Sentences with phrase «radiation dose limit»

They abandoned a collective radiation dose limit when it was discovered that the Yucca site could not meet it, and, just last year, the EPA promulgated final standards for licensing Yucca Mountain that rely on dilution of nuclear waste as opposed to containment.

Not exact matches

«There are no official dose limits for aircrew in the United States,» the US Centers for Disease control writes in its aircrew safety guidelines on cosmic radiation.

Along the way, according to a 2013 study, you'd get dosed with the radiation equivalent of a whole - body CT scan every five to six days, increasing your lifetime cancer risk above the limits set by NASA.

In fact, it is the accumulation of radiation dose that is the limiting factor for the maximum length of manned space flights.

The radiation dose they calculated was 0.66 sieverts, researchers report in the May 31 Science; the agencies» limit for astronauts is 1 sievert.

Significantly, the effect of PARTICLE in limiting the time and extent of the radiation - induced increase in DNA methylation is more pronounced at lower radiation doses than at higher doses.

The British government's chief adviser on radiation is urging lower dose limits for workers and the public in the light of a recent review of the dangers posed by radiation.

The first independent studies of Japan's worst nuclear accident, which has already caused the death of two workers from multiple organ failure, also suggest that radiation doses outside the 350 - metre evacuation zone breached the safety limit.

Radiation - induced pulmonary fibrosis — tissue scarring that can permanently impair lung function — limits the delivery of therapeutic radiation doses to non-small cell lung cancer.

Stereotactic radiotherapy destroys tumors with precise, very intense doses of radiation while limiting damage to healthy tissue, offering accuracy that is similar to the sharpness of a surgeon's knife.

Other radiation treatments that require targeting the tumor from an external source, which exposes healthy tissues and limits how high a dose can be safely delivered.

To protect normal cells, veterinarians carefully limit the doses of radiation and spread the treatment out over time.

The Act arises from a letter from a group of health physicists who pointed out that the limited understanding of low - dose health risks impairs the nation's decision - making capabilities, whether in responding to radiological events involving large populations such as the 2011 Fukushima accident or in areas such as the rapid increase in radiation - based medical procedures, the cleanup of radioactive contamination from legacy sites and the expansion of civilian nuclear energy.