Suggested Citation:"Appendix C: Conversions and Units." National Academies of Sciences, Engineering, and Medicine. 2016. Lessons Learned from the Fukushima Nuclear Accident for Improving Safety and Security of U.S. Nuclear Plants: Phase 2. Washington, DC: The National Academies Press. doi: 10.17226/21874.
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Appendix C
Conversions and Units
| Distance-Related Conversions | ||
| kilometers (km) and miles (mi) | 1 km = 0.62 mi | 1 mi = 1.6 km |
| km2 (square kilometers) and mi2 (square miles) | 1 km2 = 0.39 mi2 | 1 mi2 = 2.59 km2 |
| m (meters) and ft (feet) | 1 m = 3.28 ft | 1 ft = 0.30 m |
| m3 (cubic meters) and ft3 (cubic feet) | 1 m3 = 35.32 ft3 | 1 ft3 = 0.03 m3 |
| km/hr (kilometers per hour) and mph (miles per hour) | 1 km/hr = 0.62 mph | 1 mph = 1.6 km/hr |
| Radiation-Related Conversions | ||
| mSv (millisieverts), mrem (millirem), and mGya (milligray) | 1 mSv = 100 mrem = 1 mGy | 1 mrem = 0.01 mSv = 0.01 mGy |
| Bq (becquerels) and Ci (curies) | 1 Bq = 2.7 × 10−11 Ci | 1 Ci = 3.7 × 1010 Bq |
| Other | ||
| MJ (megajoules) and kWhr (kilowatt hours) | 1 MJ = 0.28 kWhr | 1 kWhr = 3.6 MJ |
| MPa (megapascals) and psi (pounds per square inch) | 1 MPa = 145 psi | 1 psi = 0.007 MPa |
| Celsius and Fahrenheit | °C = (5/9)* (°F − 32°) | °F = (9/5)* °C +32° |
| metric tons and pounds (lbs) | 1 metric ton = 2204.6 lbs | |
Suggested Citation:"Appendix C: Conversions and Units." National Academies of Sciences, Engineering, and Medicine. 2016. Lessons Learned from the Fukushima Nuclear Accident for Improving Safety and Security of U.S. Nuclear Plants: Phase 2. Washington, DC: The National Academies Press. doi: 10.17226/21874.
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| Prefixes | ||
| pico- | 10-12 | |
| micro- | 10-6 | |
| milli- | 10-3 | |
| kilo- | 103 | |
| mega- | 106 | |
| giga- | 109 | |
| tera- | 1012 | |
| peta- | 1015 | |
a Millisieverts and millirem are units of effective dose, whereas milligray is a unit of absorbed dose. They are numerically equivalent when exposure is from gamma rays and x-rays.
| Unit of Measure | Abbreviation | Type of Measure |
|---|---|---|
| Becquerel | Bq | radiation activity |
| Celsius | C | temperature |
| centimeters | cm | distance |
| Fahrenheit | F | temperature |
| feet | ft | distance |
| gallon | gal | volume |
| gallons per minute | gpm | flow rate |
| Gray | Gy | absorbed radiation dose |
| Joule | J | energy |
| kilogram | kg | mass |
| kilometers | km | distance |
| kilopascals | kPa | pressure |
| kilovolts | kV | electrical potential |
| kilowatt | kW | electrical power |
| kilowatt-hour | kWhr | energy |
| liters per minute | Lpm | flow rate |
| megapascals | MPa | pressure |
| megawatts electric | MWe | electrical power |
| meters | m | distance |
| millimeters | mm | distance |
| millirem | mrem | effective radiation dose |
| millisievert | mSv | effective radiation dose |
| newton | N | force |
| pound | lb | mass |
| pounds per square inch | psi | pressure |
| volts | V | electrical potential |
Suggested Citation:"Appendix C: Conversions and Units." National Academies of Sciences, Engineering, and Medicine. 2016. Lessons Learned from the Fukushima Nuclear Accident for Improving Safety and Security of U.S. Nuclear Plants: Phase 2. Washington, DC: The National Academies Press. doi: 10.17226/21874.
×
Suggested Citation:"Appendix C: Conversions and Units." National Academies of Sciences, Engineering, and Medicine. 2016. Lessons Learned from the Fukushima Nuclear Accident for Improving Safety and Security of U.S. Nuclear Plants: Phase 2. Washington, DC: The National Academies Press. doi: 10.17226/21874.
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