Turkey urges Iraq to stop militants bombing pipeline

* Baghdad should take measures to curb pipeline attacks * Six attacks in August alone (Adds details, quotes, background) ANKARA, Aug 21 (Reuters) - Iraq must take serious steps to stop militants attacking an oil export pipeline running to Turkey, a senior Turkish official said on Wednesday, after two bombs disrupted exports for at least the sixth this month. The pipeline, running from the Kirkuk oilfields to the Mediterranean port of Ceyhan in Turkey, is one of Iraq's largest crude oil export corridors. "There is a problem with getting Kirkuk oil to world markets. There needs to be serious action taken to alleviate the security issue, and these steps should be taken by the central Iraqi government," said the senior Turkish official. The Turkish official said oil flow expected to be resumed on Wednesday night. One bomb exploded at around 1000 GMT local time on Wednesday in Hadhar, a district 80 km (50 miles) south of Mosul. Another section of the line was also attacked along the Tigris river, between Kirkuk and the northern city of Baiji, the officials said. "Attacks against the export pipeline is getting more serious. This time they bombed the line in more than one place which make repairs work more complicated," one Iraqi oil official said. Another official said the bomb attack against a part of the pipeline between Kirkuk and Baiji had caused a spill of crude into the Tigris river and local authorities had warned of a possible contamination. "Our crew is at both sites of the attacks trying to fix the damage as soon as possible," an oil official with state-run North Oil Co. said. Iraq is planning to build a new pipeline stretching from Kirkuk oilfields to the Turkish border which will act as a back-up to the nearly 40-year-old existing link. The 900km line has been bombed by militants about 30 times since the start of the year according to Iraqi officials. Kirkuk's exports sank to around 180,000 barrels a day last month versus 193,000 bpd in June. (Reporting by Orhan Coskun in Turkey and Ahmed Rasheed in Baghdad,; additional reporting by Ziad al-Sanjary in Mosul, Mustafa Mahmoud in Kirkuk and Ghazwan Hassan in Tikrit.; editing by William Hardy)