ML14253A319
| ML14253A319 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 12/31/2013 |
| From: | Hyres J B & W Technical Services |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML14253A310 | List: |
| References | |
| AEP-NRC-2014-59 S-1473-002 | |
| Download: ML14253A319 (30) | |
Text
B&W Technical Services Group S-1473-002 51 B&W Technical Services Group S-1473-002 51 Figure 34: Receipt macro photographs for bolt 3000-6.
B&W Technical Services Group S-1473-002 52 B&W Technical Services Group S-1473-002 52 bont 0uU-7 bflanK Figure 35: Receipt macro photographs for bolt 3000-7.
B&W Technical Services Group S-1473-002 53 B&W Technical Services Group S-I 473-002 53 Figure 36: Receipt macro photographs for bolts 1-4 from the 1200 clevis. Bolt orientation in the photos matches the in-service orientation. Red dashed lines denote fracture surface axis of symmetry.
B&W Technical Services Group S-1473-002 54 B&W Technical Services Group S-1473-002 54
- 7 Bolt fracture surface destroyed during removal.
Figure 36 (continued): Receipt macro photographs for bolts 5, 6, and 8 from the 1200 clevis.
Bolt orientation in the photos matches the in-service orientation. Red dashed lines denote fracture surface axis of symmetry.
B&W Technical Services Group S-1473-002 55 B&W Technical Services Group S-I 47 3-002 55 Figure 37: Receipt macro photographs for bolts 7 and 8 from the 1800 clevis. Bolt orientation in the photos matches the in-service orientation. Red dashed lines denote fracture surface axis of symmetry.
B&W Technical Services Group S-1473-002 56 B&W Technical Services Group S-1473-002 56 Figure 38: Receipt macro photographs for bolts 5, 6, and 7 from the 3000 clevis. Bolt orientation in the photos matches the in-service orientation. Red dashed lines denote fracture surface axis of symmetry.
I
B&W Technical Services Group S-1473-002 57 B&W Technical Services Group S-I 473-002 57 ro at I
microscope image I
- ro at 40- orientation reo microscope image Figure 39
- Macro and stereo photographs of bolt 1200-2 taken at 450 increments.
B&W Technical Services Group S-1473-002 58 B&W Technical Services Group s-I 473-002 58
-z macro Stereo microscope image acro at 130o-orientation reo
- ope image Figure 39 (continued): Macro and stereo photographs of bolt 120*-2 taken at 450 increments.
B&W Technical Services Group S-1473-002 59 B&W Technical Services Group S-1473-002 59
-A IVIaI~rO dL AA uruenLt.10 eo microscope image psx)
Figure 39 (continued): Macro and stereo photographs of bolt 1200-2 taken at 450 increments.
B&W Technical Services Group S-1473-002 60 icro at 3150 orientation eo microscope image Figure 39 (continued): Macro and stereo photographs of bolt 1200-2 taken at 450 increments.
B&W Technical Services Group S-1473-002 61 B&W Technical Services Group S-1473-002 61 orientation
'tic 111109W orlen microscope image Figure 40: Macro and stereo photographs of bolt 1200-6 taken at 450 increments.
B&W Technical Services Group S-1473-002 62 B&W Technical Services Group S-1473-002 62 1
orientation
-ICU IIIIL'IU.11%,UPV IIIICIWV ro at n
reo microscope image Figure 40 (continued): Macro and stereo photographs of bolt 1200-6 taken at 450 increments.
B&W Technical Services Group S-1473-002 63 B&W Technical Services Group s-I 473-002 63 5-6 Macro at 180' orientation
.ICU ro at n
reo microscope image Figure 40 (continued): Macro and stereo photographs of bolt 1200-6 taken at 450 increments.
B&W Technical Services Group S-1473-002 64 B&W Technical Services Group s-I 473-002 64 icro at microscope image I1 Figure 40 (continued): Macro and stereo photographs of bolt 1200-6 taken at 450 increments.
B&W Technical Services Group S-1473-002 65 B&W Technical Services Group S-I 473-002 65 I1 acro at 0° orientation
,PC icro at 450 orientation Figure 41: Macro and stereo photographs of bolt 2400-7 taken at 450 increments.
B&W Technical Services Group S-1473-002 66 Figure 41 (continued): Macro and stereo photographs of bolt 2400-7 taken at 450 increments.
B&W Technical Services Group S-1473-002 67 B&W Technical Services Group 5-1473-002 67 icro at 2250 orientation I
- Eww *uuL.u 11u 0
iia~
Figure 41 (continued): Macro and stereo photographs of bolt 2400-7 taken at 450 increments.
B&W Technical Services Group S-1473-002 68 B&W Technical Services Group S-I 473-002 68 Figure 41 (continued): Macro and stereo photographs of bolt 2400-7 taken at 450 increments.
B&W Technical Services Group S-1473-002 69 cope image Figure 42: Macro and stereo photographs of bolt 300-1 taken at 450 increments.
B&W Technical Services Group S-1473-002 70 B&W Technical Services Group s-I 473-002 70
!-1 Macro at 900 orientation I
at ope image Figure 42 (continued): Macro and stereo photographs of bolt 300°-1 taken at 450 increments.
B&W Technical Services Group S-1473-002 71 B&W Technical Services Group S-I 473-0 02 71 icro at 1800 o
,ntation
=Cw IIIIOUW ro at orientation
-Itm IIIIOUV Figure 42 (continued): Macro and stereo photographs of bolt 300°-1 taken at 450 increments.
B&W Technical Services Group S-1473-002 72 B&W Technical Services Group S-1473-002 72 cro at 2700 orientation
- '1 II*U I I I IIL*I U*IL*U JJIl*
cro at 3156 orientation VIWLP IIII%.Ij Figure 42 (continued): Macro and stereo photographs of bolt 300-1 taken at 450 increments.
B&W Technical Services Group S-1473-002 73 B&W Technical Services Group S-1473-002 73 Figure 43: Wire EDM was used to section each bolt for destructive examinations. The above photo shows initial machining of the threaded region for hardness and tensile testing.
Figure 44: Section photograph for bolt 240°-7 showing the typical locations chosen for subsequent analysis. The five Rockwell C hardness indents are visible on the upper surface of the hardness/tensile blank.
B&W Technical Services Group S-1473-002 74 B&W Technical Services Group S-1473-002 74 Figure 45:
ypical location of tensile specir tested specin 1.000 mens machined from each bolt. The IDs of the hens are shown.
0.030
-W
-W2k 0.030 W1 = 0.060 +/-0.002 W2 = 0.0005 to 0.0010 greater than W1; with smooth transition from W1 to W2.
(typ. - 4 places)
Figure 46: Miniature tensile specimen design showing dimensions.
B&W Technical Services Group S-1473-002 75 B&W Technical Services Group S -1 473-002 75 Figure 47: Bolt 240-7 after breaking open the crack for SEM/EDS. The two mating halves of the crack are shown. The head side of the fracture (to left) was analyzed by SEMIEDS.
Figure 48: Bolt 300-1 showing plunge cut EDM surface, which removed much of the in-service cracking. Thickness measurements taken around the circumference indicated the EDM was skewed slightly toward the 2700 direction (i.e. to the left in photo).
B&W Technical Services Group S-1473-002 76 B&W Technical Services Group S-I 473-002 76 Figure 49: Macro photograph showing the open crack surface for bolt 120-2. The areas within the white rectangles are shown at higher magnification in the following figures.
B&W Technical Services Group S-1473-002 77 enter oT rigure OU,
B&W Technical Services Group S-1473-002 78
B&W Technical Services Group S-1473-002 79
B&W Technical Services Group S-1473-002 80 B&W Technical Services Group S-I 473-002 80 Figure 56: Macro photograph showing the open crack surface for bolt 120°-6. The areas within the white rectangles are shown at higher magnification in the following figures.