05000336/LER-1979-007-03, Following Scheduled Surveillance on Control Room Chlorine Detection Sys,Both Sys Declared Inoperable When Detectors Failed Calibr Procedures. Caused by Inaccurate Calibr

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• 05000336/LER-1979-007-03, /03L-0 on 790228:both Control Room Chlorine Detection Sys Declared Inoperable.Caused by Improper Calibr of Detectors Due to Use of Inaccurate Calibr Gas.Sys Returned to Svc After Recalibr