1. “Are Intelligent Pigs Intelligent enough?” PSC 2018 08th March 2018BY
n.v.suryanarayana raju
Chief Manager - Operations
hpcl
Vvspl – vishaka despatch station

2. BRIEF SUMMARY >> “ARE INTELLIGENET PIGS INTELLIGENT ENOUGH?
FLOW OF PRESENTATION
EVOLUTION OF TECHNOLOGY
SELECTION OF TOOL
TECHNOLOGY VIS-À-VIS TOOL RESULTS
STATISTICAL PARAMETERS IN TOOL RESULTS
TOOL DATASHEETS AND TOOL HISTORY
BENCH MARKING AND XYZ MAPPING
IS ILI RUN SUCCESSFUL
OTHER ASPECTS
TO SUM UP

3. INDUSTRY REVOLUTION NO.4
INDUSTRY . 4 / ADVANCED MANUFACTURING PROGRAMMING
INDUSTRY REVOLUTION NO.4

4. EVOLUTION OF TECHNOLOGY
Basic Technology
Magnetic Flux Leakage
Ultrasonic
Sensor Mounting
Axial / Circumferential / Helical Field
Compression / Shear wave / EMAT
Battery life and Higher Memory
Lead to Long line Inspection
Surface Mount Technology in Electronics lead to reduction in tool Sizes
Lead to short radius negotiability from original 6D
Other Technologies also evolved
Floating Smart Ball, Eddy Current tools
Optical Inspection Tools

5. API 1160 / POF
SELECTION OF TOOL

6. TECHNOLOGY VIS-À-VIS TOOL RESULTS
PIPE FLAWS AND HOW THEY TRANSLATE TO POF GRAPH
TECHNOLOGY VIS-À-VIS TOOL RESULTS
CIRCUMFERENTIAL FIELD MFL
AXIAL FIELD MFL

7. TECHNOLOGY VIS-À-VIS TOOL RESULTS
PIPE FLAWS AND HOW THEY TRANSLATE TO POF GRAPH
TECHNOLOGY VIS-À-VIS TOOL RESULTS
Electro Magnetic Acoustic Transducer Tool

8. STATISTICAL PARAMETERS IN TOOL RESULTS
POD – POI – Confidence Level
STATISTICAL PARAMETERS IN TOOL RESULTS
Extract of API : “The ability of an ILI technology to detect an anomaly is based on the depth and magnitude threshold for the particular anomaly. The probability of detection (POD), typically reported as an 80 % or 90 % confidence (typically this increases for larger anomalies), is controlled by a combination of depth, type, shape and possible location of the anomaly. Even if detected, the anomaly also needs to be correctly characterized, typically referred to as probability of identification (POI). Incorrect identification could result in an anomaly being erroneously characterized as non-injurious or non-actionable. The operator should understand the limitations of each type of tool prior to its use”
For Type of Tool and Technology these Parameters cannot be increased only option is increase Sample Size

9. STATISTICAL PARAMETERS IN TOOL RESULTS
Increase Sample Size >> POD – POI – Confidence Level
STATISTICAL PARAMETERS IN TOOL RESULTS
More than one Run or More than one technology Run is adopted too. POD - POI

10. TOOL DATASHEETS AND TOOL HISTORY
TOOL PROVENNESS
TOOL DATASHEETS AND TOOL HISTORY
POF STANDARD CATEGORIZATION:
Newly designed component with limited testing
2. Limited field operation (< 20 runs or < 500 km distance)
3. Multiple uses with clear history of components and
subsequent changes
THIS CAN TRANSLATE TO
Mechanical Design Version and Revision number
Electronics Design Version and Revision Number
Electronic Firmware Version and Revision Number

11. TOOL DATASHEETS AND TOOL HISTORY
MICRO – ELECTRONICS DESIGN
TOOL DATASHEETS AND TOOL HISTORY
Non Interlocked Piped processing
CURRENTLY NO VENDOR OPENLY DISCUSSES THESE ASPECTS

12. BENCH MARKING AND XYZ MAPPING
AT PROJECT STAGE – DOUBLE BEAD CAPPING WELD
TIME BASED AND MANGNETIC BENCH MARKING
XYZ MAPPING WITH DGPS CO-ORDINATING OR WITHOUT DGPS

13. EXTERNAL CORROSION CAN BE EASY TO SPOT AND SIZE
SAMPLE DIG VERIFICATIONS
IS ILI RUN SUCCESSFUL
EXTERNAL CORROSION CAN BE EASY TO SPOT AND SIZE
INTERNAL CORROSION DEFECT PROFILING CAN BE DONE ONLY BY UT C-SCAN MACHINES ONLY
WHAT IF AN UN-REPORTED DEFECT IS SPOTED IN THE SAME TRENCH ?

14. OTHER AREAS NEEDING ATTENTION Tool Wakeup times and tool run times
OTHER ASPECTS
PRE-RUN CHECKS
Tool Wakeup times and tool run times
Tool Electronic and Mechanical version numbers
DATA ANALYSIS
Mechanized Analysis Vis-À-Vis Manual Analysis
PIPE FAILURES AFTER PIG RUN
A Project Closure Issue
Pull Thru Tests
A Test Pipe with Owner relevant Pipe flaws

15. Is one focused on Statistical outcome of results too
To Summarize
TO SUM UP
Is one focused on various other inter-connected complex selection process
Is one focused on Statistical outcome of results too
Selection of Tool – who does it ?
Technology is Sound
Statutory repercussions also force more frequent ILI Inspections and development of new Technologies: Example EU North Sea Pipelines
International Practice: Long Term Vendor – Owner Relationship act as one Bulwark to support this inverted Pyramid

16. THANK YOU, all sIRs VERY MUCH FOR YOUR KIND ATTENTION AND TIME