291 feb 831 2c0 4b0 fdd 966 0ca e80 ac7 e0d 473 e6c cfa c56 e20 d3d bf0 cf4 d37 a97 f3d 05d 40a 1a2 805 629 b33 d05 5f8 075 251 8fd 69f bf0 25e a94 7f1 2e4 7a4 9e1 9ba bba fab f44 696 8dd a8b 717 eea 8b2 a89 571 36e 7bf 812 eaf 102 cad ae8 8db 76b d5c 096 60f c67 92e b76 d75 2ab 727 1fb 60b 279 a06 550 0c5 0c9 e6e 386 fba 9b2 d27 b86 569 014 651 458 2bf a5d cd1 bc8 a6f 638 d70 ffa 7b3 e87 333 785

Formerly poorly defined, the rem was redefined in 1962 to clarify the usage of the term relative biological effectiveness (RBE) in both radiobiology and radiation protection. A rem is equal to 0.01 sievert in the International System of Units (SI).

How many rem of radiation is fatal?

Although radiation affects different people in different ways, it is generally believed that humans exposed to about 500 rem of radiation all at once will likely die without medical treatment.

What is a rem in radiation?

Consequently, the rem is a unit of human biological dose resulting from exposure of the biological preparation to one or many types of ionizing radiation.

How is rem radiation calculated?

Thus, the dose equivalent (in rems) is equal to the absorbed dose (in rads) multiplied by the quality factor of the type of radiation [see Title 10, Section 20.1004, of the Code of Federal Regulations (10 CFR 20.1004), "Units of Radiation Dose"].

How many rem can radiation workers receive?

Dose Limits for Radiation Workers Although the limits vary, depending on the affected part of the body, the annual total effective dose equivalent (TEDE) for the whole body is 5,000 mrem (5 rem).

How many REM is 1000 mrem?

Radiation Unit Conversion Chart

How much radiation does a phone give off?

The Federal Communications Commission (FCC) — which regulates cell phones, among other things, in the United States — has set radiation standards for cell phones at 1.6 watts per kilogram averaged over 1 gram of tissue.

How many rem is 1000 mrem?

Medical procedures account for nearly all (96%) human exposure to man-made radiation. For example, a chest x-ray typically gives a dose of about 0.01 rem (10 millirem) and a full-body CT gives a dose of 1 rem (1,000 mrem), as shown in the table to the left.

How much radiation can a human take?

Adult: 5,000 Millirems. The current federal occupational limit of exposure per year for an adult (the limit for a worker using radiation) is "as low as reasonably achievable; however, not to exceed 5,000 millirems" above the 300+ millirems of natural sources of radiation and any medical radiation.

How many rem is 100 mrem?

Radiation Unit Conversion Chart