ML13008A093

Inservice Inspection Summary Report, Chapter 6.0, Containment ISI Program, Part 7 of 7-08X

ML13008A093
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: ML13008A093 (17)

Text

6.0 CONTAINMENT ISI PROGRAM There were no containment concrete inspections in this period. Therefore, provisions of 10CFR50.55a(b)(2)(viii)(E) through (b)(2)(viii)(G) do not apply.

However, provisions of 10CFR50.55a(b)(2)(ix)(A) do apply due to indications found during the inspection of moisture barrier in B1 R18.

(1) The entire length of moisture barrier at elev. 377' of the containment structure was examined by a direct examination method (VT-1) under WO #01419539-01 and it was found to have been separated at 4 different locations (IR #01411023) from the trough channel used for drainage collection. The separation was attributed to inadequate application of moisture barrier material during the previous installation.

(2) The moisture barrier does not provide any pressure boundary function other than being used as a protection for the liner plate against possible corrosion. The degraded moisture barrier was removed at the affected areas and the subsequently-exposed liner plate was then examined under WO #01572126. The examination revealed the liner plate uncoated surfaces contained pitting at several locations with a maximum metal loss in excess of 10%

at only two locations (IR #01417251). The liner plate condition at these areas was evaluated and the degradations were found to be acceptable by comparison to the acceptance criteria of 50% liner material loss based on an existing evaluation.

(3) The degraded conditions of the liner plate were found acceptable by evaluation without repair/replacement activities. The degraded moisture barrier was replaced with like for like at all the affected areas.

Referenced Issue Reports I R 01411023 Date: 09/10/2012

Subject:

R3 MOISTURE BARRIER DEGRADED AT 4 SEPARATE LOCATIONS Condition

Description:

During the scheduled inspection of the moisture barrier along the outer liner plate at elev. 377' of the U-1 containment during B1 R18, the condition of the moisture barrier was noted to have been degraded at 4 separate locations as follows:

1) Between R12 and R13, degraded area begins 12" to the right of the leak chase and continues for approximately 3'

2) Between R20 and R21 and directly below penetration P86, degraded area is approximately 12" long

3) Between R21 and R1, degraded area is approximately 6" long and is located one third way from R1

4) A degraded area approximately 12" long located directly below P74.

No operability concern exists. All degraded areas are in the form of slight separation of the moisture barrier top surface from the outer edge of the trough. No full separation has occurred and therefore, no moisture was able to reach the liner plate.

The recommended action is to fully restore the degraded areas prior to exiting 61 R18 in order to prevent further degradation of the affected areas.

Immediate actions taken:

1) Completed the visual inspection of the moisture barrier around the full circumference of the containment outer wall Section 3.0 Page 1 of 3

2) Walked down the affected area with the Williams Specialty Level III coating specialist.

Recommended Actions: Generate a WO to:

1) remove the existing degraded moisture barrier at the affected and aforementioned areas,

2) Remove protective coating on the newly exposed liner plate directly behind the affected moisture barrier,

3) Require Programs Engineering to perform a visual inspection of the exposed liner plate

4) Prepare the exposed liner plate areas and apply approved Level I coating on the affected areas

5) After the proper curing of the coating, install replacement moisture barrier in accordance with the design drawings at the affected areas.

Functional Basis:

The Moisture Barrier is functional but degraded.

I R 01417251 Date: 09/23/2012

Subject:

LINER PLATE METAL LOSS MORE THAN 10%

Condition

Description:

During the performance of the exposed liner plate inspection where the degraded moisture barrier was removed at four separate locations for replacement (IR #1411023), the liner plate material loss due to inactive corrosion exceeded the allowable limit of 10 % per the ASME Section XI, Subsection IWE.

Based on the documented inspection results (WO #1572126-02), the liner plate behind the removed moisture barrier was observed to have had a film of rust due to corrosion that was determined not to be active. This necessitated pitting depth measurements at these areas. The surfaces of the liner plate at these locations were also not coated from the original construction.

In fact, liner plate behind the moisture barrier is not coated at all. The observed inactive corrosion is the result of introduction of moisture at the degraded moisture barrier locations since B1 R17 as no moisture barrier degradation was observed at that time.

The following pit depths were then obtained (the nominal liner plate thickness is 0.250" or 16/64"):

At area 1: 1/32" (>10 % metal loss, effective nominal wall thickness remaining: 14/64")

At area 2: 1/64" (<10% metal loss, effective nominal wall thickness remaining: 15/64")

At area 3: 1/64" (<10% metal loss, effective nominal wall thickness remaining: 15/64")

At area 4: 1/32" (>10% metal loss, effective nominal wall thickness remaining: 14/64").

(The above areas are defined in the work package WO #1572126-02).

Per the ASME code Section XI, Subsection IWE, liner plate metal loss of more than 10% shall be evaluated for acceptability or repair / replacement.

As a supplemental examination, Ultrasonic examination were performed and the following min.

liner plate thickness was obtained (UT report #2012-323 and 2012-327):

At area 1: 0.220" At area 2: 0.254" At area 3: 0.246" At area 4: 0.222".

There is no operability concern. The liner plate min. thickness may be 0.125" (or 8/64") per NDIT #BYR- 99-226. Therefore, the minimum wall thickness met the owner -established Section 3.0 Page 2 of 3

acceptance criteria. Furthermore, the remaining areas are not suspected of having liner plate corrosion since the inspection of the moisture barrier in B1 R18 did not identify any other moisture barrier degradation.

Therefore, the current condition of the liner plate is acceptable as-is until B1 R19 where liner plate will be coated in its entirety and, the liner plate is properly coated at the degraded locations. Even if the remaining areas were to develop degradation based on any hypothetical moisture barrier degradation during the next full Unit operating cycle, the rate of liner plate degradation will not exceed the available nominal margin as the liner plate had at most degraded by only 2/64" during one refueling outage. Additionally, the UT results had indicated the liner plate to be thicker than the nominal wall thickness and therefore, additional margin exists.

Immediate actions taken:

1) Identified there were no other degraded moisture barrier in U-1.

2) Removed the degraded moisture barrier and cleaned the exposed liner plate surfaces behind the removed moisture barrier.

3) Completed pitting depth measurements.

4) Completed supplemental UT examinations at the affected areas.

5) The affected liner plate is coated using an approved Level I coating.

6) New moisture barrier will be installed where the degraded moisture barrier was removed (per WO #1572126-01).

Recommended Actions:

1) An action to Engineering programs to complete an evaluation as the result of 10% metal loss condition as required by the ASME section XI, Subsection IWE (due 180 days).

2) An action to Engineering Programs to scope in the B1 R19 outage scope a WO to replace the entire moisture barrier and apply level I coating to the exposed liner plate (due 180 days).

Operable Basis: U-1 Containment is OPERABLE. There is no operability concern. The liner plate min. thickness may be 0.125" (or 8/64") per NDIT #BYR-99-226. Therefore, the minimum wall thickness met the owner-established acceptance criteria. Furthermore, the remaining areas are not suspected of having liner plat corrosion since the inspection of the moisture barrier in 131 R18 did not identify any other moisture barrier degradation. Therefore, the current condition of the liner plate is acceptable as-is until B1 R19 where liner plate will be coated in its entirety and, the liner plate is properly coated at the degraded locations. Even if the remaining areas were to develop degradation based on any hypothetical moisture barrier degradation during the next full Unit operating cycle, the rate of liner plate degradation will not exceed the available nominal margin as the liner plate had at most degraded by only 2/64" during one refueling outage. Additionally, the UT results had indicated the liner plate to be thicker than the nominal wall thickness and therefore, additional margin exists.

Section 3.0 Page 3 of 3

1/2/2013 Exeknt Byron Station Unit 1 B1 R17 ISI Outage Report Weld / Component Outage Summary SYSTEM: Residual Heat Removal System (RH)

Section Xt.'- ;`}Component 10 [Line Number Rett+  : i ec tncai Code Actual Resu lts fie, uestts. Coverage :. j ' Exam C Description Notes.

Comments C-C C3. 30 1RH-01-PA/RHP E-3 1 RH-01-PA 100 PT RI Pump Lug VT-1 NRI UT GEOM OBS17-127 0.25' linear indication at the pump side toe of the weld. Acceptable per code. VT-1 (PT obstructed areas) and UT (thickness) peformed as supplemental examinations. IR 01192603.

C-C C3. 20 1 RH02AA-8/C20 1 RH02AA-8 NA 92 PT NRI Closure Plate 1AB-64 OBS17-128 Exam obstructed by adjacent penetration welds.

R-A R1.20 1 RH03AA-8/C21 1 RH03AA-8 13R-02 C5.11 100 UT NRI Tee - Pipe 13T-01 13T-02 OBS17-178 Examination for MRP- 192 requirements. Initial UT of weld. No previous PSI or ISI examinations.

N/A N/A 1 RH03AA-8/C22L 1 RH03AA-8 C5.12 100 UT NRI LONG SEAM OBS17-179 Examination for MRP- 192 requirements. Initial UT of weld. No previous PSI or ISI examinations.

16

1/2/2013 Byron Station Unit 1 B1 R17 ISI Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 31 of 50)

1. Owner: Exelon Generation Company,(EGC,LLC), 4300 Winfield Road, Warrenville, Illinois 60555 (Name and Address of Owner)

2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant)

3. Plant Unit: 1 4. Owner Certificate Of Authorization (if required): N/A

5. Commercial Service Date: 09/16/85 6. National Board Number for Unit: N-198

7. Components Inspected: Residual Heat Removal System (RH)

Manufacturer Component or Manufacturer State or National or Installer Appurtenance or Installer Province No. Board No.

Serial No.

1 RH-01-PA/RHP E-3 Ingersoll Rand Corp. 127428 NA 167 1RH02AA-8/C20 Hunter Corp. 1-RH-2-N5 NA NA 1RH03AA-8/C21 Hunter Corp. 1-RH-2-N5 NA NA 1RH03AA-8/C22L Hunter Corp. 1-RH-2-N5 NA NA Note (1): Baseline Examination Note (2): Snubber examined as a Component Support Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 in. x 11 in., (2) information in items 1 through 6 of this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form.

Computer Generated Form

DOCUMENT NO.: 5.2 REV. NO.: 0 JW4 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 3-31-11 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, Byron, IL Work Order No. 01348440-01 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 SI - Safety Injection

5. (a) Applicable Construction Code ASME Sect III Valve 19 71 Edition, W72 Addenda, None Code Case ASME Sect III Pipe 19 74 Edition, S75 Addenda, None Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity: 2001 Edition/2003 Addenda (c)Section XI Code Case(s) None

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

Component Manufacturer Serial No. No. Identification Built 2" CHECK VALVE KEROTEST S/N: KYA1-9 7749 thru 7757 1SI8819D 1975 REMOVED YES 2" CHECK VALVE W 1 SI8819D YES Flowserve S/N 83BHN N/A 2008 INSTALLED

/ PIPE NIPPLES CAT ID: 1415336 HUNTER 1SI18ED-2" 1984 REMOVED NO 2" SCH . 160 PIPE HT#:462460 N/A CORP.

HUNTER N/A 1S118FD-2" 1984 REMOVED NO 2" SCH . 160 PIPE HT#:745223 CORP.

2" 90 DEG 6000# HUNTER HT#: PH N/A 1SI18FD-2" 1984 REMOVED NO ELBOW CORP.

2" 90 DEG 6000# Consolidated CAT ID: 39072 2011 INSTALLED NO Ht# 44100 N/A ELBOW Power Supply 2" 1500# SW HUNTER N/A 1SI18ED-2" 1984 REMOVED NO HT#: HJ998 FLANGE CORP.

2" 1500# SW Consolidated CAT ID #30443 2011 INSTALLED NO Ht# 2949ANE1 N/A FLANGE Power Supply SEAL WELD ON N/A 1SI8819D 2008 INSTALLED NO Flowserve S/N 83BHN VALVE CAP

7. Description of Work REPLACED CHECK VALVE, PIPING AND FLANGE. SEAL WELDED VALVE CAP

8. Test Conducted: Hydrostatic q Pneumatic q Nominal Operating Pressure Exempt q Other q Pressure *Upstream 800 / Downstream 2237 psi Test Temp. AMBIENT 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 01348440-01 Applicable Manufacturer's ata 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 v_, i .- 4. Date 6-IS' , 20 11 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 in ed the components described in this Owner's Report during the period AK 11 _- 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 nspector's Signature National Board, State Province, and Endorsements Date: , i d . , 20 11 lov (Final)

FORM NPV-1 CERTIFICATE HOLDERS' DATA REPORT FOR NUCLEAR PUMPS OR VALVES" As Required by the Provisions of the ASME Code, Section Itt, Division 1 2 Pg. 1 of

1. Manufactured and certified by Flowsetye COfPOrat On, 1900 South Saunders St. Raleigh, NC 27603 (name and address of N Certificate Holder)

Exelon Business Services, An Exelon Company P.O. Box 805388 Chicago, IL 60680-5388

2. Manufactured for (name and address of Purchaser)

Byron Station 4450 North German Church Rd. Byron, IL 61010-9794

3. Location of installation (name and address)

Drawing 06-42580-01 Rev. C CAN N/A

4. Model No., Series No., or Type 1522 Piston Check 1971 WINTER 1972 1 N/A

5. ASME Code,Section III, Division 1: (addenda date) (lass) (Code Case no.)

(edition)

Valve 2

6. Pump or valve Nominal inlet size 2 Outlet size (in.)

7. Material:

(a) valve Body SA182'F316 Bonnet SA182-F316 Disk SA479-316 Bolting NIA (b) pump Casing Cover Bolting Is) (b) (c) Id) (a)

Cert. Nat'l Body/Casing Bonnet/Cover Disk Holder's Board Serial Serial Serial Serial No. No. No. No. No.

83BHN N/A _ 84576-20 314449-97 24513-79

' Supplemental information in the form of lists, sketches, or drawings maybe used provided I1) size is 81/2 x 11, (2) information in items 1 through 4 on this Data Report is included on each sheet, (3) each sheet is numbered and the number of sheets is recorded at the top of this form. .,l I 148556

FORM NPV- 1 (Back - Pg. 2 of 2 }

83BHN Certificate Holder's Serial No.

2500 psi 650

9. Design conditions of or valve pressure class 1522 (pressure) (temperature) 3650 psi at 100"F

9. Cold working pressure 5500 4020

10. Hydrostatic test psi. Disk differential test pressure psi

11. Remarks: S 42580-01 CERTIFICATION OF DESIGN PA Design Specification certified by L. Ike Ezekoye RE. State Reg. no. 18374-E Design Report certified by Ron S. Farrell P.E. State NC Reg. no. (128656 CERTIFICATE OF COMPLIANCE We certify that the statements made in this report are correct and that this pump or valve conforms to the rules for construction of the ASME Code,Section III, Division 1.

N-1562 Expire N Certificate of Authorization No.

rt 0 gr Flowserve Corporation Date Name Sig ned (N Certificate Holder)

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

of Hartford, CT have inspected the pump, or valve, described in this Data Report on

, and state that to the best of my knowledge and belief, the Certificate Holder has constructed this pump, or valve, in accordance with the ASME Code,Section III, Division 1.

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

^^y

}.

Date t' S Signed Commissions A-14 / 1"7 oeixed Nuc ear Ins e. r) INari, ad. (Iru).^endorsemants) and state or pray. and no.)

148 3

REVISED COPY 3/8/11 FORM N -5 CERTIFICATE HOLDERS' DATA REPORT FOR INSTALLATION OR SHOP ASSEMBLY OF NUCLEAR POWER PLANT COMPONENTS, SUPPORTS, AND APPURTENANCES*

As Required by the Provisions of the ASME Code, Section 111, Division 1 Pg. 1 of 2 certified by Fiowserve Corporation, 1900 South Saunders St Raleigh, NC 27603

t. Installed and !name end address of Nor NA Certificate Holder)

P.Q. Box 805388 Chicago, IL 60680-5388

2. Installed for (name and add Barron Station 4450 North German Church Rd. Byron, IL 61010-9794

3. Location of installation (name and address) 83BHN 06-42580-01 Rey.C N/A N/A 2008

4. System identification Nuclear Piping (system name) (Cart. Holder serial no) (draw(ng no.) (CRN) (Ncft ad. no.) (year Irststlad) 1974 Summer 1975 1 N/A

5. ASME Code, Section ill, Division 1: !ciao) (Code Case no.)

tedidon) (addenda data)

N Certificate Holder having overall responsibility Fiowserve Corp. 1900 S. Saunders St. Raleigh, NC 27603

6. (name and addreaa)

7. Nuclear components, parts, appurtenances, and supports installed (list each item and attach copies of N Certificate Holders' Data Reports and NPT Certificate Holders' Data Reports.):

Components:

tbi Name of Certificate fa) Como. or Aoourt Holder Ic) Serial No. fdi CRN No. W Nat'l. Bd. No. (n Year Built valve flowserve 83SHN N/A N/A 2008 Piping and part installation:

(a) Piping or Part (b) Name of Certificate (1) Year Suitt - Parts Subassembly Holder (c) Serial No. (d) CRN No. (E) Natl. Bd. No. Only Support installation:

(b1 Name of (d) Design ReptJ.oad (a) Support No. Certificate Holder (c) Serial No. Capes. Data Sheet (o) CRN No. if) Nat') Bd. No. (g) Year Built Additional material excluding welding material:

(at Name of Mfr. (b) Material Spec. No. (c) Dimensions - Overall DuBose SA312-304 (Heat* 25107-4) 2" SCH.160 Pipe

8. Installation in accordance with:

Procedure or Drawing No. Prepared by 06-42580-01 EloWserve Corporation 1-4-- 0 T..._.

9. Hydrostatic test pressure 5500 psi sit to 172...1... . -` °F. Sysfein'desigri pressure- 2500- et temp.

10. Remarks:

• Supplemental information in form of lists, sketches, or drawings may be used provided (1) size Is 02 x 11, (2) infomw INi1 S Nhrough 4 on this Data Report is Included on each sheet, (3) each sheet Is numbered and the number of sheets In recorded at the top of this form.

(114}5)

REVISED COPY 3/8/11 2

FORM N-5 (Back --- Pg. 2 of 83BHN Certificate Holder's Serial No.

CERTIFICATION OF DESIGN FOR PIPING SYSTEM Design information on file at Design report on file at Design specification certified by P.E. State Reg. no.

Design report certified by P.E. State Reg. no.

Design conditions of pressure piping psi. Temp.

CERTIFICATE OF INSTAUA71ON COMPLIANCE We certify that the statements made In this report are correct and that this installation conforms to the rules for construction of the ASME Code, Section 111, Division 1. and was performed In accordance with the documents listed In 8 above.

N or NA Certificate of Authorization No. Expires Date Name Signed IN or NA Cersteats Holder} (authorized re xesentedve)

CERTIFICATE OF INSTALLATION INSPECTION 1, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of and employed by of have Inspected the installation of the items described in this Data Report on and state that to the best of my knowledge and belief, the Certificate of Authorization Holder has performed this installation in accordance with the ASME Code,Section III, Division 1.

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

Date Signed Commissions (Authorized Nuclear Impactor} tNare. ad. ((not. endorsements) and state or pr on. and no.t CERTIFICATE OF COMPLIANCE FOR OVERALL. RESPONSIBILITY Following completion of the above, the Certificate of Authorization Holder accepting overall responsibility for the piping system shall complete the following statement:

We certify that the statements made by this report are correct and that the piping system conforms to, the rules for construction of the ASME Code,Section III, Division 1.

N-1562 11-25-09 N Certificate of Authorization No. Expires Syy//

Ss^ Fiowserve C ration .--

Date Name Signed e, _,.._.

O CarriCceto Holder) (authorize d repro ve)

CERTIFICATE OF INSPECTION I, the ten igned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of and employed by of L!aarrt ord, CT have inspected the piping system described in this Data Report on v and state that to the best of my knowledge and belief, the Certificate Holder has constructed this piping system in a ordance with the ASME Code, Section Ill, Division 1.

By signing th Is certificate, neither the inspector nor his employer makes any warranty, expressed or implied, concerning the piping system described in this Data Report. Furthermore, neither the inspector nor his employer shall be liable In any manner for any personal Injury or property damage or a loss of any kind arising from or connected with Inspection.

) / j^

Data Signed Commissions > A)

!Authorized N napactor) A [Nail . Bd find . shoornmentsf and state 27?zor prov and. na . t

DOCUMENT NO.: 5.2 REV. NO.: 0

• CORR CTED 1-11-12 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 4-24-10 Name 4300 Winfield Road, Warrenville, IL Sheet 1 of 2 Address

2. Plant Byron Nuclear Power Station Unit 01 Name 4450 N. German Church Road, Byron, IL Work Order No. 01251724-01 Address Repair Organization, P.O. No., Job No., etc.

3. Work Performed by Shaw/Stone & Type Code Symbol Stamp Not Applicable Webster 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 Sect III (Vlv) 19 74 Edition, S75 Addenda, 1702 Code Case 1773

• 5. (a) Applicable Construction Code ASME Sect III (pipe) 19 74 Edition, S75 Addenda, None Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity 2001 Edition j-2003 Addenda (c)Section XI Code Case(s)

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, BUTTERFLY, JAMESBURY ND-48859-10A N/A 1SX001A 1978 REMOVED YES 36" VALVE, BUTTERFLY, CRANE 1SX001A INSTALLED YES D9136 N/A 2010 36" NUCLEAR Cat ID 1437709-1 ROD, THREADED, NOVA TRACE# 4A42 CAT ID 37108-1 2010 INSTALLED NO N/A 1-1/2-8 MACHINE HT# 3007988 NUT, HEAVY HEX, NOVA TRACE# E672 CAT ID 35845-1 2002 INSTALLED NO N/A 1-1/2-8 MACHINE HT# 8099725 FIELD WELD #1 Pipe Spool (Between Valve SHAW SX-6-16 N/A 1 SX01 BA-36 2010 INSTALLED NO 1 SX001 A & FW-4453) S/N 7177

7. Description of Work INSTALLED NEW 36" BUTTERFLY VALVE - INSTALLED NEW THREADED ROD AND NUTS TO REPLACE THE BODY BOUND STUDS IN REPLACED VALVE - ALL OTHER STUDS/NUTS REUSED. FIELD WELD ADDED ON LINE# 1SX01BA-36 BETWEEN VALVE 1SX001A & FW-4453

8. Test Conducted: Hydrostatic q Pneumatic q Nominal Operating Pressure R Exempt q Other q Pressure 30 _ psi Test Temp. 68 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 01251724-01 Applicable Manufacturers Data Reports to be attached PIPE SPOOL WAS NOT REPLACED 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 l_____ -. Date G ' ZJ , 20 10 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 o f Ha ord CT have i pe ed the components described in this Owner's Report during the period to G , 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: '? , 20 10 ov --

FORM NIS-2 SUPPLEMENTAL SHEET

• CORRECTED 1-11-12 0.1,

1. Owner Exelon Nuclear Date 4-24-10 Name 4300 Winfield Road, Warrenvilte, IL Sheet 2 of 2 Address

2. Plant Byron Nuclear Power Station Unit 1 Name 4450 N. German Church Road, Byron, IL Work Order No. 01251724-01 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

4. Identification of System SX - ESSENTIAL SERVICE WATER

• 5. (a) Applicable Construction Code ASME Sect III (Vlv) 19 74 Edition, S75 Addenda, 1702 Code Case 1773

• 5. (a) Applicable Construction Code ASME Sect III (pipe) 19 74 Edition, S75 Addenda, None Code Case (b) Applicable Edition of Section XI Used for Repair/Replacement Activity 2001 Edition / 2003 Addenda (c)Section XI Code Case(s) 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 NUT, HEAVY NOVA 1SX001A NO TRACE# NKL N/A 2001 REMOVED HEX, MACHINE NUT, HEAVY NOVA TRACE#RH58 N/A 1 SX001 A 1997 REMOVED NO HEX, MACHINE ROD, NOVA HP36, HP37, N/A 1SXO01A 1984 REMOVED NO THREADED, MACHINE H P34 ROD, NOVA TRACE#KNM N/A 1SX001A 1998 REMOVED NO THREADED, MACHINE ROD, NOVA NO TRACE#E250 N/A 1SX001A 2002 REMOVED THREADED, MACHINE ROD, NOVA TRACE#KVG N/A 1SXOO1A 1998 REMOVED NO THREADED, MACHINE (Final)