ML13008A073

Inservice Inspection Summary Report, Form NIS-2 Owner'S Report for Repair/Replacement Activity, as Required by the Provisions of the ASME Code Section XI

ML13008A073
Person / Time
Site:	Byron
Issue date:	01/03/2013
From:	Exelon Generation Co, Exelon Nuclear
To:	Office of Nuclear Reactor Regulation
References
Byron 2013-0005
Download: ML13008A073 (45)

Text

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

1. er Own Exelon Nuclear Date 9-21-12 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. 01478855-17 Repair Organization, P.O. No., Job No., etc.

Address

3. Work Performed by PCI Energy Services Type Code Symbol Stamp Not Applicable Name Authorization No. Not Applicable One Energy Drive, Lake Bluff, IL Expiration Date Not Applicable Address

4. Identification of System RC - REACTOR COOLANT (a) Applicable Construction Code ASME Section III 19 71 Edition, S/73 Addenda, N/A Code Case 5.

(b) Applicable Edition of Section X1 Used for Repair/Repla cement Activity: 2001 Edition/2003 Addenda (c)Section XI Code Case(s) N/A

6. Identification of Components ASME Corrected, Code National Removed, or Stamped ame of anufacturer Board ther ear Installed (Yes or No) ame of Component Manufacturer Serial No. No. Identification Built RX Hd Pen. 31 BABCOCK & 640-0004-51 & 52 N198 1976 Corrected YES CRDM WILCOX 1 RC01 R RX Hd Pen. 43 BABCOCK & N198 1 RC01 R 1976 Corrected YES 640-0004-51 & 52 CRDM WILCOX

7. Description of Work Remove indications on U-1 RX Head CRDM Penetrations 31 & 43.

8. Test Conducted: Hydrostatic q Pneumatic q Nominal Operating Pressure Exempt q Other q Pressure 2232 psi Test Temp. 557 OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8'/2 in. x 11 in., (2) information in items 1 through 6 on this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO# 01478855-17 Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Signed r _ .- - Date /Z --f3 , 20 12 Ow '?tec,or Owner's Designee, Title CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have ins ected the components described in this Owner's Report during the period

-ice v : _._,,,. to and state that to the best of my knowledge and belief, the Owner has perf ormed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code,Section XI.

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

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

r^*. ^ Commissions if^7/

Inspector's Signature Nat'Iona 1 8 oa d r , Ct D.

tae rovInce, an d Endorsements Date: G'ir'l ^'/` f i , 20 12

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

1. Owner Exelon Nuclear Date 9-20-12 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. 1482783-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address

4. Identification of System CV - Chem. & Volume Control (a) Applicable Construction Code ASME Section Ill 19 71 Edition, S/72 Addenda, 1649 Code Case 5.

(b) Applicable Edition of Section XI Used for Repair /Replacemen t Activity: 2001 Edition/2003 Addenda (c)Section XI Code Case(s) N/A

6. Identification of Components ASME Corrected, Code National Removed, or Stamped ame of ame of anufacturer Board ther ear Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built VALVE: EPN:1CV8389B PLUG VLV.S/N:7310- 1976 Removed Yes COPES- SN:2959A 645 Plug VULCAN 95283-261-4 TR# 1121-1322261- EPN:1CV8389B SPX CORP./ N/A 2011 Installed Yes 2-1 (11-01) CAT. ID:35955-1 Plug Cope-Vulcan HT#421388

7. Description of Work REPLACED TRIM SET (PLUG).

8. Test Conducted: Hydrostatic q Pneumatic q Nominal Operating Pressure q Exempt IN Other q Pressure psi Test Temp. OF 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:1482783-01 App Ica a anu ac urer s Data Heports to e attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Signed Date /2 --1 S , 20 12 0 er 0) Owner's Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Ha ford, CT have i p ted the components described in this Owner's Report during the period to and state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code,Section XI.

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

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

Commissions .lf, f^' /L/,*S.>`4 %;* "f Inspector's Signature National Board, State Province, and Endorsements Date: _ /if 20 12 (Final)

4A REV. NO.: 0 DOCUMENT NO.:

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

1. Owner Exelon Nuclear Date 3/14/12 Name Road, Warrenv ille, IL Sheet 1 of 4300 Winfield Address

2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 01521024-08 Address Repair Organization, P.O. No., Job No., etc.

Byron Mechanical Type Code Symbol Stamp Not Applicable

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

4. Identification of System REACTOR COOLANT (RC)

Addenda, N/A Code Case

5. (a) Applicable Construction Code ASME Sect. III - Piping 19 74 Edition, S75 Edition, 87 Addenda , N/A Code Case

5. (a) Applicable Construction Code ASME Sect. III - Valve 19 86 Activity: 2001 Edition/2 003 Addenda (b) Applicable Edition of Section XI Used for Repair/Replacement (c)Section XI Code Case(s) N/A

6. Identifica tion of Compone nts ASME Corrected, Code National Removed, or Stamped Board Other Year Installed (Yes or No)

Name of Name of Manufacturer Manufacturer Serial No. No. Identification Built Component VALVE DF4-7 N/A EPN #IRC8042B 1974 REMOVED YES KEROTEST GLOBE VALVE ANCHOR S/N 12BTQ ETN I RC8042B 2012 INSTALLED YES N/A Cat id# 36308-1 GLOBE DARLING PIPE S.S. SANDVIK N/A EPN #1RC22AS 1977 REMOVED NO HT# 462294 SCH. 160 PIPE S.S. Consolidated HT#A3614H Cat id#41105-1 1998 INSTALLED NO N/A EPN I RC22AB SCH. 160 Power Su pp ly COUPLING Alloy Stainless HT# BVL14K N/A EPN #IRC22AB 1998 REMOVED NO 6000 LBS. Product Co.

COUPLING Consolidated HT# HDU N/A EPN #IRC22AB 1998 INSTALLED. Ar NO 6000 LBS. Power Su ppl y Cat id# 39134-1

7. Description of Work REPLACE KEROTEST VALVE WITH NEW ANCHOR DARING VALVE PER EC #388202 REPLACE PIPE SECTION AND INSTALL COUPLING Test Conducted: Hydrostatic q Pneumatic q Nominal Operating Pressure 54 Exempt q 8.

Other q Pressure 2236 psi Test Temp. 557 °F size is 8r in. x 11 in., (2)

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

FORM NIS-2 (Back)

9. Remarks WO# 01521024.08 Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correc t and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No.

Not Applicable Signed ,.,,._ ( G. / i ^ v r ti Date

, . \ /Z ,20 12 Owner or Owner's Designee, Title 401- f 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 i *pected the components described in this Owner's Report during the period 3rd to , and state that to the best of my knowledge and belief, the Owner has performe examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his emplo yer makes any warranty, expressed or implied, concerning the examinations and corrective measu res described in this Owner's Report.

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

Commissions Inspectors Signature National Board, State Province, and Endorsements Date: ^^^ /; , 20 12

DOCUMENT NO.: 3A REV. NO.: 0 FORM NIS-2 OWNER'S REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 10/10/12 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of Address

2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 1535951-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address

4. Identification of System MS - MAIN STEAM

5. (a) Applicable Construction Code ASME Section III 19 74 Edition, S/74 Addenda, 1682-1 Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity: 2001 Edition/2003 Addenda (c)Section XI Code Case(s) N/A

6. Identification of Components ASME Corrected, Code National Removed, Stamped ame of ame of anufacturer Board ther ear or Installed (Yes or No)

Com ponent Manufacturer Serial No. No. Identification Built Valve W-K-M VALVE S/N: Plug Ht#73305 1462 1978 Removed No Trim Set Valve 70-117591 1 MS018A Valve FLOWSERVE (DS/N: L9366-1-1 thru (-5) Cat id# 1449830-1 Trim Set CORPORATION or L9366-2-1 thru (-5) N/A 2011 Installed No UTC 0002904650

7. Description of Work REPLACE VALVE TRIM SET PER EC :380012

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

FORM NIS-2 (Back)

9. Remarks WO: 1535951-01 Applicabl e Manuf ac t urer's D a t a H e ports to b e a ac e IR# 1454123 written to address serial number range CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not App licable Signed Date -Z ;Ld er's Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Harvard, CT havepspepted the components described in this Owner's Report during the period

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

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

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

Commissions Inspector's Signature National Board, State Province, and Endorsements Date: L '+c^!3/ &N JD , 20 12 (Final

DOCUMENT NO.: 3A REV. NO.: 0 FORM NIS-2 OWNER'S REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 10/10/12 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. 1535952-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address

4. Identification of System MS - MAIN STEAM

5. (a) Applicable Construction Code ASME Section III 19 74 Edition, S/74 Addenda, 1682-1 Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity: 2001 Edition/2003 Addenda (c)Section XI Code Case(s) N/A

6. Identification of Components ASME Corrected, Code National Removed, or Stamped ame of ame of anufacturer Board ther ear Installed (Yes or No)

Com ponent Manufacturer Serial No. No. Identification Built Valve W-K-M VALVE SIN: Plug Ht#73305 Trim Set Valve 70-117593 1463 1978 Removed No 1 MSO18B Valve Flowserve TS/N: L9366 1 thru (-5) Cat id# 1449830-1, Trim Set Corp. N/A UTC 0002904650 or L9366-2-1 thru (-5) 2011 Installed No

7. Description of Work REPLACE VALVE TRIM SET PER EC:380012

8. Test Conducted: Hydrostatic q Pneumatic q Nominal Operating Pressure q Exempt Other q Pressure psi Test Temp. OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8'h 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: 1535952-01 Applicabl e M anu facturer s D a t a H e port s to be a ac e 0 IR# 1454123 written to address serial number range CERTIFICATE OF COMPLIANCE of the ASME I certify that the statements made in the report are correct and this conforms to the requirements Code,Section XI.

Type Code Symbol Stamp Certificate of Authorizatio Signed CERTIFICATE OF INSERVICE INSPECTION and Pressure I, the undersigned, holding a valid commission issued by the National Board of Boiler Illinois and employed by HSB CT Vessel Inspectors and the State or Province of during the period of Hartford, CT have inspected the components described in this Owner's Report

_ to ^t ___ and state that to the best of my knowledge and belief, 1e caner has performed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section Xi.

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

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

Commissions 4 K ,4t/I; G, Inspector's Signature National Board, State Province, and Endorsements Date: 0,q1e&Jee4 W , 20 12 (Final

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

1. Owner Exelon Nuclear Date 9/20/12 Name 4300 Winfield Road, Warrenville, IL Sheet of 1 Address

2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 01535952-11 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address

4. Identification of System MS - MAIN STEAM

5. (a) Applicable Construction Code ASME Section 111 19 74 Edition, S/74 Addenda, 1682-1 Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity: 2001 Edition/2003 Addenda (c)Section XI Code Case(s) N/A

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

Component Manufacturer Serial No. No. Identification Built Valve W-K-M VALVE S/N: 1978 Corrected Yes 1463 bonnet Valve 70-117592 ETN: 1 MS018B

7. Description of Work MACHINED VALVE BONNET

8. Test Conducted: Hydrostatic q Pneumatic q Nominal Operating Pressure q Exempt Other q Pressure psi Test Temp. OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8'h 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: 01535952-11 Applicable Manufacture r s Data Hepo rts to e a ac e 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 X1.

Type Code Symbol Stamp Not Applicable Certificate Authorization No. Not Applicable Signed i .;,o (.. A; t , gig 60WM-M/{,_ Date AL r , 20 12 Owner or Owner's Designee, Title CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of y iiaartford, i CT have i spe ed the components described in this Owner's Report during the period to and state that to the best of my knowledge and belief, e Owner has perform d examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code,Section XI.

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

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

Commissions lz/It T'l /f /.1, G,,

Inspector's Signature National Board, State Province, and Endorsements Date:  ! G'ci 16--,r 20 12 (Final

DOCUMENT NO.: 3A REV. NO.: 0 FORM NIS-2 OWNER'S REPORT FOR REPAIRJREPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI

1. Owner Exelon Nuclear Date 10/10/12 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. 1535953-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address

4. Identification of System MS - MAIN STEAM

5. (a) Applicable Construction Code ASME Section III 19 74 Edition, S/74 Addenda, 1682-1 Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity: 2001 Edition/2003 Addenda (c)Section XI Code Case(s) N/A

6. Identification of Components ASME Corrected, Code National Removed, or Stamped ame of ame of anufacturer Board ther ear Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built Valve W-K-M VALVE S/N: Plug Ht#73305 Trim Set Valve 1464 1978 Removed No 70-117594 1 MS018C Valve Flowserve (l Cat id# 1449830-1,

@S/N: 1-1 5)

Trim Set Corp.

N/A UTC 0002904650 2011 Installed No or L9366-2-1 1 thru (-5)5)(

7. Description of Work REPLACE VALVE TRIM SET PER EC:380012.

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

FORM NIS-2 (Back)

9. Remarks WO: 1535953-01 Applicable Manufacturer's a a Reports to be a ac e IR# 1454123 written to address serial number range CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Date /C. -" , 20 12 Signed Owrfer of Owner' s Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of , Hartford, CT have jnspgcted the components described in this Owner's Report during the period L;_ , and state that to the best of my knowledge and belief, ner has performed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section X1.

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

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

Commissions Inspector's Signature National Board, State Province, and Endorsements 1

Date: DcXV, f( &1' O , 20 12 (Final

REV. NO.: 0 DOCUMENT NO.: 4A T ACTIVITY FORM NIS-2 OWNER'S REPORT FOR REPAIR/REPLACEMEN As Required by the Provisions of the ASME Code Section XI Exelon Nuclear Date 09/25/12

1. Owner Name Sheet 1 of 1 4300 Winfield Road, Warrenville, IL Address Byron Nuclear Power Station Unit 01

2. Plant Name Work Order No. 01535953-11 4450 N. German Church Road, Byron, IL Address Repair Organization, P.O. No., Job No., etc.

Type Code Symbol Stamp Not Applicable

3. Work Performed by Byron Mechanical Maintenance Name Authorization No. Not Applicable h Road, Byron, IL Expiration Date Not Applicable 4450 N. German Churc Address

4. Identification of System MS - MAIN STEAM Code Case

5. (a) Applicable Construction Code ASME Section 111 19 74 Edition, S/74 Addenda, 1682-1 t Activity: 2001 Editio n/200 3 Adden da (b) Applicable Edition of Section XI Used for Repair/Replacemen (c)Section XI Code Case(s) N/A

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

Name of Manufacturer Board Name of Identification Built Manufacturer Serial No. No.

Component Valve W-K-M VALVE S/N: 1464 1978 Corrected Yes Valve 70-117593 ETN: 1 MS018C bonnet

7. Description of Work MACHINE VALVE BONNET Hydrostatic q Pneumatic q Nominal Operating Pressure q Exempt

8. Test Conducted:

psi Test Temp. ' OF Other q Pressure gs may be used, provided (1) size is 8' in. x 11 Note: Supplemental sheets in form of lists, sketches, or drawin d on each sheet, and (3) each sheet is numbered in., (2) information in items 1 through 6 on this report is include and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO: 01535953-11 A pp l icable Manufacture r s a a Hepo rts to be a ac e 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 X1.

Type Code Symbol Stamp Not Applicable Certificate uthorization No. Not Applicable Signed M'%1

• n^^ Co0/^ d 1 &4TbfL Date (Z - , 20 12 Owner or Owner' s Designee, Title CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have i sp ted the components described in this Owner's Report during the period to at 1? , and state that to the best of my knowledge and belief, he Owner has performed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code,Section XI.

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

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

Commissions Y ^/S/z el Inspector's Signature National Board, State Province, and Endorsements Date: 4044144e if , 20 12 (Final

DOCUMENT NO.: 3A REV. NO.: 0 FORM NIS-2 OWNER'S REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI 1 Owner Exelon Nuclear Date 10/10/12 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. 1535954-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address

4. Identification of System MS - MAIN STEAM

5. (a) Applicable Construction Code ASME Section 111 19 74 Edition, S/74 Addenda, 1682-1 Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity: 2001 Editlon/2003 Addenda (c)Section XI Code Case(s) N/A

6. Identification of Components ASME Corrected, Code National Removed, or Stamped ame of ame of anufacturer Board ther ear Installed (Yes or No)

Component Manufacturer Serial No. No. Identification Built Valve W-K-M VALVE S/N: Plug Ht#73305 1465 1978 Removed No Trim Set Valve 70-117594 1 MS018D Valve Fiowserve S/N: L9366-1-2 Cat id# 1449830-1 N/A 2011 Installed No Trim Set Corp. UTC 0002904650

7. Description of Work REPLACE VALVE TRIM SET PER EC:380012.

Test Conducted: Hydrostatic q Pneumatic q Nominal Operating Pressure q Exempt Other q Pressure psi Test Temp. OF 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: 1535954-01 Appl icable manufacture rs Data H epo rts to be a ac e 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 o uthorization No. Not Applicable Signed G . AA MA T/Ro1\IA)A j"L !- Date I,L - 7 , 20 12 Owner or Owner's Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Har ord, CT have inspe ed the components described in this Owner's Report during the period

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

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

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

Commissions A-11-4 f4' A('/t G Inspector's Signature National Board, State Province, and Endorsements Date: /t ,2012 (Final

DOCUMENT NO.: 7A REV. NO.: 0 FORM NIS-2 OWNER'S REPORT FOR REPAIRJREPLACEi4IENT ACTIVITY As Required by the Provisions of the ASME Code Section XI I. Owner Exelon Nuclear Date 10-5-12 Name 4300 Winfield Road, Warrenville, IL Sheet _ of I Address

2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 01549925-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Byron Mechanical Type Code Symbol Stamp Not Applicable Maintenance Name Authorization No. Not Applicable 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address

4. Identification of System REACTOR COOLANT (RC)

5. (a) Applicable Construction Code ASME Sect. III - Piping 19 74 Edition, S75 Addenda, N/A Code Case

5. (a) Applicable Construction Code ASME Sect. III - Valve 19 71 Edition, W72 Addenda, N/A Code Case (b) Applicable Edition of Section XI Used for Repair /Replacement Activity: 2001 Edition/2003 Addenda (c)Section XI Code Case(s) N/A

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

Component Manufacturer Serial No. No. Identification Built VALVE KEROTEST 13174-8 N/A ETN #IRC8042C 1974 REMOVED YES GLOBE VALVE FLOWSERVE ETN IRC8042C S/N 95BUJ N/A 2012 INSTALLED YES GLOBE CORP Cat id# 36308-1 PIPE S.S.

SANDVIK HT# 462294 N/A ETN #IRC22AC 1977 REMOVED NO SCH. 160 PIPE S . S . Consolidated N/A Cat id#41105-1 HT#510310 2009 INSTALLED NO SCH. 160 Power Supply ETN IRC22AC

7. Description of Work INSTALLED NEW ANCHOR DARING VALVE PER EC #389152 AND REPLACED PIPE

8. Test Conducted: Hydrostatic q Pneumatic q Nominal Operating Pressure Exempt q Other q Pressure 2240 psi Test Temp. 558 OF Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8'h in. x I 1 in., (2) information in items 1 through 6 on this report is includedon each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO# 01549925-01 Applicable Manufacturer's Data Reports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this confor ms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Authorizatioj No Not Applicable Signed Date /Z "/V ,20 12 CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the Nation al Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of H}rtford, CT have inspected the components described in this Owner's Report during the period to and state that to the best of my knowledge and belief, the Owner has performed xaminations and taken corrective measu res described in this Owner's Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employ er makes any warranty, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report.

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

' Commissions 'Zo 3^ %/^ /x,/, `, /4 Inspector's Signature C.

National Board, State Province, and Endorsements Date: ^GGZL%77C e,' /^ , 20 12

4A REV. NO.: 0 DOCUMENT NO.:

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

1. Owner Exelon Nuclear Date 9-25-12 Name Sheet 1 of 1 4300 Winfield Road, Warrenv ille, IL Address

2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 01571180-01 Address Repair Organization, P.O. No., Job No., etc.

Byron Mechanical Type Code Symbol Stamp Not Applicable

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

4. Identification of System CV - CHEMICAL VOLUME CONTROL ASME Section III 19 71 Edition, S72 Addenda, 1649 Code Case

5. (a) Applicable Construction Code Addend a 2001 Edition/ 2003 (b) Applicable Edition of Section XI Used for Repair/Replacement Activity:

(c)Section XI Code Case(s) NONE

6. Identification of Components ASME Corrected, Code Nation Removed, or Stamped anufacturer al ther ear Installed (Yes or No) ame of ame of Serial No. Board Identification Built Component Manufacturer No.

2933 N/A 1 CV8149B 1976 Removed No Plug Copes Vulcan S/N: 9021 -96589-1 -1 1 CV8149B Plug (90-8) N/A 1991 Installed No Copes Vulcan Cat id# 34152-1 (TRIM SET) HT# 62348

7. Description of Work REPLACED PLUG / TRIM SET.

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

FORM NIS -2 (Back)

9. Remarks WO# 01571180-01 pp ica a anu ac ure s Data Repo rts to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not App licable Signed i'C / Date A? - / , 20 12 Owned or 0 er's Designee, Title CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have i sp cted the components described in this Owner's Report during the period and state that to the best of my knowledge and belief,

^^- to _

the Owner has performed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code,Section XI.

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

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

Commissions /L/, :E5( ', /G Inspector's Signature National Board, State Province, and Endorsements Date: 20 12

3A REV. NO.: 0 DOCUMENT NO.:

FORM NIS-2 OWNER'S REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI Owner Exelon Nuclear Date 10/5/12 1.

Name ille, IL Sheet 1 of 1 4300 Winfield Road, Warrenv Address

2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 01579700-01 Repair Organization, P.O. No., Job No., etc.

Address Byron Mechanical Type Code Symbol Stamp Not Applicable

3. Work Performed by Maintenance m e Authorization No. Not Applicable N a 4450 N. German Church Road, Byron, IL Expiration Date Not Applicable Address

4. Identification of System CHEMICAL FEED AND VOLUME CONTROL

5. (a) Applicable Construction Code ASME Section III 19 71 Edition, Wt72 Addenda, 1649 & Code Case 1501 2001 Edition/ 2003 Addenda (b) Applicable Edition of Section XI Used for Repair/Replacement Activity:

(c)Section XI Code Case(s) NONE

6. Identifica tion of Compone nts ASME Corrected, Code National Removed, or Stamped Board ther ear Installed (Yes or No) ame of ame of anufacturer Serial No. No. Identification Built Component Manufacturer CROSBY / N56901 N/A 1CV8119 REMOVED YES RELIEF VALVE 2010 TYCO 0047 CROSBY/ N56901 N/A SI#1434146 YES RELIEF VALVE 2009 INSTALLED TYCO 0046 UTC# 0002841061

7. Description of Work Replace Relief Valve.

Hydrostatic q Pneumatic q Nominal Operating Pressure Exempt q

8. Test Conducted:

Other q Pressure 184 psi Test Temp. na OF (1) size is 8 'h in. x 11 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided is included on each sheet, and (3) each sheet is numbered in., (2) information in items 1 through 6 on this report and the number of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks WO# 01579700-01 Appl icable manufact urer's Data H eports to e a ac e 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 uthorization No. Not Applicable Signed AAJ CA R CUORA IAJk alp Date 12 - l 20 12 Owner or Owner's Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT ofH r ord, CT have in spec d the components described in this Owner's Report during the period to , and state that to the best of my knowledge and belief, 01 (A the ner has performed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code,Section XI.

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

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

t Commissions Inspector's Signature National Board, State Province, and Endorsements Date: If , 20 12 (Final

FORM NIS-2 OWNER'S REPORT FOR REPAIR/REPLACEMENT ACTIVITY As Required by the Provisions of the ASME Code Section XI 1 Owner Exelon Nuclear Date 08/17/12 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. PO 472531 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by NWS Technologies Type Code Symbol Stamp Not Applicable Name Authorization No. VR - 632 / NR - 81 131 Venture Blvd, Spartanburg, SC 29306 Expiration Date April 3, 2015 / April 9, 2015 Address

4. Identification of System PRESSURIZER (RY)

5. (a) Applicable Construction Code ASME Section III 19 71 Edition, W72 Addenda, None Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity 2001 Edition _/ 2003 Addenda (c)Section XI Code Case(s) NONE

6. Identification of Components ASME Corrected, Code National Removed, or Stamped ame of ame of anufacturer Board ther ear Installed (Yes or No)

Com ponent Manufacturer Serial No. No. Identification Built Relief Valve CROSBY VALVE S/N: N/A Valve s/n 1976 REMOVED No RY8010 Nozzle & GAGE N90555-37-0066 N56964-00-0047 Relief Valve CROSBY VALVE S/N# N90555-55-0123 N/A Cat ID# 24125-1 1986 INSTALLED No RY8010 Nozzle & GAGE HT# 60383 Description

7. of Work Replaced nozzle in RY Safety valve s/n N56964 0047 / CAT ID# 1402762-1

8. Test Conducted: Hydrostatic q Pneumatic q Nominal Operating Pressure q Exempt Other q Pressure psi Test Temp. OF 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 PO 472531 Applicable Manufacturer's Data Reports to be attache CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xi.

Type Code Symbol Stamp Not Applicable Certificate of Authorization Not Applicable Signed A'C C, rd Date ,2012 ne Owner's Designee, Title CERTIFICATE OF INSERVICE INSPECTION i, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Nar#ford, CT have inspected the components described in this Owner's Report during the period

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

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

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

44411119&-- A6 Commissions ,1 1Zl^^^/ 4e^ ^1, 4 Inspectors Signature N at i ona I eo au, tats S P rownce, a nd Endo rsements Date: 20 12 (Final)

FORM NVR-1 REPORT OF REPAIR Ef' REPLACEMENT El' OF NUCLEAR PRESSURE RELIEF DEVICES

1. Work performed by: NWS Technologies, LLC Purchase Order # 472531 131 Venture Boulevard, Spartanburg, SC 29306

2. Work performed for. Exelon Corporation, Byron Nuclear Station 3/4. Owner - name, address and identification of nuclear power plant Exelon Corporation, Byron Nuclear Station 4450 N. German Church Road Byron, IL 61010

5. a: Repaired pressure relief device: Pressurizer Safety Valve b: Name of manufacturer. Crosby Valve & Gage Co.

c: Identifying nos.

HB-86-BP N56964-00-0047 n/a steam 6" 1976 (type) (mfrs S" (NBA) (service) (size) (yr.built) d: Construction Code: ASME / III / 1 1971 W72 n/a 1 (name/section/division) (edition) (addenda) (Code Cases(s)) (Code Class)

6. ASME Code Section XI applicable for inservice inspection: 2001 2003 n/a (edition) (addenda) (Code Case(s))

7. ASME Code Section XI used for repairs, replacements: 2001 2003 n/a (edition) (addenda) (Code Case(s))

8. Construction Code used for repairs, replacements: 1971 W72 n/a (edition) (addenda) (Code Case(s))

9. Design responsibilities: n/a

10. Opening pressure: 2460 psig Set-pressure adjustment made at NWS Technologies, LLC using steam

11. Description of work (include name and identifying number of replacement parts): As-found test. Disassembled, spring test Inspected components, replaced nozzle, cleaned, lapped seats, lubricated, assembled.

Certified set-pressure using steam. Jacked and lapped to restore seat integrity.

Final seat tightness and bellows/gasket integrity verified using gaseous nitrogen.

12. Remarks: NWS Traveler # 11-101. New nozzle S/N: N90555-55-0123 CERTIFICATE OF COMPLIANCE I, Jason C. Gibson certify that to the best of my knowledge and belief the statements made in this report are correct and the repair, modification or replacement of the pressure relief devices described above conforms to Section XI of the ASME Code and the National Board Inspection Code "VR" and "NR" rules.

National Board Certificate of Authorization No. 632 to use the "VR" stamp expires April 3, 2015.

National Board Certificate of Authorization No. 81 to use the ^"NR" stamp expires April 9, 2015.

iL NWS Technologies, LLCC .4-- QA Manager Date Repair Organization Authorized representative Title CERTIFICATE OF INSPECTION I, Elmostafa Elkouri holding a valid commission issued by The National Board of Boiler and Pressure Vessel Inspectors and certificate of competency issued by the jurisdiction of SC and employed by Hartford Steam Boiler of Hartford CT have inspected the repair, modification or replacement described in this report on and state that to the best of my knowledge and belief, this repair, modification or replacement has been completed in accordance with Section XI of the of the ASME Code and the National Board Inspection Code' VR" and "NR" rules.

By signing this certificate, neither the undersigned nor my employer makes any warranty, expressed or implied, concerning this repair, modification or replacement described in this report. Futhermore, neither the undersigned nor my employer shall be liable in any manner for any personal injury, property damage or loss of any kind arising from or connected with this inspection.

NB#13930, A, N, I SC#264 ate Inspectors Signature Commissions (NB (ind endorsements), jurisdiction,& no.)

18 5771

AIR /REPLACEMENT ACTIVITY FORM NIS- 2 OWNER'S REPORT FOR REP Section XI As Required by the Provisions of the ASME Code Date 9-05-12

1. Owner Exelon Nuclear Name 1 Sheet 1 of 4300 Winf ield Road , Warr enville, IL Address Unit 01

2. Plant Byron Nuclear Power Station Name P.O. 00475125 Rev-3 4450 N. German Church Road, Byron, IL Repair Organization, P.O. No., Job No., etc.

Address LLC Type Code Symbol Stamp NR / VR

3. Work Performed by NWS Technologies, 632 / 81 Authorization No.

131 Venture Boulevard 4-3-15 / 4-9-15 Expiration Date Spartanburg, SC 29306 Address

4. Identification of System MAIN STEAM (MS)

None Code Case (a) Applicable Construction Code ASME Section III 19 74 Edition, N/A Addenda,

5. 2003 Adde nda Repair/Replacement Activity 2001 Edition /

(b) Applicable Edition of Section XI Used for (c)Section XI Code Case(s) NONE

6. Identification of Componen ts ASME Corrected, Code Removed, or Stamped National (Yes or No)

Other Year Installed Name of Manufacturer Board Name of No. Identification Built Manufacturer Serial No.

Compo nent MAIN STEAM VALVE VALVE SM: 1977 REMOVED NO DRESSER N/A BR09590 SAFETY RELIEF S/N: ADE60 VALVE -DISK CAT ID*

2011 INSTALLED NO (INCONNEL X-750) DRESSER S/N: AGM17 N/A 1438465-1 DISK UTC# 2894628 VALVE S/N: 1977 REMOVED NO DRESSER S/N: G9776 N/A BR09590 SPINDLE CAT ID#

2011 INSTALLED NO S/N: AGF07 N/A 1449980-1 SPINDLE DRESSER UTC# 2884360 VALVE S/N: 1977 REMOVED NO DRESSER S/N: N/A N/A BR09590 YOKE CAT ID#

2011 INSTALLED NO S/N: AEW93 N/A 1449920-1 YOKE DRESSER UTC# 2894541 VALVE S/N: 1977 REMOVED NO COMPRESSION DRESSER S/N: N/A N/A BR09590 SCREW CAT ID#

1452424-1 2011 INSTALLED NO COMPRESSION DRESSER S/N: AGE06 N/A SCREW UTC# 2887900

& compression screw.

7. Description of Work Refurbished valve / installed new disk, spindle, yoke Hydrostatic q Pneumatic q Nominal Operating Pressure q Exempt

8. Test Conducted:

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

FORM NIS -2 (Back)

9. Remarks P.O. 00475125 Rev-3 Applicable Manufacturees Data Reports to be attached NWS Traveler 11-278 Yoke previously removed for valve BR09596 CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirem ents of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Signed ^:sr-.*"t- e- Date 20 12 Owner ^r Owner's Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owner's Report during the period

- 3 .- k to g- %. ^- Lam- and state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section Xl.

By signing this certificate neither the Inspector nor his employer makes any warrant y, expressed or implied, concerning the examinations and corrective measures described in this Owner's Report.

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

J--- 1,...^.Q. Commissions t-Lc3#8-1 s-.. A"'c :=t-zs %tot3.s Inspector's Signature National Board, State Province, and Endorsements Date: '"- is , 20 12

f FORM NVR-1 REPORT OF REPAIR REPLACEMENT OF NUCLEAR PRESSURE RELIEF DEVICES

1. Work performed by. NWS Technologies, LLC Purchase Order # 475125 131 Venture Boulevard, Spartanburg, SC 29306

2. Work performed for. Exelon Corporation, Byron Nuclear Station 3/4. Owner - name, address and identification of nuclear power plant Exeton Corporation, Nuclear Station 4450 N. German Church Road Byron, IL 61010 1 e -Y

5. a: Repaired pressure relief device: V 'V#

Main Steam Safety Valve b: Name of manufacturer. Consolidated / Dresser c: Identifying nos.

3707R BR09590 n/a steam 6" 77 (type) (mfrs S/M (NBre) (service) (size) (yr.built) d: Construction Code: ASME / III / 1 1974 n/a n/a 2 (name/section/division) (edition) (addenda) (Code Cases(s)) (Code Class)

6. ASME Code Section XI applicable for inservice inspection: 2001 2003 n/a (edition) (addenda) (Code Case(s))

7. ASME Code Section XI used for repairs, replacements: 2001 2003 n/a (edition) (addenda) (Code Case(s))

8. Construction Code used for repairs, replacements: 1974 n/a n/a (edition) (addenda) (Code Case(s))

9. Design responsibilities: n/a

10. Opening pressure: 1235 psig Set-pressure adjustment made at NWS Technologies, LLC using steam

11. Description of work (include name and Identifying number of replacement parts): Disassembled, cleaned, inspected, lapped nozzle & passivated seat area, installed preoxidized disc, load tested spring, implemented EC#339376 extend. wear mod.) and EC#340678 (roll pin mod.), new yoke installed. assembled. Certified set-pressure and seat tightness using steam.

12. Remarks: NWS Traveler # 11-278. Code parts replaced: Disc s/n AGM17, Spindle s/n AGF07, Compression Screw s/n AGE06 Yoke s/n AEW93 CERTIFICATE OF COMPLIANCE I, Jason C. Gibson certify that to the best of my knowledge and belief the statements made in this report are correct and the repair, modification or replacemtn of the pressure relief devices described above conforms to Section XI of the ASME Code and the National Board Inspection Code "VR" and "NR" rules.

National Board Certificate of Authorization No. 632 to use the "VR" stamp expires April 3, 2015.

National Board Certificate of Authorization No. 81 to use the "NR" stamp expires April 9, 2015.

wit NWS Technologies, LLC _.C . _- Manager, QA Date Repair Organization Authorized representative Title CERTIFICATE OF INSPECTION I, Deryl Simpson holding a valid commission issued by The National Board of Boiler and Pressure Vessel Inspectors and certificate of competency issued by the jurisdiction of NC and employed by HSB of CT of Hartford, CT have inspected the repair, modification or replacement described in this report on 9-5-1,? and state that to the best of my knowledge and belief, this repair, modification or replacement has been completed in accordance with Section Xi of the of the ASME Code and the National Board Inspection Code "VR" and "NR" rules.

By signing this certificate, neither the undersigned nor my employer makes any warranty, expressed or implied, concerning this repair, modification or replacement described in this report. Futhermore, neither the undersigned nor my employer shall be Wi le in any manner for any personal injury, property damage or loss of any kind arising from or connec ted w)Ih)his jr %pection.

9-Sid NB #10652 A, B, N, NS NC # 1206 Date Commissions (NB (Ind endorsements), jurisdiction,& no.)

REPLACEMENT ACTIVITY FORM NIS - 2 OWNER'S REPORT FOR REPAIR/

Section X1 As Required by the Provisions of the ASME Code Date 9-05-12 Owner Exelon Nuclear Name 1 Sheet 1 of 4300 Winfield Road , Warr enville, IL Address Unit 01

2. Plant Byron Nuclear Power Station Name Chur ch Road , Byron, IL P.O. 00475125 Rev-3 4450 N. Germ an Repair Organization, P.O. No., Job No., etc.

Address LLC Type Code Symbol Stamp NR / VR

3. Work Performed by NWS Technologies, 632 / 81 evard Authorization No.

131 Venture Boul 4-3-15 / 4-9-15 Expiration Date Spartanburg, SC 29306 Address

4. Identification of System MAIN STEAM (MS)

None Code Case (a) Applicable Construction Code ASME Section 111 19 74 Edition, N/A Addenda,

5. / 2003 Addenda Repair/Replacement Activity 2001 Edition (b) Applicable Edition of Section XI Used for (c) Section X1 Code Case(s) NONE

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

Name of Manufacturer Board Name of No. Identification Built Manufacturer Serial No.

Com ponent MAIN STEAM VALVE VALVE S/N: 1977 REMOVED NO DRESSER N/A BRO9599 SAFETY RELIEF SIN: AAF42 VALVE -DISK CAT ID#

2011 INSTALLED NO (INCONNEL X-750) SIN: AGM1 8 N/A 1438465-1 DRESSER DISK UTC# 2894628 VALVE S/N: 1977 REMOVED NO DRESSER S/N: G9776 N/A BR09599 SPINDLE CAT ID#

1449980-1 2011 INSTALLED NO DRESSER S/N: AGD79 N/A SPINDLE UTC# 2884360 VALVE SIN: 1977 REMOVED NO DRESSER SIN: D-10 N/A BR09599 SPRING CAT ID#

2011 INSTALLED NO S/N: AGD99 N/A 1432297-1 SPRING DRESSER UTC# 2884057 VALVE SIN: 1977 REMOVED NO COMPRESSION DRESSER S/N: N/A N/A BR09599 SCREW CAT ID#

1452424-1 2011 INSTALLED NO COMPRESSION DRESSER S/N: AGH01 N/A SCREW UTC# 2887900

& compression screw.

7. Description of Work Refurbished valve / installed new disk, spindle, spring Hydrostatic q Pneumatic q Nominal Operating Pressure q - Exempt X

8. Test Conducted:

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

FORM NIS-2 (Back)

9. Remarks P.O. 00475125 Rev-3 Applicable Manufacturer's Data Reports to be attachea NWS Traveler 11-279 CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements Code,Section XI. of the ASME Type Code Symbol Stamp Not Applicabl Certificate of Authorization No.

Not Applicable Signed j ^- r rez^-^--r-- CtA Date / S 120 12 O or Owner's Designee, Title CERTIFICATE OF INSERVICE INSPECT ION I, the undersigned, holding a valid commission issue d by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSR CT of Hartford, CT have inspected the components described in this Owner's Report during the perio 8-3 k- t z- to CC- I's - V -- d

, and state that to the best of my knowledge and the Owner has performed examinations and take belie f, n corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspecto r nor his employer makes any warranty, expressed implied, concerning the examinations and corre or ctive measures described in this Owner's Repo Furthermore, neither the Inspector nor his emp rt.

loyer shall be liable in any manner for any perso injury ar property damage or a loss of any kind nal arising from or connected with this inspection.

ms=s Commissions -u = 9-s4 AT- 'c_ sue- ^. L-Z^SS Inspector's Signature -

National Board, State Province, and Endorseme nts Date: , 20 12

FORM NVR-1 REPORT OF REPAIR 0 REPLACEMEjV^

OF NUCLEAR PRESSURE RELIEF DEVICES 1 77 8 5

1. Work performed by: NWS Technologies, LLC Purchase Order # 475125 131 Venture Boulevard, Spartanburg, SC 29306

2. Work performed for. Exelon Corporation, Byron Nuclear Station 3/4. Owner - name, address and identification of nuclear power plant Exelon Corporation, Byron Nuclear Station 4450 N. German Church Road Byron, IL 61010

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

3707R BR09599 n/a steam 6" 77 (type) ic (mfrs SIN) e (NB*) ) (size) (yr.buiit)

(s e rv d: Construction Code: ASME / III / 1 1974 n/a n/a 2 io(name/section/divisinon) ) (addenda) (Code Cases(s)) (Code Class)

(edit 2001 2003 n/a

6. ASME Code Section XI applicable for inservice inspection:

(edition) (addenda) (Code Case(s))

2001 2003 n/a

7. ASME Code Section XI used for repairs, replacements:

(edition) (addenda) (Code Case(s))

8. Construction Code used for repairs, replacements: 1974 n/a n/a (edition) (addenda) (Code Case(s))

9. Design responsibilities: n/a

10. Opening pressure: 1205 psig Set-pressure adjustment made at NWS Technologies, LLC using steam

11. Description of work (include name and identifying number of replacement parts): Disassembled, cleaned, inspected, lapped nozzle & passivated seat area, installed preoxidized disc, load tested spring, replaced spring assembly, implemented EC#339376 (extend. wear mod.) and EC#340678 (roll pin mod.). assembled.

Certified set-pressure and seat tightness using steam.

12. Remarks: NWS Traveler # 11-279. Code parts replaced: Disc s/n AGM1 8, Spindle s/n AGD79, Compression Screw s/n AGH01, Spring Assembly s/n AGD99 CERTIFICATE OF COMPLIANCE

!, Jason C. Gibson certify that to the best of my knowledge and belief the statements made in this report are correct and the repair, modification or replacemtn of the pressure relief devices described above conforms to Section XI of the ASME Code and the National Board Inspection Code "VR" and "NR" rules.

National Board Certificate of Authorization No. 632 to use the "VR" stamp expires April 3, 2015.

National Board Certificate of Authorization No. 81 to use the "NR" stamp expires April 9, 2015.

IJs /z NWS Technologies, LLC . Manager, QA Date Repair Organization I r' Authorized representative rite CERTIFICATE OF INSPECTION 1, Meryl Simpson holding a valid commission issued by The National Board of Boiler and Pressure Vessel Inspectors and certificate of competency issued by the jurisdiction of NC and employed by HSB of CT of Hartford, CT have inspected the repair, modification or replacement described in this report on 5_F;2 and state that to the best of my knowledge and belief, this repair, modification or replacement has been completed in accordance with Section XI of the of the ASME Code and the National Board Inspection Code "VR" and "NR" rules.

By signing this certificate, neither the undersigned nor my employer makes any warranty, expressed or implied, concerning this repair, modification or replacement described in this report. Futhermore, neither the undersigned nor my employer shall be li le in any manner for any personal injury, property damage or loss of any kind arising from or conn ' h is 'n section.

9-5-_1A NB #10652 A, B, N, NS NC # 1206 JIV n o's signature Commissions (NB (Ind endorsements), jurisdidion,& no.)

Data

NWS Work Progression & 187755 technologies 1 Hold Point Checklist Valve Serial Number BR09599 POD 475125 This block to be signed NWS Traveler # 11.279 after Indicating hold points and prior to work:

This traveler has been rev iewed and approved for use by:

C NM QA - aeon Gbson 7 1.,L r Construction Code: Da ASME Section: III Repair Code: Edition: 74 Addend ASME Section: X1 a: n/a CodeCase: n/a Edition: 2001 Addenda:

This traveler has been rev 2003 CodeCase: n/a iewed and approved for use by:

This traveler has been rev iewed and approv ed for use by:

Work Step NW NWS QA NWS NWS ANI QA Witness ANI Witness Valve had been tested at site Hold Date/Init

. Sent to NWS for refurb and Hold Date/Init steam set assure certific

1. Receipt In 'on atio n.

2. Full disassembly

3. Component inspection

4. Rep air (Section XI) com ponents (Exelon Attachment 5

5. Replace (Section XI) com 3 of X pon ents Exelon Attachment /f 3 recfdl 3 , X

7. Lap and passivate nozzle seat 11&W DA, i%t q7r. S-

8. Ins pect spring / Load test s pring

9. Implement roil pin MOD per EC 340878 10.Im lement extended we ar MOD per EC 339376

11. Valve assembly

12. Set blowdown rin gs

13. Steam set-pressure certificat ion testing ^Nv +!- T* i*Z tN.^)

14. Steam seat tightness tes ^

t

15. Tighten com pression screw locknut & torque seal

18. Lockwire and seal ring 3 X pins and cap S

17. Final Inspection x kPA

18. Completion of Form NVR-1 t /L X

19. Apply nameplate X 21#11 X 1 $7/),.

This block to be signed after com pletion of work:

This traveler has been rev iewed and accepted by:

This traveler has been reviewed and acc epted by:

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

1. Owner Exelon Nuclear Date 09-27-11 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, Byro n, IL Work Order No. PO 475609 Address Repair Organization, P.O. No., Job No.,

etc.

3. Work Performed by NWS Technolo gies Type Code Symbol Stamp Not Applicable Name Authorization No.

131 Venture Blvd, Spartanburg, SC 2930 VR - 632 / NR - 81 6 Expiration Date April 3, 2012 / April 9, 2012 Address

4. Identification of System PRESSURIZER (RY)

5. (a) Applicable Construction Code ASME Section III 19 74 Edition, W74 Addenda, (b) Applicable Edition of Section XI Used for None Code Case Repair/Replacement Activity 2001 Editi (c)Section XI Code Case(s) NONE on _/ 2003 Addenda

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

Relief Valve Built CROSBY VALVE S/N:

RY8010 N/A Valve s/n

& GAGE N56964-00-0094 1979 Corrected N56964-00-0094 yes Relief Valve CROSBY VALVE Spring assembly #

RY8010 Spring & GAGE N/A na SNX2761 1979 Removed -

Relief Valve CROSBY VALVE No Spring assembly RY8010 Spring & GAGE #K81915-46-0026 N/A na 2011 Installed No Relief Valve CROSBY VALVE Disc s/n N90349-RY8010 Disc & GAGE 81-0271 N/A na 1979 Removed No Relief Valve CROSBY VALVE Disc s/h N90349-RY8010 Disc & GAGE 43-0409 N/A na 2008 Installed No Relief Nozzle CROSBY VALVE Nozzle s/n N9055-

& GAGE 49-016 N/A na 1979 Corrected No escrip

7. tion of Work Replaced RY Safety valve spring and disc

, machined nozzle

8. Test Conducted: Hydrostatic q Pneumatic q Nominal Operating Pressure q Exempt Other q Pressure psi Test Temp. OF Note: Supplemental sheets in form of lists, sket information in items 1 through 6 on this repo ches, or drawings may be used, provided (1) size is 8'/2 in. x 11 in., (2) rt is included on each sheet, and (3) each shee of sheets is recorded at the top of this form t is numbered and the number

FORM NIS-2 (Back)

9. Remarks PO 475609 Applicable Manufacturer's Data Reports to-l-e-a-ffia-c-fi-e-a CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code, Section Xl.

Type Code Symbol Stamp Not Applicable Certificate ofAuthorization No. Not Applicable Signed i&-

Owner r Owner's Designee, Title Date -? , 20 11 CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owner's Report during the period OA to , and state that to the best of my knowledge and belief, the Owner has performed xaminations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section Xl.

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

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

Commissions /L/ 4*1 Inspectors Signature National Board, State Province, and Endorsements Date: Af^ ,20 11 (Final)

FORM NVR-1 REPORT OF REPAIR DO REPLACEMENT OF NUCLEAR PRESSURE RELIEF DEVICES

• Rev. 2, Corrected 9/27/11

1. Work performed by: NWS Technologies, LLC Purchase Order # 475609 131 Venture Boulevard, Spartanburg, SC 29306

2. Work performed for: Exelon Corporation, Byron Nuclear Station 3/4. Owner - name, address and identification of nuclear power plant: Exelon Corporation, Byron Nuclear Station 4450 N. German Church Road Byron, IL 61010

5. a: Repaired pressure relief device: Pressurizer Safety Valve b: Name of manufacturer: Crosby Valve & Gage Co.

c: Identifying nos.

HB-86-BP N56964-00-0094 n/a steam 6" 1979 (type) (mfr's S/N) (NB#) (service) (size) (yr.buiit) d: Construction Code: ASME / lit / 1 1974 W74 n/a I (name/section/division) (edition) (addenda) (Code Cases(s)) (Code Class)

6. ASME Code Section XI applicable for inservice inspection: 2001 2003 n/a (edition) (addenda) (Code Case(s))

7. ASME Code Section XI used for repairs, replacements: 2001 2003 n/a (edition) (addenda) (Code Case(s))

8. Construction Code used for repairs, replacements: 1974 W74 n/a (edition) (addenda) (Code Case(s))

9. Design responsibilities: n/a

10. Opening pressure: 2460 psig Set-pressure adjustment made at: NWS Technologies, LLC using steam

11. Description of work (include name and identifying number of replacement parts): As-found test. Quantify leak rate.

Disassembled, replaced spring, disc, machined nozzle. Inspected, cleaned, lapped seats, spring rate tested, lubricated, assembled. Certified set-pressure using steam. Jacked and lapped to restore seat integrity.

Final seat tightness and bellows/gasket integrity verified using gaseous nitrogen.

12. Remarks: NWS Traveler # 11-203. New Spring Tag: K81915-46-0026, new disc s/n N90349-43-0409.

Rev. 1 corrects spring s/n in Remarks (12). Rev. 2 corrects Construction Code years (5d, 8).

CERTIFICATE OF COMPLIANCE I, Jason C. Gibson certify that to the best of my knowledge and belief the statements made in this report are correct and the repair, modification or replacement of the pressure relief devices described above conforms to Section XI of the ASME Code and the National Board Inspection Code "VR" and "NR" rules.

National Board Certificate of Authorization No. 632 to use the "VR" stamp expires April 3, 2012.

National Board Certificate of Authorization No. 81 to use the "NR" stamp expires April 9, 2012.

f 27 1 /1 NWS Technologies, LLC Q... C. -- QA Manager ate Repair Organization Authorized representative Title CERTIFICATE OF INSPECTION I, Charles F. Toegel Jr. holding a valid commission issued by The National Board of Boiler and Pressure Vessel Inspectors and certificate of competency issued by the jurisdiction of NC and employed by Hartford Steam Boiler of Hartford, CT have inspected the repair, modification or replacement described in this report on 2 7 /( and state that to the best of my knowledge and belief, this repair, modification or replacement has been completed in accordance with Section XI of the of the ASME Code and the National Board Inspection Code "VR" and "NR" rules.

By signing this certificate, neither the undersigned nor my employer makes any warranty, expressed or implied, concerning this repair, modification or replacement described in this report. Futhermore, neither the undersigned nor my employer shall be liable in any manner for any personal injury, property damage or loss of any kind arising from or connecteyt voth this inspegtio NB # 8462, A, N, I NC# 1073 I t7at at Commissions (NB (incl endorsements), jurisdiction,& no.)

ACTIVITY FORM NIS- 2 OWNER'S REPORT FOR REPAIR/REPLACEMENT As Required by the Provisions of the ASME Code Section XI Exelon Nuclear Date 08/17/12 Owner Name Sheet 1 of 1 4300 Winfiel d Road, Warren ville, IL Address Byron Nuclear Power Station Unit 01

2. Plant Name 4450 N. German Church Road, Byron, IL Work Order No. PO 480138 Repair Organization, P.O. No., Job No., etc.

Address NWS Technologies Type Code Symbol Stamp Not Applicable

3. Work Performed by VR - 632 / NR - 81 Name Authori zation No.

burg, SC 29306 Expirat ion Date April 3, 2015 / April 9, 2015 131 Ventur e Blvd, Spartan Address

4. Identification of System PRESSURIZER (RY)

, W72 Addenda, None Code Case

5. (a) Applicable Construction Code ASME Section 111 19 71 Edition / 2003 Addend a 2001 Edition (b) Applicable Edition of Section XI Used for Repair/Replacement Activity (c)Section XI Code Case(s) NONE

6. Identification of Components ASME Corrected, Code Removed, or Stamped National ther ear Installed (Yes or No) ame of anufacturer Board ame of Identification Built Manufacturer Serial No. No.

Com ponent Relief Valve CROSBY VALVE S/N: Valve s/n 1976 REMOVED No RY8010 Spring & GAGE NX-2761-0029 N/A N56964-00-0048 Assembly Relief Valve ANDERSON INSTALLED No S/N# K81915-47-0027 N/A Cat ID# 1450227-1 2012 RY8010 Spring GREENWOOD Assembly CROSBY

7. on of Work Descripti Replaced spring in RY Safety valve s/n N56964-00-0048 / CAT ID# 1402762-1 ucted: Hydrostatic q Pneumatic q Nominal Operating Pressure q Exempt Test Cond 8.

psi Test Temp. OF Other q Pressure used, provided (1) size is 81/2 in. x 11 in., (2)

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

FORM NIS-2 (Back)

9. Remarks PO 480138 Applicable Manufacturer's Data eports to be attached CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No. Not Applicable Signed cea,__ _x Date 2012 wner,br Owner's Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of a ford, CT have i sp cted the components described in this Owner's Report during the period to and state that to the best of my knowledge and belief, the owner has performed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code, Section Xl.

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

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

Commissions 4//5 W / S k'X G Inspector's Signature National Board, State Province, and Endorsements Date: /7,2012 (Final)

T IE(

FORM NVR-1 REPORT OF REPAIR Q' REPLACEMEN OF NUCLEAR PRESSURE RELIEF DEVICES Purchase Order # 480138

1. Work performed by: NWS Technologies, LLC 131 Venture Boulevard, Sparta nburg, SC 29306

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

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

5. a: Repaired pressure relief device: Pressurizer Safety Valve b: Name of manufacturer. Crosby Valve & Gage Co.

c: Identifying nos. 6" 1976 HB-86-BP N56964-00-0048 n/a steam (NB#) (service) (size) (yr.buitt)

(type) (mf s SIN)

W72 n/a I d: Construction Code: ASME / III / 1 1971 (addenda) (Code Cases(s)) (Code Class)

(name/section/division) (edition) 2001 2003 n/a

6. ASME Code Section XI applicable for inservice inspection: (Code Case(s))

(edition) (addenda) 2001 2003 n/a

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

(edition) (addenda) 1971 W72 n/a

8. Construction Code used for repairs, replacements: (Code Case(s))

(edition) (addenda)

9. Design responsibilities: n/a

10. Opening pressure: 2460 psig steam NWS Technologies, LLC using Set pressure adjustment made at ent parts): As-found test. Disassembled,

11. Description of work (include name and identifying number of replacem d, lapped seats, lubricated, assembled.

spring test, replaced spring assembly. Inspected components, cleane integrity.

Certified setpressure using steam. Jacked and lapped to restore seat using gaseou s nitrogen.

Final seat tightness and bellows/gasket integrity verified 5-47-0027 (Suhm 0027)

12. Remarks: NWS Traveler # 11-343: New Spring S/N: K8191 CERTIFICATE OF COMPLIANCE made in this I, Jason C. Gibson certify that to the best of my knowledge and belief the statements pressure relief devices described above report are correct and the repair, modification or replacement of the al Board Inspec tion Code "VR" and "NR" rules.

conforms to Section XI of the ASME Code and the Nation April 3, 2015.

632 to use the "VR" stamp expires National Board Certificate of Authorization No. April 9, 2015.

National Board Certificate of Authorization No. 81 to use the "NR" stamp expires

. QA Manager Y / NWS Technologies, LLC Title

_/ Authori zed represen tative Date Repair Organization ^

CERTIFICATE OF INSPECTION and Pressure I, Elmostafa Elkourl holding a valid commission issued by The National Board of Boiler ction of SC and employed Vessel Inspectors and certificate of competency issued by the jurisdi have inspected the repair modification by Hartford Steam Boiler of Hartford, CT or replacement described in this report on and state that to the best of my knowledge and belief, ance with Section XI of the of the ASME this repair, modification or replacement has been completed in accord Code and the National Board Inspection Code "VR" and "NR" rules.

makes any warranty, expressed or implied, By signing this certificate, neither the undersigned nor my employer this report. Futhermore, neither the undersigned concerning this repair, modification or replacement described in property damage or loss of any kind nor my employer shall be liable in any manner for any personal injury, arising from or connected with this inspection.

NB#13930, A, N, I SC#264 Inspectors Signature Commissions (NB (ind endorsements), jurisdiction,& no.)

Date

1. 8 6778

REPLACEMENT ACTIVITY FORM NIS -2 OWNER'S REPORT FOR REPAIR/ Section XI As Required by the Provisions of the ASME Code Date 9-05-12 Owner Exelon Nuclear Name 1 Sheet 1 4300 Winfield Road, Warrenville, IL Address Unit 01

2. Plant Byron Nuclear Power Station Name ch Road , Byron, IL P.O.00485139 4450 N. German Chur Repair Organization, P.O. No., Job No., etc.

Address Type Code Symbol Stamp NR / VR

3. Work Performed by NWS Technologies, LLC rizatio n No. 632 / 81 Autho 131 Venture Boulevard 4-3-15 / 4-9-15 Expiration Date Spartanburg, SC 29306 Address

4. Identification of System MAIN STEAM (MS)

None Code Case (a) Applicable Construction Code ASME Section 111 19 74 Edition, N/A Addenda,

5. ir/Replacement Activity 2001 Editio n _/ 2003 Addenda (b) Applicable Edition of Section XI Used for Repa (c)Section XI Code Case(s) NONE

6. Identification of Components ASME Corrected, Code Removed, or Stamped National (Yes or No)

Other Year Installed Name of Manufacturer Board Name of No. Identification Built Manufacturer Serial No.

Component MAIN STEAM VALVE VALVE S/N: 1978 REMOVED NO DRESSER N/A BU01482 SAFETY RELIEF S/N: AAH67 VALVE -DISK CAT ID#

2011 INSTALLED NO (INCONNEL X-7 50) S/N: AET40 N/A 1438465-1 DRESSER DISK UTC# 2888324 VALVE S/N: 1978 REMOVED NO DRESSER S/N: G1299 N/A BU01482 SPINDLE CAT ID#

2011 INSTALLED NO S/N: AGD77 N/A 1449980-1 SPINDLE DRESSER UTC# 2884360 VALVE S/N: 1978 REMOVED NO COMPRESSION DRESSER S/N: N/A N/A BU01482 SCREW CAT ID#

1452424-1 2011 INSTALLED NO COMPRESSION DRESSER S/N: AGH02 N/A SCREW UTC# 2893938 n screw.

7. Description of Work Refurbished valve / installed new disk, spindle & compressio Hydrostatic q Pneumatic q Nominal Operating Pressure q Exempt

8. Test Conducted:

psi Test Temp. OF Other q Pressure 11 in., (2) or drawings may be used, provided (1) size is 8'/z in. x Note: Supplemental sheets in form of lists, sketches, is numb ered and the number ded on each sheet, and (3) each sheet information in items 1 through 6 on this report is inclu of sheets is recorded at the top of this form.

FORM NIS-2 (Back)

9. Remarks P.O.00475125 Rev-3 Applicable Manu factureFs Data Reports to be attach ed NWS Traveler 12-265 CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are correct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Authorization No.

Not Applicable Signed Date 20 12 Owner dic Owner' s Designee, Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have inspected the components described in this Owner's Report during the period B -^'- %. -I- to t- '- '% - , and state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his emplo yer makes any warranty, expressed or implied, concerning the examinations and corrective meas ures described in this Owner's Report.

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

U"t-,--- Commissions t-& p v 33-^ 5- 4 A*j t 1 cGV Inspector's Signature National Board, State Province, and Endorsements Date: 'c^T, t 5 -,20 12

FORM NVR-1 REPORT OF REPAIR REPLACEMENT El OF NUCLEAR PRESSURE RELIEF DEVICES

1. work performed by: NWS Technologies, LLC Purchase Order # 485139 131 Venture Boulevard, Spartanburg, SC 29306

2. Work performed for. Exelon Corporation, Byron Nuclear Station 18 7 7 3/4. Owner - name, address and identification of nuclear power plant Exelon Corporation, Byron Nuclear Station 4450 N. German Church Road Byron, IL 61010

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

3707R BU01482 n/a steam 6" 78 (type) (mf s SIN) (NB#) (service) (size) (yr.buift) d: Construction Code: ASME / III / 1 1974 n/a n/a 2 (name/section/division) (edition) (addenda) (Code Cases(s)) (Code class)

6. ASME Code Section XI applicable for inservice inspection: 2001 2003 n/a (edition) (addends) (Code Case(s))

7. ASME Code Section XI used for repairs, replacements: 2001 2003 n/a (edition) (addenda) (Code Case(s))

8. Construction Code used for repairs, replacements: 1974 n/a n/a (edition) (addenda) (Code Case(s))

9. Design responsibilities: n/a

10. Opening pressure: 1220 psig Set-pressure adjustment made at NWS Technologies, LLC using steam

11. Description of work (include name and identifying number of replacement parts): Disassembled, cleaned, inspected, lapped nozzle & passivated seat area, installed preoxidized disc, load tested spring, implemented EC#339376 (extend. wear and EC#340678 (roll pin _mod), assembled. Certified set-pressure and seat tightness using steam.

12. Remarks: NWS Traveler # 12-265. Code parts replaced: Disc s /n AET40, Spindle s/n AGD77, Compression Screw s/n AGH02 CERTIFICATE OF COMPLIANCE 1, Jason C. Gibson certify that to the best of my knowledge and belief the statements made in this report are correct and the repair, modification or replacemtn of the pressure relief devices described above conforms to Section Xt of the ASME Code and the National Board Inspection Code "VR" and "NR" rules.

National Board Certificate of Authorization No. 632 to use the "VR" stamp expires April 3, 2015.

National Board Certificate of Authorization No. 81 to use the "NR" stamp expires Apri19,2015.

f /Z. NWS Technologies, LLC __ -i --- _ ! - Manager, QA ate Repair Organization U Authorized representative Title CERTIFICATE OF INSPECTION 1, Deryl Simpson holding a valid commission issued by The National Board of Boiler and Pressure Vessel Inspectors and certificate of competency issued by the jurisdiction of NC and employed by HSB of CT of Hartford, CT have inspected the repair, modification or replacement described in this report on and state that to the best of my knowledge and belief, this repair, modification or replacement has been completed in accordance with Section Xl of the of the ASME Code and the National Board Inspection Code "VR" and "NR" rules.

By signing this certificate, neither the undersigned nor my employer makes any warranty, expressed or implied, concerning this repair, modification or replacement described in this report. Futhermore, neither the undersigned nor my employer shall be ii in any manner for any personal injury, property damage or loss of any kind arising from or connect t' n.

F-15'-/2 - I -1<N-7 NB #10652 A, B, N, NS NC # 1206 Date in s Signature Commissions (NB (ind endorsements), jurisdiction,& no.)

TY FORM NIS-2 OWNER'S REPORT FOR REPAIR/REPLACEMENT ACTIVI As Required by the Provisions of the ASME Code Section XI Owner Exelon Nuclear Date 08/31/12 1

Name ille, IL Sheet 1 of 1 4300 Winfield Road, Warrenv Address Plant Byron Nuclear Power Station Unit 01 2.

Name 4450 N. German Church Road, Byron, IL Purchase Order 00493340 Rev-0 Repair Organization, P.O. No., Job No., etc.

Address ECKER - ERHARDT Type Code Symbol Stamp Not Applicable

3. Work Performed by Name Authoriz ation No. Not Applicab le Chicago , IL 60608 Expiration Date Not Applicab le 2347 West 18th Street, Address

4. Identification of System SAFETY INJECTION (SI)

ASME Section III 19 74 Edition, S75 Addenda, None Code Case

5. (a) Applicable Construction Code a 2001 Edition- / 2003 Addend (b) Applicable Edition of Section XI Used for Repair/Replacement Activity (c)Section XI Code Case(s) NONE

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

Name of Name of Manufacturer Serial No. No. Identification Built Component Manufacturer Ht # N/A CAT ID# 1459561-1 2012 CORRECTED NO 90° ELBOW Consolidated MQPF-1 UTC# 2921328 Ht # CAT ID# 1459561-1 2012 CORRECTED NO 90° ELBOW Consolidated N/A UTC# 2921329 NAPY-1 HT# N/A CAT ID# 1459571-1 2012 CORRECTED NO TEE Consolidated NAPY-1 UTC# 2921327

7. Description of Work Machined counter bore in fittings per CC-AA-501-1025

8. Test Conducted: Hydrostatic q Pneumatic q Nominal Operating Pressure q Exempt psi Test Temp. OF Other q Pressure provided (1) size is 81/2 in. x 11 in., (2)

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

FORM NIS-2 (Back)

9. Remarks Purchase Order 00493340 Rev-0 Applicable Manufacturers Data Reports to be attach ed UTC# 2921328 was originally UTC# 2910425 prior to machining UTC# 2921329 was originally UTC# 2912434 prior to mach ining UTC# 2921327 was oriclinally UTC# 2911287 prior to machining CERTIFICATE OF COMPLIANCE I certify that the statements made in the report are corre ct and this conforms to the requirements of the ASME Code,Section XI.

Type Code Symbol Stamp Not Applicable Certificate of Authorizati No. Not Applicable Signed Date ?I'_ 20 12 ffW e 11 r Owner's Designee. Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by HSB CT of Hartford, CT have i sp cted the components desc ribed in this Owner's Report during the period

, _ to 31,IIA and state that to the best of my knowledge and belief e Owner has performed examinations and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASM E Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations and corrective meas ures described in this Owner's Report.

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

_ ,a __ _ _L Commissions Inspector' s Signature 111112: f--,,Y National Board, State Province, and Endorsement s

Date: 31 , 20 12