MOSCOW, June 11 (Reuters) - The Caspian Pipeline

Consortium (CPC) reduced daily oil pumping in May by 6% from

April to 5.906 million metric tons (1.51 million barrels per

day), according to an industry source and Reuters calculations.

CPC, which carries more than 80% of all Kazakh oil exports,

connects the Tengiz field in western Kazakhstan and several

others with the CPC marine terminal in Russia's Yuzhnaya

Ozereyevka, near Novorossiisk.

The source said that Kazakh oil exports via CPC fell to

5.386 million tons in May from 5.523 million tons a month

earlier while Russian oil supplies via CPC were 0.52 million

tons in May, against 0.57 million tons in April.

The CPC consortium does not comment on its operations.

Daily oil pumping in May was reduced by maintenance at the

pipeline.

A pumping station on the CPC pipeline in Russia is back in

service after being damaged in February, operator CPC said late

last month.

In mid-February the Kropotkinskaya oil pumping station for

the CPC pipeline, located in the Krasnodar region, was damaged

by drones and taken out of operation.

CPC's shareholders are Russia, which owns 31%, Kazakhstan

(20.75%), Chevron ( CVX ) (15%) and other private companies.