Information Notice No. 81-08: Repetitive Failures of Limitorque Operator SMB-4 Motor-to-Shaft Key
… No.: 6835 Accession No.: 8011040272 IN 81-08 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND … normal surveillance testing of motor-operated valves at the Cooper Nuclear Station, it was discovered that the RHR "B" loop suppression …