Singapore: CTI-Maritec shares testing protocols ahead of mandatory enhanced bunker fuel checks
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With mandatory enhanced checks for marine fuel delivered at Singapore port coming into effect on 1 June, bunker fuel testing and marine surveying business Maritec Pte Ltd (CTI-Maritec) has published a newsletter providing recommendations on vital pre-emptive fuel testing measures vessels should be taking as part of their routine fuel testing and also recommendations on optimal testing options available when deep-dive analysis is required to determine a root cause:
Introduction
On 8 February 2024 the Maritime and Port Authority of Singapore (MPA) issued a Port Marine Circular No 3 of 2024 regarding the implementation of enhanced testing parameters for marine fuel batches intended to be delivered as bunkers in the Port of Singapore in addition to the existing quality assurance measures.
In accordance with the MPA’s Port Marine Circular No 3 of 2024, from 1 June 2024 onwards, bunker suppliers in the Port of Singapore must ensure that:
- Residual & Bio-residual bunker fuel do not contain Chlorinated Organic Compounds (COC) above 50mg/kg and are free from inorganic acids.
- COC must be tested using the EN 14077 accredited test method and shall be reported in the “Certificate of Quality” (COQ) provided to receiving vessels.
- Inorganic acids must use the ASTM D664 accredited test method as prescribed in ISO 8217 and the Strong Acid Number (SAN) (in addition to the Total Acid Number (TAN) shall be reported in the COQ (i.e. SAN = 0) provided to receiving vessels. For distillate / bio-distillate bunker marine fuel batches, SAN must be tested as per ASTM D664 test method and reported in the COQ.
- Residual marine fuels are free from polystyrene, polypropylene & polymethacrylate. These can be tested by filtration, microscopic examination, & Fourier-Transform Infrared spectroscopy analysis.
Testing Recommendations in line with MPA Enhanced Parameters to Protect Your Vessels:
In view of the above, CTI-Maritec recommends fuel testing protocols as depicted in the chart below (as routine pre-emptive measures and/or for deep dive requirements to detect the root cause) to help safeguard vessel health.
Our recommendations are primarily focused at COCs and SAN detection for bunker supply in Singapore, while recommendations for testing Polymers are advised for requirements of reported problem cases or when highly abnormal GCMS findings of chemical compounds like Styrene, DCPD and Indene are detected.

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Photo credit: Louis Reed from Unsplash
Published: 29 May 2024
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