U.S. Nuclear Regulatory Commission, Division of Contracts, Mail Stop: T-7-I-2, Washington, D.C. 20555

B -- ANALYTICAL SUPPORT FOR CONTAIN CODE ASSESSMENTS POC Mary H. Mace, Contracting Officer, 301/415-7314/Sharon D. Mearse, Contract Specialist, 301/415-6591 The NRC intends to negotiate a sole source contract with Jack Tills Associates (JTA) for the services of Mr. Jack Tills in performance of an effort entitled "Analytical Support for CONTAIN Code Assessments." Specifically, the contractor will be required to perform highly qualified CONTAIN calculations for selected LWR plant designs and/or for selected experimental tests (including International Standard Problems (ISPs); assess the adequacy of selected integral and separate effects experiments as related to the suitability in performing code assessments (to include determining the adequacy of instrumentation and the underlying scaling rationale; analyze and reduce data for code assessments; interact with the CONTAIN code developers as needed (e.g., make recommendations to improve code user guidance and documentation, eliminate errors in the code, etc.); provide technical assistance to NRC, i.e., perform limited studies and review relevant technical reports; and participate in meetings, conferences, and workshops. In order to perform this effort, it is imperative that the contractor has: 1) expertise in the field of containment thermal-hydraulics, 2) extensive experience with the CONTAIN code and its interaction with various LWR designs, including advanced LWR designs, 3) extensive knowledge and experience in analyzing containment related integral and separate effects experiments (including knowledge of instrumentation, data analysis and understanding the underlying scaling rationale) for code assessment, 4) experience with and the ability to perform high quality CONTAIN code calculations of containment facilities and/or related designs, 5) experience with and have participated in performing containment related International Standard Problems (ISPs), and 6) knowledge of NRC's licensing containment analysis methods. As the CONTAIN code has been associated within the regulatory framework of NRC, the use of the code domestically has been narrowly restricted to Sandia National Laboratories (SNL) and only two commercial firms. One firm's experience has only recently been acquired through a contract with NRC and is limited to only running the code in consultation with the second firm (JTA), but does not have the required knowledge base and experience needed in the field of containment thermal-hydraulics and expert ability to use the CONTAIN code in a highly qualified manner. JTA has been involved with this work since 1983 as a subcontractor to SNL and is a recognized expert in the field of containment thermal-hydraulics. JTA, with the use of Mr. Tills, is the only commercial contractor in the United States which exhibits the required skills and experience in running the CONTAIN code, is knowledgeable in NRC licensing containment analysis methods, and has extensive knowledge in experimental testing which includes determining the suitability of instrumentation. The period of performance is three years with two one-year options. This is a notice of intent to contract only. A solicitation document does not exist. Interested parties should submit written technical documentation, to the NRC, demonstrating their ability to furnish the services specified to the U.S. Nuclear Regulatory Commission, Division of Contracts, Attn: Sharon D. Mearse, Mail Stop: T-7-I-2, Washington, DC 20555. Telephonic and/or telegraphic responses and responses providing insufficient information for evaluation will not be considered. See Note(s): 22. (0348)

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