Stichting Laka

Event Report Forms (ERFs) are filed to the IAEA. Sometimes there are multiple event reports, updating the rating, the event description. Here you only see the latest event report

ERF send date: Fri, 02-04-1993
ERF description: Zion Unit 2 was operating at 100% power when a blown fuse caused the loss of the ability to silence and reset about half the visual and audible main control board alarm annuniciators. The annunciators that were lost were those that alarm in the event of abnormal conditions or actuations of 1) safeguards components (e.g.containment spray, auxiliary feed, and service water), 2) reactor coolant components (e.g., rod control and reactor coolant pumps), and 3) safeguards buses normally supplied by the emergency diesel generators. Within 25 minutes, control room operators replaced the blown fuse and satisfactorily tested the annunciators. The plant remained operating at 100 percent power throughout the event.
ERF rating date: 31-03-1993
ERF contact person: DENWOOD ROSS
ERF address: WASHINGTON, D.C. 205, United States
ERF affiliation: USNRC, M/S MNBB-3701

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Power Reactor Research Reactor Radwaste Facility Enrichment Facility Radiation Source Irradiation/Accelerator Facility Transportation

Fuel Fabrication Fuel Reprocessing Research Facility Mining/Milling Radioisotope Processing/Handling Facility Other