Diablo Canyon Nuclear Power Plant

Location:

Avila Beach, California
35.2117, -120.854

Owner: 

Pacific Gas & Electric Company

Population Within 10 Miles:

77,038

On-Site Dry Casks: 

Yes

NRC Contact Information: 

Reactors

Diablo Canyon Unit 1

Reactor Type: 

Pressurized Water Reactor

Operational Status:

Operating

Licensed to Operate:

11/2/1984 to 9/22/2021

Diablo Canyon Unit 2

Reactor Type: 

Pressurized Water Reactor

Operational Status:

Operating

Licensed to Operate:

8/26/1985 to 4/26/2025

Notes: 

11/01/2013: The NRC isn't enforcing seismic regulations at the Diablo Canyon Nuclear Power Plant, as evidenced in our recent report. Read the report >

10/22/2009: A misguided repair to valves that would not open fast enough prevented other key valves from opening. Tests after the valve repairs failed to detect the problem. The reactor operated for nearly 18 months with vital emergency systems disabled.

02/14/2005: UCS raised several human performance problems apparent from events involving operator mistakes in controlling the reactor power level at Unit 1 in a letter to NRC Region IV. Download the pdf >

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