VIENNA, April 11 (Reuters) - Austrian oil and gas group OMV will pay 110 million euros ($116.7 million) for a planned turnaround at the petrochemical units of its Schwechat refinery which will start in the middle of this month, it said on Tuesday.

"The facilities will shut down as planned. There will be a comprehensive, routine safety inspection carried out," OMV said of its refinery next to Vienna Airport. "This... is held once every six years."

The turnaround and investment will also be used to help the integration of OMV's operations and those of plastic maker Borealis at Schwechat, said OMV, which owns 36 percent of Borealis. ($1 = 0.9427 euros) (Reporting By Shadia Nasralla; editing by Francois Murphy)

Copyright 2017 Thomson Reuters. Click for Restrictions.