Computer Error at Sellafield Nuclear Plant in UK

Event Year: 1991 Reliability: Likely But Unconfirmed
Country: United Kingdom
Industry Type: Power and Utilities

A computer error at the vitrification plant resulted in two shielding doors being left open while highly radioactive material was still inside one chamber. (#2)


Production at the facility was stopped and did not resume until cause of the accident was established.
No one was exposed to radiation during the incident. (#2)

Action Description: A patch was added. (#2)