U.S. Nuclear Regulatory Commission, Division of Contracts, Attn: Linda Wise MS-T-7I2, Washington, D.C. 20555

70 -- THE CONTRACTOR SHALL PROVIDE A REAL TIME PLANT RISK SOFTWARE PACKAGE FOR USE BY THE NRC IN TRAINING AND REGULATORY ACTIVITIES. THE CONTRACTOR SHALL ALSO PROVIDE IN-HOUSE TRAINING ON THE USE AND MODIFICATION OF THE SOFTWARE!! SOL RS-AED-97-269 DUE 111297 POC Contact: Contract Specialist, Edna Knox-Davin, 301-415-6577 Amendment No. One (1) to Submission No. 137916 of the October 28, 1997, CBD issuance -- The purpose of this amendment is to provide answers to questions/concerns raised by prospective Offerors. The questions/concerns received and the responses being provided by this amendment are considered clarifications that in no way effect the solicitation as stated under Submission No. 137916. Accordingly, under this Amendment No. 1 to Solicitation No. RS-AED-97-269, the following clarifications are hereby made: Question 1. -- "The solicitation is for the procurement of "Real Time" risk software but includes other than real time applications such as event tree and fault tree construction. Maybe one of the problem(s) is with the definition of "Real Time." Response 1. -- The need for plant models is related to the time required to construct PRA models from scratch. The NRC's Technical Training Division (TTD) in the Office of Analysis and Evaluation of Operational Data has five (5) simulators. We would install the Risk Monitor software on each of these five simulators, initially running models provided by the vendor as typical models. As time permits, the appropriate changes would be made to the model to reflect the actual systems modeled by the simulators. Hence, there is the need for event/fault tree construction capabilities. By "Real Time", the software should be able to process changes in the availability of equipment within five (5) minutes of entering the appropriate data. It is the NRC's understanding that all commercial software can satisfy this capability. Question 2. -- The solicitation implies that the software will be used to check licensee calculations, particulary in the maintenance rule area. It also requests PRA models for typical plants. To be of use, the models must be the current models in use at the plants. These should be obtained by NRC directly from the licensee. Response 2. -- NRC has no legal authority to request PRA models from licensees. All other terms and conditions of this solicitation remain unchanged.**** (0311)

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