Nuclear Regulatory Commission, Office of Administration, Division of Contracts and Property Management, 11545 Rockville Pike, Rockville, MD, 20852-2738

A -- TECHNICAL SUPPORT FOR SEISMIC BEHAVIOR OF DRY CASK STORAGE SOL RES-60080020 DUE 081400 POC Sharlene McCubbin, Contract Specialist, Phone (301) 415-6565, Fax (301) 415-8157, Email smm3@nrc.gov WEB: Visit this URL for the latest information about this, http://www2.eps.gov/cgi-bin/WebObjects/EPS?ACode=P&ProjID=RES-60080020&LocID=2206. E-MAIL: Sharlene McCubbin, smm3@nrc.gov. The NRC intends to issue a fixed rate purchase order for the services described in the Statement of Work as follows: STATEMENT OF WORK: TITLE "Technical Support For Seismic Behavior of Dry Cask Storage Systems" BACKGROUND -- The Office of Nuclear Material Safety and Safeguards (NMSS) of the NRC identified a need in March 1998 to investigate a range of technical issues concerning the dry storage and transportation of spent nuclear fuel. One of the issues is to conduct confirmatory research for establishing criteria and review guidelines for the seismic behavior of Dry Cask Storage Systems (DCSS). The results of this research are expected to aid the NMSS staff in performing the safety review of licensing applications of DCSS's. The Office of Nuclear Regulatory Research (RES) has contracted the Sandia National Laboratories (SNL) to perform analyses that will provide the technical basis for NRC staff licensing positions and decisions (Job Code W6829). A Review Panel will comment on the technical approach and modeling assumptions used by SNL. However, independent confirmatory (simplified) analysis done by an expert is also needed. OBJECTIVE -- The objective of this work is to provide technical support and to perform confirmatory analyses to determine the seismic behavior of dry cask storage systems. TECHNICAL AND OTHER QUALIFICATIONS REQUIRED -- For successful performance of the work, the Principal Investigator should be an individual with qualifications and experience in nonlinear finite-element seismic analyses with sliding/tipping of a composite model of dry casks/pad/soil, and should be familiar with NRC regulations and acceptance criteria for sliding/tipping of the dry cask systems during a seismic condition. This individual should also have demonstrated ability to perform seismic response analyses in support of experiments, and the ability to develop 2D models that represent 3D models for confirmatory analyses. SCOPE OF WORK -- While SNL is developing the three-dimensional (3D) couplednonlinear finite element models that address dynamic coupling of a cask, a flexible concrete pad, and an underlying soil rock foundation, in particular, the soil-foundation-structure-interaction, the following two tasks need to be performed: 1) Provide confirmatory review and consulting to SNL's effort on finite element model development. This effort should include the study of cask stability for the evaluation of seismic behavior such as tipping, sliding, rotating or impacting neighboring cask. Upper and lower bounds of parameters such as cask geometry, site seismicity, foundation properties, and cask/pad interface friction need to be judged to get the meaningful results from such analyses. This will help SNL to develop a comprehensive methodology for the seismic evaluation of the cask storage systems so that some evaluation tools, tables, or nomograms can eventually be developed. 2) The project being done by SNL for a #D finite element model needs to be verified by an independent confirmatory analysis, that requires development of a compatible two-dimensional (2D) model, using the same seismic time-histories, soil profile data, and coefficients of friction at cask/pad interface provided by SNL as part of the activities in item 1, above. The cask/pad interface must include steel to concrete and concrete to concrete interfaces with appropriate ranges of coefficients of friction. The practical ranges of thickness of concrete pads must be studied. The 30% rule, as used in industry practice, to account for the two-directional horizontal motion, needs to be applied when comparing the analysis results from the 2D model developed in this effort to those from the 3D model of SNL. Variation of parameters important to the seismic behavior must be critically examined in order to get meaningful output of this study. PERIOD OF PERFORMANCE -- This purchase order is for a duration of 6 months. MEETINGS AND TRAVEL -- No travel is anticipated. However, if it is found that travel is required to perform a specific assignment, it shall be coordinated with and approved in advance by the NRC Project Officer. NRC FURNISHED MATERIAL -- None required. DELIVERABLES AND SCHEDULE -- The contractor shall submit a draft topical report summarizing the methodology and conclusions six weeks prior to the completion date. NRC will review and provide comments within four weeks, so that the final report could be submitted by the completion date. Additionally, the contractor shall submit monthly progress reports by the middle of the following month. SELECTION CRITERIA -The contractors will be selected based on the contractors Personnel Qualifications/Experience and Past Performance- NOTE: Although NRC considers cost important, technical merit will be the major factor in NRC determining the award of this procurement. Therefore, the offeror shall provide the following: 1. The offeror shall provided a resume directed to the specific needs of the contract and not be general in nature. The offerors should describe particular expertise asit relates to the entire statement of work, especially, the section above entitled, TECHNICAL AND OTHER QUALIFICATIONS REQUIRED. The offeror shall describe experimental and/or analytical knowledge related to the areas stated in the statement of work. In addition the offeror shall provide a list of publications not to exceed two pages. The offeror shall indicate extent to which they will be available to perform this effort. 2. A list of all contracts performed within the last six years which required the offeror to perform comparable services as these services described in the attached Statement of Work. For each client the offeror shall provide a current contact name, telephone number and fax number. LEVEL OF EFFORT -- The estimated level of effort is approximately three person-months total. The estimated number of hours and other applicable costs are estimated below. The contractor shall be paid a fixed unit price per hour for services performed with additional reimbursement of travel expenses and incidental expenses directly related to performance of the work for this requirement. The quantities specified are estimates only and cannot be guaranteed by the NRC. Project Manager, 100 hours, Principal Investigator, 270 hours, and Support Staff, 60 hours. The following clauses in addition to the standard purchase order clauses will be made a part of the purchase order. Private Use of Contract Information and Data (NRC Clause), Proprietary Data and Confidential Information (NRC Clause), and Mandatory Information for Electronic Funds Transfer (FAR Clause 52.232-33) The offerors shall provide proposals and supporting documentation to the NRC by July August 14,2000. It can be faxed to(301) 415-5761 or mailed to the following address: U.S. Nuclear Regulatory Commission, ATTN: Sharlene McCubbin, Mail Stop T-7-I-2, 11545 Rockville Pike, Rockville, MD 20852-273. Point of Contact: Sharlene McCubbin, Contract Specialist (301)-415-6565. (301) 415-5761 or mailed to the following address: U.S. Nuclear Regulatory Commission, ATTN: Sharlene McCubbin, Mail Stop T-7-I-2, 11545 Rockville Pike, Rockville, MD 20852-273. Point of Contact: Sharlene McCubbin, Contract Specialist (301)-415-6565. Posted 07/27/00 (D-SN479489). (0209)

Loren Data Corp. http://www.ld.com (SYN# 0002 20000731\A-0002.SOL)

| A - Research and Development Index  |  Issue Index |