Formosa's refinery throughput down to 68% from 80%
RDS previously hit by fire twice in last 10 years
Impact on gasoline mitigated by ample supplies for now
Adds background, petchem run rates
SINGAPORE, July 20 (Reuters) - Taiwan's Formosa Petrochemical Corp 6505.TW has slashed runs at its 540,000 barrels-per-day (bpd) Mailiao oil refinery to about 68%, down from 80%, following last week's shutdown of a secondary unit due to a fire, its spokesman said on Monday.
It was unclear when the affected 80,000-bpd residue desulphuriser (RDS) will be able to resume operations as investigations are ongoing, said spokesman K.Y. Lin.
"Shipments of gasoline and diesel in August, however, would be affected as a result," he added, without elaborating on the total volumes affected.
Even before the fire, Formosa had previously said that its gasoline exports this year would be about half of its 2019 volumes as the pandemic has hit demand from overseas markets.
Any impact from a reduction in Formosa's gasoline shipments would be mitigated by ample supplies in the region, said a trader who tracks petrol.
Asia's gasoline premium to Brent crude was at a three-session low on Friday at $1.37 a barrel.
The Formosa refinery, which operates one of Asia's 10 argest standalone refineries by capacity, has two RDS units of the same capacity.
A Formosa RDS unit has been hit by fire twice in the past decade, in 2010 and again in 2014, based on Reuters data.
Formosa, Asia's top naphtha importer, also operates three naphtha crackers in Mailiao.
Two of the units with a total capacity of 1.73 million tonnes per year (tpy) are operating at full capacity and the largest unit at 1.2 million tpy is running at about 90% of its capacity, said Lin.
The 1.2 million tpy cracker is scheduled to undergo maintenance in August. O/ACRACKER
(Reporting by Seng Li Peng and Shu Zhang; Editing by Richard Pullin)
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