PG&E Ends Alert at Diablo Canyon Power Plant

July 28, 2017


SAN LUIS OBISPO, Calif. – Pacific Gas and Electric Company (PG&E) has exited from the Alert that was declared earlier today at Diablo Canyon Power Plant (DCPP) following the restoration of air quality inside the facility’s Unit 2 containment structure.


There was never any risk to employee or public health and safety. Both Units 1 and 2 are in a safe condition and are operating at full power.


Oxygen content in Unit 2 containment was slightly lower than requirements for containment entry. This triggered an Alert classification. The classification for an event like this has been procedurally downgraded at other nuclear facilities since it is not a risk to the health and safety of the general public. PG&E is in the process of obtaining approval from the Nuclear Regulatory Commission to remove this type of event from being classified as an Alert.


The condition has been properly addressed and the Alert was terminated.


About Diablo Canyon Power Plant

Diablo Canyon Power Plant is a nuclear power facility owned and operated by PG&E. Its two units together produce approximately 2,300 net megawatts of carbon-free power.