410 IAC 5-1-10.5 International system of units

Sec. 10.5. The Metric Conversion Act of 1975 (PL 94-168) urged the increasing awareness and use of the International System of Units (SI). Where appropriate, schedules and appendices are provided with notes concerning conversion factors. The inclusion of the SI equivalent is for informational purposes only. (a) Absorbed dose. The unit of absorbed dose is the gray (Gy), which is equal to 1 joule per kilogram. One rad is equal to 1 × 10-2 gray. Sub-multiples included in this document are the milligray (mGy) and the microgray (μGy). (b) Dose equivalent. The unit of dose equivalent is the sievert (Sv) which is equal to 1 joule per kilogram. One rem is equal to 1 × 10-2 sievert. Sub-multiples included in this document are the millisievert (mSv) and the microsievert (μSv). (c) Exposure. The unit of exposure is the coulomb per kilogram (C/kg). One roentgen is equal to 2.58 × 10-4 coulomb per kilogram. Submultiples of this unit are the millicoulomb per kilogram (mC/kg) and the microcoulomb per kilogram (μC/kg). (d) Radioactivity. The unit of measurement of radioactivity is the becquerel (Bq) and is equal to one transformation per second. One curie is equal to 3.7 × 1010 becquerels. Multiples included in this document are kilobecquerel (kBq), megabecquerel (MBq), gigabecquerel (GBq), and petabecquerel (PBq).