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1 Introduction and Context
Pages 5-10

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From page 5...
... , the White House, provided opening remarks on the possible motivation for adopting SI units for radiation measurements in the United States. They provided different perspectives, but both speakers endorsed actions that support scientific and technological advances and improve the nation's ability to respond to large-scale disasters.
From page 6...
... U.S. POLICIES FOR ADOPTING SI UNITS FOR ALL MEASUREMENTS The United States has been taking steps toward adopting SI units for all measurements for many years.
From page 7...
... in 1992 in response to the 1991 Executive Order. The NRC policy "supports and encourages the use ­ of the metric system of measurement by licensed nuclear industry."4 The NRC publishes new regulations, regulatory guides, and other documents in both SI and conventional units to facilitate use of SI units for radiation measurements.
From page 8...
... and NIST) and one international organization TABLE 1.1  Endorsement of Use of SI Units by National and International Organizations Reference or Institution Year of Endorsement National National Institute of Standards and Technology Taylor and Thompson, 2008; Thompson and Taylor, 2008 National Council on Radiation Protection and Measurements NCRP, 1985 Health Physics Society Roessler, 1984; Health Physics Society, 2012 Conference of Radiation Control Program Directors, Inc.
From page 9...
... NCRP recommended in 1985 that the United States gradually adopt SI units for radiation measurements, but the recommendation has not been implemented. The NCRP recommended the simultaneous use of SI and conventional units (referred to as present units in that report)
From page 10...
... However, the United States continues to use conventional units for radiation measurements. As a result, most radiation professionals in the United States must understand both conventional and SI units for radiation measurements and make conversions between the two.


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