ML20141A979
| ML20141A979 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 03/07/1997 |
| From: | NORTHERN STATES POWER CO. |
| To: | |
| Shared Package | |
| ML20140J498 | List: |
| References | |
| 97-0136, 97-136, NUDOCS 9705150087 | |
| Download: ML20141A979 (3) | |
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i Northern States Power Company Prairie Island Unit 2 Report # 97-0136 Operations & Maintenance Supt 45' ULTRASONIC EXAMINATION source Doc-B 2. 40 Materials & Special Processes REPORT (3rd 10yr)
S/N 2618 System ISO Item Item Description Steam Generator 22 2-ISI-37B W-A Tube Sheet to Head Material Size / Length Thick /Dia Temp Surface Condition SA216 WCC / SA508 CL2 135"-
5.160 7 5' F BLENDED l Procedure W R Number ISI Contractor Exam Date ISI-UT-3 Rev 7 Field Change N/A 9612227 L/yff-01/30/97 Calibration
. Beam Angle Temp Gauge S/N Exam Start @
hours Report Nmbr TWT-002 45' (Nominal)
NSP-049 Exam End @
hours Evaluation Level Reporting Level Cal Block 25A Ref Sensitivity 20/7 dB 20% DAC 20 % DAC Ref Std LMT-109 Scan Sensitivity 20/16 dB NAD = No Apparent Discontinuities 1 L = Linear; S = Spott M = Multiple lRESULTS GEO = Geometry Visual = Non-Section XI Visual Examination Scan Res-Indication Sweep Metal Surf Cire Axial
. Indication Amp
, Nmbr ults Type Loc'n Path Dist Location Location Length
%DAC 1
- L LINEAR 2
NAD 3
- L LINEAR 4
- L LINEAR LIMITATIONS: 2x2 Insulation Pads US: l '-2 ", 10'- 1 ", 19'-0" 2x2 Insulation Pads DS:
0'-0", l'-2", l'-10",3'-8"., 7-3",10'-1",12'-4",14'-1",16'- 1",17 10",19'-6", 2 l'-2". Name Plate: 16'-1" to 16'6".
I a
' REMARKS: Exam meets 1/3 commitment for 3rd interval,1st period and includes O' 22' of weld.
- Exam Dates:l/30/97 Start =1304; End=1704, 1/31/97 Start =0829; End=1532.
l
" Indications See attached Indication Data Tabulation Sheet.
SKETCH O AEF-15 CL. or nor e EG E
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Examiner:
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Page 1 of 1 9705150087 970506 PDR ADOCK 05000282 P
h MATERIALS & SPECIAL PROCESSES INDICATION DATA TABULATION SHEET Examination Report # 97-0136
@ MAX AMP FORWARD BACKWARD
+ 20% DAC or 50%
- 20% DAC or 50%
L1 L2 0*
Ind Scan
% of W Max Max Amp Max Amp 20 %
L 20%
Back DAC W
S Div MP W:
S Div MP W2 S Div MP DAC MAX DAC Amp REMARKS 1
1 52 2.2 6.1 5.75 1.8 5.8 5.50 2.8 6.6 6.21 233.8 234.2 234.6 N/A 45*
2 1
40
-1.3 1.9 1.82
-1.4 1.8 1.73
-1.1 2.0 1.91 122.4 122.6 123.2 N/A 45*
3 1
25
-2.4 5.8 5.47
-2.1 5.4 5.09 2.8 6.3 5.94 143 143.2 143.8 N/A 45*
4 1
120 8.23 8.9 8.41 43.1 N/A GEO. 45*
(TUBE SHEET) 5 1
30
-0.1 2.3 2.15
-0.4 2.0 1.92 0.2 2.5 2.38 38.5 39.2 39.5 N/A 45" NAD 2
6 3
37
-1.5 6.7 6.42
-1.4 6.7 6.40
-1.7 6.7 6.42 160.3 160.7 160.9 N/A 45*
7 3
54
-3.2 4.2 3.92
-2.9 4.0 3.76
-3.5 4.5 4.27 235.1 235.5 235.8 N/A 45" 8
3 156
-3.3 2.4 2.29
-2.9 2.2 2.05
-3.6 2.7 2.53 159.2 159.5 160.0 N/A 45*
9 3
44
-1.6 4.1 3.85
-1.5 3.7 3.49
-1.8 4.5 4.31 90.6 91.1 91.7 N/A 45*
SCALED PLOT ind.#4 E
nimmo i
4 I
L1 l
Lmax 12 e
il F] O O 4
PL_J WI4
+ NOTE - For flaw indications that peak at less than 20% DAC, l
dimensions are to be taken from the 50% Max Amp pts.
scale. 2.4:l l
Y~
~ 77 Examiner Date 4
Date Page 2 nf 3 Examiner O
+
.. _ ~
h MATERIALS & SPECIAL PROCESSES INDICATION DATA TABULATION SHEET Examination Report # 97-0136
@ MAX AMP FORWARD BACKWARD
+ 20% DAC or 50%
+ 20% DAC or 50%
L1 L2 0*
Ind Scan
% of W Max Max Amp Max Amp 20%
I 20%
Back DAC W
S Div MP W1 S Div MP W2 S Div MP DAC MAX DAC Amp REMARKS 10 4
48
-3.9 5.1 4.87
-3.6 4.6 4.39
-4.2 5.4 5.1 6.1 6.9 7.2 N/A 45" 11 4
71
-3.9 1.6 1.49
-3.5 1.2 1.15
-4.4 1.8 1.70 73.3 73.8 74.1 N/A 45" 12 4
36
-3.4 2.2 2.07
-3.1 1.5 1.40
-3.7 2.2 2.10 94.2 95.1 95.2 N/A 45*
13 4
62
-3.0 3.8 3.64
-2.8 3.4 3.20
-3.5 4.0 3.80 110.7 111.4 111.6 N/A 45*
14 4
53
-2.3 1.6 1.59
-2.1 1.5 1.41
-2.6 2.3 2.18 156.9 157.2 157.9 N/A 45*
15 4
37
-3.8 5.7 5.39
-3.6 5.3 5.06
-3.9 5.9 5.58 144.0 144.5 144.7 N/A 45*
16 4
41
-3.7 2.8 2.65
-3.5 2.5 2.37
-3.9 3.0 2.79 211.8 212.4 212.5 N/A 45*
17 4
45
-3.7 3.3 3.17
-3.312.9 2.75
-4.1 3.7 3.48 148.0 148.5 149.0 N/A 45" SCALED PLOT Danim o 4
L1 l
tmax 12 b
4 r--
- NOTE - For flaw indications that peak at less than 20% DAC, dimensions are to be taken from the 50% Max Amp pts.
I '~
k2 Date Examiner g
N Page 3 of 3 Examiner M
Date
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