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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
TMQC
Pipeline and Inspection Method
2015/4/13 2
GWUT
MRUT
PAUT TMQC
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
2015/4/13 TMQC 3
Pipeline NDT Introduction
TMQC
TMQC
2015/4/13 TMQC 4
Long-Range Pipeline Guided
Wave Ultrasonic Testing
TMQC
TMQC
TMQC 5
Long Range UT
-18dB
-40 -20 0 20 400
90
180
270
360
Angle
(deg
)
-40 -20 0 20 400.00
0.10
0.20
0.30
Distance (m)
Am
p (
Lin
ear)
+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
TMQC Guided Wave on Pipeline
2015/4/13 TMQC 6
Transducer
corrosion
TMQC
TMQC Localized Corrosion and General Corrosion
2015/4/13 TMQC 7 TMQC
TMQC Corrosion at Pipe Features
2015/4/13 TMQC 8 TMQC
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
TMQC
The Equipment of Guided Wave
2015/4/13 TMQC 10 TMQC
TMQC
Theory of Guided Wave
2015/4/13 TMQC 11 TMQC
TMQC
Cross-Section Change(Corrosion)
2015/4/13 TMQC 12 TMQC
TMQC
13
LRUT+ Additional NDT
2015/4/13 TMQC TMQC
TMQC
Signal Display of LRUT
2015/4/13 TMQC 14 TMQC
TMQC
2015/4/13 TMQC 15
LRUT Application
Long
Range
CUI
Overhead
Buried
Pipe
TMQC
TMQC
2015/4/13 TMQC 16
Long Range Insulated Pipeline
-18dB
-40 -20 0 2012
9
6
3
12
Clo
ck
-40 -20 0 20
1.51
0.5
0.25
0.1
0.05
0.025
0.01
0.005
Distance (m)
Am
p (
Log)
+F12
+F11
S42
+F9
S43
S44
+F7
+F6
+F5
S45
+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
TMQC Corrosion at Pipe Support
2015/4/13 TMQC 17
-18dB
-2.0 0.0 2.0 4.00
90
180
270
360
Angle
(deg)
-2.0 0.0 2.0 4.00.0
1.0
2.0
3.0
Distance (m)
Am
p (
Lin
ear)
-F3
-F2
-F1
+F1
+F2
+F3
+F4
+F5
TMQC
TMQC General Corrosion on pipe under the road
2015/4/13 TMQC 18
-18dB
-15.0 -10.0 -5.0 0.012
9
6
3
12
Clo
ck
-15.0 -10.0 -5.0 0.00.0
2.0
4.0
6.0
8.0
Distance (m)
Am
p (
Lin
ear)
+F4
+F3
+F2
+F1
-F1
-F2
-F3
-F4
-F5
-F6
-F7
Severe general corrosion TMQC
TMQC
2015/4/13 19
Overhead Pipeline
-26dB
0.0 5.0 10.0 15.0 20.00
90
180
270
360
Angle
(deg)
0.0 5.0 10.0 15.0 20.00.00
0.10
0.20
0.30
0.40
Distance (m)
Am
p (
Lin
ear)
+F1
+F2
+F3
+F4
+F5
+F6
+F7
+F8
-F1
-F2
TMQC TMQC
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)
Am
p (
Log)
-F1
-F2
-F3
+F2
+F1
+F3
+F4
P11_C
1
+F5
+F6
+F7
-F4
C2
-F5
P11_C
3
-F6
-F7
P11_C
4
-F8
-F9
Corrosion with 6 mm depth
Severe Corrosion
Mark the check point Remove Insulation
TMQC TMQC
TMQC Corrosion at Pipe Elbow
2015/4/13 21
-18dB
-6.0 -5.0 -4.0 -3.012
9
6
3
12C
lock
-6.0 -5.0 -4.0 -3.00.0
0.2
0.4
0.6
0.8
Distance (m)
Am
p (
Lin
ear)
-F3
-F4
-F5
5.08 mm 4.37 mm
TMQC TMQC
TMQC FEM and Experiment in TMQC
TMQC 22
土壤
管道 導波
導波洩漏
2015/4/13 TMQC
TMQC
2015/4/13 TMQC 23
Medium-Range Guided Wave Ultrasonic
Testing (MRUT)
TMQC
TMQC MRUT Wave Propagation
2015/4/13 TMQC 24
Forward wave
Reverse wave
Probe location
Defect
Reflected wave
TMQC
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
TMQC
2015/4/13 TMQC 26
Phased Array UT
TMQC
TMQC
2015/4/13 TMQC 27
PAUT Application- Corrosion B-scan Mapping
TMQC
TMQC PAUT-Pipe Inspection
2015/4/13 TMQC 28 TMQC
TMQC PAUT Application - Corrosion Mapping on Piping
-Automatic Ultrasonic Testing-
2015/4/13 TMQC 29 TMQC
TMQC
2015/4/13 TMQC 30
PAUT Application- Crack Detection
TMQC
crack distribution near the manhole of pressure vessel
TMQC
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
50m
m
30m
m
探頭前緣距離 120mm
TMQC
TMQC PAUT-Nuclear Power Plant Weld
-Automatic Ultrasonic Testing-
2015/4/13 TMQC 32 TMQC
TMQC PAUT-Pressure Vessel Weld
-Automatic Ultrasonic Testing-
2015/4/13 TMQC 33 TMQC
TMQC PAUT-Boiler Tube Weld Inspection
-Semi-automatic Ultrasonic Testing-
2015/4/13 TMQC 34 TMQC
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 : [email protected]
Contact : Lee Ping Hung ( [email protected])
2015/4/13 TMQC 35 TMQC
