NEW YORK, May 23 (Reuters) - The Colonial Pipeline, the

largest refined fuel pipeline in the U.S., conducted system

maintenance on Thursday that required a temporary halt of some

deliveries, the company said in a statement.

Colonial does not expect significant impacts to fuel markets

from the temporary halt and expects to return to normal

operations by the end of day, a company spokesperson said. The

pipeline will send updated schedules to shippers if there are

substantive changes to delivery timelines, the spokesperson

added.

The maintenance was not related to fuel leakages or

cyberattacks, they said in response to a question about

unverified reports of 'IT issues' on its system.

The 5,500 mile (8851 km) long Colonial pipeline pumps 2.5

million barrels a day of refined products like gasoline, diesel

and jet fuel from refineries along the U.S. Gulf Coast to

markets spread across the U.S. East Coast on its way to the New

York Harbor.

A 2021 hack of Colonial's systems proved to be one of the

most disruptive digital ransom operations ever and led to a

surge in gasoline prices.

Traders and brokers do not expect an impact to fuel prices

from Thursday's maintenance related halt as the disruption is

expected to be brief, multiple market participants said.