LONDON, Aug 15 (Reuters) - Gasoline refining margins innorthwest Europe fell sharply to below $7 a barrel on Monday ascrude prices jumped, while steady exports to the U.S. and westAfrica capped losses.
* Oil rallied to a five-week high as speculation intensifiedover potential producer action to support prices amid a crudeglut.
* Overseas demand, particularly from West Africa, in recentdays has helped give cracks in Europe a floor.
* Philadelphia Energy Solutions was planning torestart the 85,000 barrel-per-day fluid catalytic cracking unitin the Girard Point section of its Philadelphia refinery complexby Monday, according to a source familiar with the plant'soperations.
* Western naphtha arrivals into Asia for Sept. are expectedto hit 900,000 - 1 million tonnes, well below the 12-monthrunning average of about 1.45 million tonnes, based onassessments by Thomson Reuters Supply Chain & CommoditiesResearch.
* Japan's naphtha imports for the petrochemical sector fell8 percent in July from the same month a year earlier, governmentfigures showed on Monday.
GASOLINE
* There were no Eurobob trades during the afternoon tradingwindow.
* Some 10,000 tonnes traded in the morning at $445-$452 atonne fob Amsterdam-Rotterdam, compared with trades at $441-$447a tonne on Friday. Gunvor and Total sold to Shell, Varo and BP.
* Litasco sold a barge of premium unleaded gasoline to Totalat $477.50 a tonne fob ARA, compared with $472-$474 a tonne.
* Gasoline barge refining margins fell to $6.90 a barrelfrom $8.51 a barrel.
* The September swap stood at around $462 a tonne at theclose, up from $451 a tonne.
* Brent crude oil futures were up $1.16 at $48.13 abarrel by 1538 GMT.
* U.S. August RBOB gasoline futures were up 1.7 percent at 1.3942 a gallon.
* The U.S. gasoline crack
NAPHTHA
* No cargoes traded. (Reporting by Ahmad Ghaddar)