ML090260079

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Inservice Inspection Report for Interval 3, Period 1, (B2R14), Section 3.0 Through Section 4.0
ML090260079
Person / Time
Site: Byron Constellation icon.png
Issue date: 01/22/2009
From: Hoots D M
Exelon Generation Co, Exelon Nuclear
To:
Office of Nuclear Reactor Regulation
Shared Package
ML090260072 List:
References
1.10.0101, BYRON 2009-0005
Download: ML090260079 (57)
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Text

SECTION 3.0 BYRON STATION UNIT 2 - 3RD INTERVAL ASME SECTION XI EXANllNATlON STATUS REPORT Category B-A Non-Deferred Exams 81.30 1 1 0 1 1 1 0 1 0 100.00% 100.00%

100.000/0 100.00% E31.40 1 1 0 0 1 1 0 1 0 100.00%

0.00% 0.00% 0.00% Totals: 2 2 0 1 1 1 0 1 0 100.00% 50.00% 50.00740 50.00% Categow 8-A Deferred Exams B1 .I 1 3 3 NIA 3 NIA NIA 0 NIA 0 100.00%

100.OOO/o 100.00% 108.00%

81.21 2 2 NIA 1 NIA NIA 0 NIA 0 100.00% 50.00% 50.00% 50.00%

Totals: 5 5 NA 4 NIA NJA 0 NIA 0 100.00% 80.00%

80.00740 880.0% 1. (81.11 & 81.21) Examination completion exceeds 50.00% for 1 Period and 75.00% for this 2& Period. The examinations were performed at the beginning of the Inspection Intewal as allowed by Relief Request 13R-01. Category B-B Non-Deferred Exams 82.1 1 2 2 0 0 1 1 0 1 0 100.00%

0.00% 0.00% 0.00% 82.1 2 2 2 0 0 1 1 0 1 0 1 00.00% O.OOO/o 0.00% 0.000/0 82.40 4 1 0 1 1 1 0 1 0 25.00% 100.0O0/o 100.00% 100.00%

Totals: 8 5 1 1 2 2 0 2 0 62.50% 20.00% 20.00% 20.00% I. (B2.40) Per Examination Category 8-8, Note 1, examinations may be limited to one vessel among a group of vessels performing a similar function.

Category B-D Non-Deferred Exams 83.1 10 6 6 1 1 3 2 0 3 0 100.00% 16.67% 16.67% 16.67%

83.1 20 6 6 1 1 3 2 0 3 0 100.00% 16.67%

16.67% 16.67% B3.140 8 8 2 4 4 0 0 2 0 100.00% 50.00% 50.00%

5CB.OO0/o Totals: 20 20 4 6 10 4 0 9 0 100.00% 30.00% 30.00% 30.00%

1. (83.120 & 83.140) Per 10 CFR 50.55a(b)(2)(xxi)(A), Table IWB-2500-1 examination requirements, the provisions of Table IWB-2500-1, Examination Category 8-D, Item Numbers 83.120 and 83.140 in the 1998 Edition must be applied when using the 1999 Addenda through the latest edition and addenda. Category 8-D Deferred Exams 83.W 8 8 N/A 8 NIA NIA 0 NIA 0 100.00%

100.00% 100.00% 106.00%

83.1 00 8 8 N/A 8 NIA NIA 0 NIA 0 100.00% 100.00% 100.00% 1 00.00% - Tatats: 16 16 NIA 16 UIA NIA 0 NIA 0 100.00% 100.00% 1 00.00% 100.00% 1. (83.100) This Item Number requires a visual examination with enhanced magnification in lieu of volumetric examination, as allowed by Code Case N-648-1. Section 3.0 Page 1 of 7 2, (B3.W & 83.100) Per Examination Category B-D, Note 5, for PWR's in the second and successive inspection intervals, these examinations may be deferred to the end of the interval provided no repairlreplacement activities have been performed on the examination item, and no flaws or relevant conditions requiring successive inspections in accordance with IWB-2420(b) are contained in the examination item. 3. (83.90 & 83.100) Examination completion exceeds 50.00% for 1 Period and 75.00°/~ for this 2Rd Period. The examination were performed at the beginning of the lnspection Interval as allowed by Relief Request 13R-01. Catflgory i3-G-1 Deferred Exams 86.10 3 3 NIA 3 NIA NIA 0 NIA 0 100.00% 100.00% 100.00% 100.00%

86.20 3 3 N/A 3 NIA NIA 0 NIA 0 100.00% 100.00% 100.00%

1 00.00% 86.40 1 1 NIA 0 NIA NIA 0 NIA 0 1 00.00% 0.00% 0.00% 0.00%

86.50 3 3 N/A 0 NIA NIA 0 NIA 0 1 00.0O0/o 0.00% O.OO"/o 0.00% B6.170 1 1 N/A 0 NIA NIA 0 NIA 0 100.00% 0.00%

0.00% 0.00% 86.1 80 4 1 NIA 0 N/A NIA 0 NIA 0 0.00% 0.000/0 0.00% 25.00% 86.190 4 0 N/A 0 NIA NIA 0 NIA 0 0.0O0/o 0.00% 0.0O0/o 0.00% B6.210 8 2 NIA 0 NIA NIA 0 NIA 0 25.00% 0.00% O.0O0/o 0. DO"/o 86.220 8 0 NIA 0 NIA NIA 0 NIA 0 0.00% 0.000/0 0.00% 0.00% 86.230 8 0 NIA 0 NIA NIA 0 NIA 0 O.0O0/o 0.00% O.0O0/o 0.00% f otals: 43 14 WA 6 WA WA 0 N/A 0 32.56% 42.86% 42.86%

42,86% 1. (B6.10 & 86.20 & B6.50) Single components representing one third of the 54 Reactor Vessel Closure Head Nuts, Closure Studs, and Closure Washers, Bushings. The examinat~ons were performed at the beginning of the lnspection Interval as allowed by Relief Request 13R-01. 2. (B6.40) A single component representing all of the 54 Reactor Vessel Threads in Flange to be examined.

3. (B6.170) A single component represents the five sets of CETC column nuts. 4. (86.180) Four components are tracked in the database, each representing one of the 24 Bolts on one of the four Reactor Coolant Pumps (96 total) as reported in the IS1 Program Plan. The volumetric examination of these components is limited to only one of the pumps per Examination Category B-G-1 , Note 3 and Examination Category 8-L-2, Note 1. Examination is required only once per inspection interval.
5. (86.190) Four components are tracked in the database, each representing all 24 associated Flange Surfaces and Nuts, Bushings, and Washers for one of the four Reactor Coolant Pumps (96 total) as reported in the IS1 Program Plan. The visual examination of these components is limited to only one of the pumps per Examination Category 8-6-1, Note 3 and Examination Category B-L-2, Note 1. Also, per Examination Category B-G-1, Note 4 and Examination Category E3-L-2, Note 2, examination is required only when a pump is disassembled for maintenance, repair, or volumetric examination or bolting is removed. Examination is required only once per inspection interval.
6. (B6.210) Eight components are? tracked in the database, each representing all of the Bolts and associated Nuts, Bushings, and Washers and Flange Surfaces on one of the eight Reactor Coolant Valves as reported in the IS1 Program Plan. The volumetric examination of these components is limited to only one of the valves per Examination Category B-G-1, Note 3 and Examination Category B-M-2, Note 3. Examination is required only once per inspection interval.

Section 3.0 Page 2 of 7"

7. (86.220 & B6.230) Eight components are tracked in the database, each representing all of the Bolts and associated Nuts, Bushings, and Washers and Flange Surfaces on one of the eight Reactor Coolant Valves as reported in the IS1 Program Plan. The visual examination of these components is limited to only one of the valves per Examination Category B-G-1, Note 3 and Examination Category 6-M-2, Note 3. Also, per Examination Category 6-G-I, Note 4 and Examination Category 6-M-2, Note 2, examination is required only when a valve is disassembled for maintenance, repair, or volumetric examination or bolting is removed. Examination is required only once per inspection interval.

Catwory 8-64? Deferred Exams B7. I0 2 1 NIA 0 NIA NIA 0 NIA 0 50.00% 0.00%

O.0O0h 0.00% 87.20 1 0 NIA 0 NIA NIA 0 NIA 0 0.00% 0.00% 0.00% 0.00% 87.30 4 4 NIA 2 N/A N/A 0 NIA 0 100.00% 50.00%

50.000/0 50.00% 67.50 20 (I NIA 3 NIA NIA 0 NIA 0 20.00% 75.00% 75.00% 75.OO0/o 87.60 4 0 NIA 0 NIA NIA 0 NIA 0 0.00% 0.00% 0.00% 0.00%

87.70 1 NfA 1 N/ A N/A 0 NIA 0 3.85% 100.00% 100.00% 100.00%

26 - Totals: 57 10 NIA 6 NIA NIA 0 NIA 0 17.54% 60.00%

60.00% 60.00% 1. (87.10) Two components representing the CETC and RVLlS Clamp Bolts and associated Nuts as reported in the IS1 Program Plan. 2. (87.20) A single component representing all 16 Pressurizer Manway Bolts and associated Nuts as reported in the IS1 Program Plan.

3. (B7.30) Four components are tracked in the database, each representing all 32 Bolts and associated Nuts for both Manways on each of the four Steam Generator (128 total) as reported in the IS1 Program Plan.
4. (137.50) Per Examination Category B-G-2, Note 3, examination is required only when a bolted connection is disassembled or bolting is removed.

Also, per Examination Category 8-(3-2, Note 3, examinations are limited to at least one bolted connection within each group of bolted connections that are simitar in design, size, function, and service. Examination is required only once per inspection interval within each bolted connection group. 5. (87.60) Four components are tracked in the database, each representing all 36 Bolts and associated Nuts for one of the four Reactor Coolant Pumps (144 total) as reported in the IS1 Program Plan.

Per Examination Category B-G-2, Note 2 and Examination Category 6-L-2, Note 2, examination is required only when a pump is disassembled for maintenance, repair, or volumetric examination or bolting is removed. Also, per Examination Category 6-6-2, Note 2 and Examination Category 8-12, Note I, examinations are limited to at least one pump within each group of pump that are of the same size, design, manufacturing method, and function. Examination is required only once per inspection interval within each valve group. 6. (87.70) Per Examination Category 8-6-2, Note 2 and Examination Category B-M-2, Note 2, examination is required only when a valve is disassembled for maintenance, repair, or volumetric examination or bolting is removed. Also, per Examination Category B-G-2, Note 2 and Examination Category B-M-2, Note 3, examinations are limited to at Ileast one valve within each group of valves that are of the same size, design, manufacturing method, and function. Examination is required only once per inspection interval within each valve group.

Section 3.0 Page 3 of 7 verify that the penod~e 1Wx-2412-1 w~ll be met b Category 8-K Non-Deferred Exams BlO.10 2 2 0 0 1 1 0 1 0 1 OO.OOO/o O.OOO/o OO.oOO/o O.OOO/o 131 0.20 8 3 1 1 1 1 0 1 0 37.50% 33.33% 33.33%

33.33% - Totals: 10 5 1 1 2 2 0 2 0 50.00% 20.00% 20.00% 20.00%

I. (810.10) Per Examination Category 8-K, Note 4, for multiple vessels of similar design, function and service, only one welded attachment of only one of the multiple vessels shall be selected for examination. Conservatively, a welded attachment of each type of welded attachment of one of multiple vessels will be exam~ned.

2. (810.20) Per Examination Category E3-K, Note 5, for piping, pumps, and valves, a sample of 10% of the welded attachments associated with the component supports selected for examination under IWF-2510 shall be examined.

This requirement is conservatively interpreted to mean that 10% of the total Catqory B-L-2 Deferred Exams E312.20 4 0 NIA 0 N/A NIA 0 N/A 0 0.00% 0.00% 0.00% 0.00% Totals: 4 0 NIA 0 N1 A NIA 0 NIA 0 0.00% 0.00% 0.00%

0.00% 1. (912.20) The examination of pump casings is limited to only one of the pumps performing similar functions in the system per Examination Category B-L-2, Note 1. Also, per Examination Category B-L-2, Note 2, examination is required only when a pump is disassembled for maintenance, repair, or volumetric examination, Examination is required only once per inspection interval.

Category E3-M-2 Deferred Exams 81 2.50 37 2 NIA 2 NIA N/A 0 N/A 0 5.41 % 100.00% 100.00% 100.00%

Totals: 37 2 NIA 2 NIA WA 0 NIA 0 5.41% 100.00% 100.00% 100.00%

1. (812.50) Per Examination Category B-M-2, Note 2, examination is required only when a valve is disassembled for maintenance, repair, or volumetric examination. Also, per Examination Category 8-M-2, Note 3, examinations are limited to at least one valve within each group of valves that are of the same size, design, manufacturing method, and function. Examination is required only once per inspection interval within each valve group. Catego~y B-N-1 Non-Deferrd Exams 813.10 2 1 0 1 1 1 0 1 0 50.00% 100.00%

100.00% 10Q.00% Totals: 2 1 0 I 1 1 0 1 0 50.00% 100.00%

100.00% 1 OCb,OO% 1. (I31 3.1 0) '% Completed" exceeds 100% since the vessel interior is selected for examination once each period (three times during the interval).

Section 3.0 Page 4 of 7 er~fy that the pertod~e IWx-2412-I will be met b Category B-N-2 Deferred Exams 81 3.50 1 1 NIA 1 NIA NJA 0 NJA 0 100.OOO/o 100.OOO/o 7 00.00% 100.00% 81 3.60 -- 1 1 NiA 1 NIA N/A 0 NiA 0 1O0.0O0/o 10O.0O0/o 100.00% 100.00% - Totals: 2 2 MA 2 MA MIA 0 NIA 0 100.00%

1 00.00% 100.00% 100.00% 1. (813.50 & 813.N) Examination completion exceeds 50.00% for 1 Period and 75.00% for this 2nd Period. The examination were performed at the beginning of the Inspection Interval as allowed by Relief Request 13R-01. Category B-N-3 Deferred Exams 813.70 1 1 NIA 1 N/A NIA 0 N/A 0 1 00.00% 1 00.00% 100.00% 1 00.00%

Totals: 1 1 WA 1 NIA WA 0 WA 0 100.00% 100.00%

100.00% 1 08.00% 1. (813.70) Examination completion exceeds 50.00% for 1 Period and 75.00% for this 2nd Period. The examination were performed at the beginning of the lnspection Interval as allowed by Relief Request l3R-01. Category 8-0 Deferred Exams E314.10 5 5 NIA 2 NIA N/A 0 NJA 0 100.00% 40.00% 40.00% 40.00%

Totals: 5 5 NIA 2 NIA WA 0 WA 0 100.00% 40.00%

40.00°/0 40,0O0A 1. (B14.10) lOYo of the 45 CRD Housings (as reported in the IS1 Program Plan) are required to be examined each interval per this item Number.

These 5 components represent that 1 Ooh population.

Category B-P Non-Deferrd Exams 815.10 1 1 NIA 2 N/A NJA 0 NIA 0 1 00.00% 200.00°/0 0.00% 0.00% Totals: I 1 W 2 WA MA 0 WA 0 100.00%

200.00°/0 O.OOO/~ 0.QOYo 1. (81 5.10) '"6 Completed" exceeds 100% since Class 1 pressure tests are performed each refueling outage.

2. (815.10) One component representing the five systems in Class 1 as reported in the iSi Program Plan.

Category 6-A Non-Deferred Exams C1.10 14 4 I 1 2 1 0 2 0 28.57% 25.00% 25.00% 25.80%

C1.20 6 2 0 0 1 1 0 1 0 33.33% 0.00%

0.00% 0.00% C1.30 4 1 0 1 1 1 0 1 0 25.00% 100.00% 100.00% 100.00%

Totals: 24 7 2 2 3 2 0 3 0 29.1 7% 28.57% 28.57%

28.57% 1, (C1 .I0 CZ C1.20) Per Examination Category C-A, Note 3, in the case of multiple vessels of similar design, size, and service, the required examinations may be limited to one vessel or distributed among the vessels. Section 3.0 Page 5 of 7 Category C-B Mon-Deferred Exams C2.21 16 7 2 1 3 3 0 4 0 43.75% 14.29% 14.29% 14.29%

C2.22 8 1 0 1 1 1 0 1 0 12.50% 1 00.00% 1 00.00% 1 00.00% - Totals: 24 8 2 2 4 2 0 4 0 33.33% 25.00% 25.00% 25.00%

1. (C2.21 & C2.22) Per Examination Category C-B, Note 4, in the case of multiple vessels of similar design, size, and service, the required examinations may be limited to one vessel or distributed among the vessels. 2. (C2.22) Due to the unique configuration of the heat exchanger nozzle reinforcing pads being on the internal surface, the nozzle inner radius section is inaccessible for examination. (See Relief Request l3R-04). Category C-C Non-Deferrd Exams C3.10 2 1 0 0 1 1 0 1 0 50.00% 0.00% 0.00% 0.00%

C3.20 76 8 2 1 4 3 0 5 0 10.53% 12.50% 12.50%

12.50% C3.30 20 2 0 1 1 1 0 1 0 1 0.00% 50.00% 50.00% 50.00% - Totals: 98 11 2 2 5 4 0 6 0 11.22% 18.1 8% 18.1 870 18.1 8% 1. (C3.10) Per Examination Category C-C, Note 4, for multiple vessels of similar design, function, and service, only one welded attachment of only one of the muitiple vessels shall be selected for examination. Conservatively, a welded attachment of each type of welded attachment of one of multiple vessels will be examined.

2. (C3.20 & C3.30) Per Examination Category C-C, Note 5, for piping, pumps, and valves, a sample of 10% of the welded attachments associated with the component suppofls selected for examination under IWF-2510 shall be examined.

This requirement is conservatively interpreted to mean that 10% af the total Class 2 welded attachments shall be examined.

The interpretation is consistent with the previous NRC condition on the use of Code Case N-509. Category C-H Non-Deferred Exams C7.10 -- 29 29 NIA 29 NIA NIA 0 N/A 0 100.00% 1 00.00% 0.00% O.OOO/o Totals: 29 29 Nln 29 NIA NIA 0 NIA 0 100.00% 100.00% 0.00% 0.80%

1. (C7.10) "Oh Completed" exceeds 100% since Class 2 pressure tests are performed each inspection period. 2. fC7.10) Twenty-nine components representing the twenty-nine systems in Class 2 as reported in the IS! Program Plan.

Section 3.0 Page 6 of 7

  1. Exams Completed

% Exams Completed Min Per1 Max Min Per 2 Max Per 3 70 Selected Period 1 Period 2 Period 3 Category F-A Non-Deferred Exams Fl .I0 467 119 20 31 59 29 0 58 0 25.48% 26.05% 26.05%

26.05% F1.20 659 109 18 25 54 30 0 56 0 16.54% 22.94%

22.94% 22.94% F1.30 370 4 1 7 9 20 12 0 21 0 1 1.08% 21.95% 21.95% 21.95% F1.40 70 32 6 6 16 10 0 18 0 45.71 % 18.75% 18.75% 18.75% Totals: 1566 301 49 71 150 80 0 154 0 19.22% 23.59% 23.59% 23.59%

"1 (F1.40) Per Examination Category F-A, Note 3, for multiple components other than piping within a system of similar design, function, and service, the supports of only one of the multiple components are required to be examined.

2. (F1.30 & F1.40) Class 3 components included in table. IWF-2410 completion percentage applies to entire Examination Category.

Category R-A Non-Socket Welds 1 242 61 10 23 30 8 0 22 0 25.21% 37.70% 37.70%

37.70% 2 130 39 7 20 19 0 0 9 0 30.00% 51.28% 51.28%

51.28% 4 1 364 1 40 23 36 70 34 0 69 0 10.26% 25.71 % 25.71 % 25.71 % 5 --- 7 1 9 2 7 4 -2 0 - 1 0 12.68% 77.78% 77.78% 77.78% - Totals: 1807 249 40 86 124 39 0 1 00 0 13.78% 34.54% 34.54% 34.54%

I. (BER Welds) The d of Camp and ## Selected include all BER welds which have been integrated into the RISl Program and are selected in accordance with the Risk informed BER methodology.

Category R-A Socket Welds 2 84 26 NJA 52 NIA NIA 0 NIA 0 30.95% 200.00% 200.00% 200.00% 4 172 2 1 NIA 42 N/A N/A 0 NI A 0 12.21% 200.00% 200.00% 200.00%

5 334 32 NIA 64 NIA N/A 0 N/A 0 9.58% 20O.0Ooh 200.00% 200.00%

P Totals: 590 79 A 158 WA MA 0 N/ A 0 1 3.39% 200.00% 200.000/0 200.000/0

1. Socket welds for Examination Category R-A piping structural elements are listed separately from butt welds because socket welds are selected for examination in 'bach" refueling outage. Including socket welds in the # of Comp, Total Selected, and # Selected fields with the butt welds would misrepresent the O/o completed distributions for the remainder of the Examination Category. The

"% Completed" exceeds 100% since they are examined each outage per ASME Gode Case N-578-1, Table 1, footnote 12. Section 3.0 Page 7 of 7 SECTION 4.0 Byron Station Unit 2 B2R14 IS1 Outage Report FORM HIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Codla Rules (Page 1 of 48) 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:

2 4. Owner Certificate Of Authoritstion (if required):

N/A 5. Commercial Service Date: 08122187 6. National Board Number for Unit: N-200 7. Components Inspected: Auxiliary Feedwater System (AF) Note (1 1: Baseline Examination Note (2): Snubber emmined as a Component Support Component or Appurtenance 2AF02DC- 412AF05002X 2AF02DC- 4/2AF05003V 2AF02EA- 412AF06001 R 2AF02EA- 412AF06044G 2FW06AA- 412AF06035R 2FW87BA- 3/2FW 14001 R Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1 f size is 8 112 in. x 13 in., (2) information in items f through 6 of this reporl is included on each sheet, and (3) each shed is number& and the numkr of sheets is rworded at the top of this form. Manufacturer or Installer HUNTER HUNTER HUNTER HUNTER HUNTER HUNTER State or province NO. N/A N/A N/A NIA NIA N/A Manufacturer Or lnstaller Serial No. HUNTER HUNTER HUNTER HUNTER HUNTER HUNTER National Board No. N/A N/A NIA N/A N/A N/A Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-'I OWNERS REPORT FOR IINSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 2 of 48) 1. Owner: Exelon Generation Company,(EGC,LLC), 4300 Winfield Road, Warrenville, Illinois 60555 (Name and Address d Owner) 2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant) 3. Plant Unit: 2 4. Owner Certificate Of Authorization (if required):

N/A 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Auxiliary Feedwater System (AF) Note (1): Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2FW87BB- 3/2FW12001 S Nate: Suppiemental sheets in form of lists, sketches, or drawings may be used. provided ((1) size is 8 ti2 in. x It in., (2) information in items 1 through 6 of this report is inciudd on each sheet, and (3) each sheet is numbered and the number af sheets is record& at the tap of this form. Manufacturer or Installer Pacific Scientific National Board No. NA Manufacturer Or lnsta'ler Serial No. 13336 State or province NO. NA Byron Station Unlt 2 B2R14 IS1 Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 3 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

NJA 5. Commercial Service Date: 08122187 6. National Board Number for Unit:

N-200 7. Components Inspected: Containment Spray System (CS) Note (1): Baseline Examination Mote (2): Snubbr esmined as a Component Support Component or Appurtenance 2-CS-2-1 2-CS-2-2 2-CS-2-3 2-CS-2-4 2-CS-2-5 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 112 in, x t I in., (2) infomation in items 1 through 6 of this report, is includd on each sheet, and (3) each sheet is number& and the number of sheets is record& at the top of this form. Manufacturer or Installer Hunter Corporation Hunter Corporation Hunter Corporation Hunter Corporation Hunter Corporation Manufacturer Or lnstalter Serial No.

NlA NIA NJA NIA NIA State or province NO. NIA NIA NIA NIA NIA National Board No. NIA NIA NI A NIA NIA Byron Station Unit 2 B2R14 IS1 Outage Report FORM NlS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Asquit& by the Provisions of the ASME Code Rules (Page 4 of 48) 1. Owner: Exelon Generation Com pany,(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: 2 4. Owner Certificate Of Authoritation (if required):

N/A 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit:

N-200 7. Components Inspected: Containment Spray System (CS) Note (I): Baseline Examination Note (2): Snubber examined as a Component Support Note: Supplemental sheets in fom of lists, sketches, or drawings may br5. used, provided (1) size is 8 $12 in. x 11 in., (2) infamation in items 1 through 6 of this report is ineludd on each sheet, and (3) each sheet is numbered and the numb$ of sheets is re~ordrJd at the top of this form. National Board No. NA NA Component or Appurtenance 2CS02AA- 10/2CS03A012S 2CS02AB- 1 Of2CS03B018S Manufacturer or Installer Pacific Scientific Pacific Scientific Manufacturer Or 'nstalier Serial No. 251 77 91 78 State or province NO. NA NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provislons of the ASME Code Rules (Page 5 of 48) 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 d Plant) 3. Plant Unit:

2 4. Owner Certificate Of Authorization (if required):

N/A 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit:

N-200 7. Components Inspected:

Chemical & Volume Control System (CV) Note (1): Baseline Emmination Note (2): Snubber examined as a Component Support Component or Appurtenance 2-CV-2-1 2-CV-2-10 2-CV-2-2 2-CV-2-3 2-CV-2-4 2-CV-2-5 Note: Supplemental sheets in form of lists. sketches, or drawings may be used, provided (1) size rs 8 112 in. x 11 in., (2) information in items f through 6 of this report is incfuded on each sheet, and (3) each sheet is numbered and the number of sheets is record& at the top of this form. Computer GenemtM Form Hunter Corporation I I I I I J Manufacturer or Installer Hunter Corporation Hunter Corporation Hunter Corporation Hunter Corporation Hunter Corporation Hunter Corporation Hunter Corporation Manufacturer Or lnstalier Serial No. N/A N/A N/A N/A NIA N/A State or province NO. N/A N/A N/A N/A N/A N/A National Board No. N/A N/A N/A N/A N/A N/A Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE tNSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 6 of 48) - - --- 1. Owner: Exelon Generation Company,(EGC,LLC), 4300 Winfield Road, Warrenville, Illinois 60555 (Name and Address ot Owner) 2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant) 3. Plant Unit:

2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08122187 6. National Board Number for Unit: N-200 7. Components Inspected:

Chemical & Volume Control System (CV) Note (1): Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2CVA3AA- 212CV11004X 2CVA3AA- 212CV11005X 2CVA7AA- 212CV25011 X 2CVA7AA- 212CV25013X 2CVA7AA- 212CV25014X Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (If size is 8 112 in, x If in., (2) information in items 1 through 6 of this report ts included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. Ccmputar Generaw Form Manufacturer or Installer HUNTER HUNTER HUNTER HUNTER HUNTER Manufacturer Or lnstalfer Serial No. HUNTER HUNTER HUNTER HUNTER HUNTER State or province NO. NIA NIA NIA MIA NIA National Board No. NIA NIA NIA MIA NIA -

Byron Station Unit 2 B2R14 IS1 Outage Report FORM MIS-! OWNERS REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 7 of 48) 1. Owner: Exelon Generation Company,(EGC,LLC), 4300 Winfield Road, Warrenville, Illinois 60555 (Name and Address d Owner) 2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address d Plant) 3. Plant Unit:

2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Chemical & Volume Control System (CV) Note (I): Baseline Examination Note (2): Snubber examined as a Component Suppclrt Component or Appurtenance 2CV-01 -PA/CVPE-1 2CV08AA-41CO3 2CV08AA-4/ClO 2CV08AA-41Cll 2CV08AA-4/C15 2CV08BA-4/C25 2CV09A-4/C02 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, providd (1) size is 8 112 in. x 11 in., (2) information in items 1 through 6 of this repofl is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of &is farm. Manufacturer or Installer Pacific Pumps Hunter Corp. Hunter Corp. Hunter Corp. Hunter Corp. Hunter Corp. Manufacturer or lnstaller Serial No. 49772 2-CV-2-N5 2-CV-2-N5 2-CV-2-N5 2-CV-2-N5 2-CV-2-N5 State or Province No. NA NA NA NA NA NA National Board No. 204 NA NA NA NA NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 8 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

N/A 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Chemical & Volume Control System (CV) Note (1): Baseline Examination Note (2): Snubber examinA as a Component Support Note: Supplemental sheets in farm of lists, sketches, or drawings may be used, provided (1) size is 8 112 in. x I1 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 lop of this farm. Component or Appurtenance 2CVA3B-2NV-80 2CVA3B-2NV-81 2CVA5AA-2NV-06 2CVA5AA-2NV-07 2CVA6AA-2NV-04 2CVA6AA-2NV-05 Hunter Corp. 2-CV-1 -N5 NA NA 2CVA7AA-2NV-06 Manufacturer or Installer Hunter Corp.

Hunter Corp. Hunter Corp. Hunter Corp. Manufacturer Or Instailer Serial No. 2-CV-1 -N5 2-CV-1 -N5 2-CV-1 -N5 2-CV-1 -N5 State or province NO. NA NA NA NA National Board No. NA NA NA NA Byron Saaatisast Unit 2 B2R14 IS1 Outage Report FORMI NIS-I OWNER'S REPORT FOR INSERVICE INSPECTIONS As Rtrquired by the Provisions of the ASME Code Rules (Page 9 of 48) 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 Piant) 3. Plant Unit:

2 4. Owner Certificate Of Authoriration (if required):

NIA 5. Commercial Service Date: 08122187 6. National Board Number for Unit:

N-200 7. Components Inspected:

Chemical & Volume Control System (CV) Note (1): Baseiine Examination Note (2): Snubber examined as a Component Support Note: Supplemental sheets in form of lists, sketches, or driivvings may be used, provided (1) size is 8 1!2 in, x I1 in., (2) information in items 1 through 6 of this report is included on each sheet, and (3) each she& is numbred and the number of sheets is rworded at the top of this form. National Board No. NA NA NA NA NA NA Component or Appurtenance 2CV05CB- 612CV08006S 2CV05CB- 612CV0801OS 2CV05CB- 612CV08013S 2CV1 OCA- 312Cv03002S 2CV14EB- 212CV36004S 2CV14ED- 212CV41009-S1 f 31412CV27001 S Pacific Scientific Manufacturer or Installer Pacific Scientific Pacific Scientific Pacific Scientific Pacific Scientific Pacific Scientific Pacific Scientific Manufacturer Or Installer Serial No. 261 04 20119 1661 1 17350 101 75 2697 State or province NO. NA NA NA NA NA NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 10 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

N/A 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit:

N-200 7. Components Inspected:

Chemical & Volume Control System (CV) 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 8 112 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. Component or Appurtenance 2CV45B-2/2RY06116S 2CVA6AA- 2/2CV09026S 2CVA6AA- 2/2CV25026S 2CVA7AA- 2/2CV25016S 2CVB7BA- 312CV23012S Computer Generat& Form Manufacturer or Installer Pacific Scientific Pacific Scientific Pacific Scientific Pacific Scientific Pacific Scientific National Board No. NA NA NA NA NA Manufacturer or Installer Serial No. 4065 4099 16653 2071 1 18358 State or Province No. NA NA NA NA NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM MIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 11 of 48) 1. Owner: Exeion Generation Company,(EGC,LLC), 4300 Winfield Road, Warrenville, Illinois 60555 (Name and Address ot Owner) 2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant) 3. Plant Unit: 2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08122187 6. National Board Number for Unit: N-200 7. Components Inspected: Fuel Pool Cooling System (FC) Note (t 1: Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2-FC-2-1 Note: Supplemental sheets in form of lists, sketches, or drawings may be used. provided (1) size is 8 '112 in. x 11 in., (2) information in items 1 through 6 of this report is includd on each sheet, and (3) each sheet is numberrjcf and the number of sheets is raorded at the top of this form. Manufacturer or Installer Hunter Corporation Manufacturer Or lnstatter Serial No. NIA State or province NO. NIA National Board No. NIA -

Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 12 of 48) 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:

2 4. Owner Certificate Of Authorization (if required):

N/A 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Fire Protection System (FP) Note (1): Baseline Examination Note (2): Snubber examined as a Component Support b Component or Appurtenance 2-FP-2-1 Note: Supplemental sheets in form of lists, sketches, ar drawings may be used, provided (1) size is 8 112 m. x If in., (2) information in items I 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 &is form. Manufacturer or Installer Hunter Corporation State or province NO. N/A Manufacturer Or installer Serial No. N/A National Board No. N/A Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 13 of 48) 1. Owner: Exelon Generation Company,(EGC,LLC), 4300 Winfield Road, Warrenville, Illinois 60555 (Name and Address af Owner) 2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant) 3. Plant Unit: 2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Feedwater System (FW) 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 8 112 in, x 11 in.. (2) infomation 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 recordd at the top of Bis form. National Board No. NA NA NA NA NA NA Component or Appurtenance 2FW03DA-l6/C15 2FW03DA-161C16 2FW03DA-161C19 2FW03DA-16IC20 2FW03DA-l61C21 2FW03DA-l61C22 2FW87CA-6IC29 Manufacturer or Installer Hunter Corp. Hunter Corp.

Hunter Corp. Hunter Corp. Hunter Corp.

Hunter Corp. Manufacturer or Installer Serial No. 2-FW-1 -N5 2-FW-1 -N5 2-FW-1 -N5 2-FW-1 -N5 2-FW-1 -N5 2-FW-1 -N5 State or Province No. NA NA NA NA NA NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM MIS-1 OWNER" SREPQRT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 14 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

N/A 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Feedwater System (FW) Note (1): Baseline Examination Note (2): Snubber examined as a Component Supporl Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 112 in. x 11 in., (2) information in items 1 through 6 of this rewrt is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. L Component or Appurtenance 2FW87CD-6fC37 Computer Gemmt& Form State or province NO. NA National Board No. NA Manufacturer or Installer Hunter Corp.

Manufacturer Or Serial No. 2-FW-1 -N5 Byran Station Unit 2 B2R14 IS1 Outage Report FORM NIS-1 OWNER'S REPORT FOR INSEWVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 15 of 48) 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 Piantf 3. Plant Unit: 2 4. Owner Certificate Of Authorization (if required):

N/A 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Feedwater System (FW) Note (1): Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2FW03DA- 16/2FW02003S 2FWO3DB- 16/2FW03016S 2FW03DB- 1612FW03017S 2FW87CA- 612 FW 06002s Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 112 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 nurnber of sheets is recorded at the top of this form. Manufacturer or Installer Pacific Scientific Pacific Scientific Pacific Scientific Pacific Scientific Manufacturer or Installer Serial No. 5035 3322 4794 8704 State or Province No. NA NA NA NA National Board No. NA NA NA NA Byron Swtion Unit. 2 B2R14 IS1 Outage Report FORM NlS-1 OWNERS REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 16 of 48) - - 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:

2 4. Owner Certificate Of Authoritation (if required):

NIA 5. Commercial Service Date: 08I22187 6. National Board Number for Unit:

N-200 7. Components Inspected: Process Sampling System (PS) Note f 1 j: E3aseline Examination Component or Appurtenance 2-PS 1 2-PS-2-2 2-PS-2-3 2-PS-2-4 2-PS-2-5 2-PS-2-6 Note (2): Snubber examin& as a Component Support Note: Supplemental sheets in form of lists, sketches, or drawings may be used. providd if) size is 8 112 in. x I1 in., (2) information in items 1 through 6 of this report is included on each sheet, and (3) each sheet is numbred and the numhr of sheets is record& at the top of this form. Manufacturer or Installer Hunter Corporation Hunter Corporation Hunter Corporation Hunter Corporation Hunter Corporation Hunter Corporation Manufacturer or Installer Serial No. NIA NIA NIA NIA NIA NIA State or Province No. NIA NIA MIA NIA NIA NIA National Board No. NIA NIA NIA NIA NIA NIA Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-I OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 17 of 48) 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 61 010 (Name and Address of Plant) 3. Plant Unit:

2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Pressurizer (PZR) Note (1): Baseline Examination Note (2): Snubber examind as a Component Support Component or Appurtenance 2RY-01 -S/PSL-01 THRU 04 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 112 in. x 11 in., (2) information in items 1 through 6 of this report is included an each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. Computer Generat& Form Manufacturer or Installer Westinghouse Corp. State or Province No. 0-201 441 Manufacturer or Installer Serial No. 1741 National Board No. W 1 3582 Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 18 of 48) 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 oi Plant) 3. Plant Unit: 2 4. Owner Certificate OI Authorization (if required):

NIA 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Reactor Coolant System (RC)

Note (I j: Baseline Examination Note (2): Snubber examined as a Component Suppit Component or Appurtenance 2-RC-1-1 2-RC-2-1 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, providd (1) size is 8 112 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. Manufacturer or Installer Hunter Corporation Hunter Corporation Manufacturer or Installer Serial No. NIA NIA State or Province No. NIA NIA National Board No. NIA NIA Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-1 OWNER'S REPQRT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 19 of 48) 1. Owner: Exeion 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: 2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08122187 6. National Board Number for Unit:

N-200 7. Components Inspected:

Reactor Coolant System (RC) Note (1): Baseline Examination Component or Appurtenance 2RC16AA- 2/2cv12002x 2RC22AC 11212RC 1 8006X 2RC22AD 1 1212 RC 1 9009X 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 8 712 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 record& at the top of this form.

Manufacturer or Installer HUNTER HUNTER HUNTER Computer Generated Form Manufacturer Or installer Serial No. HUNTER HUNTER HUNTER State or province NO. NIA NIA N/A National Board No. NIA NIA N/A ..

Byron Station Unit 2 B2R14 IS1 Outage Report FORM HIS-1 OWNER'S REPORT FQF? INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 20 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08122187 6. National Board Number for Unit: N-200 7. Components Inspected: Reactor Coolant System (RC) Mote (7): Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2RC01AA-291J06 2RC03AA-27.51J02A 2RC03AA-27.51J04 2RC04AA-121J03 2RC04AA- 1 21J04 2RC04AA-121J05 2RC04AA- 1 21J06 Mote: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 1/2 in. x f l in., (2) infomation 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. 2RC05AB-6fJ03 Manufacturer or Installer Hunter Corp.

Hunter Corp. Hunter Corp.

Hunter Corp. Hunter Corp. Hunter Corp. National Board No. NA NA NA NA NA NA Manufacturer or Installer Serial No. 2-RC-1 -N5 2-RC-1 -N5 2-RC-1 -N5 2-RC-1 -N5 2-RC-1 -N5 2-RC-1 -N5 State or Province No. NA NA NA NA NA NA Byron Station Unit 2 B2R14 IS! Outage Report FORM HIS-1 OWNER'S REPORT FOR INSERVlCE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 21 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected: Reactor Coolant System (RC) Note (1): Baseline Examination Note (2): Snubber examined as a Component Support C Component or Appurtenance 2RC05AB-6lJ05 2RC13M-2NV-01 2RC13AA-2NV-02 2RC13M-2NV-03 2RC13AA-2NV-04 2RC13M-2NV-05 2RC13AB-2NV-01 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 112 in. x if in., (2) information in items 1 through 6 of this r*?poft is included on each sheet, arid (3) each sheet is numberd and the number of sheets is recorded at the top of this form. 2RC14AA-m-01 A Manufacturer or Installer Hunter Corp. Hunter Corp.

Hunter Corp. Hunter Corp.

Hunter Corp.

Hunter Corp. State or Province No. NA NA NA NA NA NA Manufacturer or Installer Serial No. 2-RC-1 -N5 2-RC-1 -N5 2-RC-1 -N5 2-RC-1 -N5 2-RC-1 -N5 2-RC-1 -N5 National Board No. NA NA NA NA NA NA Byron Sbtion Unit 2 B2R14 IS1 Outage Report FORM HIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS Aa Required by the Provisions of the ASME Code Rules (Page 22 of 48) 1. Owner: Exelon Generation Company,(EGC,LLC), 4300 Winfield Road, Warrenville, Illinois 60555 (Name and Address at Owner) 2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant) 3. Plant Unit:

2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08122187 6. National Board Number for Unit: N-200 7. Components Inspected: Reactor Coolant System (RC) Mote (1): Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2RC14AA-2NV-01 C 2RC14AA-2NV-02 2RC14AA-2NV-03 2RC14AA-2NV-04 2RC14AA-2NV-05 2RC14AA-2NV-06

2RC 1 4AA-2NV-07 Nate: Supplemental sheets in form of lists, sketches, or drawings may be used, provided it) size is 8 112 in. x 11 in., (2) information in items I 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. Manufacturer or Installer Hunter Corp. Hunter Corp. Hunter Corp.

Hunter Corp. Hunter Corp. Hunter Corp.

National Board No. NA NA NA NA NA NA Manufacturer Or installer Serial No. 2-RC-1 -N5 2-RC-1 -N5 2-RC-1 -N5 2-RC-1 -N5 2-RC-1 -N5 2-RC-1 -N5 State or province NO. NA NA NA NA NA NA Byrsn Station Unit 2 B2R14 IS1 Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS Bs Required by the Provisions of the ASME Code Rules (Page 23 of 48) 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:

2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Reactor Coolant System (RC) Note (7): Basetine Examination Note (2): Snubber examined as a Component Supwrt Component or Appurtenance 2RC16AA-2/W-04 2RC16AA-2NV-05 2RC16AA-2NV-06 2RC16AA-2NV-07 2RC16AB-2NV-04 2RC16AB-2NV-05 2RC16AC-2NV-08 Note: Supplemental sheets in form of lists. sketches, or drawings may be used, provided (1) size is 8 112 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. 2RC22AC-1.5NV-01 Manufacturer or Installer Hunter Corp. Hunter Corp. Hunter Corp. Hunter Corp. Hunter Corp. Hunter Corp. National Board No. NA NA NA NA NA NA Manufacturer Or installer Serial No. 2-RC-1-N5 2-RC-1-N5 2-RC-1 -N5 2-RC-1 -N5 2-RC-1 -N5 2-RC-1 -N5 State or province NO. NA NA NA NA NA NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM HIS-1 OWNERS REPORT FOR INSERVICE

[NSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 24 of 48) 1. Owner: Exelon Generation Company,(EGC,LLC), 4309 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: 2 4. Owner Certificate Of Authoriration (if required):

NIA 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected: Reactor Coolant System (RC) Note (1): Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2RC22AD-1.5NV-01 2RC22AD-1.5NV-08 2RC26A-2NV-01 2RC26A-2NV-02 2RC30AA-1.5NV-01 2RC37A-31J02 2RC37A-31J03 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (I) size is 8 112 in. x 1 I 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 fon. Manufacturer or Installer Hunter Corp. Hunter Corp.

Hunter Corp. Hunter Corp. Hunter Corp. Hunter Corp.

Manufacturer or Installer Serial No. 2-RC-1 -N5 2-RC-1 -N5 2-RC-1 -N5 2-RC-1-N5 2-RC-1 -N5 2-RC-1 -N5 State or Province No. NA NA NA NA NA NA National Board No. NA - NA NA NA NA NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-1 QWMER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 25 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Reactor Coolant System (RC) Component or Manufacturer State or National Manufacturer Appurtenance or Installer Or lnstailer Province NO. Serial No. Board No. 2RCO1 BA- Boeing 27 NA NA 2N2RC01 BA-A 2RCO1 BA- Boeing 35 NA NA 2A12RC01 BA-B 2RC01 BB- Boeing 9 NA NA 2B12RC01 BB-A 2RC01 BB- Boeing 15 NA NA 2B12RC01 BB-B 2RCO1 BC- Boeing 19 NA NA 2C12RC01 BC-A 2RCO1 BC- Boeing 7 NA NA 2C12RCOl BC-B 2C12RC01 BD-A Pacific Scientific 0361 5833-001 Note (I): 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 li2 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 fop of this form.

Byron Statietn Unit 2 B2R14 IS1 Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS Ag Required by the Provisions of the ASME Code Rules (Page 26 of 48) 1. Owner: Exeion 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: 2 4. Owner Certificate Of Authorization (if required):

N/A 5. Commercial Service Date: 08122187 6. National Board Number for Unit: N-200 7. Components Inspected:

Reactor Coolant System (RC)

Note (1 ): Baseline Examination Note (2): Snubber examined as a Camponent Suppart I Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 112 in. x i 1 in., (2) infomation 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. Cornpuler Generrrtcd Form 1.5/2RC16012S Pacific Scientific Pacific Scientific Component or Appurtenance 2RC14AB- 212CV15053S 2RC14AD- 2/2cv25023s 2RC16AC- 212CV13031 S 2RC22AA- 1.512RC16001 S 2RC22AA- 1.5/2RC16002S 2RC22AA- 1.5/2RC16011 S Pacific Scientific Manufacturer or Installer Pacific Scientific Pacific Scientific Pacific Scientific Pacific Scientific Lisega Pacific Scientific Manufacturer Or installer Serial No. 12128 8068 3064 12848 0361 5873-01 4 2928 State or province NO. NA NA NA NA NA NA National Board No. NA NA NA NA NA NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM MIS-I OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASNIE Code Rules (Page 27 of 48) 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:

2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08122187 6. National Board Number for Unit:

N-200 7. Components Inspected: Reactor Coolant System (RC)

Mote (1 ): Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2RC48BC- 11212RC90C015S 2RC48BD- 11212RC90D022S Note: Supplemental sheets in fonn of lists. sketches; or drawings may be used, provided (1) size is 8 I12 in. x 1 I in., (2) information in items 1 through 6 of this report is inciuda on each sheet, and (3) each sheet is numbered and the numbr of sheets is rmorded at the top of this form. Manufacturer or Installer Pacific Scientific Pacific Scientific Manufacturer Or installer Serial No. 21261 2808 State or province NO. NA NA National Board No. NA NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM HIS-1 OWNER'S REPORT FOR INSEWVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 28 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Residual Heat Removal System (RH) Note (1): Baseline Examination Note (2): Snubber exam~ned as a Component Support Component or Appurtenance 2-RH-2-1 2-RH-2-2 2-RH-2-3 2-RH-2-4 2-RH-2-5 2-RH-2-6 Note: Supplementaf sheets in form of lists, sketches.

or drawings may be used, provided (1) size is 8 112 in. x 11 in., (2) information in items I through 6 of this report is included on each sheet, and (3) each sheet is numbered and the number of sheets is re~orded at the top of this form. Manufacturer or Installer Hunter Corporation Hunter Corporation Hunter Corporation Hunter Corporation Hunter Corporation Hunter Corporation Manufacturer or Installer Serial No. N/A N/A N/A N/A N/A N/A State or Province No. N/A N/A N/A NIA N/A NIA National Board No. NIA NIA N/A N/A N/A N/A -

Byron Station Unit 2 B2R14 IS1 Outage Report FORM MlS-1 OWNERS REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 29 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08/22187 6. National Board Number for Unit: N-200 7. Components Inspected: Residual Heat Removal System (RH) Note (1): Baseline Examination Note (2): Snubber examined as a Component Suppsrt Component or Appurtenance 2RHOIAA- 1212RH02052X 2RHOl AA- 1212RH02056X Note: Supplemental sheets in fonn of lists, sketches, or drawings may be used. provided (1) size is 8 112 in. x 11 in., (2) information in items 1 through 6 of this report is incfud& on each sheet, and (3) each sheet is numbered and the number of sheets is recorcled at the top of this form.

Cornputs Generated Fern Manufacturer or Installer HUNTER HUNTER Manufacturer Or lnstaller Serial No. HUNTER HUNTER State or province NO. N/A N/A National Board No. N/A NIA Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-1 OWNERS SWPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 30 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08122187 6. National Board Number for Unit:

N-200 7. Components Inspected: Residual Heat Removal System (RH)

Note (I): Baseline &amination Note (2): Snubber examin& as a Component Support Component or Appurtenance 2RHOlAA- 1212RH02059S 2RHOl AA- 1212RH02107S 2RH02AA- 812RH07006S 2RH02AA- 812RH07011 S 2RH02AA- 812RH07017-S1 2RH02AA- 812RH07017-S2 2RH26AA- 31412RH02121 S Note: Supplemental sheets in form of lists, sketches, or drawings may be used, providd (1) size is 8 112 in. x 57 in., (2) information in items 1 through 6 of this report is included on each sheet, and (3) each sheet is numbered and the nurnber of sheets is record& at the top of this form. Manufacturer or Installer Pacific Scientific Pacific Scientific Pacific Scientific Pacific Scientific Pacific Scientific Pacific Scientific Pacific Scientific Manufacturer or Installer Serial No. 10039 8780 435 1 10419 8026 13054 8077 State or Province No. NA NA NA NA NA NA NA National Board No. NA NA NA NA NA NA NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM MIS-! OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rulss (Page 31 of 48) 1. Owner: Exelon Generation Company,(EGC,LLC), 4300 Winfield Road, Warrenville, Illinois 60555 {Name and Address d Owner) 2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address d Plant) 3. Plant Unit:

2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit:

N-200 7. Components Inspected: Reactor Pressure Vessel (RPV) Note (1): Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2RC-01 -R/H68 2RC-01 -RIH75 Note: Supplemental sheets in form d lists, sketches, or draw~ngs may be used, provided (1) size is 8 112 in. x 11 in., (2) information in items f through 6 of this report is inciudd on each sheet, and (3) each sheet is nuumbererl and the number of sheets is recorded at the top of this form. Manufacturer or Installer Westinghouse Corp.

Westinghouse Corp. Manufacturer Or installer Serial No. 640-001 2-52 640-001 2-52 State or province NO. 8-09062 B-09062 National Board No. N-200 N-200 Byron Station Unit 2 B2R14 IS! Outage Report FORM MIS-1 OWNERS REPORT FOR INSERVICE INSPECTIONS As Requird by the Provisions of the ASME Code Rules (Page 32 of 48) 1. Owner: Exelon Generation Company,(EGC,LLC), 4300 Winfield Road, Warrenville, Illinois 60555 (Name and Address ot Owner) 2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant) 3. Plant Unit:

2 4. Owner Certificate Of Authoriration (if required):

N/A 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Reactor Coolant System (RY) Note (7): Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2RY03BB-6fFLG 1-1 2 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 112 in. x I I in,, (2) information in items 1 through 6 of this report is includ& on each sheet, and (3) each sheet is numberad and the number of sheets is reGorded at the lop of this form.

Manufacturer or Installer Hunter Corp.

State or Province No. NA Manufacturer or Installer Serial No. 2-RC-1 -N5 National Board No. NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 33 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

N/A 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Reactor Coolant System (RY) Mote (1): Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2-RY-2-1 Note: Supplemental sheets in form of lists, sketches.

or drawings may be used, provided (1) size is 8 112 in. x 11 in., 12) information in items 1 through 6 of this report is includecl on each sheet. and (3) each sheet is numbered and the numbr of sheets is recorded at the top of %is form. Manufacturer or Installer Hunter Corporation Manufacturer Or Serial No. N/A State or province NO. NIA National Board No. N/A Byron Stration Unit 2 B2R14 IS! Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Rquird by the Provisions of the ASME Code Rules (Page 34 of 48) 1. Owner: Exelon Generation Company,(EGC,LLC), 4300 Winfield Road, Warrenville, Illinois 60555 (Name and Address d Owner) 2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address d Plant) 3. Plant Unit: 2 4. Owner Certificate Of Authorization (if required):

N/A 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected: Reactor Coolant System (RY)

Mote (I): Baseline hamination Note (2): Snubber examined as a Component Support Component or Appurtenance 2RY01 B-6/2RY06021 V Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 112 in. x 11 in., (2) information in items i through 6 sf this repor"r is includeGi on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. Gorrlputet Genemttrd Form Manufacturer or installer HUNTER Manufacturer Or Serial No. HUNTER State or province NO. N/A National Board No. N/A Byron Station Unit 2 B2R14 IS1 Outage Report FORM MIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS Aa; Required by the Provisions of the ASME Code Rules (Page 35 of 48) 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:

2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Reactor Coolant System (RY) Note (1): Baseline Examination Note (2): Snubber examined as a Companent Supporl Component or Appurtenance 2RY18A-2NV-01 2RY18A-21W-02 2RY18A-2NV-03 2RY 1 8A-2NV-04 Note: Supplemental sheets in ion of lists, sketches.

or drawings may be used, providd (1) size is 8 112 in. x I1 in., (2) information in items 1 through 6 of this repart is included on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this forin. GD~D~Iw Geneate6 Form Manufacturer or Installer Hunter Corp. Hunter Corp. Hunter Corp.

Hunter Corp. Manufacturer or lnstaller Serial No. 2-RC-1 -N5 2-RC-1 -N5 2-KC-1 -N5 2-RC-1 -N5 State or Province No. NA NA NA NA National Board No. NA NA NA NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM MIS-1 OWNERS RREORT FOR INSERVICE INSPECTIONS As Required by the Pr~visions of the ASME Code Rules (Page 36 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

N/A 5. Commercial Service Date: 08/22187 6. National Board Number for Unit:

N-200 7. Components Inspected: Reactor Coolant System (RY) Note (1): Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2RY01 AB- 4/2RY06011 S 2RY01B-612RY06076S 2RY02B-3/2RY09005S 2RY11A- 1 4/2RY05003S 2RY 18A-212RY06114S Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (7) size is 8 112 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 re~orded at the top of &is form. Manufacturer or Installer Pacific Scientific Pacific Scientific Pacific Scientific Pacific Scientific Pacific Scientific Manufacturer or Installer Serial No. 11 153 3347 2045 3336 4356 State or Province No. NA NA NA NA NA National Board No. NA NA NA NA NA Byron Station Unit 2 B2R14 ISI Outage Report FORM HIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 37 of 48) 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 d Plant) 3. Plant Unit: 2 4. Owner Certificate Of Authorization (if required):

N/A 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Steam Generator Blowdown System (SD) Note (1): Baseline Examination Note (2): Snubber examined as a Component Supporl Note: Supplemental sheets in form of lists, sketches, or drawings may be used. provided (I) size is 8 112 in, x 11 in., (2) information in items 1 through 6 of this report is included on each sheet, and (3) each sheet rs numbered and the number of sheets is recorded at the top of this form.

State or province NO. N/A Manufacturer Or installer Serial No. N/A k Component or Appurtenance 2-SD-2-1 National Board No. NIA Manufacturer or Installer Hunter Corporation Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-I OWNERS REPORT FOR lNSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 38 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

N/A 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Steam Generator Blowdown System (SD) Note (I): Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2SDOI CA- 2/2SD02004S 2SD01 CC- 2/2SD03001 S Note: Supplemental sheets in form of lists, sketches, or drawings may be used, providd ((1) size is 8 112 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 numkr of sheets is recorded at the top of this form, Manufacturer or Installer Pacific Scientific Pacific Scientific Manufacturer Or lnstailer Serial No. 12086 5857 State or province NO. NA NA National Board No. NA NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 39 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08122187 6. National Board Number for Unit: N-200 7. Components Inspected: Steam Generator (SG)

Note (I): Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2RC-01 -BAIN-1A-NIR 2RC-01 -BAIN-1 B-NIR 2RC-01 -BAfSGC-01 2RC-01 -BA/SGC-02 2RC-01 -BB/SGC-03 2RC-01-BDIN-1A-NIR 2RC-01-BD/N-18-NIR Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1 j size is 8 112 in. x If 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. Comnulttr Gemmted Form Manufacturer or Installer Westinghouse Corp. Westinghouse Corp. Westinghouse Corp.

Westinghouse Corp. Westinghouse Corp. Westinghouse Corp. Westinghouse Corp. Manufacturer or Installer Serial No. 2095 2095 2095 2095 2096 2098 2098 State or Province No. U-201435 U-201435 U-201435 U-201435 U-201436 U-201438 U-201438 National Board No. 15 15 15 15 16 18 18 Byran Station Unit 2 B2R14 IS1 Outage Report FORM HIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS Abl. Required by the Provisions of the ASME Code Rules (Page 40 of 48) 1. Owner: Exelon Generation Company,(EGC,LLC), 4300 Winfield Road, Warrenville, Illinois 60555 (Name and Address oi Owner) 2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address of Plant) 3. Plant Unit:

2 4. Owner Certificate Of Authorization (if required):

N/A 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit:

N-200 7. Components Inspected: Safety Injection System (SI) Note (7 ): Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2-3-2-1 2-51-2-2 2-Sl-2-3 2-Sl-2-6 2-SI-2-7 2-Sl-2-8 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is S 112 in, x I1 in., (2) information in items 1 through f3 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. Manufacturer or Installer Hunter Corporation Hunter Corporation Hunter Corporation Hunter Corporation Hunter Corporation Hunter Corporation Manufacturer Or lnstalier Serial No. N/A NIA N/A N/A N/A N/A State or province NO. NIA NIA N/A NIA N/A NIA National Board No. N/A N/A N/A NIA NIA N/A Byron Station Unit 2 B2R14 IS1 Outage Report FORM NlS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 41 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected: Safety Injection System (SI) Note (1): Baseline Examination Note (2): Snubber emmined as a Component Suppoft Component or Appurtenance 2S104D-8/2RH02018X 2S104D-812RH02023X 2S105DA-6/2S101008X 2S105DA-6/2S101013X 2SIO8JA-l-1 1212s124001 X 2S108JA 1 12/2S124005X Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (7) size is 8 112 in. x 7 1 in., (2) information in items 1 through 6 of this report is incrud& on each sheet. and (3) each sheet is number& and the number of sheets is recorded at the top of this form. Compulb~ Gemrat@ Form Manufacturer or Installer HUNTER HUNTER HUNTER HUNTER HUNTER HUNTER I Manufacturer Or lnstafier Serial No. HUNTER HUNTER HUNTER HUNTER HUNTER HUNTER 2S108JA-l-1/2/2s124011 X State or province NO. N/A N/A NIA NIA NIA NIA I HUNTER National Board No. NIA NIA NIA N/A N/A NIA HUNTER NIA NIA

'Flyran Station Unit 2 821314 IS1 Outage Report FORM MIS-I OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 42 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Safety Injection System (SI) Note (1): Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2SIOlB-24/C35 2S101 B-24iC36 2S101 B-24/C37 2S102BA-61C01 2S102BB-6/C01 2S108B-41C05 v 2S108FA-3IJ16 Note: Supplementat sheets in form of lists, sketches, or drawings may be used, provicld (1) size is 8 112 in. x 11 in., i2) information in items 1 through 6 of this report is includM 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 Manufacturer or Installer Hunter Corp. Hunter Corp. Hunter Corp. Hunter Corp. Hunter Corp.

Hunter Corp. - National Board No. NA NA NA NA NA NA Manufacturer or Installer Serial No. 2-SI-2-N5 2-SI-2-N5 2-SI-2-N5 2-SI-2-N5 2-SI-2-N5 2-SI-2-N5 State or Province No. NA NA NA NA NA NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM MIS-1 OWNERS REPORT FOR lNaSERVlCE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 43 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Safety Injection System (SI) 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 8 112 in. x 11 in., (2) information in items 1 through 6 of this report is incfuded on each sheet, and (3) each sheet is number& and the numbr of sheets is rwarded at the top of this form. J) Component or Appurtenance 2S108FA-3/J36 2S108HA-2NV-01 2S108HA-2NV-02 2S108HA-2NV-03 2S108HA-2NV-04 2S108HA-2NV-05 2S108HA-2NV-06 Computer Gemrat& Form 2SIOBJA-1.5NV-04 Manufacturer or Installer Hunter Corp. Hunter Corp. Hunter Corp. Hunter Corp. Hunter Corp. Hunter Corp.

Manufacturer Or lnsta'ler Serial No. 2-3-1 -N5 2-SI-1-N5 2-Sl-1 -N5 2-SI-1 -N5 2-SI-1 -N5 2-SI-1 -N5 State or province NO. NA NA NA NA NA NA National Board No. NA NA NA NA NA NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-1 OWNERS REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 44 of 48) 1. Owner: Exelon Generation Company,(EGC,LLC), 4300 Winfield Road, Warrenville, Illinois 60555 (Name and Address d Owner) 2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61 01 0 (Name and Address d Plant) 3. Plant Unit: 2 4. Owner Certificate Of Authorization (if required):

MIA 5. Commercial Service Date: 08122187 6. National Board Number for Unit: N-200 7. Components Inspected: Safety Injection System (SI) Mote (1): Baseline Examination Note (2): Snubber examind as a Component Support Component or Appurtenance 2SIO8JA-1.5NV-05A 2S108JA-1.5NV-05B 2S108JA-1.5NV-06 2S108JA-1.5NV-07 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (I) size is 8 112 in. x 11 in., (2) information in items 1 through 6 of this report is includecf on each sheet, and (3) each sheet D numbered and the number of sheets is record& at the lop of this form. 2SIO8JA-1.5NV-10 Hunter Corp.

2431-1 -N5 NA NA 2SIO8JA-1.5NV-I 1 Hunter Corp. 2-SI-1 -N5 NA NA 2S108JA-1.5Mr-14 2311 3A-61C04 Manufacturer or Installer Hunter Corp. Hunter Corp. Hunter Corp.

Hunter Corp. Manufacturer or lnstaller Serial No. 2-3-1 -N5 2-SI-1 -N5 2-SI-1-N5 2-$1-1 -N5 State or Province No. NA NA NA NA National Board No. NA NA NA NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 45 of 48) 1. Owner: Exelon Generation Company,(EGC,LLC), 4300 Winfield Road, Warrenville, Illinois 60555 (Name and Address d Owner) 2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address d Plant) 3. Plant Unit:

2 4. Owner Certificate Of Authorization (if required):

N/A 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Safety Injection System (SI) Note (1): Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2Sl18FC-2NV-01 A 2Sl18FC-2NV-016 2SIF9A-81C03 2SI F9A-8/C04 Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (1) size is 8 112 in. x 11 in.. 12) information in items 1 through 6 of this report is includd on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this form. Manufacturer or Installer Hunter Corp.

Hunter Corp. Hunter Corp. Hunter Corp.

Manufacturer Or installer Serial No. 2-SI-1 -N5 241-1 -N5 2-SI-2-N5 2-SI-2-N5 State or province NO. NA NA NA NA National Board No. NA NA NA NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-1 OWNERS REPORT FOR INSERVICE INSPECTIONS hs Required by the Pravisions of the ASME Code Rules (Page 46 of 48) 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: 2 4. Owner Certificate Of Authorization (if required):

NIA 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit: N-200 7. Components Inspected:

Safety Injection System (SI) Note (I): Baseline Examination Note (2): Snubber examinecl as a Component Suppit Component or Appurtenance 2S105DD-6/2Sl03014-Sl 2S105DD-6/2Si03014-52 2S106BB- 2412S10624OS Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (3) size is 8 112 in. x 17 in., (2) information in items 1 through 6 of this report is inciudd on each sheet, and (3) each sheet is numbered and the number of sheets is recorded at the top of this forrn. Manufacturer or Installer Pacific Scientific Pacific Scientific Pacific Scientific Manufacturer or Installer Serial No. 9563 402 1 3989 State or Province No. NA NA NA National Board No. NA NA NA Byron Station Unit 2 B2R14 IS1 Outage Report FORM NIS-1 OWNER" REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 47 of 48) 1. Owner: Exelon Generation Company,(EGC,LLC), 4300 Winfield Road, Warrenviile, Illinois 60555 (Name and Address of Owner) 2. Plant: Byron Nuclear Power Station, 4450 North German Church Road, Byron, Illinois 61010 (Name and Address oi Plant) 3. Plant Unit:

2 4. Owner Certificate Of Authoriration (if required):

N/A 5. Commercial Service Date: 08/22/87 6. National Board Number for Unit:

N-200 7. Components Inspected:

Essential Service Water System (SX) Note (1 j: Baseline Examination Note (2): Snubber examined as a Component Support Component or Appurtenance 2SX07CA- 10/2SX08026X 2SXO9CB- 1 0/2sx0902 1 X Note: Supplemental sheets in form of lists, sketches, or drawings may be used, provided (3) size is 8 112 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. Manufacturer or Installer HUNTER HUNTER National Board No.

NIA N/A Manufacturer Or lnstailer Serial No. HUNTER HUNTER State or province NO. N/A N/A Byron Station Unit 2 B2R14 IS1 Outage Report FORM MIIS-1 OWNER'S REPORT FOR INSERVICE INSPECTIONS As Required by the Provisions of the ASME Code Rules (Page 48 of 48) (BACK) 8. Examination Dates: ..--._--.__-_---.---.p 05103/2007 to 1 012412008

9. Inspection Period Identification: . First-lnsg~!<%iion-Pfxkd 10. Inspection interval Identification:

Third Inweetion

!!ntervaI . ._._~_--.-p-_.--_-_--

11. Applicable Edition of Section XI: 2001 _- Addenda am - ____ - - _ ____- 12. Date / Revision of Inspection Plan: 02/01/2008

/ 2 -_ 13. Abstract of Examinations and Test. Include a list of examinations and tests and a statement concerning status of work required for the lnspection Plan. Refer to the Outage Summary Report and IS1 Program Plan

14. Abstract of Results of Examinations and Tests. Refer to the Outage Summary Report 15. Abstract of Corrective Measures.

Refer to the Outage Summary Report We certify that a) the statements made in this report are correct, b) the examinations and tests meet the lnspection Plan as required by the ASME Code,Section XI, and c) corrective measures taken conform to the rules of the ASME Code,Section XI. Certificate of Authorization No. (if applicable):

NIA Expiration Date: N/A d for:Exelon Generation Companv 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 1)5103/2007 to 10124/2008, and state that to the best of my knowledge and belief, the Owner has performed examinations and tests and taken corrective measures described in this Owner's Report in accordance with the requirements of the ASME Code,Section XI. By signing this certificate neither the lnspector nor his employer makes any warranty, expressed or implied, concerning the examinations, tests, and corrective measures described in this Owner's Report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection. - Commissions:

ILL-1254 Date: National Board, State, Province, and Endorsements Computer Generated Form

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