[en] In the Commission policy statement on severe accidents in nuclear power plants the Commission concluded that existing plants pose no undue risk to the public health and safety and that there is no present basis for immediate action on any regulatory requirements for these plants. However, the Commission recognizes, based on NRC and industry experience with plant-specific probabilistic risk assessments (PRAs), that systematic examinations are beneficial in identifying plant-specific vulnerabilities to severe accidents which could be fixed with low-cost improvements. As a key part of the implementation of the policy statement, the staff issued Generic Letter 88-20 on Nov. 23, 1988, requesting that each licensee conduct an individual plant examination (IPE) for internally initiated events only. Current risk assessments indicate that the risk from external events could be a significant contributor to core damage in some instances. The staff, however, delayed the issuance of the request for a systematic IPEEE to allow the staff to carry out additional work to (1) identify which external hazards need to be evaluated, (2) identify acceptable examination methods and develop procedural guidance, (3) coordinate with other ongoing external event programs, and (4) conduct a workshop to explain the IPEEE process and to obtain comments and questions on the draft generic letter supplement and associated guidance document. The staff has completed this work and has revised this supplement and the guidance document and is now requesting that each licensee perform an individual plant examination of external events to identify vulnerabilities, if any, to severe accidents and report the results together with any licensee-determined improvements and corrective actions to the Commission. The five external events requested to be assessed include: seismic events, internal fires, high winds and tornadoes, external floods, and transportation and nearby facility accidents