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The Transportation Security Administration ( TSA ) is seem to monitor the floor of radiation that its employee are exposed to from X - ray engineering science , including aerodrome body scanners , a papers from the agency says .
In the written document , the TSA say it plans to start perform radiation measure using " personal dosimeter , " which are equipment worn on the body that measure a person’sexposure to radiation sickness , at sealed airports . Such devices are used by mass who ferment near source of radiation sickness such as infirmary and atomic power plant life employee .
" The measurements will aid the TSA in watch if the Transportation Security Officers ( TSO ) at selected federalized drome are bring out to ionizing radiation above minimum perceptible levels , and whether any measured radiation DoS approach or exceed the threshold where personnel dosimetry monitoring is need by [ Department of Homeland Security]/TSA policy , " accord to thedocument , which wasposted on a government site .
The role of the papers , forebode " request for information , " is to identify and collect info on vendors that could supply personal dosimeters to the TSA .
Personal dosimeter mensurate exactly how much radiation syndrome a person receives , so the levels can be compare with the limit countersink by the government .
Experts today expressed surprisal that such gadget , which are required by constabulary for anyone who works with radiation , were not already used by airdrome screener .
" I would n’t woolgather of them not experience that already , " say Dr. Nagy Elsayyad , a radiation oncologist at the University of Miami Miller School of Medicine . " They really should have some form of monitor machine , " Elsayyad said .
" By any possible definition , they are radiation worker , " said David Brenner , theater director of the Center for Radiological Research at Columbia University Medical Center in New York .
Airport covering and radiation
Some of theairport body scanners , known as backscatter scanners , emit X - shaft of light which bounce off the soundbox to create an ikon . There are about 250 such image scanner in utilization in the United States .
Michael McCarthy , a spokesman for TSA , said personal dosimeters are not presently used by TSA employees because the story of irradiation they are peril to " is well below the minimum threshold where personal dosimeters would be required . "
McCarthy said all studies done to date on airport digital scanner advise the amount of radiation they emit is well within internal base hit touchstone . The scanner are also tested at least once a year to mark off radiation emissions .
Even though the radiation doses are probable to be very low , Elsayyad say the dose should still be confirmed using dosimeter . Because dosimeters are fairly inexpensive ( equating a few dollar bill per month per person ) , the TSA has nothing to suffer , and a great deal to amplification , from providing its employees with dosimeters , Elsayyad enjoin .
By not already valuate the radiation drome screeners have , the TSA is indicate it considers its employees to have about the same exposure to radiation as the cosmopolitan public , " which I do n’t think is reliable , " Elsayyad said . While a passenger will likely go through the digital scanner just once in a day , " these guys are sit there all the time , " Elsayyad say .
The factual levels of irradiation exposure to airport security workers should be investigated , he articulate . Elsayyad said the programme to start using personal dosimeter should be commended .
grey orbit
The body scanners emit about 0.15 microsieverts of radiation per scan . This dose is equivalent to the radiation a person would be exposed to in two minute of flee in an airplane , the TSA pronounce .
The health effects of such small radiation doses are still uncertain . " We ’re sort of in this very big gray area , " said Dr. Jacqueline Williams , a radiation sickness expert at the University of Rochester in New York . Though Williams say in a premature interview the effects to an private passenger are probably negligible .
Even collecting information on how much radiation airport screener are exposed to still wo n’t tell apart us whether they may suffer health consequences , Williams said . However , she agreed that personal dosimeters for airport screeners should still be used , tally the TSA should cognize exactly what doses of radiation syndrome are ask .
Pass it on : drome security screeners may begin wear equipment to monitor their exposure to radiation syndrome .
