NDT Services

Non-Destructive Testing (NDT)

The Ocean Independent Oil and Energy Services (OIS)company, , established in 2008, has emerged as a prominent player in the field of on-destructive testing (NDT). Specializing in conventional methods, OIS has steadily solidified its position by successfully executing numerous projects and consistently meeting client satisfaction.

In response to evolving client needs, the company has diversified its scope, extending its expertise to encompass all facets of industrial installation inspection, from construction phases to operational stages. Additionally, OIS has integrated advanced inspection techniques and mechanical construction work into its repertoire, ensuring comprehensive service delivery.

In 2021, the company achieved accreditation from the Algerian Accreditation Authority in accordance with ISO 17020standards, covering the following test methods:

Visual Testing (VT)
Radiography (RT)
Magnetic Particle Testing (MT)
Ultrasonic Testing (UT)
Liquid Penetrant Testing (PT)

This accreditation underscores our commitment to maintaining the highest standards of quality and competence in the field of non-destructive testing.

We, at Ocean Independent for Oil and Energy Services, work to provide integrated inspection solutions covering:

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Remote Visual Testing (RVI)

RVI is the inspection of objects or areas generally inaccessible to the eye without disassembling surrounding structures or machinery..
t allows inspectors to find out hidden discontinuities before they will cause essential issues. poor welding, surface defects, corrosion pits, general condition, degradation, blockages and foreign materials..
The RVI gadget penetrates distant places, utilizing small openings and sending photographs without delay lower back to the observer or to a video reveal.

Application
- RVI allows for visual assessment of internal and external conditions without the need for manual intervention or shutdowns.
- his facilitates early detection of corrosion, leaks, and structural defects, enhancing safety, maintenance efficiency, and asset integrity management across upstream, midstream, and downstream operations.
Advantages
- eliminates the need for personnel to enter hazardous or confined spaces, reducing the risk of accidents and exposure to potentially harmful environments.
Personnel Qualifications
Our inspectors are highly qualified, holding – infrared thermography inspection in accordance with the in accordance with SNT TC 1A system..
This qualification process ensures that our personnel possess the necessary knowledge, skills, and expertise to perform remote field testing
Equipment
Equipped with following equipment:
- The Everest XLG3™ (GE):
  The Everest XLG3™ VideoProbe® is today’s most revolutionary remote visual inspection (RVI) tool – provides significantly improved inspection capabilities to boost productivity in your operations
  With a host of advanced features, such as:
  QuickChange probes that quickly reconfigure probe diameter and length
  and real-time communications for collaboration during live inspections
  the versatility you need for fast, efficient, and accurate decision making.
- Accessories for cleaning and preparing the environment for inspection.

Radiographic Testing (RT) / Radiography Profile (RP) Corrosion

Radiography is a nondestructive test method that utilizes electromagnetic energy (radiation) from X- rays or gamma rays in order to detect both surface and internal discontinuities.
Radiography shadow shots can be used to inspect process piping, pressure vessels and valves, providing an easily viewed and permanent record of the component that has been inspected.

Application
- For new fabrication weld inspection
  Efficient inspection of large volumes of components
  Code compliant inspection (ASME Section V, ASME VIII for pressure vessels, ASME B31.1 and B31.3 for piping, API 1104 for pipelines, and others)
  For In-service weld and material inspection. Often, we determine the extent of internal and/or external corrosion/erosion in process piping,
  Used for most metal and non-metal materials
Advantages
- Highly reproducible
- Data is stored for future comparison or audits
- Field ready
- Systems are portable and battery powered
- Light enough to easily take onto scaffolding
- Powerful setup tools to aid technicians in the field
Personnel Qualifications
Our radiographers and inspectors are highly qualified, holding certifications at Level 1 and Level 2 in accordance with the in accordance with SNT TC 1A system..
This qualification process ensures that our personnel possess the necessary knowledge, skills, and expertise to perform radiographic testing
Equipment
Equipped with various equipment, including:
- X-ray generators
- Gamma-ray TSI andDELTA for Iridium 192 isotope
- Crawler Crawler IRIS 6 andIRIS 120 for pipelines
- radiation detectors
- automatic film developing equipment
- film viewers
- densitometers
and various accessories.

Magnetic particle Testing (MT)

Magnetic particle inspection (MT) is a non-destructive testing ( (NDT) ) method used to detect surface and slightly subsurface flaws in ferromagnetic materials (such as carbon steel)).It is used routinely to inspect welds, piping, pressure vessels and structural steel components..

Application
- New fabrication welds for code compliance to:
  ASME Section V for pressure vessels
  ASME B31.1 andASME B31.3 for piping
  API 1104 for pipelines
- Castings and forgings, valves and their components,
- machined parts
- pressure vessels, cranes and structural steel welds for cracks, non-fusion, cold lapsCold Laps)
- In-service weldsIn-Service Welds)
Advantages
- Flaws are highly visible
- The equipment is : Portable and can be battery powered
- Light enough to take easily onto scaffolding
- Non-hazardous to operations or other nearby personnel
- Very good sensitivity to:
  شقوق الإجهاد (Fatigue Cracking)
  ضعف الانصهار (Tight Fusion)
  التصدعات الناتجة عن الهيدروجين (HIC)
  التصدعات الناتجة عن الإجهاد والتآكل (SCC)
Personnel Qualifications
Our inspectors are highly qualified, holding infrared thermography inspection (Level 2) at (Level 2) n accordance with the in accordance with SNT TC 1A system..
This qualification process ensures that our personnel possess the necessary knowledge, skills, and expertise to perform magnetic particle testing
Products
Equipped with following products:
- AC Magnetic Yoke: MATCON MAT 230
- The Permanent Yoke: MAG-1 Magnetis ideal for the effective magnetization of components for crack detection, particularly where the use of electromagnetic yokes is impractical or prohibited for safety reasons.
- products: Srem:
  FLUXO 3 (Black magnetic Ink)
  FLUXO 4 (White contrast paint)
- Accessories for cleaning and preparing the surface or piece for inspection, and clean up after carrying out test.

Portable Hardness Testing (HT

Portable Hardness Testing (HT) is a non-destructive testing (NDT) method utilized to obtain the hardness value of a material..
تستخدم شركة OIS uses the Hardness Testing Technology to provide clients the information they require about the materials they are utilizing..

Application
- Ferrous and non-ferrous metals and alloys, and select non- metallic materials
  Welds andWeld Overlays)
  weld heat affected zones (HAZ’s)
  castings and forgings
  Piping andStress Relieved Material)
  machined parts
  pressure vessels, and structural steel
  Damaged materials as part of aFailure Analysis)
  Welds and to verify material compliance to:
  ASME Section IX
  NACE MR0175 / ISO 1515
Advantages
- Fast results and reporting to the client
- Field ready
- Highly portable tools can be used in most locations
Personnel Qualifications
Our inspectors are highly qualified, holding VT infrared thermography inspection (Level 2) in accordance with the in accordance with SNT TC 1A system..
This qualification process ensures that our personnel possess the necessary knowledge, skills, and expertise to perform portable hardness testing.
Products
Equipped with following equipment:
- MH100 series pocket hardness meters, also known as pen- type hardness tester, based on Leeb Hardnessmeasuring principle, quick and easy on-site test the hardness of series metal materials,
- support free conversion between ريختر (Richter)، برينيل (Brinell)، روكويل (Rockwell) hardness scale and others.
- integrated compact design, small size, portable, highly integrated, stable and reliable performance, supporting data transfer and print the stored function.
- Widely used in failure analysis of metal processing and manufacturing, special equipment, permanent assembly, inspection and other fields.
- Particularly suitable for large parts and non-removable part of the site hardness testing.
- Accessories for cleaning and preparing the surface or piece for inspection, and clean up after carrying out test.

Penetrant Testing (PT)

Penetrant Testing (PT) is used to detect casting, forging and welding surface defects such as hairline cracks, surface porosity, leaks in new products, and fatigue cracks on in-service components.
يُعد PT is a non- destructive examination method used to locate surface breaking discontinuities in non-porous materials (metals, plastics, or ceramics). This method may be applied to ferrous and non-ferrous materials

Application
- Welds andWeld Overlays)
- castings and forgings
- valves and their components
- machined parts
- pressure vessels, clad vessel lining
- structural steel
- New fabrication weld inspection
- Code compliant inspection
  ASME Section V for pressure vessels
  ASME B31.1 and3 for pressure vessels
  API 1104 for pipelines
- In-service welds
- Ferrous and non-ferrous components
Advantages
- High visibility of indications
- Low cost and fast results
- Field ready
- Highly portable tools can be used in most locations Can operate with battery power as well as supplied power when available
Personnel Qualifications
Our inspectors are highly qualified, holding infrared thermography inspection (Level 2) in Penetrant Testing (PT) n accordance with the in accordance with SNT TC 1A system..
This qualification process ensures that our personnel possess the necessary knowledge, skills, and expertise to perform PT efficiently.
Products
Equipped with following products:
- products: Chemetall:
  المادة المخترقة (Penetrant( Checkmor 240
  المطوّر (Developer( (LD7)
  مزيل المادة المخترقة (Penetrant Remover( S76)
- products: Srem:
  المادة المخترقة (Fluxo P172)
  المطوّر (FLUXO R175)
  مزيل المادة المخترقة (FLUXO S190)
- Accessories for cleaning and preparing the surface or piece for inspection, and clean up after carrying out test.

In addition to advanced techniques that include:

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Phased Array Ultrasonic Testing (PAUT) / Corrosion mapping

The Phased Array Ultrasonic Testing (PAUT) employs advanced ultrasonic technology to conduct precise inspections of materials and components. y electronically controlling multiple ultrasonic beams, PAUT offers superior coverage and resolution for flaw detection and sizing.
Its efficiency and accuracy make it a cornerstone of non-destructive testing across industries, ensuring the integrity of critical assets.

Application
- Welds and weld overlays, piping, pressure vessels, clad material, storage tanks and structural steel
- This technique can be used during shutdowns, or on stream
- Complex geometries with a single probe.
Advantages
- High degree of repeatability. Position and size data for every flaw can be compared for repeat scans of the same area to track flaw growth or corrosion rates both generally and for individual pits
- Inspecting a large portion of the component’s cross-section
- The ultrasonic beam may be both steered (change of angle), focused and scanned without moving the probe
- Portable, battery operated testing device
- Inspection can be performed on in-service equipment
- Faster inspections and can be combined with TOFD scan
Personnel Qualifications
Our inspectors are highly qualified, holding certifications at infrared thermography inspection in accordance with the in accordance with SNT TC 1A system. In both UT andPAUT.
This qualification process ensures that our personnel possess the necessary knowledge, skills, and expertise to perform phased array testing.
Equipment
Equipped with following equipment:
- The SIUI SYNCSCAN 3 (64 :128 PR) (UT/PAUT/TOFD/TFM)
- مجموعة من SIUI probes and wedges collection and wedges collection for inspection of a large range of welding configuration and materiel.
- CPS 02A Chain scanner for PAUT and/or TOFD inspection
- The PA Crawler for Corrosion Mapping MPS-01A
- The Olympus EPOCH 1000i (UT / PAUT)
- مجموعة من SIUI Olympus and wedges collection for welding inspection and corrosion monitoring
- Calibration and validation blocs for different materials, application and thickness range

Time of Flight Diffraction (TOFD)

This ultrasonic inspection technique is commonly performed on welds and weld overlays, piping, pressure vessels, clad material, storage tanks and structural steel.
s fabricated heavy wall vessels and piping can be thoroughly assessed for fabrication flaws with TOFD.

Application
- To verify compliance with fabrication requirements for piping and vessels in accordance to standards such as:
  ASME Section I, Code Case 189, or ASME VIII Division 1 and 2
- For in-service defect monitoring
- For detecting defects during the manufacturing process
Advantages
- High degree of repeatability
- Position and size data for every flaw can be compared for repeat scans of the same area to track flaw growth or corrosion rates both generally and for individual pits
- Not limited by defect orientation
- Precise defect sizing capability
- Sensitive to all kinds of defects
- Portable, battery operated testing device
- Portable, battery operated testing device On-line, volume inspection
- Very fast scanning
- Set-up independent of weld configuration
- Amplitude insensitive, acoustical coupling less critical
Personnel Qualifications
Our inspectors are highly qualified, holding certifications at Level 2 in accordance with the SNT TC 1A system. In both UT and TOFD techniques.
This qualification process ensures that our personnel possess the necessary knowledge, skills, and expertise to perform TOFD testing
Equipment
Equipped with following equipment:
- The SIUI SYNCSCAN 3 (up to 04 TOFD channels)
- SIUI probes and wedges collection for inspection of a large range of welding configuration and materiel.
- The CPS 02A Chain Scanner for PAUT and/or TOFD inspection
- Calibration and validation blocs for different materials, application and thickness range

Long Range Ultrasonic Testing / Guided Waves Testing (LRUT/GWT)

Guided wave ultrasonic testing detects corrosion damage and other defects over long distances in piping. A special tool Transducer Ringg) is clamped around the pipe and transmits guided waves in both directions along the pipe.
Reflected signals from defects and pipe features such as welds are received by the transducer ring and sent to the main unit.

Application
- InspectSleeved Road Crossings)
- DetectRiser Soil to Air Interface Losses)
- DetectCorrosion Under Insulation – CUI)
- DetectPipe Rack Support Losses In-Situ)
- Inspect buried or insulated lines
- Difficult to access locations
Advantages
- Inspects difficult to access components without extensive excavation or insulation removal
- Portable, battery powered equipment
- Sophisticated software routines help identify and classify pipe signals
- Rigorous operator training and certification with individual electronic keys which activate the system and track its use by each operator
- Embedded reporting software allows the operator to analyze the results and produce a report on the spot
Personnel Qualifications
Our LRUT inspectors are highly qualified, holding GUL (Guided Ultrasonic Limited) certifications at Levels 1 and 2 and UT Level 2 in accordance with the in accordance with SNT TC 1A system..
This qualification process ensures that our personnel possess the necessary knowledge, skills, and expertise to carry out LRUT inspection and interpret results.
Equipment
Equipped with following equipment:
- The G4 Mini 3 (designed for all pipe and tube applications)
- rings GUL Solid rings 2” and 4”
- rings GUL Compact t rings (6”/ 8”/ 10”/ 12”/ 14”/ 16”/ 18”/ 20”/ 24”) with 3 and 6 meters’ cables kit.
- برنامج Wave Reader (Wavemaker) software for data interpretation and reporting.

Magnetic Flux Leakage (MFL)

Tank Floor MFL scanning (MFL)
g is a non-destructive examination method which uses a magnetic field to detect corrosion and pitting in carbon steel.
A powerful magnet is scanned close to the surface to ‘saturate’ the steel with the magnetic field.

Application
- On storage tank bottoms for all industries: upstream, mid- stream, petrochemical, refineries
- To identify soil and product side metal losses, pitting and general corrosion
Advantages
- This technique is fast with up to 1 m/s pulling speed through tubes.
- Minimal set-up time
- Yields reliable and economic qualitative tank floor assessments.
- High sensitivity: acceptable sensitivity can be obtained through up to 12.5 mm of combined steel and coating thickness (12.5 mm)
  Requires access to only one side of the material
Personnel Qualifications
فاحصونا المتخصصون في تقنية MFL inspectors are highly qualified, holding SILVERWING (Eddyfi) في المستويين الأول والثاني، بالإضافة إلى MT Level 2 in accordance with the in accordance with SNT TC 1A system..
This qualification process ensures that our personnel possess the necessary knowledge, skills, and expertise to perform MFL efficiently.
Equipment
Equipped with following equipment:
- The SILVERWING (EDDYFI) Floormap 3 Di-R (64 channels)
- برنامج SIMS Reporting Suite software for data interpretation and reporting.
- Calibration plats 4, 6, 8, 10 mm thickness.

Tube inspection (Eddy Current ET - Remote Field RFT - Near field NFT)

تستخدم شركة OIS OIS uses ECT(including Remote Fiel (RFT) andNear Field (NFT)) to detect pits, corrosion, erosion, cracking, and others, in carbon steel (RFT) stainless steels, brass, titanium, Inconel, copper, copper-nickel, and other non-ferrous tubes.

The tubes must be free of obstructions. However, the cleaning required is minimal.

Application
The tubes within heat exchangers and boilers are subjected to high temperatures, pressures, and corrosive environments, making them susceptible to degradation over time.
The Eddy Current inspection (ET) is widely employed for the examination of these tubes due to its ability to detect and characterize surface and near-surface defects such as corrosion, erosion, cracking, and wall thinning.
Advantages
- This technique is fast with up to 1 m/s pulling speed through tubes
- Couplants are not needed. Consequently, contaminants are not introduced during the inspection.
- The technique identifies large and small volume pits.
- A total 100% of the surface of the tubes is inspected, with 360° coverage through the length.
- All the data is stored for review.
Personnel Qualifications
Our inspectors are highly qualified, holding infrared thermography inspection (Level 2) in accordance with the in accordance with SNT TC 1A system. in Eddy Current inspection (ET) for Tube inspection.
This qualification process ensures that our personnel possess the necessary knowledge, skills, and expertise to perform all eddy current testing (ET / RFT / NFT) and interpret the results.
Equipment
Equipped with following equipment:
- The NORTEC 600D (OLYMPUS)
- Olympus tube probes for ET / RFT / NFT applications in different tube material, diameters and thickness.
- Calibration tubes with artificial flaws (notches, SDH, holes…) for different materials, application and thickness.

as well as:

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Positive Material Identification (PMI)

Positive Material Identification (PMI) is the analysis of a metallic alloy to establish composition by reading the percentage quantities of its constituent elements.
The object of this nondestructive testing method is to identify metal alloys in place using a portableX-Ray Fluorescence – XRFthat determines the elemental composition of the material.

Application
- To test ferrous and non-ferrous metallic materials,Stainless Steelsand Monel,Inconel,Hastelloy, Aluminum alloys, nickel based alloys,Exotic Materials)
- While verifying material compliance in power and petrochemical industries
- To inspect valves and valve components, pipe, fittings, machined parts, castings, forgings, bolts and stock items
- To inspect welds andWeld Overlays)
- To verify compliance of new and in-service pressure vessels, plate material, and structural steel
Advantages
- Rapid and accurate analysis
- Highly portable digital technology, can be used on site
- Certifies components requiring NACE MR0175 / ISO 15156
- Leaves no trace of testing on test sample
- Care must be taken to ensure that the surface of the test specimen is representative of the material as a whole
- The instrument must be able to maintain surface contact with the material
Personnel Qualifications
Our inspectors are qualified, holding certifications at : (Level 2 Visual Inspection) in accordance with the in accordance with SNT TC 1A system..
Equipment
Equipped with following equipment:
- The Oxford X-MET5100 Hand-held XRF Analyzer with Revolutionary Light Element analysis, no awkward vacuum pumps or helium bottles
- Substantially faster analysis and throughput
- Low detection limits: ppm level analysis in 10 seconds
- Totally non-destructive testing
- Traceable Empirical Calibration to certified reference materials
- Fast and reliable identification of wide range of grades
- Withstand temperatures up to 400°C / 750°F
- Analyze weld beams down to 2 mm with optionalWeld Beam Collimator

Ferrite Test

Ferrite material analysis is a non-destructive test (NDT) method that rovides important information for austenitic stainless steel and duplex materials.
The percentage or amount of δ-Ferrite allows for mechanical analysis of material corrosion susceptibility, mechanical properties, application, and operational reliability.

Application
- Austenitic stainless steel/Duplex stainless steels Welds (tubing, etc.)
- Normal construction steel with Austenitic chrome alloy steel
- Weldments, Castings, Forgings,Weld Overlays).
- Weld materials, Butt/fillet welds
- Stainless weld overlays on non-ferrous interfaces
Advantages
- Rapid and accurate analysis
- Highly portable digital technology
- Variable calibration in both Ferrite Number (FN) and % Ferrite (FN) using AWS Standards.
- Testing instrument meets all requirements of ANSI/AWS A4.2 and DIN EN ISO 8249.
- Calibration is traceable to internationally approved IIW secondary calibration standards
Personnel Qualifications
Our inspectors are highly qualified, holding VT infrared thermography inspection (Level 2) in accordance with the in accordance with SNT TC 1A system..
This qualification process ensures that our personnel possess the necessary knowledge, skills, and expertise to perform this testing method..
Equipment
Equipped with following equipment:
- The SOFRANEL MF300F:
  Digital device allowing the measurement of ferrite content or quantity.
  Four probe models available (interchangeable up to 5 on one device)
  Standard P10 probe Ø 10 mm suitable for most applications
  Straight probes P46 و P46R for small surfaces (6 x 4 mm)
  Standard P10ac cooled probe for hot measurements
  Supplied in a case with a certificate and five calibration shims

Leak Test (Vacuum Box Testing)

Vacuum box testing (Leak Test) is a non-destructive examination (NDT) used when trying to locate weld seam leaks.
A vacuum box and a compressor create a high or low pressure vacuum while a detergent solution is applied to the test area. The detergent bubbles, making leaks visible within the created pressure envelope..

Application
- لحامات التراكب (Lap weldsandButt weldsandShell to annular welds).
- Piping systems and pressure vessels
- Tank bottoms
- TheERW seamed pipesin pipelines
- Objects on which a pressure differential can be created across the area to be examined
Advantages
- Provides an immediate indication visual of the location of any leaks present
- Can detect small leaks within a given area
Personnel Qualifications
Our inspectors are qualified, holding certifications at holding (VT) and/or اختبار التسرب (LT) – infrared thermography inspection (Level 2) in accordance with the in accordance with SNT TC 1A system..
This qualification process ensures that our personnel possess the necessary knowledge, skills, and expertise to perform this testing method.
Equipment
Equipped with following equipment:
- A (Flat Bottom Vacuum Box Bubble Leak Testing):
  Flat Bottom box for testing butt welds on flat surfaces
  Operates using compressed air
  Dimensions: 00 23.00" x 8.00" x 6".
- An (Inside Corner Vacuum Box Bubble Leak Testing):
  Corner vacuum boxes are specifically designed for testing the inside corner, where the bottom meets the sidewall at 90 degrees.
  Operates using compressed air
  Dimensions: 20 20"L x 5 1/4"W x 5 1/4".

Infrared Thermography Testing (TT)

Infrared thermography is a non-destructive testing technique (NDT) that actually determines the amount of infrared energy reflected, transmitted, or absorbed by an object.
This non-contact analysis detects temperature differences on the surfaces of materials or structures.
This rapid approach to financial management, coupled with well-trained staff and site-specific reporting software, makes it an invaluable asset for many applications.

Application
- Furnace heaters, including both internal and external refractory lined equipment
- Monitoring Steam-Air Decoking.
- TheOptical Gas Imaging(including the ability to detect most volatile organic compounds) (VOCs).
- Electrical components
- Tank level andFlare Inspections).
Advantages
- Rapid and economical
- Highly reproducible
- Site specific tailored reports
- Data is stored for future comparison or audits
- Rapid results andTrending Analysis).
- Systems are portable and battery powered
- They areNon-intrusiveand can quickly locate anomalies
- Visual representation and real time data on each report
Personnel Qualifications
Our inspectors are highly qualified, holding infrared thermography inspection (Level 2) infrared thermography inspection certification ( in accordance with SNT TC 1A system..
This qualification process ensures that our personnel possess the necessary knowledge, skills, and expertise to perform this testing method..
.
Equipment
Equipped with following equipment:
- Camera HIKMICRO M11W IR:
  Temperature reading range: 20 up to +550°C
  A Bolometer Matrix with a resolution of 192 × 144 Pixel
  Thermal sensitivity 40 mK
  Frequency: 25 Hz
  Touchscreen, with Wi-Fi
- Highly advanced thermal imaging camera to provide real time precise data.

Non-Destructive Testing (NDT)

Remote Visual Testing (RVI)

Radiographic Testing (RT) / Radiography Profile (RP) Corrosion

Magnetic particle Testing (MT)

Portable Hardness Testing (HT

Penetrant Testing (PT)

Phased Array Ultrasonic Testing (PAUT) / Corrosion mapping

Time of Flight Diffraction (TOFD)

Long Range Ultrasonic Testing / Guided Waves Testing (LRUT/GWT)

Magnetic Flux Leakage (MFL)

Tube inspection (Eddy Current ET - Remote Field RFT - Near field NFT)

Positive Material Identification (PMI)

Ferrite Test

Leak Test (Vacuum Box Testing)

Infrared Thermography Testing (TT)

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