ANSI N15.8-2009 pdf download Material Control Systems – Special Nuclear Material Control and Accounting Systems for Nuclear Power Plants
3.13 physical inventory. Determination on a measured basis of the quantity of SNM on hand at a given time; a complete check of all material on hand. The methods of physical inventory and associated measurements will vary depending on the material to be inventoried and the process involved. The typical physical inventory at a power reactor plant consists of an item count (piece count) of SNM in each ICA.
3.14 sealed container. Container storing SNM that has been sealed with a tamper-safing device or other mechanical means, e.g., welding.
3.15 special nuclear material (SNM). Plutonium, uranium-233, uranium enriched in the isotope 233 U or in the isotope 235 U, and any other material which the Nuclear Regulatory Commission (NRC), pursuant to the provisions of Section 51 of the Atomic Energy Act of 1 954, as amended, determines to be SNM.
3.16 tamper-safing. The use of a device on a container in a manner and at a time that ensures a clear indication of any violation of the integrity of the contents of the container.
4 Organizational Requirements
4.1 Delegation of Responsibilities and Authority Material control functional and organizational relationships shall be set forth in writing in organizational directives, instructions, procedures, manuals, or other documents. Documentation should include position qualification requirements and definitions of authority, responsibilities, and duties. The assignment of SNM control and accounting functions should be such that the activities of one person or unit serve as a control over and a check of the activities of other persons or units. Activities involving handling, accounting, or control of SNM should be verified by a second person. Specific assignments of responsibilities should be prescribed for all facets of the SNM control system. Delegation of material control responsibilities and authority should be in writing. Material control functions should be assigned in accordance with 4.1 .1 through 4.1 .3. Titles assigned to the positions are intended to be descriptive only. Organizations, specific titles, and related functions may vary.
4.1.1 Plant Manager The plant manager at each nuclear power plant should have overall physical control and physical inventory responsibilities for SNM at the plant site.