PARIS, March 12 (Reuters) - Exxon Mobil ( XOM )

fulfilled from existing stock all its delivery contracts from

its refinery in Port Jerome-Gravenchon in northern France since

it was hit by a major fire on Monday, a spokesperson for the

company said.

The refinery's staff were working to assess the damage to

one of two distillation towers of the oil refinery to see if and

when it would be able to operate again after an emergency at the

refinery was called off early on Tuesday, the spokesperson said.

She could not specify how long the refinery would be able to

honour all delivery contracts from existing stocks with the

tower shut down.

The refinery, located in Normandy near the estuary of the

Seine river, has two distillery towers and a capacity of 240,000

barrels per day (bpd), making it amongst the biggest in France.

It supplies the Ile-de-France region around Paris.

One person out of the five who received medical treatment

was still in observation in a local hospital, the spokesperson

said.

(Reporting by Forrest Crellin and Inti Landauro; Editing by

Emelia Sithole-Matarise)