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

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

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

API 1160 / POF SELECTION OF TOOL

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

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

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

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

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

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

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

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 ?

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

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

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