Re-evaluation of Regulatory Guidance Provided in Regulatory Guides 1.142 and 1.143 (NUREG/CR-5733)

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Publication Information

Manuscript Completed: July 1999
Date Published:
August 1999

Prepared by:
T. M. Adams, J. D. Stevenson, G. G. Thomas, and G. A. Harstead

Stevenson and Associates
9217 Midwest Avenue
Cleveland, OH 44125

H. L. Graves III, NRC Project Manager

Prepared for:
Division of Engineering Technology
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

NRC Job Code W6540

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This report describes the technical basis and recommends changes in the Nuclear Regulatory Commission's (NRC's) criteria now used in the design of Nuclear Concrete Structures other than Containment and the design of Radioactive Waste Management Systems, Structures and Components. The authors judged that the best method by which the conclusions of this report can be implemented are through the issuance of revisions to existing Regulatory Guides. There have been several developments since the issuance of the last revision of Regulatory Guides 1.142 and 1.143 (1981 and 1979 respectively) which provides guidance for the design of these items. ACI 349, which presents the code requirements for nuclear safety related concrete structures, has had two major revisions since the last issue of the Regulatory Guides. New advanced reactor design concepts have been put forward that include unique design attributes that need to be considered. The Department of Energy (DOE) has been active in writing standards for the design of radioactive waste management systems. There have also been numerous changes to the Code of Federal Regulations since the issuance of Regulatory Guides 1.142 and 1.143. This report discusses these advancements and changes with respect to the scope of the Regulatory Guides and includes detailed recommended changes to Revision I of Regulatory Guide 1.142 and 1.143.

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