The Nuclear Regulatory Commission will hold a daylong public meeting Wednesday in San Luis Obispo to discuss planned updates to Diablo Canyon nuclear power plant’s reactor safety systems.

Plant owner PG&E has requested an amendment to its operating licenses to upgrade several outdated reactor safety components.

“The current systems are digital, but they are obsolete and hard to get parts for,” said Lara Uselding, NRC spokeswoman.

The meeting will last from 10:30 a.m. to 4 p.m. at the Embassy Suites Hotel, 333 Madonna Road, San Luis Obispo. It will be a technical discussion among about a dozen plant managers and three representatives of the NRC’s reactor regulation office.

The public is welcome to observe the meeting. However, a portion dealing with security matters will be closed to the public.

About 3 p.m., the public will have an opportunity to ask questions of and make comments to the NRC officials.

Those unable to attend the meeting may listen in via telephone by dialing 888-324-9615 and using the pass code 25740.