GULF TECHNICAL INSPECTION SERVICES Conventional and Advanced Inspection services 1 11/1/2023 Sensitivity: LNT Construction Internal Use 2 Company Introduction Gulf Technical Inspection Services LLC, herein after referred as GTIS, was founded in 2010 with the objective of developing its business and progress in Non-Destructive Testing (NDT) and Post Weld Heat Treatment (PWHT) industry. The company started its activities with the execution of NDT and PWHT services to several Oil & Gas industries in the Sultanate of Oman. Our aim is to provide the highest quality of service and attain the leader in Local Industry and beyond through Excellence in Safety, Quality of Service, & Total Customer Satisfaction. At GTIS, We want to inspire our customer’s sense of confidence that their quality needs are being met by the best in the business. All our workforce is highly trained and strives to provide an excellent service with exceptional integrity, a superior work ethic, extensive knowledge, and professional character. GTIS have obtained Management System Certifications for ISO9001: 2015, 14001:2015(EMS) and ISO 45001: 2018 (Occupational Safety and Health). Our Head office in Muscat, Sultanate of Oman and having branch offices at Sohar, Salalah and Duqm. 11/1/2023 Sensitivity: LNT Construction Internal Use 3 What we do? Company Activities: We provide high quality services in the following disciplines. Conventional Non Destructive Testing: Gamma Radiography Testing X-Ray Radiography Testing Using Directional X-Ray Unit X-Ray Radiography Pipeline Crawlers From 6” To 60” Diameter Ultrasonic Testing (Thickness Gauging & Manual Weld Scan ) Liquid Penetrant Testing & Magnetic Particle Testing Hardness Testing Ferrite Measurement Positive material identification (PMI) Sensitivity: LNT Construction Internal Use Post Weld Heat Treatment: Electrical Induction Using Coils Pre Heating Services Advanced NDT Inspections: Time Of Flight Diffraction (TOFD) Phased Array Ultrasonic Testing (PAUT) Eddy Current Inspection (ET) Internal Rotating Inspections Services (IRIS) Corrosion Mapping Using AUT and MFL Boroscope / videoscope Vacuum box testing (Leak testing) ECT/MFL/IRIS Tube inspection Magnetic flux leakage for tank floor bottom plate 11/1/2023 4 Why this presentation? To propose PAUT & ToFD inspection in lieu of radiography for pipeline as per project requirement 11/1/2023 Sensitivity: LNT Construction Internal Use 5 What code says? ASME Sec V article 4 mandatory appendix III, IV, V, IX and ASME Sec VIII, div 2 section 7 clearly mandates the requirement for PAUT and ToFD inspection in Pressure vessels ASME Sec V article 4 mandatory appendix III, IV, V, IX and ASTM B 31.3 Appendix R Clearly mandates the requirement for PAUT and ToFD inspection in Pressure piping. 11/1/2023 Sensitivity: LNT Construction Internal Use 6 Why PAUT & ToFD over Radiography? No Radiation hazard No chemical handling No legal permits requirements to handle radioactive material Real time results Digital storage of results High volume inspection No limitation in size and thickness Un interrupted construction progress (Other works can be done in close proximity) High probability of detection (POD) for planar flaws. Accuracy in results Ability to assess through-wall depth attributes to accurately determine the defect location Calculation of defect height measurements as an indicator of flaw severity Ability to discriminate among defects stacked throughout the material thickness in a proximate circumferential location Equipment compact and portable Sensitivity: LNT Construction Internal Use 11/1/2023 Extent of examination for the given scope 7 Reference: Project Specification Volume 2, Book 4 11/1/2023 Sensitivity: LNT Construction Internal Use Project Scope 8 CLIENT CONSULTANT CONTRACTOR PROJECT- REINFORCEMENT OF AD DHAKHILIYAH WATER TRANSMISSION SYSTEM PHASE-II PUBLIC AUTHORITY FOR WATER ENERGOPROJEKT ENTEL LLC L&T CONSTRUCTION BOQ FOR RADIOGRAPHY SR.NO. Alignment 1 2 3 4 5 AL-1 AL-2 AL-3 AL-4 AL-5 6 AL-6 7 8 9 10 11 12 13 AL-7 AL-8 AL-9 AL-10 AL-11 AL-12 AL-13 SR.NO. 1 Sensitivity: LNT Construction Internal Use Pipe Thk. Total INCH 68 64 64 60 60 11.91 9.53 9.53 9.53 9.53 INCH DIA. 17,507.28 37,467.52 10,537.28 21,928.20 5,376.30 " Length 71,779.85 153,616.83 43,202.85 89,905.62 22,042.83 56 9.53 26,134.92 107,153.17 56 9.53 56 9.53 56 9.53 56 9.53 48 8.74 36 6.35 32 6.35 TOTAL MANUAL UT DISCIPLINE QTY. UT TECHNICIAN Level II 1 MAGNETIC PARTICLE TESTING 445.48 464.80 8,462.44 27,217.12 30,025.92 2,595.24 6,238.72 194,401 1,826.47 1,905.68 34,696.00 111,590.19 123,106.27 10,640.48 25,578.75 797,045.00 Description 1.MPS-Rusail(R) 2.Rusail(R)-BPS1 3.BPS1-BID ESR 4.BID ESR - BPS2 5.BPS2-SAMAIL ESR 6.BPS2SAMAIL ESRExisting 7. Existing CONNECTION BPS3 8. BPS-3 - Existing PH-1 9. BPS3-Existing PH-1 - SR 10. SR-Future ESR 11. SR-Future ESR 12. SR-Future ESR 13. SR-Future ESR Pipe Dia Pipe Dia M 1.7 1.6 1.6 1.5 1.5 1.4 1.4 1.4 1.4 1.4 1.2 0.9 0.8 DURATION 6 MONTH Total 11/1/2023 9 Phased array Ultrasonic testing Principle : Same as conventional Pulse-Echo A-scan i.e.., “reflection/refraction of sound energy”. It differs with Pulse-Echo A scan UT in generation and receiving of ultrasound. A conventional pulse-echo UT probe consists of a single piezoelectric element, while that for phased-array UT has multiple piezoelectric elements i.e., one PA probe is a combination of several conventional probes in a single casing. Finally a PA Probe is nothing but an array of transducer elements in which the timing of the elements' excitation can be individually controlled to produce certain desired effects, such as steering the beam axis or focusing the beam. Beam Forming 11/1/2023 Sensitivity: LNT Construction Internal Use 10 Phased array Ultrasonic testing To focus the ultrasonic beam, time delays are applied to the elements to create constructive interference of the wave fronts, allowing the energy to be focused at any depth in the test specimen undergoing inspection. This principle is illustrated in the right picture, where delay laws have been computed to focus the acoustic beam at a specified depth and angle. As shown in the figure, each element radiates a spherical wave at a specified time. The super position of these wavelets results in an almost planar wave front at the specified location. Beam focusing principle for (a) Normal and (b) angle incidences 11/1/2023 Sensitivity: LNT Construction Internal Use Phased array Ultrasonic testing 11 Linear scan Sectorial scan Linear Focal Law beyond First Leg and Sectorial Scan Display Typical Scan plan Typical scan and its respective image -30° to 30° Sectorial Scan using L wave Wedges Typical PAUT display (A-scan, S-scan, C scan) 11/1/2023 Sensitivity: LNT Construction Internal Use 12 Time of flight diffraction (ToFD) Based on diffraction, so relatively indifferent to weld bevel angles and flaw orientation Uses time of arrival of signals received from crack tips for accurate defect positioning and sizing Precise sizing capability makes it an ideal flaw monitoring method Quick to set up and perform an inspection, as a single beam offers a large area of coverage Rapid scanning with imaging and full data recording Highly sensitive to all weld flaw types 11/1/2023 Sensitivity: LNT Construction Internal Use ToFD Working principle 13 Transmitter Back wall Receiver Upper tip Lateral wave Upper tip Lateral wave Lower tip Lower tip Back-wall reflection 11/1/2023 Sensitivity: LNT Construction Internal Use 14 Advantages Ability to sweep sound beam through a range of angles without moving the probe, normally 40 to 70 degrees. Ability of interrogating defect with different angles increases the probability of detection (POD) of defects regardless of their orientation. High inspection speeds over conventional UT employing raster scanning. Accuracy in defect plotting, gives precise readings for depth, defect orientation. Multiple view formats like S- Scan, C- Scan, B-Scan possible. Inspection of coarse-grained welds like DSS, Inconel, SS are possible with Dual Matric Array probes. Sensitive to virtually all types of defects regardless of orientation. Provides high speed inspection of heavy walled vessels even up to 250 mm thickness unlike radiography which would require longer exposure times and slower films for sensitivity. The tip diffraction technique used in TOFD is so far the most accurate height sizing technique available. 11/1/2023 Sensitivity: LNT Construction Internal Use 15 Limitations Cost Impact. Requirement of interpretation skill is relatively higher compared to radiography 11/1/2023 Sensitivity: LNT Construction Internal Use 16 Scanners Holds up to 12 probes Probes independently loaded with spring Independent suspension on all 4 magnetic wheels for uneven surfaces Compact (350mm x 325mm) and lightweight aluminium frame (3kg) Accurate tracking via guide chain or laser Operates in any orientation and from 4.5” OD through to flat plate Splash-proof, spring-loaded wheel encoder 11/1/2023 Sensitivity: LNT Construction Internal Use 17 Weld Coverage • Since our max thickness is 12 mm PAUT shall act as a main technique. Even though PAUT covers complete weld volume, we prefer to use ToFD to have double confirmation. • Both are compliment technique to each other. PAUT Coverage ToFD Coverage 11/1/2023 Sensitivity: LNT Construction Internal Use 18 Typical scanning in pipeline 11/1/2023 Sensitivity: LNT Construction Internal Use 19 Sample validation block design 11/1/2023 Sensitivity: LNT Construction Internal Use 20 No of Blocks required (as per scope) 11/1/2023 Sensitivity: LNT Construction Internal Use 21 No of Blocks required (as per scope) Total PAUT Reference blocks required – 3 no.s Total TOFD reference blocks required - 4 no.s Total Validation blocks required – 7 no's (each joint requires 1 no.) 11/1/2023 Sensitivity: LNT Construction Internal Use Sample record Weld Length Defect Weld Thickness 22 Sensitivity: LNT Construction Internal Use 11/1/2023 RT Productivity 23 DWSI where SWSI is not feasible SWSI Joint Details With 25 Ci. Time required for each joint with D7 film using SWSI technique No. of joints can be done in 10 Hrs. shift per RT crew (Set up time considered) Joint Details No. exposures Required With 25 Ci. Time required for each exposure with D7 film using DWSI technique With 25 Ci. Time required for each joint with D7 film using DWSI technique No. of joints can be done in 10 Hrs. shift per RT crew (Set up time considered) 68’’x11.91 mm 18 min. 3 64’’x9.53 mm 14 min. 3 60’’x9.53 mm 11 min. 5 56’’x9.53 mm 68’’x11.91mm 4 1.6 Hr. 6.4 Hr. 1 or 2 9 min. 7 48’’x8.74 mm 64’’x9.53 mm 4 1.1 Hr. 4.4 Hr. 2 6 min. 9 36’’x6.35 mm 60’’x9.53 mm 4 1 Hr. 4 Hr. 2 4 min. 14 32’’x6.35 mm 56’’x9.53 mm 3 54 Min. 2.7 Hr. 3 4 min. 14 48’’x8.74 mm 3 36 Min. 1.8 Hr. 3 36’’x6.35 mm 3 12 Min. 36 Min. 6 32’’x6.35 mm 3 12 Min. 36 Min. Sensitivity: LNT Construction Internal Use 11/1/2023 6 AUT Productivity 24 Joint Details No. of joints can be done in 10 Hrs. shift per PAUT-TOFD crew 68’’x11.91 mm 3 64’’x9.53 mm 3 60’’x9.53 mm 4 56’’x9.53 mm 4 48’’x8.74 mm 10 36’’x6.35 mm 12 32’’x6.35 mm 12 11/1/2023 Sensitivity: LNT Construction Internal Use 25 Procedure Procedure shall minimum cover the following as per the requirement given in ASME sec V article 4 Table III – 421 & Table IV 421 Procedure qualification requirement Personnel qualification Equipment qualification Calibration/validation block design details Scan plan Examination coverage Scanning technique Flaw sizing technique Acceptance criteria Validation process 11/1/2023 Sensitivity: LNT Construction Internal Use 26 Resource Topaz 32 portable equipment – 2 Nos Magman Scanner – 2 Nos PCN / CSWIP PAUT & TOFD Level 3 – 2 Nos PCN Level II Operators- 2 Nos 11/1/2023 Sensitivity: LNT Construction Internal Use 27 Projects BP Khazaan CPF Phase II Yibal Khuff Project Duqm Refinery project 11/1/2023 Sensitivity: LNT Construction Internal Use 28 Client Approvals Petroleum development of Oman (PDO) British Petroleum (BP) Oman Gas Company (OGC) 11/1/2023 Sensitivity: LNT Construction Internal Use 29 Our Clients 11/1/2023 Sensitivity: LNT Construction Internal Use 30 Questions??? Thank you everyone for your attention 11/1/2023 Sensitivity: LNT Construction Internal Use