Bisco Integrated Services Co. Ltd.

BISCO offers Magnetic particle inspection of surface & subsurface discontinuities utilizing permanent or electromagnetic yokes for inspection of materials & welds of pipes, pressure vessels & other process equipment on construction projects & process plants.

BENEFITS:

• Can detect both surface and near-surface indications.
• Surface preparation is not as critical compared to other NDE methods. Most surface contaminants will not hinder the detection of a discontinuity.
• A relatively fast method of examination.
• Indications are visible directly on the surface.
• Low-cost compared to many other NDE methods.
• A portable NDE method, especially when used with battery-powered yoke equipment.
• Post-cleaning is generally not necessary.
• A relatively safe technique; materials generally not combustible or hazardous.
• Indications can show the relative size and shape of the discontinuity.
• Easy to use and requires a minimal amount of training.

LIMITATIONS:

• It has limited application to only ferromagnetic materials.
• Further it is limited to disclosing only those discontinues that are at or near the surface.

BISCO offers Liquid Penetrant testing of surface discontinuities to inspect materials & welds of pipes, pressure vessels & other process equipment on construction projects & process plants.

BENEFITS:

• High sensitivity to small surface discontinuities
• Easy inspection of parts with complex shapes
• Quick and inexpensive inspection of large areas and large volumes of parts/materials
• Few material limitations (metallic and nonmetallic, magnetic and nonmagnetic, and conductive and nonconductive can all be inspected)
• A visual representation of the flaw is indicated directly on the part surface
• Aerosol spray cans make the process portable, convenient, and inexpensive
• Indications can reveal the relative size, shape, and depth of the flaw
• It is easy and requires a minimal amount of training

LIMITATIONS:

• Only surface-breaking defects can be detected.
• Only materials with a relatively nonporous surface can be inspected.
• Precleaning is critical since contaminants can mask defects.
• Metal smearing from machining, grinding, and grit or vapor blasting must be removed before LPI.
• The inspector must have direct access to the surface being inspected.
• Surface finish and roughness can affect inspection sensitivity.
• Multiple process operations must be performed and controlled.
• Post-cleaning of acceptable parts or materials is required.
• Chemical handling and proper disposal are required.

BISCO Provides Ultrasonic Shear wave inspection to inspect the welds of piping, pressure vessels & other process equipment on construction projects & process plants. BISCO also offers Ultrasonic Longitudinal wave inspection to perform thickness measurements & corrosion scanning & mapping on the plant piping & pressure vessels as per API 510 & API 570.

BENEFITS:

• High penetration power, allowing for flaw detection deep within a part
• High sensitivity, allowing for the detection of very small flaws
• Can be used to test when only one side of an object is accessible
• Greater accuracy, when compared to other non-destructive testing methods, for determining the depth of internal flaws and the thickness of parts with parallel surfaces
• Able to estimate the size, shape, orientation, and nature of defects
• Able to estimate alloy structures of components with differing acoustic properties
• Non-hazardous to nearby personnel, equipment or materials
• Highly automated and portable operations possible
• Immediate results can be obtained, allowing for immediate decisions to be made

BISCO uses various radiation sources to inspect welds of pipes, pressure vessels & other process equipment of construction projects & process plants.

BENEFITS:

• Can inspect assembled components
• Minimum surface preparation required
• Detects both surface and subsurface defects
• Provides a permanent record of the inspection
• Verify internal flaws in complex structures
• Isolate and inspect internal components
• Automatically detect and measure internal flaws
• Measure dimensions and angles within the sample without sectioning
• Sensitive to changes in thickness, corrosion, flaws, and material density changes

Phased Array Ultrasonic Testing (PAUT) is an advanced nondestructive examination technique that utilizes a set of ultrasonic testing (UT) probes made up of numerous small elements, each of which is pulsed individually with computer-calculated timing. More complex geometries that are difficult. PAUT can be used for more complex geometric weld inspections, highly thick materials, and crack detection.

Across industries and operations, PAUT offers many advantages compared to conventional UT or other NDT methods. Its ease of use, high precision, and speedy inspection have made it a popular choice for flaw detection. Some of these advantages include fast and accurate inspection, simplified testing, and inspection reliability.

The importance of welding in structures across all sectors of industry can't be overstated. Determining the quality of welds is often vital to the longevity and profitability of structures. Time-of-Flight Diffraction (TOFD) is an advanced NDT inspection method that is widely used for weld testing.

Time of Flight Diffraction (TOFD) is a reliable and fastest method of nondestructive ultrasonic testing (UT) used to look for flaws in welds. TOFD uses the time of flight of an ultrasonic pulse to find the location of a reflector. It can also be used for weld overlays and the heat-affected zones of other components as well such as piping, pressure vessels, clad material, storage tanks, and structural steel.

BISCO uses Omniscan from Olympus, Canada to carry out this effective technique. Omni Scan UT allows inspections simultaneously combining TOFD with conventional pulse echo. Pulse echo complements TOFD and covers the dead zones.