INES-event
INES 1

VIOLATION OF CHEMICAL REGIME OF STEAM GENERATOR FEED WATER (SGFW)

Unit 3 at rated power. During the regeneration of filter in condensate circuit of turbine 1 the feed water conductivity limits, Na concentration and pH value were exceeded. During searching for a source of leakage Techspecs limits for SGFW were disturbed for a short period (4.45 hrs). Possible reason - incorrect procedure during the filter regeneration; regeneration acid solution penetrated into the flush piping through untight valves - violation of technology discipline.

Location: BOHUNICE-3
Event date: Mon, 18-10-1993
Nuclear event report
Legenda & explanation