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VARSKIN Overview

The VARSKIN website that was operated by Oregon State University for the United States Nuclear Regulatory Commission is being phased out. Individuals that want access to the code and support are required to obtain a RAMP membership. Prior users that were or have been registered under the old website will need to obtain a RAMP membership. In October 2017 we will also be hosting our first VARSKIN Technical Exchange. The purpose of this meeting is for VARSKIN users to present or discuss how they use the code, potential improvements, as well as other general discussions. More information regarding the meeting will be available on the website in the Spring of 2017.

VARSKIN 5 is used to calculate occupational dose to the skin resulting from exposure to radiation emitted from hot particles or other contamination on or near the skin. These assessments are required by 10 CFR 20.1201(c) in which the assigned shallow dose equivalent is to the part of the body receiving the highest exposure over a contiguous 10 cm2 of skin at a tissue depth of 0.007centimeters (7 mg/cm2).

VARSKIN 5 allows for five different predefined source configuration simulations of point, disk, cylinder, sphere, and slab sources. This current version can also account for air gap and cover materials for photon dosimetry. The new VARSKIN 5 version has been updated to better predict beta dosimetry in shallow skin targets. Although the user can choose any dose-averaging area, the default area for skin dose calculations in VARSKIN 5 is 10 square centimeters, to conform to regulatory requirements pursuant to Title 10 of the Code of Federal Regulations, Section 20.1201(c).
Cover Model
Input for multiple covers
Output screen