Plant Byron Nuclear Power Station Unit 00 Name 4450 N. German Church Road, Byron, IL 61010 Purchase Order No. 00083172 Release 00002 Address . Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Westinghouse Electric Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable P0 Box 355 Pittsburgh PA 15230-0355 Expiration Date Not Applicable Address
4. Identification of System Reactor Coolant [RCJ Spare Reactor Coolant Pump Motor Oil Coolers W76 Upper Oil Cooler
5. (a) Applicable Construction Code SectIon III 1974 Edition, S74 Addenda, None Code Case (b) Applicable Edition of Section Xl Utilized for Repairs or Replacement Components 2001 Ed/2003 Ad (C) Section Xl Code Cases used, None
6. Identification of Components Repaired or Replaced and Replacement Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built Upper Oil Cir Top Sta. Perfex Division n/a n/a S/N 900401-1 Flange Studs (8) 1978 Removed No Upper Oil Clr Top Sta. Nova Machine HI: 230111 n/a S/N 900401-1 Flange Studs (8) Products HT Code: 86E 2005 Installed No Upper Oil CIr Top Sta. Chicago Tube & HI: 122Z245 n/a S/N 900401-1 Flange Studs for Drip Pan (4) Iron Code: LIDE 1981 Removed No Upper Oil CIr Top Sta. Nova Machine HT: 230111 n/a S/N 900401-1 2005 Installed Flange Studs for Drip Pan (4) Products Lot: 50046080 No Upper Oil CIr lop Sta. Perfex Division n/a n/a S/N 900401-1 Flange Nuts (24) f~,1J.123 1978 Removed No Upper Oil Cit Top Sta. Chicago lube & HI: 8867040 n/a S/N 900401-1 Flange Nuts for Drip Pan (4) Iron Code: LICC 1981 Removed No Upper Oil Clr Top Sta. Nova Machine HI: 7220464 n/a S/N 900401.1 Flange Nuts (28) Products HI Code: 86E 2004 Installed No Upper Oil CIt Btm Floating Perfex Division n/a n/a S/N 900401.1 Flange Studs (12) 1978 Removed No Upper Oil Clr Btm Floating Nova Machine HT: 230111 n/a S/N 900401-1 Flange Studs (12) Products HT Code: 86E 2005 Installed No

~

Upper Oil Cir Btm Floating JPerfex Division n/a n/a S/N 900401-1 Flange Nuts (24) .

1976 Removed No Upper Oil CIr Btm Floating Nova Machine HI 7220464 n/a S/N 9004011 Flange Nuts (24) Products HT Code: 86E 2005 Installed No

FORM NIS-2 SUPPLEMENTAL SHEET

1. Owner Exelon Nuclear Date 3/13/06 Name 4300 Winfleld Road, Warrenvllle, IL 60555 Sheet 3 of 4 Address
2. Plant Byron Nuclear Power Station Unit 00 Name 4450 N. German Church Road, Byron, IL 61010 Purchase Order No. 00083172 Release 00002 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Westinghouse Electric Type Code Symbol Stamp Not ApplIcable Name Authorization No. Not Applicable P0 Box ~55Pittsburgh PA 15230-0355 Expiration Date Not Applicable Address
4. Identification of System Reactor Coolant [RC] - Spare Reactor Coolant Pump Motor Oil Coolers W76 Upper Oil Cooler
5. (a) Applicable Construction Code Section III 1974 Edition, S74 Addenda, None Code Case (b) Applicable Edition of Section Xl Utilized for Repairs or Replacement Components 2001 Ed/2003 Ad (c)Section XI Code Cases used, None
6. Identification of Components Repaired or Replaced and Replacement Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built ~

Upper Oil Clr Perfex Division n/a n/a S/N 900401-1 Mounting Bracket 1978 Removed No Support Bolts (2)

Upper Oil Cir Nova Machine HT: US Y87951 n/a S/N 900401-1 Mounting Bracket Products Code: R563 2005 Installed No Support Bolts (2)

Upper Oil CIr Perfex Division n/a n/a S/N 900401-1 Sliding Support 1978 Removed No Studs (2)

Upper Oil CIr Nova Machine HI: 54678 n/a ~~~900401-1 Sliding Support Products Code: R564 2005 Installed No Stud (2)

Upper Oil CIr Perfex Division n/a n/a S/N 900401-1 Sliding Support 1978 Removed No Nuts (2)

Upper Oil CIt Nova Machine HI: 7201928 n/a S/N 900401-1 Sliding Support Products Code: VAR 2005 Installed No Nuts (2)

Upper Oil CIr Perfex Division n/a n/a S/N 900401-1 Sliding Support 1978 Removed No Jam Nuts (2)

Upper Oil CIt Nova Machine HI: 7201928 n/a S/N 900401-1 Sliding Support Products Code: R565 2005 Installed No Jam Nuts (2)

FORM NIS-2 SUPPLEMENTAL SHEET

1. Owner ExeIon Nuclear Date 3/13/06 Name 4300 Winfield Road, Warrenville, IL 60555 Sheet 4 of 4 Address
2. Plant Byron Nuclear Power Station Unit 00 Name 4450 N. German Church Road, Byron, IL 61010 Purchase Order No. 00083172 Release 00002 Address .

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

3. Work Performed by Westinghouse Electric Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable P0 Box 355 Pittsburgh PA 15230-0355 Expiration Date Not Applicable Address
4. Identification of System Reactor Coolant [RCI Spare Reactor Coolant Pump Motor Oil Coolers W76 Upper Oil Cooler
5. (a) Applicable Construction Code SectIon III 1974 Edition, S74 Addenda, None Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 2001 Ed/2003 Ad (c)Section XI Code Cases used, None
6. Identification of Components Repaired or Replaced and Replacement Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built Lower Oil Cit Support lonincs Inc. n/a n/a S/N 8062/63-2 Bracket Bolts (3) 1978 Removed No Lower Oil Cit Support Nova Machine HI: CR172120 n/a S/N 8062/63-2 2005 Installed No Bracket Bolts (2) Products Code: N Lower Oil CIt Bearing lonincs Inc. n/a n/a S/N 8062/63-2 Bracket Pipe Support 1978 Removed No Bolts (4)

Lower Oil CIt Bearing Dubose National HT: 57279 n/a S/N 8062/63-2 Bracket Pipe Support Energy Services Code: 14571 2003 Installed No Bolts (4)

(Final)

I DOCUMENT NO.: 3.0 REV. NO.,: 0 FORM NIS-2 OWNERS REPORT FOR REPAIRS OR REPLACEMENTS As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 09/17/06 Name 4300 Wlnfleld Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power StatIon Unit 01 Name 4450 N, German Church Road, Byron~jL Work Order No. 59499201 Address Repa~~ OrganizatiOn, P.O. No., Job No., etc.
3. Work Performed by NP S & W VENTURE Type Code Symbol Stamp Not ApplIcable Name Authorization No. Not Applicable 36400 S. Essex Road, WIlmington, IL 60481 ExpIration Date Not Applicable Address
4. IdentificatIon of System ResIdual Heat
5. (a) Applicable Construction Code ASME Section III 1974 EdItion, S74 Addenda, 1644 Rev. 7, 1651, 1682, 1683, 1685, 1686, 1728, 1729, 1734, N-108, N-180 Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (c)Section XI Code Case(s) NONE
6. IdentifIcation of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year k~elaNed (Yes cc No)

Component Manufacturer Serial No. No. Identification Built ~

Snubber, PSA Pacific 14850 N/A 1RHO2112S 1980 Removed Yes

(~SA-1/4) Scientific Snubber, Lisega Llsega 30500419 N/A 1RHO2112S 2005 Installed No 3018 001

7. Description of Work REPLACED SNUBBER
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 ExempttJ VT-3 Other ~ Pressure psi Test Temp. __________

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

FORM NIS-2 (Back)

9. Remarks WO 594992-01 A~~llC5DlC Manufacturers Data deports to oe attacnec CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stanip Not Applicable Certificate of No. Not Signed O~wie?sDesignee. 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 HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period

____________ to _____________ , and state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in this Owners 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 Owners 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 jL /5y~,

Inspectors Signature National Board, Stale Province, and Endorsements Date: ______________ ,20 06 (Final)

DOCUMENT NO.: 4.1 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTiVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 9/20/06 Name 4300 Wlnfield Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00792225-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 36400 S. Essex Road, Wilmington, IL 60481 Expiration Date Not Applicable Address
4. Identification of System RESIDUAL HEAT REMOVAL
5. (a) Applicable Construction Code ASME Section III 1971 Edition, S72 Addenda, None Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (c)Section XI Code Case(s) NONE
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built RELIEF VALVE Crosby 3 x4~ Valve&Gage N56904-OO-0012 N/A 1RH8708A 1975 Removed YES VALVE vaIv~~~ge N56904-O0-0013 N/A 1RH8708A 1975 Installed YES

7. Description of Work REPLACE RELIEF VALVE FOR 1RH8708A
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 378 psi Test Temp. 155 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO# 00792225-01 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of &uthorization No. Not Applicable Signed ~ ~ Cmrst Date _______,20 ~(~

or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period 3.p~ to ,/ ii. . p6 , and state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code, Section 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 Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property d age or~1ossof any kind arising from or connected with this inspection.

________________________ Commissions j~j/~ J/!rI Inspectors Signature National Board, State Province, and Endorsements Date: ,44k 3j7 ,20 ~~6

L DOCUMENT NO.:

3-1 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 9/18/06 Name 4300 WInfield Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 02 Name Work Order No. 911404-01 4450 N. German Church Road, Byron, IL Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not ApplIcable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System RH - RESIDUAL HEAT REMOVAL
5. (a) Applicable Construction Code ASME Section III 1974 Edition, S75 Addenda, NONE Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 EditionI2003 Addenda (C) Section Xl Code Case(s) NONE
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Nameof Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built STUDS REPUBLIC HT #97674 1 RH607 STEEL N/A 1979 REMOVED NO NUTS CASTLE HT #6057647 1 RH607 METALS N/A 1998 REMOVED NO STUDS Nova Machine HI Code R460 N/A CAT ID #44337 2005 INSTALLED NO Products HI: 7526262 1 RH607 NUTS Nova Machine HI: Q2280A CAT ID #30520

~ Products N/A 1 RH607 2006 INSTALLED NO

7. Description of Work REPLACE FLANGE STUDS AND NUTS DUE TO BORIC ACID CORROSION
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt D Other 0 Pressure n/a psi Test Temp. n/a Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks Work Order No. 911404-01 Applicable Manufacturers Data Heports to ~e attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not ApplIcable Certificate of A orization No. Not Applicable Signed ~ Date _______,20j~~

~~yr Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period

______________ to qi54 6 , and state that to the best of my knowledge and belief, t1~eC(wner has performed examinations and taken corrective measures described in this Owners 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 Owners 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 1It-JJ5~

Inspectors Signature National Board, State Province, and Endorsements Date: ~ /~ ,20 ~

(Final)

FORM NIS-2 OWNERS REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 8-29-05 Name 4300 Winfield Rd. Warrenvllle, II. 60555 Sheet I of I
2. Plant Byron Nuclear Power Station Unit 0 Name 4450 N. German Church Road, Byron, II. Purchase Order 00084690 Address Repa)r Oi~an~zatIon, P.O. No., Job No., etc.
3. Work Performed by FLOWSERVE Type Code Symbol Stamp Not Applicable Pw~e Authorization No. Not Applicable 4816 Worth P1. Charlotter, North Carolina Expiration Date Not Applicable
4. Identification of System (RH) Residual Heat
5. (a) Applicable Construction Code Section Ill 19 74 EdItion, S74 Addenda N528-1 Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and Replacement Components

~et ~E N.m.~ Nsmso( Mesiaet,.r Bawd 0th. Yew RsØacsd, CodsSlaniped Coi~,cnwd Uumi&*zv Sedl No. No. Idwd5~ B~t or f~c4.csment (Y~or No)

Locating Tabs on UTC 2714864 Stuffing Box Ingersoll Rand 91130 N/A No

,.~ NO. ~ 1~ Replacement Extension piece

7. Description of Work: Welded 8 locating tabs on Stuffing Box Extension piece, Cat lD# 1405802-1
8. Test Conducted: HydrostatIc 0 Pneumaticlj Nominal Operating Pressure Q None Reouired

____ Other El Pressure ______ psi Test Temp. ______ °F Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provlded (1) size is 8-1/2 in. x 11 In.,

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

This fonn his been ~ectron)ca1y generated.

ER-AA-330-009 Revision 2 Page 30 of 36 FORM NIS-2 (Back)

9. Remarks Facitily Evaluation # 00040795 CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and Replacement conforms to the rules of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not ApplIcable Signed Scott Esposito ~ Date 4- / Z ,20 06 CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission Issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT.

of Hartford~CT have inspecte~,the,componentsclescnbed in this Owners Report during the period ~ to ,and state that to the best of my knowledge and belief, the,~wnefhas performed exam inationsandtaken corrective measures described in the Owners 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 Owners 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~ aris from or ad with this inspection.

Commissions

~

Date ~ ,2006

DOCUMENT NO.: 4,0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY REV. No.: 0

-I As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nudear Date 9/27/06 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00783828-02 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Westinghouse Type Code Symbol Stamp Not Applicable Electric Company LLC Name Authorization No. Not Applicable P0 Box 355, PIttsburgh, PA. 15230-0355 Expiration Date Not Applicable Address
4. Identification of System Pressurizer (RY)
5. (a) Applicable Construction Code (Vessel) ASME Section III 19 71 EdItion, S73 Addenda, ~ Code Case 1528 Applicable Construction Code (Pipe) ASME Section III 1974 Edition, S75 Addenda, None Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (C)Section XI Code Case(s) (*) N-504-2 and N-638-1 APPROVED BY NRC, RR 13R-08
6. IdentIfication of Components Repaired or Replaced and Replacement Components:

Name of Name of Manufacturer National Other Year Corrected, ASME Code Component Manufacturer Serial No. Board No. Identification Built Removed, or Stamped

~ Installed (Yes or No)

PZR: 1721 1RYO1S, Surge Safe-End: Fit # 1 RY1 1A-14

~ Westinghouse ~g5e Line: W13580 1RYO1S, PN 1976 Installed YES Weld/Pipe 10350 SW1

7. Description of Work STRUCTURAL WELD OVERLAY ON PRESSURIZER SURGE NOZZLE PN SW~UNENo. 1RY11A-14
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 2233 psI Test Temp. 557 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI (back)

9. RemarkS Work Order No. 00783828 - 02 Applicable Manufacturers Data Reports to be attached

(*) Code Cases N-504-2 and N-638-1 invoked by Relief Request 13R-08, B&PV Code Case 2142-2 CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of A~iéioØ~tion Fj9/ Not Applicable Signed A4~Yi.%~ £4.~ø7 (~S2~COOIZ~/II-7~Y?~ Date 1~ ,20 06 Owner or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of IllinoIs and employed by HSB CT of Hartford, CT have inspected the components described In this Owners Report during the period

______________ to ______________ , and state that to the best of my knowledge and belief, the dwner has performed e~aminatIonsand taken corrective measures described in this Owners Report In accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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 - 1J54 Inspectors Signature National Board, State Province, and Endorsements Date: ,20 06

FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 09/27/06 Name 4300 WInfIeld Road, Warrenvllle, IL Sheet 1 of Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00783828-40 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 36400 S. Essex Road, Wilmington, IL 60481 Expiration Date Not ApplIcable Address
4. Identification of System Reactor Coolant PressurIzer (RY)
5. (a) Applicable Construction Code ASME Section Ill 19 74 EdItion, S74 Addenda, See Remarks Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 Edltlon/2003 Addenda (C) Section Xl Code Case(s) NONE
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Iristalled (Yes or No)

Component Manufacturer Serial No. No. Identification Built FIG 2956 Pipe Grinneil N/A N/A 1 RY09045C 1984 REMOVED NO Clamp Load Bolt (2)

FIG 2956 Pipe Anvil HT RF8782 N/A 1 RY09045C 2003 INSTALLED NO Clamp Load Bolt (2)

FIG 2956 Pipe Clamp Hex Nuts (6) Gnnnell N/A N/A 1RYO9O4SC 1984 REMOVED NO FIG 2956 Pipe Nova Machine HT: 8994826 N/A 1 RY09045C 2003 INSTALLED NO Clamp Hex Nuts (6) Products FIG 290 3/4 Grinnell N/A N/A 1 RY09045C 1984 REMOVED NO Wekiless Eyenut FIG 290 3/4 Anvil N/A N/A 1 RY09045C 2006 INSTALLED NO Weldiess Eyenut 3/4 Threaded Support Rod Grinnell N/A N/A 1 RY09045C 1984 REMOVED NO 3/4 Threaded Nova Machine HT: 230941 Support Rod Products Code: S213 N/A 1 RY09045C 2004 INSTALLED NO 3/4 Hex Nuts (2) Grlnnell N/A N/A 1RY09045C 1984 REMOVED NO 3/4 Hex Nuts (2) Nova Machine HT: S67159 N/A 1 RY09045C 2005 INSTALLED NO Products

7. Description of Work REPLACE PIPE CLAMP LOAD BOLTS/HEX HUTS, SUPPORT ROD, EYENUT AND HEX NUTS.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt 0 VT-3 Other ~ Pressure psi Test Temp.

Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks Work Order No. 00783828-40 Applicable Manufacturers Data tieports io oe attacneci Code Cases: 166 Rev 7, 1682, 1683, 1685, 1686, 1651, 1728, 1729, 1734, N-180, N-108, N-222, N-225 N-38, 1690, N-242-1, and n-247 CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of A onzation 0. Not Applicable Signed ~j Date _______,20 (DL CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period

______________ to _______________ , and state that to the best of my knowledge and belief, the O~nerhas performecfexaf~inationsand taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property clama e or a loss of any kind arising from or connected with this inspection.

_______________________ Commissions /~4 /I,g Inspectors Signature National Board, State Province, and Endorsements Date: Dee. 2( ,20 ~

L DOCUMENT No.: 4.0 REV. No.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 9/27/06 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00783828-45 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Westinghouse Electric Type Code Symbol Stamp Not Applicable Company LLC Name Authorization No. Not Applicable P0 Box 355, Pittsburgh, PA. 15230-0355 Expiration Date Not Applicable Address
4. Identification of System Pressurizer (RY)
5. (a) Applicable Construction Code ASME Section ifi 19 71 Edition, S73 Addenda, NB4643, Code Case (vessel) 1493-1, 1528 Applicable Construction Code (Pipe) ASME Section ifi 19 74 Edition, S75 Addenda, None Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (c)Section XI Code Case(s) (*) N-504-2 and N-638-1 APPROVED BY NRC, RB 13R-08
6. Identification of Components Repaired or Replaced and Replacement Components:

ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built PZR: 1721 Safe-End: HL #

I RYOIS, Spray P72S NozzleJDM s IRYO1C-~IRYOIS Weld/Safe -End/SS Westinghouse ~~ntdo W13580 1976 Installed YES PN-02-SW2 WektlConcenmc Reducer 91278-Reducer 3

7. Description of Work STRUCTURAL WELD OVERLAY ON PRESSURIZER SPRAY NOZZLE, 1RYOIS, PN-02-SW2ILINE IRYO1C-4
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 2233 psi Test Temp. 557 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI (back)

9. Remarks Work Order No. 00783828-45 Applicable Manutacturers Data Reports to be attached

(*) Code Cases N-504-2 and N-638-1 invoked by Relief Reauest 13R-08, B&PV Code Case 2142-2 CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol~tamp Not Applicable Certificate of Aut i~ffonNo Not Applicable Signed 1~t~ C~o14~?,%c. Date It.(lrF- ,20 06 Owner or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of illinois and employed by HSB CT of ~Hartford, CT have inspected the components described in this Owners Report during the period to , and state that to the best of my knowledge and belief, wner has performed examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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.

~Y~ Commissions /%4.. /,~9

  • Inspectors Signature National Board, State Province, and Endorsements Date: ~ if ,20 06

I DOCUMENT No.: 4.0 REV. No.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 9/27/06 Name 4300 WinfieldRoad, Warrenvile, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00783828-46 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Westinghouse Electric Type Code Symbol Stamp Not Applicable Company LLC Name Authorization No. Not Applicable P0 Box 355, PIttsburgh, PA. 15230-0355 Expiration Date Not Applicable
  • Address
4. Identification of System Pressurizer (RY)
5. (a) Applicable Construction Code ASME Section ifi 19 71 Edition, S73 Addenda, NB4643, Code Case (vessel) 1493-1, 1528 Applicable Construction Code (Pipe) ASME Section ifi 19 74 Edition, S75 Addenda, None Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (c)Section XI Code Case(s) (*) N-504-2 and N-638-1 APPROVED BY NRC, RR 13R-08
6. Identification of Components Repaired or Replaced and Replacement Components:

ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built PZR: 1721 IRYOIS, Relief Safe-End: I-It # IRYO2A-6,

~~-Enwss Westinghouse ~ Wl3580 1RYOIS, PN 1976 Installed YES Weld/45°Elbow 61378-6 SW3

7. Description of Work STRUCTURAL WELD OVERLAY ON PRESSURIZER SPRAY NOZZLE, 1RYO1S, PN-03-SW3 RELIEF NOZZLE LINE 1RYO2A-6. WELD OVERLAY HAD SEVERAL AREAS REQUIRING REPAIR DUE TO UNACCEPTABLE FLAWS.

THESE FLAWS WERE REMOVED AND CORRECTED, W/O 783828 TASK 74.

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 2233 psi Test Temp. 557 °F Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI (back)

9. Remarks Work Order No. 00783828-46 Applicable Manufacturers Data Reports to be attached

(*) Code Cases N-504-2 and N-638-1 invoked by Relief Request 13R-08, B&PV Code Case 2142-2 CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Auth~j~tJ~n No. Not Applicable Signed ,Zltit ~o&Ob../M9v~.. Date )t~Jp) ,20 06 Owner or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartjord, CT have inspec~dthe components described in this Owners Report during the period to ,and state that to the best of my knowledge and belief, ttce O~nerhas performed exami~ationsand taken corrective measuresdescribed in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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.

~%ø~~*~ Commissions 14~/j rf 5Board, Inspectors Signature National State Province, and Endorsements Date: j~4~/~ g. ,20 06

[ DOCUMENT No.: 4.0 REV. No.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 9/27/06 Name 4300 Winfield Road, Warrenvitle, Ii Sheet 1 of Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00783828 -47 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Westinghouse Electric Type Code Symbol Stamp Not Applicable CompanyLLC Name Authorization No. Not Applicable P0 Box 355, Pittsburgh, PA. 15230-0355 Expiration Date Not Applicable Address
4. Identification of System Pressurizer (RY)
5. (a) Applicable Construction Code ASME Section ifi 19 71 Edition, S73 Addenda, NB4643, Code Case (vessel) 1493-1, 1528 Applicable Construction Code (Pipe) ASME Section ffi 19 74 Edition, S75 Addenda, None Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (c)Section XI Code Case(s) (*) N-504-2 and N-638-1 APPROVED BY NRC, RR 13R-08
6. Identification of Components Repaired or Replaced and Replacement Components:

ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built PZR: 1721 IRYO1S, Safety Safe-End: Ht.

A Nozzle/DM # P72S IRYO3AA-6, Weld/Safe Westinghouse Safety A~ W13580 IRYOIS, PN 1976 Installed YES End/SS Weld/45° Elbow: SW4 Elbow 92378-9

7. Description of Work STRUCTURAL WELD OVERLAY ON PRESSURIZER , SMFETY NOZZLE PN SW4- LINE 1RYO3AA-6. WELD OVERLAY HAD SEVERAL AREAS REQUIRING REPAIR DUE TO UNACCEPTABLE FLAWS. THESE FLAWS WERE REMOVED AND CORRECThD, W/O 783828 TASK 73.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal OperatingPressure ~ Exempt 0 Other 0 Pressure 2233 psi Test Temp. 557 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI (back)

9. Remarks Work Order No. 00783828 -47 Applicable ManufacturersData Reports to be attached

(*) Code Cases N-504-2 and N-638-1 invoked by Relief Request 13R-08, B&PV Code Case 2142-2 CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Autho t~ No. ,~,,, Not Applicable Signed ~.vF( (SCit ~ Date 12/20 ,20 06 Owner or Owners Designee, Title CERTIFICATE OF INSER VICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspec)ed the components described in this Owners Report during the period to , and state that to the best of my knowledge and belief, the Ownerhas performed examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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.

~ Inspectors Signature Commissions National Board, State Province, and Endorsements Date: .2P ,20 06

DOCUMENT No.: 4.0 REV. No.: 0 1 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 9/27/06 Name 4300 Winfield Road, Warrenvifle, IL Sheet 1 of Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00783828-48 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Westinghouse Electric Type Code Symbol Stamp Not Applicable Company LLC Name Authorization No. Not Applicable P0 Box 355, Pittsburgh, PA. 15230-0355 Expiration Date Not Applicable Address
4. Identification of System Pressurizer (RY)
5. (a) Applicable Construction Code ASME Section ifi 19 71 Edition, S73 Addenda, NB4643, Code Case (vessel) 1493-1, 1528 Applicable Construction Code (Pipe) ASME Section ifi 19 74 Edition, S75 Addenda, None Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (c)Section XI Code Case(s) (*) N-504-2 and N-638-1 APPROVED BY NRC, RR 13R-08
6. Identification of Components Repaired or Replaced and Replacement Components:

ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built PZR: 1721 ~

IRYOIS, Safety B Safe-End: Ht. # 1RYO3AB-6,

-~~s Westinghouse ~ W13580 IRYOIS, PN 1976 Installed YES Weld/45°Elbow EIbow~92378-8 SW5

7. Description of Work STRUCTURAL WELD OVERLAY ON PRESSURIZER SAFETY NOZZLE, PN SW5 LINE 1RYO3AB-6
8. Test Conducted:. Hydrostatic 0 Pneumatic 0 Nominal OperatingPressure ~ Exempt 0 Other 0 Pressure 2233

___________ psi Test Temp. 557 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI (back)

9. Remarks Work Order No. 00783828-48 Applicable ManufacturersData Reports to be attached

(*) Code Cases N-504-2 and N-638-l invoked by Relief Request I3R-08, B&PV Code Case 2 142-2 CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol~tamp Not Applicable Certificate of Autl/riz~jonNo Not Applicable Signed 4$~f\ (~L& ~ Date I LII! ,20 06 O~~ejor Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of illinois and employed by HSB CT of Hartford, CT have inspec the components described in this Owners Report during the period to ,and state that to the best of my knowledge and belief, th(O~erhas performed examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspectornor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damap or a loss of any kind arising from or connected with this inspection.

~94~*~r Commissions /4~-/L/41 Inspectors Signature National Board, State Province, and Endorsements Date: DeLJt ,20 06

DOCUMENT No.: 4.0 REV. No.:

FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI Owner Exelon Nuclear Date 9/27/06 Name 4300 Winfleld Road, Warrenvifle, IL Sheet 1 of 1 Address Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00783828-49 Address Repair Organization, P.O. No., Job No., etc.

Work Performed by Westinghouse Electric Type Code Symbol Stamp Not Applicable Company LLC Name Authorization No. Not Applicable Box 355, Pittsburgh, PA. 15230-0355 Expiration Date Not Applicable Address Identification of System PRESSURIZER (RY)

Applicable Construction Code ASME Section ifi 19 71 Edition, S73 Addenda, NB4643, Code Case (vessel) 1493-1, 1528 Applicable Construction Code (Pipe) ASME Section ffi 19 74 Edition, S75 Addenda, None Code Case Applicable Edition of Section XI Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda Section XI Code Case(s) (°)N-504-2 and N-638-1 APPROVED BY NRC, RR 13R-08 Identification of Components Repaired or Replaced and Replacement Components:

ASME Corrected, Code National Removed, or Stamped of Name of Manufacturer Board Other Year Installed (Yes or No)

Manufacturer Serial No. No. Identification Built PZR: 1721 Safety Safe-End: Ht.

  1. P72S IRYO3AC-6, End/SS Westinghouse Safety C W13580 1RYOIS, PN 1976 Installed YES Elbow: 92378- SW6 Elbow
7. Description of Work STRUCTURAL WELD OVERLAY ON PRESSURIZER 1RYO1S, SAFETY NOZZLE, PN-06-SW6 LINE 1RYO3AC-6. WELD OVERLAY HAD SEVERAL AREAS REQUIRING REPAIR DUE TO UNACCEPTABLE FLAWS. THESE FLAWS WERE REMOVED AND CORRECTED, W/O 783828 TASK 72.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 2233 psi Test Temp. 557 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, arid (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisionsof the ASME Code Section XI (back)

9. Remarks Work Order No. 00783828-49 Applicable Manufacturers Data Reports to be attached

(*) Code Cases N-504-2 and N-638-1 invoked by Relief Request 13R-08, B&PV Code Case 2142-2 CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Author t~ No. Not Applicable Signed Date 12/20 ,20 06 Owner or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have in~pectedthe components described in this Owners Report during the period to , and state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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.

$7,~~4i~r~ Commissions Inspectors Signature National Board, State Province, and Endorsements Date: J)~?/1 ,20 06

DOCUMENT No.: 4.2 REV No.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 10/13/06 Name 4300 WInfield Road, Warrenvllle, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00783828-72 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Westinghouse Electric Type Code Symbol Stamp Not ApplIcable Company LLC Name Authorization No. Not Applicable P0 Box 355, PIttsburgh, PA. 15230-0355 Expiration Date Not Applicable Address
4. Identification of System PRESSURIZER (RY)

(pipe) ASME Section ifi, 1974 Edition, S75 Addenda

5. (a) Applicable Construction Code ASME Section III 19 71 Edition, S73 Addenda, NB4643, Code Case (vessel) 1493-1, 1528 (b) Applicable Edition of Section XI Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (C) Section Xl Code Case(s) (*) N-504-2 and N-638-1 APPROVED BY NRC,, RR 13R-08
6. Identification of Components Repaired or Replaced and Replacement Components:

ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built PZR: 1721 1RYO1S, Safety Safe-End: Ht.

C Nozzle/DM # P72S 1 RYO3AC-6, Weld/Safe Westinghouse Safety C W13580 1RYO1S, PN 1976 Corrected YES End/SS Weldi~45° Elbow: 92378- SW6-R1 Elbow 4

7. Description of Work STRUCTURAL WELD OVERLAY ON PRESSURIZER 1RYO1S, SAFETY NOZZLE, PN-06-SW6-R1 - LINE 1RY03AC~6N
8. Test Conducted: Hydrostatic D Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 2233 psi Test Temp. 557 ¶ Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NlS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As RequIred by the Provisions of the ASME Code Section XI (back)

9. Remarks Work Order No. 00783828-72 Applicable Manufacturers Data Reports to be attached

(*) Code Cases N-504-2 and N-638-1 invoked by Relief Request 13R-08, B&PV Code Case 2142-2 CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stam Not Applicable Certificate of Author t No. Not ApplIcable Signed ~tfCK ~ Date 12/20 ,20 06 O~ri~ or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period

_____________ to ______________ , and state that to the best of my knowledge and belief, the dwner has perform6d ~xamlnations and taken corrective measures described in this Owners 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 Owners 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 /11 -/~t5~f Inspectors Signature National Board, State Province, and Endorsements Date: __________,2006

DOCUMENT No.: 4.2 REV. No.: 0 1 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 10/10/06 Name 4300 Winfield Road, Warrenvllle, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00783828-73 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Westinghouse Electric Type Code Symbol Stamp Not Applicable Company_LLC Name Authorization No. Not Applicable P0 Box 355, PIttsburgh, PA. 15230-0355 Expiration Date Not Applicable Address
4. Identification of System PRESSURIZER (RY)

(pipe) ASME Section ifi, 1974 Edition, S75 Addenda

5. (a) Applicable Construction Code ASME Section III 19 71 Edition, S73 Addenda, NB4643, Code Case (vessel) 1493-1, 1528 (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (C)Section XI Code Case(s) (*) N-504-2 and N-638-1 APPROVED BY NRC, RR l3R-08
6. Identification of Components Repaired or Replaced and Replacement Components:

ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built PZR: 1721 1 RYO1 S, Safety Safe-End: Ht.

A Nozzle/DM # P72S 1RYO3AA-6, Weld/Safe Westinghouse Safety A Wi3580 1 RYO1 5, PN 1976 Corrected YES End/SS Weld/45° Elbow: 92378- SW4-R1 Elbow 9

7. Description of Work STRUCTURAL WELD OVERLAY ON PRESSURIZER IRYO1S, 1A SAFETY NOZZLE, PN-04-SW4-R1 - LINE 1 RYO3AA-6
8. Test Conducted: Hydrostatic D Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 2233 psi Test Temp. 557 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl (back)

9. Remarks Work Order No. 00783828-73 Applicable Manufacturers Data Reports to be attached

(*) Code Cases N-504-2 and N-638-1 invoked by Relief Request 13R-08, B&PV Code Case 2142-2 CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Aut~ji~?ion No.J Not Applicable Signed iZ~,2~tt C~~LO~it~i. Date 12/20 ,20 06 Owner or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of IllInois and employed by HSB CT of Hartford, CT have inspec~dthe components described in this Owners Report during the period

_____________ to /44,~/6~.6 , and state that to the best of my knowledge and belief, the dwner has perform6d examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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 _______________________________

Inspectors Signature National Board, State Province, and Endorsements Date: ___________,20 06

DOCUMENT No.: 4,2 REV. No,: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code SectIon XI

1. Owner Exelon Nuclear Date Name 4300 Winfleld Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00783828-74 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Westinghouse Electric Type Code Symbol Stamp Not Applicable Company LLC Name Authorization No. Not Applicable P0 Box 355, Pittsburgh, PA. 15230-0355 Expiration Date Not Applicable Address
4. Identification of System PRESSURIZER (RY)

(pipe) ASME Section ifi, 1974 Edition, S75 Addenda

5. (a) Applicable Construction Code ASME Section III 19 71 Edition, S73 Addenda, NB4643, Code Case (vessel) 1493-1, 1528 (b) Applicable Edition of Section XI Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (C) Section Xl Code Case(s) (*) N-504-2 and N-638-1 APPROVED BY NRC, RR l3R-08
6. Identification of Components Repaired or Replaced and Replacement Components:

ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built PZR: 1721 1RYO1S, Relief Safe-End: Ht. # 1 RYO2A-6 Westinghouse W13580 1RYO1S, PN 1976 Corrected YES a~~-~txi/ss ~

WekV45°Elbow 61378-6 SW3R1

7. Description of Work STRUCTURAL WELD OVERLAY ON PRESSURIZER 1 RYO1 5, PORV NOZZLE, PN-03-SW3-R1 - LINE 1RYO2A-6
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 2233 psi Test Temp. 557 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2in. 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-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI (back)

9. Remarks Work Order No. 00783828-74 Applicable Manufacturers Data Reports to be attached --

(*) Code Cases N-504-2 and N-638-1 invoked by Relief Request 13R-08, B&PV Code Case 2142-2 CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symboi,Stamp Not Applicable Certificate of Auth/~zftfonNo. / Not Applicable Signed A2~1~.4e~4~7 jZ~ti( CO.I*7~ Date gvi,q ,20 06 Owner or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have insyected the components described in this Owners Reportduring the period

_____________ to ______________ , and state that to the best of my knowledge and belief, the wner has performed examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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 /~/~.4%ff inspectors Signature National Board, State Province, and Endorsements Date: ~j A/ ,20 06

DOCUMENT No: 4.2 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 10-12-06 Name 4300 Winfleld Rd. Warrenville, II. 60555 Sheet I of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, Il. Work Order No. 00783828-85 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mech. Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System RY REACTOR COOLANT PRESSURIZER
5. (a) Applicable Construction Code Section III 1974 Edition, S74 Addenda See Remarks Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 2001 Ed / 2003 Ad (c) Applicable ASME Section XI Code Cases: ~~None
6. Identification ofComponents Repaired or Replaced and Replacement Components National Repaired, ASME Name of Name of Manufacturer Board Other Year Replaced, Code; Component Manufacturer Serial No. No. Identification Built or Stamped Replacement (Yes or No)

HEX NUT, CI.AMP GRINNELL N/A N/A 1RYO9O3OC N/A REMOVED NO HEX NUT, ~AMP ANVIL N/A N/A CAT ID 37034 N/A INSTALLED NO

7. Description of Work INSTALLED PIPE CLAMP HEX NUT.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating PressureD VT-3 Other 0 Pressure______ psi Test Temp.______________ °F Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.,

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

This focm has been ekctron,cally geI~rated.

J DOCUMENT No: 4.2 REV. NO.: 0 FORM NIS-2 (Back)

9. Remarks Work Order No. 00783828-85 Annhs,hIe Mam,f5etn,~rsI)ntn Pn.,.tc km N.

Constant Support Code Cases: 1644 Rev. 7, 1682, 1683, 1685, 1686, 1651, 1728, 1729, 1734, N-180, N-108, N-225, N-38,1690, N-242-1, and N-247 CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT conforms to the rules of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed___________________________________________ Date /Z.~d ,2006

(~O~&. Dn~ Thk CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by H.S.B. CT of Hartford, Ct. have inspcte)l the components described in this Owners Report during the period___________ to___________________ and state that to the best of my knowledge and belief, the Owner has performed 6xaminations and taken corrective measures described in the Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or prop~rt~ dama e of a loss of any kind arising from or connected with this inspection.

~ I..p.no.. 51.

Commissions ji/-/I5~

N.i.~ B~ Sk~,

Pro,~ ~d Ead,.~

Date ke. h~ ,2006

I DOCUMENT NO.: 4.1 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As RequIred by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 9/15/06 Name 4300 WInfleld Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00802596-01 Address Repair OrganizatIon, P.O. No., Job No., etc.
3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not ApplIcable 36400 S. Essex Road, Wilmington, IL 60481 Expiration Date Not Applicable Address
4. Identification of System Reactor Coolant Pressurizer (RY)
5. (a) Applicable Construction Code ASME Section III 19 71 Edition, W72 Addenda, NONE Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (C) Section Xl Code Case(s) NONE
6. identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Sesial No. No. Identification Built REUEF VALVE CROSBY VALVE N56964-O0-0047 N/A 1 RY8O1OB 1976 REMOVED YES REUEF VALVE CROSBY VALVE rs~s6~.oo~oO89 N/A 1RY8O1OB 1977 INSTALLED YES

7. Description of Work RELACE RELIEF VALVE LESS INLET NUTS PER PM REQUIREMENTS
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt 0 Other 0 Pressure 2233 psi Test Temp. 557 ¶ Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81k 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-2 (Back)

9. Remarks WO 00802596-01 Applicable Manufacturers Data ~eportsto be attacrieo CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not ApplIcable Certificate of Aut~orIzationNo. Not Applicable Signed ~ <~I~ ~r~L Date i~4c ,20 06 Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel inspectors and the State or Province of IllInois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period

/~ to ,/ ~q9. ~ , and state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners Report.

Furthermore, neither the Inspector nor hIs employer shall be liable in any manner for any personal injury or property dampge or a loss of any kind arising from ~rconnected with this inspection.

______________________ Commissions ~Z1~~~(54 Inspectors Signature National Board, State Province, and Endorsements Date: A#tF~ ~ ,20 06 (Final)

L DOCUMENT NO.: 4-1 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY

. 1. Owner As Required by the Provisions of the ASME Code Section XI Exelon Nuclear Name Date I /a i 4300 WInfield Road, Warrenvllle, IL Sheet 1 of 1 Address

2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00836102-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable MaIntenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identificatiori of System RY - REACTOR COOLANT PRESSURIZER
5. (a) Applicable Construction Code ASME Section Ill 19 71 Edition, S72 Addenda, 1649 Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 Edltlon~2003Addenda (c) Section Xl Code Case(s) NONE
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built VALVE PLUG COPES 88-5 1 RY456 VULCAN N/A 1990 REMOVED NO VALVE PLUG COPES 9821-96590-1-3 CAT ID #35955 VULCAN (986) N/A 1RY456 HT# 24696 1998 INSTALLED NO

7. Description of Work REPLACE VALVE TRIM
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt 0 Other 0 Pressure ___________ psi Test Temp. ____________

Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks Work Order No. 00836102-01 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of1A~thorizationNo. Not Applicable Signed flj~4 CL . LLL JI~IQRCboRiIA),t 7Zf~ Date _______,20 O~.

O~ or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of IllInois and employed by HSB CT of ,Har3ford, CT have ins9ecte~~I the components described in this Owners Report during the period

_____________ to ______________ , and state that to the best of my knowledge and belief, the Owner has performed 6xaminations and taken corrective measures described in this Owners 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 Owners Report.

Furthermore, neither the inspector nor his employer shall be liable in any manner for any personal injury or property damag~e a loss of any kind arising from or connected with this inspection.

________________________ Commissions ________________________

Inspectors Signature National Board, State Province, and Endorsements Date: /4&. r2/ ,20 Qh,

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

1. Owner Exelon Nuclear Date 6/23/05 Name 4300 WinfIeld Rd. Warrenville, II, 60555 Sheet I of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, Ii. Work Order No. 00402990-01 Address Repair Organizateon, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, II. Expiration Date Not Applicable Address
4. Identification of System STATION AIR [SA]
5. (a) Applicable Construction Code Section III 1986 Edition, 1987 Addenda,( VALVE) Code Case NONE 19 74 S/75 (PIPE)

(b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89 (c) Applicable ASME Section XI Code Cases: _N-416-1

6. Identification of Components Repaired or Replaced and Replacement Components National Repaired, ASME Name of Nvne of Mamifacturer Boacd Other Year Repl*ced, Codç Stan~ed Con~oncnt Manufacturer Serial No. No. Identification Built or Replacement (Yen or No)

VALVE 1 KEROTEST TKD4-23 11,581 1SA181C 1976 REPLACED YES VALVE 2 FLOWSERVE 47AZL N/A ISAI8IC CAT ID# 1384035 2004 REPLACEMENT YES 2 3004 S.W.R.F. WESTERN FORGE HT#3M40774 N/A ISA77BC FLANGE AND FLANGE C0 CODE: BPQ-A-2 CAT ID#24465 2004 REPLACEMENT NO STUDS-5/8-I 1 NOVA MACHINE HT#224938 N/A ISA77BC THD. ROD PRODUCTS CORP CAT ID#25042 2004 REPLACEMENT NO NUTS-5/8-ll NOVA MACHINE HT#7220464 N/A ISA77BC PRODUCTS CORP CAT 1D~37029 2004 REPLACEMENT NO 2X1 INSERT CONSOLIDATED HT#021J N/A ISA77BC POWER SUPPLY CAT ID#27472 2004 REPLACEMENT NO

7. Description of Work REPLACE 1 CHECK VALVE W/ 2 FLANGED CHECK VALVE-ISAI8IC PER EC# 79847.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal OperatingPressure ~

Other 0 Pressure 245 psi Test Temp. 87.4 °F Note: Supplemental sheets in form oflists, sketches, or drawings may be used, provided (I) size is 8-1/2 in. x 11 in.,

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

This form has been electronically generated.

FORM NIS-2 (Back)

9. Remarks Work Order No. 00402990-01 Applicable Manutacturers l)ata Reports to be attachen CERTIFICATE OF COMPLIANCE We certif~that the statements made in the report are correct and this REPLACEMENT conforms to the rules of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate ofAuthorization No. Not Applicable Expiration Date Not Applicable Signed O~

~

O~CaDna~ien, ate C..t..L Date ~/7 ,20 ~

CERTIFICATE OF INSER VICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT.

of Hartford, CT have inspect~dth~.componentsdescnbed in this Owners Report during the period ~ to , and state that to the best of my knowledge and belief, th~Owner has performed examinations and tákei~orrectivemeasures described in the Owners Report n 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 measuresdescribed in this Owners Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for ~nypersonal injury or property damage or a loss of any kind arising from or connected with t Is inspecti a

Commissions /~.- National

~f$i(

d, Slate PTo,mon. ant badulnonnia Date t~~1 9 ,20 ~

DOCUMENT NO.: 8.0 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIRIREPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 9/20/06 Name 4300 Wlnfleld Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00790082-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 36400 S. Essex Road, Wilmington, IL 60481 Expiration Date Not Applicable Address
4. Identification of System SD STEAM GENERATOR BLOWDOWN
5. (a) VALVE BODY ASME Section Ill 19 74 Edition, W75 Addenda, NO Code Case Applicable Construction Code PIPING Applicable

- ASME Section III 19 74 Edition, S75 Addenda, NO Code Case Construction Code (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 Edltion/2003 Addenda (c) Section Xl Code Case(s) NONE

6. Identification of Components ASME

. Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built VALVE BODY MASONEILAN D-313-1 N/A 1979 REMOVED NO VALVE BODY MASONEILAN N00196-3-7 N/A CAT ID #25948 1979 INSTALLED NO 2 SCH. 80 HUNTER HT~AA N/A 1SDO1CH 1984 REM VED NO PIPE CORP. . S-SD-001-27-3A 2 SCH. 80 US STEEL HT: A82900 N,A 2006 INSTALLED NO CAT ID #24507

7. Description of Work REPLACE VALVE BODY & ASSOCIATED PIPING
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 1080 psi Test Temp. 556 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks Work Order No. 00790082-01 Applicable Manufacturers Data Neports to be attactieci CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of &uthoriz~j9nNo. Not Applicable Signed ~ç~ S. ~ Date I t/2i.~ ,20 °I.

or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have in ed the components described in this Owners Report during the period

______________ to i// /~ , and state that to the best of myknowledge and belief, the ocvner has performe examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage o a loss of any kind arising from or connected with this ins ection.

_____________________ Commissions IlL JJ5~

Inspectors Signature National Board, State Province, and Endorsements Date: ~ j.~ ,20 ~

T DOCUMENT NO.: 5A REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 9/21/06 Name 4300 Wlnfleld Road, Warrenvllle, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power StatIon Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00790082-11 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable MaIntenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System SD STEAM GENERATOR BLOWDOWN
5. (a) Applicable Construction Code ASME Section Ill 1974 Edition, W75 Addenda, NONE Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 EdItlon/2003 Addenda (C) Section Xl Code Case(s) NONE
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built MASONEILAN N320189-048-6 1SDO54D VALVE PLUG DRESSER 87367-22 N/A 1987 REMOVED NO MASONEILAN S/N: 070134-9 / N/A 1SDO54D VALVE PLUG DRESSER CAT ID #29440 2006 INSTALLED NO BODY STUDS MASONEILAN MK #B7T N/A 1SDO54D 1979 REMOVED NO INTERNATIONAL MASONEILAN HT: 8869139 1SD0540 NO BODY STUDS DRESSER HT COD~:D3 N/A CAT ID #25886 1996 INSTALLEp MASONEILAN MK #2HT 1SDO54D NUTS INTERNATIONAL N/A 1979 REMOVED NO NOVA MACHINE HT: 8994826 1SDO54D NUTS PRODUCTS CODE: OJR/D805 N/A CAT ID #37033 2003 INSTALLED NO

7. Descnption of Work REPLACE VALVE PLUG, STUDS & NUTS. WELD VALVE STEM TO VALVE PLUG.

VALVE BODY TO BE REPLACED UNDER TASK 01 OF THIS WORK ORDER (SEPARATE RRR/NIS-2).

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 1080 psi Test Temp. 556 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks Work Order No. 00790082-11 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of thorization No. Not Applicable Signed 5/~l-..~ ~ cci~j Date Ij/~ ,20 ~

15~i~9 or Owners Designee, Trite CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of IllInois and employed by HSB CT of Hart?rd, CT have in~pecJedthe components described in this Owners Report during the period

_____________ to ///~~Ø~ , and state that to the best of my knowledge and belief, thlOWher has performedex~fninationsand taken corrective measures described In this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or pr~pertydan~a or a !oss of any kind arising from or connected with this inspection.

_______________________ Commissions /tI-jI$i Inspectors Signature National Board, State Province, and Endorsements Date: ~ j: .20 ~6

DOCUMENT NO.: DOC #5A REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner ExeIon Nuclear Date 09/26/06 Name 4300 WInfleld Road, Warrenvllle, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00792341-07 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not ApplIcable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System SD STEAM GENERATOR BLOWDOWN
5. (a) Applicable Construction Code ASME Section III 1974 Edition, W75 Addenda, NO Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 Edltlon/2003 Addenda (c)Section XI Code Case(s) NONE
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built VALVE PLUG MASONEILAN N.00196-3-3 N/A 1SDOO2A 1988 REMOVED NO VALVE PLUG MASONEILAN CAT ID#

B1602H-9 0000030848 2006 INSTALLED NO

7. Description of Work REPLACE VALVE PLUG
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt ~

Other 0 Pressure ___________ psi Test Temp.

Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2in. 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-2 (Back)

9. Remarks Work Order No. 00792341-07 Applicable Manufacturers Data~Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of AL4J~iorizationNo. Not ApplIcable Signed (~~N

\~

~ or Owners Designee, Title Date ) if? ,20 L~(i~

CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have in9pe~ptedthe components described in this Owners Report during the period

______________ to ______________ , and state that to the best of my knowledge and belief, the Owner has performed eiaminations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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 __________________________

Inspectors Signature National Board, State Province, and Endorsements Date: ,V1/ /~/ ,20 e6 (Final)

DOCUMENT NO.: DOC #5A REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 9/21/06 Name 4300 Winfield Road, Warrenvllle, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00792347-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron MechanIcal Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not ApplIcable Address
4. Identification of System SD STEAM GENERATOR BLOWDOWN
5. (a) Applicable Construction Code ASME Section III 1974 Edition, W75 Addenda, NO Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 Edltlon/2003 Addenda (c) Section Xl Code Case(s) NONE
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification BrUit VALVE PLUG MASONEILAN HT #A12478-5 N/A 1SDOO2H 1988 REMOVED NO VALVE PLUG MASONEILAN S37946-6 N/A CAT lD#29440 2006 INSTALLED NO 1SDOO2H

7. Description of Work REPLACE VALVE PLUG
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt ~

Other 0 Pressure n/a psi Test Temp. n/a Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks Work Order No. 00792347-01 Applicable Manufacturers Data tiepons to ~e auacnea CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Au orizati No. Not Applicable Signed Date I(/t , 20 ot.

Owne Owners Designee, TItle CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspec~edthe components described in this Owners Report during the period

_____________ to ______________ , and state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in this Owners 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 Owners 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 ~

Inspectors Signature National Board, State Province, and Endorsements Date: ,44r /5 ,20 p6 (Final)

[~CUMENT NO. 4-2 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 9/19/06 Name -

4300 WInfleld Road, Warrenvllle, IL Sheet 1 of 1 Address

2. Plant Byron Nuclear Power Station Unit 1 Name 4450 N. German Church Road, Byron, IL Work Order No. 00819715-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron MechanIcal Type Code Symbol Stamp Not ApplIcable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Apollcable Address
4. Identification of System SD Steam Generator Blowdown
5. (a) Applicable Construction Code ASME Section Ill 1974 Edition, W175 Addenda, None Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity: 2001 Edltlon/2003 Addenda (C) Section Xl Code Case(s) None
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built Stern/Plug Masoneilan- S/N 87367-7 N/A ETN: 1SDO54F 1987 Removed No Assembly Dresser Stern/Plug Masoneilan- S/N S37946-8 ETN: 1SDO54F Assembly Dresser N/A Caty/id: 2004 Installed No 0001405248-1

7. Description of Work Replace Plug/Stem assembly.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt ~

Other 0 Pressure N/A psi Test Temp. N/A Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO 0081971 5-01 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Aut~orization o. Not Applicable Signed ~ç~ ~R- ~ Date ________,20 i4~

Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have in,pected the components described in this Owners Report during the period

_____________ to ______________ , and state that to the best of my knowledge and belief, the ocvner has performedexaminations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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 ________________________

Inspectors Signature National Board, State Province, and Endorsements Date: /P~, 1/ .20 O&

ER-AA-330-009 Revision 4 Page 31 of 39

[ DOCUMENT NO.: N/A REV. NO.: N/A FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 9/23/06 Name 4300 WinfIeld Road, Warrenvllle, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00741277-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not ApplIcable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System SI SAFETY INJECTION
5. (a) Applicable Construction Code ASME Section III 1971 Edition, W72 Addenda, NONE Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity: 2001 Edltion/2003 Addenda (c) Section Xl Code Case(s) NONE
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built VALVE COVER KEROTEST S/N: KYA5-3 9568 1SI8900D 1976 INSTALLED YES

7. Description of Work INSTALL BODY TO CAP SEAL WELD
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 2240 psi Test Temp. 557 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

ER-AA-330-009 Revision 4 Page 31 of 39 FORM NIS-2 (Back)

9. Remarks Work Order No. 00741277-01 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Aut~orizati~p.,No. Not Applicable Signed (iT~\.\ ~9~~ ~ ~ Date _________ ,20 ~Z

~ L.. ~ 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 HSB CT of Hartford, CT have inspect,d the components described in this Owners Report during the period

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

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or prop rty damage or a loss of any kind arising from or connected with this inspection.

__________________________ Commissions __________________________

Inspectors Signature National Board, State Province, and Endorsements Date: ,4/~4, 4 ,20 ~

DOCUMENT NO.: 2-1 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI Owner Exelon Nuclear Date 09/23/06 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of 1 Address Plant Byron Nuclear Power Station Unit 01 Name 4450_N. German Church Road, Byron, IL Work Order No. 00741277-08 Address RepairOrganization, P.O. No., Job No., etc.

Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address Identification of System~ SI SAFETY INJECTION (a) Applicable Construction Code ASME Section Ill 1971 Edition, W72 Addenda, N/A Code Case Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 Edition/2003 Addenda Section Xl Code Case(s) N/A Identification of Components ASME Corrected, Code National Removed, or Stamped of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built CHECK KEROTEST KYA5-3 9568 1SI8900D 1976 CORRECTED YES

7. Description of Work EXCAVATE BASE METAL NDE INDICATION ON CAP REFERENCE EC#362682
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 2240 psi Test Temp. 557 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO# 741 277-08 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Au~orizationNo. Not Applicable Signed ~- ~ Date _______ ,20 oç.

Owners Designee. Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period

_____________ to ______________ , and state that to the best of my knowledge and belief, tI(e O~nerhas performed ~xa~inations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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 L -/1541 Inspectors Signature National Board, State Province, and Endorsements Date: A/g~ p.f ,20 ,~4

[~ DOCUMENT NO.: 4-1 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 09/19/06 Name 4300 Wlnfield Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 1 Name 4450 N. German Church Road, Byron, IL Work Order No. 00870274-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable MaIntenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System SI Safety Injection
5. (a) Applicable Construction Code ASME Section Ill 19 71 Edition, W/72 Addenda, 1553 Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 Edltlon/2003 Addenda (c)Section XI Code Case(s) None
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built Dise for 6 Swing Westinghouse HT #65800 EPN: 1S18818C SIN: 2045 NJA 1976 A emoved NO Check Valve.

Disc for 6 Swing Westinghouse HT# 276470 ,~ EPN: 1S18818C Check Valve. S/N RP-2003 fl a

7. Description of Work Replace the check valve disc for better seating.
8. Test Conducted: Hydrostatic 0 Pneumatic [1 Nominal Operating Pressure 0 Exempt ~

Other 0 Pressure ___________ psi Test Temp.

Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks Reference WO 00870274-01.

Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Signed Date _________ ,20 ps,,

Owne or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Ha ord, CT have ins ed the components described in this Owners Report during the period

______________ to _______________ , and state that to the best of my knowledge and belief, t e ner has perform ex inations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code, Section Xi.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property dama e or alo of any kind arising from or connected with this inspection.

______________________ Commissions Ia - /IS~

Inspectors Signature National Board, State Province, and Endorsements Date: ~t .20

I DOCUMENT NO.: 5.2 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 09/16/06 Name 4300 Winfield Road, Warrenville. IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00890987-09 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 36400 S. Essex Road, Wilmington, IL 60481 Expiration Date Not Applicable Address
4. Identification of System SI (SAFETY INJECTION)
5. (a) Applicable Construction Code ASME Section lii 1974 Edition, S75 Addenda, none Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (c) Section Xl Code Case(s) NONE
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built CBI contract N/A 1SIO6AA-24 END BELL FTG CBI 74-2256 1976 Removed NO Suction Pipe N/A 1SIO6AA-24 2006 Installed NO

7. Description of Work REMOVED END BELL. INSTALLED SUCTION PIPE COLLAR PER EC 356569
8. Test Conducted: Hydrostatic 0 Pneumatic El Nominal Operating Pressure 0 Exempt~

Other 0 Pressure psi Test Temp. ¶ Note: Supplemental sheets inform of lists, sketches, or drawings may.be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO# 00890987-09, installed suction pipe collar is a non-code item, the listed component number is from the bill of materials Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Signed OatA4 O~.A1A.~ , R~,z ~Op/Jizv~. Date /i-.2/ ,20 06 Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT

  • of Hartford, CT have inspecpd the components described in this Owners Report during the period

_____________ to ______________ , and state that to the best of my knowledge and belief, the Owner has performedexaminations and taken corrective measures described in this Owners 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 Owners 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 Iii lici Inspectors Signature National Board, State Province, and Endorsements Date: ______________,20 06 (Final)

DOCUMENT NO.: 5.2 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI Owner Exelon Nuclear Date 9/16/06 Name 4300 Winfield Road, Warrenvllle, IL Sheet 1 of 1 Address Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00890987-14 Address Repair O,panlzatlon, P.O. No., Job No., etc.

Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 36400 S. Essex Road, Wilmington, IL 60481 Expiration Date Not Applicable Address IdentificatIon of System SI (Safety Injection)

Applicable Construction Code ASME Section Ill 1974 EdItion, S75 Addenda1 Case Applicable Edition of Section Xl Used for Repair/Replacement ActIvity 2001 EditIon / 2003 Addenda Section XI Code Case(s) NONE Identification of Components ASME Corrected, Code National Removed, or Stamped of Name of Maniiacturer Board Other Year Installed (Yes or No)

Component Manufacttwer Serial No. No. Identification Bunt FTG CBI N/A 1SIO6AB-24 1976 Removed NO Pipe CCI N/A 1SIO6AB-24 2006 Installed NO

7. Description of Work Removed End Bell, installed suction pipe collar per EC 356569
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt ~

Other 0 Pressure _________psi Test Temp.

Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets Is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO# 00890987-14, installed suction pipe collar is a non-code item, the listed component number is from the bill of materials.

Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPUANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of,Apthorization No. Not Applicable Signed 1 /Jiwol (~. itA.~..u. i?PR COO~f)ift)ftroP~ Date /~2- ~ ,20 06 or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period

____________ to _____________ , and state that to the best of my knowledge and belief, tie 5wner has performed ex~minationsand taken corrective measures described in this Owners 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 Owners 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 ii~z-Inspectors Signature National Board, State Province, and Endorsements Date: A~JV/1 ,20 06

(

I DOCUMENT NO.: 3.2 REV. NO.: 0 7 FORM NIS-2 OWNERS REPORT FOR REPAIRIREPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 9/16/06 Name 4300 Winfleld Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00908949-01 & -14 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by N P 5 & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 364005. Essex Road, Wilmington, IL 60481 Expiration Date Not Applicable Address
4. Identification of System SI-SAFETY INJECTION 1974 Ed/S75 Piping
5. (a) Applicable Construction Code ASME Section III 1971 Edition, W72 Addenda, None Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (c) Section Xl Code Case(s) NONE
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built Kerotest/Flowserve S/N: KYA1-7 7752 1S18819B 1975 Removed YES 2 Check Valve Corp. ,

2 Check Valve Kerotest/Flowserve S/N: US6-11 ~. 21440 1S18819B 1978 Installed YES Corp.

2 Pipe, Sch. 160 Sandvik Inc. HT# 462460 N/A 1SI18FB/1SI18EB 1977 Removed NO 2 Pipe, Sch. 160 Kerotest/Flowserve (Sanyo Steel) HT# 805256~ N/A 1SI18FB/1SI18EB 1997 Installed NO 2-1500# Sch.160 G+W Taylor HT: HK584 N/A Mech. Joint# 31A Orifice Flange Bonney Div 1980 Removed NO 2-1500# Sch.160 Consolidated Orifice Flange Power Supply HT: 34811 ~ N/A Mech. Joint# 31A 2006 Installed NO

7. Description of Work REPLACE CHECK VALVE, PIPE STUBS, AND 2-1500# Flange-SCH. 160 Bore
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 755 / 2235 psi Test Temp. 90/108 °F Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number nf ~hnAt~~ rpgnrrl~d~t th~t~nnf thifl ft~rm

FORM NIS-2 (Back)

9. Remarks WO# 00908949-01 and WO 00908949-14 (Pre-Fabrication Work).

Applicable Manufacturers Data Reports to be attached NOTE: Installed valve with pipe stubs was supplied as an assembly by Flowserve Corp as documented In the attached NR-1 Form.

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

Type Code Symbol Stamp Not Applicable Certificate of A orization No. Not ApplIcable Signed _~::5 Date I p , 20 06 or Owners Designee, Title CERTiFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspeced the components described in this Owners Report during the period

______________ to /~/Jo/8( , and state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code, Section 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 Owners 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.

~9O4~~( Commissions /LL ~

Inspectors Signature National Board, State Province, and Endorsements Date: IP ,20 06 (Final)

POOR OVALITY OR1CINAL b~I0 OO~~%~0I/l~

~( 14k-I P~T CF RnAJR(J MO0U~1CMION[~] OR 1?~TALIATICNCFREPLAcEM~r(s)0 TO NUCI2AR COMIVNENTSAND S~IF~JN NL~I1AR POWER PLANTS

______ Plows.rv. Corp. P.O. #367072: 5.0. #R474p-1

~ - -I 7Olflrst Str.t, Williaasport, PA 17701 2.~ Co~onwa2th Bdiion Cc~oanv P.O. Sos 767, Chicago, IL 60690

&H~.d ~did.~~i ~m-rtp~pIwt Byron Suclear Station 44S0 S. Gar~anChurch Rna&. 5yrfnl~. IT. ~1f%1fl t~pus1

5. ~ Lao~WI4arr.pI&.J2 - 1500$ YGlobe Chack Valva

~ Xerotest Manufacturina Corp.

a I ~ ~ N/A N/A S/A 1975

~tM$.) .p

~ Ci~.~urd~nCod....M~..j.U 1974 Si~r 1QTS 5/5 1

____ a~ N/A N/A 7~~~prth ~~ 1974 Su~.r 1976 s/A

~ if ~ ~Jl~

N/A ~u_u I/A N/A 1~~~

LD.~gn._v_i~4I4I ?lowserv-. Corp.

m~~--~I~L----&(~J pr_.atD d.ilpp.u.usirsD p,~. 5500 pi Co~Cu~) I/A

_____ W.ld pip. stubs on valves, 12 body to pipe stub wild,

.~ I Nydrotest and seat leakaaa tant wa1~

~ Pine stub. ST *805256 suonli.d by Ceonwealth Idigon c*RTIflCAT$ Of CCMPUANCZ I V - fliiv~r - eHfv ih.& Hi. ~ ni.d. th iIH. ,~t rt i.id Hi. ,~ iiIi.~.M.i.. ,w i~a~i& ddwIlsue dsath~ euJ~.toSactian XI.1 th.Ak~4ECod. and ~ lb. NadoanI Bead C.d.1Nr.~d.

NadC.S,ciAuthorIzalb~nNo~NR44 ~ian 1RaI~up~ea7Jlfl .HC 7flfll

~

crzrIncAu OFINSPICTJON L_f~h.rI~ Youaa -hd~Iga~~idf-~ib.u.dbyTh. N.danal lead.(l.Oi, and P,eaw,~

Pannay1v~n4a ~ esupIyndby C~.rcialUnion Insurance Co. ~ Boston MA

~~~avW ~vora$&~4m.,rL.Jbe d~j~tai 5 AQI9 ~17 ~ lii.

ktciayImawIudpaidb~4d~iep~ ~cri,~1-i,~h.b.anençkludin acrordans. wIth 5&cllon XI Bead L.~anC.d.NRnd.

~ ~ aMthadwawb.dgand~*x y *iá.~ WIanI)~ .4.....4 or bnpBed,, cos~lig

~.Lnaiy niavis fir

~__

099.00586 k.~.?

DOCUMENT NO.: 3.2 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 9/15/06 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 1 Name 4450 N. German Church Road, Byron, IL Work Order No. 00908951-01, 09 & 14 Address Repair Organization, P.O. No., ,Job No., etc.
3. Work Performed by N P S & W VENTURE Type Code Symbol Stamp Not Applicable Name Authorization No. Not ApplIcable 36400 S. Essex Road, Wilmington, IL 60481 Expiration Date Not Applicable Address
4. Identification of System SI-SAFETY INJECTION
5. (a) Applicable Construction Code (Chk \~lv) ASME Section III 1971 Edition, W72 Addenda, None Code Case Applicable Construction Code (Piping) ASME Section Ill 1974 Edition, Sf75 Addenda, None (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (c) Section Xl Code Case(s) NONE
6. identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built 2 Check Valve ~t~ow~e S/N: US6-2 21438 1SI8819C 1978 Removed YES

~/F1OWS~IV~

2 Check Valve S/N: E-467P-1-6 N/A 1S18819C 1999 Installed YES 2 Pipe, Sch. 160 Sanyo Steel HT: 805256 N/A 1SI18EC/1SI18FC 1997 Removed NO 2 Pipe, Sch. 160 HT: 505112 -# N/A 1SI18EC/1SI18FC 2006 Installed NO

?-1500# Sch.160 G+W Taylor HT HK584 N/A Mech. Joint# 26A 1980 R emoved NO Orifice Flange Bonney Division ~ 1 500# Flange 2-1500# Sch.160 Consolidated Mech. Joint# 26A Orifice Flange Power Supply HT~479YNE N/A 1 500# Flange 2002 I n stalled NO

7. Description of Work Replace check valve, pipe stubs, and 2-1500# Flange-SCH. 160 Bore. WO 00908951 Task-Ol installs assembly into the system, Task-09 welded piping to Chk. VIv., Task-14 welded Flange To Pipe.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 755 / 2235 psi Test Temp. 90 I 108 ~F Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO# 00908951-01 (system installation), Tasks 09 and 14 (Pre-Fabrication Work).

App~icabieManufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of e~thoriza~n No. Not ApplIcable Signed ~ J($~_ ~ Date i%f4t ,20 06

~~or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have in;pecj~dthe components described in this Owners Report during the period

______________ to /~~4~6 , and state that to the best of my knowledge and belief, th~O~ner has performedex~inationsand taken corrective measures described in this Owners 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 Owners 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 Ia -//51 ~I Inspectors Signature National Board, State Province, and Endorsements Date: 4~W5i2 ,20 06 (Final)

[ DOCUMENT NO.: 4-1 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 9/26/06 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of 2 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00957225-01/03 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable MaIntenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not ApplIcable Address
4. Identification of System SI - SAFETY INJECTION 1~b ~aiuon,nio iwoenaa ~vaive~
5. (a) Applicable Construction Code ASME Section III 1974 Edition, S75 Addenda, NONE Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 EditlonI2003 Addenda (C) Section Xl Code Case(s) NONE
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built VENT LINE INSTALLED ON 24 B.W. PIPE CAP 1SIO1B-24 (Spool Sl-14-1) 1-1/2 Energy& HT#GP7O N/A CATID#1416698 2006 SOCKOLET Process Corp. 1SIK3AA-1 W INSTALLED NO 1-1/2 PIPE Consolidated HT.# 8223J N/A CAT ID #1 226372 Power Supply 1SIK3AA-1 1/2 2001 INSTALLED NO 1-1/2 GATE Flow Serve ET550-9-3 ~ N/A CAT ID #1416683 1993 INSTALLED YES VALVE ~ 1SI126A 1-1/2 S.W.R.F. Chicago Tube HT# AMBO N/A CAT ID #19984 FLANGE & Iron ISIK3AA-1 1/2 1987 INSTALLED NO 1-1/2 BUND Energy & HT.Code N/A CAT ID #37922 2000 INSTALLED FLANGE Process Corp. C5656 1SIK3M-1 W NO 1/2-13 X 3 CAP Nova Machine HT.# N/A CAT ID #23225 2003 SCREWS (4) Products USY06420 1SIK3AA-1 1/2 INSTALLED NO 1/2-13 HVY HEX Nova Machine Ht #B87035 N/A CAT ID #37027 2004 NUTS (4) Products Code: K135 1SIK3AA-1 1/2 INSTALLED NO

7. Description of Work Install Two Vent Valve/Pipe Spools On Si Supply Header Per Ec# 362644
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 33 psi Test Temp. 82 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

I DOCUMENT NO.: 4-1 REV. NO.: 0 FORM NIS-2 SUPPLEMENTAL SHEET

1. Owner Exelon Nuclear Date 9/26/06 Name 4300 Winfleld Road, Warrenville, IL Sheet 2 of 2 Address
2. Plant Byron Nuclear Power StatIon Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00957225-01/03 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System SI SAFETY INJECTION i~s~ ~OItlOn, NO ~ciaenaa~vaive~
5. (a) Applicable Construction Code SectIon III 1974 Edition, S75 Addenda, None Code Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 2001 Ed/2003 Ad (c)Section XI Code Cases used, None
6. Identification of Components Repaired or Replaced and Replacement Components Name of Component Name of Manufacturer Manufacturer Serial No.

National Board No.

Other Identification Year BUilt Removed, Corrected~

Installed 1 ASME Stamped Code No)or (Yes VENT LINE INSTALLED ON 24 SIN D PIPE 1SIO1 B-24 (Spool Sl-14-4) 1-1/2 Energy & HT# GP7O N/A CAT ID #1416698 2006 INSTALLED SOCKOLET Process Corp. 1SI3AB-1 1/2 NO 1-1/2 PIPE Consolidated HT.# 8223J -

N/A CAT ID #1226372 2001 INSTALLED NO Power Supply 1SI3AB-1 1/2 1-1/2 GATE Flow Serve ET550-9-10 -~

N/A CAT ID #1416683 1993 INSTALLED YES VALVE 1SI126B 1-1/2 S.W.R.F. Chicago Tube & HT# AMBO N/A CAT ID #19984 FLANGE Iron 1SI3AB-1 1/2 1987 INSTALLED NO 1-1/2 BLIND Energy & HT.Code C5656 N/A CAT ID #37922 2000 INSTALLED FLANGE Process Corp. 1SI3AB-1 1/2 NO 1/2-13 X 3 CAP Nova Machine HT.# USY06420 N/A CAT ID #23225 SCREWS (4) Products ~ 1SI3AB-1 1/2 2003 INSTALLED NO 1/2-13 HW HEX Nova Machine Ht #B87035 CAT ID #37027 2004 NUTS (4) Products Code: K135 1SI3AB-1 Y2 INSTALLED NO (Final)

4 FORM NIS-2 (Back)

9. Remarks 00957225-01/03 Applicable Manufacturers Data Reports to be attached CERTiFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of A~thoriza~~p No. Not Applicable Signed (~~ ~ ~ Date 1 (/V~ ,20 O~

(~~) or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period

_____________ to ______________ , and state that to the best of my knowledge and belief, tI~Owner has performed ex~fninationsand taken corrective measures described in this Owners 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 Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection.

_____________________ Commissions /i~Z-/J3~2 Inspectors Signature National Board, State Province, and Endorsements Date: ,t.~?/ ~7 ,20 p~

ENTNO.~.O REV.NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTiVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 9/21/06 Name 4300 WInfield Road. Warrenvllle. IL Sheet 1 of 1 Address
2. plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00503434-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by NPS&W VENTURE Type Code Symbol Stamp Not Aoølicable Name Authorization No. Not Applicable 36400 S. Essex Road, Wilmington, IL 60481 Expiration Date Not ApplIcable Address
4. Identification of System ESSENTIAL WATER (SX)
5. (a) Applicable Construction Code ASME Section III 19 74 Edition, S75 Addenda, 1702 Code Case

________________ ____ 1773 (b) Applicable Edition of Section XI Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (c)Section XI Code Case(s) NONE

6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built Butterfly Valve Jamesbury NO.48858-hA N/A 1SX143A 1978 REMOVED YES Butterfly Valve ENERTECH 11534 N/A 1SX143A 2006 INSTALLED YES

7. Description of Work REPLACE VALVE PER EC 77580
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 97 psi Test Temp. 63 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks Work Order No. 00503434-01 Applicable Manufacturers Data ~eponsto oe auacneci CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms tO the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of thorization No. Not Applicable Signed ~ DeSIgn;, litie Date i t/~ I ,20 06 CERTIFICATE OF INSER VICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspec)ed the components described in this Owners Report during the period

_____________ to ______________ , and state that to the best of my knowledge and belief, the dwner has pertorme6 examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damagp or a loss of any kind arising from or connected with this inspection.

__________________________ Commissions ///-/I cf L~ Inspectors Signature National Board, State Province, and Endorsements Date: __________________ , 20 06 (Final)

FORM NIS-2 OWNERS REPORT FOR REPAIRS OR REPLACEMENT As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 8/2/05 Name 4300 Winfield Rd. Warrenville, II. 60555 Sheet I of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, II. Work Order No. 00603161-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, II. 61010 Expiration Date Not Applicable Address
4. Identification of System ESSENTIAL SERVICE WATER [SX]
5. (a) Applicable Construction Code Section Ill 1977 Edition, W78 Addenda,N/A Code Case (b) Applicable Edition of Section Xl Utilized for Repairs or Replacement Components 19 89 (c) Applicable ASME Section XI Code Cases: None
6. Identification of Components Repaired or Replaced and Replacement Components National RepaWed. ASME Nameof Name of Manufact~w Board Other Year Replaced, Code; Stamped Component Manufacturer Serial No. No. IdentIfIcatIon ~ or Replacement (Yes or No) 1.5 DIAMETER SEM Tec Inc. 80-52894-4-29 N/A 1SX2165A 1981 REPLACED NO BALL CarpenterTec.

1.5 DIAMETER ITT Industries S/N 746462-1-2 1SX2165A 2004 REPLACEMENT NO BALL HT: 718053-21 N/A

7. Description of Work REBUILD VALVE REPLACE BALL
8. Test Conducted: Hydrostatic D Pneumatic J~ Nominal Operating Pressure Ei N/A Other 0 Pressure_______ psi Test Temp.______________ °F Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.,

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

This form has been electronically generated.

FORM NlS-2 (Back)

RemarksWO# 00603161-01 Apptsable Manufacturees DataReports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this REPLACEMENT conforms to the rules of the ASME Code,Section XI.

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

5~

eraoe*L~~ C,~-J. Date_________ ,20 Q~,

CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by__HSB CT.

of Hartford, CT have ins~pecJedthe components described in this Owners Report during the period 4((~.çf~f to ~~4~5 , and state that to the best of my knowledge and belief, tho#t)ner has performed examir1a~E6nsand taken corrective measures described in the Owners 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 Owners 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 kip&qri~pgfrom nnec e th this inspection.

Commissions /41 -

t3oed,~MePrevince. arvi E,~1mmei1i Date ~ (~ .20 ~5

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

1. Owner Exelon Nuclear Date 1/6/06 Name 4300 Winfleld Road, Warrenville, IL 60555 Sheet 1 of Address
2. Plant Byron Nuclear Power Station Unit 00 Name 4450_N. German Church Road, Byron, IL 61010 Work Order No. 00722701-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp NOT APPLICABLE Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL 61010 Expiration Date Not Applicable Address
4. Identification of System ESSENTIAL SERVICE WATER [SX}
5. (a) Applicable Construction Code Section III 1974 Edition, S/76 Addenda, NO Code Case (b) Applicable Edition of Section Xl Utilized for Repairs or Replacement Components 19 89 (c) Section Xl Code Cases used, None
6. Identification of Components Repaired or Replaced and Replacement Components ASME Repaired, Code National Replaced, Stamped Name of Name of Manufacturer Board Other Year or (Yes or No)

Component Manufacturer Serial No. No. Identification Built Replacement CHECK ANDERSON VALVE GREENWOOD B386

~__________

N/A OSXI43B 1978 Replaced YES CHECK ANDERSON 97-61040 N/A Cat id 35908 1998 Replacement YES VALVE GREENWOOD OSXI43B

7. Description of Work REPLACE CHECK VALVE
8. Test Conducted: Hydrostatic Li Pneumatic 0 Nominal Operating Pressure Z Other Li Pressure 22 psi Test Temp Ambient °F 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 I through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded atthe top of this form.

FORM NIS-2 (Back)

9. Remarks WO# 00722701-01 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this Replacement conform to the rules of the ASME Code, Section Xl. repair or replacement Type Code Symbol Stamp Not Applicable Certificate of Au~orizationNo. Not Applicable Signed (-\?c\ ~S~3& ~L Date ,20 17,~

(~j~pr Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period to ~ , and state that to the best of my knowledge and belief, the owner has performe~ex~minationsand taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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~t~% Commissions -

Inspectors Signature National Board, State Province, and Endorsements Date: i-ri. ç~!7 ,20 ~7

FORM NIS-2 OWNERS REPORT FOR REPAIRS OR REPLACEMENT As RequIred by the ProvIsIons of the ASME Code Section XI

1. Owner Exelon Nuclear Date 11/08/05 Name 4300 Wlnfleld Rd. Warrenvllle, II. 60555 Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 1 Name 4450 N. German Church Road, Byron, II. Work Order No. 00726137-01 Address RepaIr Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Maintenance Type Code Symbol Stamp Not ApplIcable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, II. Expiration Date Not ApplIcable Address
4. Identification of System SX ESSENTIAL SERVICE WATER
5. (a) Applicable Construction Code Section Ill 1974 Edition, W75 Addenda, NONE Code Cases (b) Applicable Edition of Section Xl Utilized for Repairs or Replacement Components 19 89 (C) Applicable ASME Section Xl Code Cases: None
6. Identification of Components Repaired or Replaced and Replacement Components Naft~l Repelre~ ASME Name 01 Name ci Mw,ufacturer Board Other Year Replaoad. Cods; Stamped Con~onent Nanufachirer Se,1~No. No. IdentIfication Built ~ Replacement (Yea or No)

ANDERSON S/N: N/A YES Check Valve GREENWOOD N26076 1SX174 1990 Replaced ANDERSON S/N:A-120 N/A YES Check Valve GREENWOOD 1SX174 1977 Replacement

7. Description of Work REPLACE CHECK VALVE.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~

N/A Other 0 Pressure 73 psi Test Temp. 72 °F Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in.xll in.,

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

This form has been electronically generated.

FORM NIS-2 (Back)

9. Remarks Work Order No. 00726137-01 Appilcabte Manufadurers OatS Reports to be attactied Replacement check valve was rebuilt under Purchase Order 00403938.

CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this Replacement conforms to the rules

Type Code Symbol Stamp Not Applicable Certificate o Authorization No. Not Applicable Expiration Date Not Applicable Signed ~ Date_________ ,20 OL, CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of IllInoIs and employed by HSB CT.

of Hartford, CT have inspected)he components clescnDed Ifl this Owners Report during the period ,//~>1c to , and state that to the best of my knowledge and belief, the O*nér has performed e~amWla~Ions and taken corrective measures described in the Owners 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 Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or propert~çJ~magqora igas of any kind arising from or connected with this inspection.

h Commissions ,... ,~:fq Date J~q.3Q ,20 ~

FORM NIS-2 OWNERS REPORT FOR REPAIRS OR REPLACEMENT As Required by the ProvIsions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 11/08/05 Name 4300 WinfIeld Rd. Warrenville, II. 60555 Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 1 Name 4450 N. German Church Road, Byron, II. Work Order No. 00740850-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron MechanIcal Maintenance Type Code Symbol Stamp Not ApplIcable Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, II. Expiration Date Not Applicable Address
4. Identification of System SX ESSENTIAL SERVICE WATER
5. (a) Applicable Construction Code Section III 1974 Edition, W75 Addenda, 1567 & 1682 Code Cases (b) Applicable Edition of Section Xl Utilized for Repairs or Replacement Components 19 89 (c) Applicable ASME Section Xl Code Cases: None
6. Identification of Components Repaired or Replaced and ReplacementComponents Natlonai Repaired, ASME Name ci Name 01 Manufacturer Board Other Year Replaced, Code; Stamped Component Manufacturer Se,iai No. No. Identification Butt or Replacement (Yes or No)

Valve Disc Anchor/Darling HT: A1608 N/A 1SX175 No S/N: R2492 S/N E-6220-4-3 1977 Replaced Valve Disc HT:B6516 N/A 1SX175 YES Flowserve Corp. S/N: 2 CAT ID #008188-1 2000 Replacement

7. Description of Work Rebuild valve, replace disc and stem.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 N/A Other 0 Pressure n/a psi Test Temp. n/a °F Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in.xll in.,

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

This form has been electronically generated.

FORM NIS-2 (Back)

9. Remarks Work Order No. 00740850-01 CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this Replacement conforms to the rules of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Expiration Date Not Applicable Signed ~~ C~-y~irJ Date________ ,20 o~

CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT.

of Hartford, CT . ,. have inspect9d tije components descnbecl in this Owners Report during the period jc//4~5 to , and state that to the best of my knowledge and belief, the OWnerfias performed exafhin~fionsand taken corrective measures described in the Owners 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 Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or propertv.d~qiagegr a lo~of any kind arising from or connected with this inspection.

ll,p,c~xeSgnesse Commissions /I- ,~!5Y r~atcnaaced. ~ Pwmre~a~

Date JiM 3~? ,20 p~

DOCUMENT NO.: 3-1 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY S 1. Owner As Required by the Provisions of the ASME Code Section XI Exelon Nuclear Date 9/21/06 Name 4300 WInfleld Road, Warrenvllle, IL Sheet 1 of 1 Address

2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 790200-13 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable MaIntenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System SX Essential Service Water
5. (a) Applicable Construction Code ASME Section III 1974 Edition, W75 Addenda, none Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity: 2001 EdItionI2003 Addenda (c)Section XI Code Case(s) none
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. identifIcation Built DISC DRUMMOND MAR. SA-515 N/A 1SXO46A MCCALL & GR7O S/N 78G720 1978 riemoved DISC VELAN ENG. S/N 4~72 N/A Cat Id 23891 2005 Installed No

7. Description of Work Rebuild valve, replace disc
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt ~

Other 0 Pressure __________ psi Test Temp. _____________

Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM N1S-2 (Back)

9. Remarks Work Order No. 790200-13 Applicable Manufacturers vata ~eportsto ~eattacnea CERTiFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate ofAuthorization No. Not Applicable Signed (/J~v~4 a~ ,~ M/~&?aI2Jj,A)4-IZ),1e Date /c2/~1O ,20 o~

(~Q[~pr Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hajtford, CT have in~pectedthe components described in this Owners Report during the period 4/4/nb to ______________ , and state that to the best of my knowledge and belief, the Owner has performe6 e~minationsand taken corrective measures described in this Owners 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 Owners 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 ___________________________

Inspectors Signature Natlonai Board, State Province, and Endorsements Date: Af,~14~f ,20 i.~6

DOCUMENT NO.: 4A REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl Owner Exeion Nuclear Date 10/20/06 Name 4300 WinfIeld Road, Warrenville, IL Sheet 1 of 1 Address Plant Byron Nuclear Power Station Unit 00 Name 4450 N. German Church Road, Byron, IL Work Order No. 00846436-01 Address Repair Organization, P.O. No., Job No., etc.

Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable N. German Church Road, Byron, IL Expiration Date Not Applicable Address Identification of System SX ESSENTIAL SERVICE WATER Applicable Construction Code ASME Section Ill 1974 Edition, S75 Addenda, N/A Code Case Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 Edltlon/2003 Addenda Section XI Code Case(s) N/A Identification of Components ASME Corrected, Code National Removed, or Stamped of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. identification Built 802 N/A N/A N/A OSXA1 BA N/A REMOVED NO 802 HT# A82900 N/A Cat Id 24507-1 2006 INSTALLED NO

7. Description of Work REMOVE AND REPLACE PIPE SECTION BETWEEN VALVES OSX168A & OSX169A.

THIS PIPE HAS BEEN CHANGED TO ASME CL.3. PER EC# 357135.

PIPE WAS PREVIOUSLY NON-SAFETY RELATED.

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 150 psi Test Temp. 52 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO#00846436-01 Applicable Manufacturers uata ~eportsto re attacnea CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of &uthoriza~nNo. Not Applicable Signed  %.~ )(~E?rj ~ Date I ~/zi.. ,20 ~4~

(~~?~r Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have in~pect,dthe components described in this Owners Report during the period

_____________ to ///J7/~ , and state that to the best of my knowledge and belief, tfe Owner has performedex~inationsand taken corrective measures described in this Owners 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 Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or ro erty damage a loss of any kind arising from or connected with this ir~spection.

q~4~ir~ Commissions /fL~,.t~c4 Inspectors Signature National Board, State Province, and Endorsements Date: /14~/, ~2? ,20 ~

(Final)

DOCUMENT NO.: 4A REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 10/13/06 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 00 Name 4450 N. German Church Road, Byron, IL Work Order No. 00846493-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not ApplIcable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System SX ESSENTIAL SERVICE WATER
5. (a) Applicable Construction Code ASME Section III 1974 EditIon, S75 Addenda, N/A Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity: 2001 Edition/2003 Addenda (C)Section XI Code Case(s) N/A
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built PIPE SCHED 802 N/A N/A N/A OSXA1BB N/A REMOVED NO PIPE SCHED 802 HT# A82900 N/A Ci#24507-1 2006 INSTALLED NO

7. Description of Work REMOVE AND REPLACE PIPE SECTION BETWEEN VALVES OSX198B & OSX169B.

THIS PIPE HAS BEEN CHANGED TO ASME CL.3. PER EC# 357135.

PREVIOUSLY NON-SAFETY RELATED.

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 148 psi Test Temp. 48 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO#00846493-01 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Not 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 HSB CT of Hajtford, CT have in~pec~~d the components described in this Owners Report during the period

______________ to ///J~2f6 , and state that to the best of my knowledge and belief, the 6wner has pertormedexaminations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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 _________________________

Inspectors Signature National Board, State Province, and Endorsements Date: A/fl1 ,20 °6

I DOCUMENT NO.: 4A REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 11/10/06 Name 4300 WInfield Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 00 Name 4450 N. German Church Road, Byron, IL Work Order No. 00846494-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable MaIntenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System SX ESSENTIAL SERVICE WATER
5. (a) Applicable Construction Code ASME Section Ill 1974 Edition, S75 Addenda, N/A Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 Editlon/2003 Addenda (c)Section XI Code Case(s) N/A
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built PIPESCHED8O2 N/A N/A N/A OSXA1BD N/A REMOVED NO PUE SCHED 80 2~ HT# A82900 N/A 2006 INSTALLED NO Cat Id #24507-1

7. Descnption of Work REMOVE AND REPLACE PIPE SECTION BETWEEN VALVES OSX168D & OSX169D.

THIS PIPE HAS BEEN CHANGED TO ASME CL.3. PER EC# 357135.

PIPE PREVIOUSLY WAS NON-SAFETY RELATED.

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 146 psi Test Temp. 50 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO#00846494-01 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of Au~horizationNo. Not ApplIcable Signed ...S ~ ~ ~ ,.& Date I,,4~ei .20 D(_

~or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period

_____________ to //~~~ , and state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in this Owners 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 Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property ~lama~e or a loss of any kind arising from or connected with this inspection.

___________________________ Commissions ___________________________

Inspectors Signature National Board, State Province, and Endorsements Date: ~ 19 ,20 8~

I DOCUMENT NO.: 4A REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl Owner Exelon Nuclear Date 10/20/06 Name 4300 Wlnfleld Road, Warrenville, IL Sheet 1 of 1 Address

2. Plant Byron Nuclear Power Station Unit 00 Name 4450 N. German Church Road, Byron, IL Work Order No. 00846496-01 Address Repair Organization, P.O. No., Job No.. etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System SX ESSENTIAL sERvIcE WATER
5. (a) Applicable Construction Code ASME Section III 1974 Edition, S75 Addenda, N/A Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 EdltIon/2003 Addenda (C)Section XI Code Case(s) N/A
6. Identification of Components
7. Description of Work REMOVE AND REPLACE PIPE SECTION BETWEEN VALVES OSX198C & 0SX169C.

THIS PIPE HAS BEEN CHANGED TO ASME CL.3. PER EC# 357135.

PREVIOUSLY NON-SAFETY RELATED.

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 150 psi Test Temp. 52 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO#00846496-01 Applicable Manufaclurers Data Heports to be attacned CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of As~thorizationNo. Not Applicable Signed ~ ~7~3ç ~ Date I (/~t .20 ~~é

~ or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Ijarford, CT have ins,ect,d the components described in this Owners Report during the period

______________ to //j~3~, and state that to the best of my knowledge and belief, the (fwner has performeIexa~inationsand taken corrective measures described in this Owners 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 Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or roperty da e or a)ss of any kind arising from or connected with this inspection.

_________________________ Commissions /~ij~,jc4 Inspectors Signature National Board State Province and Endorsements Date: ~ ~7 ,20 ~

I DOCUMENT NO.: 4A REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 10/20/06 Name 4.300 Winfleld Road, Warrenvllle, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power StatIon Unit 00 Name 4450 N. German Church Road, Byron, IL Work Order No. 00846497-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not ApplIcable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System SX ESSENTIAL SERVICE WATER
5. (a) Applicable Construction Code ASME Section III 1974 Edition, S75 Addenda, N/A Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity: 2001 Edltlon/2003 Addenda (c)Section XI Code Case(s) N/A
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification BUIlt PIPE SCHED 802 N/A N/A N/A OSXA1BE N/A REMOVED NO PIPE SCHED 802 HT# A82900 N/A 2006 INSTALLED NO Cat ld#24507-1

7. Description of Work REMOVE AND REPLACE PIPE SECTION BETWEEN VALVES OSX168E & OSX169E.

THIS PIPE HAS BEEN CHANGED TO ASME CL.3. PER EC# 357135.

ORIGINAL PIPE WAS NON-SAFETY RELATED

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 150 psi Test Temp. 52 2F Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8Y2 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-2 (Back)

9. Remarks WO#00846497-01 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of thorization No. Not Applicable Signed ~ ~or ~e;~igne ~ -- Date 1(74 t ,20 ~,

CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of IllInois and employed by HSB CT of Hartford, CT have in1pe9ted the components described in this Owners Report during the period

______________ to ,//Jt/t~6 , and state that to the best of my knowledge and belief, th6 dwner has pertorme6ex~hiinationsand taken corrective measures described in this Owners 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 Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or pr~pertydamage7 a loss of any kind arising from or connected with this inspection.

______________________ Commissions - JI,5_4 Inspectors Signature National Board, State Province, and Endorsements Date: ,4/pj/, ,(f ,20 176

I DOCUMENT NO.: 4A REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 10/13/06 Name 4300 Wlnfield Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 00 Name 4450 N. German Church Road, Byron, IL Work Order No. 00846498-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System SX ESSENTIAL SERVICE WATER
5. (a) Applicable Construction Code ASME Section Ill 1974 Edition, S75 Addenda, N/A Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity: 2001 EdItion/2003 Addenda (c)Section XI Code Case(s) N/A
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built PIPE SCHED 802 N/A N/A N/A OSXA1 BF N/A REMOVED NO Consolidated OSXA1 BF PIPE SCHED 802 Power Supply HT# A82900 N/A CI# 24507-1 2006 INSTALLED NO

7. Description of Work REMOVE AND REPLACE PIPE SECTION BETWEEN VALVES OSX168F & OSX169F.

THIS PIPE HAS BEEN CHANGED TO ASME CL.3. PER EC# 357135.

PREVIOUSLY NON-SAFETY RELATEa

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 148 psi Test Temp. 48 ¶ Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO#00846498-01 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of P~ithorizatii9~ No.

. Not Applicable Signed ~ Date _______,20 LX..

Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of ,H~rtford,CT have in~pectedthe components described in this Owners Report during the period

______________ to ,/)(tç/66 , and state that to the best of my knowledge and belief, the bwner has performedex~ninationsand taken corrective measures described in this Owners Report in acordance 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 Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damag~ra loss of any kind arising from or connected with this inspection.

___________________ Commissions ___________________

Inspectors Signature National Board, State Province, and Endorsements Date: ,4%,~/.~(S ,20 ~

I DOCUMENT NO.: 4-1 REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 07/27/06 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of 1 Address 2 Pl~int Byron Nuclear Power Station Iir~it 00 Name 4450 N. German Church Road. Byron. IL Work Order No. 00907092-01 Address - Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System SX ESSENTIAL SERVICE WATER
5. (a) Applicable Construction Code ASME Section III 1974 Edition, W75 Addenda, 1567, 1682 Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 Edition/2003 Addenda (c) Section Xl Code Case(s) NONE
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built DISC 0U~ERft~.1.OY R3480 OSX161A 1978 CASTING CO. I{~A1634 N/A S/N E-6220-4-9 REMOVED NO DISC FLOWSERVE 05320-X664 OSX161A N/A S/N E-6220-4-9 2006 INSTALLED NO NUT, BONNET NUTS, INC. HT# X44392 OSX161A N/A S/N E-6220-4-9 1978 REMOVED NO NUT, BONNET NOVA MACHINE PROD.

HT#B87035 OSX161A 2000 INSTALLED NO OTY. 6 CODE VCF N/A CAT ID 37029-1 NUT, BONNET NOVA MACHINE HT# 8077124 OSX161A OTY. 2 PROD. N/A CAT ID 37029-1 2000 INSTALLED NO STUD, BONNET R.E.C. CORP. HT#: X4.4392 OSX161A 1978 N/A S/N E-6220-4-9 REMOVED NO STUD, BONNET NOVA MACHINE HTTR# 230111 N/A OSX161A 2005 PROD. HI CODE ~ CAT ID 370921 INSTALLED NO

7. Description of Work REBUILD VALVE, REPLACE DISC, BONNET STUDS & NUTS.

NEW VALVE DISC WILL REQUIRE MACHINING TO FIT THE VALVE.

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt~

Other 0 Pressure n/a psi Test Temp. n/a Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM N1S-2 (Back)

9. Remarks WO# 00907092-01 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Not Applicable Signed Date ________,20 c9~~

Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period

~4b to ~4JP4~ , and state that to the best of my knowledge and belief, tice (5wner has performed examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property dam,~geor a loss of any kind arising from or connected with this inspection.

_________________________ Commissions __________________________

Inspectors Signature National Board, State Province, and Endorsements Date: I~7 ,20 ,24

I DOCUMENT NO.: 4i REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 7/7/06 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 0 Name 4450 N. German Church Road, Byron, IL Work Order No. 00936532-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not_Applicable Address
4. Identification of System SX Essential ServIce Water
5. (a) Applicable Construction Code ASME Section III 1974 Edition, 5/75 Addenda, N/A Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity: 2001 Edltlon/2003 Addenda (c) Section Xl Code Case(s) N/A
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Nameof Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built Sd~802 Pipe Hunter Corp. Ht. Cd. AA Pipe Une MAR 4967 emove o OSX85AB-2 Sch. 802 Pipe Consolidated HT: 1 M35684 Power Supply N/A Pipe Une OSX85AB-2 2005 I nsta I N0

7. Description of Work Replace section of pipe between FW-1423 (Tee) and FW-1551 (Elbow)
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 146 psi Test Temp. 76 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO 00936532-01 Applicable Manufacturers Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate of A horizat~9gNo. Not Applicable Signed ~W~t ~ Date _______,20 (21,

~ (~or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owners Report during the period

______________ to ______________ , and state that to the best of my knowledge and belief, the ~wnerhas perform~e~minationsand taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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 __________________

Inspectors Signature National Board, State Province, and Endorsements Date: $ ,20 4

NO. 7A REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 07/26/06 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 00 Name 4450 N. German Church Road, Byron, IL Work Order No. 00941255-01 Address RepaIr Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System SX ESSENTIAL SERVICE WATER
5. (a) Applicable Construction Code ASME Section III 1974 Edition, S75 Addenda, N/A Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 Editlon/2003 Addenda (c) Section Xl Code Case(s) N/A
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built PIPE 2 SCHED 80 GULF STATES HT: JD1571 N/A OSX85AA 1977 REMOVED NO TUBE DIV MK: AA PIPE 2 SCHED 80 CONSOLIDATED HT# 1 M35684 N/A osx~~ 2005 INSTALLED NO POWER SUPPLY CAT ID 24507-1 ELBOW BONNEY M240 N/A OSXB5AA 1977 REMOVED NO 2 SCHED. 80 (2) FORGE ELBOW CONSOLIDATED HT: D35269 OSX85AA 2 SCHED. 80(2) POWER SUPPLY Lot: 75661 N/A CAT ID 47207-1 2005 INSTALLED NO COUPLING BONNEY BM35 N/A OSXB5AA 1977 REMOVED NO 2 SCHED. 80(2) FORGE COUPLING CONSOUDATED WFI HT# OSX85AA 2 SCHED. 80(2) POWER SUPPLY 297YNB N1A CAT ID 47132.1 1997 INSTALLED NO

7. Description of Work REPLACE PIPE SECTION AND FITTINGS.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 150 psi Test Temp. 82 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO# 00941255-01 Applicable Mafiufacturers Data Reports to béattachd CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Not 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 HSB CT of Hartford, CT have inspe9ed the components described in this Owners Report during the period

______________ to ______________ , and state that to the best of my knowledge and belief, tfce O~nerhas performed examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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 ,j~ -J4SV Inspectors Signature National Board, State Province, and Endorsements Date: 20 #1~

V (Final)

3A REV. NO.: 0

~I~~UMENT NO.:

FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 9/22/06 Name 4300 Winfield Road, Warrenvilie, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 00602001-01 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System VA- AUX. BLDG. HVAC
5. (a) Applicable Construction Code ASME Section III 1974 Edition, S/76 Addenda, N/A Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 Edition/2003 Addenda (C)Section XI Code Case(s) N/A
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built 3/8-16X4 LOWER CARDINAL HT: C72103 N/A 1VAO8S 1992 REMOVED NO HEAD BOLT 3/8-16X4 LOWER NOVA HT: 8092338 1VAO8S COOLER MACHINE CODE: BVG N/A CAT. ID: 36960 1996 INSTALLED NO HEAD BOLT PRODUCTS

7. Description of Work REPLACE ONE LOWER COOLER HEAD BOLT.
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt~

Other 0 Pressure ___________ psi Test Temp.

Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO# 00602001-01 Applicable Manufacturers uata 1-leports to oe attacnea CERTiFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Aut~orizationNo. Not Applicable Signed ,-~. ~ ~&.. (~-1 Date _______,20 D~

____ Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspe9ted the components described in this Owners Report during the period

~ to ______________ , and state that to the best of my knowledge and belief, the Owner has performed e~minationsand taken corrective measures described in this Owners 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 Owners 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 Inspectors Signature National Board, State Province, and Endorsements Date: ~ If ,20 06

I DOCUMENT NO.: 3A REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl

1. Owner Exelon Nuclear Date 10/28/06 Name 4300 Winfleld Road, Warrenville, IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station Unit 00 Name 4450 N. German Church Road, Byron, IL Work Order No. 00803477-02 Address Repair Organization, P.O. No., Job No., etc.
3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Appllcable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address
4. Identification of System WO CHILLED WATER 1974 Edition, S75 Addenda (piping)
5. (a) Applicable Construction Code ASME Section III 1980 Edition, S/80 Addenda, N/A Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity: 2001 Edltlon/2003 Addenda (C) Section Xl Code Case(s) N/A
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built S/N: 5 N/A EPN:OWOO28A 2004 REMOVED YES VALVE, REUEF TARGET ROCK CROSBY N99949-00-0002 ~ EPN:00028A VALVE, REUEF VALVE N/A CAT. ID 1414005 2006 INSTALLED YES GULF STATES HT#JD1571 OWO136AA-1-1/2 1977 NO 11/2 PIPE TUBE CORP MK: AC N/A PvtJ#1A REMOVED CONSOLIDATED HT#: 98766 ,~,

N/A OWO136AA-1-1/2 2005 INSTALLED NO 1-1/2 PIPE POWER SUPPLY MJ#1A NATIONAL FLANGE HT#: 82242 N/A OWO136AA-1-1/2 FLANGE & ATT1NG MK#BDW-77 M~J#1A 1978 REMOVED NO 1.i/~ CONSOLIDATED HT# A050963 ~ N/A OWO136AA-1-1/2 FLANGE POWER SUPPLY Code: CWL-A-1 MJ#1A 2006 INSTALLED NO 1/2-13 NOVA HT#QKZ OWO136AA-1-1/2 ThREADED ROD MACHINE PROD. N/A ~#1 A 2000 REMOVED NO 1/2-13 HEAVY NOVA HT# US Y06420 OWO136AA-1-1/2 HEX SCREW MACHINE PROD. 1 N/A  ?~,tJ#1A 2003 INSTALLED NO 1/2.13 HEAVY NOVA HT#EVY OWO136AA-1-1/2 HEX NUT MACHINE PROD. N/A MJ#1 A 1997 REMOVED NO 1/2.13 HEAVY NOVA HT# B87035 .J OWO136AA-1-1/2 HEX NUT MACHINE PROD. Code: K135 N/A Pv1J#1A 2004 INSTALLED NO

7. Description of Work REPLACE RELIEF VALVE, PIPE, FLANGE, NUTS & STUDS. PER EC#355050
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 32 psi Test Temp. 55 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO#00803477-02 / EC#355050 Applicable Manufacturers uata ~eponsto ~e auacnea CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of AI~t~thorization No. Not Applicable Signed )~ 5/~_~ ~ ~ Date II/1~ ,20 y~

or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of IllinoIs and employed by HSB CT of Hartford, CT have in9pected the components described in this Owners Report during the period

_____________ to ,/~ , and state that to the best of my knowledge and belief, t~SeOwner has pertomiec1ex~minations and taken corrective measures described in this Owners 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 Owners Report.

Furthermore, neither the inspector nor his employer shall be liable in any manner for any personal injury or roperty dama$e or a loss of any kind arising from or connected with this inspection.

___________________ Commissions ____________________

Inspectors Signature National Board, State Province, and Endorsements Date: ~(4~ ~7 ,20 L9~

(Final)

DOCUMENT NO.: 5A REV. NO.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl Owner ExeIon Nuclear Date 4/5/06 Name 4300 Wlnfield Road, Warrenville, IL Sheet 1 of 1 Address Plant Byron Nuclear Power Station Unit 00 Name 4450 N. German Church Road, Byron, IL Work Order No. 00881400-02 Address Repair Organization, P.O. No., Job No., etc.

Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address Identification of System WO CHILLED WATER Applicable Construction Code ASME Section III 1974 Edition, S76*Addenda, 1634-2 Code Case Applicable Edition of Section XI Used for Repair/Replacement Activity: 2001 Edltlon/2003 Addenda Section XI Code Case(s) NONE Identification of Components ASME Corrected, Code National Removed, or Stamped of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. identification Built MTG~FLANGE CARRIER 202626 139923 OWOO1CB 1978 CO RRECTED YES END) CORP.

(WEST CARRIER 202626 139923 OWOO1CB 1978 COR RE CTED YES COVER) CORP.

7. Description of Work REPAIR ERODED AREAS BY WELDING AND MACHINING
8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 72 psi Test Temp. 75 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO# 00881400-02 Applicable Manufacture?~ aaRePortsto De attacrieci ASME Section ffl ND-4130 1992 Edition invoked for repair examination criterion.

.~. .~

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

Type Code Symbol Stamp NoAPPl1(~b~

Certificate of Auth~ior~No Not Applicable Date ____

~~or Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned,holding a valid commission issued by the National Board of Boiler and Pressure Vessel inspectors and the State or Province of Illinois and employed by HSB CT of ~Iartf9rd,CT have inspected the components described in this Owners Report during the period

_____________ to ______________ , and state that to the test of my knowledge and belief, th~OIner has perform~ex&ninations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code, SeCtiOfl XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerningthe examinations and corrective measures deScilbed in this Owners Report.

Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property dame or a loss of any kind arising from or connected with this inspection.

_________________________ Commissions ~ 4i5/

Inspectors Signature National Board, State Province, and Endorsements Date: _____________,20 ~

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

1. Owner Exelon Nuclear Date 11/3/05 Narm 4300 Winfield Rd. Warrenville, Il. 60555 Sheet I of I Address
2. Plant Byron Nuclear Power Station Unit 01 Nan~

4450 N. German Church Road, Byron, Ii. Purchase Order 00403938 Address RepairOrganization, P.O. No., Job No., etc.

3. Work Performed by Crane Nuclear, Inc Type Code Symbol Stamp NR Nan~ Authorization No. NR-24 860 Remington Blvd., Bolingbrook IL 60680-5388 Expiration Data February 17,2006 Addesas
4. Identification of System XX (spare valve)
5. (a) Applicable Construction Code Section III 1974 Edition, W/75 Addenda,N/A Cede Case (b) Applicable Edition of Section XI Utilized for Repairs or Replacement Components 19 89
6. Identification of Components Repaired or Replaced and Replacement Components Natk,nal Repaird. .ASME Nanar of Maine of Mauufactwnr board Oth~ Year Rephoed, Code; Staep,ed Conçoneis Mainiacturer Serial Mo. No. Ideatificatain ~ or Replacement (Yes or No)

DISC, VALVE Anderson N04-2337-O1O A120 1977 Greenwood N/A REPLACED NO DISC, VALVE Anderson A982-3 A120 1991 NO Greenwood N/A REPLACEMENT BUSHING, Anderson A120 REPLACED HINGE PIN Greenwood N04-2341-003 N/A 1977 NO BUSHING, Consolidated HT#9R092-LGO A120 REPLACEMENT HINGE PIN Power Supply N/A 2005 NO BOLT, HEX Anderson N04-2309-004 A120 NO Greenwood N/A 1977 REPLACED BOLT, HEX NOVA Machine HT# 7404339 Al 20 REPLACEMENT NO Products N/A~ 200~

NUT, HEX Anderson N05-2107-002 N/A A120 1977 REPLACED NO SLOflED Greenwood NUT, HEX NOVAMachine HT# 8079541 A120 1998 REPLACEMENT NO SLOTFED Products N/A Valve Body Anderson A120 Repaired NO Greenwood N04-2336-00l N/A 1977 Valve Flange Anderson N05-2104-023 N/A A120 1977 Repaired NO Greenwood

7. Description of Work Weld repair of flange and seating surfaces and replacement of internal valve parts
8. Test Conducted: Hydrostatic ~ Pneumatic 0 Nominal Operating Pressure 0.

Other [J Pressure 450 psi TestTemp~.ambient °F Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8-1/2 in. x 11 in.,

(2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded atthe top ofthis form.

This form has been electronically generated.

FORM NIS..2 (Back)

9. Remarks: Repair and replacement per P0 00403938, see attached NR-l for description of vendor work activities.

Applicable Manufacturers Data Repoits to be attached CERTIFICATE OF COMPLIANCE We certify that the statements made in the report are correct and this Repair/Replacement conforms to the rules ofthe ASME Code,Section XI.

Type Code Symbol Stamp NOT APPLICABLE Certificate of Authorization No. NOT APPLICABLE Expiration Date NOT APPLICABLE Signed J~*AJ~ p. /~4(~~1~))~j /,4)47v,~ Date /f - ~ ,20 05 CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of ILLINOIS and employed by H.S.B. CT of Hartford, CT. have inspecte5l th,e components described in this Owners Report during the period to , and state that to the best of my knowledge and belief, the~w~ has performed examinations and tak~n~orrective measures described in the Owners 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 Owners Report. Furthermore, neither the Inspector nor his employer shall be liable in any mapner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection.

l,~eoora Commissions /4j~. ~1~L east bead,ale ~d tudealsailta Date ,4#~/,,~ ,20 p5

CORRECTED COPY FORM NR-I REPORT OF REPAIR MODIFICATION OR REPLACEMENT ~

TO NUCLEAR COMPONENTS AND SYSTEMS IN NUCLEAR POWER PLANTS I. Work performed by CRANE Nuclear. Inc. P0 #000403938, Rev. 004- 002 (eane OF ~4RClDftc,te tot&e) (P.O ac. job so~ ~,~

860 Remington Blvd.. Bolingbrook. IL 60440

(

2. Owner Excion Generation Company LLC

(

P0 Box 805388, Chicago, IL 60680-5388

(.~eai)

3. Name, address and identification of nuclear power plant Byron Nuclear Station 4450 North C~ermanChurch Rd., Byron IL 61010
4. System N/A 5a. Items Which Required Repair, Modification, or Replacement Activities Sb. Items Installed During Replacement Activities

- Identification I Construction Code I TyVeof ~ TName Mfg. J Mtg. Natl Bet.

No.

Jurisd.

No.

Year Built Edition/

Addenda Code Case(s)

Code Class kern ~ Scrial No, -

N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A

-- ~ ~t I -~1 I. I I 1 I I

6. ASME Code Section XI applicable tbr inscryice inspection: None None None (CodeCea(a))

(d(ttoi) (addendS)

7. ASME Code Sec tiOn XI used for repairs, modifications, or replacements: 1989 None None (cdeion) (adatcada) COde Cate(s))
8. Construction C ode used tar repairs, modit,catiotts, or replacements: 1974 Winter 75 None (oiit~oo (addmd~) (Code C~s))
9. Design responSib (titles Anderson, Greenwood and Co. (HousonJ2cj
10. Tests conduCtcd: hydrostatic ~ pneuncatic D design pressure 0 pressure p~iCode Case(s)

Pc i~)313~

NATIONAL BOARD INSPECTION CODE LI. Description ofwork - Clean & blast valve Body, inepect, grindlmachine Flange & Seating surface, PT Flange &

(sane o(peoçaa(y (dead.d ndd~ioaatiScel(s) at tkcic~4u)~ app licabte)

Surface, repair weld, machine repair area, PT repaw area, reassemble using customer supplied parts, performed Hydrostatic Shell & Seat tests, deaned. ~NR Stamped, painted, ship. The following customer supplied parts were Replaced:

PART CAT ID# SERJAL# PART CAT ID SERIAL#

BushingLlnk 38586-1 N/A ..4lingePinBushing 21094-1 N/AIIT#9R092.LGO -

Cotter Pin - 483579 N/A Torsion Spring 35594-2 N/A Bushing Seal 483607-4 N/A Hinge Pin 38515-1 N/A Hinge Pin Sleeve 483760 N/A Linkage Link 35474-2 N/A B ptt Seal 496187 N/A Heheojl 35544-2/35544-I N/A 4

4lex Nut 20610-1 N/A Hi #8079541 Washer 792001

  • 4-4ex Screw 20704-1 WA Hi C 7.4O43O97~4339fl4 /.~

6

.,,Valve Plate (DIsc) 21090-1 WAA9S2-3 ._ti ~__~\.~

12. Remarks CNISONo.27573-02 Description of Valve: 6 Model CVIB-061 5-SCM-N8, I50#, Check Valve Original Equipment Manufacturer was Anderson, Greenwood and Company (Houston, TX)

CERTIFICATE OF COMPLIANCE I, Jerome A. Kurowski. P.E. , eertity that to the best ofmy knowledge and beliet the statements made in this report arc Coatect and the repair, moditication or replacement activities described above conform to Scction Xl UI the ASME Code Snd the National Board Inspection Code NR~rules.

National Board Certificate 01 Authonzation No. NR.24 to use the NR stan~~ expires February Il . 2006 NR Certificate Holder CRA E Nuclear, Inc.

Date Nov. 3 , 2005 Signed ~ Sr. Quality Assurance Engineer (asat~sa~ ne ) (tithe)

CERTIFICATE OF INSPECTION I. Lee Malabanan , holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and certificate olconspetency issued by the jurisdiction of Illinois and employed by HSBCT of Hartford, CT have Inspected the repair, moditication orreplacement described in this report on Nov mbe ).,, . 2005 and state that to the 1

best olmy knowledge and beliet, this repair, modification or replacenient activity has been completed in accordance with Section XI oIthe ASME Code and the National Board Inspection Code NR~ rules.

By signing this certif,cai~,neither the undersigned nor my employer snakes any warranty, expressed or implied, concerning the work described in this report. Furthermore, neither the undersigned nor my employer shalt be liable an any manner tbr any personal injury, properly damage or a loss ot any kind ansing Irom or connected with this inspection.

Date Nov. 3 , 2005 Signed ~.___\~A_.L.t.a___~ Commissions NB 8756 ANI. IL 1085 tlepccwe) Nat~astltawd(aa.1 coda. .nestU,pwndaCUoe. sodaw I lee Matato*~an

FORM N1S-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 10/06/06 Name 4300 Wlnfield Road, Warrenville. IL Sheet 1 of 1 Address
2. Plant Byron Nuclear Power Station UnIt 0 Name 4450 N. German Church Road, Byron, IL Purchase Order No. 406305 Address RepaIr Organization, P.O. No., Job No., etc.
3. Work Performed by Anderson Greenwood Type Code Symbol Stamp Not Applicable Crosby Name Authorization No. Not Applicable 43 Kendrick St Wrentham, MA 02093 Expiration Date Not ADDlicabie Address
4. Identification of System XX~SPAREVALVE(6uSWING CHECK)
5. (a) Applicable Construction Code ASME Section lii 1974 EditIon, W75 Addenda, NONE Code Case (b) Applicable Edition of Section Xl Used for Repair/Replacement Activity: 2001 EdltionI2003 Addenda (C) Section Xl Code Case(s) NONE
6. Identification of Components ASME Corrected, Code National Removed, or Stamped Name of Name of Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification BuIlt VALVE BODY END ANDERSON GREENWOOD NO.4-2336-001 NJA VLV S/N N26076 1990 CORRECTED YES FLANGE FACES VALVE DISC ANDERSON A925-2 N/A VLV S/N N26076 1990 PLATE GREENWOOD REMOVED NO VALVE DISC ANDERSON N97552 N/A VLV S/N N26076 2005 INSTALLED NO PLATE GREENWOOD 006 DRILLED HEX ANDERSON B047 N/A HEAD BOLT GREENWOOD VLV S/N N26076 1993 REMOVED NO DRILLED HEX NOVA MACHINE HI: 7404339 N/A VLV S/N N26076 2005 INSTALLED NO HEAD BOLT PRflflI ICTS SLOTTED HEX NOVA HI 8079541 N/A VLV S/N N26076 1991 NUT MACHINE REMOVED NO NOVA

. SLOTTED HEX MACHINE HT: 8079541 N/A VLV S/N N26076 1998 INSTALLED NO NUT PRODUCTS HINGE PIN ANDERSON B487 N/A VLV S/N N26076 1999 REMOVED NO BUSHING (2) GREENWOOD B859 S B859 HINGE PIN ANDERSON N97556.33- N/A VLV S/N N26076 1999 2005 INSTALLED NO BUSHING (2) GREENWOOD

7. Description of Work Machine valve body end flange gasket seating surfaces to restore condition. Replace Valve disc, hex head bolt, slotted hex nut and hinge pin bushings.
8. Test Conducted: Hydrostatic 0 Pneumatic J Nominal Operating Pressure 0 Exempt~

Other 0 Pressure __________ psi Test Temp.

Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks Purchase Order No. 406305 Applicable Manufacturers Data lieports to oe auacnea CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not ApplIcable Certificate of At~orizationfip. Not Applicable Signed (1~ ç~& (~4 Date c~1 ,20 O&~

Owner r Owners Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of IllInois and employed by HSB CT of Hartford, CT have ins ed the components described in this Owners Report during the period

_____________ to ______________ , and state that to the best of my knowledge and belief, e wner has perform examinations and taken corrective measures described in this Owners Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owners 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 ______________________

Inspectors Signature National Board, State Province, and Endorsements Date: ~ // ,20 I~t~

(Final)

Section 6.0 Containment Inservice Inspection Report

BYRON STATION UNIT 1 REFUELING OUTAGE 14 INSERVICE INSPECTION REPORT EC 363076 Rev. 0 EVALUATE CONDITIONS THAT DID NOT MEET THE ACCEPTANCE CRITERIA DURING THE 2~IWL 5-YEAR CONTAINMENT CONCRETE SURVEILLANCE Reason for Evaluation/Scope:

This evaluation is being performed to address all conditions that exceeded the acceptance criteria established by the Owner in surveillance packages for the conduct of the 2nd IWL containment concrete surveillance (per Ref.s 2 & 3) at Byron. These conditions were documented individually in the following IRs:

1) IR #515883: CORROSION LEVELS FOR TENDON HO1EF-F CAN IN U-2 FAILS AC (the acceptance criteria is no active corrosion).
2) IR #515877: CORROSION LEVELS FOR TENDON HO1AC-C CAN IN U-i FAILS AC (the acceptance criteria is no active corrosion).

The above conditions are evaluated as acceptable since adequate design margins exist and therefore, no repair/replacement is required until the 25th~yrtendon surveillance (scheduled in 2009) where these cans will be replaced like for like.

This evaluation includes the requirements of the Evaluation Report section of Ref.1. As such, the following items have been addressed in this evaluation report:

1) The cause of the condition that does not meet the acceptance criteria,
2) The applicability of condition to the opposite unit,
3) The acceptability of the concrete containment and hence, the acceptability of the condition,
4) Whether or not repair/replacement activity is required and,
5) Extent, nature and frequency of additional examinations.

In the Detailed Evaluation portion of this document, both conditions described in the IRs above are addressed.

Detailed Evaluation:

1) The Unit-2 tendon grease can HO1EF-F and Unit-i tendon grease can HO1AC-C exhibited active corrosion as indicated by the presence of a reddish layer of corrosion on the outer surface of the cans. This condition was observed during the conduct of the 2nd IWL 5-yr containment structure concrete surfaces and exceeded the acceptance criteria established by the Owner (provided in Refs. 3 & 2 respectively and given here as Attachment 1). The grease cans are located at the base of the containment structures in enclosed buttresses with moisture present on the floor of the buttresses. It is the presence of this moisture in this environment that had contributed to the corrosion on the cans. The moisture has since been removed and no source of new moisture has been identified.

Upon close examination of the corrosion condition of the tendon grease cans, it was noted that the corrosion is not in the form of delamination and only as a thin layer of dust. Based upon the freshness of the color of the corrosion products and the fact that these grease cans were not identified as having corrosion in the 1st IWL 5-yr containment concrete surfaces examination Section 6.0 Page 1 of 5

BYRON STATION UNIT 1 REFUELING OUTAGE 14 INSERVICE INSPECTION REPORT EC 363076 Rev. 0 EVALUATE CONDITIONS THAT DID NOT MEET THE ACCEPTANCE CRITERIA DURING THE 2~IWL 5-YEAR CONTAINMENT CONCRETE SURVEILLANCE (Refs 4 & 5), it was determined that active corrosion is taking place. However, it was also determined that only superficial metal loss on the can surfaces had taken place. No corrosion was taking place on the can bolts and the welds also were unaffected.

The tendon grease cans only hold grease and do not serve any other structural function. The grease cans are made out of a 1/8 steel sheet rolled into a tube and welded to two 3/4 thick plates (lid and flange) to complete a cylinder (Ref. 8).

The amount of metal loss due to the observed corrosion is minimal and considering the length of time it has taken for the corrosion to develop, it is acceptable and it will not challenge the structural integrity of the grease cans and the cans will retain their ability to hold grease. The grease can replacement is required during the 25th~yrtendon surveillance (scheduled in 2009 per Refs 6 & 7). Instructions have been added to the work orders (Refs 6 & 7) to ensure replacement cans are procured and installed.

These grease cans will also be inspected one additional time prior to the 3rd 5-yr containment concrete examination surveillance to monitor the condition of the corrosion. This is tracked by ATIs 515883-03 and 515877-03 for Units 2 and 1 respectively. Therefore, although the observed condition exceeded the acceptance criteria established in Refs 2 & 3, it met the acceptance criteria for the external grease can examinations of section 4.3.1 of Ref. 9.

During the conduct of this surveillance, all tendon grease cans at both Units were examined and no active corrosion was observed on any of the remaining grease cans.

The frequency of the containment concrete surfaces examination remains at 5 years with the additional examination scheduled once prior to the 3rd 5-yr surveillance.

==

Conclusion:==

The active corrosion on tendon grease cans HO1EF-F (Unit-2) and HOiAC-C (Unit-i) as documented in this evaluation is acceptable (does not challenge the ability of the tendon grease cans to hold grease) without additional corrective actions until they are replaced in 2009 (per Refs 6 & 7).

The existing frequency of concrete surfaces examination surveillance (every 5 years) is therefore, considered adequate per the current Concrete ISI Program requirements. The additional examinations are tracked by ATIs 515883-03 and 515877-03 for Units 2 and 1 respectively.

References:

1) 2001 Edition with the 2003 Addenda of ASME Section Xl, Subsection IWL, Paragraph IWL-3310
2) WO #7i3045-Oi (Unit-i)
3) WO #713046-01 (Unit-2)
4) WO #99238605-Oi (Unit-2)

Section 6.0 Page 2 of 5

BYRON STATION UNIT 1 REFUELING OUTAGE 14 INSERVICE INSPECTION REPORT EC 363076 Rev. 0 EVALUATE CONDITIONS THAT DID NOT MEET THE ACCEPTANCE CRITERIA DURING THE 2nd IWL 5-YEAR CONTAINMENT CONCRETE SURVEILLANCE

5) WO #99238606-Oi (Unit-i)
6) WO#943328-0i (Unit-i)
7) WO #943330-01 (Unit-2)
8) Inland Ryerson drawing No. i7OWi8R (Attachment 2).
9) ER-AA-330-006 procedure (Rev.03)

Answers to applicable DAR questions:

Question 4.i.4.i:

The containment structures are designed to contain radioactive material that may be released from the reactor core following a design basis Loss Of Coolant Accident.

Additionally, they provide shielding from the fission products that may be present in the containment atmosphere following accident conditions. The tendon grease cans function to hold tendon sheathing protection medium.

Question 4.1 .4.2:

The containment structures are Safety-Related.

Question 4.1 .4.3:

The containment structures are seismically qualified.

Question 4.i .39:

The tendon grease cans only serve to retain grease and therefore, must only be able to support self weight and any applicable weight of grease (primarily only the grease inside the can). They are not subject to any other civil or structural loading requirements.

Question 4.1.40:

The grease cans are not safety-related and are not seismically qualified.

Preparer: Nader Vakili Date: 10/20/06 Reviewer: Ron Janowiak Date: 10/25/06 Approved: Ken Kovar Date: 10/26/06 Jeff Hendricks Date: 10/3i/06 ANII Representative Section 6.0 Page 3 of 5

BYRON STATION UNIT 1 REFUELING OUTAGE 14 INSERVICE INSPECTION REPORT EC 363076 Rev. 0 EVALUATE CONDITIONS THAT DID NOT MEET THE ACCEPTANCE CRITERIA DURING THE 2nd IWL 5-YEAR CONTAINMENT CONCRETE SURVEILLANCE Attachment 1:

Recordable indications:

Cracks, exposed rebars or other metallic items, grease leakage, moisture, leaching, settlement, deflections, popouts, voids, spalls, honeycombs, bug holes, corrosion, scaling, coating deteriorations (including damage, flaking, blistering, peeling or missing coating), abrasions, wear, efflorescence, deviations from design drawings, and other irregularities.

Acceptance Criteria per IWL 3211 for components subject to the examination Category L-A requirements of IWL subsection (there are no augmented examinations) shall be as follows:

General conditions:

a) No evidence of unusual contamination, foreign material or debris.

b) No abrasion, erosion, cavitation, wear or any other degradation mechanism resulting in significant loss of concrete material.

c) No unusual bulges on containment vessel structure.

d) No deviation from the design drawings.

e) No other conditions specified or not specified in the Recordable Indication Type Codes table of Attachment 6 of ER-AA-335-018 procedure that may violate the containment leak-tight integrity.

Tendon anchorage grease cans:

a) No deformed or sheared threads in the zone of thread engagement of bolts, studs or nuts.

b) No localized general corrosion that reduces the bolt or stud cross-sectional area.

c) No bending, twisting or deformation of bolts or studs to the extent that assembly or disassembly is impaired.

d) No fractured bolts, studs or nuts.

e) No evidence of damage or discontinuities that may prevent an acceptable gasket seal between the bearing plate and the grease can.

f) No bolting conditions that do not meet design/material specifications/drawings.

g) No evidence of active corrosion.

h) No evidence of grease leakage exceeding 10% of duct volume of the associate tendon.

Coated and uncoated concrete surfaces:

a) No evidence of flaking, peeling, blistering, discoloration or other signs of distress other than caused by mechanical damage.

b) No evidence of active coating wear or erosion.

c) No appearance of leaching or concrete attack.

d) No evidence of missing required coating.

e) No harsh environments that may reduce the life of the coating.

f) No popouts, scaling, spalls and bug holes of any shape and size that breach the concrete cover.

g) No corrosion staining of undefined source on the concrete surfaces.

h) No cracks greater than .04 in maximum width.

i) No settlement or deflection visible to the unaided eye.

j) No occurrence of exposed reinforcing steel other than nonstructural exposed rebars, embedded metallic or nonmetallic items that do not adversely impact the structural function of the components.

k) No apparent patch or repair on the concrete surface.

I) No wetness other than temporary moisture.

m) No surface Efflorescence other than those from adjacent non-IWL components.

Items exceeding the acceptance criteria shall be considered suspect areas and would require introduction into the plants Corrective Action Program and, resolution in accordance with IWL section 3000 (and applicable parts of section 4.7 of ER-AA-335-018). If a documented resolution, either complete or ongoing, exists that adequately addresses the as-found observed condition, it need not be considered a suspect area and should be recorded for information only.

Recordable Indications that are not classified as suspect areas do not require documentation in the plants CAP.

Section 6.0 Page 4 of 5

BYRON STATION UNIT 1 REFUELING OUTAGE 14 INSERVICE INSPECTION REPORT EC 363076 Rev. 0 EVALUATE CONDITIONS THAT DID NOT MEET THE ACCEPTANCE CRITERIA DURING THE ~ IWL 5-YEAR CONTAINMENT CONCRETE SURVEILLANCE Attachment 2:

U.D Hfi .~4PJA1~11~4~n 3/4 t*.

L~Mc~~~ER AC~N~ PRAW~ ~L~,NGI1 ~ ~fSQ~ 3/4~k.

In, t....,.nnl *nA.n. I I1LbL~ 1UtL~& ~ x .125,L3~~WALL OR ASJ~M A 56* CR $H~TBUTTVELOED 170 WIRE GREASE CAN rni~~ CON8TRIJCT1QH

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~ T~L~JL~~ ~4 ~ !~1(

r41 hL kiT*F,i~1~Pt P~ODLJCT8 COMPANY Yt lJ~ ~ t~~ft. POST.TtI~*OpII,~

I. DJVu$~

Section 6.0 Page 5 of 5

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