BYRON 2007-0055, B2R13, Spring 2007 Outage, Inservice Inspection Summary Report, for Inspection Activities from October 12, 2005 to May 3, 2007, Section 5.0 (Continued) Form NIS-2: Repairs/Modifications Through End

B2R13, Spring 2007 Outage, Inservice Inspection Summary Report, for Inspection Activities from October 12, 2005 to May 3, 2007, Section 5.0 (Continued) Form NIS-2: Repairs/Modifications Through End

ML072120513
Person / Time
Site:	Byron
Issue date:	07/10/2007
From:	Exelon Generation Co, Exelon Nuclear
To:	Office of Nuclear Reactor Regulation
References
BYRON 2007-0055
Download: ML072120513 (58)

Text

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 04/06/07 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. 00790202-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Pertormed by Byron Mechanical 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 SX ESSENTIAL SERVICE WATER SPARE ASSEMBLY

5. (a) Applicable Construction Code Section III 1974 Edition, Wf75 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 VELAN ENG. S/N: 4971 N/A CAT ID 1393419-1 2005 INSTALLED YES DISC

7. Description of Work TACK WELD VALVE DISC TO DISC UNION AND RETURN TO STORES.

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

Other U 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 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 (Back)

9. Remarks WO#00790202-O1 Applicable Manufacturers Data Heports to De attacflecl 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 ç\\~ 5 ~ C~crJ Date c/ILf ,20 y-7 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 inspect,d the components described in this Owners Report during the period

______________ to 71/9/117 , and state that to the best of my knowledge and belief, t e wner has performe 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 r a loss of any kind arising from or connected with this inspection.

_________________________ Commissions /iI -

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

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 04/06/07 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. 00790202-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Pertormed by Byron Mechanical 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 SX ESSENTIAL SERVICE WATER SPARE ASSEMBLY

5. (a) Applicable Construction Code Section III 1974 Edition, Wf75 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 VELAN ENG. S/N: 4971 N/A CAT ID 1393419-1 2005 INSTALLED YES DISC

7. Description of Work TACK WELD VALVE DISC TO DISC UNION AND RETURN TO STORES.

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

Other U 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 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 (Back)

9. Remarks WO#00790202-O1 Applicable Manufacturers Data Heports to De attacflecl 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 ç\\~ 5 ~ C~crJ Date c/ILf ,20 y-7 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 inspect,d the components described in this Owners Report during the period

______________ to 71/9/117 , and state that to the best of my knowledge and belief, t e wner has performe 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 r a loss of any kind arising from or connected with this inspection.

_________________________ Commissions /iI -

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

DOCUMENT NO.: 9.0 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 04/08/07 Name 4300 Wlnfleld Road, Warrenville, IL Sheet 1 of 1 Address

2. Plant Byron Nuclear Power Station Unit 02 Name 4450_N. German Church Road, Byron, IL Work_Order No. 00827538 01 -

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

3. Work Performed by Shaw/Stone & Webster 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 ESSENTIAL SERVICE WATER [SX]

1986 Edition/i 987 Addenda (Valve)

5. (a) Applicable Construction Code ASME Section Ill 1974 Edition, S75 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 HT#2O16ANR N/A 2007 Installed No Run Weklolet 4 Gate Valve Flowserve S/N: BC465 N/A 2006 Installed Yes

7. Description of Work ADD 4 DRAIN UNE AND 4 VALVE TO UNE 2SX13A-36

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 90 psi Test Temp. 67 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: 00827538-01 Applicable Manufacturers Data ~epons 10 oe anacnea 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 Aut~orizationNo. Not Applicable Signed ~-~---~ ~5 ~j~lj~ ~ Date sjie ,20 07 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 inspected the components described in this Owners Report during the period

/JS. P7 to.1 4/ p7 , 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 dame or a loss of any kind arising from or connected with this inspection.

Commissions /41- /4q5~(/

Inspectors Signature National Board, State Province, and Endorsements Date: ~ , 20 07 (Final)

Document No.: 7.0 Revision No.: 0 FORM NIS-2 OWNERS REPORT FOR REPAIRJREPLACEMENT ACTIVITY As Required by the Provisions ofthe ASME Code Section XI

1. Owner Exelon Nuclear Date 4/14/07 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of 1 Address

2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, IL Work Order No. 00836116 01 -

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

3. Work Performed by Shaw/Stone & Webster 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 ESSENTIAL SERVICE WATER ( SX)

5. (a) Applicable Construction Code ASME Section III 1974 Edition, S75 Addenda, 1702, Code Case 1773 (b) Applicable Edition of Section XI Used for Repair/Replacement 2001 Edition / 2003 Addenda Activity (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 ND-48858-20B N/A 2SX034 1978 REMOVED YES Butterfly Valve ENERTECH 11536 N/A 2007 INSTALLED YES 2SX034

7. Description of Work REPLACE VALVE 2SX034

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

Other ~ Pressure 102

__________ psi Test Temp. 67 °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 Work Order No. 0083611601 Document No.: 7.0 Applicable Manutacturers 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 ~ ~ .~ Date ~ , 20 07 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, t e 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 dama e or a loss of any kind arising from or connected with this inspection.

~9~w Commissions _________________________

Inspectors Signature National Board, State Province, and Endorsements Date: __________________ , 20 07

I Document No.: 7.1 Revision. No.: 0 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 4/14/07 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of 1 Address

2. Plant ~yron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, IL Work Order No. 00836116 01 -

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

3. Work Performed by Shaw/Stone & Webster 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 Essential Service Water [SXI

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 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 Bolt Stud Texas Bolt Co. Ht. Code: GT44 N/A 2SX034 1977 Removed No 1 1/2 X 19 3/4 Stud #2 Bolt Stud

, Nova Machine Ht. Code: 239162w N/A 2SX034 2006 Installed No 1 1/2 X 19 3/4 Products Trace Code: 0C16 Stud #2 Bolt Stud Texas Bolt Co. Ht. Code: GT45 N/A 2SX034 1977 Removed No 1 1/2X193/4 Stud#18 Bolt Stud

, Nova Machine Ht. Code: 239162 N/A 2SX034 2006 Installed No 1 1/2 X 19 3/4 Products Trace Code: OC16 Stud #18 -

Bolt Stud Texas Bolt Co. Ht. Code: GT44 N/A 2SX034 1977 Removed No 1 1/2X73/4 Stud #2A Bolt Stud

, Nova Machine Ht. Code: 239162 N/A 2SX034 2006 Installed No 1 1/2 X 7 3/4 Products Trace Code: 0C16 Stud #2A Bolt, Stud Texas Bolt Co. Ht. Code: GT44 N/A 2SX034 1977 Removed No 1 1/2X71/4 Stud#31A Bolt Stud

, Nova Machine Ht. Code: 239162 N/A 2SX034 2006 Installed No 1 1/2 X 7 1/4 Products Trace Code: 0C16 Stud #31A ~

7. Description of Work REPLACE VALVE/PIPE FLANGE STUDS/NUTS 2SX034 -

8. Test Conducted: Hydrostatic ~ Pneumatic D Nominal Operating Pressure ~

N/A Other D Pressure 102 psi Test Temp. 67 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. 00836116-01 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 Xl.

Type Code Symbol Stamp Not Applicable Certificate of &uthorization No. Not Applicable Signed ~$ivSç~__~ c24t2t~,4 Date £~/z2.. 20 07

~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 Ha5tford, 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 cfwner has performC~ex&ninations 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 damageor a loss of any kind arising from or connected with this inspection.

_________________________ Commissions _________________________

Inspectors Signature National Board, State Province, and Endorsements Date: ~ ~ ,20 07 (Final)

DOCUMENT NO.: 6.1 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 4/18/07 Name 4300_Winfield Road, Warrenville, IL Sheet 1 of 1 Address

2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, IL Work Order No. 00860234-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Shaw/Stone & Webster 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 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 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 2Sx87A8 #29625 N/A s~~8~-i 1980 Removed YES 2SXB7A-8 Consolidated HT# X22341 N/A 2SXB7A-8 2007 Installed NO Power Supply

7. Description of Work REPLACE APPROX. 14-8 OF 8 PIPE BETWEEN FIELD WELDS FW-2595 AND FW-2852

8. Test Conducted: Hydrostatic D Pneumatic fl Nominal Operating Pressure 0 Exempt 0 Other 0 Pressure 53 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 00860234-01 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 Autt~rizationNo. Not Applicable Signed ~E~Y%ç~ ~ Date S/ic ,20 v~

(bw~~~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 inspe1çted the components described in this Owners Report during the period

/~46 to q~/~j~7 ,and state that to the best of my knowledge and belief, the ner 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 ropert dam e or a loss of any kind arising from or connected with this inspection.

_______________________ Commissions /%Z~J%51 Inspectors Signature National Board, State Province, and Endorsements Date: /7 ,20 ~Y7

L DOCUMENT NO.: 6.1 REV. NO.: 0 I FORM NIS-2 OWNERS REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section Xl Owner Exelon Nuclear Date 04/16/07 Name 4300 Winfield Road, Warrenvllle, IL Sheet 1 of 1 Address

2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, IL Work Order No. 00862605-01/16 Address Repair Organization, P.O. No., JOb No., etc.

3. Work Performed by Shaw/Stone & Webster 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 SX-ESSENTIAL SERVICE WATER

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 Edition / 2003 Addenda (C)Section XI Code Case(s) NONE

6. Identification of Components

7. Description of Work REPLACE APPROX. 50 OF 6 PIPE AND 90 DEG. ELBOWS (SEE REMARKS)

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 78 psi Test Temp. 68.5 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 00862605-01/16 Applicable Manufacturers Data Heports to be attacneci Replace approximately 50 of 6 pipe and associated fittings at 3 separate locations on line 2SXA9A:

1) Pipe (Spool SX-29-4 Partial Replacement) between FW520 and prior to 2SX71O1OR and Pipe and Elbow (Spool SX-29-5 Complete Replacement) between FW520 and FW521.

2) Pipe (Spool SX-59-1A Partial Replacement) between FW2371 and first elbow shop weld east of pipe support 2SX71013R.

3) Pipe (Spool SX-59-2A Partial Replacement) approximately 8-1/6 of horizontal pipe running north/south between two elbow shop welds.

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~rizationNo. Not Applicable Signed ~ . ~ (r9_ Date _________ , 20 07 Owne 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 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 daThage or a loss of any kind arising from or connected with this inspection.

________________________ Commissions ________________________

Inspectors Signature National Board, State Province, and Endorsements Date: // ,20 07 (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 Xl

1. Owner Exelon Nuclear Date 1/4/2007 Name 4300 Winfield Road, Warrenvllle, IL Sheet 1 of 2 Address

2. Plant Byron Nuclear Power Station Unit 00 Name 4450 N. German Church Road, Byron, IL Work Order No. 00938349-02 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 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 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 Chicago Tube & HT# 23438 N/A OSX85AB PIPE 2 SCHED 80 Iron MK: CB SX-100-84-3 1980 REMOVED NO CONSOLIDATED HT: A82900 N/A OSX85AB INSTALLED PIPE 2 SCHED 80 POWER SUPPLY CAT ID 24507-1 2006 NO ELBOW BONNEY LOT # M240 N/A OSX85AB 1983 REMOVED NO 2 SCHED. 80 FORGE SX-100-84-3 ELBOW CONSOLIDATED LOT#: 76150 N/A OSX85AB 2006 INSTALLED NO POWER SUPPLY 2 SCHED. 80 CAT ID 47207-1 2 COUPLINGS BONNEY BM35 N/A OSX85AB 1977 REMOVED NO (QTY2) FORGE G&W TAYLOR HT# 20598 OSX85AB THREADED ROD FORGE SX-100-84-3 N/A OFE-SX123 1978 REMOVED NO NOVA MACHINE HT#: 77091 2001 THREADED ROD PRODUCTS HT#: 224938 N/A CAT ID 25042.1 INSTALLED NO 2004 G&W TAYLOR HT# 6024521 N/A OSX85AB 1978 REMOVED NO NUT5/8-11 FORGE SX-100-84-3 OFE-SX123 NOVA MACHINE HT#: 7220464 CAT ID 37029-1 NUT 5/8-11 PRODUCTS N/A OSX85AB 2004 INSTALLED NO TRACE: K365 OFE-SX123

7. Description of Work REPLACE PIPE SECTION AND FITTINGS. REPLACE BOLTING ON ORIFICE FLANGE. REPLACE U-BOLT & NUTS ON SUPPORT 1SX79007R. ORIFICE FLANGES TO BE REUSED

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt 0 Other 0 Pressure 148 psi Test Temp. 45 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# 00938349-02 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 ot~AuthorizationNo. Not Applicable Signed  ?~~C,,/p~Q~9._ ~ Date z/s- ,20 £7 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 I4~47 , 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 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~eor a loss of any kind arising from or connected with this inspection.

___________________________ Commissions ,II~ /J$~f Inspectors Signature National Board, State Province, and Endorsements Date: ________________ ,20 ~,7

FORM NIS-2 SUPPLEMENTAL SHEET

1. Owner Exelon Nuclear Date 1/4/2007 Name 4300 Winfield Road, Warrenville, IL Sheet 2 of 2 Address

2. Plant Byron Nuclear Power Station Unit 0 Name 4450 N. German Church Road, Byron, IL Work Order No. 00938349-02 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 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 Section III 1974 Edition, S75 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 1 SX79007R U-BOLT w/ Nuts ELCEN P/N A-000875 N/A 1980 REMOVED NO P/N TUS.020-SP CAT ID 24580-1 U-BOLT w/ Nuts BERGEN POWER N/A 1SX79007R 2006 INSTALLED NO PIPE SUPPORTS P000411383

I DOCUMENT NO.: 7.0 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 3/30/07 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. 00963779-01/19 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Shaw/Stone & Webster 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 SX(ESSENTIAL SERVICE WATER) 1986 Edition, 1987 Addenda (Valve) 1974 Edition, S74 Addenda (Support)

5. (a) Applicable Construction Code ASME Section III 19 74 Edition, S75 Addenda, N-249-1 Code Case thru 5 (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 National Corrected, Code Name of Name of Manufacturer Board Other Year Removed, or Stamped Component Manufacturer Serial No. No. Identification Built Installed (Yes or No)

Weldolet, 3 Outlet, Sch. Consolidated 40, SA-234 WPB Power Supply Ht#: 3433ANB N/A 1 SX1 1 B-3 2007 Installed NO Valve, Gate, 3, 150#,

SA-351 Gr. CF8M Flowserve S/N: BC427 ~ N/A 1SX271B 2006 Installed YES Flange, 3 RFWN, 1 50#, Consolidated Ht4t: 3M40774 N/A SA-105 Power Supply. 1 SX1 1 B-3 2003 Installed NO Flange, 3 RFWN, 1 50#, Consolidated 18-3 2003 Installed SA-1 05 Power Supply Ht#: Si 324 N/A 1 SX1 NO Rod, Threaded, Nova Machine Ht: 230111 -~

N/A 1 SX1 1 B-3 5/8-11, SA-193Gr. 87 Products Ht. Code: P514 2005 Installed NO Nut, Heavy Hex, (2 ea.) Nova Machine Ht: B87035 /

5/8-11 SA-194 Gr.2H Products Ht#: B711 N/A 1SX11B-3 2001 Installed NO Nut, Heavy Hex, (6 ea.) Nova Machine Ht: B87035 5/8.11 SA-194 Gr.2H Products Ht#: VCF N/A 1 SX1 1 B-3 2000 Installed NO Pipe, 3, SCH. 40 Consolidated Power Supply HT#D00103 N/A 1SX11B-3 2006 Installed NO SA-106 Gr. B Elbow, 3, 900, (4 ea.) Consolidated Power Supply Ht#: SO68B1A N/A 1SX11B-3 2007 Installed NO SA-234 Gr. WPB U-Bolt, Pipe, 3/4 Rod X Bergen Power Ht#: JB1214 ~ N/A 2SX43021G 3 Pipe, w/ Hex Nuts Pipe Supports 2004 Installed NO Cap, Pipe, 3, Sch. 40, Consolidated ..,,

SA-234 Gr. WPB Power Supply Ht#: S551A-17 N/A 1SX11B-3 2007 Removed NO

7. Description of Work INSTALL ALTERNATE FLOW PATH TIE-IN FOR lB SX CUBICLE COOLER PER EC# 356162.

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt 0 VT-3 Other 0 Pressure 110 / 12 psi Test Temp. 70 / 82 2F 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 00963779-01/19 Applicable Manufacturers Data Heports to oe anacrlea Removed pipe cap was installed under parent alternate flow path Work Order 00973172-01 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 ~thorization No. Not Applicable Signed ~p. ~~rt ~ ~ Date (~/ I( , 20 07 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 Har!~ord,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, t}~eOwner 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 d~mae or a loss of any kind arising from or connected with this inspection.

__________________________ Commissions ,~,.. /%gC/

Inspectors Signature National Board, State Province, and Endorsements Date: ~ o~P ,20 07 (Final)

I DOCUW1ENTNO.:

7.0 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 3/15/07 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. 00973172-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Shaw/Stone & Webster 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 SX (ESSENTIAL SERVICE WATER) 1986 Edition, 1987 Addenda (Valve)

5. (a) Applicable Construction Code ASME Section Ill 1974 Edition, S75 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 Southwest Removed YES Pipe, 3(6-3/4) 20391 N/A 1SXB1AB-3 1979 Fabricating Valve, Gate, 3, N/A 1SX275B 2006 Installed YES Flowserve S/N: BC426 1 50#

Consolidated .s Pipe, Seamless, 3 Power Supply Ht#: D00103 N/A 1SX11B-3 2006 Installed NO Consolidated I N/A 2007 Installed NO Elbow, Pipe, 90°,3 Power Supply Ht#: SO68B1A 1SX1 1B-3 Tee, Pipe Consolidated Ht#: P347G I 1SXB1AB-3 2007 Installed NO 3 x 3 x 3 Power Supply N/A 1 SX1 18-3 Consolidated Cap, Pipe, 3 Power Supply Ht#: S551A-17 N/A 1SX11B-3 2007 Installed NO U-Bolt, Special Bergen Power Ht#: 24993 N/A 2SX43022T 2007 Installed NO with Nuts Pipe Supports Ht#: 220642

7. Description of Work INSTALL PIPING, FITTINGS, VALVE, AND PIPE SUPPORT PER EC# 361557

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 VT-3 Other 0 Pressure 103 psi Test Temp. 70 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 009731 72-01 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 XI.

Type Code Symbol Stamp Not Applicable Certificate ot~AuthorizationNo. Not Applicable Signed ~ i1!*3. ~ (ji~~~J Date 4/7 , 20 07 co~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 performe 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 darQa e or a loss of any kind arising from or connected with this inspection.

_____________________________ Commissions -

Inspectors Signature National Board, State Province, and Endorsements Date: 7 , 20 07 (Final)

I DOCUMENT NO.: 7.1 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 03/15/07 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of 1 Address

2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, IL Work Order No. 00973172-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Shaw/Stone & Webster 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 SX (ESSENTIAL SERVICE WATER)

5. (a) Applicable Construction Code ASME Section III 1974 Edition, S74 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 2EA. Bolting, 1/2 2SX43002R ITT Grinnell N/A N/A 1979 Removed NO for Fig. 212N FIG. 212N CLAMP 2EA. Nut, 1/2 2SX43002R ITT Grinnell N/A N/A 1979 Removed NO For Fig. 212N FIG. 212N CLAMP 2EA. Nut, Jam, 1/2 2SX43002R ITT Grinnell N/A N/A 1979 Removed NO For Fig. 212N FIG. 212N CLAMP 2EA. Nut, Heavy Nova Machine 2SX43002R Hex, SA194 2H, 1/2 Ht#: 887035 N/A 2007 Installed NO Products CAT ID 37027 13 Nova Machine 0 2EA. Nut, Hex, Jam, Ht#: DQS N/A 2SX43002R 1992 Installed NO SAl 94 2H 1/2-13 Products CAT ID 36995 lEA. Screw, Heavy Nova Machine 2SX43002R Hex, 1/2X 2-1/2 Lg., Products Ht#: US Y06420 N/A 2003 Installed NO SAl 93 87 CAT ID 23093 lEA. Screw, Heavy Nova Machine Hex, 1/2X 3 Lg., Ht#: US Y06420- N/A 2SX43002R 2003 Installed NO Products CAT ID 23225 SA193 B7

7. Description of Work REPLACE CLAMP BOLTING FOR SUPPORT 2SX43002R

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt 0 VT-3 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 009731 72-01 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 ~thorization No. Not Applicable Signed ~ ~Q~Q Date _________ ,20 07

~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 ins ec~dthe components described in this Owners Report during the period

______________ to _______________ ,and state that to the best of my knowledge and belief, the O~nerhas performed 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.

_____________________ Commissions /iL- ~

Inspectors Signature National Board, State Province, and Endorsements Date: ~ 7 ,20 07 (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 Owner Exelon Nuclear Date 04/11/07 Name 4300 Winfieid Road, Warrenville, IL Sheet I of 1 Address Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, IL Work Order No. 97098856-01 Address Repair Organization, P.O. No., Job No., etc.

Work Performed by SHAW/STONE & WEBSTER Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable 36400 S. Essex Road, Wilmington, IL 60481 Expiration Date Not Appiicable Address Identification of System ESSENTIAL SERVICE WATER(SX)

Applicable Construction Code ASME Section ill 19 74 Edition, S75 Addenda, 1702, 1773 Code Case Applicable Edition of Section XI 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 ND48858-20A N/A 2SX033 1978 REMOVED YES VALVE JAMESBURY 11535 N/A 2SX033 2007 INSTALLED YES VALVE ENERTECH

7. Description of Work REPLACE BUTTERFLY VALVE 2SX033

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt 0 Other 0 Pressure 90 psi Test Temp. 67 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 97098856-01 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~orizatio~jJo. Not Applicable Signed ~ J) ~4&~ c~~~A Date _________ ,20 ~?

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 inspected the components described in this Owners Report during the period 3,,. #7 to c./$.~7 , 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 dan~ge or a loss of any kind arising from or connected with this inspection.

___________________________ Commissions /~4(4.jjj4 Inspectors Signature National Board, State Province, and Endorsements Date: ,20 97 (Final)

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 04/11/07 Name 4300 Wlnfield Road, Warrenville, IL Sheet 1 of 1 Address

2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, IL Work Order No. 97098856-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by SHAW/STONE & WEBSTER 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 ESSENTIAL SERVICE WATER(SX)

5. (a) Applicable Construction Code ASME Section III 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 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 Bolt Stud

, Texas Bolt HT: 90295 N/A 2SX033 1977 No 1 1/2 X 19 3/4 Company Trace: GT45 ~15 R emoved Nova Machine N/A 2SX033 2005 Installed No Bolt Stud

, Texas Bolt HT: 90295 NA 2SX033 1977 No 1 1/2 X 7 3/4w Company Trace: GT45 ~15A Removed Bolt Stud Nova Machine 5~

N/A 2SX033 Ce 4 2005 Installed No

7. Description of Work REPLACE TWO FLANGE STUDS IN SUPPORT OF VALVE 2SX033 VALVE REPLACEMENT

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 90 psi Test Temp. 67 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 97098856-01 Applicable Manufacturers Data~R~rts to be~tt~chéd 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~orizationNo. Not Applicable Signed a-., ~ Date .s/, g ,20 ci 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 inspected the components described in this Owners Report during the period

~ ~4. to ~,,sf. #7 ,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 injuryor~pe~am~goralossof any kind arising Commissions /4I- with from or connected /f.5~1 this inspection.

National Board, State Province, and Endorsements Date: _____________ ,20 ~~27 (Final)

DOCUMENT NO.: 7.0 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 4/14/07 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of 2 Address Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, IL Work Order No, 99217319-01 Address Repair Organization, P.O. No., Job No., etc.

Work Performed by Shaw/Stone & Webster 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 ESSENTIAL SERVICE WATER 1977 Edition W78 (Valve)

Applicable Construction Code ASME Section III 1974 Edition, S75 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)

Manufacturer Serial No. No. Identification Built RT2T FLG. Ladish Co. Ht#: 6018347 N/A 2SX98BA 1983 Removed No Consolidate Ht#: S 1324 N/A CAT ID # 25020 No FLG. Power Supply 2SX98BA 2003 Installed SWAGE Chicago Tube D20 N/A 2SX98BA 1983 Removed

& Iron Ht#:N53110 No SWAGE Consolidate Ht#: 2542ANB N/A CAT ID # ~ 2004 Installed No Power Supply 2SX98BA S.W. 90 Bonney Forge Lot#: M240 N/A 2SX98BA 1977 Removed No ELBOW (2)

S.W. 90 Consolidate Lot#: 76259 N/A CAT ID # 47207 2006 Installed No ELBOW (2) Power Supply 2SX98BA 80 PIPE Gulf States Ht. Code: AA N/A 2SX98BA 1977 Removed No Tube Div 80 PIPE Consolidate Power Supply HT: A82900 N/A CAT ID # 24507 2006 Installed No 2SX98BA

7. Description of Work REPLACED PIPE, FITTINGS. AND VALVE 2SX2185B.

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure 0 Exempt 0 Other 0 Pressure 78 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 Work Order No. 99217319-01 ____________________ ____

Applicable Manufacturers Data Reports to be attached Replaced portion of pipe spool S-SX-100-101-1 from flange to FW4017 excluding valve 2SX2185A.

Replaced portion of pipe spool S-SX-100-101-2 from flange to FW4019 Including valve 2SX2185B.

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~thorizationNo. - Not Applicable Signed ~ ~ - .~ . Date __________ 20 07 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 ~psp,cted the components described in this Owners Report during the period

______________ to _______________ , and state that to the best of my knowledge and belief, ttfe dwner has performód 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 datn ge or a loss of any kind arising from or connected with this inspection.

_______________________________ Commissions ~LA j~5((

Inspectors Signature National Board, State Province, and Endorsements Date: %t~c/7 ,20 07

FORM NIS-2 SUPPLEMENTAL SHEET

1. Owner Exelon Nuclear Date 4/14/07 Name 4300 Winfield Road, Warrenville, IL Sheet 2 of 2 Address

2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, IL Work Order No. 99217319-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Shaw/Stone & Webster 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 ESSENTIAL SERVICE WATER 1977 Edition W78 (Valve)

5. (a) Applicable Construction Code ASME Section Ill 1974 Edition, S75 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 3, 1 5OLB, Ladish Co. RT2T N/A 2SX98BB 1983 Removed No W.N.R.F. FLG. Ht#: 6018347 3, 1 5OLB, Consolidate Ht#: Si 324 N/A CAT ID # 25020 2003 Installed No W.N.R.F. FLG. Power Supply 2SX98BB 3 X 2 SWAGE Chicago Tube 020 N/A 2SX98BB 1983 Removed No NIPPLE & Iron Ht#: N53110 3 X 2 SWAGE Consolidate CAT ID # 43064 NIPPLE Power Supply Ht#: 2542ANB N/A 2SX98BB 2004 Installed No 2 3000#, S.W. 90 Bonney Forge Lot#: M240 N/A 2SX98BB 1977 Removed No DEG. ELBOW (2) 2 3000#, S.W. 90 Consolidate Lot#: 76259 N/A CAT ID # 47207 DEG. ELBOW (2L Power Supply 2SX98BB 2006 Installed No Gulf States Ht. Code: AA 2 SCH. 80 PIPE Tube Div N/A 2SX98BB 1977 Removed No 2 SCH. 80 PIPE Consolidate HT: A82900 N/A CAT ID # 24507 2006 Installed No Power Supply 2SX98BB 2, 150 LB. BALL ITT GrinneD 80-52894-5-91 VALVE N/A 2SX2185B 1981 Removed Yes 2, 150 LB. BALL ITT Grin nell 733744-001-002 N/A CAT ID# 1393954 VALVE 2SX2185B 2004 Installed Yes (Final)

DOCUMENT NO.: 7.0 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 4/14/07 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of 2 Address Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, IL Work Order No. 99217322-01/02 Address Repair Organization, P.O. No., Job No., etc.

Work Performed by Shaw/Stone & Webster 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 ESSENTIAL SERVICE WATER Applicable Construction Code ASME Section Ill 1974 Edition, S75 Addenda, None Code 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 Manufacturer Board Other Year Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built RT2T N/A 2SXC4AA Ladish Co. HT: 6018347 1983 Removed No FLG.

Consolidated Ht#: 3M40774 N/A CAT ID # 25020 2003 Installed No FLG. Power Supply 2SXC4A.A SWAGE Chicago Tube D20 N/A 2SXC4AA 1983 Removed No

& Iron HT: N53110 SWAGE Consolidated Ht#: 2542ANB N/A CAT ID # 43064 2004 Installed No Power Supply 2SXC4AA S.W. 90 ELBOW (3) Bonney Forge M240 N/A 2SXC4AA 1977 Removed No S.W. 90 Consolidated HT: 49870 - N/A CAT ID # 47207 2007 Installed No ELBOW Power Supply Lot#: 76150 2SXC4AA 80 PIPE Tube States Gulf Div AA N/A 2SXC4AA 1977 Removed No 80 PIPE Consolidated Power Supply Ht#: A82900 N/A CAT ID #24507 2SXC4AA 2006 Installed No

7. Description of Work REPLACED PIPING AND FITTINGS

8. Test Conducted: Hydrostatic 0 Pneumatic 0 Nominal Operating Pressure ~ Exempt 0 Other 0 Pressure 78 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 No. 99217322-01 Applicable Manufacturers Data Reports to be attached REPLACED PIPE SPOOLS S-SX-100-100-2A, S-SX-100-100-3, AND S-SX-100-100-6 IN THEIR ENTIRETY.

REPLACED PIPE SPOOL S-SX-100-100-4A FROM FW4006 TO VALVE 2SX2167A.

• • ORIGINAL VALVES 2SX2167A AND 2SX2167B WERE REINSTALLED.

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~orizationNo. Not Applicable Signed 1)ç\~ ~/4~Y~ ~ (~4~ .k Date 5/17 ,20 07 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 7 , and state that to the best of my knowledge and belief, tI~ci~wnerhas perform~JeIaminations 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 dam3ge or a loss of any kind arising from or connected with this inspection.

___________________________ Commissions ~ ,j~,-4 Inspectors Signature National Board, State Province, and Endorsements Date: ~ /7 ,20 07

FORM NIS-2 SUPPLEMENTAL SHEET

1. Owner Exelon Nuclear Date 4/14/07 Name 4300 Winfield Road, Warrenville, IL Sheet 2 of 2 Address

2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, IL Work Order No. 99217322-01/02 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Shaw/Stone & Webster 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 ESSENTIAL SERVICE WATER

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 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 3, 15OLB, Ladish Co.

RT2T N/A 2SXC4AB 1983 Removed No W.N.R.F. FLG. HT: 6018347 3, 1 5OLB, Consolidated CAT ID # 25020 2003 Installed W.N.R.F. FLG. Power Supply Ht#: 3M40774 N/A 2SXC4AB No 3 X 2 SWAGE Chicago Tube D20 No NIPPLE & Iron HT: N53110 N/A 2SXC4AB 1983 Removed 3 X 2 SWAGE Consolidated Ht#: 2542ANB N/A CAT ID # 43064 2004 Installed No NIPPLE Power Supply 2SXC4AB 2 3000#, S.W. 90 Bonney Forge M240 N/A 2SXC4AB 1977 Removed No DEG. ELBOW (3) ~

2 3000#, S.W. 90 Consolidated HT: 49870 -

N/A CAT ID # 47207 2007 Installed No DEG. ELBOW Power Supply Lot#: 76150 2SXC4AB 2 SCH. 80 PIPE Gulf States AA N/A 2SXC4AB 1977 Removed No Tube Div Consolidated Ht#: A82900 N/A CAT ID # 24507 2006 Installed No 2 SCH. 80 PIPE Power Supply 2SXC4AB (Final)

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 06/29/06 Name 4300 Winfleld 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. 00403603 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Anderson Greenwood Type Code Symbol Stamp NR Crosby Name Authorization No. NR-68 43 Kendrlck St. Wrentham, MA 02093 Expiration Date 12/11/06 Address

4. Identification of System Essential ServIce Water (SX] Spare Valve

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 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 36 Swing Check Anderson HT: 216236, Cat. ID: 1034815-1 Valve Body Greenwood Code: TPUL n/a Vlv S/N: A130 1978 Corrected Yes N04-2456-001 36~Swing Check Anderson HT: 92577 Cat. ID: 1034815-1 Valve Disc Greenwood Code: 77CI n/a Vlv S/N: A130 1978 Corrected No N04-2457-01 0 Hinge Pin Anderson HT: 615158~ Cat. ID: 1034815-1 Bushing (2) Greenwood Code: 77CU n/a VIv S/N: A130 1978 Removed Nb N04-2461 -001 Hinge Pin Anderson HT: 8998577... Cat. ID: 1034815-1 n/a 1978 Installed No Bushing Greenwood Code: B797 VIv S/N: A130 Hinge Pin Anderson HT: 8998577 Cat. ID: 1034815-1 n/a 1978 Installed No Bushing Greenwood Code: B718 Vlv S/N: A130

7. Description of Work: Machine Valve Body Seating Area. Machine and Weld Repair Valve Disc. Replace Hinge Pin Bushings

8. Test Conducted: Hydrostatic Z Pneumatic 0 Nominal Operating Pressure 0 Exempt 0 Other 0 Pressure 425 psi Test Temp. Ambient ~F Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 81/2 in. xli 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. 00403603 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 XI.

Type Code Symbol Stamp Not ApplIcable Certificate of Aut~orizationNo. Not ApplIcable Signed ~ C~~c~L Date ________ ,20 ~7 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, thiO~,nerhas pert ormá 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 ~ /X5~

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

(Final)

17-Nov-a4 ~ Co,~QCr~D C.opyl QC-435, Rev. B Sheet 1 of 2 FRM NR-1 REPORT OF I~E~PAIR[jJ, MOD CA11ONEJ, OR 1NSTALLATIOf~OF TO NUCLEAR COMPONENTS AND SYSTEMS IN NUCLEAR POWER PLANTS

1. Work performed by ANDERSON GREENWOOD CROSBY 00403603 REV. 3 (name of NR certificate holder) (P0 NO., lob No., etc.)

43 KENDRICK ST., WRBNTHAM, MA 02093 (address)

2. Owner EXELON GENERATION (name)

(address) 4450 NORTH GERMAN CHURCH ROAD

3. Name, address and identification of tuiclear power plant BYRON NUCLEAR STATION~BYRON IL.

4. System COOLING 5a. Items Which Required Repair, Modification, or Replacement Activities Identification Con~ructionCode Activity Mfg. Name/ Repair!

Type of lvffg. Serial NatI Bd. Juris. Year Section/ E+/-tion~ Code Code Mod!

No. Item Name No. No. No~ Other Built Division Addenda Case(s) Class Replace 1 36 CHECK Anderson A130 N/A N/A N/A 1978 ASME SEC. 1974 Editios N/A 3 RepaIr!

2 VALVE Greenwood m w~ ~i~l~ni 3 ,~

4 6

7 .

8 9

0 I ,

2 Sb. Items Installed During Replacement Activities Identification Construction Code Installedor Type of Replaced Mfg. Mfg. Natl Bd. Jurls. Year Secdon/ Edition! Code Code Item 5a Item No. Name Serial No. No. No. Other Built Division Addizul~ Case(s) Class Hinge Pin N/A Anderson N04-2461 -001 N/A N/A N/A 1978 ASME SEC 1974 EditIon N/A 3 Bwhings Greenwood B797-(~-pes~ ~ III W75 Addend

,~ND61IS -____

~ (?-NOy-~ ~

~ ~

~

6. ASME Code Section XI appplicable for inservice inspection: 2001 EDITION 2003 ADDENDA

7. ASME Code Section XI used for repairs, modification, or replacements: 2001 EDITION 2003 ADDENDA __________

8. Construction Code used for repairs, modifications, or replacmenfs: 1974 EDiTION W1975 ADDENDA __________

9. Design responsibilities ANDE1~SONGREENWOOD in Ti~~t~ ,nnrhutpcl. 1t~ ~ fl,i~.,,.. ~ ..... f~~SA~~ Pd! A

QC-435, Rev. B Sheet 2 of 2

11. DescriptIon ofwork (use of property identified additiopal sheet(s) or sketcl~es)is acceptable)

The v~lvewas disassembled and the body seat re-machii~land lapped. The disc was remachined and a stainless steel seat inlayed

(~e1dpackage provided ta customer). machined and lapped. The hinge pin bushings were replaced with customer supplied parts and the valve was reassembled for testing. A hydrostatic test and seat leakage test was performed. A repair tag was attached and~

pgckaged for return shipment.

12. Remarka NONE CERTIFICATE OF COMPLIANCE I, ~Thf~iIfl~ 1~Ti7i.~ certify that to the best of my knowledge and belief the statements made In this report are correct and the repair, modification or replacement activities described above conform to Section XI of the ASME Code and the National BoaniInspection Code NR rules.

National Board Certificate of Authorization No. NR-68 to use the NR stamp expires December 11. 2006 NR Certificate Holder ANDERSON GREENWOOD CROSBY (name) __

Date ~ - -ThAI - C(~~ Signed ~ Cb4 i4C~d~-~

(authorized representative) (title)

CERTIFICATE OF INSPECTION i, 112J. ~~t holding a valid commission issued by The National Board of Boiler and Pressure Ves-sel Inspectors ficate of competency issued by the jurisdiction of Massachusetts and employed by HSB Cl

- of Hartford, CF have inspected the repair, modification or replacement described in this report on 6 .~.,27 ~ and state that to the best of ~nyknowledge and belief, this repair, modification or replacement activity has been completed in accordance ~ th Section XI of the ASME Code and the National BoardInspection NR rules.

By signing this certificate, neither the undersigned nor my employer makes any warranty, expressed or implied, concerning the work described in this report. Furthermore, neither the undersigned nor my employer shall be liable in any manner for any personal injury, property damage or a loss of ~ii~ from or coimected with this inspection.

Date 7 ,2~ Signed _______________Commissions Yi 7~F3 ~ ~9~ -

C (Inspect ) (National Beard and jurisdiction no.)

,V~2,NS

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 04/16/07 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 Purchase Order No. 00417714 Rev. 4 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Anderson Greenwood Type Code Symbol Stamp NR Crosby Name Authorization No. NR-68 -

43 Kendrlck St., Wrentham, MA 02093 Expiration Date 12/11/09 Address

4. Identification of System Spare Valve (Essential Service Water-SX)

5. (a) Applicable Construction Code ASME Section Ill 1974 Edition, S76 Addenda, None 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 Built Anderson N04-2348-OO1 N/A S/N A-3485 1978 Corrected Yes Valve Body Greenwood 28712-3 Hinge Pin Anderson Bushing (2) Greenwood NO4-2353-002~ N/A S/N A-3485 1978 Removed No Hinge Pin Anderson HT 33443 N/A S/N A-3485 1997 Installed No Bushing (2) Greenwood B693 Anderson Drilled Shank Bolt Greenwood N04-2309-035 N/A S/N A-3485 1978 Removed No Drilled Shank Bolt Anderson HT 8887666 N/A S/N A-3485 1985 Installed No Greenwood HG21 ~

5/8 Slotted Hex Anderson N05-2107-003 N/A S/N A-3485 1978 Removed No Nut Greenwood 5/8 Slotted Hex Anderson HI: 041073., N/A S/N A-3485 1985 Installed No Nut Greenwood Code AM59 Valve Disc Anderson N04-2407-01O N/A S/N A-3485 1978 Removed No Greenwood Anderson B721 -3 Valve Disc Greenwood HT 7438304 N/A S/N A-3485 1997 Installed No

7. Description of Work Machine and Weld Valve Body Faces and Seat Area. Replace Hinge Pin Bushlings, Drilled Shank Bolt and 5/8 Slotted Hex Nut (See Remarks)

8. Test Conducted: Hydrostatic ~ Pneumatic D Nominal Operating Pressure 0 Exempt 0 Other 0 Pressure 425 psi Test Temp. Ambient ~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 Purchase Order No. 00417714 Rev. 4 Applicable Manufacturers Data Reports to be attached Final valve body face dimensions were out of tolerance. Valve body face to be re-worked per Purchase Order 00421825.

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 (% ~&~SL C~#~ri~l Date _______ ,20 07 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,cted 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 /%~/15f Inspectors Signature National Board, State Province, and Endorsements Date: 7~~Zi0)i(V , 20 07 (Final)

~Oift~ZV) £8d~1 QC-435, Rev. B Sheet lof 2

}ORM NR-1 REPORT OF RBPAIR1~), MODIFICATION[], OR INSTALLATION OF REPLACEMENTE]

TO NUCLEAR COMPONENTS AND SYSTEMS IN NUCLEAR POWER PLANTS

1. Work performed by ANDERSON GREENWOOD CROSBY 00417714 Rev. 004 (name of NE certificate bolder) (P0 NO., Job No., etc.)

43 KENDRICK ST., WRENTRAM, MA 02093

(

2. Owner EX~ONGENERATION (name) 4450 NORTh GERMAN CHURCH ROAD

(~)

3. Name, ad~essanal idei*ification of iuckar power plasi BYRON STATION NUCLEAR POWER PLANT 4450 NORTH GERMAN CHURCH ROAD

4. System COOLING WATER 5*. Items Which Required Repair! Modification, or Replacemete Activities Ide~flcation C~tion Code Activ~

Mfg. Name/ Repair!

Type of Mfg. Serial Nail Bd. JurIs. Year Section! EdItion! Code Code Mod!

No Item Name No. No. No Other Built Division AcWwh Case(s) Class Replace

$~.VsJve AG A2485 N/A N/A N/A 1978 ~msncm &r~si,~s N/A 3 REPAIR 6 .- - ~.,- .-

8 9

0.

1 12 Sb. Items Installed During Repiacemete Activities

~flcation Cowüucdon Code Installed or I Name!

Type of Replaced Mfg. IMfs. NMl Bd. inns. , Year Section! Edition! Code Code Item SaltenaNo. Name ISenialNo. No. No. Other Built Division Adiland~ Ca~da~Class

$~ 3odyl~ P r~ R5P*i~i AG 1

1287123 N/A N/A N/A I~I7~ ASMEmC.IR 1974 576 IA 3 A~Buihing eplaced - AG lN04-2333-002 N/A N/A N/A N/A A.V4ESBCiII 1974 S76 IA 3 f Bushing ~p4aced AG 1N04-2353-002 N/A N/A F NI #ISMESEC.W 1974 S76 N/A~ ~3

~ ~epiace~* A~ jN04-2309.035 NIA N/A N/A W~ ~ suc.m 1974 576 IA 3 Nai q~1aced AQ~~ 1N05-2107.003 N/A WA IA N/A ~~3ME~Cill 1974 $76 A~ ~3 JJ* Replaced AGa,ei 14~

4pOav09-OO04~N/A N/ M wr ~ 1974 S76 A~5~

. pj~ Replaced AG ~~00946 N/A /A_ IA_ W~ De~ 1974 S76 A DEl)

~ Disc Replaced AG , L~04-2407010 N/A N/A /A N/A A9.4E SEC.flI 1974 576 A 3

~ -g~ _~____ ~

6. ASME Code Section XI appplicable lbr inservice inspection

7. AS?~tECode Section XI used for repairs, modification, or replacennesls: 2001 2003 _____________

8. Construction Code used for repairs, modifications, or replacmeats: - 1974 S1976 _____________

9. Design re~oeslbilities ANDERSON GREENWOOD

10. Tests condected. [~Jhydrostatic Dpneumatic Odesign pressure [Jpressure 423 psig Code Case(s) ______

~ ji~y 1055 Cnçper Ave., Cobsstw.

be obuined from The Madowi Bawd o(Bolkr awl Presawe Vessel h~,ec~on, ~ 13 3 7 2 ~

QC-435, Rev. B Sheet 2 of 2

11. Description of work (use of properly identified additional sheet(s) or sketcb(es) is acceptable)

_The valve was received and visually inspected am! the body was found to be in poor condition nsst and corrosion, on both faces and the interior. A complete set of replacemem parts were sent along with the body. The body faces were re-machined to the minimum overall dimension and the seat was cit nit for weld repairing and re-machieing, Following re-machining, the body faces still had corrosion iithoard of the gasket sealing ares. but this was unacceptable to the ctisto~. At this poiit the body faces.

completely weld repaired and the seat area was also weld repaired. The body was tire re-machined to the original print dilTresioO&

All weld repair and re-machined areas were magnetic aiticle inspected befo 2jri~jan~1 aft~-machining.The seats 1

were lapped and the valve was re-assesnbled using.flle customer supplied parts;A hydrostat~t~ antf a seat leakage test were perfornrd An NRIVR tag was attached to the valve and it was packaged for return shipmesl The work was controlled using AG Crosbys National Board approved NRJVR program. QC-110 Siçplemeil 4.

12. Remarks None

~ CERTIFICATE OF COMPLIANCE I, ~ /~/ j~j) i~iT2~J~ certify that to the best of my knowledge and belief the statements made in this report are correct anal the repair, modification or replacement activities described above conform to Section XI of the ASME Code anal the i~jaglonaJBQ~Minspection Code NR rules. - . -

National Board Certificate of Authorization No. NR68 to use the NR stamp expires Decenther 11,2009 NR Certificate Holder. ANDERSON GREENWOOD CROSBY

.~-. /1 ~ Z~ (name) ~- ?~-~-

CERTIFICATE OF INSPECTION

( ~-r-& p, t~ P~C ~ifl~1L

~, ,4j ~f/k~~ bokling a valid commission issued by The National Board of Boiler and Pressure sej Inspectors and certificate of competency issued by the jurisdiction of Massacheseus and employed by HSB Cr

- of Hartford, CT have inspected the repair, modification or replacement described in this report on çI~4~..i 7 anal state that to the best ofmy knowledge and belief, this repair, modification or replacement activity has been completed in accordance with Section XI of the ASME Code anal the National Board Inspection NR rules.

By signing this certificate, neither the undersigned nor my employer makes any warranty, expressed or implied, concerning the workdescribed in this report. Furthermore, neither the undersigned. nor my employer shall be liable in any manner for any personal injury, property damage or a loss of~py,)dn4~isin~gftom or connected with this inspection.

Date __________ Signed ~ f/I~fri Commissions ~ rz (~t4p1 M~//~

- .- (lnspçtor) (National Board and jurisdiction no.)

.~, ~ .~ ~ ~-C~ ~78~3(j~~.A) ~4~

133729

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 05/3/07 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 Purchase Order No. 00421825 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Anderson Greenwood Type Code Symbol Stamp NR Crosby Name Authorization No. NR-68 43 Kendrick St., Wrentham, MA 02093 Expiration Date 12/11/09 Address

4. Identification of System Spare Valve (Essential Service Water-SX)

5. (a) Applicable Construction Code ASME Section III 1974 Edition, S76 Addenda, None Code Case (b) Applicable Edition of Section Xi 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 Anderson N04-2348-OO1 Valve Body Greenw~ N/A S/N A-3485 1978 Corrected Yes 28712-3

7. Description of Work Machine and Weld Valve Body Faces to Within Drawina Tolerances

8. Test Conducted: Hydrostatic ~ Pneumatic ~ Nominal Operating Pressure EJ Exempt 0 Other 0 Pressure 425 psi Test Temp. Ambient 2F 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. 00421825 Applicable Manufacturers Data Reports to be attached Re-Work from Purchase Order 00417714 Rev. 4.

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~iorlzationNo. Not Applicable -

Signed (~s~ Si~z~-._~ ~ Date ________ .20 07 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 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 /U ~i~2c4 -

Inspectors Signature National Board, State Province, and Endorsements Date: .20 07 (Final)

- QC-435,Rev.B

- Sheetlof2

- FORM NR-1 REPORT OF REPAIR[~], MODIHCATION[], OR INSTAUATION OF REPL&CEMENT[J TO NUCLEAR COMPONENTS AND SYSTEMS IN NUCLEAR POWER PLANTS

1. wo&perfornied by ANDERSON GREENWOOD CROSBY 00421825 REV. 001 (nams of HR certificate bolder) (P0 NO., Job No., etc.)

43 KENDRJCK ST., WRENTHAM~MA02093 -

2. Owi~r EX~ONGENERATION

)

4450 NORTH GERMAN CHURCH ROAD

3. Name, address and idesilfication of nuclear power plait BYRON STATION NUCLEAR POWER PLANT 4450 NORTH GERMAN CHURCH ROAD

4. System COOLING WATER -

5*. Items Which Required Repair, Modification, or Replacement Activities Ideitification Construction Code Activity Mfg. Name Repsfr/ -

Type of Mfg. Serial Natl Ed. Juris. Year Sectionl Editioril Code Code Modf No Item Name No. No. No. Other Built Division Addenda Case(s) Class Replace r CL Vahe *0 ~3485 N/A N/A N/A 1978 .SME suc ill is~ø51975 N/A 3 anp*~

2 ,

3 4

5 6 -

7 .

8 9

10 Ii -

12 - -

Sb. Items Instafled During Replacement Activities ldentiflcaiion Construction Code Installedor - - Name/ -

Type of Replaced Mfg. Mfg. Natl Bd. Jurls. lear Sectionl Edition( Code Code Item 5* kern No. Name Serial No. No. No. Other Th_~Division Addenda Case(s) Class

6. ASME Code Section XI appplicable for inservice inspection:

7. ASME Code Section XI used for repairs, modification, or replacements: 2001 - 2003 -

8. Construction Code used ~r repairs, inodificatiorn, or replacmeils 1974 S1976 _____________

9. Design responsibilities ANDERSON GREENWOOD - -

10. Tests conducted [~Jhydrostatic flimewnatic [Jdesign pressure []pressure 425 psig - Code Case(s) ____

11~sform rmy be obutoed from The Nitieni Board o(BoBn amif Pr~um~Vcssel taspeciors, 1055 Cflciier Ave., Cohmthes,OH 43229

QC~435,Rev. B Slieet2of2 -

11. Description ofwork - - -

(use of properly identified additional sheet(s)or sketch(es) is iccepmble)

12. Remarks REFERENCE NR-1 FORM FOR P.O. 00417714 REV. 004 CERTIFICATE OF COMPLIANCE I, ~ ~i~i~-rn-i~. certify that to the best of my knowledge and beliefthe etatesnents made in this report are correct six! the repair, modification or replacement activities described above conform So Section Xl of the ASME Code and

- the Nntional Boardhrspectkss Code NR rules. - - -

National Board Certificate ofAtdhorizaliosa No. NR-68 to use the NR stamp expIres December 11. 2009

- NR Certificate Holder ANDERSON GREENWOOD CROSBY -

(name) -

Date ?-.t$A..f-07 Signed s ~ ~7i~~ __________________

~ - . -. . . .-. - -.~.. .~ ~ ~e -.

- CERTIFICATE OF INSPBC1ION I. - /9~IL,... holding a valid ccanmissiosi issued by The National Board of Boiler and Pressure yes-sal Inspectors hnd certificate o(competeacy issued by dmjurisdiction of Mamadnssetts and employed by

- 1158-cr of llartkrd,CF have inspected the repair, modification or replaceniesl described in this report cm 5 ~~o7 - and state that to the best of my knowledge and belicf~,this repair, modification or replacemesl activity has been completed in accordance with Section XI of the ASME Code and the Mrtk~viaiBoard bsspedioit ~NR1rules. -

By signing this certificate, neither the undersigned nor my employer makes any warranty, expressed or implied, concerning the work described in this report. Furthermore, neitherdic undersigned nor my employer shall be liable in any maimer for any personal injury, property damage or a 1oss1q~any kind arising from or cosmected with this inspection.

Date //4c~f~ ~ o~) Signed Vfrf/t-9~ ...- Conunissions /~ ~/J 3 fln (National ~oardandjurisdiction no)

DOCUMENT NO.: 3.3 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 4/17/07 Name 4300 Wlnfield Road, Warrenville, IL Sheet 1 of 3 Address

2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, IL Work Order No. 00850352-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Shaw/Stone & Webster 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 PRIMARY CONTAINMENT VENTILATION (VP)

5. (a) Applicable Construction Code ASME Section III 1974 Edition, S76 Addenda, 1695-1 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 Serial No. No. Identification Built Channel Head Designation CARRIER 7865418-1 138735 2VPO1AD 1978 Removed YES SX-IRH-1 Channel Head -

Designation AEROFIN 070251 2176 2VPO1AD 2007 Installed YES SX-RH-1 Channel Head -

Designation CARRIER 7865420-1 138739 2VPO1AD 1978 Removed YES SX-RH-2 Channel Head -

Designation AEROFIN 070250 2175 2VPO1AD 2007 Installed YES SX-RH-2 Channel Head -

Designation CARRIER 7865420-2 138740 2VPO1AD 1978 Removed YES SX-RH-3 Channel Head -

Designation AEROFIN 070249 2174 2VPO1AD 2007 Installed YES SX-RH-3

7. Description of Work REPLACE RCFC CHANNEL HEADS WITH STAINLESS STEEL HEADS PER EC 343537. HEADS ARE ALSO UPGRADED FROM ASME CLASS 3 TO ASME CLASS 2.

8. Test Conducted: Hydrostatic LI Pneumatic LI Nominal Operating Pressure ~ Exempt D Other 0 Pressure 90 psi Test Temp. 64 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# 00850352-01 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 L 5~

~ }Kjr 9~2.... C~ir,,rJ Date _________ , 20 ~7

~~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 insp~ctedthe components described in this Owners Report during the period 4/3~A~7 to 4~/~27 , and state that to the best of my knowledge and belief, the owner has perform~dexaminations 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 iL Inspectors Signature National Board, State Province, and Endorsements Date: Q~it~e...- /~ ,20 e9 7

FORM NIS-2 SUPPLEMENTAL SHEET

1. Owner Exelon Nuclear Date 4/17/07 Name 4300 Winfleld Road, Warrenville, IL Sheet 2

_______________ of 3 Address

2. Plant Byron Nuclear Power Station Unit . 02 Name 4450 N. German Church Road, Byron, IL Work Order No. 00850352-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by ______________________

Shaw/Stone & Webster 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 PRIMARY CONTAINMENT VENTILATION (VP)

5. (a) Applicable Construction Code ASME Section III 1974 Edition, S76 Addenda, 1695-1 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 Channel Head -

Designation CARRIER 7865419-2 138738 2VPO1AD 1978 Removed YES SX-RH-4 Channel Head -

Designation AEROFIN 070248 2173 2VPO1AD 2007 Installed YES SX-RH-4 Channel Head -

Designation CARRIER 7865416-1 138731 2VPO1AD 1978 Removed YES SX-RH-5 Channel Head -

Designation - AEROFIN 070247 2172 2VPO1AD 2007 Installed YES SX-RH-5 Channel Head -

Designation CARRIER 7865419-1 138737 2VPO1AD 1978 Removed YES SX-LH-1 Channel Head -

Designation AEROFIN 070246 2171 2VPO1AD 2007 Installed YES SX-LH-1 Channel Head -

Designation CARRIER 7865417-2 138734 2VPO1AD 1978 Removed YES SX-LH-2 Channel Head -

Designation AEROFIN 070245 2170 2VPO1AD 2007 Installed YES SX-LH-2 Channel Head -

Designation CARRIER 7865418-2 138736 2VPO1AD 1978 Removed YES SX-LH-3 Channel Head -

Designation AEROFIN 070244 2169 2VPO1AD 2007 Installed YES SX-LH-3

FORM NIS-2 SUPPLEMENTAL SHEET

1. Owner Exelon Nuclear Date 4/17/07 Name 4300 Winfield Road, Warrenville, IL Sheet 3 of 3 Address

2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, IL Work Order No. 00850352-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Shaw/Stone & Webster 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 PRIMARY CONTAINMENT VENTILATION (VP)

5. (a) Applicable Construction Code ASME Section Ill 1974 Edition, S76 Addenda, 1695-1 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 Channel Head -

Designation CARRIER 7865417-1 138733 2VPO1AD 1978 Removed YES SX-LH-4 Channel Head -

Designation AEROFIN 070243 2168 2VPO1AD 2007 Installed YES SX-LH-4 Channel Head - -

Designation CARRIER 7865416-2 138732 2VPO1AD 1978 Removed YES SX-LH-5 Channel Head -

Designation AEROFIN 070242 2167 2VPO1AD 2007 Installed YES SX-LH-5 (Final)

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 Xl

1. Owner Exelon Nuclear Date 4/17/07 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of 1 Address

2. Plant Byron Nuclear Power Station Unit 02 Name 4450 N. German Church Road, Byron, IL Work Order No. 00850352-01/19 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Shaw/Stone & Webster 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 PRIMARY CONTAINMENT VENTILATION (VP)

5. (a) Applicable Construction Code ASME Section III 1974 Edition, S76 Addenda, 1695-1 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 National Corrected, Code Name of Name of Manufacturer Board Other Year Removed, or Stamped Component Manufacturer Serial No. No. Identification Built Installed (Yes or No) 1/2,sA449(;2ea.) CARRIER 786541 6-2 138732 1978 Removed NO Screw, Hex, 1/2 1/2, SA193/B7 x4 Nova Machine HT#US Y 06420 N/A 2VPO1AD SX-LH-5 2004 Installed rouucs 5 NO (l2ea.) u9 CID#46596-1

7. Description of Work Replace RCFC Head Bolting on Head SX-LH-5 Bolt Numbers: 2,8, 11, 14,19,22,23,32,33,46,51 and 57 were replaced.

8. Test Conducted: Hydrostatic LI Pneumatic LI Nominal Operating Pressure ~ Exempt LI Other LI Pressure 90 psi Test Temp. 64 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# 00850352-01 Applicable Manufacturers Data Repórfif b~ttá~h~d 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 Aut~orizationNo. Not Applicable Signed ~ 5~ 1,~JT flj,,. ~ Date ~.7ii ,20 p~7 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 Haytford, CT have in~pe~ied the components described in this Owners Report during the period

______________ to 4..~7~3/~77 and state that to the best of my knowledge and belief, tIle Owner has pert ormedex~rninationsand 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 damâ e or a loss of any kind arising from or connected with this inspection.

Inspectors Signature Commissions il. ~251 National Board, State Province, and Endorsements Date: /~9 .20 ~:77 (Final)

BYRON STATION UNIT 2 REFUELING OUTAGE 13 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 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 HOl AC-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 2tid 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 15t IWL 5-yr containment concrete surfaces examination Section 6.0.1 Page 1 of 5

BYRON STATION UNIT 2 REFUELING OUTAGE 13 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 (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 3~d5-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 3~d5-yr surveillance.

Conclusion:

The active corrosion on tendon grease cans HO1EF-F (Unit-2) and HO1AC-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 lSl 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 XI, Subsection IWL, Paragraph IWL-3310

2) WO#713045-01 (Unit-i)

3) WO #713046-01 (Unit-2)

4) WO #99238605-Ui (Unit-2)

Section 6.0.1 Page 2 of 5

BYRON STATION UNIT 2 REFUELING OUTAGE 13 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 #99238606-01 (Unit-i)

6) WO #943328-01 (Unit-i)

7) WO #943330-Oi (Unit-2)

8) Inland Ryerson drawing No. 170W18R (Attachment 2).

9) ER-AA-330-006 procedure (Rev.03)

Answers to applicable DAR questions:

Question 4.1.4.1:

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 4.1 .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: 10/31/06 ANII Representative Section 6.0.1 Page 3 of 5

BYRON STATION UNIT 2 REFUELING OUTAGE 13 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-335-01 8 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 6.0.1 Page 4 of 5

BYRON STATION UNIT 2 REFUELING OUTAGE 13 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 2:

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A~1C~ x .128.ii5 WALl.

SH~T BUflWELOEa 170 WIRE GREASE (IAN

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Section 6.0.1 Page 5 of 5

BYRON STATION UNIT 2 REFUELING OUTAGE 13 INSERVICE INSPECTION REPORT CONDITIONS FOUND DURING THE INSPECTION OF PENETRATION 2PC064M Reason for Evaluation/Scope: -

The visual inspection (VT-3) of the U-2 spare penetration #64 bolting per the requirements of IWE subsection and Byron CISI program identified 2 of the 16 bolting as having damaged threads (Recordable Indication) thus not meeting the Acceptance Standards (Recordable Indications did not meet Acceptance Criteria established prior to the inspection).

Byron station is using the 200i Edition of ASME Code Section XI, Subsection IWE with 2003 Addenda.

This condition is documented in IR #61167 thus meeting section 4.10.1 of ER-AA-330-007, Rev.

5.

An Engineering Evaluation per Section 4.iO.2 of ER-AA-330-007 is not required as the defective studs are replaced.

No supplemental examination per Section 4.10.3 of ER-AA-330-007 is required other than the new studs being inspected prior to installation since no Engineering Evaluation is required.

No additional examinations per Section 4.10.4 of ER-AA-330-007, Rev. 5 are required as the examination was conducted to the later than 1998 Edition of the ASME Code, Section Xl. The only other required examination is the re-inspection of the new studs prior to installation.

Since the defective studs are replaced, no re-examination is required in the next refueling outage (Examination Cat E-C is not applicable). However, if this connection is scheduled for disassembly during B2R14, it will then be inspected. This meets the intent of the requirements of Section 4.10.5 of ER-AA-330-007.

The conditions discovered with this connection do not indicate the presence of similar condition in other connections that are not disassembled (considered inaccessible areas) during this outage. Penetration #74 was also disassembled and the examination results met the Acceptance Standards. Therefore, the Evaluation as required per 10CFR5O.55a (and hence, Section 4.11 of ER-AA-330-007) is not applicable.

==

Conclusion:==

Per Section 4.12 of ER-AA-330-007, the following information is provided to be included in the ISI Summary Report:

1) A few threads on the shank of two studs out of 16 on spare Penetration #64 were noted per VT-3 visual examination method to be damaged (prevented rotation through nuts) when the connection was disassembled. This condition did not meet the acceptance Criteria (no damaged threads) established by the Owner prior to the examination. The degradation is attributed to the mishandling of the studs during the disassembly phase.

2) No evaluation was required of the inaccessible areas (remaining assembled connections) as a similar disassembled connection (Penetration #74) did not exhibit any signs of degradation.

3) The studs were replaced like-for-like prior to the start of the Unit-2 operation.

Section 6.0.2 Page 1 of 2

BYRON STATION UNIT 2 REFUELING OUTAGE 13 INSERvICE INSPECTION REPORT CONDITIONS FOUND DURING THE INSPECTION OF PENETRATION 2PC064M The pressure testing requirements of IWE-5000 (specifically, IWE-5221, leakage test) are met when this connection was local leak rate tested at the end of B2R13 per 2BOSR 6.1.1-25.

References:

1) 2001 Edition with the 2003 Addenda of ASME Section Xl, Subsection IWL and IWE

2) Exelon procedure ER-AA-330-007 Revision 5, Visual Examination ofSection Xl Class MC Surfaces and Class CC Liners

3) Byron procedure 2BOSR 6.1.1-25 Revision 6, Unit Two Primary Containment Type B Local Leakage Rate Test of Spare Containment Penetrations SectIon 6.0.2 Page 2 012