(Adds company comment, details; paragraphs 4-6)
SINGAPORE, Sept 27 (Reuters) - South Korea's S-Oil
010950.KS has shut the No. 1 crude distillation unit (CDU) and
some refining units at its Onsan refinery for a scheduled
overhaul this week, sources familiar with the matter said on
Friday.
The shutdown of the 90,000-barrel per day (bpd) CDU is
expected to last until the second half of October, the three
sources added.
The refinery's 27,000-bpd diesel/kerosene hydrotreater is
also shut for maintenance, one of the sources said.
The company declined to comment on the matter when
contacted.
S-Oil - whose main shareholder is Saudi Aramco 2222.SE -
flagged the closure during the second half in an earnings
presentation earlier, but had not given further details.
The Onsan refinery houses three crude distillation units
with total processing capacity of 580,000 bpd and a 89,000-bpd
condensate fractionation unit, the company says on its website.
(Reporting by Trixie Yap in Singapore; Additional reporting by
Joyce Lee in Seoul; Editing by Clarence Fernandez)
((trixie.yap@thomsonreuters.com;))