1. Pipeline NDT Introduction
台灣金屬材料品管有限公司
Taiwan Metal Quality Control Co. Ltd
Tel. 07-8019312, 8019340 Fax. 07-8063017
WEB: www.tmqc.com.tw
http://guidedwavelee.blogspot.tw/
TMQC

2. TMQC
Pipeline and Inspection Method
2015/4/13 2
GWUT
MRUT
PAUT
TMQC

3. TMQC
 Long-Range Pipeline Guided Wave Ultrasonic Testing (LRUT)
◦ Rapid Screen the Location of Corrosion
◦ Qualitative Inspection (minor, medium, severe corrosion)
 Medium-Range Guided Wave Ultrasonic Testing (MRUT)
◦ Quantitative Inspection (20% WALL LOSS, 40% WALL LOSS, 60% WALL LOSS, 80% WALL LOSS)
◦ Corrosion at Pipe Support
◦ Inspects hidden or inaccessible regions
 Phased Array UT (PAUT)
◦ Corrosion Mapping
◦ Crack Detection
◦ Weld Inspection
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Pipeline NDT Introduction
TMQC

4. TMQC
2015/4/13 TMQC 4
Long-Range Pipeline Guided
Wave Ultrasonic Testing
TMQC

5. TMQC
TMQC 5
Long Range UT
-18dB
-40 -20 0 20 40
0
90
180
270
360
Angle(deg)
-40 -20 0 20 40
0.00
0.10
0.20
0.30
Distance (m)
Amp(Linear)
+F12
-F2
-F5
+F1
+F3
-F1
-F3
-F4
-F6
-F7
+F2
+F4
+F5
+F6
+F7
+F8
+F9
+F10
+F11
-F8
-F9
-F10
Each direction 50 m
2015/4/13
TMQC

6. TMQC
Guided Wave on Pipeline
2015/4/13 TMQC 6
Transducer
corrosion
TMQC

7. TMQC
Localized Corrosion and General Corrosion
2015/4/13 TMQC 7
TMQC

8. TMQC
Corrosion at Pipe Features
2015/4/13 TMQC 8
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9. TMQC
2015/4/13 TMQC 9
Thickness Gauging v.s LRUT
• Guided Wave
– Qualitative Inspection
– Reduced the cost of scaffolding and
insulation
– Able to do 100% inspection
– Able to do inspection in un-accessible area
• Traditional UT
– Quantitative Inspection
– High cost for full pipe inspection
– Unable to do 100% inspection
– Unable to do inspection in un-
accessible area
TMQC

10. TMQC
The Equipment of Guided Wave
2015/4/13 TMQC 10
TMQC

11. TMQC
Theory of Guided Wave
2015/4/13 TMQC 11
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12. TMQC
Cross-Section Change(Corrosion)
2015/4/13 TMQC 12
TMQC

13. TMQC
13
LRUT+ Additional NDT
2015/4/13 TMQC
TMQC

14. TMQC
Signal Display of LRUT
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TMQC

15. TMQC
2015/4/13 TMQC 15
LRUT Application
Long
Range
CUI
Overhead
Buried
Pipe
TMQC

16. TMQC
2015/4/13 TMQC 16
Long Range Insulated Pipeline
-18dB
-40 -20 0 20
12
9
6
3
12
Clock
-40 -20 0 20
1.5
1
0.5
0.25
0.1
0.05
0.025
0.01
0.005
Distance (m)
Amp(Log)
+F12+F11
S42
+F9
S43
S44
+F7+F6
+F5S45
+F3
S46
+F1
S47
S48
-F2
S49
S50
-F4
S51-F6
S52
-F8
S53
-F9
S54
-F11
S55
-F13
S56
S57-F15-F16-F17
TMQC

17. TMQC
Corrosion at Pipe Support
2015/4/13 TMQC 17
-18dB
-2.0 0.0 2.0 4.0
0
90
180
270
360
Angle(deg)
-2.0 0.0 2.0 4.0
0.0
1.0
2.0
3.0
Distance (m)
Amp(Linear)
-F3
-F2
-F1
+F1
+F2
+F3
+F4
+F5
TMQC

18. TMQC
General Corrosion on pipe under the road
2015/4/13 TMQC 18
-18dB
-15.0 -10.0 -5.0 0.0
12
9
6
3
12
Clock
-15.0 -10.0 -5.0 0.0
0.0
2.0
4.0
6.0
8.0
Distance (m)
+F4
+F3
+F2
+F1
-F1-F2
-F3
-F4
-F5
-F6
-F7
Severe general corrosion
TMQC

19. TMQC
2015/4/13 19
Overhead Pipeline
-26dB
0.0 5.0 10.0 15.0 20.0
0
90
180
270
360
Angle(deg)
0.0 5.0 10.0 15.0 20.0
0.00
0.10
0.20
0.30
0.40
Distance (m)
Amp(Linear)
+F1
+F2
+F3
+F4
+F5
+F6
+F7
+F8
-F1
-F2
TMQC
TMQC

20. TMQC
Corrosion Under Insulation
2015/4/13 20
-20.0 -10.0 0.0 10.0
2.5
1
0.5
0.25
0.1
0.05
0.025
0.01
0.005
0.0025
Distance (m)
Amp(Log)
-F1-F2
-F3
+F2
+F1
+F3
+F4
P11_C1
+F5
+F6
+F7
-F4
C2
-F5
P11_C3
-F6
-F7
P11_C4
-F8
-F9
Corrosion with 6 mm depth
Severe Corrosion
Mark the check point Remove Insulation
TMQC
TMQC

21. TMQC
Corrosion at Pipe Elbow
2015/4/13 21
-18dB
-6.0 -5.0 -4.0 -3.0
12
9
6
3
12Clock
-6.0 -5.0 -4.0 -3.0
0.0
0.2
0.4
0.6
0.8
Distance (m)
Amp(Linear)
-F3
-F4
-F5
5.08 mm
4.37 mm
TMQC
TMQC

22. TMQC
FEM and Experiment in TMQC
TMQC 22
土壤
管道 導波
導波洩漏
2015/4/13
TMQC

23. TMQC
2015/4/13 TMQC 23
 Medium-Range Guided Wave Ultrasonic
Testing (MRUT)
TMQC

24. TMQC
MRUT Wave Propagation
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Forward wave
Reverse wave
Probe location
Defect
Reflected wave
TMQC

25. TMQC
MRUT
2015/4/13 TMQC 25
• Provides higher defect resolution than LRUT
• Inspects hidden or inaccessible regions
• Generates a simple 2D scan image
TMQC

26. TMQC
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Phased Array UT
TMQC

27. TMQC
2015/4/13 TMQC 27
PAUT Application- Corrosion B-scan Mapping
TMQC

28. TMQC
PAUT-Pipe Inspection
2015/4/13 TMQC 28
TMQC

29. TMQC PAUT Application - Corrosion Mapping on Piping
-Automatic Ultrasonic Testing-
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TMQC

30. TMQC
2015/4/13 TMQC 30
PAUT Application- Crack Detection
TMQC
crack distribution near the manhole of
pressure vessel
TMQC

31. TMQC
PAUT- Weld Inspection
2015/4/13 TMQC 31
正下方
500mm
430mm
PAUT
130mm
單點最大瑕疵之位置
Wall Thickness
150mm
50mm
10mm
50mm
30mm
探頭前緣距離
120mm
TMQC

32. TMQC PAUT-Nuclear Power Plant Weld
-Automatic Ultrasonic Testing-
2015/4/13 TMQC 32
TMQC

33. TMQC PAUT-Pressure Vessel Weld
-Automatic Ultrasonic Testing-
2015/4/13 TMQC 33
TMQC

34. TMQC PAUT-Boiler Tube Weld Inspection
-Semi-automatic Ultrasonic Testing-
2015/4/13 TMQC 34
TMQC

35. TMQC 台灣金屬材料品管有限公司
Taiwan Metal Quality Control, TMQC
 Address: 7F, No.702, Hanmin Rd., Hsiaokang Dist Kaohsiung 812 Taiwan.
 Telephone : +886-07-8019312
 General Manager : Chi-Jen Huang
 Website : http://www.tmqc.com.tw
 E-mail : tmqc.hcj@msa.hinet.net
 Contact : Lee Ping Hung ( leehung1218@gmail.com)
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TMQC