ML15223A376

NRC000221C - Babcock & Wilcox Report, S-1473-002, Final Report, Rev. 0, Examination of Clevis Bolts Removed from D. C. Cook Nuclear Plant (Dec. 2013)

ML15223A376
Person / Time
Site:	Indian Point
Issue date:	12/31/2013
From:	NRC/OGC
To:	Atomic Safety and Licensing Board Panel
SECY RAS
References
RAS 28145, ASLBP 07-858-03-LR-BD01, 50-247-LR, 50-286-LR
Download: ML15223A376 (15)

Text

NRC00221C Submitted: August 10, 2015 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

1. 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.