ML111030188: Difference between revisions

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{{Adams
#REDIRECT [[RS-11-062, Enclosure 3 - Dose Estimates]]
| number = ML111030188
| issue date = 04/08/2011
| title = Enclosure 3 - Dose Estimates
| author name =
| author affiliation = Exelon Generation Co, LLC, Exelon Nuclear
| addressee name =
| addressee affiliation = NRC/NRR
| docket = 05000454
| license number = NPF-037
| contact person =
| case reference number = RS-11-062
| package number = ML111010578
| document type = - No Document Type Applies
| page count = 4
}}
 
=Text=
{{#Wiki_filter:ATTACHMENT 3 DOSE ESTIMATES
 
Pen Ind Character/Loc. Repair steps Time Dose mRem Repair Comments 64 1 Mark indication 6 420    Light Grinding 20 1400    Welding Supv Perform Visual 2 140    Remark Penetration and Clean  3 210    Enter/Exit  All Jumps 94 6819    12:00 J-Weld 3/32" x 1/4" Linear Rejectable QC inspection @ 5X PT of area 20 1400 Light Grind to reduce to acceptable Weld over if depth required 64 2 Mark indication 0 0    Light Grinding 0 0    Welding Supv Perform Visual 2 140    Remark Penetration and Clean  3 210    12:00 J-Weld 1/16" x 1/16" Rounded Acceptable QC inspection @ 5X PT of area 1 70 Repaired incidently with #1 64 3 Mark indication 0 0    Light Grinding 15 1050    Welding Supv Perform Visual 2 140    Remark Penetration and Clean  3 210    11:00 1/16" x 1/2" Linear Rejectable QC inspection @ 5X PT of area 1 70 Light Grind to reduce to acceptable Weld over if depth required 64 4 Mark indication 0 0    Light Grinding 22 1540    Welding Supv Perform Visual 2 140    Remark Penetration and Clean  3 210    3:00 1/4" x 1/4" Rounded Rejectable QC inspection @ 5X PT of area 1 70 Light Grind to reduce to acceptable Weld over if depth required 64 5 Mark indication 0 0    Light Grinding 0 0    Welding Supv Perform Visual 0 0    Remark Penetration and Clean  3 210    3:00 1/8" x 1/8" Rounded Acceptable QC inspection @ 5X PT of area 1 70 Possibly will be  Repaired incidently with #1 64 6 Mark indication 10 700    Light Grinding 15 1050    Welding Supv Perform Visual 2 140    Remark Penetration and Clean  3 210    2:00 1/8" x 1/2" Linear Rejectable QC inspection @ 5X PT of area 1 70 Light Grind to reduce to acceptable Weld over if depth required
 
Pen Ind Character/Loc. Repair steps Time Dose mRem Repair Comments 64 7 Mark indication 0 0    Light Grinding 15 1050    Welding Supv Perform Visual 2 140    Remark Penetration and Clean  3 210    2:00 0 Rounded Rejectable QC inspection @ 5X PT of area 1 70 Light Grind to reduce to acceptable Weld over if depth required 64 8 Mark indication 0 0    Light Grinding 15 1050    Welding Supv Perform Visual 2 140    Remark Penetration and Clean  3 210    5:00 1/16" x 3/16" Linear Rejectable QC inspection @ 5X PT of area 1 70 Light Grind to reduce to acceptable Weld over if depth required 64 9 Mark indication 0 0    Light Grinding 10 700    Welding Supv Perform Visual 2 140    Remark Penetration and Clean  3 210    6:00 1/16" x 3/16" Linear Rejectable QC inspection @ 5X PT of area 1 70 Light Grind to reduce to acceptable Weld over if depth required 31 1 Mark indication 6 420    Light Grinding 15 1050    Welding Supv Perform Visual 2 140    Remark Penetration and Clean  3 210    11:00 1/8" x 3/8" Linear Rejectable QC inspection @ 5X PT of area 15.5 1085 Light Grind to reduce to acceptable Weld over if depth required 31 2 Mark indication 0 0    Light Grinding 15 1050    Welding Supv Perform Visual 2 140    Remark Penetration and Clean  3 210    1:00 1/16" x 1" Linear Rejectable QC inspection @ 5X PT of area 1 70 Light Grind to reduce to acceptable Weld over if depth required 31 3 Mark indication 0 0    Light Grinding 15 1050    Welding Supv Perform Visual 2 140    Remark Penetration and Clean  3 210    1:00 1/4" x 1/4" Rounded Rejectable QC inspection @ 5X PT of area 1 70 Light Grind to reduce to acceptable Weld over if depth required
 
Pen Ind Character/Loc. Repair steps Time Dose mRem Repair Comments 31 4 Mark indication 0 0    Light Grinding 22 1540    Welding Supv Perform Visual 2 140    Remark Penetration and Clean  3 210    8:00 1/2" x 5/8" Rounded Rejectable QC inspection @ 5X PT of area 1 70 Local Excavate to reduce to acceptable Weld over if depth required Total REM 28..554  Assumptions:
 
Only covers penetration 64 and 31  Both options include grinding on 64-4 and 31-4  (pen-Indication)
Both options include weld repair (overlay) on all indications in 64 and 31 No extra time for chasing indications after grinding
 
Actuals for dose used:  Dose at head 70 mrem/min  Dose in and out 36 mrem/min Dose on turnovers .1 mrem/min
 
==
Conclusions:==
 
Relief request will yield a 7 REM savings for pen 64 and 31 MINIMUM
 
Additional saving should be less for the remaining penetrations since we expect less indication repair.
 
Overall savings of approx 35% in dose.}}

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