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Singapore research firm warns low sulphur fuel not low enough
来源：Shipping News Headlines 编辑：编辑部 发布：2021/02/26 10:27:52
SINGAPORE's Maritec, an independent test and research facility, is advising shipowners on how best to meet IMO 2020 fuel testing requirements following reports of excessive sulphur in some very low sulphur fuel oils, the company announced.
Maritec reports several cases where tested VLSFO (very low Sulphur fuel oil) manifold samples have recorded a sulphur content of between 0.51 to 0.53 per cent, exceeding the mandatory allowable 0.50 per cent.
The testing company says this accounts for about 1.23 per cent of VLSFO tested to date.
According to Maritec, since the implementation of IMO 2020, there is "confusion and frustration" as to whether the ISO 4259 upper limit of 0.53 per cent still applies or not.
"Given that there will be variability between test results, even from identical samples tested in the same lab, it raises the question: when does an individual test result indicate that the tested VLSFO fuel is compliant?" said Maritec vice president John Ren Di.
"IMO has adopted a 95 per cent confidence testing boundary which is given by ISO 4259 as 0.59 times the reproducibility value R (expressed as 0.59R). However, this applies only to in-use and onboard samples and not the sample taken at the manifold," he said.
Maritec reports several cases where tested VLSFO (very low Sulphur fuel oil) manifold samples have recorded a sulphur content of between 0.51 to 0.53 per cent, exceeding the mandatory allowable 0.50 per cent.
The testing company says this accounts for about 1.23 per cent of VLSFO tested to date.
According to Maritec, since the implementation of IMO 2020, there is "confusion and frustration" as to whether the ISO 4259 upper limit of 0.53 per cent still applies or not.
"Given that there will be variability between test results, even from identical samples tested in the same lab, it raises the question: when does an individual test result indicate that the tested VLSFO fuel is compliant?" said Maritec vice president John Ren Di.
"IMO has adopted a 95 per cent confidence testing boundary which is given by ISO 4259 as 0.59 times the reproducibility value R (expressed as 0.59R). However, this applies only to in-use and onboard samples and not the sample taken at the manifold," he said.