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Sulfur Analysis of Marine Fuel Oil Using Handheld XRF

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Handheld XRF is a rapid and accurate method to determine sulfur (S) concentrations in fuel oil. This information is vital to help ensure fuel oil complies with International Maritime Organization regulations. In addition, handheld XRF can aid preventative maintenance programs by identifying and quantifying wear metals in oil.

Due to the environmental risks posed by emissions from shipping vessels, the International Maritime Organization (IMO) has set regulations that limit the sulfur content in fuel. As of 2020, the latest regulatory update lowers the global cap on sulfur in fuel from 3.5% to 0.5%, while sulfur in fuel from sulfur emission control areas (SECAs) remains at 0.1%. The regulation covers oil used in both main and auxiliary engines and boilers.

This regulation change leaves ship owners with little room for error and requires refineries to be more stringent in regard to fuel production and blending.

Olympus handheld XRF instruments rapidly analyze sulfur in oil while meeting international standards like ASTM D4294 and ISO 8754. Obtain on-site results at multiple locations from the refinery to the ships.

Onboard vessels: It is common to have multiple bunkers containing oil of different specifications, such as ultra-low sulfur fuel oil (ULSFO)1, very-low sulfur fuel oil (VLSFO)2, and high-sulfur heavy fuel oil (HSHFO)3. Since pipes from the bunkers to the engines or boilers may be shared at certain junctures, the oil can become contaminated before reaching the engine or boiler. Handheld XRF provides vessel personnel and surveyors with the flexibility to analyze oil from multiple locations between the bunker and the engine or boiler.

Regulators and laboratories: Handheld XRF provides regulators and laboratory staff with a fast, cost-effective way to screen oil samples onboard the vessel before selecting ones for further lab analysis.

Suppliers to vessels: The supply chain from the refinery to the bunker can be long, complex, and vary dramatically. As a result, the final product is often a blend of oil from multiple sources. Performing regular checks at the port or after blending helps ensure that incoming oil is compliant with the IMO regulations.

Analyzing wear metals in oil for preventative maintenance: Early identification and quantification of wear metals in oil is critical in preventative maintenance programs. Regularly analyzing oil samples with brief tests can help you avoid expensive damage and downtime to critical mechanical components. Table 1 below shows a list of common wear metal elements and their typical sources on a vessel.

Olympus handheld XRF instruments enable you to routinely analyze wear metals in oil with a wide concentration range from ppm to the percent level. Our XRF technology can also be automated for in-line (or online) oil analysis.

Further reading | https://www.onestopndt.com/ndt-articles/rebound-hammer-test-an-overview

Benefits of Vanta™ XRF Analyzers

The Olympus Vanta XRF instrument enables operators to analyze a range of coated materials in the warehouse or yard quickly and nondestructively. Features include:

Continuously operates at high temperatures up to 50 °C (122 °F)

Accurate results from parts per million (ppm) to the percent level of sulfur

Rugged (IP55/54 rated and MIL-STD-810G drop tested)

Cloud capable for efficient fleet management from different vessels

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[techndt]

Total Focusing Method (TFM) represents an Advanced Ultrasonic Testing (UT) Technique that revolutionizes flaw detection in materials. Read More!

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This webinar is the second half of a two-part series on the welding and repair of high-temperature plants. It will be of interest to anyone working in the power generation or process plant industries, either in manufacturing or those responsible for the maintenance and repair of pressure equipment. 

Know more about the webinar here: https://www.onestopndt.com/upcoming-webinars/welding-processes-technical-group-meeting-welding-and-repair-of-high-temperature-plant-part-2

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https://www.onestopndt.com/notes/sulfur-analysis-of-marine-fuel-oil-using-handheld-xrf-1

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https://www.onestopndt.com/events/nde-40-predictive-maintenance-communication-and-energy-systems-the-digital-transformation-of-nde

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https://www.onestopndt.com/ndt-companies/advanced-quality-centre

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NDT App Note | Detecting Cracks & Corrosion In Aircraft Longerons

Characterizing Fatigue & Stress cracks In The Vicinity Of Longeron Fasteners & Mapping Corrosion In a Multilayered Aluminium Structure. Read More

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Highway To The No-Danger Zone With Robotic NDT For Aerospace Sector

The Desire To Speed Up The Inspection Of Composite Parts Is Shared By Most Manufacturers. Read More At OnestopNDT

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Ultrasonic testing of Weld Joints

Ultrasonic Testing involves utilization of ultrasonic sound waves to detect defects inside a material.

The welded joints have possibilities of defects inside the welds , or sometime near the weld zone.

The few of defects that are often found in welds are Porosity, Cracks, Slag Inclusion, Lack of fusion, Lack of Penetration, Root concavity, Crater pipes, sharp undercuts, Burn through, HAZ cracks and much more.

These defects when located deep and cannot be viewed manually, Ultrasonic scanning is utilized to detect these discontinuities. The conventional ultrasonic testing of weld joints method which is shown here is totally operator reliable. Therefore international bodies require the operator to be qualified as per a standard and the machine used also meets standards requirement.

Where to learn NDT?

The certification may be ASNT Level 1, Level II or Level III or PCN or ISO 9712 qualification. There are many best NDT training institute for NDT certifications, one among them is AQC – Advanced Quality Centre.

How to scan a weld Joint ?

Initially Select the appropriate probe for scanning of welded plate or pipe.

Select high frequency available ( example 4 Mhz or 6 Mhz) for high sensitivity inspection.

Blog Credit @ One Stop NDT